diff --git a/javascript-engine/Cargo.toml b/javascript-engine/Cargo.toml index ee3cd4a..75a20c4 100644 --- a/javascript-engine/Cargo.toml +++ b/javascript-engine/Cargo.toml @@ -10,9 +10,11 @@ crate-type = ['cdylib'] [dependencies] boa_engine = { version = "0.16.0", path = "external/boa/boa_engine"} +getrandom = { version = "0.2.8", features = ["js"] } serde = { version = "1.0", features = ["derive"] } serde_json = "1.0" [patch.crates-io] iana-time-zone = { path = "external/iana-time-zone" } getrandom = { path = "external/getrandom" } +chrono = { path = "external/chrono" } diff --git a/javascript-engine/external/chrono/.git-ignore-revs b/javascript-engine/external/chrono/.git-ignore-revs new file mode 100644 index 0000000..5d83f4f --- /dev/null +++ b/javascript-engine/external/chrono/.git-ignore-revs @@ -0,0 +1 @@ +febb8dc168325ac471b54591c925c48b6a485962 # cargo fmt diff --git a/javascript-engine/external/chrono/.github/pull_request_template.md b/javascript-engine/external/chrono/.github/pull_request_template.md new file mode 100644 index 0000000..ba92e74 --- /dev/null +++ b/javascript-engine/external/chrono/.github/pull_request_template.md @@ -0,0 +1,3 @@ +### Thanks for contributing to chrono! + +Please consider adding a test to ensure your bug fix/feature will not break in the future. diff --git a/javascript-engine/external/chrono/.github/workflows/lint.yml b/javascript-engine/external/chrono/.github/workflows/lint.yml new file mode 100644 index 0000000..e299586 --- /dev/null +++ b/javascript-engine/external/chrono/.github/workflows/lint.yml @@ -0,0 +1,31 @@ +name: lint + +on: + push: + branches: [main, 0.4.x] + pull_request: + paths: + - "**.rs" + - .github/** + - .ci/** + - Cargo.toml + - deny.toml + +jobs: + lint: + runs-on: ubuntu-latest + + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@stable + - uses: Swatinem/rust-cache@v1 + - run: cargo fmt -- --check --color=always + - run: cargo clippy --color=always -- -D warnings -A clippy::manual-non-exhaustive + env: + RUSTFLAGS: "-Dwarnings" + + cargo-deny: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v3 + - uses: EmbarkStudios/cargo-deny-action@v1 diff --git a/javascript-engine/external/chrono/.github/workflows/test.yml b/javascript-engine/external/chrono/.github/workflows/test.yml new file mode 100644 index 0000000..63e7c81 --- /dev/null +++ b/javascript-engine/external/chrono/.github/workflows/test.yml @@ -0,0 +1,155 @@ +name: All Tests and Builds + +on: + push: + branches: [main, 0.4.x] + pull_request: + paths: + - "**.rs" + - .github/** + - .ci/** + - Cargo.toml + +jobs: + timezones_linux: + strategy: + matrix: + os: [ubuntu-latest] + tz: ["ACST-9:30", "EST4", "UTC0", "Asia/Katmandu"] + runs-on: ${{ matrix.os }} + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@stable + - uses: Swatinem/rust-cache@v1 + - run: cargo test --all-features --color=always -- --color=always + + timezones_other: + strategy: + matrix: + os: [macos-latest, windows-latest] + tz: ["ACST-9:30", "EST4", "UTC0", "Asia/Katmandu"] + runs-on: ${{ matrix.os }} + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@stable + - uses: Swatinem/rust-cache@v1 + - run: cargo test --lib --all-features --color=always -- --color=always + - run: cargo test --doc --all-features --color=always -- --color=always + + # later this may be able to be included with the below + # kept seperate for now as the following don't compile on 1.38.0 + # * rkyv + # * criterion + rust_msrv: + strategy: + matrix: + os: [ubuntu-latest] + runs-on: ${{ matrix.os }} + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@master + with: + toolchain: 1.38.0 + - uses: Swatinem/rust-cache@v1 + # run --lib and --doc to avoid the long running integration tests which are run elsewhere + - run: cargo test --lib --features unstable-locales,wasmbind,oldtime,clock,rustc-serialize,serde,winapi --color=always -- --color=always + - run: cargo test --doc --features unstable-locales,wasmbind,oldtime,clock,rustc-serialize,serde,winapi --color=always -- --color=always + + rust_versions: + strategy: + matrix: + os: [ubuntu-latest] + rust_version: ["stable", "beta", "nightly"] + runs-on: ${{ matrix.os }} + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@master + with: + toolchain: ${{ matrix.rust_version }} + - uses: Swatinem/rust-cache@v1 + # run --lib and --doc to avoid the long running integration tests which are run elsewhere + - run: cargo test --lib --all-features --color=always -- --color=always + - run: cargo test --doc --all-features --color=always -- --color=always + + features_check: + strategy: + matrix: + os: [ubuntu-latest, macos-latest, windows-latest] + runs-on: ${{ matrix.os }} + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@stable + - uses: taiki-e/install-action@cargo-hack + - uses: Swatinem/rust-cache@v1 + - run: cargo hack check --feature-powerset --optional-deps serde,rkyv --skip default --skip __internal_bench --skip __doctest --skip iana-time-zone --skip pure-rust-locales + + no_std: + strategy: + matrix: + os: [ubuntu-latest] + target: [thumbv6m-none-eabi, x86_64-fortanix-unknown-sgx] + runs-on: ${{ matrix.os }} + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@stable + with: + targets: ${{ matrix.target }} + - uses: Swatinem/rust-cache@v1 + - run: cargo build --target ${{ matrix.target }} --color=always + working-directory: ./ci/core-test + + alternative_targets: + strategy: + matrix: + os: [ubuntu-latest] + target: [wasm32-unknown-unknown, wasm32-wasi, wasm32-unknown-emscripten, aarch64-apple-ios, aarch64-linux-android] + runs-on: ${{ matrix.os }} + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@stable + with: + targets: ${{ matrix.target }} + - uses: Swatinem/rust-cache@v1 + - uses: actions/setup-node@v1 + with: + node-version: "12" + - run: | + export RUST_BACKTRACE=1 + curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh + wasm-pack --version + - run: cargo build --target ${{ matrix.target }} --color=always + + features_check_wasm: + strategy: + matrix: + os: [ubuntu-latest] + runs-on: ${{ matrix.os }} + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@stable + with: + targets: wasm32-unknown-unknown + - uses: taiki-e/install-action@cargo-hack + - uses: Swatinem/rust-cache@v1 + - run: cargo hack check --feature-powerset --optional-deps serde,rkyv --skip default --skip __internal_bench --skip __doctest --skip iana-time-zone --skip pure-rust-locales + + cross-targets: + strategy: + matrix: + target: + - x86_64-sun-solaris + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v2 + - run: cargo install cross + - uses: Swatinem/rust-cache@v1 + - run: cross check --target ${{ matrix.target }} + + check-docs: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v2 + - uses: dtolnay/rust-toolchain@nightly + - run: cargo +nightly doc --all-features --no-deps + env: + RUSTDOCFLAGS: "-D warnings --cfg docsrs" diff --git a/javascript-engine/external/chrono/.gitignore b/javascript-engine/external/chrono/.gitignore new file mode 100644 index 0000000..f989181 --- /dev/null +++ b/javascript-engine/external/chrono/.gitignore @@ -0,0 +1,6 @@ +target +Cargo.lock +.tool-versions + +# for jetbrains users +.idea/ diff --git a/javascript-engine/external/chrono/AUTHORS.txt b/javascript-engine/external/chrono/AUTHORS.txt new file mode 100644 index 0000000..caff579 --- /dev/null +++ b/javascript-engine/external/chrono/AUTHORS.txt @@ -0,0 +1,43 @@ +Chrono is mainly written by Kang Seonghoon , +and also the following people (in ascending order): + +Alex Mikhalev +Alexander Bulaev +Ashley Mannix +Ben Boeckel +Ben Eills +Brandon W Maister +Brandon W Maister +Cecile Tonglet +Colin Ray +Corey Farwell +Dan +Danilo Bargen +David Hewson +David Ross +David Tolnay +David Willie +Eric Findlay +Eunchong Yu +Frans Skarman +Huon Wilson +Igor Gnatenko +Jake Vossen +Jim Turner +Jisoo Park +Joe Wilm +John Heitmann +John Nagle +Jonas mg +János Illés +Ken Tossell +Martin Risell Lilja +Richard Petrie +Ryan Lewis +Sergey V. Shadoy +Sergey V. Galtsev +Steve Klabnik +Tom Gallacher +klutzy +kud1ing +Yohan Boogaert diff --git a/javascript-engine/external/chrono/CHANGELOG.md b/javascript-engine/external/chrono/CHANGELOG.md new file mode 100644 index 0000000..1e6f6f9 --- /dev/null +++ b/javascript-engine/external/chrono/CHANGELOG.md @@ -0,0 +1,731 @@ +ChangeLog for Chrono +==================== + +This documents notable changes to [Chrono](https://github.com/chronotope/chrono) +up to and including version 0.4.19. For later releases, please review the +release notes on [GitHub](https://github.com/chronotope/chrono/releases). + +## 0.4.19 + +* Correct build on solaris/illumos + +## 0.4.18 + +* Restore support for x86_64-fortanix-unknown-sgx + +## 0.4.17 + +* Fix a name resolution error in wasm-bindgen code introduced by removing the dependency on time + v0.1 + +## 0.4.16 + +### Features + +* Add %Z specifier to the `FromStr`, similar to the glibc strptime + (does not set the offset from the timezone name) + +* Drop the dependency on time v0.1, which is deprecated, unless the `oldtime` + feature is active. This feature is active by default in v0.4.16 for backwards + compatibility, but will likely be removed in v0.5. Code that imports + `time::Duration` should be switched to import `chrono::Duration` instead to + avoid breakage. + +## 0.4.15 + +### Fixes + +* Correct usage of vec in specific feature combinations (@quodlibetor) + +## 0.4.14 **YANKED** + +### Features + +* Add day and week iterators for `NaiveDate` (@gnzlbg & @robyoung) +* Add a `Month` enum (@hhamana) +* Add `locales`. All format functions can now use locales, see the documentation for the + `unstable-locales` feature. +* Fix `Local.from_local_datetime` method for wasm + +### Improvements + +* Added MIN and MAX values for `NaiveTime`, `NaiveDateTime` and `DateTime`. + +## 0.4.13 + +### Features + +* Add `DurationRound` trait that allows rounding and truncating by `Duration` (@robyoung) + +### Internal Improvements + +* Code improvements to impl `From` for `js_sys` in wasm to reuse code (@schrieveslaach) + +## 0.4.12 + +### New Methods and impls + +* `Duration::abs` to ensure that a duration is just a magnitude (#418 @abreis). + +### Compatibility improvements + +* impl `From` for `js_sys` in wasm (#424 @schrieveslaach) +* Bump required version of `time` for redox support. + +### Bugfixes + +* serde modules do a better job with `Option` types (#417 @mwkroening and #429 + @fx-kirin) +* Use js runtime when using wasmbind to get the local offset (#412 + @quodlibetor) + +### Internal Improvements + +* Migrate to github actions from travis-ci, make the overall CI experience more comprehensible, + significantly faster and more correct (#439 @quodlibetor) + +## 0.4.11 + +### Improvements + +* Support a space or `T` in `FromStr` for `DateTime`, meaning that e.g. + `dt.to_string().parse::>()` now correctly works on round-trip. + (@quodlibetor in #378) +* Support "negative UTC" in `parse_from_rfc2822` (@quodlibetor #368 reported in + #102) +* Support comparisons of DateTimes with different timezones (@dlalic in #375) +* Many documentation improvements + +### Bitrot and external integration fixes + +* Don't use wasmbind on wasi (@coolreader18 #365) +* Avoid deprecation warnings for `Error::description` (@AnderEnder and + @quodlibetor #376) + +### Internal improvements + +* Use Criterion for benchmarks (@quodlibetor) + +## 0.4.10 + +### Compatibility notes + +* Putting some functionality behind an `alloc` feature to improve no-std + support (in #341) means that if you were relying on chrono with + `no-default-features` *and* using any of the functions that require alloc + support (i.e. any of the string-generating functions like `to_rfc3339`) you + will need to add the `alloc` feature in your Cargo.toml. + +### Improvements + +* `DateTime::parse_from_str` is more than 2x faster in some cases. (@michalsrb + #358) +* Significant improvements to no-std and alloc support (This should also make + many format/serialization operations induce zero unnecessary allocations) + (@CryZe #341) + +### Features + +* Functions that were accepting `Iterator` of `Item`s (for example + `format_with_items`) now accept `Iterator` of `Borrow`, so one can + use values or references. (@michalsrb #358) +* Add built-in support for structs with nested `Option` etc fields + (@manifest #302) + +### Internal/doc improvements + +* Use markdown footnotes on the `strftime` docs page (@qudlibetor #359) +* Migrate from `try!` -> `?` (question mark) because it is now emitting + deprecation warnings and has been stable since rustc 1.13.0 +* Deny dead code + +## 0.4.9 + +### Fixes + +* Make Datetime arithmatic adjust their offsets after discovering their new + timestamps (@quodlibetor #337) +* Put wasm-bindgen related code and dependencies behind a `wasmbind` feature + gate. (@quodlibetor #335) + +## 0.4.8 + +### Fixes + +* Add '0' to single-digit days in rfc2822 date format (@wyhaya #323) +* Correctly pad DelayedFormat (@SamokhinIlya #320) + +### Features + +* Support `wasm-unknown-unknown` via wasm-bindgen (in addition to + emscripten/`wasm-unknown-emscripten`). (finished by @evq in #331, initial + work by @jjpe #287) + +## 0.4.7 + +### Fixes + +* Disable libc default features so that CI continues to work on rust 1.13 +* Fix panic on negative inputs to timestamp_millis (@cmars #292) +* Make `LocalResult` `Copy/Eq/Hash` + +### Features + +* Add `std::convert::From` conversions between the different timezone formats + (@mqudsi #271) +* Add `timestamp_nanos` methods (@jean-airoldie #308) +* Documentation improvements + +## 0.4.6 + +### Maintenance + +* Doc improvements -- improve README CI verification, external links +* winapi upgrade to 0.3 + +## Unreleased + +### Features + +* Added `NaiveDate::from_weekday_of_month{,_opt}` for getting eg. the 2nd Friday of March 2017. + +## 0.4.5 + +### Features + +* Added several more serde deserialization helpers (@novacrazy #258) +* Enabled all features on the playground (@davidtwco #267) +* Derive `Hash` on `FixedOffset` (@LuoZijun #254) +* Improved docs (@storyfeet #261, @quodlibetor #252) + +## 0.4.4 + +### Features + +* Added support for parsing nanoseconds without the leading dot (@emschwartz #251) + +## 0.4.3 + +### Features + +* Added methods to DateTime/NaiveDateTime to present the stored value as a number + of nanoseconds since the UNIX epoch (@harkonenbade #247) +* Added a serde serialise/deserialise module for nanosecond timestamps. (@harkonenbade #247) +* Added "Permissive" timezone parsing which allows a numeric timezone to + be specified without minutes. (@quodlibetor #242) + +## 0.4.2 + +### Deprecations + +* More strongly deprecate RustcSerialize: remove it from documentation unless + the feature is enabled, issue a deprecation warning if the rustc-serialize + feature is enabled (@quodlibetor #174) + +### Features + +* Move all uses of the system clock behind a `clock` feature, for use in + environments where we don't have access to the current time. (@jethrogb #236) +* Implement subtraction of two `Date`s, `Time`s, or `DateTime`s, returning a + `Duration` (@tobz1000 #237) + +## 0.4.1 + +### Bug Fixes + +* Allow parsing timestamps with subsecond precision (@jonasbb) +* RFC2822 allows times to not include the second (@upsuper) + +### Features + +* New `timestamp_millis` method on `DateTime` and `NaiveDateTim` that returns + number of milliseconds since the epoch. (@quodlibetor) +* Support exact decimal width on subsecond display for RFC3339 via a new + `to_rfc3339_opts` method on `DateTime` (@dekellum) +* Use no_std-compatible num dependencies (@cuviper) +* Add `SubsecRound` trait that allows rounding to the nearest second + (@dekellum) + +### Code Hygiene and Docs + +* Docs! (@alatiera @kosta @quodlibetor @kennytm) +* Run clippy and various fixes (@quodlibetor) + +## 0.4.0 (2017-06-22) + +This was originally planned as a minor release but was pushed to a major +release due to the compatibility concern raised. + +### Added + +- `IsoWeek` has been added for the ISO week without time zone. + +- The `+=` and `-=` operators against `time::Duration` are now supported for + `NaiveDate`, `NaiveTime` and `NaiveDateTime`. (#99) + + (Note that this does not invalidate the eventual deprecation of `time::Duration`.) + +- `SystemTime` and `DateTime` types can be now converted to each other via `From`. + Due to the obvious lack of time zone information in `SystemTime`, + the forward direction is limited to `DateTime` and `DateTime` only. + +### Changed + +- Intermediate implementation modules have been flattened (#161), + and `UTC` has been renamed to `Utc` in accordance with the current convention (#148). + + The full list of changes is as follows: + + Before | After + ---------------------------------------- | ---------------------------- + `chrono::date::Date` | `chrono::Date` + `chrono::date::MIN` | `chrono::MIN_DATE` + `chrono::date::MAX` | `chrono::MAX_DATE` + `chrono::datetime::DateTime` | `chrono::DateTime` + `chrono::naive::time::NaiveTime` | `chrono::naive::NaiveTime` + `chrono::naive::date::NaiveDate` | `chrono::naive::NaiveDate` + `chrono::naive::date::MIN` | `chrono::naive::MIN_DATE` + `chrono::naive::date::MAX` | `chrono::naive::MAX_DATE` + `chrono::naive::datetime::NaiveDateTime` | `chrono::naive::NaiveDateTime` + `chrono::offset::utc::UTC` | `chrono::offset::Utc` + `chrono::offset::fixed::FixedOffset` | `chrono::offset::FixedOffset` + `chrono::offset::local::Local` | `chrono::offset::Local` + `chrono::format::parsed::Parsed` | `chrono::format::Parsed` + + With an exception of `Utc`, this change does not affect any direct usage of + `chrono::*` or `chrono::prelude::*` types. + +- `Datelike::isoweekdate` is replaced by `Datelike::iso_week` which only returns the ISO week. + + The original method used to return a tuple of year number, week number and day of the week, + but this duplicated the `Datelike::weekday` method and it had been hard to deal with + the raw year and week number for the ISO week date. + This change isolates any logic and API for the week date into a separate type. + +- `NaiveDateTime` and `DateTime` can now be deserialized from an integral UNIX timestamp. (#125) + + This turns out to be very common input for web-related usages. + The existing string representation is still supported as well. + +- `chrono::serde` and `chrono::naive::serde` modules have been added + for the serialization utilities. (#125) + + Currently they contain the `ts_seconds` modules that can be used to + serialize `NaiveDateTime` and `DateTime` values into an integral UNIX timestamp. + This can be combined with Serde's `[de]serialize_with` attributes + to fully support the (de)serialization to/from the timestamp. + + For rustc-serialize, there are separate `chrono::TsSeconds` and `chrono::naive::TsSeconds` types + that are newtype wrappers implementing different (de)serialization logics. + This is a suboptimal API, however, and it is strongly recommended to migrate to Serde. + +### Fixed + +- The major version was made to fix the broken Serde dependency issues. (#146, #156, #158, #159) + + The original intention to technically break the dependency was + to facilitate the use of Serde 1.0 at the expense of temporary breakage. + Whether this was appropriate or not is quite debatable, + but it became clear that there are several high-profile crates requiring Serde 0.9 + and it is not feasible to force them to use Serde 1.0 anyway. + + To the end, the new major release was made with some known lower-priority breaking changes. + 0.3.1 is now yanked and any remaining 0.3 users can safely roll back to 0.3.0. + +- Various documentation fixes and goodies. (#92, #131, #136) + +## 0.3.1 (2017-05-02) + +### Added + +- `Weekday` now implements `FromStr`, `Serialize` and `Deserialize`. (#113) + + The syntax is identical to `%A`, i.e. either the shortest or the longest form of English names. + +### Changed + +- Serde 1.0 is now supported. (#142) + + This is technically a breaking change because Serde 0.9 and 1.0 are not compatible, + but this time we decided not to issue a minor version because + we have already seen Serde 0.8 and 0.9 compatibility problems even after 0.3.0 and + a new minor version turned out to be not very helpful for this kind of issues. + +### Fixed + +- Fixed a bug that the leap second can be mapped wrongly in the local time zone. + Only occurs when the local time zone is behind UTC. (#130) + +## 0.3.0 (2017-02-07) + +The project has moved to the [Chronotope](https://github.com/chronotope/) organization. + +### Added + +- `chrono::prelude` module has been added. All other glob imports are now discouraged. + +- `FixedOffset` can be added to or subtracted from any timelike types. + + - `FixedOffset::local_minus_utc` and `FixedOffset::utc_minus_local` methods have been added. + Note that the old `Offset::local_minus_utc` method is gone; see below. + +- Serde support for non-self-describing formats like Bincode is added. (#89) + +- Added `Item::Owned{Literal,Space}` variants for owned formatting items. (#76) + +- Formatting items and the `Parsed` type have been slightly adjusted so that + they can be internally extended without breaking any compatibility. + +- `Weekday` is now `Hash`able. (#109) + +- `ParseError` now implements `Eq` as well as `PartialEq`. (#114) + +- More documentation improvements. (#101, #108, #112) + +### Changed + +- Chrono now only supports Rust 1.13.0 or later (previously: Rust 1.8.0 or later). + +- Serde 0.9 is now supported. + Due to the API difference, support for 0.8 or older is discontinued. (#122) + +- Rustc-serialize implementations are now on par with corresponding Serde implementations. + They both standardize on the `std::fmt::Debug` textual output. + + **This is a silent breaking change (hopefully the last though).** + You should be prepared for the format change if you depended on rustc-serialize. + +- `Offset::local_minus_utc` is now `Offset::fix`, and returns `FixedOffset` instead of a duration. + + This makes every time zone operation operate within a bias less than one day, + and vastly simplifies many logics. + +- `chrono::format::format` now receives `FixedOffset` instead of `time::Duration`. + +- The following methods and implementations have been renamed and older names have been *removed*. + The older names will be reused for the same methods with `std::time::Duration` in the future. + + - `checked_*` → `checked_*_signed` in `Date`, `DateTime`, `NaiveDate` and `NaiveDateTime` types + + - `overflowing_*` → `overflowing_*_signed` in the `NaiveTime` type + + - All subtraction implementations between two time instants have been moved to + `signed_duration_since`, following the naming in `std::time`. + +### Fixed + +- Fixed a panic when the `Local` offset receives a leap second. (#123) + +### Removed + +- Rustc-serialize support for `Date` types and all offset types has been dropped. + + These implementations were automatically derived and never had been in a good shape. + Moreover there are no corresponding Serde implementations, limiting their usefulness. + In the future they may be revived with more complete implementations. + +- The following method aliases deprecated in the 0.2 branch have been removed. + + - `DateTime::num_seconds_from_unix_epoch` (→ `DateTime::timestamp`) + - `NaiveDateTime::from_num_seconds_from_unix_epoch` (→ `NaiveDateTime::from_timestamp`) + - `NaiveDateTime::from_num_seconds_from_unix_epoch_opt` (→ `NaiveDateTime::from_timestamp_opt`) + - `NaiveDateTime::num_seconds_unix_epoch` (→ `NaiveDateTime::timestamp`) + +- Formatting items are no longer `Copy`, except for `chrono::format::Pad`. + +- `chrono::offset::add_with_leapsecond` has been removed. + Use a direct addition with `FixedOffset` instead. + +## 0.2.25 (2016-08-04) + +This is the last version officially supports Rust 1.12.0 or older. + +(0.2.24 was accidentally uploaded without a proper check for warnings in the default state, +and replaced by 0.2.25 very shortly. Duh.) + +### Added + +- Serde 0.8 is now supported. 0.7 also remains supported. (#86) + +### Fixed + +- The deserialization implementation for rustc-serialize now properly verifies the input. + All serialization codes are also now thoroughly tested. (#42) + +## 0.2.23 (2016-08-03) + +### Added + +- The documentation was greatly improved for several types, + and tons of cross-references have been added. (#77, #78, #80, #82) + +- `DateTime::timestamp_subsec_{millis,micros,nanos}` methods have been added. (#81) + +### Fixed + +- When the system time records a leap second, + the nanosecond component was mistakenly reset to zero. (#84) + +- `Local` offset misbehaves in Windows for August and later, + due to the long-standing libtime bug (dates back to mid-2015). + Workaround has been implemented. (#85) + +## 0.2.22 (2016-04-22) + +### Fixed + +- `%.6f` and `%.9f` used to print only three digits when the nanosecond part is zero. (#71) +- The documentation for `%+` has been updated to reflect the current status. (#71) + +## 0.2.21 (2016-03-29) + +### Fixed + +- `Fixed::LongWeekdayName` was unable to recognize `"sunday"` (whoops). (#66) + +## 0.2.20 (2016-03-06) + +### Changed + +- `serde` dependency has been updated to 0.7. (#63, #64) + +## 0.2.19 (2016-02-05) + +### Added + +- The documentation for `Date` is made clear about its ambiguity and guarantees. + +### Fixed + +- `DateTime::date` had been wrong when the local date and the UTC date is in disagreement. (#61) + +## 0.2.18 (2016-01-23) + +### Fixed + +- Chrono no longer pulls a superfluous `rand` dependency. (#57) + +## 0.2.17 (2015-11-22) + +### Added + +- Naive date and time types and `DateTime` now have a `serde` support. + They serialize as an ISO 8601 / RFC 3339 string just like `Debug`. (#51) + +## 0.2.16 (2015-09-06) + +### Added + +- Added `%.3f`, `%.6f` and `%.9f` specifier for formatting fractional seconds + up to 3, 6 or 9 decimal digits. This is a natural extension to the existing `%f`. + Note that this is (not yet) generic, no other value of precision is supported. (#45) + +### Changed + +- Forbade unsized types from implementing `Datelike` and `Timelike`. + This does not make a big harm as any type implementing them should be already sized + to be practical, but this change still can break highly generic codes. (#46) + +### Fixed + +- Fixed a broken link in the `README.md`. (#41) + +## 0.2.15 (2015-07-05) + +### Added + +- Padding modifiers `%_?`, `%-?` and `%0?` are implemented. + They are glibc extensions which seem to be reasonably widespread (e.g. Ruby). + +- Added `%:z` specifier and corresponding formatting items + which is essentially the same as `%z` but with a colon. + +- Added a new specifier `%.f` which precision adapts from the input. + This was added as a response to the UX problems in the original nanosecond specifier `%f`. + +### Fixed + +- `Numeric::Timestamp` specifier (`%s`) was ignoring the time zone offset when provided. + +- Improved the documentation and associated tests for `strftime`. + +## 0.2.14 (2015-05-15) + +### Fixed + +- `NaiveDateTime +/- Duration` or `NaiveTime +/- Duration` could have gone wrong + when the `Duration` to be added is negative and has a fractional second part. + This was caused by an underflow in the conversion from `Duration` to the parts; + the lack of tests for this case allowed a bug. (#37) + +## 0.2.13 (2015-04-29) + +### Added + +- The optional dependency on `rustc_serialize` and + relevant `Rustc{En,De}codable` implementations for supported types has been added. + This is enabled by the `rustc-serialize` Cargo feature. (#34) + +### Changed + +- `chrono::Duration` reexport is changed to that of crates.io `time` crate. + This enables Rust 1.0 beta compatibility. + +## 0.2.4 (2015-03-03) + +### Fixed + +- Clarified the meaning of `Date` and fixed unwanted conversion problem + that only occurs with positive UTC offsets. (#27) + +## 0.2.3 (2015-02-27) + +### Added + +- `DateTime` and `Date` is now `Copy`/`Send` when `Tz::Offset` is `Copy`/`Send`. + The implementations for them were mistakenly omitted. (#25) + +### Fixed + +- `Local::from_utc_datetime` didn't set a correct offset. (#26) + +## 0.2.1 (2015-02-21) + +### Changed + +- `DelayedFormat` no longer conveys a redundant lifetime. + +## 0.2.0 (2015-02-19) + +### Added + +- `Offset` is splitted into `TimeZone` (constructor) and `Offset` (storage) types. + You would normally see only the former, as the latter is mostly an implementation detail. + Most importantly, `Local` now can be used to directly construct timezone-aware values. + + Some types (currently, `UTC` and `FixedOffset`) are both `TimeZone` and `Offset`, + but others aren't (e.g. `Local` is not what is being stored to each `DateTime` values). + +- `LocalResult::map` convenience method has been added. + +- `TimeZone` now allows a construction of `DateTime` values from UNIX timestamp, + via `timestamp` and `timestamp_opt` methods. + +- `TimeZone` now also has a method for parsing `DateTime`, namely `datetime_from_str`. + +- The following methods have been added to all date and time types: + + - `checked_add` + - `checked_sub` + - `format_with_items` + +- The following methods have been added to all timezone-aware types: + + - `timezone` + - `with_timezone` + - `naive_utc` + - `naive_local` + +- `parse_from_str` method has been added to all naive types and `DateTime`. + +- All naive types and instances of `DateTime` with time zones `UTC`, `Local` and `FixedOffset` + implement the `FromStr` trait. They parse what `std::fmt::Debug` would print. + +- `chrono::format` has been greatly rewritten. + + - The formatting syntax parser is modular now, available at `chrono::format::strftime`. + + - The parser and resolution algorithm is also modular, the former is available at + `chrono::format::parse` while the latter is available at `chrono::format::parsed`. + + - Explicit support for RFC 2822 and 3339 syntaxes is landed. + + - There is a minor formatting difference with atypical values, + e.g. for years not between 1 BCE and 9999 CE. + +### Changed + +- Most uses of `Offset` are converted to `TimeZone`. + In fact, *all* user-facing code is expected to be `Offset`-free. + +- `[Naive]DateTime::*num_seconds_from_unix_epoch*` methods have been renamed to + simply `timestamp` or `from_timestamp*`. The original names have been deprecated. + +### Removed + +- `Time` has been removed. This also prompts a related set of methods in `TimeZone`. + + This is in principle possible, but in practice has seen a little use + because it can only be meaningfully constructed via an existing `DateTime` value. + This made many operations to `Time` unintuitive or ambiguous, + so we simply let it go. + + In the case that `Time` is really required, one can use a simpler `NaiveTime`. + `NaiveTime` and `NaiveDate` can be freely combined and splitted, + and `TimeZone::from_{local,utc}_datetime` can be used to convert from/to the local time. + +- `with_offset` method has been removed. Use `with_timezone` method instead. + (This is not deprecated since it is an integral part of offset reform.) + +## 0.1.14 (2015-01-10) + +### Added + +- Added a missing `std::fmt::String` impl for `Local`. + +## 0.1.13 (2015-01-10) + +### Changed + +- Most types now implement both `std::fmt::Show` and `std::fmt::String`, + with the former used for the stricter output and the latter used for more casual output. + +### Removed + +- `Offset::name` has been replaced by a `std::fmt::String` implementation to `Offset`. + +## 0.1.12 (2015-01-08) + +### Removed + +- `Duration + T` no longer works due to the updated impl reachability rules. + Use `T + Duration` as a workaround. + +## 0.1.4 (2014-12-13) + +### Fixed + +- Fixed a bug that `Date::and_*` methods with an offset that can change the date are + off by one day. + +## 0.1.3 (2014-11-28) + +### Added + +- `{Date,Time,DateTime}::with_offset` methods have been added. + +- `LocalResult` now implements a common set of traits. + +- `LocalResult::and_*` methods have been added. + They are useful for safely chaining `LocalResult>` methods + to make `LocalResult>`. + +### Changed + +- `Offset::name` now returns `SendStr`. + +- `{Date,Time} - Duration` overloadings are now allowed. + +## 0.1.2 (2014-11-24) + +### Added + +- `Duration + Date` overloading is now allowed. + +### Changed + +- Chrono no longer needs `num` dependency. + +## 0.1.0 (2014-11-20) + +The initial version that was available to `crates.io`. diff --git a/javascript-engine/external/chrono/Cargo.toml b/javascript-engine/external/chrono/Cargo.toml new file mode 100644 index 0000000..96ee900 --- /dev/null +++ b/javascript-engine/external/chrono/Cargo.toml @@ -0,0 +1,76 @@ +[package] +name = "chrono" +version = "0.4.23" +description = "Date and time library for Rust" +homepage = "https://github.com/chronotope/chrono" +documentation = "https://docs.rs/chrono/" +repository = "https://github.com/chronotope/chrono" +keywords = ["date", "time", "calendar"] +categories = ["date-and-time"] +readme = "README.md" +license = "MIT/Apache-2.0" +exclude = ["/ci/*"] +edition = "2018" + +[lib] +name = "chrono" + +[features] +#default = ["clock", "std", "oldtime", "wasmbind"] +default = ["clock", "std", "oldtime"] +alloc = [] +libc = [] +std = [] +clock = ["std", "winapi", "iana-time-zone"] +oldtime = ["time"] +#wasmbind = ["wasm-bindgen", "js-sys"] +unstable-locales = ["pure-rust-locales", "alloc"] +__internal_bench = ["criterion"] +__doctest = [] + +[dependencies] +time = { version = "0.1.43", optional = true } +num-integer = { version = "0.1.36", default-features = false } +num-traits = { version = "0.2", default-features = false } +rustc-serialize = { version = "0.3.20", optional = true } +serde = { version = "1.0.99", default-features = false, optional = true } +pure-rust-locales = { version = "0.5.2", optional = true } +criterion = { version = "0.4.0", optional = true } +rkyv = {version = "0.7", optional = true} +iana-time-zone = { version = "0.1.45", optional = true, features = ["fallback"] } +arbitrary = { version = "1.0.0", features = ["derive"], optional = true } + +[target.'cfg(all(target_arch = "wasm32", not(any(target_os = "emscripten", target_os = "wasi"))))'.dependencies] +wasm-bindgen = { version = "0.2", optional = true } +js-sys = { version = "0.3", optional = true } # contains FFI bindings for the JS Date API + + +[target.'cfg(windows)'.dependencies] +winapi = { version = "0.3.0", features = ["std", "minwinbase", "minwindef", "timezoneapi"], optional = true } + +[dev-dependencies] +serde_json = { version = "1" } +serde_derive = { version = "1", default-features = false } +bincode = { version = "1.3.0" } +num-iter = { version = "0.1.35", default-features = false } +doc-comment = { version = "0.3" } + +[target.'cfg(all(target_arch = "wasm32", not(any(target_os = "emscripten", target_os = "wasi"))))'.dev-dependencies] +wasm-bindgen-test = "0.3" + +[package.metadata.docs.rs] +features = ["serde"] +rustdoc-args = ["--cfg", "docsrs"] + +[package.metadata.playground] +features = ["serde"] + +[[bench]] +name = "chrono" +required-features = ["__internal_bench"] +harness = false + +[[bench]] +name = "serde" +required-features = ["__internal_bench", "serde"] +harness = false diff --git a/javascript-engine/external/chrono/LICENSE.txt b/javascript-engine/external/chrono/LICENSE.txt new file mode 100644 index 0000000..924ff57 --- /dev/null +++ b/javascript-engine/external/chrono/LICENSE.txt @@ -0,0 +1,240 @@ +Rust-chrono is dual-licensed under The MIT License [1] and +Apache 2.0 License [2]. Copyright (c) 2014--2017, Kang Seonghoon and +contributors. + +Nota Bene: This is same as the Rust Project's own license. + + +[1]: , which is reproduced below: + +~~~~ +The MIT License (MIT) + +Copyright (c) 2014, Kang Seonghoon. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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+1,26 @@ +# this Makefile is mostly for the packaging convenience. +# casual users should use `cargo` to retrieve the appropriate version of Chrono. + +CHANNEL=stable + +.PHONY: all +all: + @echo 'Try `cargo build` instead.' + +.PHONY: authors +authors: + echo 'Chrono is mainly written by Kang Seonghoon ,' > AUTHORS.txt + echo 'and also the following people (in ascending order):' >> AUTHORS.txt + echo >> AUTHORS.txt + git log --format='%aN <%aE>' | grep -v 'Kang Seonghoon' | sort -u >> AUTHORS.txt + +.PHONY: readme README.md +readme: README.md + +.PHONY: test +test: + CHANNEL=$(CHANNEL) ./ci/travis.sh + +.PHONY: doc +doc: authors readme + cargo doc --features 'serde rustc-serialize bincode' diff --git a/javascript-engine/external/chrono/README.md b/javascript-engine/external/chrono/README.md new file mode 100644 index 0000000..ad95918 --- /dev/null +++ b/javascript-engine/external/chrono/README.md @@ -0,0 +1,59 @@ +[Chrono][docsrs]: Date and Time for Rust +======================================== + +[![Chrono GitHub Actions][gh-image]][gh-checks] +[![Chrono on crates.io][cratesio-image]][cratesio] +[![Chrono on docs.rs][docsrs-image]][docsrs] +[![Join the chat at https://gitter.im/chrono-rs/chrono][gitter-image]][gitter] + +[gh-image]: https://github.com/chronotope/chrono/actions/workflows/test.yml/badge.svg +[gh-checks]: https://github.com/chronotope/chrono/actions?query=workflow%3Atest +[cratesio-image]: https://img.shields.io/crates/v/chrono.svg +[cratesio]: https://crates.io/crates/chrono +[docsrs-image]: https://docs.rs/chrono/badge.svg +[docsrs]: https://docs.rs/chrono +[gitter-image]: https://badges.gitter.im/chrono-rs/chrono.svg +[gitter]: https://gitter.im/chrono-rs/chrono + +It aims to be a feature-complete superset of +the [time](https://github.com/rust-lang-deprecated/time) library. +In particular, + +* Chrono strictly adheres to ISO 8601. +* Chrono is timezone-aware by default, with separate timezone-naive types. +* Chrono is space-optimal and (while not being the primary goal) reasonably efficient. + +There were several previous attempts to bring a good date and time library to Rust, +which Chrono builds upon and should acknowledge: + +* [Initial research on + the wiki](https://github.com/rust-lang/rust-wiki-backup/blob/master/Lib-datetime.md) +* Dietrich Epp's [datetime-rs](https://github.com/depp/datetime-rs) +* Luis de Bethencourt's [rust-datetime](https://github.com/luisbg/rust-datetime) + +## Limitations + +Only proleptic Gregorian calendar (i.e. extended to support older dates) is supported. +Be very careful if you really have to deal with pre-20C dates, they can be in Julian or others. + +Date types are limited in about +/- 262,000 years from the common epoch. +Time types are limited in the nanosecond accuracy. + +[Leap seconds are supported in the representation but +Chrono doesn't try to make use of them](https://docs.rs/chrono/0.4/chrono/naive/struct.NaiveTime.html#leap-second-handling). +(The main reason is that leap seconds are not really predictable.) +Almost *every* operation over the possible leap seconds will ignore them. +Consider using `NaiveDateTime` with the implicit TAI (International Atomic Time) scale +if you want. + +Chrono inherently does not support an inaccurate or partial date and time representation. +Any operation that can be ambiguous will return `None` in such cases. +For example, "a month later" of 2014-01-30 is not well-defined +and consequently `Utc.ymd_opt(2014, 1, 30).unwrap().with_month(2)` returns `None`. + +Non ISO week handling is not yet supported. +For now you can use the [chrono_ext](https://crates.io/crates/chrono_ext) +crate ([sources](https://github.com/bcourtine/chrono-ext/)). + +Advanced time zone handling is not yet supported. +For now you can try the [Chrono-tz](https://github.com/chronotope/chrono-tz/) crate instead. diff --git a/javascript-engine/external/chrono/appveyor.yml b/javascript-engine/external/chrono/appveyor.yml new file mode 100644 index 0000000..6057e85 --- /dev/null +++ b/javascript-engine/external/chrono/appveyor.yml @@ -0,0 +1,12 @@ +# TODO: delete this without breaking all PRs +environment: + matrix: + - TARGET: nightly-i686-pc-windows-gnu +matrix: + allow_failures: + - channel: nightly + +build: false + +test_script: + - echo "stub" diff --git a/javascript-engine/external/chrono/benches/chrono.rs b/javascript-engine/external/chrono/benches/chrono.rs new file mode 100644 index 0000000..246271b --- /dev/null +++ b/javascript-engine/external/chrono/benches/chrono.rs @@ -0,0 +1,137 @@ +//! Benchmarks for chrono that just depend on std +#![cfg(feature = "__internal_bench")] + +use criterion::{black_box, criterion_group, criterion_main, BenchmarkId, Criterion}; + +use chrono::prelude::*; +use chrono::{DateTime, FixedOffset, Local, Utc, __BenchYearFlags}; + +fn bench_datetime_parse_from_rfc2822(c: &mut Criterion) { + c.bench_function("bench_datetime_parse_from_rfc2822", |b| { + b.iter(|| { + let str = black_box("Wed, 18 Feb 2015 23:16:09 +0000"); + DateTime::parse_from_rfc2822(str).unwrap() + }) + }); +} + +fn bench_datetime_parse_from_rfc3339(c: &mut Criterion) { + c.bench_function("bench_datetime_parse_from_rfc3339", |b| { + b.iter(|| { + let str = black_box("2015-02-18T23:59:60.234567+05:00"); + DateTime::parse_from_rfc3339(str).unwrap() + }) + }); +} + +fn bench_datetime_from_str(c: &mut Criterion) { + c.bench_function("bench_datetime_from_str", |b| { + b.iter(|| { + use std::str::FromStr; + let str = black_box("2019-03-30T18:46:57.193Z"); + DateTime::::from_str(str).unwrap() + }) + }); +} + +fn bench_datetime_to_rfc2822(c: &mut Criterion) { + let pst = FixedOffset::east_opt(8 * 60 * 60).unwrap(); + let dt = pst + .from_local_datetime( + &NaiveDate::from_ymd_opt(2018, 1, 11) + .unwrap() + .and_hms_nano_opt(10, 5, 13, 84_660_000) + .unwrap(), + ) + .unwrap(); + c.bench_function("bench_datetime_to_rfc2822", |b| b.iter(|| black_box(dt).to_rfc2822())); +} + +fn bench_datetime_to_rfc3339(c: &mut Criterion) { + let pst = FixedOffset::east_opt(8 * 60 * 60).unwrap(); + let dt = pst + .from_local_datetime( + &NaiveDate::from_ymd_opt(2018, 1, 11) + .unwrap() + .and_hms_nano_opt(10, 5, 13, 84_660_000) + .unwrap(), + ) + .unwrap(); + c.bench_function("bench_datetime_to_rfc3339", |b| b.iter(|| black_box(dt).to_rfc3339())); +} + +fn bench_year_flags_from_year(c: &mut Criterion) { + c.bench_function("bench_year_flags_from_year", |b| { + b.iter(|| { + for year in -999i32..1000 { + __BenchYearFlags::from_year(year); + } + }) + }); +} + +fn bench_get_local_time(c: &mut Criterion) { + c.bench_function("bench_get_local_time", |b| { + b.iter(|| { + let _ = Local::now(); + }) + }); +} + +/// Returns the number of multiples of `div` in the range `start..end`. +/// +/// If the range `start..end` is back-to-front, i.e. `start` is greater than `end`, the +/// behaviour is defined by the following equation: +/// `in_between(start, end, div) == - in_between(end, start, div)`. +/// +/// When `div` is 1, this is equivalent to `end - start`, i.e. the length of `start..end`. +/// +/// # Panics +/// +/// Panics if `div` is not positive. +fn in_between(start: i32, end: i32, div: i32) -> i32 { + assert!(div > 0, "in_between: nonpositive div = {}", div); + let start = (start.div_euclid(div), start.rem_euclid(div)); + let end = (end.div_euclid(div), end.rem_euclid(div)); + // The lowest multiple of `div` greater than or equal to `start`, divided. + let start = start.0 + (start.1 != 0) as i32; + // The lowest multiple of `div` greater than or equal to `end`, divided. + let end = end.0 + (end.1 != 0) as i32; + end - start +} + +/// Alternative implementation to `Datelike::num_days_from_ce` +fn num_days_from_ce_alt(date: &Date) -> i32 { + let year = date.year(); + let diff = move |div| in_between(1, year, div); + // 365 days a year, one more in leap years. In the gregorian calendar, leap years are all + // the multiples of 4 except multiples of 100 but including multiples of 400. + date.ordinal() as i32 + 365 * diff(1) + diff(4) - diff(100) + diff(400) +} + +fn bench_num_days_from_ce(c: &mut Criterion) { + let mut group = c.benchmark_group("num_days_from_ce"); + for year in &[1, 500, 2000, 2019] { + let d = NaiveDate::from_ymd_opt(*year, 1, 1).unwrap(); + group.bench_with_input(BenchmarkId::new("new", year), &d, |b, y| { + b.iter(|| num_days_from_ce_alt(y)) + }); + group.bench_with_input(BenchmarkId::new("classic", year), &d, |b, y| { + b.iter(|| y.num_days_from_ce()) + }); + } +} + +criterion_group!( + benches, + bench_datetime_parse_from_rfc2822, + bench_datetime_parse_from_rfc3339, + bench_datetime_from_str, + bench_datetime_to_rfc2822, + bench_datetime_to_rfc3339, + bench_year_flags_from_year, + bench_num_days_from_ce, + bench_get_local_time, +); + +criterion_main!(benches); diff --git a/javascript-engine/external/chrono/benches/serde.rs b/javascript-engine/external/chrono/benches/serde.rs new file mode 100644 index 0000000..e9de440 --- /dev/null +++ b/javascript-engine/external/chrono/benches/serde.rs @@ -0,0 +1,29 @@ +#![cfg(feature = "__internal_bench")] + +use criterion::{black_box, criterion_group, criterion_main, Criterion}; + +use chrono::NaiveDateTime; + +fn bench_ser_naivedatetime_string(c: &mut Criterion) { + c.bench_function("bench_ser_naivedatetime_string", |b| { + let dt: NaiveDateTime = "2000-01-01T00:00:00".parse().unwrap(); + b.iter(|| { + black_box(serde_json::to_string(&dt)).unwrap(); + }); + }); +} + +fn bench_ser_naivedatetime_writer(c: &mut Criterion) { + c.bench_function("bench_ser_naivedatetime_writer", |b| { + let mut s: Vec = Vec::with_capacity(20); + let dt: NaiveDateTime = "2000-01-01T00:00:00".parse().unwrap(); + b.iter(|| { + let s = &mut s; + s.clear(); + black_box(serde_json::to_writer(s, &dt)).unwrap(); + }); + }); +} + +criterion_group!(benches, bench_ser_naivedatetime_writer, bench_ser_naivedatetime_string); +criterion_main!(benches); diff --git a/javascript-engine/external/chrono/ci/core-test/Cargo.toml b/javascript-engine/external/chrono/ci/core-test/Cargo.toml new file mode 100644 index 0000000..b35ff9a --- /dev/null +++ b/javascript-engine/external/chrono/ci/core-test/Cargo.toml @@ -0,0 +1,14 @@ +[package] +name = "core-test" +version = "0.1.0" +authors = [ + "Kang Seonghoon ", + "Brandon W Maister ", +] +edition = "2018" + +[dependencies] +chrono = { path = "../..", default-features = false, features = ["serde"] } + +[features] +alloc = ["chrono/alloc"] \ No newline at end of file diff --git a/javascript-engine/external/chrono/ci/core-test/src/lib.rs b/javascript-engine/external/chrono/ci/core-test/src/lib.rs new file mode 100644 index 0000000..4af7d2e --- /dev/null +++ b/javascript-engine/external/chrono/ci/core-test/src/lib.rs @@ -0,0 +1,7 @@ +#![no_std] + +use chrono::{TimeZone, Utc}; + +pub fn create_time() { + let _ = Utc.with_ymd_and_hms(2019, 1, 1, 0, 0, 0).unwrap(); +} diff --git a/javascript-engine/external/chrono/clippy.toml b/javascript-engine/external/chrono/clippy.toml new file mode 100644 index 0000000..749c3b5 --- /dev/null +++ b/javascript-engine/external/chrono/clippy.toml @@ -0,0 +1 @@ +msrv = "1.38" diff --git a/javascript-engine/external/chrono/deny.toml b/javascript-engine/external/chrono/deny.toml new file mode 100644 index 0000000..13b9fac --- /dev/null +++ b/javascript-engine/external/chrono/deny.toml @@ -0,0 +1,13 @@ +[licenses] +allow-osi-fsf-free = "either" +copyleft = "deny" + +[advisories] +ignore = [ + "RUSTSEC-2020-0071", # time 0.1, doesn't affect the API we use + "RUSTSEC-2021-0145", # atty (dev-deps only, dependency of criterion) + "RUSTSEC-2022-0004", # rustc_serialize, cannot remove due to compatibility +] +unmaintained = "deny" +unsound = "deny" +yanked = "deny" diff --git a/javascript-engine/external/chrono/fuzz/.gitignore b/javascript-engine/external/chrono/fuzz/.gitignore new file mode 100644 index 0000000..572e03b --- /dev/null +++ b/javascript-engine/external/chrono/fuzz/.gitignore @@ -0,0 +1,4 @@ + +target +corpus +artifacts diff --git a/javascript-engine/external/chrono/fuzz/Cargo.toml b/javascript-engine/external/chrono/fuzz/Cargo.toml new file mode 100644 index 0000000..bcbc3aa --- /dev/null +++ b/javascript-engine/external/chrono/fuzz/Cargo.toml @@ -0,0 +1,24 @@ + +[package] +name = "chrono-fuzz" +version = "0.0.0" +authors = ["David Korczynski "] +publish = false +edition = "2018" + +[package.metadata] +cargo-fuzz = true + +[dependencies] +libfuzzer-sys = "0.3" + +[dependencies.chrono] +path = ".." + +# Prevent this from interfering with workspaces +[workspace] +members = ["."] + +[[bin]] +name = "fuzz_reader" +path = "fuzz_targets/fuzz_reader.rs" diff --git a/javascript-engine/external/chrono/fuzz/README.md b/javascript-engine/external/chrono/fuzz/README.md new file mode 100644 index 0000000..bfe4fc3 --- /dev/null +++ b/javascript-engine/external/chrono/fuzz/README.md @@ -0,0 +1,12 @@ +# Fuzzing Chrono +To fuzz Chrono we rely on the [Cargo-fuzz](https://rust-fuzz.github.io/) project. + +To install cargo-fuzz: +``` +cargo install cargo-fuzz +``` + +To run the Chrono fuzzer, navigate to the top directory of chrono and issue the following command: +``` +cargo-fuzz run fuzz_reader +``` diff --git a/javascript-engine/external/chrono/fuzz/fuzz_targets/fuzz_reader.rs b/javascript-engine/external/chrono/fuzz/fuzz_targets/fuzz_reader.rs new file mode 100644 index 0000000..c93c587 --- /dev/null +++ b/javascript-engine/external/chrono/fuzz/fuzz_targets/fuzz_reader.rs @@ -0,0 +1,10 @@ +#![no_main] +use libfuzzer_sys::fuzz_target; + +fuzz_target!(|data: &[u8]| { + use chrono::prelude::*; + if let Ok(data) = std::str::from_utf8(data) { + let _ = DateTime::parse_from_rfc2822(data); + let _ = DateTime::parse_from_rfc3339(data); + } +}); diff --git a/javascript-engine/external/chrono/rustfmt.toml b/javascript-engine/external/chrono/rustfmt.toml new file mode 100644 index 0000000..2a35f02 --- /dev/null +++ b/javascript-engine/external/chrono/rustfmt.toml @@ -0,0 +1 @@ +use_small_heuristics = "Max" diff --git a/javascript-engine/external/chrono/src/date.rs b/javascript-engine/external/chrono/src/date.rs new file mode 100644 index 0000000..bad4bfb --- /dev/null +++ b/javascript-engine/external/chrono/src/date.rs @@ -0,0 +1,645 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! ISO 8601 calendar date with time zone. +#![allow(deprecated)] + +#[cfg(any(feature = "alloc", feature = "std", test))] +use core::borrow::Borrow; +use core::cmp::Ordering; +use core::ops::{Add, AddAssign, Sub, SubAssign}; +use core::{fmt, hash}; + +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +#[cfg(feature = "unstable-locales")] +use crate::format::Locale; +#[cfg(any(feature = "alloc", feature = "std", test))] +use crate::format::{DelayedFormat, Item, StrftimeItems}; +use crate::naive::{IsoWeek, NaiveDate, NaiveTime}; +use crate::offset::{TimeZone, Utc}; +use crate::oldtime::Duration as OldDuration; +use crate::DateTime; +use crate::{Datelike, Weekday}; + +/// ISO 8601 calendar date with time zone. +/// +/// You almost certainly want to be using a [`NaiveDate`] instead of this type. +/// +/// This type primarily exists to aid in the construction of DateTimes that +/// have a timezone by way of the [`TimeZone`] datelike constructors (e.g. +/// [`TimeZone::ymd`]). +/// +/// This type should be considered ambiguous at best, due to the inherent lack +/// of precision required for the time zone resolution. +/// +/// There are some guarantees on the usage of `Date`: +/// +/// - If properly constructed via [`TimeZone::ymd`] and others without an error, +/// the corresponding local date should exist for at least a moment. +/// (It may still have a gap from the offset changes.) +/// +/// - The `TimeZone` is free to assign *any* [`Offset`](crate::offset::Offset) to the +/// local date, as long as that offset did occur in given day. +/// +/// For example, if `2015-03-08T01:59-08:00` is followed by `2015-03-08T03:00-07:00`, +/// it may produce either `2015-03-08-08:00` or `2015-03-08-07:00` +/// but *not* `2015-03-08+00:00` and others. +/// +/// - Once constructed as a full `DateTime`, [`DateTime::date`] and other associated +/// methods should return those for the original `Date`. For example, if `dt = +/// tz.ymd_opt(y,m,d).unwrap().hms(h,n,s)` were valid, `dt.date() == tz.ymd_opt(y,m,d).unwrap()`. +/// +/// - The date is timezone-agnostic up to one day (i.e. practically always), +/// so the local date and UTC date should be equal for most cases +/// even though the raw calculation between `NaiveDate` and `Duration` may not. +#[deprecated(since = "0.4.23", note = "Use `NaiveDate` or `DateTime` instead")] +#[derive(Clone)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +pub struct Date { + date: NaiveDate, + offset: Tz::Offset, +} + +/// The minimum possible `Date`. +#[allow(deprecated)] +#[deprecated(since = "0.4.20", note = "Use Date::MIN_UTC instead")] +pub const MIN_DATE: Date = Date::::MIN_UTC; +/// The maximum possible `Date`. +#[allow(deprecated)] +#[deprecated(since = "0.4.20", note = "Use Date::MAX_UTC instead")] +pub const MAX_DATE: Date = Date::::MAX_UTC; + +impl Date { + /// Makes a new `Date` with given *UTC* date and offset. + /// The local date should be constructed via the `TimeZone` trait. + // + // note: this constructor is purposely not named to `new` to discourage the direct usage. + #[inline] + pub fn from_utc(date: NaiveDate, offset: Tz::Offset) -> Date { + Date { date, offset } + } + + /// Makes a new `DateTime` from the current date and given `NaiveTime`. + /// The offset in the current date is preserved. + /// + /// Panics on invalid datetime. + #[inline] + pub fn and_time(&self, time: NaiveTime) -> Option> { + let localdt = self.naive_local().and_time(time); + self.timezone().from_local_datetime(&localdt).single() + } + + /// Makes a new `DateTime` from the current date, hour, minute and second. + /// The offset in the current date is preserved. + /// + /// Panics on invalid hour, minute and/or second. + #[deprecated(since = "0.4.23", note = "Use and_hms_opt() instead")] + #[inline] + pub fn and_hms(&self, hour: u32, min: u32, sec: u32) -> DateTime { + self.and_hms_opt(hour, min, sec).expect("invalid time") + } + + /// Makes a new `DateTime` from the current date, hour, minute and second. + /// The offset in the current date is preserved. + /// + /// Returns `None` on invalid hour, minute and/or second. + #[inline] + pub fn and_hms_opt(&self, hour: u32, min: u32, sec: u32) -> Option> { + NaiveTime::from_hms_opt(hour, min, sec).and_then(|time| self.and_time(time)) + } + + /// Makes a new `DateTime` from the current date, hour, minute, second and millisecond. + /// The millisecond part can exceed 1,000 in order to represent the leap second. + /// The offset in the current date is preserved. + /// + /// Panics on invalid hour, minute, second and/or millisecond. + #[deprecated(since = "0.4.23", note = "Use and_hms_milli_opt() instead")] + #[inline] + pub fn and_hms_milli(&self, hour: u32, min: u32, sec: u32, milli: u32) -> DateTime { + self.and_hms_milli_opt(hour, min, sec, milli).expect("invalid time") + } + + /// Makes a new `DateTime` from the current date, hour, minute, second and millisecond. + /// The millisecond part can exceed 1,000 in order to represent the leap second. + /// The offset in the current date is preserved. + /// + /// Returns `None` on invalid hour, minute, second and/or millisecond. + #[inline] + pub fn and_hms_milli_opt( + &self, + hour: u32, + min: u32, + sec: u32, + milli: u32, + ) -> Option> { + NaiveTime::from_hms_milli_opt(hour, min, sec, milli).and_then(|time| self.and_time(time)) + } + + /// Makes a new `DateTime` from the current date, hour, minute, second and microsecond. + /// The microsecond part can exceed 1,000,000 in order to represent the leap second. + /// The offset in the current date is preserved. + /// + /// Panics on invalid hour, minute, second and/or microsecond. + #[deprecated(since = "0.4.23", note = "Use and_hms_micro_opt() instead")] + #[inline] + pub fn and_hms_micro(&self, hour: u32, min: u32, sec: u32, micro: u32) -> DateTime { + self.and_hms_micro_opt(hour, min, sec, micro).expect("invalid time") + } + + /// Makes a new `DateTime` from the current date, hour, minute, second and microsecond. + /// The microsecond part can exceed 1,000,000 in order to represent the leap second. + /// The offset in the current date is preserved. + /// + /// Returns `None` on invalid hour, minute, second and/or microsecond. + #[inline] + pub fn and_hms_micro_opt( + &self, + hour: u32, + min: u32, + sec: u32, + micro: u32, + ) -> Option> { + NaiveTime::from_hms_micro_opt(hour, min, sec, micro).and_then(|time| self.and_time(time)) + } + + /// Makes a new `DateTime` from the current date, hour, minute, second and nanosecond. + /// The nanosecond part can exceed 1,000,000,000 in order to represent the leap second. + /// The offset in the current date is preserved. + /// + /// Panics on invalid hour, minute, second and/or nanosecond. + #[deprecated(since = "0.4.23", note = "Use and_hms_nano_opt() instead")] + #[inline] + pub fn and_hms_nano(&self, hour: u32, min: u32, sec: u32, nano: u32) -> DateTime { + self.and_hms_nano_opt(hour, min, sec, nano).expect("invalid time") + } + + /// Makes a new `DateTime` from the current date, hour, minute, second and nanosecond. + /// The nanosecond part can exceed 1,000,000,000 in order to represent the leap second. + /// The offset in the current date is preserved. + /// + /// Returns `None` on invalid hour, minute, second and/or nanosecond. + #[inline] + pub fn and_hms_nano_opt( + &self, + hour: u32, + min: u32, + sec: u32, + nano: u32, + ) -> Option> { + NaiveTime::from_hms_nano_opt(hour, min, sec, nano).and_then(|time| self.and_time(time)) + } + + /// Makes a new `Date` for the next date. + /// + /// Panics when `self` is the last representable date. + #[deprecated(since = "0.4.23", note = "Use succ_opt() instead")] + #[inline] + pub fn succ(&self) -> Date { + self.succ_opt().expect("out of bound") + } + + /// Makes a new `Date` for the next date. + /// + /// Returns `None` when `self` is the last representable date. + #[inline] + pub fn succ_opt(&self) -> Option> { + self.date.succ_opt().map(|date| Date::from_utc(date, self.offset.clone())) + } + + /// Makes a new `Date` for the prior date. + /// + /// Panics when `self` is the first representable date. + #[deprecated(since = "0.4.23", note = "Use pred_opt() instead")] + #[inline] + pub fn pred(&self) -> Date { + self.pred_opt().expect("out of bound") + } + + /// Makes a new `Date` for the prior date. + /// + /// Returns `None` when `self` is the first representable date. + #[inline] + pub fn pred_opt(&self) -> Option> { + self.date.pred_opt().map(|date| Date::from_utc(date, self.offset.clone())) + } + + /// Retrieves an associated offset from UTC. + #[inline] + pub fn offset(&self) -> &Tz::Offset { + &self.offset + } + + /// Retrieves an associated time zone. + #[inline] + pub fn timezone(&self) -> Tz { + TimeZone::from_offset(&self.offset) + } + + /// Changes the associated time zone. + /// This does not change the actual `Date` (but will change the string representation). + #[inline] + pub fn with_timezone(&self, tz: &Tz2) -> Date { + tz.from_utc_date(&self.date) + } + + /// Adds given `Duration` to the current date. + /// + /// Returns `None` when it will result in overflow. + #[inline] + pub fn checked_add_signed(self, rhs: OldDuration) -> Option> { + let date = self.date.checked_add_signed(rhs)?; + Some(Date { date, offset: self.offset }) + } + + /// Subtracts given `Duration` from the current date. + /// + /// Returns `None` when it will result in overflow. + #[inline] + pub fn checked_sub_signed(self, rhs: OldDuration) -> Option> { + let date = self.date.checked_sub_signed(rhs)?; + Some(Date { date, offset: self.offset }) + } + + /// Subtracts another `Date` from the current date. + /// Returns a `Duration` of integral numbers. + /// + /// This does not overflow or underflow at all, + /// as all possible output fits in the range of `Duration`. + #[inline] + pub fn signed_duration_since(self, rhs: Date) -> OldDuration { + self.date.signed_duration_since(rhs.date) + } + + /// Returns a view to the naive UTC date. + #[inline] + pub fn naive_utc(&self) -> NaiveDate { + self.date + } + + /// Returns a view to the naive local date. + /// + /// This is technically the same as [`naive_utc`](#method.naive_utc) + /// because the offset is restricted to never exceed one day, + /// but provided for the consistency. + #[inline] + pub fn naive_local(&self) -> NaiveDate { + self.date + } + + /// Returns the number of whole years from the given `base` until `self`. + pub fn years_since(&self, base: Self) -> Option { + self.date.years_since(base.date) + } + + /// The minimum possible `Date`. + pub const MIN_UTC: Date = Date { date: NaiveDate::MIN, offset: Utc }; + /// The maximum possible `Date`. + pub const MAX_UTC: Date = Date { date: NaiveDate::MAX, offset: Utc }; +} + +/// Maps the local date to other date with given conversion function. +fn map_local(d: &Date, mut f: F) -> Option> +where + F: FnMut(NaiveDate) -> Option, +{ + f(d.naive_local()).and_then(|date| d.timezone().from_local_date(&date).single()) +} + +impl Date +where + Tz::Offset: fmt::Display, +{ + /// Formats the date with the specified formatting items. + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format_with_items<'a, I, B>(&self, items: I) -> DelayedFormat + where + I: Iterator + Clone, + B: Borrow>, + { + DelayedFormat::new_with_offset(Some(self.naive_local()), None, &self.offset, items) + } + + /// Formats the date with the specified format string. + /// See the [`crate::format::strftime`] module + /// on the supported escape sequences. + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format<'a>(&self, fmt: &'a str) -> DelayedFormat> { + self.format_with_items(StrftimeItems::new(fmt)) + } + + /// Formats the date with the specified formatting items and locale. + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + #[inline] + pub fn format_localized_with_items<'a, I, B>( + &self, + items: I, + locale: Locale, + ) -> DelayedFormat + where + I: Iterator + Clone, + B: Borrow>, + { + DelayedFormat::new_with_offset_and_locale( + Some(self.naive_local()), + None, + &self.offset, + items, + locale, + ) + } + + /// Formats the date with the specified format string and locale. + /// See the [`crate::format::strftime`] module + /// on the supported escape sequences. + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + #[inline] + pub fn format_localized<'a>( + &self, + fmt: &'a str, + locale: Locale, + ) -> DelayedFormat> { + self.format_localized_with_items(StrftimeItems::new_with_locale(fmt, locale), locale) + } +} + +impl Datelike for Date { + #[inline] + fn year(&self) -> i32 { + self.naive_local().year() + } + #[inline] + fn month(&self) -> u32 { + self.naive_local().month() + } + #[inline] + fn month0(&self) -> u32 { + self.naive_local().month0() + } + #[inline] + fn day(&self) -> u32 { + self.naive_local().day() + } + #[inline] + fn day0(&self) -> u32 { + self.naive_local().day0() + } + #[inline] + fn ordinal(&self) -> u32 { + self.naive_local().ordinal() + } + #[inline] + fn ordinal0(&self) -> u32 { + self.naive_local().ordinal0() + } + #[inline] + fn weekday(&self) -> Weekday { + self.naive_local().weekday() + } + #[inline] + fn iso_week(&self) -> IsoWeek { + self.naive_local().iso_week() + } + + #[inline] + fn with_year(&self, year: i32) -> Option> { + map_local(self, |date| date.with_year(year)) + } + + #[inline] + fn with_month(&self, month: u32) -> Option> { + map_local(self, |date| date.with_month(month)) + } + + #[inline] + fn with_month0(&self, month0: u32) -> Option> { + map_local(self, |date| date.with_month0(month0)) + } + + #[inline] + fn with_day(&self, day: u32) -> Option> { + map_local(self, |date| date.with_day(day)) + } + + #[inline] + fn with_day0(&self, day0: u32) -> Option> { + map_local(self, |date| date.with_day0(day0)) + } + + #[inline] + fn with_ordinal(&self, ordinal: u32) -> Option> { + map_local(self, |date| date.with_ordinal(ordinal)) + } + + #[inline] + fn with_ordinal0(&self, ordinal0: u32) -> Option> { + map_local(self, |date| date.with_ordinal0(ordinal0)) + } +} + +// we need them as automatic impls cannot handle associated types +impl Copy for Date where ::Offset: Copy {} +unsafe impl Send for Date where ::Offset: Send {} + +impl PartialEq> for Date { + fn eq(&self, other: &Date) -> bool { + self.date == other.date + } +} + +impl Eq for Date {} + +impl PartialOrd for Date { + fn partial_cmp(&self, other: &Date) -> Option { + self.date.partial_cmp(&other.date) + } +} + +impl Ord for Date { + fn cmp(&self, other: &Date) -> Ordering { + self.date.cmp(&other.date) + } +} + +impl hash::Hash for Date { + fn hash(&self, state: &mut H) { + self.date.hash(state) + } +} + +impl Add for Date { + type Output = Date; + + #[inline] + fn add(self, rhs: OldDuration) -> Date { + self.checked_add_signed(rhs).expect("`Date + Duration` overflowed") + } +} + +impl AddAssign for Date { + #[inline] + fn add_assign(&mut self, rhs: OldDuration) { + self.date = self.date.checked_add_signed(rhs).expect("`Date + Duration` overflowed"); + } +} + +impl Sub for Date { + type Output = Date; + + #[inline] + fn sub(self, rhs: OldDuration) -> Date { + self.checked_sub_signed(rhs).expect("`Date - Duration` overflowed") + } +} + +impl SubAssign for Date { + #[inline] + fn sub_assign(&mut self, rhs: OldDuration) { + self.date = self.date.checked_sub_signed(rhs).expect("`Date - Duration` overflowed"); + } +} + +impl Sub> for Date { + type Output = OldDuration; + + #[inline] + fn sub(self, rhs: Date) -> OldDuration { + self.signed_duration_since(rhs) + } +} + +impl fmt::Debug for Date { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.naive_local().fmt(f)?; + self.offset.fmt(f) + } +} + +impl fmt::Display for Date +where + Tz::Offset: fmt::Display, +{ + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.naive_local().fmt(f)?; + self.offset.fmt(f) + } +} + +// Note that implementation of Arbitrary cannot be automatically derived for Date, due to +// the nontrivial bound ::Offset: Arbitrary. +#[cfg(feature = "arbitrary")] +impl<'a, Tz> arbitrary::Arbitrary<'a> for Date +where + Tz: TimeZone, + ::Offset: arbitrary::Arbitrary<'a>, +{ + fn arbitrary(u: &mut arbitrary::Unstructured<'a>) -> arbitrary::Result> { + let date = NaiveDate::arbitrary(u)?; + let offset = ::Offset::arbitrary(u)?; + Ok(Date::from_utc(date, offset)) + } +} + +#[cfg(test)] +mod tests { + use super::Date; + + use crate::oldtime::Duration; + use crate::{FixedOffset, NaiveDate, Utc}; + + #[cfg(feature = "clock")] + use crate::offset::{Local, TimeZone}; + + #[test] + #[cfg(feature = "clock")] + fn test_years_elapsed() { + const WEEKS_PER_YEAR: f32 = 52.1775; + + // This is always at least one year because 1 year = 52.1775 weeks. + let one_year_ago = Utc::today() - Duration::weeks((WEEKS_PER_YEAR * 1.5).ceil() as i64); + // A bit more than 2 years. + let two_year_ago = Utc::today() - Duration::weeks((WEEKS_PER_YEAR * 2.5).ceil() as i64); + + assert_eq!(Utc::today().years_since(one_year_ago), Some(1)); + assert_eq!(Utc::today().years_since(two_year_ago), Some(2)); + + // If the given DateTime is later than now, the function will always return 0. + let future = Utc::today() + Duration::weeks(12); + assert_eq!(Utc::today().years_since(future), None); + } + + #[test] + fn test_date_add_assign() { + let naivedate = NaiveDate::from_ymd_opt(2000, 1, 1).unwrap(); + let date = Date::::from_utc(naivedate, Utc); + let mut date_add = date; + + date_add += Duration::days(5); + assert_eq!(date_add, date + Duration::days(5)); + + let timezone = FixedOffset::east_opt(60 * 60).unwrap(); + let date = date.with_timezone(&timezone); + let date_add = date_add.with_timezone(&timezone); + + assert_eq!(date_add, date + Duration::days(5)); + + let timezone = FixedOffset::west_opt(2 * 60 * 60).unwrap(); + let date = date.with_timezone(&timezone); + let date_add = date_add.with_timezone(&timezone); + + assert_eq!(date_add, date + Duration::days(5)); + } + + #[test] + #[cfg(feature = "clock")] + fn test_date_add_assign_local() { + let naivedate = NaiveDate::from_ymd_opt(2000, 1, 1).unwrap(); + + let date = Local.from_utc_date(&naivedate); + let mut date_add = date; + + date_add += Duration::days(5); + assert_eq!(date_add, date + Duration::days(5)); + } + + #[test] + fn test_date_sub_assign() { + let naivedate = NaiveDate::from_ymd_opt(2000, 1, 1).unwrap(); + let date = Date::::from_utc(naivedate, Utc); + let mut date_sub = date; + + date_sub -= Duration::days(5); + assert_eq!(date_sub, date - Duration::days(5)); + + let timezone = FixedOffset::east_opt(60 * 60).unwrap(); + let date = date.with_timezone(&timezone); + let date_sub = date_sub.with_timezone(&timezone); + + assert_eq!(date_sub, date - Duration::days(5)); + + let timezone = FixedOffset::west_opt(2 * 60 * 60).unwrap(); + let date = date.with_timezone(&timezone); + let date_sub = date_sub.with_timezone(&timezone); + + assert_eq!(date_sub, date - Duration::days(5)); + } + + #[test] + #[cfg(feature = "clock")] + fn test_date_sub_assign_local() { + let naivedate = NaiveDate::from_ymd_opt(2000, 1, 1).unwrap(); + + let date = Local.from_utc_date(&naivedate); + let mut date_sub = date; + + date_sub -= Duration::days(5); + assert_eq!(date_sub, date - Duration::days(5)); + } +} diff --git a/javascript-engine/external/chrono/src/datetime/mod.rs b/javascript-engine/external/chrono/src/datetime/mod.rs new file mode 100644 index 0000000..00450ce --- /dev/null +++ b/javascript-engine/external/chrono/src/datetime/mod.rs @@ -0,0 +1,1322 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! ISO 8601 date and time with time zone. + +#[cfg(feature = "alloc")] +extern crate alloc; + +#[cfg(all(not(feature = "std"), feature = "alloc"))] +use alloc::string::{String, ToString}; +#[cfg(any(feature = "alloc", feature = "std", test))] +use core::borrow::Borrow; +use core::cmp::Ordering; +use core::fmt::Write; +use core::ops::{Add, AddAssign, Sub, SubAssign}; +use core::{fmt, hash, str}; +#[cfg(feature = "std")] +use std::string::ToString; +#[cfg(any(feature = "std", test))] +use std::time::{SystemTime, UNIX_EPOCH}; + +#[cfg(any(feature = "alloc", feature = "std", test))] +use crate::format::DelayedFormat; +#[cfg(feature = "unstable-locales")] +use crate::format::Locale; +use crate::format::{parse, ParseError, ParseResult, Parsed, StrftimeItems}; +use crate::format::{Fixed, Item}; +use crate::naive::{Days, IsoWeek, NaiveDate, NaiveDateTime, NaiveTime}; +#[cfg(feature = "clock")] +use crate::offset::Local; +use crate::offset::{FixedOffset, Offset, TimeZone, Utc}; +use crate::oldtime::Duration as OldDuration; +#[allow(deprecated)] +use crate::Date; +use crate::Months; +use crate::{Datelike, Timelike, Weekday}; + +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +#[cfg(feature = "rustc-serialize")] +pub(super) mod rustc_serialize; + +/// documented at re-export site +#[cfg(feature = "serde")] +pub(super) mod serde; + +#[cfg(test)] +mod tests; + +/// Specific formatting options for seconds. This may be extended in the +/// future, so exhaustive matching in external code is not recommended. +/// +/// See the `TimeZone::to_rfc3339_opts` function for usage. +#[derive(Clone, Copy, Debug, Eq, PartialEq)] +pub enum SecondsFormat { + /// Format whole seconds only, with no decimal point nor subseconds. + Secs, + + /// Use fixed 3 subsecond digits. This corresponds to + /// [Fixed::Nanosecond3](format/enum.Fixed.html#variant.Nanosecond3). + Millis, + + /// Use fixed 6 subsecond digits. This corresponds to + /// [Fixed::Nanosecond6](format/enum.Fixed.html#variant.Nanosecond6). + Micros, + + /// Use fixed 9 subsecond digits. This corresponds to + /// [Fixed::Nanosecond9](format/enum.Fixed.html#variant.Nanosecond9). + Nanos, + + /// Automatically select one of `Secs`, `Millis`, `Micros`, or `Nanos` to + /// display all available non-zero sub-second digits. This corresponds to + /// [Fixed::Nanosecond](format/enum.Fixed.html#variant.Nanosecond). + AutoSi, + + // Do not match against this. + #[doc(hidden)] + __NonExhaustive, +} + +/// ISO 8601 combined date and time with time zone. +/// +/// There are some constructors implemented here (the `from_*` methods), but +/// the general-purpose constructors are all via the methods on the +/// [`TimeZone`](./offset/trait.TimeZone.html) implementations. +#[derive(Clone)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +pub struct DateTime { + datetime: NaiveDateTime, + offset: Tz::Offset, +} + +/// The minimum possible `DateTime`. +#[deprecated(since = "0.4.20", note = "Use DateTime::MIN_UTC instead")] +pub const MIN_DATETIME: DateTime = DateTime::::MIN_UTC; +/// The maximum possible `DateTime`. +#[deprecated(since = "0.4.20", note = "Use DateTime::MAX_UTC instead")] +pub const MAX_DATETIME: DateTime = DateTime::::MAX_UTC; + +impl DateTime { + /// Makes a new `DateTime` with given *UTC* datetime and offset. + /// The local datetime should be constructed via the `TimeZone` trait. + /// + /// # Example + /// + /// ``` + /// use chrono::{DateTime, TimeZone, NaiveDateTime, Utc}; + /// + /// let dt = DateTime::::from_utc(NaiveDateTime::from_timestamp_opt(61, 0).unwrap(), Utc); + /// assert_eq!(Utc.timestamp_opt(61, 0).unwrap(), dt); + /// ``` + // + // note: this constructor is purposely not named to `new` to discourage the direct usage. + #[inline] + pub fn from_utc(datetime: NaiveDateTime, offset: Tz::Offset) -> DateTime { + DateTime { datetime, offset } + } + + /// Makes a new `DateTime` with given **local** datetime and offset that + /// presents local timezone. + /// + /// # Example + /// + /// ``` + /// use chrono::DateTime; + /// use chrono::naive::NaiveDate; + /// use chrono::offset::{Utc, FixedOffset}; + /// + /// let naivedatetime_utc = NaiveDate::from_ymd_opt(2000, 1, 12).unwrap().and_hms_opt(2, 0, 0).unwrap(); + /// let datetime_utc = DateTime::::from_utc(naivedatetime_utc, Utc); + /// + /// let timezone_east = FixedOffset::east_opt(8 * 60 * 60).unwrap(); + /// let naivedatetime_east = NaiveDate::from_ymd_opt(2000, 1, 12).unwrap().and_hms_opt(10, 0, 0).unwrap(); + /// let datetime_east = DateTime::::from_local(naivedatetime_east, timezone_east); + /// + /// let timezone_west = FixedOffset::west_opt(7 * 60 * 60).unwrap(); + /// let naivedatetime_west = NaiveDate::from_ymd_opt(2000, 1, 11).unwrap().and_hms_opt(19, 0, 0).unwrap(); + /// let datetime_west = DateTime::::from_local(naivedatetime_west, timezone_west); + + /// assert_eq!(datetime_east, datetime_utc.with_timezone(&timezone_east)); + /// assert_eq!(datetime_west, datetime_utc.with_timezone(&timezone_west)); + /// ``` + #[inline] + pub fn from_local(datetime: NaiveDateTime, offset: Tz::Offset) -> DateTime { + let datetime_utc = datetime - offset.fix(); + + DateTime { datetime: datetime_utc, offset } + } + + /// Retrieves a date component + /// + /// Unless you are immediately planning on turning this into a `DateTime` + /// with the same Timezone you should use the + /// [`date_naive`](DateTime::date_naive) method. + #[inline] + #[deprecated(since = "0.4.23", note = "Use `date_naive()` instead")] + #[allow(deprecated)] + pub fn date(&self) -> Date { + Date::from_utc(self.naive_local().date(), self.offset.clone()) + } + + /// Retrieves the Date without an associated timezone + /// + /// [`NaiveDate`] is a more well-defined type, and has more traits implemented on it, + /// so should be preferred to [`Date`] any time you truly want to operate on Dates. + /// + /// ``` + /// use chrono::prelude::*; + /// + /// let date: DateTime = Utc.with_ymd_and_hms(2020, 1, 1, 0, 0, 0).unwrap(); + /// let other: DateTime = FixedOffset::east_opt(23).unwrap().with_ymd_and_hms(2020, 1, 1, 0, 0, 0).unwrap(); + /// assert_eq!(date.date_naive(), other.date_naive()); + /// ``` + #[inline] + pub fn date_naive(&self) -> NaiveDate { + let local = self.naive_local(); + NaiveDate::from_ymd_opt(local.year(), local.month(), local.day()).unwrap() + } + + /// Retrieves a time component. + /// Unlike `date`, this is not associated to the time zone. + #[inline] + pub fn time(&self) -> NaiveTime { + self.datetime.time() + self.offset.fix() + } + + /// Returns the number of non-leap seconds since January 1, 1970 0:00:00 UTC + /// (aka "UNIX timestamp"). + #[inline] + pub fn timestamp(&self) -> i64 { + self.datetime.timestamp() + } + + /// Returns the number of non-leap-milliseconds since January 1, 1970 UTC + /// + /// Note that this does reduce the number of years that can be represented + /// from ~584 Billion to ~584 Million. (If this is a problem, please file + /// an issue to let me know what domain needs millisecond precision over + /// billions of years, I'm curious.) + /// + /// # Example + /// + /// ``` + /// use chrono::{Utc, TimeZone, NaiveDate}; + /// + /// let dt = NaiveDate::from_ymd_opt(1970, 1, 1).unwrap().and_hms_milli_opt(0, 0, 1, 444).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.timestamp_millis(), 1_444); + /// + /// let dt = NaiveDate::from_ymd_opt(2001, 9, 9).unwrap().and_hms_milli_opt(1, 46, 40, 555).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.timestamp_millis(), 1_000_000_000_555); + /// ``` + #[inline] + pub fn timestamp_millis(&self) -> i64 { + self.datetime.timestamp_millis() + } + + /// Returns the number of non-leap-microseconds since January 1, 1970 UTC + /// + /// Note that this does reduce the number of years that can be represented + /// from ~584 Billion to ~584 Thousand. (If this is a problem, please file + /// an issue to let me know what domain needs microsecond precision over + /// millennia, I'm curious.) + /// + /// # Example + /// + /// ``` + /// use chrono::{Utc, TimeZone, NaiveDate}; + /// + /// let dt = NaiveDate::from_ymd_opt(1970, 1, 1).unwrap().and_hms_micro_opt(0, 0, 1, 444).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.timestamp_micros(), 1_000_444); + /// + /// let dt = NaiveDate::from_ymd_opt(2001, 9, 9).unwrap().and_hms_micro_opt(1, 46, 40, 555).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.timestamp_micros(), 1_000_000_000_000_555); + /// ``` + #[inline] + pub fn timestamp_micros(&self) -> i64 { + self.datetime.timestamp_micros() + } + + /// Returns the number of non-leap-nanoseconds since January 1, 1970 UTC + /// + /// Note that this does reduce the number of years that can be represented + /// from ~584 Billion to ~584. (If this is a problem, please file + /// an issue to let me know what domain needs nanosecond precision over + /// millennia, I'm curious.) + /// + /// # Example + /// + /// ``` + /// use chrono::{Utc, TimeZone, NaiveDate}; + /// + /// let dt = NaiveDate::from_ymd_opt(1970, 1, 1).unwrap().and_hms_nano_opt(0, 0, 1, 444).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.timestamp_nanos(), 1_000_000_444); + /// + /// let dt = NaiveDate::from_ymd_opt(2001, 9, 9).unwrap().and_hms_nano_opt(1, 46, 40, 555).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.timestamp_nanos(), 1_000_000_000_000_000_555); + /// ``` + #[inline] + pub fn timestamp_nanos(&self) -> i64 { + self.datetime.timestamp_nanos() + } + + /// Returns the number of milliseconds since the last second boundary + /// + /// warning: in event of a leap second, this may exceed 999 + /// + /// note: this is not the number of milliseconds since January 1, 1970 0:00:00 UTC + #[inline] + pub fn timestamp_subsec_millis(&self) -> u32 { + self.datetime.timestamp_subsec_millis() + } + + /// Returns the number of microseconds since the last second boundary + /// + /// warning: in event of a leap second, this may exceed 999_999 + /// + /// note: this is not the number of microseconds since January 1, 1970 0:00:00 UTC + #[inline] + pub fn timestamp_subsec_micros(&self) -> u32 { + self.datetime.timestamp_subsec_micros() + } + + /// Returns the number of nanoseconds since the last second boundary + /// + /// warning: in event of a leap second, this may exceed 999_999_999 + /// + /// note: this is not the number of nanoseconds since January 1, 1970 0:00:00 UTC + #[inline] + pub fn timestamp_subsec_nanos(&self) -> u32 { + self.datetime.timestamp_subsec_nanos() + } + + /// Retrieves an associated offset from UTC. + #[inline] + pub fn offset(&self) -> &Tz::Offset { + &self.offset + } + + /// Retrieves an associated time zone. + #[inline] + pub fn timezone(&self) -> Tz { + TimeZone::from_offset(&self.offset) + } + + /// Changes the associated time zone. + /// The returned `DateTime` references the same instant of time from the perspective of the provided time zone. + #[inline] + pub fn with_timezone(&self, tz: &Tz2) -> DateTime { + tz.from_utc_datetime(&self.datetime) + } + + /// Adds given `Duration` to the current date and time. + /// + /// Returns `None` when it will result in overflow. + #[inline] + pub fn checked_add_signed(self, rhs: OldDuration) -> Option> { + let datetime = self.datetime.checked_add_signed(rhs)?; + let tz = self.timezone(); + Some(tz.from_utc_datetime(&datetime)) + } + + /// Adds given `Months` to the current date and time. + /// + /// Returns `None` when it will result in overflow, or if the + /// local time is not valid on the newly calculated date. + /// + /// See [`NaiveDate::checked_add_months`] for more details on behavior + pub fn checked_add_months(self, rhs: Months) -> Option> { + self.naive_local() + .checked_add_months(rhs)? + .and_local_timezone(Tz::from_offset(&self.offset)) + .single() + } + + /// Subtracts given `Duration` from the current date and time. + /// + /// Returns `None` when it will result in overflow. + #[inline] + pub fn checked_sub_signed(self, rhs: OldDuration) -> Option> { + let datetime = self.datetime.checked_sub_signed(rhs)?; + let tz = self.timezone(); + Some(tz.from_utc_datetime(&datetime)) + } + + /// Subtracts given `Months` from the current date and time. + /// + /// Returns `None` when it will result in overflow, or if the + /// local time is not valid on the newly calculated date. + /// + /// See [`NaiveDate::checked_sub_months`] for more details on behavior + pub fn checked_sub_months(self, rhs: Months) -> Option> { + self.naive_local() + .checked_sub_months(rhs)? + .and_local_timezone(Tz::from_offset(&self.offset)) + .single() + } + + /// Add a duration in [`Days`] to the date part of the `DateTime` + /// + /// Returns `None` if the resulting date would be out of range. + pub fn checked_add_days(self, days: Days) -> Option { + self.naive_local() + .checked_add_days(days)? + .and_local_timezone(TimeZone::from_offset(&self.offset)) + .single() + } + + /// Subtract a duration in [`Days`] from the date part of the `DateTime` + /// + /// Returns `None` if the resulting date would be out of range. + pub fn checked_sub_days(self, days: Days) -> Option { + self.naive_local() + .checked_sub_days(days)? + .and_local_timezone(TimeZone::from_offset(&self.offset)) + .single() + } + + /// Subtracts another `DateTime` from the current date and time. + /// This does not overflow or underflow at all. + #[inline] + pub fn signed_duration_since(self, rhs: DateTime) -> OldDuration { + self.datetime.signed_duration_since(rhs.datetime) + } + + /// Returns a view to the naive UTC datetime. + #[inline] + pub fn naive_utc(&self) -> NaiveDateTime { + self.datetime + } + + /// Returns a view to the naive local datetime. + #[inline] + pub fn naive_local(&self) -> NaiveDateTime { + self.datetime + self.offset.fix() + } + + /// Retrieve the elapsed years from now to the given [`DateTime`]. + pub fn years_since(&self, base: Self) -> Option { + let mut years = self.year() - base.year(); + let earlier_time = + (self.month(), self.day(), self.time()) < (base.month(), base.day(), base.time()); + + years -= match earlier_time { + true => 1, + false => 0, + }; + + match years >= 0 { + true => Some(years as u32), + false => None, + } + } + + /// The minimum possible `DateTime`. + pub const MIN_UTC: DateTime = DateTime { datetime: NaiveDateTime::MIN, offset: Utc }; + /// The maximum possible `DateTime`. + pub const MAX_UTC: DateTime = DateTime { datetime: NaiveDateTime::MAX, offset: Utc }; +} + +impl Default for DateTime { + fn default() -> Self { + Utc.from_utc_datetime(&NaiveDateTime::default()) + } +} + +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl Default for DateTime { + fn default() -> Self { + Local.from_utc_datetime(&NaiveDateTime::default()) + } +} + +impl Default for DateTime { + fn default() -> Self { + FixedOffset::west_opt(0).unwrap().from_utc_datetime(&NaiveDateTime::default()) + } +} + +/// Convert a `DateTime` instance into a `DateTime` instance. +impl From> for DateTime { + /// Convert this `DateTime` instance into a `DateTime` instance. + /// + /// Conversion is done via [`DateTime::with_timezone`]. Note that the converted value returned by + /// this will be created with a fixed timezone offset of 0. + fn from(src: DateTime) -> Self { + src.with_timezone(&FixedOffset::east_opt(0).unwrap()) + } +} + +/// Convert a `DateTime` instance into a `DateTime` instance. +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl From> for DateTime { + /// Convert this `DateTime` instance into a `DateTime` instance. + /// + /// Conversion is performed via [`DateTime::with_timezone`], accounting for the difference in timezones. + fn from(src: DateTime) -> Self { + src.with_timezone(&Local) + } +} + +/// Convert a `DateTime` instance into a `DateTime` instance. +impl From> for DateTime { + /// Convert this `DateTime` instance into a `DateTime` instance. + /// + /// Conversion is performed via [`DateTime::with_timezone`], accounting for the timezone + /// difference. + fn from(src: DateTime) -> Self { + src.with_timezone(&Utc) + } +} + +/// Convert a `DateTime` instance into a `DateTime` instance. +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl From> for DateTime { + /// Convert this `DateTime` instance into a `DateTime` instance. + /// + /// Conversion is performed via [`DateTime::with_timezone`]. Returns the equivalent value in local + /// time. + fn from(src: DateTime) -> Self { + src.with_timezone(&Local) + } +} + +/// Convert a `DateTime` instance into a `DateTime` instance. +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl From> for DateTime { + /// Convert this `DateTime` instance into a `DateTime` instance. + /// + /// Conversion is performed via [`DateTime::with_timezone`], accounting for the difference in + /// timezones. + fn from(src: DateTime) -> Self { + src.with_timezone(&Utc) + } +} + +/// Convert a `DateTime` instance into a `DateTime` instance. +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl From> for DateTime { + /// Convert this `DateTime` instance into a `DateTime` instance. + /// + /// Conversion is performed via [`DateTime::with_timezone`]. Note that the converted value returned + /// by this will be created with a fixed timezone offset of 0. + fn from(src: DateTime) -> Self { + src.with_timezone(&FixedOffset::east_opt(0).unwrap()) + } +} + +/// Maps the local datetime to other datetime with given conversion function. +fn map_local(dt: &DateTime, mut f: F) -> Option> +where + F: FnMut(NaiveDateTime) -> Option, +{ + f(dt.naive_local()).and_then(|datetime| dt.timezone().from_local_datetime(&datetime).single()) +} + +impl DateTime { + /// Parses an RFC 2822 date and time string such as `Tue, 1 Jul 2003 10:52:37 +0200`, + /// then returns a new [`DateTime`] with a parsed [`FixedOffset`]. + /// + /// RFC 2822 is the internet message standard that specifies the + /// representation of times in HTTP and email headers. + /// + /// ``` + /// # use chrono::{DateTime, FixedOffset, TimeZone, NaiveDate}; + /// assert_eq!( + /// DateTime::parse_from_rfc2822("Wed, 18 Feb 2015 23:16:09 GMT").unwrap(), + /// FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2015, 2, 18, 23, 16, 9).unwrap() + /// ); + /// ``` + pub fn parse_from_rfc2822(s: &str) -> ParseResult> { + const ITEMS: &[Item<'static>] = &[Item::Fixed(Fixed::RFC2822)]; + let mut parsed = Parsed::new(); + parse(&mut parsed, s, ITEMS.iter())?; + parsed.to_datetime() + } + + /// Parses an RFC 3339 and ISO 8601 date and time string such as `1996-12-19T16:39:57-08:00`, + /// then returns a new [`DateTime`] with a parsed [`FixedOffset`]. + /// + /// Why isn't this named `parse_from_iso8601`? That's because ISO 8601 allows some freedom + /// over the syntax and RFC 3339 exercises that freedom to rigidly define a fixed format. + pub fn parse_from_rfc3339(s: &str) -> ParseResult> { + const ITEMS: &[Item<'static>] = &[Item::Fixed(Fixed::RFC3339)]; + let mut parsed = Parsed::new(); + parse(&mut parsed, s, ITEMS.iter())?; + parsed.to_datetime() + } + + /// Parses a string with the specified format string and returns a new + /// [`DateTime`] with a parsed [`FixedOffset`]. + /// + /// See the [`crate::format::strftime`] module on the supported escape + /// sequences. + /// + /// See also [`TimeZone::datetime_from_str`] which gives a local + /// [`DateTime`] on specific time zone. + /// + /// Note that this method *requires a timezone* in the string. See + /// [`NaiveDateTime::parse_from_str`] + /// for a version that does not require a timezone in the to-be-parsed str. + /// + /// # Example + /// + /// ```rust + /// use chrono::{DateTime, FixedOffset, TimeZone, NaiveDate}; + /// + /// let dt = DateTime::parse_from_str( + /// "1983 Apr 13 12:09:14.274 +0000", "%Y %b %d %H:%M:%S%.3f %z"); + /// assert_eq!(dt, Ok(FixedOffset::east_opt(0).unwrap().from_local_datetime(&NaiveDate::from_ymd_opt(1983, 4, 13).unwrap().and_hms_milli_opt(12, 9, 14, 274).unwrap()).unwrap())); + /// ``` + pub fn parse_from_str(s: &str, fmt: &str) -> ParseResult> { + let mut parsed = Parsed::new(); + parse(&mut parsed, s, StrftimeItems::new(fmt))?; + parsed.to_datetime() + } +} + +impl DateTime +where + Tz::Offset: fmt::Display, +{ + /// Returns an RFC 2822 date and time string such as `Tue, 1 Jul 2003 10:52:37 +0200`. + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + pub fn to_rfc2822(&self) -> String { + let mut result = String::with_capacity(32); + crate::format::write_rfc2822(&mut result, self.naive_local(), self.offset.fix()) + .expect("writing rfc2822 datetime to string should never fail"); + result + } + + /// Returns an RFC 3339 and ISO 8601 date and time string such as `1996-12-19T16:39:57-08:00`. + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + pub fn to_rfc3339(&self) -> String { + let mut result = String::with_capacity(32); + crate::format::write_rfc3339(&mut result, self.naive_local(), self.offset.fix()) + .expect("writing rfc3339 datetime to string should never fail"); + result + } + + /// Return an RFC 3339 and ISO 8601 date and time string with subseconds + /// formatted as per a `SecondsFormat`. + /// + /// If passed `use_z` true and the timezone is UTC (offset 0), use 'Z', as + /// per [`Fixed::TimezoneOffsetColonZ`] If passed `use_z` false, use + /// [`Fixed::TimezoneOffsetColon`] + /// + /// # Examples + /// + /// ```rust + /// # use chrono::{DateTime, FixedOffset, SecondsFormat, TimeZone, Utc, NaiveDate}; + /// let dt = NaiveDate::from_ymd_opt(2018, 1, 26).unwrap().and_hms_micro_opt(18, 30, 9, 453_829).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.to_rfc3339_opts(SecondsFormat::Millis, false), + /// "2018-01-26T18:30:09.453+00:00"); + /// assert_eq!(dt.to_rfc3339_opts(SecondsFormat::Millis, true), + /// "2018-01-26T18:30:09.453Z"); + /// assert_eq!(dt.to_rfc3339_opts(SecondsFormat::Secs, true), + /// "2018-01-26T18:30:09Z"); + /// + /// let pst = FixedOffset::east_opt(8 * 60 * 60).unwrap(); + /// let dt = pst.from_local_datetime(&NaiveDate::from_ymd_opt(2018, 1, 26).unwrap().and_hms_micro_opt(10, 30, 9, 453_829).unwrap()).unwrap(); + /// assert_eq!(dt.to_rfc3339_opts(SecondsFormat::Secs, true), + /// "2018-01-26T10:30:09+08:00"); + /// ``` + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + pub fn to_rfc3339_opts(&self, secform: SecondsFormat, use_z: bool) -> String { + use crate::format::Numeric::*; + use crate::format::Pad::Zero; + use crate::SecondsFormat::*; + + debug_assert!(secform != __NonExhaustive, "Do not use __NonExhaustive!"); + + const PREFIX: &[Item<'static>] = &[ + Item::Numeric(Year, Zero), + Item::Literal("-"), + Item::Numeric(Month, Zero), + Item::Literal("-"), + Item::Numeric(Day, Zero), + Item::Literal("T"), + Item::Numeric(Hour, Zero), + Item::Literal(":"), + Item::Numeric(Minute, Zero), + Item::Literal(":"), + Item::Numeric(Second, Zero), + ]; + + let ssitem = match secform { + Secs => None, + Millis => Some(Item::Fixed(Fixed::Nanosecond3)), + Micros => Some(Item::Fixed(Fixed::Nanosecond6)), + Nanos => Some(Item::Fixed(Fixed::Nanosecond9)), + AutoSi => Some(Item::Fixed(Fixed::Nanosecond)), + __NonExhaustive => unreachable!(), + }; + + let tzitem = Item::Fixed(if use_z { + Fixed::TimezoneOffsetColonZ + } else { + Fixed::TimezoneOffsetColon + }); + + match ssitem { + None => self.format_with_items(PREFIX.iter().chain([tzitem].iter())).to_string(), + Some(s) => self.format_with_items(PREFIX.iter().chain([s, tzitem].iter())).to_string(), + } + } + + /// Formats the combined date and time with the specified formatting items. + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format_with_items<'a, I, B>(&self, items: I) -> DelayedFormat + where + I: Iterator + Clone, + B: Borrow>, + { + let local = self.naive_local(); + DelayedFormat::new_with_offset(Some(local.date()), Some(local.time()), &self.offset, items) + } + + /// Formats the combined date and time with the specified format string. + /// See the [`crate::format::strftime`] module + /// on the supported escape sequences. + /// + /// # Example + /// ```rust + /// use chrono::prelude::*; + /// + /// let date_time: DateTime = Utc.with_ymd_and_hms(2017, 04, 02, 12, 50, 32).unwrap(); + /// let formatted = format!("{}", date_time.format("%d/%m/%Y %H:%M")); + /// assert_eq!(formatted, "02/04/2017 12:50"); + /// ``` + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format<'a>(&self, fmt: &'a str) -> DelayedFormat> { + self.format_with_items(StrftimeItems::new(fmt)) + } + + /// Formats the combined date and time with the specified formatting items and locale. + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + #[inline] + pub fn format_localized_with_items<'a, I, B>( + &self, + items: I, + locale: Locale, + ) -> DelayedFormat + where + I: Iterator + Clone, + B: Borrow>, + { + let local = self.naive_local(); + DelayedFormat::new_with_offset_and_locale( + Some(local.date()), + Some(local.time()), + &self.offset, + items, + locale, + ) + } + + /// Formats the combined date and time with the specified format string and + /// locale. + /// + /// See the [`crate::format::strftime`] module on the supported escape + /// sequences. + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + #[inline] + pub fn format_localized<'a>( + &self, + fmt: &'a str, + locale: Locale, + ) -> DelayedFormat> { + self.format_localized_with_items(StrftimeItems::new_with_locale(fmt, locale), locale) + } +} + +impl Datelike for DateTime { + #[inline] + fn year(&self) -> i32 { + self.naive_local().year() + } + #[inline] + fn month(&self) -> u32 { + self.naive_local().month() + } + #[inline] + fn month0(&self) -> u32 { + self.naive_local().month0() + } + #[inline] + fn day(&self) -> u32 { + self.naive_local().day() + } + #[inline] + fn day0(&self) -> u32 { + self.naive_local().day0() + } + #[inline] + fn ordinal(&self) -> u32 { + self.naive_local().ordinal() + } + #[inline] + fn ordinal0(&self) -> u32 { + self.naive_local().ordinal0() + } + #[inline] + fn weekday(&self) -> Weekday { + self.naive_local().weekday() + } + #[inline] + fn iso_week(&self) -> IsoWeek { + self.naive_local().iso_week() + } + + #[inline] + fn with_year(&self, year: i32) -> Option> { + map_local(self, |datetime| datetime.with_year(year)) + } + + #[inline] + fn with_month(&self, month: u32) -> Option> { + map_local(self, |datetime| datetime.with_month(month)) + } + + #[inline] + fn with_month0(&self, month0: u32) -> Option> { + map_local(self, |datetime| datetime.with_month0(month0)) + } + + #[inline] + fn with_day(&self, day: u32) -> Option> { + map_local(self, |datetime| datetime.with_day(day)) + } + + #[inline] + fn with_day0(&self, day0: u32) -> Option> { + map_local(self, |datetime| datetime.with_day0(day0)) + } + + #[inline] + fn with_ordinal(&self, ordinal: u32) -> Option> { + map_local(self, |datetime| datetime.with_ordinal(ordinal)) + } + + #[inline] + fn with_ordinal0(&self, ordinal0: u32) -> Option> { + map_local(self, |datetime| datetime.with_ordinal0(ordinal0)) + } +} + +impl Timelike for DateTime { + #[inline] + fn hour(&self) -> u32 { + self.naive_local().hour() + } + #[inline] + fn minute(&self) -> u32 { + self.naive_local().minute() + } + #[inline] + fn second(&self) -> u32 { + self.naive_local().second() + } + #[inline] + fn nanosecond(&self) -> u32 { + self.naive_local().nanosecond() + } + + #[inline] + fn with_hour(&self, hour: u32) -> Option> { + map_local(self, |datetime| datetime.with_hour(hour)) + } + + #[inline] + fn with_minute(&self, min: u32) -> Option> { + map_local(self, |datetime| datetime.with_minute(min)) + } + + #[inline] + fn with_second(&self, sec: u32) -> Option> { + map_local(self, |datetime| datetime.with_second(sec)) + } + + #[inline] + fn with_nanosecond(&self, nano: u32) -> Option> { + map_local(self, |datetime| datetime.with_nanosecond(nano)) + } +} + +// we need them as automatic impls cannot handle associated types +impl Copy for DateTime where ::Offset: Copy {} +unsafe impl Send for DateTime where ::Offset: Send {} + +impl PartialEq> for DateTime { + fn eq(&self, other: &DateTime) -> bool { + self.datetime == other.datetime + } +} + +impl Eq for DateTime {} + +impl PartialOrd> for DateTime { + /// Compare two DateTimes based on their true time, ignoring time zones + /// + /// # Example + /// + /// ``` + /// use chrono::prelude::*; + /// + /// let earlier = Utc.with_ymd_and_hms(2015, 5, 15, 2, 0, 0).unwrap().with_timezone(&FixedOffset::west_opt(1 * 3600).unwrap()); + /// let later = Utc.with_ymd_and_hms(2015, 5, 15, 3, 0, 0).unwrap().with_timezone(&FixedOffset::west_opt(5 * 3600).unwrap()); + /// + /// assert_eq!(earlier.to_string(), "2015-05-15 01:00:00 -01:00"); + /// assert_eq!(later.to_string(), "2015-05-14 22:00:00 -05:00"); + /// + /// assert!(later > earlier); + /// ``` + fn partial_cmp(&self, other: &DateTime) -> Option { + self.datetime.partial_cmp(&other.datetime) + } +} + +impl Ord for DateTime { + fn cmp(&self, other: &DateTime) -> Ordering { + self.datetime.cmp(&other.datetime) + } +} + +impl hash::Hash for DateTime { + fn hash(&self, state: &mut H) { + self.datetime.hash(state) + } +} + +impl Add for DateTime { + type Output = DateTime; + + #[inline] + fn add(self, rhs: OldDuration) -> DateTime { + self.checked_add_signed(rhs).expect("`DateTime + Duration` overflowed") + } +} + +impl AddAssign for DateTime { + #[inline] + fn add_assign(&mut self, rhs: OldDuration) { + let datetime = + self.datetime.checked_add_signed(rhs).expect("`DateTime + Duration` overflowed"); + let tz = self.timezone(); + *self = tz.from_utc_datetime(&datetime); + } +} + +impl Add for DateTime { + type Output = DateTime; + + fn add(self, rhs: Months) -> Self::Output { + self.checked_add_months(rhs).unwrap() + } +} + +impl Sub for DateTime { + type Output = DateTime; + + #[inline] + fn sub(self, rhs: OldDuration) -> DateTime { + self.checked_sub_signed(rhs).expect("`DateTime - Duration` overflowed") + } +} + +impl SubAssign for DateTime { + #[inline] + fn sub_assign(&mut self, rhs: OldDuration) { + let datetime = + self.datetime.checked_sub_signed(rhs).expect("`DateTime - Duration` overflowed"); + let tz = self.timezone(); + *self = tz.from_utc_datetime(&datetime) + } +} + +impl Sub for DateTime { + type Output = DateTime; + + fn sub(self, rhs: Months) -> Self::Output { + self.checked_sub_months(rhs).unwrap() + } +} + +impl Sub> for DateTime { + type Output = OldDuration; + + #[inline] + fn sub(self, rhs: DateTime) -> OldDuration { + self.signed_duration_since(rhs) + } +} + +impl Add for DateTime { + type Output = DateTime; + + fn add(self, days: Days) -> Self::Output { + self.checked_add_days(days).unwrap() + } +} + +impl Sub for DateTime { + type Output = DateTime; + + fn sub(self, days: Days) -> Self::Output { + self.checked_sub_days(days).unwrap() + } +} + +impl fmt::Debug for DateTime { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.naive_local().fmt(f)?; + self.offset.fmt(f) + } +} + +impl fmt::Display for DateTime +where + Tz::Offset: fmt::Display, +{ + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.naive_local().fmt(f)?; + f.write_char(' ')?; + self.offset.fmt(f) + } +} + +/// Accepts a relaxed form of RFC3339. +/// A space or a 'T' are acepted as the separator between the date and time +/// parts. Additional spaces are allowed between each component. +/// +/// All of these examples are equivalent: +/// ``` +/// # use chrono::{DateTime, Utc}; +/// "2012-12-12T12:12:12Z".parse::>(); +/// "2012-12-12 12:12:12Z".parse::>(); +/// "2012- 12-12T12: 12:12Z".parse::>(); +/// ``` +impl str::FromStr for DateTime { + type Err = ParseError; + + fn from_str(s: &str) -> ParseResult> { + s.parse::>().map(|dt| dt.with_timezone(&Utc)) + } +} + +/// Accepts a relaxed form of RFC3339. +/// A space or a 'T' are acepted as the separator between the date and time +/// parts. Additional spaces are allowed between each component. +/// +/// All of these examples are equivalent: +/// ``` +/// # use chrono::{DateTime, Local}; +/// "2012-12-12T12:12:12Z".parse::>(); +/// "2012-12-12 12:12:12Z".parse::>(); +/// "2012- 12-12T12: 12:12Z".parse::>(); +/// ``` +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl str::FromStr for DateTime { + type Err = ParseError; + + fn from_str(s: &str) -> ParseResult> { + s.parse::>().map(|dt| dt.with_timezone(&Local)) + } +} + +#[cfg(any(feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(feature = "std")))] +impl From for DateTime { + fn from(t: SystemTime) -> DateTime { + let (sec, nsec) = match t.duration_since(UNIX_EPOCH) { + Ok(dur) => (dur.as_secs() as i64, dur.subsec_nanos()), + Err(e) => { + // unlikely but should be handled + let dur = e.duration(); + let (sec, nsec) = (dur.as_secs() as i64, dur.subsec_nanos()); + if nsec == 0 { + (-sec, 0) + } else { + (-sec - 1, 1_000_000_000 - nsec) + } + } + }; + Utc.timestamp_opt(sec, nsec).unwrap() + } +} + +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl From for DateTime { + fn from(t: SystemTime) -> DateTime { + DateTime::::from(t).with_timezone(&Local) + } +} + +#[cfg(any(feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(feature = "std")))] +impl From> for SystemTime { + fn from(dt: DateTime) -> SystemTime { + use std::time::Duration; + + let sec = dt.timestamp(); + let nsec = dt.timestamp_subsec_nanos(); + if sec < 0 { + // unlikely but should be handled + UNIX_EPOCH - Duration::new(-sec as u64, 0) + Duration::new(0, nsec) + } else { + UNIX_EPOCH + Duration::new(sec as u64, nsec) + } + } +} + +#[cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) +))] +#[cfg_attr( + docsrs, + doc(cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + ))) +)] +impl From for DateTime { + fn from(date: js_sys::Date) -> DateTime { + DateTime::::from(&date) + } +} + +#[cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) +))] +#[cfg_attr( + docsrs, + doc(cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + ))) +)] +impl From<&js_sys::Date> for DateTime { + fn from(date: &js_sys::Date) -> DateTime { + Utc.timestamp_millis_opt(date.get_time() as i64).unwrap() + } +} + +#[cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) +))] +#[cfg_attr( + docsrs, + doc(cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + ))) +)] +impl From> for js_sys::Date { + /// Converts a `DateTime` to a JS `Date`. The resulting value may be lossy, + /// any values that have a millisecond timestamp value greater/less than ±8,640,000,000,000,000 + /// (April 20, 271821 BCE ~ September 13, 275760 CE) will become invalid dates in JS. + fn from(date: DateTime) -> js_sys::Date { + let js_millis = wasm_bindgen::JsValue::from_f64(date.timestamp_millis() as f64); + js_sys::Date::new(&js_millis) + } +} + +// Note that implementation of Arbitrary cannot be simply derived for DateTime, due to +// the nontrivial bound ::Offset: Arbitrary. +#[cfg(feature = "arbitrary")] +impl<'a, Tz> arbitrary::Arbitrary<'a> for DateTime +where + Tz: TimeZone, + ::Offset: arbitrary::Arbitrary<'a>, +{ + fn arbitrary(u: &mut arbitrary::Unstructured<'a>) -> arbitrary::Result> { + let datetime = NaiveDateTime::arbitrary(u)?; + let offset = ::Offset::arbitrary(u)?; + Ok(DateTime::from_utc(datetime, offset)) + } +} + +#[test] +fn test_add_sub_months() { + let utc_dt = Utc.with_ymd_and_hms(2018, 9, 5, 23, 58, 0).unwrap(); + assert_eq!(utc_dt + Months::new(15), Utc.with_ymd_and_hms(2019, 12, 5, 23, 58, 0).unwrap()); + + let utc_dt = Utc.with_ymd_and_hms(2020, 1, 31, 23, 58, 0).unwrap(); + assert_eq!(utc_dt + Months::new(1), Utc.with_ymd_and_hms(2020, 2, 29, 23, 58, 0).unwrap()); + assert_eq!(utc_dt + Months::new(2), Utc.with_ymd_and_hms(2020, 3, 31, 23, 58, 0).unwrap()); + + let utc_dt = Utc.with_ymd_and_hms(2018, 9, 5, 23, 58, 0).unwrap(); + assert_eq!(utc_dt - Months::new(15), Utc.with_ymd_and_hms(2017, 6, 5, 23, 58, 0).unwrap()); + + let utc_dt = Utc.with_ymd_and_hms(2020, 3, 31, 23, 58, 0).unwrap(); + assert_eq!(utc_dt - Months::new(1), Utc.with_ymd_and_hms(2020, 2, 29, 23, 58, 0).unwrap()); + assert_eq!(utc_dt - Months::new(2), Utc.with_ymd_and_hms(2020, 1, 31, 23, 58, 0).unwrap()); +} + +#[test] +fn test_auto_conversion() { + let utc_dt = Utc.with_ymd_and_hms(2018, 9, 5, 23, 58, 0).unwrap(); + let cdt_dt = FixedOffset::west_opt(5 * 60 * 60) + .unwrap() + .with_ymd_and_hms(2018, 9, 5, 18, 58, 0) + .unwrap(); + let utc_dt2: DateTime = cdt_dt.into(); + assert_eq!(utc_dt, utc_dt2); +} + +#[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))] +fn test_encodable_json(to_string_utc: FUtc, to_string_fixed: FFixed) +where + FUtc: Fn(&DateTime) -> Result, + FFixed: Fn(&DateTime) -> Result, + E: ::core::fmt::Debug, +{ + assert_eq!( + to_string_utc(&Utc.with_ymd_and_hms(2014, 7, 24, 12, 34, 6).unwrap()).ok(), + Some(r#""2014-07-24T12:34:06Z""#.into()) + ); + + assert_eq!( + to_string_fixed( + &FixedOffset::east_opt(3660).unwrap().with_ymd_and_hms(2014, 7, 24, 12, 34, 6).unwrap() + ) + .ok(), + Some(r#""2014-07-24T12:34:06+01:01""#.into()) + ); + assert_eq!( + to_string_fixed( + &FixedOffset::east_opt(3650).unwrap().with_ymd_and_hms(2014, 7, 24, 12, 34, 6).unwrap() + ) + .ok(), + Some(r#""2014-07-24T12:34:06+01:00:50""#.into()) + ); +} + +#[cfg(all(test, feature = "clock", any(feature = "rustc-serialize", feature = "serde")))] +fn test_decodable_json( + utc_from_str: FUtc, + fixed_from_str: FFixed, + local_from_str: FLocal, +) where + FUtc: Fn(&str) -> Result, E>, + FFixed: Fn(&str) -> Result, E>, + FLocal: Fn(&str) -> Result, E>, + E: ::core::fmt::Debug, +{ + // should check against the offset as well (the normal DateTime comparison will ignore them) + fn norm(dt: &Option>) -> Option<(&DateTime, &Tz::Offset)> { + dt.as_ref().map(|dt| (dt, dt.offset())) + } + + assert_eq!( + norm(&utc_from_str(r#""2014-07-24T12:34:06Z""#).ok()), + norm(&Some(Utc.with_ymd_and_hms(2014, 7, 24, 12, 34, 6).unwrap())) + ); + assert_eq!( + norm(&utc_from_str(r#""2014-07-24T13:57:06+01:23""#).ok()), + norm(&Some(Utc.with_ymd_and_hms(2014, 7, 24, 12, 34, 6).unwrap())) + ); + + assert_eq!( + norm(&fixed_from_str(r#""2014-07-24T12:34:06Z""#).ok()), + norm(&Some( + FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2014, 7, 24, 12, 34, 6).unwrap() + )) + ); + assert_eq!( + norm(&fixed_from_str(r#""2014-07-24T13:57:06+01:23""#).ok()), + norm(&Some( + FixedOffset::east_opt(60 * 60 + 23 * 60) + .unwrap() + .with_ymd_and_hms(2014, 7, 24, 13, 57, 6) + .unwrap() + )) + ); + + // we don't know the exact local offset but we can check that + // the conversion didn't change the instant itself + assert_eq!( + local_from_str(r#""2014-07-24T12:34:06Z""#).expect("local shouuld parse"), + Utc.with_ymd_and_hms(2014, 7, 24, 12, 34, 6).unwrap() + ); + assert_eq!( + local_from_str(r#""2014-07-24T13:57:06+01:23""#).expect("local should parse with offset"), + Utc.with_ymd_and_hms(2014, 7, 24, 12, 34, 6).unwrap() + ); + + assert!(utc_from_str(r#""2014-07-32T12:34:06Z""#).is_err()); + assert!(fixed_from_str(r#""2014-07-32T12:34:06Z""#).is_err()); +} + +#[cfg(all(test, feature = "clock", feature = "rustc-serialize"))] +fn test_decodable_json_timestamps( + utc_from_str: FUtc, + fixed_from_str: FFixed, + local_from_str: FLocal, +) where + FUtc: Fn(&str) -> Result, E>, + FFixed: Fn(&str) -> Result, E>, + FLocal: Fn(&str) -> Result, E>, + E: ::core::fmt::Debug, +{ + fn norm(dt: &Option>) -> Option<(&DateTime, &Tz::Offset)> { + dt.as_ref().map(|dt| (dt, dt.offset())) + } + + assert_eq!( + norm(&utc_from_str("0").ok().map(DateTime::from)), + norm(&Some(Utc.with_ymd_and_hms(1970, 1, 1, 0, 0, 0).unwrap())) + ); + assert_eq!( + norm(&utc_from_str("-1").ok().map(DateTime::from)), + norm(&Some(Utc.with_ymd_and_hms(1969, 12, 31, 23, 59, 59).unwrap())) + ); + + assert_eq!( + norm(&fixed_from_str("0").ok().map(DateTime::from)), + norm(&Some( + FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(1970, 1, 1, 0, 0, 0).unwrap() + )) + ); + assert_eq!( + norm(&fixed_from_str("-1").ok().map(DateTime::from)), + norm(&Some( + FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(1969, 12, 31, 23, 59, 59).unwrap() + )) + ); + + assert_eq!( + *fixed_from_str("0").expect("0 timestamp should parse"), + Utc.with_ymd_and_hms(1970, 1, 1, 0, 0, 0).unwrap() + ); + assert_eq!( + *local_from_str("-1").expect("-1 timestamp should parse"), + Utc.with_ymd_and_hms(1969, 12, 31, 23, 59, 59).unwrap() + ); +} diff --git a/javascript-engine/external/chrono/src/datetime/rustc_serialize.rs b/javascript-engine/external/chrono/src/datetime/rustc_serialize.rs new file mode 100644 index 0000000..18a67d6 --- /dev/null +++ b/javascript-engine/external/chrono/src/datetime/rustc_serialize.rs @@ -0,0 +1,123 @@ +#![cfg_attr(docsrs, doc(cfg(feature = "rustc-serialize")))] + +use super::DateTime; +#[cfg(feature = "clock")] +use crate::offset::Local; +use crate::offset::{FixedOffset, LocalResult, TimeZone, Utc}; +use core::fmt; +use core::ops::Deref; +use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; + +impl Encodable for DateTime { + fn encode(&self, s: &mut S) -> Result<(), S::Error> { + format!("{:?}", self).encode(s) + } +} + +// lik? function to convert a LocalResult into a serde-ish Result +fn from(me: LocalResult, d: &mut D) -> Result +where + D: Decoder, + T: fmt::Display, +{ + match me { + LocalResult::None => Err(d.error("value is not a legal timestamp")), + LocalResult::Ambiguous(..) => Err(d.error("value is an ambiguous timestamp")), + LocalResult::Single(val) => Ok(val), + } +} + +impl Decodable for DateTime { + fn decode(d: &mut D) -> Result, D::Error> { + d.read_str()?.parse::>().map_err(|_| d.error("invalid date and time")) + } +} + +#[allow(deprecated)] +impl Decodable for TsSeconds { + #[allow(deprecated)] + fn decode(d: &mut D) -> Result, D::Error> { + from(FixedOffset::east_opt(0).unwrap().timestamp_opt(d.read_i64()?, 0), d).map(TsSeconds) + } +} + +impl Decodable for DateTime { + fn decode(d: &mut D) -> Result, D::Error> { + d.read_str()? + .parse::>() + .map(|dt| dt.with_timezone(&Utc)) + .map_err(|_| d.error("invalid date and time")) + } +} + +/// A [`DateTime`] that can be deserialized from a timestamp +/// +/// A timestamp here is seconds since the epoch +#[derive(Debug)] +pub struct TsSeconds(DateTime); + +#[allow(deprecated)] +impl From> for DateTime { + /// Pull the inner `DateTime` out + #[allow(deprecated)] + fn from(obj: TsSeconds) -> DateTime { + obj.0 + } +} + +#[allow(deprecated)] +impl Deref for TsSeconds { + type Target = DateTime; + + fn deref(&self) -> &Self::Target { + &self.0 + } +} + +#[allow(deprecated)] +impl Decodable for TsSeconds { + fn decode(d: &mut D) -> Result, D::Error> { + from(Utc.timestamp_opt(d.read_i64()?, 0), d).map(TsSeconds) + } +} + +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl Decodable for DateTime { + fn decode(d: &mut D) -> Result, D::Error> { + match d.read_str()?.parse::>() { + Ok(dt) => Ok(dt.with_timezone(&Local)), + Err(_) => Err(d.error("invalid date and time")), + } + } +} + +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +#[allow(deprecated)] +impl Decodable for TsSeconds { + #[allow(deprecated)] + fn decode(d: &mut D) -> Result, D::Error> { + from(Utc.timestamp_opt(d.read_i64()?, 0), d).map(|dt| TsSeconds(dt.with_timezone(&Local))) + } +} + +#[cfg(test)] +use rustc_serialize::json; + +#[test] +fn test_encodable() { + super::test_encodable_json(json::encode, json::encode); +} + +#[cfg(feature = "clock")] +#[test] +fn test_decodable() { + super::test_decodable_json(json::decode, json::decode, json::decode); +} + +#[cfg(feature = "clock")] +#[test] +fn test_decodable_timestamps() { + super::test_decodable_json_timestamps(json::decode, json::decode, json::decode); +} diff --git a/javascript-engine/external/chrono/src/datetime/serde.rs b/javascript-engine/external/chrono/src/datetime/serde.rs new file mode 100644 index 0000000..ab0126e --- /dev/null +++ b/javascript-engine/external/chrono/src/datetime/serde.rs @@ -0,0 +1,1150 @@ +#![cfg_attr(docsrs, doc(cfg(feature = "serde")))] + +use core::fmt; +use serde::{de, ser}; + +use super::DateTime; +use crate::naive::datetime::serde::serde_from; +#[cfg(feature = "clock")] +use crate::offset::Local; +use crate::offset::{FixedOffset, TimeZone, Utc}; + +#[doc(hidden)] +#[derive(Debug)] +pub struct SecondsTimestampVisitor; + +#[doc(hidden)] +#[derive(Debug)] +pub struct NanoSecondsTimestampVisitor; + +#[doc(hidden)] +#[derive(Debug)] +pub struct MicroSecondsTimestampVisitor; + +#[doc(hidden)] +#[derive(Debug)] +pub struct MilliSecondsTimestampVisitor; + +/// Serialize into a rfc3339 time string +/// +/// See [the `serde` module](./serde/index.html) for alternate +/// serializations. +impl ser::Serialize for DateTime { + fn serialize(&self, serializer: S) -> Result + where + S: ser::Serializer, + { + struct FormatWrapped<'a, D: 'a> { + inner: &'a D, + } + + impl<'a, D: fmt::Debug> fmt::Display for FormatWrapped<'a, D> { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.inner.fmt(f) + } + } + + // Debug formatting is correct RFC3339, and it allows Zulu. + serializer.collect_str(&FormatWrapped { inner: &self }) + } +} + +struct DateTimeVisitor; + +impl<'de> de::Visitor<'de> for DateTimeVisitor { + type Value = DateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a formatted date and time string or a unix timestamp") + } + + fn visit_str(self, value: &str) -> Result + where + E: de::Error, + { + value.parse().map_err(E::custom) + } +} + +/// Deserialize a value that optionally includes a timezone offset in its +/// string representation +/// +/// The value to be deserialized must be an rfc3339 string. +/// +/// See [the `serde` module](./serde/index.html) for alternate +/// deserialization formats. +impl<'de> de::Deserialize<'de> for DateTime { + fn deserialize(deserializer: D) -> Result + where + D: de::Deserializer<'de>, + { + deserializer.deserialize_str(DateTimeVisitor) + } +} + +/// Deserialize into a UTC value +/// +/// The value to be deserialized must be an rfc3339 string. +/// +/// See [the `serde` module](./serde/index.html) for alternate +/// deserialization formats. +impl<'de> de::Deserialize<'de> for DateTime { + fn deserialize(deserializer: D) -> Result + where + D: de::Deserializer<'de>, + { + deserializer.deserialize_str(DateTimeVisitor).map(|dt| dt.with_timezone(&Utc)) + } +} + +/// Deserialize a value that includes no timezone in its string +/// representation +/// +/// The value to be deserialized must be an rfc3339 string. +/// +/// See [the `serde` module](./serde/index.html) for alternate +/// serialization formats. +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl<'de> de::Deserialize<'de> for DateTime { + fn deserialize(deserializer: D) -> Result + where + D: de::Deserializer<'de>, + { + deserializer.deserialize_str(DateTimeVisitor).map(|dt| dt.with_timezone(&Local)) + } +} + +/// Ser/de to/from timestamps in nanoseconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::serde::ts_nanoseconds; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_nanoseconds")] +/// time: DateTime +/// } +/// +/// let time = NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_nano_opt(02, 04, 59, 918355733).unwrap().and_local_timezone(Utc).unwrap(); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918355733}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_nanoseconds { + use core::fmt; + use serde::{de, ser}; + + use crate::offset::TimeZone; + use crate::{DateTime, Utc}; + + use super::{serde_from, NanoSecondsTimestampVisitor}; + + /// Serialize a UTC datetime into an integer number of nanoseconds since the epoch + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; + /// # use serde_derive::Serialize; + /// use chrono::serde::ts_nanoseconds::serialize as to_nano_ts; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_nano_ts")] + /// time: DateTime + /// } + /// + /// let my_s = S { + /// time: NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_nano_opt(02, 04, 59, 918355733).unwrap().and_local_timezone(Utc).unwrap(), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918355733}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(dt: &DateTime, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.serialize_i64(dt.timestamp_nanos()) + } + + /// Deserialize a [`DateTime`] from a nanosecond timestamp + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{DateTime, Utc}; + /// # use serde_derive::Deserialize; + /// use chrono::serde::ts_nanoseconds::deserialize as from_nano_ts; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_nano_ts")] + /// time: DateTime + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918355733 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(NanoSecondsTimestampVisitor) + } + + impl<'de> de::Visitor<'de> for NanoSecondsTimestampVisitor { + type Value = DateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in nanoseconds") + } + + /// Deserialize a timestamp in nanoseconds since the epoch + fn visit_i64(self, value: i64) -> Result + where + E: de::Error, + { + serde_from( + Utc.timestamp_opt(value / 1_000_000_000, (value % 1_000_000_000) as u32), + &value, + ) + } + + /// Deserialize a timestamp in nanoseconds since the epoch + fn visit_u64(self, value: u64) -> Result + where + E: de::Error, + { + serde_from( + Utc.timestamp_opt((value / 1_000_000_000) as i64, (value % 1_000_000_000) as u32), + &value, + ) + } + } +} + +/// Ser/de to/from optional timestamps in nanoseconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::serde::ts_nanoseconds_option; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_nanoseconds_option")] +/// time: Option> +/// } +/// +/// let time = Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_nano_opt(02, 04, 59, 918355733).unwrap().and_local_timezone(Utc).unwrap()); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918355733}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_nanoseconds_option { + use core::fmt; + use serde::{de, ser}; + + use crate::{DateTime, Utc}; + + use super::NanoSecondsTimestampVisitor; + + /// Serialize a UTC datetime into an integer number of nanoseconds since the epoch or none + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; + /// # use serde_derive::Serialize; + /// use chrono::serde::ts_nanoseconds_option::serialize as to_nano_tsopt; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_nano_tsopt")] + /// time: Option> + /// } + /// + /// let my_s = S { + /// time: Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_nano_opt(02, 04, 59, 918355733).unwrap().and_local_timezone(Utc).unwrap()), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918355733}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(opt: &Option>, serializer: S) -> Result + where + S: ser::Serializer, + { + match *opt { + Some(ref dt) => serializer.serialize_some(&dt.timestamp_nanos()), + None => serializer.serialize_none(), + } + } + + /// Deserialize a `DateTime` from a nanosecond timestamp or none + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{DateTime, Utc}; + /// # use serde_derive::Deserialize; + /// use chrono::serde::ts_nanoseconds_option::deserialize as from_nano_tsopt; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_nano_tsopt")] + /// time: Option> + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918355733 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result>, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_option(OptionNanoSecondsTimestampVisitor) + } + + struct OptionNanoSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for OptionNanoSecondsTimestampVisitor { + type Value = Option>; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in nanoseconds or none") + } + + /// Deserialize a timestamp in nanoseconds since the epoch + fn visit_some(self, d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(NanoSecondsTimestampVisitor).map(Some) + } + + /// Deserialize a timestamp in nanoseconds since the epoch + fn visit_none(self) -> Result + where + E: de::Error, + { + Ok(None) + } + + /// Deserialize a timestamp in nanoseconds since the epoch + fn visit_unit(self) -> Result + where + E: de::Error, + { + Ok(None) + } + } +} + +/// Ser/de to/from timestamps in microseconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::serde::ts_microseconds; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_microseconds")] +/// time: DateTime +/// } +/// +/// let time = NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_micro_opt(02, 04, 59, 918355).unwrap().and_local_timezone(Utc).unwrap(); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918355}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_microseconds { + use core::fmt; + use serde::{de, ser}; + + use super::{serde_from, MicroSecondsTimestampVisitor}; + use crate::offset::TimeZone; + use crate::{DateTime, Utc}; + + /// Serialize a UTC datetime into an integer number of microseconds since the epoch + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; + /// # use serde_derive::Serialize; + /// use chrono::serde::ts_microseconds::serialize as to_micro_ts; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_micro_ts")] + /// time: DateTime + /// } + /// + /// let my_s = S { + /// time: NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_micro_opt(02, 04, 59, 918355).unwrap().and_local_timezone(Utc).unwrap(), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918355}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(dt: &DateTime, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.serialize_i64(dt.timestamp_micros()) + } + + /// Deserialize a `DateTime` from a microsecond timestamp + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{DateTime, Utc}; + /// # use serde_derive::Deserialize; + /// use chrono::serde::ts_microseconds::deserialize as from_micro_ts; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_micro_ts")] + /// time: DateTime + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918355 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(MicroSecondsTimestampVisitor) + } + + impl<'de> de::Visitor<'de> for MicroSecondsTimestampVisitor { + type Value = DateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in microseconds") + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_i64(self, value: i64) -> Result + where + E: de::Error, + { + serde_from( + Utc.timestamp_opt(value / 1_000_000, ((value % 1_000_000) * 1_000) as u32), + &value, + ) + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_u64(self, value: u64) -> Result + where + E: de::Error, + { + serde_from( + Utc.timestamp_opt((value / 1_000_000) as i64, ((value % 1_000_000) * 1_000) as u32), + &value, + ) + } + } +} + +/// Ser/de to/from optional timestamps in microseconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::serde::ts_microseconds_option; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_microseconds_option")] +/// time: Option> +/// } +/// +/// let time = Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_micro_opt(02, 04, 59, 918355).unwrap().and_local_timezone(Utc).unwrap()); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918355}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_microseconds_option { + use core::fmt; + use serde::{de, ser}; + + use super::MicroSecondsTimestampVisitor; + use crate::{DateTime, Utc}; + + /// Serialize a UTC datetime into an integer number of microseconds since the epoch or none + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; + /// # use serde_derive::Serialize; + /// use chrono::serde::ts_microseconds_option::serialize as to_micro_tsopt; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_micro_tsopt")] + /// time: Option> + /// } + /// + /// let my_s = S { + /// time: Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_micro_opt(02, 04, 59, 918355).unwrap().and_local_timezone(Utc).unwrap()), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918355}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(opt: &Option>, serializer: S) -> Result + where + S: ser::Serializer, + { + match *opt { + Some(ref dt) => serializer.serialize_some(&dt.timestamp_micros()), + None => serializer.serialize_none(), + } + } + + /// Deserialize a `DateTime` from a microsecond timestamp or none + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{DateTime, Utc}; + /// # use serde_derive::Deserialize; + /// use chrono::serde::ts_microseconds_option::deserialize as from_micro_tsopt; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_micro_tsopt")] + /// time: Option> + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918355 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result>, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_option(OptionMicroSecondsTimestampVisitor) + } + + struct OptionMicroSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for OptionMicroSecondsTimestampVisitor { + type Value = Option>; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in microseconds or none") + } + + /// Deserialize a timestamp in microseconds since the epoch + fn visit_some(self, d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(MicroSecondsTimestampVisitor).map(Some) + } + + /// Deserialize a timestamp in microseconds since the epoch + fn visit_none(self) -> Result + where + E: de::Error, + { + Ok(None) + } + + /// Deserialize a timestamp in microseconds since the epoch + fn visit_unit(self) -> Result + where + E: de::Error, + { + Ok(None) + } + } +} + +/// Ser/de to/from timestamps in milliseconds +/// +/// Intended for use with `serde`s `with` attribute. +/// +/// # Example +/// +/// ```rust +/// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::serde::ts_milliseconds; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_milliseconds")] +/// time: DateTime +/// } +/// +/// let time = NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_milli_opt(02, 04, 59, 918).unwrap().and_local_timezone(Utc).unwrap(); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_milliseconds { + use core::fmt; + use serde::{de, ser}; + + use super::{serde_from, MilliSecondsTimestampVisitor}; + use crate::offset::TimeZone; + use crate::{DateTime, Utc}; + + /// Serialize a UTC datetime into an integer number of milliseconds since the epoch + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; + /// # use serde_derive::Serialize; + /// use chrono::serde::ts_milliseconds::serialize as to_milli_ts; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_milli_ts")] + /// time: DateTime + /// } + /// + /// let my_s = S { + /// time: NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_milli_opt(02, 04, 59, 918).unwrap().and_local_timezone(Utc).unwrap(), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(dt: &DateTime, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.serialize_i64(dt.timestamp_millis()) + } + + /// Deserialize a `DateTime` from a millisecond timestamp + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{DateTime, Utc}; + /// # use serde_derive::Deserialize; + /// use chrono::serde::ts_milliseconds::deserialize as from_milli_ts; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_milli_ts")] + /// time: DateTime + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(MilliSecondsTimestampVisitor).map(|dt| dt.with_timezone(&Utc)) + } + + impl<'de> de::Visitor<'de> for MilliSecondsTimestampVisitor { + type Value = DateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in milliseconds") + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_i64(self, value: i64) -> Result + where + E: de::Error, + { + serde_from(Utc.timestamp_opt(value / 1000, ((value % 1000) * 1_000_000) as u32), &value) + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_u64(self, value: u64) -> Result + where + E: de::Error, + { + serde_from( + Utc.timestamp_opt((value / 1000) as i64, ((value % 1000) * 1_000_000) as u32), + &value, + ) + } + } +} + +/// Ser/de to/from optional timestamps in milliseconds +/// +/// Intended for use with `serde`s `with` attribute. +/// +/// # Example +/// +/// ```rust +/// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::serde::ts_milliseconds_option; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_milliseconds_option")] +/// time: Option> +/// } +/// +/// let time = Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_milli_opt(02, 04, 59, 918).unwrap().and_local_timezone(Utc).unwrap()); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_milliseconds_option { + use core::fmt; + use serde::{de, ser}; + + use super::MilliSecondsTimestampVisitor; + use crate::{DateTime, Utc}; + + /// Serialize a UTC datetime into an integer number of milliseconds since the epoch or none + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{TimeZone, DateTime, Utc, NaiveDate}; + /// # use serde_derive::Serialize; + /// use chrono::serde::ts_milliseconds_option::serialize as to_milli_tsopt; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_milli_tsopt")] + /// time: Option> + /// } + /// + /// let my_s = S { + /// time: Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_milli_opt(02, 04, 59, 918).unwrap().and_local_timezone(Utc).unwrap()), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(opt: &Option>, serializer: S) -> Result + where + S: ser::Serializer, + { + match *opt { + Some(ref dt) => serializer.serialize_some(&dt.timestamp_millis()), + None => serializer.serialize_none(), + } + } + + /// Deserialize a `DateTime` from a millisecond timestamp or none + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{TimeZone, DateTime, Utc}; + /// # use serde_derive::Deserialize; + /// use chrono::serde::ts_milliseconds_option::deserialize as from_milli_tsopt; + /// + /// #[derive(Deserialize, PartialEq, Debug)] + /// #[serde(untagged)] + /// enum E { + /// V(T), + /// } + /// + /// #[derive(Deserialize, PartialEq, Debug)] + /// struct S { + /// #[serde(default, deserialize_with = "from_milli_tsopt")] + /// time: Option> + /// } + /// + /// let my_s: E = serde_json::from_str(r#"{ "time": 1526522699918 }"#)?; + /// assert_eq!(my_s, E::V(S { time: Some(Utc.timestamp(1526522699, 918000000)) })); + /// let s: E = serde_json::from_str(r#"{ "time": null }"#)?; + /// assert_eq!(s, E::V(S { time: None })); + /// let t: E = serde_json::from_str(r#"{}"#)?; + /// assert_eq!(t, E::V(S { time: None })); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result>, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_option(OptionMilliSecondsTimestampVisitor) + .map(|opt| opt.map(|dt| dt.with_timezone(&Utc))) + } + + struct OptionMilliSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for OptionMilliSecondsTimestampVisitor { + type Value = Option>; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in milliseconds or none") + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_some(self, d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(MilliSecondsTimestampVisitor).map(Some) + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_none(self) -> Result + where + E: de::Error, + { + Ok(None) + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_unit(self) -> Result + where + E: de::Error, + { + Ok(None) + } + } +} + +/// Ser/de to/from timestamps in seconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{TimeZone, DateTime, Utc}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::serde::ts_seconds; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_seconds")] +/// time: DateTime +/// } +/// +/// let time = Utc.with_ymd_and_hms(2015, 5, 15, 10, 0, 0).unwrap(); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1431684000}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_seconds { + use core::fmt; + use serde::{de, ser}; + + use super::{serde_from, SecondsTimestampVisitor}; + use crate::offset::TimeZone; + use crate::{DateTime, Utc}; + + /// Serialize a UTC datetime into an integer number of seconds since the epoch + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{TimeZone, DateTime, Utc}; + /// # use serde_derive::Serialize; + /// use chrono::serde::ts_seconds::serialize as to_ts; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_ts")] + /// time: DateTime + /// } + /// + /// let my_s = S { + /// time: Utc.with_ymd_and_hms(2015, 5, 15, 10, 0, 0).unwrap(), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1431684000}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(dt: &DateTime, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.serialize_i64(dt.timestamp()) + } + + /// Deserialize a `DateTime` from a seconds timestamp + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{DateTime, Utc}; + /// # use serde_derive::Deserialize; + /// use chrono::serde::ts_seconds::deserialize as from_ts; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_ts")] + /// time: DateTime + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1431684000 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(SecondsTimestampVisitor) + } + + impl<'de> de::Visitor<'de> for SecondsTimestampVisitor { + type Value = DateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in seconds") + } + + /// Deserialize a timestamp in seconds since the epoch + fn visit_i64(self, value: i64) -> Result + where + E: de::Error, + { + serde_from(Utc.timestamp_opt(value, 0), &value) + } + + /// Deserialize a timestamp in seconds since the epoch + fn visit_u64(self, value: u64) -> Result + where + E: de::Error, + { + serde_from(Utc.timestamp_opt(value as i64, 0), &value) + } + } +} + +/// Ser/de to/from optional timestamps in seconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{TimeZone, DateTime, Utc}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::serde::ts_seconds_option; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_seconds_option")] +/// time: Option> +/// } +/// +/// let time = Some(Utc.with_ymd_and_hms(2015, 5, 15, 10, 0, 0).unwrap()); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1431684000}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_seconds_option { + use core::fmt; + use serde::{de, ser}; + + use super::SecondsTimestampVisitor; + use crate::{DateTime, Utc}; + + /// Serialize a UTC datetime into an integer number of seconds since the epoch or none + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{TimeZone, DateTime, Utc}; + /// # use serde_derive::Serialize; + /// use chrono::serde::ts_seconds_option::serialize as to_tsopt; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_tsopt")] + /// time: Option> + /// } + /// + /// let my_s = S { + /// time: Some(Utc.with_ymd_and_hms(2015, 5, 15, 10, 0, 0).unwrap()), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1431684000}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(opt: &Option>, serializer: S) -> Result + where + S: ser::Serializer, + { + match *opt { + Some(ref dt) => serializer.serialize_some(&dt.timestamp()), + None => serializer.serialize_none(), + } + } + + /// Deserialize a `DateTime` from a seconds timestamp or none + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{DateTime, Utc}; + /// # use serde_derive::Deserialize; + /// use chrono::serde::ts_seconds_option::deserialize as from_tsopt; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_tsopt")] + /// time: Option> + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1431684000 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result>, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_option(OptionSecondsTimestampVisitor) + } + + struct OptionSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for OptionSecondsTimestampVisitor { + type Value = Option>; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in seconds or none") + } + + /// Deserialize a timestamp in seconds since the epoch + fn visit_some(self, d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(SecondsTimestampVisitor).map(Some) + } + + /// Deserialize a timestamp in seconds since the epoch + fn visit_none(self) -> Result + where + E: de::Error, + { + Ok(None) + } + + /// Deserialize a timestamp in seconds since the epoch + fn visit_unit(self) -> Result + where + E: de::Error, + { + Ok(None) + } + } +} + +#[test] +fn test_serde_serialize() { + super::test_encodable_json(serde_json::to_string, serde_json::to_string); +} + +#[cfg(feature = "clock")] +#[test] +fn test_serde_deserialize() { + super::test_decodable_json( + |input| serde_json::from_str(input), + |input| serde_json::from_str(input), + |input| serde_json::from_str(input), + ); +} + +#[test] +fn test_serde_bincode() { + // Bincode is relevant to test separately from JSON because + // it is not self-describing. + use bincode::{deserialize, serialize}; + + let dt = Utc.with_ymd_and_hms(2014, 7, 24, 12, 34, 6).unwrap(); + let encoded = serialize(&dt).unwrap(); + let decoded: DateTime = deserialize(&encoded).unwrap(); + assert_eq!(dt, decoded); + assert_eq!(dt.offset(), decoded.offset()); +} diff --git a/javascript-engine/external/chrono/src/datetime/tests.rs b/javascript-engine/external/chrono/src/datetime/tests.rs new file mode 100644 index 0000000..ebd32ca --- /dev/null +++ b/javascript-engine/external/chrono/src/datetime/tests.rs @@ -0,0 +1,952 @@ +use std::time::{SystemTime, UNIX_EPOCH}; + +use super::DateTime; +use crate::naive::{NaiveDate, NaiveTime}; +#[cfg(feature = "clock")] +use crate::offset::Local; +use crate::offset::{FixedOffset, TimeZone, Utc}; +use crate::oldtime::Duration; +#[cfg(feature = "clock")] +use crate::Datelike; +use crate::{Days, LocalResult, Months, NaiveDateTime}; + +#[derive(Clone)] +struct DstTester; + +impl DstTester { + fn winter_offset() -> FixedOffset { + FixedOffset::east_opt(8 * 60 * 60).unwrap() + } + fn summer_offset() -> FixedOffset { + FixedOffset::east_opt(9 * 60 * 60).unwrap() + } + + const TO_WINTER_MONTH_DAY: (u32, u32) = (4, 15); + const TO_SUMMER_MONTH_DAY: (u32, u32) = (9, 15); + + fn transition_start_local() -> NaiveTime { + NaiveTime::from_hms_opt(2, 0, 0).unwrap() + } +} + +impl TimeZone for DstTester { + type Offset = FixedOffset; + + fn from_offset(_: &Self::Offset) -> Self { + DstTester + } + + fn offset_from_local_date(&self, _: &NaiveDate) -> crate::LocalResult { + unimplemented!() + } + + fn offset_from_local_datetime( + &self, + local: &NaiveDateTime, + ) -> crate::LocalResult { + let local_to_winter_transition_start = NaiveDate::from_ymd_opt( + local.year(), + DstTester::TO_WINTER_MONTH_DAY.0, + DstTester::TO_WINTER_MONTH_DAY.1, + ) + .unwrap() + .and_time(DstTester::transition_start_local()); + + let local_to_winter_transition_end = NaiveDate::from_ymd_opt( + local.year(), + DstTester::TO_WINTER_MONTH_DAY.0, + DstTester::TO_WINTER_MONTH_DAY.1, + ) + .unwrap() + .and_time(DstTester::transition_start_local() - Duration::hours(1)); + + let local_to_summer_transition_start = NaiveDate::from_ymd_opt( + local.year(), + DstTester::TO_SUMMER_MONTH_DAY.0, + DstTester::TO_SUMMER_MONTH_DAY.1, + ) + .unwrap() + .and_time(DstTester::transition_start_local()); + + let local_to_summer_transition_end = NaiveDate::from_ymd_opt( + local.year(), + DstTester::TO_SUMMER_MONTH_DAY.0, + DstTester::TO_SUMMER_MONTH_DAY.1, + ) + .unwrap() + .and_time(DstTester::transition_start_local() + Duration::hours(1)); + + if *local < local_to_winter_transition_end || *local >= local_to_summer_transition_end { + LocalResult::Single(DstTester::summer_offset()) + } else if *local >= local_to_winter_transition_start + && *local < local_to_summer_transition_start + { + LocalResult::Single(DstTester::winter_offset()) + } else if *local >= local_to_winter_transition_end + && *local < local_to_winter_transition_start + { + LocalResult::Ambiguous(DstTester::winter_offset(), DstTester::summer_offset()) + } else if *local >= local_to_summer_transition_start + && *local < local_to_summer_transition_end + { + LocalResult::None + } else { + panic!("Unexpected local time {}", local) + } + } + + fn offset_from_utc_date(&self, _: &NaiveDate) -> Self::Offset { + unimplemented!() + } + + fn offset_from_utc_datetime(&self, utc: &NaiveDateTime) -> Self::Offset { + let utc_to_winter_transition = NaiveDate::from_ymd_opt( + utc.year(), + DstTester::TO_WINTER_MONTH_DAY.0, + DstTester::TO_WINTER_MONTH_DAY.1, + ) + .unwrap() + .and_time(DstTester::transition_start_local()) + - DstTester::summer_offset(); + + let utc_to_summer_transition = NaiveDate::from_ymd_opt( + utc.year(), + DstTester::TO_SUMMER_MONTH_DAY.0, + DstTester::TO_SUMMER_MONTH_DAY.1, + ) + .unwrap() + .and_time(DstTester::transition_start_local()) + - DstTester::winter_offset(); + + if *utc < utc_to_winter_transition || *utc >= utc_to_summer_transition { + DstTester::summer_offset() + } else if *utc >= utc_to_winter_transition && *utc < utc_to_summer_transition { + DstTester::winter_offset() + } else { + panic!("Unexpected utc time {}", utc) + } + } +} + +#[test] +fn test_datetime_add_days() { + let est = FixedOffset::west_opt(5 * 60 * 60).unwrap(); + let kst = FixedOffset::east_opt(9 * 60 * 60).unwrap(); + + assert_eq!( + format!("{}", est.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() + Days::new(5)), + "2014-05-11 07:08:09 -05:00" + ); + assert_eq!( + format!("{}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() + Days::new(5)), + "2014-05-11 07:08:09 +09:00" + ); + + assert_eq!( + format!("{}", est.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() + Days::new(35)), + "2014-06-10 07:08:09 -05:00" + ); + assert_eq!( + format!("{}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() + Days::new(35)), + "2014-06-10 07:08:09 +09:00" + ); + + assert_eq!( + format!("{}", DstTester.with_ymd_and_hms(2014, 4, 6, 7, 8, 9).unwrap() + Days::new(5)), + "2014-04-11 07:08:09 +09:00" + ); + assert_eq!( + format!("{}", DstTester.with_ymd_and_hms(2014, 4, 6, 7, 8, 9).unwrap() + Days::new(10)), + "2014-04-16 07:08:09 +08:00" + ); + + assert_eq!( + format!("{}", DstTester.with_ymd_and_hms(2014, 9, 6, 7, 8, 9).unwrap() + Days::new(5)), + "2014-09-11 07:08:09 +08:00" + ); + assert_eq!( + format!("{}", DstTester.with_ymd_and_hms(2014, 9, 6, 7, 8, 9).unwrap() + Days::new(10)), + "2014-09-16 07:08:09 +09:00" + ); +} + +#[test] +fn test_datetime_sub_days() { + let est = FixedOffset::west_opt(5 * 60 * 60).unwrap(); + let kst = FixedOffset::east_opt(9 * 60 * 60).unwrap(); + + assert_eq!( + format!("{}", est.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() - Days::new(5)), + "2014-05-01 07:08:09 -05:00" + ); + assert_eq!( + format!("{}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() - Days::new(5)), + "2014-05-01 07:08:09 +09:00" + ); + + assert_eq!( + format!("{}", est.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() - Days::new(35)), + "2014-04-01 07:08:09 -05:00" + ); + assert_eq!( + format!("{}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() - Days::new(35)), + "2014-04-01 07:08:09 +09:00" + ); +} + +#[test] +fn test_datetime_add_months() { + let est = FixedOffset::west_opt(5 * 60 * 60).unwrap(); + let kst = FixedOffset::east_opt(9 * 60 * 60).unwrap(); + + assert_eq!( + format!("{}", est.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() + Months::new(1)), + "2014-06-06 07:08:09 -05:00" + ); + assert_eq!( + format!("{}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() + Months::new(1)), + "2014-06-06 07:08:09 +09:00" + ); + + assert_eq!( + format!("{}", est.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() + Months::new(5)), + "2014-10-06 07:08:09 -05:00" + ); + assert_eq!( + format!("{}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() + Months::new(5)), + "2014-10-06 07:08:09 +09:00" + ); +} + +#[test] +fn test_datetime_sub_months() { + let est = FixedOffset::west_opt(5 * 60 * 60).unwrap(); + let kst = FixedOffset::east_opt(9 * 60 * 60).unwrap(); + + assert_eq!( + format!("{}", est.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() - Months::new(1)), + "2014-04-06 07:08:09 -05:00" + ); + assert_eq!( + format!("{}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() - Months::new(1)), + "2014-04-06 07:08:09 +09:00" + ); + + assert_eq!( + format!("{}", est.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() - Months::new(5)), + "2013-12-06 07:08:09 -05:00" + ); + assert_eq!( + format!("{}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap() - Months::new(5)), + "2013-12-06 07:08:09 +09:00" + ); +} + +#[test] +fn test_datetime_offset() { + let est = FixedOffset::west_opt(5 * 60 * 60).unwrap(); + let edt = FixedOffset::west_opt(4 * 60 * 60).unwrap(); + let kst = FixedOffset::east_opt(9 * 60 * 60).unwrap(); + + assert_eq!( + format!("{}", Utc.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap()), + "2014-05-06 07:08:09 UTC" + ); + assert_eq!( + format!("{}", edt.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap()), + "2014-05-06 07:08:09 -04:00" + ); + assert_eq!( + format!("{}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap()), + "2014-05-06 07:08:09 +09:00" + ); + assert_eq!( + format!("{:?}", Utc.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap()), + "2014-05-06T07:08:09Z" + ); + assert_eq!( + format!("{:?}", edt.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap()), + "2014-05-06T07:08:09-04:00" + ); + assert_eq!( + format!("{:?}", kst.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap()), + "2014-05-06T07:08:09+09:00" + ); + + // edge cases + assert_eq!( + format!("{:?}", Utc.with_ymd_and_hms(2014, 5, 6, 0, 0, 0).unwrap()), + "2014-05-06T00:00:00Z" + ); + assert_eq!( + format!("{:?}", edt.with_ymd_and_hms(2014, 5, 6, 0, 0, 0).unwrap()), + "2014-05-06T00:00:00-04:00" + ); + assert_eq!( + format!("{:?}", kst.with_ymd_and_hms(2014, 5, 6, 0, 0, 0).unwrap()), + "2014-05-06T00:00:00+09:00" + ); + assert_eq!( + format!("{:?}", Utc.with_ymd_and_hms(2014, 5, 6, 23, 59, 59).unwrap()), + "2014-05-06T23:59:59Z" + ); + assert_eq!( + format!("{:?}", edt.with_ymd_and_hms(2014, 5, 6, 23, 59, 59).unwrap()), + "2014-05-06T23:59:59-04:00" + ); + assert_eq!( + format!("{:?}", kst.with_ymd_and_hms(2014, 5, 6, 23, 59, 59).unwrap()), + "2014-05-06T23:59:59+09:00" + ); + + let dt = Utc.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap(); + assert_eq!(dt, edt.with_ymd_and_hms(2014, 5, 6, 3, 8, 9).unwrap()); + assert_eq!( + dt + Duration::seconds(3600 + 60 + 1), + Utc.with_ymd_and_hms(2014, 5, 6, 8, 9, 10).unwrap() + ); + assert_eq!( + dt.signed_duration_since(edt.with_ymd_and_hms(2014, 5, 6, 10, 11, 12).unwrap()), + Duration::seconds(-7 * 3600 - 3 * 60 - 3) + ); + + assert_eq!(*Utc.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap().offset(), Utc); + assert_eq!(*edt.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap().offset(), edt); + assert!(*edt.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap().offset() != est); +} + +#[test] +fn test_datetime_date_and_time() { + let tz = FixedOffset::east_opt(5 * 60 * 60).unwrap(); + let d = tz.with_ymd_and_hms(2014, 5, 6, 7, 8, 9).unwrap(); + assert_eq!(d.time(), NaiveTime::from_hms_opt(7, 8, 9).unwrap()); + assert_eq!(d.date_naive(), NaiveDate::from_ymd_opt(2014, 5, 6).unwrap()); + + let tz = FixedOffset::east_opt(4 * 60 * 60).unwrap(); + let d = tz.with_ymd_and_hms(2016, 5, 4, 3, 2, 1).unwrap(); + assert_eq!(d.time(), NaiveTime::from_hms_opt(3, 2, 1).unwrap()); + assert_eq!(d.date_naive(), NaiveDate::from_ymd_opt(2016, 5, 4).unwrap()); + + let tz = FixedOffset::west_opt(13 * 60 * 60).unwrap(); + let d = tz.with_ymd_and_hms(2017, 8, 9, 12, 34, 56).unwrap(); + assert_eq!(d.time(), NaiveTime::from_hms_opt(12, 34, 56).unwrap()); + assert_eq!(d.date_naive(), NaiveDate::from_ymd_opt(2017, 8, 9).unwrap()); + + let utc_d = Utc.with_ymd_and_hms(2017, 8, 9, 12, 34, 56).unwrap(); + assert!(utc_d < d); +} + +#[test] +#[cfg(feature = "clock")] +fn test_datetime_with_timezone() { + let local_now = Local::now(); + let utc_now = local_now.with_timezone(&Utc); + let local_now2 = utc_now.with_timezone(&Local); + assert_eq!(local_now, local_now2); +} + +#[test] +fn test_datetime_rfc2822_and_rfc3339() { + let edt = FixedOffset::east_opt(5 * 60 * 60).unwrap(); + assert_eq!( + Utc.with_ymd_and_hms(2015, 2, 18, 23, 16, 9).unwrap().to_rfc2822(), + "Wed, 18 Feb 2015 23:16:09 +0000" + ); + assert_eq!( + Utc.with_ymd_and_hms(2015, 2, 18, 23, 16, 9).unwrap().to_rfc3339(), + "2015-02-18T23:16:09+00:00" + ); + assert_eq!( + edt.from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 16, 9, 150) + .unwrap() + ) + .unwrap() + .to_rfc2822(), + "Wed, 18 Feb 2015 23:16:09 +0500" + ); + assert_eq!( + edt.from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 16, 9, 150) + .unwrap() + ) + .unwrap() + .to_rfc3339(), + "2015-02-18T23:16:09.150+05:00" + ); + assert_eq!( + edt.from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_micro_opt(23, 59, 59, 1_234_567) + .unwrap() + ) + .unwrap() + .to_rfc2822(), + "Wed, 18 Feb 2015 23:59:60 +0500" + ); + assert_eq!( + edt.from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_micro_opt(23, 59, 59, 1_234_567) + .unwrap() + ) + .unwrap() + .to_rfc3339(), + "2015-02-18T23:59:60.234567+05:00" + ); + + assert_eq!( + DateTime::parse_from_rfc2822("Wed, 18 Feb 2015 23:16:09 +0000"), + Ok(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2015, 2, 18, 23, 16, 9).unwrap()) + ); + assert_eq!( + DateTime::parse_from_rfc2822("Wed, 18 Feb 2015 23:16:09 -0000"), + Ok(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2015, 2, 18, 23, 16, 9).unwrap()) + ); + assert_eq!( + DateTime::parse_from_rfc3339("2015-02-18T23:16:09Z"), + Ok(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2015, 2, 18, 23, 16, 9).unwrap()) + ); + assert_eq!( + DateTime::parse_from_rfc2822("Wed, 18 Feb 2015 23:59:60 +0500"), + Ok(edt + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 59, 59, 1_000) + .unwrap() + ) + .unwrap()) + ); + assert!(DateTime::parse_from_rfc2822("31 DEC 262143 23:59 -2359").is_err()); + assert_eq!( + DateTime::parse_from_rfc3339("2015-02-18T23:59:60.234567+05:00"), + Ok(edt + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_micro_opt(23, 59, 59, 1_234_567) + .unwrap() + ) + .unwrap()) + ); +} + +#[test] +fn test_rfc3339_opts() { + use crate::SecondsFormat::*; + let pst = FixedOffset::east_opt(8 * 60 * 60).unwrap(); + let dt = pst + .from_local_datetime( + &NaiveDate::from_ymd_opt(2018, 1, 11) + .unwrap() + .and_hms_nano_opt(10, 5, 13, 84_660_000) + .unwrap(), + ) + .unwrap(); + assert_eq!(dt.to_rfc3339_opts(Secs, false), "2018-01-11T10:05:13+08:00"); + assert_eq!(dt.to_rfc3339_opts(Secs, true), "2018-01-11T10:05:13+08:00"); + assert_eq!(dt.to_rfc3339_opts(Millis, false), "2018-01-11T10:05:13.084+08:00"); + assert_eq!(dt.to_rfc3339_opts(Micros, false), "2018-01-11T10:05:13.084660+08:00"); + assert_eq!(dt.to_rfc3339_opts(Nanos, false), "2018-01-11T10:05:13.084660000+08:00"); + assert_eq!(dt.to_rfc3339_opts(AutoSi, false), "2018-01-11T10:05:13.084660+08:00"); + + let ut = DateTime::::from_utc(dt.naive_utc(), Utc); + assert_eq!(ut.to_rfc3339_opts(Secs, false), "2018-01-11T02:05:13+00:00"); + assert_eq!(ut.to_rfc3339_opts(Secs, true), "2018-01-11T02:05:13Z"); + assert_eq!(ut.to_rfc3339_opts(Millis, false), "2018-01-11T02:05:13.084+00:00"); + assert_eq!(ut.to_rfc3339_opts(Millis, true), "2018-01-11T02:05:13.084Z"); + assert_eq!(ut.to_rfc3339_opts(Micros, true), "2018-01-11T02:05:13.084660Z"); + assert_eq!(ut.to_rfc3339_opts(Nanos, true), "2018-01-11T02:05:13.084660000Z"); + assert_eq!(ut.to_rfc3339_opts(AutoSi, true), "2018-01-11T02:05:13.084660Z"); +} + +#[test] +#[should_panic] +fn test_rfc3339_opts_nonexhaustive() { + use crate::SecondsFormat; + let dt = Utc.with_ymd_and_hms(1999, 10, 9, 1, 2, 3).unwrap(); + dt.to_rfc3339_opts(SecondsFormat::__NonExhaustive, true); +} + +#[test] +fn test_datetime_from_str() { + assert_eq!( + "2015-02-18T23:16:9.15Z".parse::>(), + Ok(FixedOffset::east_opt(0) + .unwrap() + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 16, 9, 150) + .unwrap() + ) + .unwrap()) + ); + assert_eq!( + "2015-02-18T23:16:9.15Z".parse::>(), + Ok(Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 16, 9, 150) + .unwrap() + ) + .unwrap()) + ); + assert_eq!( + "2015-02-18T23:16:9.15 UTC".parse::>(), + Ok(Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 16, 9, 150) + .unwrap() + ) + .unwrap()) + ); + assert_eq!( + "2015-02-18T23:16:9.15UTC".parse::>(), + Ok(Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 16, 9, 150) + .unwrap() + ) + .unwrap()) + ); + + assert_eq!( + "2015-2-18T23:16:9.15Z".parse::>(), + Ok(FixedOffset::east_opt(0) + .unwrap() + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 16, 9, 150) + .unwrap() + ) + .unwrap()) + ); + assert_eq!( + "2015-2-18T13:16:9.15-10:00".parse::>(), + Ok(FixedOffset::west_opt(10 * 3600) + .unwrap() + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(13, 16, 9, 150) + .unwrap() + ) + .unwrap()) + ); + assert!("2015-2-18T23:16:9.15".parse::>().is_err()); + + assert_eq!( + "2015-2-18T23:16:9.15Z".parse::>(), + Ok(Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 16, 9, 150) + .unwrap() + ) + .unwrap()) + ); + assert_eq!( + "2015-2-18T13:16:9.15-10:00".parse::>(), + Ok(Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2015, 2, 18) + .unwrap() + .and_hms_milli_opt(23, 16, 9, 150) + .unwrap() + ) + .unwrap()) + ); + assert!("2015-2-18T23:16:9.15".parse::>().is_err()); + + // no test for `DateTime`, we cannot verify that much. +} + +#[test] +fn test_datetime_parse_from_str() { + let ymdhms = |y, m, d, h, n, s, off| { + FixedOffset::east_opt(off).unwrap().with_ymd_and_hms(y, m, d, h, n, s).unwrap() + }; + assert_eq!( + DateTime::parse_from_str("2014-5-7T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), + Ok(ymdhms(2014, 5, 7, 12, 34, 56, 570 * 60)) + ); // ignore offset + assert!(DateTime::parse_from_str("20140507000000", "%Y%m%d%H%M%S").is_err()); // no offset + assert!(DateTime::parse_from_str("Fri, 09 Aug 2013 23:54:35 GMT", "%a, %d %b %Y %H:%M:%S GMT") + .is_err()); + assert_eq!( + Utc.datetime_from_str("Fri, 09 Aug 2013 23:54:35 GMT", "%a, %d %b %Y %H:%M:%S GMT"), + Ok(Utc.with_ymd_and_hms(2013, 8, 9, 23, 54, 35).unwrap()) + ); +} + +#[test] +fn test_to_string_round_trip() { + let dt = Utc.with_ymd_and_hms(2000, 1, 1, 0, 0, 0).unwrap(); + let _dt: DateTime = dt.to_string().parse().unwrap(); + + let ndt_fixed = dt.with_timezone(&FixedOffset::east_opt(3600).unwrap()); + let _dt: DateTime = ndt_fixed.to_string().parse().unwrap(); + + let ndt_fixed = dt.with_timezone(&FixedOffset::east_opt(0).unwrap()); + let _dt: DateTime = ndt_fixed.to_string().parse().unwrap(); +} + +#[test] +#[cfg(feature = "clock")] +fn test_to_string_round_trip_with_local() { + let ndt = Local::now(); + let _dt: DateTime = ndt.to_string().parse().unwrap(); +} + +#[test] +#[cfg(feature = "clock")] +fn test_datetime_format_with_local() { + // if we are not around the year boundary, local and UTC date should have the same year + let dt = Local::now().with_month(5).unwrap(); + assert_eq!(dt.format("%Y").to_string(), dt.with_timezone(&Utc).format("%Y").to_string()); +} + +#[test] +#[cfg(feature = "clock")] +fn test_datetime_is_copy() { + // UTC is known to be `Copy`. + let a = Utc::now(); + let b = a; + assert_eq!(a, b); +} + +#[test] +#[cfg(feature = "clock")] +fn test_datetime_is_send() { + use std::thread; + + // UTC is known to be `Send`. + let a = Utc::now(); + thread::spawn(move || { + let _ = a; + }) + .join() + .unwrap(); +} + +#[test] +fn test_subsecond_part() { + let datetime = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2014, 7, 8) + .unwrap() + .and_hms_nano_opt(9, 10, 11, 1234567) + .unwrap(), + ) + .unwrap(); + + assert_eq!(1, datetime.timestamp_subsec_millis()); + assert_eq!(1234, datetime.timestamp_subsec_micros()); + assert_eq!(1234567, datetime.timestamp_subsec_nanos()); +} + +#[test] +#[cfg(not(target_os = "windows"))] +fn test_from_system_time() { + use std::time::Duration; + + let epoch = Utc.with_ymd_and_hms(1970, 1, 1, 0, 0, 0).unwrap(); + let nanos = 999_999_999; + + // SystemTime -> DateTime + assert_eq!(DateTime::::from(UNIX_EPOCH), epoch); + assert_eq!( + DateTime::::from(UNIX_EPOCH + Duration::new(999_999_999, nanos)), + Utc.from_local_datetime( + &NaiveDate::from_ymd_opt(2001, 9, 9) + .unwrap() + .and_hms_nano_opt(1, 46, 39, nanos) + .unwrap() + ) + .unwrap() + ); + assert_eq!( + DateTime::::from(UNIX_EPOCH - Duration::new(999_999_999, nanos)), + Utc.from_local_datetime( + &NaiveDate::from_ymd_opt(1938, 4, 24).unwrap().and_hms_nano_opt(22, 13, 20, 1).unwrap() + ) + .unwrap() + ); + + // DateTime -> SystemTime + assert_eq!(SystemTime::from(epoch), UNIX_EPOCH); + assert_eq!( + SystemTime::from( + Utc.from_local_datetime( + &NaiveDate::from_ymd_opt(2001, 9, 9) + .unwrap() + .and_hms_nano_opt(1, 46, 39, nanos) + .unwrap() + ) + .unwrap() + ), + UNIX_EPOCH + Duration::new(999_999_999, nanos) + ); + assert_eq!( + SystemTime::from( + Utc.from_local_datetime( + &NaiveDate::from_ymd_opt(1938, 4, 24) + .unwrap() + .and_hms_nano_opt(22, 13, 20, 1) + .unwrap() + ) + .unwrap() + ), + UNIX_EPOCH - Duration::new(999_999_999, 999_999_999) + ); + + // DateTime -> SystemTime (via `with_timezone`) + #[cfg(feature = "clock")] + { + assert_eq!(SystemTime::from(epoch.with_timezone(&Local)), UNIX_EPOCH); + } + assert_eq!( + SystemTime::from(epoch.with_timezone(&FixedOffset::east_opt(32400).unwrap())), + UNIX_EPOCH + ); + assert_eq!( + SystemTime::from(epoch.with_timezone(&FixedOffset::west_opt(28800).unwrap())), + UNIX_EPOCH + ); +} + +#[test] +#[cfg(target_os = "windows")] +fn test_from_system_time() { + use std::time::Duration; + + let nanos = 999_999_000; + + let epoch = Utc.with_ymd_and_hms(1970, 1, 1, 0, 0, 0).unwrap(); + + // SystemTime -> DateTime + assert_eq!(DateTime::::from(UNIX_EPOCH), epoch); + assert_eq!( + DateTime::::from(UNIX_EPOCH + Duration::new(999_999_999, nanos)), + Utc.from_local_datetime( + &NaiveDate::from_ymd_opt(2001, 9, 9) + .unwrap() + .and_hms_nano_opt(1, 46, 39, nanos) + .unwrap() + ) + .unwrap() + ); + assert_eq!( + DateTime::::from(UNIX_EPOCH - Duration::new(999_999_999, nanos)), + Utc.from_local_datetime( + &NaiveDate::from_ymd_opt(1938, 4, 24) + .unwrap() + .and_hms_nano_opt(22, 13, 20, 1_000) + .unwrap() + ) + .unwrap() + ); + + // DateTime -> SystemTime + assert_eq!(SystemTime::from(epoch), UNIX_EPOCH); + assert_eq!( + SystemTime::from( + Utc.from_local_datetime( + &NaiveDate::from_ymd_opt(2001, 9, 9) + .unwrap() + .and_hms_nano_opt(1, 46, 39, nanos) + .unwrap() + ) + .unwrap() + ), + UNIX_EPOCH + Duration::new(999_999_999, nanos) + ); + assert_eq!( + SystemTime::from( + Utc.from_local_datetime( + &NaiveDate::from_ymd_opt(1938, 4, 24) + .unwrap() + .and_hms_nano_opt(22, 13, 20, 1_000) + .unwrap() + ) + .unwrap() + ), + UNIX_EPOCH - Duration::new(999_999_999, nanos) + ); + + // DateTime -> SystemTime (via `with_timezone`) + #[cfg(feature = "clock")] + { + assert_eq!(SystemTime::from(epoch.with_timezone(&Local)), UNIX_EPOCH); + } + assert_eq!( + SystemTime::from(epoch.with_timezone(&FixedOffset::east_opt(32400).unwrap())), + UNIX_EPOCH + ); + assert_eq!( + SystemTime::from(epoch.with_timezone(&FixedOffset::west_opt(28800).unwrap())), + UNIX_EPOCH + ); +} + +#[test] +fn test_datetime_format_alignment() { + let datetime = Utc.with_ymd_and_hms(2007, 1, 2, 0, 0, 0).unwrap(); + + // Item::Literal + let percent = datetime.format("%%"); + assert_eq!(" %", format!("{:>3}", percent)); + assert_eq!("% ", format!("{:<3}", percent)); + assert_eq!(" % ", format!("{:^3}", percent)); + + // Item::Numeric + let year = datetime.format("%Y"); + assert_eq!(" 2007", format!("{:>6}", year)); + assert_eq!("2007 ", format!("{:<6}", year)); + assert_eq!(" 2007 ", format!("{:^6}", year)); + + // Item::Fixed + let tz = datetime.format("%Z"); + assert_eq!(" UTC", format!("{:>5}", tz)); + assert_eq!("UTC ", format!("{:<5}", tz)); + assert_eq!(" UTC ", format!("{:^5}", tz)); + + // [Item::Numeric, Item::Space, Item::Literal, Item::Space, Item::Numeric] + let ymd = datetime.format("%Y %B %d"); + let ymd_formatted = "2007 January 02"; + assert_eq!(format!(" {}", ymd_formatted), format!("{:>17}", ymd)); + assert_eq!(format!("{} ", ymd_formatted), format!("{:<17}", ymd)); + assert_eq!(format!(" {} ", ymd_formatted), format!("{:^17}", ymd)); +} + +#[test] +fn test_datetime_from_local() { + // 2000-01-12T02:00:00Z + let naivedatetime_utc = + NaiveDate::from_ymd_opt(2000, 1, 12).unwrap().and_hms_opt(2, 0, 0).unwrap(); + let datetime_utc = DateTime::::from_utc(naivedatetime_utc, Utc); + + // 2000-01-12T10:00:00+8:00:00 + let timezone_east = FixedOffset::east_opt(8 * 60 * 60).unwrap(); + let naivedatetime_east = + NaiveDate::from_ymd_opt(2000, 1, 12).unwrap().and_hms_opt(10, 0, 0).unwrap(); + let datetime_east = DateTime::::from_local(naivedatetime_east, timezone_east); + + // 2000-01-11T19:00:00-7:00:00 + let timezone_west = FixedOffset::west_opt(7 * 60 * 60).unwrap(); + let naivedatetime_west = + NaiveDate::from_ymd_opt(2000, 1, 11).unwrap().and_hms_opt(19, 0, 0).unwrap(); + let datetime_west = DateTime::::from_local(naivedatetime_west, timezone_west); + + assert_eq!(datetime_east, datetime_utc.with_timezone(&timezone_east)); + assert_eq!(datetime_west, datetime_utc.with_timezone(&timezone_west)); +} + +#[test] +#[cfg(feature = "clock")] +fn test_years_elapsed() { + const WEEKS_PER_YEAR: f32 = 52.1775; + + // This is always at least one year because 1 year = 52.1775 weeks. + let one_year_ago = + Utc::now().date_naive() - Duration::weeks((WEEKS_PER_YEAR * 1.5).ceil() as i64); + // A bit more than 2 years. + let two_year_ago = + Utc::now().date_naive() - Duration::weeks((WEEKS_PER_YEAR * 2.5).ceil() as i64); + + assert_eq!(Utc::now().date_naive().years_since(one_year_ago), Some(1)); + assert_eq!(Utc::now().date_naive().years_since(two_year_ago), Some(2)); + + // If the given DateTime is later than now, the function will always return 0. + let future = Utc::now().date_naive() + Duration::weeks(12); + assert_eq!(Utc::now().date_naive().years_since(future), None); +} + +#[test] +fn test_datetime_add_assign() { + let naivedatetime = NaiveDate::from_ymd_opt(2000, 1, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(); + let datetime = DateTime::::from_utc(naivedatetime, Utc); + let mut datetime_add = datetime; + + datetime_add += Duration::seconds(60); + assert_eq!(datetime_add, datetime + Duration::seconds(60)); + + let timezone = FixedOffset::east_opt(60 * 60).unwrap(); + let datetime = datetime.with_timezone(&timezone); + let datetime_add = datetime_add.with_timezone(&timezone); + + assert_eq!(datetime_add, datetime + Duration::seconds(60)); + + let timezone = FixedOffset::west_opt(2 * 60 * 60).unwrap(); + let datetime = datetime.with_timezone(&timezone); + let datetime_add = datetime_add.with_timezone(&timezone); + + assert_eq!(datetime_add, datetime + Duration::seconds(60)); +} + +#[test] +#[cfg(feature = "clock")] +fn test_datetime_add_assign_local() { + let naivedatetime = NaiveDate::from_ymd_opt(2022, 1, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(); + + let datetime = Local.from_utc_datetime(&naivedatetime); + let mut datetime_add = Local.from_utc_datetime(&naivedatetime); + + // ensure we cross a DST transition + for i in 1..=365 { + datetime_add += Duration::days(1); + assert_eq!(datetime_add, datetime + Duration::days(i)) + } +} + +#[test] +fn test_datetime_sub_assign() { + let naivedatetime = NaiveDate::from_ymd_opt(2000, 1, 1).unwrap().and_hms_opt(12, 0, 0).unwrap(); + let datetime = DateTime::::from_utc(naivedatetime, Utc); + let mut datetime_sub = datetime; + + datetime_sub -= Duration::minutes(90); + assert_eq!(datetime_sub, datetime - Duration::minutes(90)); + + let timezone = FixedOffset::east_opt(60 * 60).unwrap(); + let datetime = datetime.with_timezone(&timezone); + let datetime_sub = datetime_sub.with_timezone(&timezone); + + assert_eq!(datetime_sub, datetime - Duration::minutes(90)); + + let timezone = FixedOffset::west_opt(2 * 60 * 60).unwrap(); + let datetime = datetime.with_timezone(&timezone); + let datetime_sub = datetime_sub.with_timezone(&timezone); + + assert_eq!(datetime_sub, datetime - Duration::minutes(90)); +} + +#[test] +#[cfg(feature = "clock")] +fn test_datetime_sub_assign_local() { + let naivedatetime = NaiveDate::from_ymd_opt(2022, 1, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(); + + let datetime = Local.from_utc_datetime(&naivedatetime); + let mut datetime_sub = Local.from_utc_datetime(&naivedatetime); + + // ensure we cross a DST transition + for i in 1..=365 { + datetime_sub -= Duration::days(1); + assert_eq!(datetime_sub, datetime - Duration::days(i)) + } +} diff --git a/javascript-engine/external/chrono/src/format/locales.rs b/javascript-engine/external/chrono/src/format/locales.rs new file mode 100644 index 0000000..f7b4bbd --- /dev/null +++ b/javascript-engine/external/chrono/src/format/locales.rs @@ -0,0 +1,33 @@ +use pure_rust_locales::{locale_match, Locale}; + +pub(crate) fn short_months(locale: Locale) -> &'static [&'static str] { + locale_match!(locale => LC_TIME::ABMON) +} + +pub(crate) fn long_months(locale: Locale) -> &'static [&'static str] { + locale_match!(locale => LC_TIME::MON) +} + +pub(crate) fn short_weekdays(locale: Locale) -> &'static [&'static str] { + locale_match!(locale => LC_TIME::ABDAY) +} + +pub(crate) fn long_weekdays(locale: Locale) -> &'static [&'static str] { + locale_match!(locale => LC_TIME::DAY) +} + +pub(crate) fn am_pm(locale: Locale) -> &'static [&'static str] { + locale_match!(locale => LC_TIME::AM_PM) +} + +pub(crate) fn d_fmt(locale: Locale) -> &'static str { + locale_match!(locale => LC_TIME::D_FMT) +} + +pub(crate) fn d_t_fmt(locale: Locale) -> &'static str { + locale_match!(locale => LC_TIME::D_T_FMT) +} + +pub(crate) fn t_fmt(locale: Locale) -> &'static str { + locale_match!(locale => LC_TIME::T_FMT) +} diff --git a/javascript-engine/external/chrono/src/format/mod.rs b/javascript-engine/external/chrono/src/format/mod.rs new file mode 100644 index 0000000..5e706db --- /dev/null +++ b/javascript-engine/external/chrono/src/format/mod.rs @@ -0,0 +1,1096 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! Formatting (and parsing) utilities for date and time. +//! +//! This module provides the common types and routines to implement, +//! for example, [`DateTime::format`](../struct.DateTime.html#method.format) or +//! [`DateTime::parse_from_str`](../struct.DateTime.html#method.parse_from_str) methods. +//! For most cases you should use these high-level interfaces. +//! +//! Internally the formatting and parsing shares the same abstract **formatting items**, +//! which are just an [`Iterator`](https://doc.rust-lang.org/std/iter/trait.Iterator.html) of +//! the [`Item`](./enum.Item.html) type. +//! They are generated from more readable **format strings**; +//! currently Chrono supports a built-in syntax closely resembling +//! C's `strftime` format. The available options can be found [here](./strftime/index.html). +//! +//! # Example +//! ```rust +//! # use std::error::Error; +//! use chrono::prelude::*; +//! +//! let date_time = Utc.with_ymd_and_hms(2020, 11, 10, 0, 1, 32).unwrap(); +//! +//! let formatted = format!("{}", date_time.format("%Y-%m-%d %H:%M:%S")); +//! assert_eq!(formatted, "2020-11-10 00:01:32"); +//! +//! let parsed = Utc.datetime_from_str(&formatted, "%Y-%m-%d %H:%M:%S")?; +//! assert_eq!(parsed, date_time); +//! # Ok::<(), chrono::ParseError>(()) +//! ``` + +#[cfg(feature = "alloc")] +extern crate alloc; + +#[cfg(feature = "alloc")] +use alloc::boxed::Box; +#[cfg(feature = "alloc")] +use alloc::string::{String, ToString}; +#[cfg(any(feature = "alloc", feature = "std", test))] +use core::borrow::Borrow; +use core::fmt; +use core::fmt::Write; +use core::str::FromStr; +#[cfg(any(feature = "std", test))] +use std::error::Error; + +#[cfg(any(feature = "alloc", feature = "std", test))] +use crate::naive::{NaiveDate, NaiveTime}; +#[cfg(any(feature = "alloc", feature = "std", test))] +use crate::offset::{FixedOffset, Offset}; +#[cfg(any(feature = "alloc", feature = "std", test))] +use crate::{Datelike, Timelike}; +use crate::{Month, ParseMonthError, ParseWeekdayError, Weekday}; + +#[cfg(feature = "unstable-locales")] +pub(crate) mod locales; + +pub use parse::parse; +pub use parsed::Parsed; +/// L10n locales. +#[cfg(feature = "unstable-locales")] +pub use pure_rust_locales::Locale; +pub use strftime::StrftimeItems; + +#[cfg(not(feature = "unstable-locales"))] +#[allow(dead_code)] +#[derive(Debug)] +struct Locale; + +/// An uninhabited type used for `InternalNumeric` and `InternalFixed` below. +#[derive(Clone, PartialEq, Eq)] +enum Void {} + +/// Padding characters for numeric items. +#[derive(Copy, Clone, PartialEq, Eq, Debug)] +pub enum Pad { + /// No padding. + None, + /// Zero (`0`) padding. + Zero, + /// Space padding. + Space, +} + +/// Numeric item types. +/// They have associated formatting width (FW) and parsing width (PW). +/// +/// The **formatting width** is the minimal width to be formatted. +/// If the number is too short, and the padding is not [`Pad::None`](./enum.Pad.html#variant.None), +/// then it is left-padded. +/// If the number is too long or (in some cases) negative, it is printed as is. +/// +/// The **parsing width** is the maximal width to be scanned. +/// The parser only tries to consume from one to given number of digits (greedily). +/// It also trims the preceding whitespace if any. +/// It cannot parse the negative number, so some date and time cannot be formatted then +/// parsed with the same formatting items. +#[derive(Clone, PartialEq, Eq, Debug)] +pub enum Numeric { + /// Full Gregorian year (FW=4, PW=∞). + /// May accept years before 1 BCE or after 9999 CE, given an initial sign. + Year, + /// Gregorian year divided by 100 (century number; FW=PW=2). Implies the non-negative year. + YearDiv100, + /// Gregorian year modulo 100 (FW=PW=2). Cannot be negative. + YearMod100, + /// Year in the ISO week date (FW=4, PW=∞). + /// May accept years before 1 BCE or after 9999 CE, given an initial sign. + IsoYear, + /// Year in the ISO week date, divided by 100 (FW=PW=2). Implies the non-negative year. + IsoYearDiv100, + /// Year in the ISO week date, modulo 100 (FW=PW=2). Cannot be negative. + IsoYearMod100, + /// Month (FW=PW=2). + Month, + /// Day of the month (FW=PW=2). + Day, + /// Week number, where the week 1 starts at the first Sunday of January (FW=PW=2). + WeekFromSun, + /// Week number, where the week 1 starts at the first Monday of January (FW=PW=2). + WeekFromMon, + /// Week number in the ISO week date (FW=PW=2). + IsoWeek, + /// Day of the week, where Sunday = 0 and Saturday = 6 (FW=PW=1). + NumDaysFromSun, + /// Day of the week, where Monday = 1 and Sunday = 7 (FW=PW=1). + WeekdayFromMon, + /// Day of the year (FW=PW=3). + Ordinal, + /// Hour number in the 24-hour clocks (FW=PW=2). + Hour, + /// Hour number in the 12-hour clocks (FW=PW=2). + Hour12, + /// The number of minutes since the last whole hour (FW=PW=2). + Minute, + /// The number of seconds since the last whole minute (FW=PW=2). + Second, + /// The number of nanoseconds since the last whole second (FW=PW=9). + /// Note that this is *not* left-aligned; + /// see also [`Fixed::Nanosecond`](./enum.Fixed.html#variant.Nanosecond). + Nanosecond, + /// The number of non-leap seconds since the midnight UTC on January 1, 1970 (FW=1, PW=∞). + /// For formatting, it assumes UTC upon the absence of time zone offset. + Timestamp, + + /// Internal uses only. + /// + /// This item exists so that one can add additional internal-only formatting + /// without breaking major compatibility (as enum variants cannot be selectively private). + Internal(InternalNumeric), +} + +/// An opaque type representing numeric item types for internal uses only. +pub struct InternalNumeric { + _dummy: Void, +} + +impl Clone for InternalNumeric { + fn clone(&self) -> Self { + match self._dummy {} + } +} + +impl PartialEq for InternalNumeric { + fn eq(&self, _other: &InternalNumeric) -> bool { + match self._dummy {} + } +} + +impl Eq for InternalNumeric {} + +impl fmt::Debug for InternalNumeric { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "") + } +} + +/// Fixed-format item types. +/// +/// They have their own rules of formatting and parsing. +/// Otherwise noted, they print in the specified cases but parse case-insensitively. +#[derive(Clone, PartialEq, Eq, Debug)] +pub enum Fixed { + /// Abbreviated month names. + /// + /// Prints a three-letter-long name in the title case, reads the same name in any case. + ShortMonthName, + /// Full month names. + /// + /// Prints a full name in the title case, reads either a short or full name in any case. + LongMonthName, + /// Abbreviated day of the week names. + /// + /// Prints a three-letter-long name in the title case, reads the same name in any case. + ShortWeekdayName, + /// Full day of the week names. + /// + /// Prints a full name in the title case, reads either a short or full name in any case. + LongWeekdayName, + /// AM/PM. + /// + /// Prints in lower case, reads in any case. + LowerAmPm, + /// AM/PM. + /// + /// Prints in upper case, reads in any case. + UpperAmPm, + /// An optional dot plus one or more digits for left-aligned nanoseconds. + /// May print nothing, 3, 6 or 9 digits according to the available accuracy. + /// See also [`Numeric::Nanosecond`](./enum.Numeric.html#variant.Nanosecond). + Nanosecond, + /// Same as [`Nanosecond`](#variant.Nanosecond) but the accuracy is fixed to 3. + Nanosecond3, + /// Same as [`Nanosecond`](#variant.Nanosecond) but the accuracy is fixed to 6. + Nanosecond6, + /// Same as [`Nanosecond`](#variant.Nanosecond) but the accuracy is fixed to 9. + Nanosecond9, + /// Timezone name. + /// + /// It does not support parsing, its use in the parser is an immediate failure. + TimezoneName, + /// Offset from the local time to UTC (`+09:00` or `-04:00` or `+00:00`). + /// + /// In the parser, the colon can be omitted and/or surrounded with any amount of whitespace. + /// The offset is limited from `-24:00` to `+24:00`, + /// which is the same as [`FixedOffset`](../offset/struct.FixedOffset.html)'s range. + TimezoneOffsetColon, + /// Offset from the local time to UTC with seconds (`+09:00:00` or `-04:00:00` or `+00:00:00`). + /// + /// In the parser, the colon can be omitted and/or surrounded with any amount of whitespace. + /// The offset is limited from `-24:00:00` to `+24:00:00`, + /// which is the same as [`FixedOffset`](../offset/struct.FixedOffset.html)'s range. + TimezoneOffsetDoubleColon, + /// Offset from the local time to UTC without minutes (`+09` or `-04` or `+00`). + /// + /// In the parser, the colon can be omitted and/or surrounded with any amount of whitespace. + /// The offset is limited from `-24` to `+24`, + /// which is the same as [`FixedOffset`](../offset/struct.FixedOffset.html)'s range. + TimezoneOffsetTripleColon, + /// Offset from the local time to UTC (`+09:00` or `-04:00` or `Z`). + /// + /// In the parser, the colon can be omitted and/or surrounded with any amount of whitespace, + /// and `Z` can be either in upper case or in lower case. + /// The offset is limited from `-24:00` to `+24:00`, + /// which is the same as [`FixedOffset`](../offset/struct.FixedOffset.html)'s range. + TimezoneOffsetColonZ, + /// Same as [`TimezoneOffsetColon`](#variant.TimezoneOffsetColon) but prints no colon. + /// Parsing allows an optional colon. + TimezoneOffset, + /// Same as [`TimezoneOffsetColonZ`](#variant.TimezoneOffsetColonZ) but prints no colon. + /// Parsing allows an optional colon. + TimezoneOffsetZ, + /// RFC 2822 date and time syntax. Commonly used for email and MIME date and time. + RFC2822, + /// RFC 3339 & ISO 8601 date and time syntax. + RFC3339, + + /// Internal uses only. + /// + /// This item exists so that one can add additional internal-only formatting + /// without breaking major compatibility (as enum variants cannot be selectively private). + Internal(InternalFixed), +} + +/// An opaque type representing fixed-format item types for internal uses only. +#[derive(Debug, Clone, PartialEq, Eq)] +pub struct InternalFixed { + val: InternalInternal, +} + +#[derive(Debug, Clone, PartialEq, Eq)] +enum InternalInternal { + /// Same as [`TimezoneOffsetColonZ`](#variant.TimezoneOffsetColonZ), but + /// allows missing minutes (per [ISO 8601][iso8601]). + /// + /// # Panics + /// + /// If you try to use this for printing. + /// + /// [iso8601]: https://en.wikipedia.org/wiki/ISO_8601#Time_offsets_from_UTC + TimezoneOffsetPermissive, + /// Same as [`Nanosecond`](#variant.Nanosecond) but the accuracy is fixed to 3 and there is no leading dot. + Nanosecond3NoDot, + /// Same as [`Nanosecond`](#variant.Nanosecond) but the accuracy is fixed to 6 and there is no leading dot. + Nanosecond6NoDot, + /// Same as [`Nanosecond`](#variant.Nanosecond) but the accuracy is fixed to 9 and there is no leading dot. + Nanosecond9NoDot, +} + +#[cfg(any(feature = "alloc", feature = "std", test))] +#[derive(Debug, Clone, PartialEq, Eq)] +enum Colons { + None, + Single, + Double, + Triple, +} + +/// A single formatting item. This is used for both formatting and parsing. +#[derive(Clone, PartialEq, Eq, Debug)] +pub enum Item<'a> { + /// A literally printed and parsed text. + Literal(&'a str), + /// Same as `Literal` but with the string owned by the item. + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + OwnedLiteral(Box), + /// Whitespace. Prints literally but reads zero or more whitespace. + Space(&'a str), + /// Same as `Space` but with the string owned by the item. + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + OwnedSpace(Box), + /// Numeric item. Can be optionally padded to the maximal length (if any) when formatting; + /// the parser simply ignores any padded whitespace and zeroes. + Numeric(Numeric, Pad), + /// Fixed-format item. + Fixed(Fixed), + /// Issues a formatting error. Used to signal an invalid format string. + Error, +} + +macro_rules! lit { + ($x:expr) => { + Item::Literal($x) + }; +} +macro_rules! sp { + ($x:expr) => { + Item::Space($x) + }; +} +macro_rules! num { + ($x:ident) => { + Item::Numeric(Numeric::$x, Pad::None) + }; +} +macro_rules! num0 { + ($x:ident) => { + Item::Numeric(Numeric::$x, Pad::Zero) + }; +} +macro_rules! nums { + ($x:ident) => { + Item::Numeric(Numeric::$x, Pad::Space) + }; +} +macro_rules! fix { + ($x:ident) => { + Item::Fixed(Fixed::$x) + }; +} +macro_rules! internal_fix { + ($x:ident) => { + Item::Fixed(Fixed::Internal(InternalFixed { val: InternalInternal::$x })) + }; +} + +/// An error from the `parse` function. +#[derive(Debug, Clone, PartialEq, Eq, Copy)] +pub struct ParseError(ParseErrorKind); + +impl ParseError { + /// The category of parse error + pub fn kind(&self) -> ParseErrorKind { + self.0 + } +} + +/// The category of parse error +#[derive(Debug, Clone, PartialEq, Eq, Copy)] +pub enum ParseErrorKind { + /// Given field is out of permitted range. + OutOfRange, + + /// There is no possible date and time value with given set of fields. + /// + /// This does not include the out-of-range conditions, which are trivially invalid. + /// It includes the case that there are one or more fields that are inconsistent to each other. + Impossible, + + /// Given set of fields is not enough to make a requested date and time value. + /// + /// Note that there *may* be a case that given fields constrain the possible values so much + /// that there is a unique possible value. Chrono only tries to be correct for + /// most useful sets of fields however, as such constraint solving can be expensive. + NotEnough, + + /// The input string has some invalid character sequence for given formatting items. + Invalid, + + /// The input string has been prematurely ended. + TooShort, + + /// All formatting items have been read but there is a remaining input. + TooLong, + + /// There was an error on the formatting string, or there were non-supported formating items. + BadFormat, + + // TODO: Change this to `#[non_exhaustive]` (on the enum) when MSRV is increased + #[doc(hidden)] + __Nonexhaustive, +} + +/// Same as `Result`. +pub type ParseResult = Result; + +impl fmt::Display for ParseError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match self.0 { + ParseErrorKind::OutOfRange => write!(f, "input is out of range"), + ParseErrorKind::Impossible => write!(f, "no possible date and time matching input"), + ParseErrorKind::NotEnough => write!(f, "input is not enough for unique date and time"), + ParseErrorKind::Invalid => write!(f, "input contains invalid characters"), + ParseErrorKind::TooShort => write!(f, "premature end of input"), + ParseErrorKind::TooLong => write!(f, "trailing input"), + ParseErrorKind::BadFormat => write!(f, "bad or unsupported format string"), + _ => unreachable!(), + } + } +} + +#[cfg(any(feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(feature = "std")))] +impl Error for ParseError { + #[allow(deprecated)] + fn description(&self) -> &str { + "parser error, see to_string() for details" + } +} + +// to be used in this module and submodules +const OUT_OF_RANGE: ParseError = ParseError(ParseErrorKind::OutOfRange); +const IMPOSSIBLE: ParseError = ParseError(ParseErrorKind::Impossible); +const NOT_ENOUGH: ParseError = ParseError(ParseErrorKind::NotEnough); +const INVALID: ParseError = ParseError(ParseErrorKind::Invalid); +const TOO_SHORT: ParseError = ParseError(ParseErrorKind::TooShort); +const TOO_LONG: ParseError = ParseError(ParseErrorKind::TooLong); +const BAD_FORMAT: ParseError = ParseError(ParseErrorKind::BadFormat); + +#[cfg(any(feature = "alloc", feature = "std", test))] +struct Locales { + short_months: &'static [&'static str], + long_months: &'static [&'static str], + short_weekdays: &'static [&'static str], + long_weekdays: &'static [&'static str], + am_pm: &'static [&'static str], +} + +#[cfg(any(feature = "alloc", feature = "std", test))] +impl Locales { + fn new(_locale: Option) -> Self { + #[cfg(feature = "unstable-locales")] + { + let locale = _locale.unwrap_or(Locale::POSIX); + Self { + short_months: locales::short_months(locale), + long_months: locales::long_months(locale), + short_weekdays: locales::short_weekdays(locale), + long_weekdays: locales::long_weekdays(locale), + am_pm: locales::am_pm(locale), + } + } + #[cfg(not(feature = "unstable-locales"))] + Self { + short_months: &[ + "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", + ], + long_months: &[ + "January", + "February", + "March", + "April", + "May", + "June", + "July", + "August", + "September", + "October", + "November", + "December", + ], + short_weekdays: &["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"], + long_weekdays: &[ + "Sunday", + "Monday", + "Tuesday", + "Wednesday", + "Thursday", + "Friday", + "Saturday", + ], + am_pm: &["AM", "PM"], + } + } +} + +/// Formats single formatting item +#[cfg(any(feature = "alloc", feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] +pub fn format_item<'a>( + w: &mut fmt::Formatter, + date: Option<&NaiveDate>, + time: Option<&NaiveTime>, + off: Option<&(String, FixedOffset)>, + item: &Item<'a>, +) -> fmt::Result { + let mut result = String::new(); + format_inner(&mut result, date, time, off, item, None)?; + w.pad(&result) +} + +#[cfg(any(feature = "alloc", feature = "std", test))] +fn format_inner<'a>( + result: &mut String, + date: Option<&NaiveDate>, + time: Option<&NaiveTime>, + off: Option<&(String, FixedOffset)>, + item: &Item<'a>, + locale: Option, +) -> fmt::Result { + let locale = Locales::new(locale); + + use num_integer::{div_floor, mod_floor}; + + match *item { + Item::Literal(s) | Item::Space(s) => result.push_str(s), + #[cfg(any(feature = "alloc", feature = "std", test))] + Item::OwnedLiteral(ref s) | Item::OwnedSpace(ref s) => result.push_str(s), + + Item::Numeric(ref spec, ref pad) => { + use self::Numeric::*; + + let week_from_sun = |d: &NaiveDate| { + (d.ordinal() as i32 - d.weekday().num_days_from_sunday() as i32 + 7) / 7 + }; + let week_from_mon = |d: &NaiveDate| { + (d.ordinal() as i32 - d.weekday().num_days_from_monday() as i32 + 7) / 7 + }; + + let (width, v) = match *spec { + Year => (4, date.map(|d| i64::from(d.year()))), + YearDiv100 => (2, date.map(|d| div_floor(i64::from(d.year()), 100))), + YearMod100 => (2, date.map(|d| mod_floor(i64::from(d.year()), 100))), + IsoYear => (4, date.map(|d| i64::from(d.iso_week().year()))), + IsoYearDiv100 => (2, date.map(|d| div_floor(i64::from(d.iso_week().year()), 100))), + IsoYearMod100 => (2, date.map(|d| mod_floor(i64::from(d.iso_week().year()), 100))), + Month => (2, date.map(|d| i64::from(d.month()))), + Day => (2, date.map(|d| i64::from(d.day()))), + WeekFromSun => (2, date.map(|d| i64::from(week_from_sun(d)))), + WeekFromMon => (2, date.map(|d| i64::from(week_from_mon(d)))), + IsoWeek => (2, date.map(|d| i64::from(d.iso_week().week()))), + NumDaysFromSun => (1, date.map(|d| i64::from(d.weekday().num_days_from_sunday()))), + WeekdayFromMon => (1, date.map(|d| i64::from(d.weekday().number_from_monday()))), + Ordinal => (3, date.map(|d| i64::from(d.ordinal()))), + Hour => (2, time.map(|t| i64::from(t.hour()))), + Hour12 => (2, time.map(|t| i64::from(t.hour12().1))), + Minute => (2, time.map(|t| i64::from(t.minute()))), + Second => (2, time.map(|t| i64::from(t.second() + t.nanosecond() / 1_000_000_000))), + Nanosecond => (9, time.map(|t| i64::from(t.nanosecond() % 1_000_000_000))), + Timestamp => ( + 1, + match (date, time, off) { + (Some(d), Some(t), None) => Some(d.and_time(*t).timestamp()), + (Some(d), Some(t), Some(&(_, off))) => { + Some((d.and_time(*t) - off).timestamp()) + } + (_, _, _) => None, + }, + ), + + // for the future expansion + Internal(ref int) => match int._dummy {}, + }; + + if let Some(v) = v { + if (spec == &Year || spec == &IsoYear) && !(0..10_000).contains(&v) { + // non-four-digit years require an explicit sign as per ISO 8601 + match *pad { + Pad::None => write!(result, "{:+}", v), + Pad::Zero => write!(result, "{:+01$}", v, width + 1), + Pad::Space => write!(result, "{:+1$}", v, width + 1), + } + } else { + match *pad { + Pad::None => write!(result, "{}", v), + Pad::Zero => write!(result, "{:01$}", v, width), + Pad::Space => write!(result, "{:1$}", v, width), + } + }? + } else { + return Err(fmt::Error); // insufficient arguments for given format + } + } + + Item::Fixed(ref spec) => { + use self::Fixed::*; + + let ret = + match *spec { + ShortMonthName => date.map(|d| { + result.push_str(locale.short_months[d.month0() as usize]); + Ok(()) + }), + LongMonthName => date.map(|d| { + result.push_str(locale.long_months[d.month0() as usize]); + Ok(()) + }), + ShortWeekdayName => date.map(|d| { + result.push_str( + locale.short_weekdays[d.weekday().num_days_from_sunday() as usize], + ); + Ok(()) + }), + LongWeekdayName => date.map(|d| { + result.push_str( + locale.long_weekdays[d.weekday().num_days_from_sunday() as usize], + ); + Ok(()) + }), + LowerAmPm => time.map(|t| { + let ampm = if t.hour12().0 { locale.am_pm[1] } else { locale.am_pm[0] }; + for char in ampm.chars() { + result.extend(char.to_lowercase()) + } + Ok(()) + }), + UpperAmPm => time.map(|t| { + result.push_str(if t.hour12().0 { + locale.am_pm[1] + } else { + locale.am_pm[0] + }); + Ok(()) + }), + Nanosecond => time.map(|t| { + let nano = t.nanosecond() % 1_000_000_000; + if nano == 0 { + Ok(()) + } else if nano % 1_000_000 == 0 { + write!(result, ".{:03}", nano / 1_000_000) + } else if nano % 1_000 == 0 { + write!(result, ".{:06}", nano / 1_000) + } else { + write!(result, ".{:09}", nano) + } + }), + Nanosecond3 => time.map(|t| { + let nano = t.nanosecond() % 1_000_000_000; + write!(result, ".{:03}", nano / 1_000_000) + }), + Nanosecond6 => time.map(|t| { + let nano = t.nanosecond() % 1_000_000_000; + write!(result, ".{:06}", nano / 1_000) + }), + Nanosecond9 => time.map(|t| { + let nano = t.nanosecond() % 1_000_000_000; + write!(result, ".{:09}", nano) + }), + Internal(InternalFixed { val: InternalInternal::Nanosecond3NoDot }) => time + .map(|t| { + let nano = t.nanosecond() % 1_000_000_000; + write!(result, "{:03}", nano / 1_000_000) + }), + Internal(InternalFixed { val: InternalInternal::Nanosecond6NoDot }) => time + .map(|t| { + let nano = t.nanosecond() % 1_000_000_000; + write!(result, "{:06}", nano / 1_000) + }), + Internal(InternalFixed { val: InternalInternal::Nanosecond9NoDot }) => time + .map(|t| { + let nano = t.nanosecond() % 1_000_000_000; + write!(result, "{:09}", nano) + }), + TimezoneName => off.map(|&(ref name, _)| { + result.push_str(name); + Ok(()) + }), + TimezoneOffsetColon => off + .map(|&(_, off)| write_local_minus_utc(result, off, false, Colons::Single)), + TimezoneOffsetDoubleColon => off + .map(|&(_, off)| write_local_minus_utc(result, off, false, Colons::Double)), + TimezoneOffsetTripleColon => off + .map(|&(_, off)| write_local_minus_utc(result, off, false, Colons::Triple)), + TimezoneOffsetColonZ => off + .map(|&(_, off)| write_local_minus_utc(result, off, true, Colons::Single)), + TimezoneOffset => { + off.map(|&(_, off)| write_local_minus_utc(result, off, false, Colons::None)) + } + TimezoneOffsetZ => { + off.map(|&(_, off)| write_local_minus_utc(result, off, true, Colons::None)) + } + Internal(InternalFixed { val: InternalInternal::TimezoneOffsetPermissive }) => { + panic!("Do not try to write %#z it is undefined") + } + RFC2822 => + // same as `%a, %d %b %Y %H:%M:%S %z` + { + if let (Some(d), Some(t), Some(&(_, off))) = (date, time, off) { + Some(write_rfc2822_inner(result, d, t, off, locale)) + } else { + None + } + } + RFC3339 => + // same as `%Y-%m-%dT%H:%M:%S%.f%:z` + { + if let (Some(d), Some(t), Some(&(_, off))) = (date, time, off) { + Some(write_rfc3339(result, crate::NaiveDateTime::new(*d, *t), off)) + } else { + None + } + } + }; + + match ret { + Some(ret) => ret?, + None => return Err(fmt::Error), // insufficient arguments for given format + } + } + + Item::Error => return Err(fmt::Error), + } + Ok(()) +} + +/// Prints an offset from UTC in the format of `+HHMM` or `+HH:MM`. +/// `Z` instead of `+00[:]00` is allowed when `allow_zulu` is true. +#[cfg(any(feature = "alloc", feature = "std", test))] +fn write_local_minus_utc( + result: &mut String, + off: FixedOffset, + allow_zulu: bool, + colon_type: Colons, +) -> fmt::Result { + let off = off.local_minus_utc(); + if allow_zulu && off == 0 { + result.push('Z'); + return Ok(()); + } + let (sign, off) = if off < 0 { ('-', -off) } else { ('+', off) }; + result.push(sign); + + write_hundreds(result, (off / 3600) as u8)?; + + match colon_type { + Colons::None => write_hundreds(result, (off / 60 % 60) as u8), + Colons::Single => { + result.push(':'); + write_hundreds(result, (off / 60 % 60) as u8) + } + Colons::Double => { + result.push(':'); + write_hundreds(result, (off / 60 % 60) as u8)?; + result.push(':'); + write_hundreds(result, (off % 60) as u8) + } + Colons::Triple => Ok(()), + } +} + +/// Writes the date, time and offset to the string. same as `%Y-%m-%dT%H:%M:%S%.f%:z` +#[cfg(any(feature = "alloc", feature = "std", test))] +pub(crate) fn write_rfc3339( + result: &mut String, + dt: crate::NaiveDateTime, + off: FixedOffset, +) -> fmt::Result { + // reuse `Debug` impls which already print ISO 8601 format. + // this is faster in this way. + write!(result, "{:?}", dt)?; + write_local_minus_utc(result, off, false, Colons::Single) +} + +#[cfg(any(feature = "alloc", feature = "std", test))] +/// write datetimes like `Tue, 1 Jul 2003 10:52:37 +0200`, same as `%a, %d %b %Y %H:%M:%S %z` +pub(crate) fn write_rfc2822( + result: &mut String, + dt: crate::NaiveDateTime, + off: FixedOffset, +) -> fmt::Result { + write_rfc2822_inner(result, &dt.date(), &dt.time(), off, Locales::new(None)) +} + +#[cfg(any(feature = "alloc", feature = "std", test))] +/// write datetimes like `Tue, 1 Jul 2003 10:52:37 +0200`, same as `%a, %d %b %Y %H:%M:%S %z` +fn write_rfc2822_inner( + result: &mut String, + d: &NaiveDate, + t: &NaiveTime, + off: FixedOffset, + locale: Locales, +) -> fmt::Result { + let year = d.year(); + // RFC2822 is only defined on years 0 through 9999 + if !(0..=9999).contains(&year) { + return Err(fmt::Error); + } + + result.push_str(locale.short_weekdays[d.weekday().num_days_from_sunday() as usize]); + result.push_str(", "); + write_hundreds(result, d.day() as u8)?; + result.push(' '); + result.push_str(locale.short_months[d.month0() as usize]); + result.push(' '); + write_hundreds(result, (year / 100) as u8)?; + write_hundreds(result, (year % 100) as u8)?; + result.push(' '); + write_hundreds(result, t.hour() as u8)?; + result.push(':'); + write_hundreds(result, t.minute() as u8)?; + result.push(':'); + let sec = t.second() + t.nanosecond() / 1_000_000_000; + write_hundreds(result, sec as u8)?; + result.push(' '); + write_local_minus_utc(result, off, false, Colons::None) +} + +/// Equivalent to `{:02}` formatting for n < 100. +pub(crate) fn write_hundreds(w: &mut impl Write, n: u8) -> fmt::Result { + if n >= 100 { + return Err(fmt::Error); + } + + let tens = b'0' + n / 10; + let ones = b'0' + n % 10; + w.write_char(tens as char)?; + w.write_char(ones as char) +} + +/// Tries to format given arguments with given formatting items. +/// Internally used by `DelayedFormat`. +#[cfg(any(feature = "alloc", feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] +pub fn format<'a, I, B>( + w: &mut fmt::Formatter, + date: Option<&NaiveDate>, + time: Option<&NaiveTime>, + off: Option<&(String, FixedOffset)>, + items: I, +) -> fmt::Result +where + I: Iterator + Clone, + B: Borrow>, +{ + let mut result = String::new(); + for item in items { + format_inner(&mut result, date, time, off, item.borrow(), None)?; + } + w.pad(&result) +} + +mod parsed; + +// due to the size of parsing routines, they are in separate modules. +mod parse; +mod scan; + +pub mod strftime; + +/// A *temporary* object which can be used as an argument to `format!` or others. +/// This is normally constructed via `format` methods of each date and time type. +#[cfg(any(feature = "alloc", feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] +#[derive(Debug)] +pub struct DelayedFormat { + /// The date view, if any. + date: Option, + /// The time view, if any. + time: Option, + /// The name and local-to-UTC difference for the offset (timezone), if any. + off: Option<(String, FixedOffset)>, + /// An iterator returning formatting items. + items: I, + /// Locale used for text. + // TODO: Only used with the locale feature. We should make this property + // only present when the feature is enabled. + #[cfg(feature = "unstable-locales")] + locale: Option, +} + +#[cfg(any(feature = "alloc", feature = "std", test))] +impl<'a, I: Iterator + Clone, B: Borrow>> DelayedFormat { + /// Makes a new `DelayedFormat` value out of local date and time. + pub fn new(date: Option, time: Option, items: I) -> DelayedFormat { + DelayedFormat { + date, + time, + off: None, + items, + #[cfg(feature = "unstable-locales")] + locale: None, + } + } + + /// Makes a new `DelayedFormat` value out of local date and time and UTC offset. + pub fn new_with_offset( + date: Option, + time: Option, + offset: &Off, + items: I, + ) -> DelayedFormat + where + Off: Offset + fmt::Display, + { + let name_and_diff = (offset.to_string(), offset.fix()); + DelayedFormat { + date, + time, + off: Some(name_and_diff), + items, + #[cfg(feature = "unstable-locales")] + locale: None, + } + } + + /// Makes a new `DelayedFormat` value out of local date and time and locale. + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + pub fn new_with_locale( + date: Option, + time: Option, + items: I, + locale: Locale, + ) -> DelayedFormat { + DelayedFormat { date, time, off: None, items, locale: Some(locale) } + } + + /// Makes a new `DelayedFormat` value out of local date and time, UTC offset and locale. + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + pub fn new_with_offset_and_locale( + date: Option, + time: Option, + offset: &Off, + items: I, + locale: Locale, + ) -> DelayedFormat + where + Off: Offset + fmt::Display, + { + let name_and_diff = (offset.to_string(), offset.fix()); + DelayedFormat { date, time, off: Some(name_and_diff), items, locale: Some(locale) } + } +} + +#[cfg(any(feature = "alloc", feature = "std", test))] +impl<'a, I: Iterator + Clone, B: Borrow>> fmt::Display for DelayedFormat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + #[cfg(feature = "unstable-locales")] + { + if let Some(locale) = self.locale { + return format_localized( + f, + self.date.as_ref(), + self.time.as_ref(), + self.off.as_ref(), + self.items.clone(), + locale, + ); + } + } + + format(f, self.date.as_ref(), self.time.as_ref(), self.off.as_ref(), self.items.clone()) + } +} + +// this implementation is here only because we need some private code from `scan` + +/// Parsing a `str` into a `Weekday` uses the format [`%W`](./format/strftime/index.html). +/// +/// # Example +/// +/// ``` +/// use chrono::Weekday; +/// +/// assert_eq!("Sunday".parse::(), Ok(Weekday::Sun)); +/// assert!("any day".parse::().is_err()); +/// ``` +/// +/// The parsing is case-insensitive. +/// +/// ``` +/// # use chrono::Weekday; +/// assert_eq!("mON".parse::(), Ok(Weekday::Mon)); +/// ``` +/// +/// Only the shortest form (e.g. `sun`) and the longest form (e.g. `sunday`) is accepted. +/// +/// ``` +/// # use chrono::Weekday; +/// assert!("thurs".parse::().is_err()); +/// ``` +impl FromStr for Weekday { + type Err = ParseWeekdayError; + + fn from_str(s: &str) -> Result { + if let Ok(("", w)) = scan::short_or_long_weekday(s) { + Ok(w) + } else { + Err(ParseWeekdayError { _dummy: () }) + } + } +} + +/// Formats single formatting item +#[cfg(feature = "unstable-locales")] +#[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] +pub fn format_item_localized<'a>( + w: &mut fmt::Formatter, + date: Option<&NaiveDate>, + time: Option<&NaiveTime>, + off: Option<&(String, FixedOffset)>, + item: &Item<'a>, + locale: Locale, +) -> fmt::Result { + let mut result = String::new(); + format_inner(&mut result, date, time, off, item, Some(locale))?; + w.pad(&result) +} + +/// Tries to format given arguments with given formatting items. +/// Internally used by `DelayedFormat`. +#[cfg(feature = "unstable-locales")] +#[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] +pub fn format_localized<'a, I, B>( + w: &mut fmt::Formatter, + date: Option<&NaiveDate>, + time: Option<&NaiveTime>, + off: Option<&(String, FixedOffset)>, + items: I, + locale: Locale, +) -> fmt::Result +where + I: Iterator + Clone, + B: Borrow>, +{ + let mut result = String::new(); + for item in items { + format_inner(&mut result, date, time, off, item.borrow(), Some(locale))?; + } + w.pad(&result) +} + +/// Parsing a `str` into a `Month` uses the format [`%W`](./format/strftime/index.html). +/// +/// # Example +/// +/// ``` +/// use chrono::Month; +/// +/// assert_eq!("January".parse::(), Ok(Month::January)); +/// assert!("any day".parse::().is_err()); +/// ``` +/// +/// The parsing is case-insensitive. +/// +/// ``` +/// # use chrono::Month; +/// assert_eq!("fEbruARy".parse::(), Ok(Month::February)); +/// ``` +/// +/// Only the shortest form (e.g. `jan`) and the longest form (e.g. `january`) is accepted. +/// +/// ``` +/// # use chrono::Month; +/// assert!("septem".parse::().is_err()); +/// assert!("Augustin".parse::().is_err()); +/// ``` +impl FromStr for Month { + type Err = ParseMonthError; + + fn from_str(s: &str) -> Result { + if let Ok(("", w)) = scan::short_or_long_month0(s) { + match w { + 0 => Ok(Month::January), + 1 => Ok(Month::February), + 2 => Ok(Month::March), + 3 => Ok(Month::April), + 4 => Ok(Month::May), + 5 => Ok(Month::June), + 6 => Ok(Month::July), + 7 => Ok(Month::August), + 8 => Ok(Month::September), + 9 => Ok(Month::October), + 10 => Ok(Month::November), + 11 => Ok(Month::December), + _ => Err(ParseMonthError { _dummy: () }), + } + } else { + Err(ParseMonthError { _dummy: () }) + } + } +} diff --git a/javascript-engine/external/chrono/src/format/parse.rs b/javascript-engine/external/chrono/src/format/parse.rs new file mode 100644 index 0000000..69204d2 --- /dev/null +++ b/javascript-engine/external/chrono/src/format/parse.rs @@ -0,0 +1,977 @@ +// This is a part of Chrono. +// Portions copyright (c) 2015, John Nagle. +// See README.md and LICENSE.txt for details. + +//! Date and time parsing routines. + +#![allow(deprecated)] + +use core::borrow::Borrow; +use core::str; +use core::usize; + +use super::scan; +use super::{Fixed, InternalFixed, InternalInternal, Item, Numeric, Pad, Parsed}; +use super::{ParseError, ParseErrorKind, ParseResult}; +use super::{BAD_FORMAT, INVALID, NOT_ENOUGH, OUT_OF_RANGE, TOO_LONG, TOO_SHORT}; +use crate::{DateTime, FixedOffset, Weekday}; + +fn set_weekday_with_num_days_from_sunday(p: &mut Parsed, v: i64) -> ParseResult<()> { + p.set_weekday(match v { + 0 => Weekday::Sun, + 1 => Weekday::Mon, + 2 => Weekday::Tue, + 3 => Weekday::Wed, + 4 => Weekday::Thu, + 5 => Weekday::Fri, + 6 => Weekday::Sat, + _ => return Err(OUT_OF_RANGE), + }) +} + +fn set_weekday_with_number_from_monday(p: &mut Parsed, v: i64) -> ParseResult<()> { + p.set_weekday(match v { + 1 => Weekday::Mon, + 2 => Weekday::Tue, + 3 => Weekday::Wed, + 4 => Weekday::Thu, + 5 => Weekday::Fri, + 6 => Weekday::Sat, + 7 => Weekday::Sun, + _ => return Err(OUT_OF_RANGE), + }) +} + +fn parse_rfc2822<'a>(parsed: &mut Parsed, mut s: &'a str) -> ParseResult<(&'a str, ())> { + macro_rules! try_consume { + ($e:expr) => {{ + let (s_, v) = $e?; + s = s_; + v + }}; + } + + // an adapted RFC 2822 syntax from Section 3.3 and 4.3: + // + // c-char = + // c-escape = "\" + // comment = "(" *(comment / c-char / c-escape) ")" *S + // date-time = [ day-of-week "," ] date 1*S time *S *comment + // day-of-week = *S day-name *S + // day-name = "Mon" / "Tue" / "Wed" / "Thu" / "Fri" / "Sat" / "Sun" + // date = day month year + // day = *S 1*2DIGIT *S + // month = 1*S month-name 1*S + // month-name = "Jan" / "Feb" / "Mar" / "Apr" / "May" / "Jun" / + // "Jul" / "Aug" / "Sep" / "Oct" / "Nov" / "Dec" + // year = *S 2*DIGIT *S + // time = time-of-day 1*S zone + // time-of-day = hour ":" minute [ ":" second ] + // hour = *S 2DIGIT *S + // minute = *S 2DIGIT *S + // second = *S 2DIGIT *S + // zone = ( "+" / "-" ) 4DIGIT / + // "UT" / "GMT" / ; same as +0000 + // "EST" / "CST" / "MST" / "PST" / ; same as -0500 to -0800 + // "EDT" / "CDT" / "MDT" / "PDT" / ; same as -0400 to -0700 + // 1*(%d65-90 / %d97-122) ; same as -0000 + // + // some notes: + // + // - quoted characters can be in any mixture of lower and upper cases. + // + // - we do not recognize a folding white space (FWS) or comment (CFWS). + // for our purposes, instead, we accept any sequence of Unicode + // white space characters (denoted here to `S`). For comments, we accept + // any text within parentheses while respecting escaped parentheses. + // Any actual RFC 2822 parser is expected to parse FWS and/or CFWS themselves + // and replace it with a single SP (`%x20`); this is legitimate. + // + // - two-digit year < 50 should be interpreted by adding 2000. + // two-digit year >= 50 or three-digit year should be interpreted + // by adding 1900. note that four-or-more-digit years less than 1000 + // are *never* affected by this rule. + // + // - mismatching day-of-week is always an error, which is consistent to + // Chrono's own rules. + // + // - zones can range from `-9959` to `+9959`, but `FixedOffset` does not + // support offsets larger than 24 hours. this is not *that* problematic + // since we do not directly go to a `DateTime` so one can recover + // the offset information from `Parsed` anyway. + + s = s.trim_left(); + + if let Ok((s_, weekday)) = scan::short_weekday(s) { + if !s_.starts_with(',') { + return Err(INVALID); + } + s = &s_[1..]; + parsed.set_weekday(weekday)?; + } + + s = s.trim_left(); + parsed.set_day(try_consume!(scan::number(s, 1, 2)))?; + s = scan::space(s)?; // mandatory + parsed.set_month(1 + i64::from(try_consume!(scan::short_month0(s))))?; + s = scan::space(s)?; // mandatory + + // distinguish two- and three-digit years from four-digit years + let prevlen = s.len(); + let mut year = try_consume!(scan::number(s, 2, usize::MAX)); + let yearlen = prevlen - s.len(); + match (yearlen, year) { + (2, 0..=49) => { + year += 2000; + } // 47 -> 2047, 05 -> 2005 + (2, 50..=99) => { + year += 1900; + } // 79 -> 1979 + (3, _) => { + year += 1900; + } // 112 -> 2012, 009 -> 1909 + (_, _) => {} // 1987 -> 1987, 0654 -> 0654 + } + parsed.set_year(year)?; + + s = scan::space(s)?; // mandatory + parsed.set_hour(try_consume!(scan::number(s, 2, 2)))?; + s = scan::char(s.trim_left(), b':')?.trim_left(); // *S ":" *S + parsed.set_minute(try_consume!(scan::number(s, 2, 2)))?; + if let Ok(s_) = scan::char(s.trim_left(), b':') { + // [ ":" *S 2DIGIT ] + parsed.set_second(try_consume!(scan::number(s_, 2, 2)))?; + } + + s = scan::space(s)?; // mandatory + if let Some(offset) = try_consume!(scan::timezone_offset_2822(s)) { + // only set the offset when it is definitely known (i.e. not `-0000`) + parsed.set_offset(i64::from(offset))?; + } + + // optional comments + while let Ok((s_out, ())) = scan::comment_2822(s) { + s = s_out; + } + + Ok((s, ())) +} + +fn parse_rfc3339<'a>(parsed: &mut Parsed, mut s: &'a str) -> ParseResult<(&'a str, ())> { + macro_rules! try_consume { + ($e:expr) => {{ + let (s_, v) = $e?; + s = s_; + v + }}; + } + + // an adapted RFC 3339 syntax from Section 5.6: + // + // date-fullyear = 4DIGIT + // date-month = 2DIGIT ; 01-12 + // date-mday = 2DIGIT ; 01-28, 01-29, 01-30, 01-31 based on month/year + // time-hour = 2DIGIT ; 00-23 + // time-minute = 2DIGIT ; 00-59 + // time-second = 2DIGIT ; 00-58, 00-59, 00-60 based on leap second rules + // time-secfrac = "." 1*DIGIT + // time-numoffset = ("+" / "-") time-hour ":" time-minute + // time-offset = "Z" / time-numoffset + // partial-time = time-hour ":" time-minute ":" time-second [time-secfrac] + // full-date = date-fullyear "-" date-month "-" date-mday + // full-time = partial-time time-offset + // date-time = full-date "T" full-time + // + // some notes: + // + // - quoted characters can be in any mixture of lower and upper cases. + // + // - it may accept any number of fractional digits for seconds. + // for Chrono, this means that we should skip digits past first 9 digits. + // + // - unlike RFC 2822, the valid offset ranges from -23:59 to +23:59. + // note that this restriction is unique to RFC 3339 and not ISO 8601. + // since this is not a typical Chrono behavior, we check it earlier. + + parsed.set_year(try_consume!(scan::number(s, 4, 4)))?; + s = scan::char(s, b'-')?; + parsed.set_month(try_consume!(scan::number(s, 2, 2)))?; + s = scan::char(s, b'-')?; + parsed.set_day(try_consume!(scan::number(s, 2, 2)))?; + + s = match s.as_bytes().first() { + Some(&b't') | Some(&b'T') => &s[1..], + Some(_) => return Err(INVALID), + None => return Err(TOO_SHORT), + }; + + parsed.set_hour(try_consume!(scan::number(s, 2, 2)))?; + s = scan::char(s, b':')?; + parsed.set_minute(try_consume!(scan::number(s, 2, 2)))?; + s = scan::char(s, b':')?; + parsed.set_second(try_consume!(scan::number(s, 2, 2)))?; + if s.starts_with('.') { + let nanosecond = try_consume!(scan::nanosecond(&s[1..])); + parsed.set_nanosecond(nanosecond)?; + } + + let offset = try_consume!(scan::timezone_offset_zulu(s, |s| scan::char(s, b':'))); + if offset <= -86_400 || offset >= 86_400 { + return Err(OUT_OF_RANGE); + } + parsed.set_offset(i64::from(offset))?; + + Ok((s, ())) +} + +/// Tries to parse given string into `parsed` with given formatting items. +/// Returns `Ok` when the entire string has been parsed (otherwise `parsed` should not be used). +/// There should be no trailing string after parsing; +/// use a stray [`Item::Space`](./enum.Item.html#variant.Space) to trim whitespaces. +/// +/// This particular date and time parser is: +/// +/// - Greedy. It will consume the longest possible prefix. +/// For example, `April` is always consumed entirely when the long month name is requested; +/// it equally accepts `Apr`, but prefers the longer prefix in this case. +/// +/// - Padding-agnostic (for numeric items). +/// The [`Pad`](./enum.Pad.html) field is completely ignored, +/// so one can prepend any number of whitespace then any number of zeroes before numbers. +/// +/// - (Still) obeying the intrinsic parsing width. This allows, for example, parsing `HHMMSS`. +pub fn parse<'a, I, B>(parsed: &mut Parsed, s: &str, items: I) -> ParseResult<()> +where + I: Iterator, + B: Borrow>, +{ + parse_internal(parsed, s, items).map(|_| ()).map_err(|(_s, e)| e) +} + +fn parse_internal<'a, 'b, I, B>( + parsed: &mut Parsed, + mut s: &'b str, + items: I, +) -> Result<&'b str, (&'b str, ParseError)> +where + I: Iterator, + B: Borrow>, +{ + macro_rules! try_consume { + ($e:expr) => {{ + match $e { + Ok((s_, v)) => { + s = s_; + v + } + Err(e) => return Err((s, e)), + } + }}; + } + + for item in items { + match *item.borrow() { + Item::Literal(prefix) => { + if s.len() < prefix.len() { + return Err((s, TOO_SHORT)); + } + if !s.starts_with(prefix) { + return Err((s, INVALID)); + } + s = &s[prefix.len()..]; + } + + #[cfg(any(feature = "alloc", feature = "std", test))] + Item::OwnedLiteral(ref prefix) => { + if s.len() < prefix.len() { + return Err((s, TOO_SHORT)); + } + if !s.starts_with(&prefix[..]) { + return Err((s, INVALID)); + } + s = &s[prefix.len()..]; + } + + Item::Space(_) => { + s = s.trim_left(); + } + + #[cfg(any(feature = "alloc", feature = "std", test))] + Item::OwnedSpace(_) => { + s = s.trim_left(); + } + + Item::Numeric(ref spec, ref _pad) => { + use super::Numeric::*; + type Setter = fn(&mut Parsed, i64) -> ParseResult<()>; + + let (width, signed, set): (usize, bool, Setter) = match *spec { + Year => (4, true, Parsed::set_year), + YearDiv100 => (2, false, Parsed::set_year_div_100), + YearMod100 => (2, false, Parsed::set_year_mod_100), + IsoYear => (4, true, Parsed::set_isoyear), + IsoYearDiv100 => (2, false, Parsed::set_isoyear_div_100), + IsoYearMod100 => (2, false, Parsed::set_isoyear_mod_100), + Month => (2, false, Parsed::set_month), + Day => (2, false, Parsed::set_day), + WeekFromSun => (2, false, Parsed::set_week_from_sun), + WeekFromMon => (2, false, Parsed::set_week_from_mon), + IsoWeek => (2, false, Parsed::set_isoweek), + NumDaysFromSun => (1, false, set_weekday_with_num_days_from_sunday), + WeekdayFromMon => (1, false, set_weekday_with_number_from_monday), + Ordinal => (3, false, Parsed::set_ordinal), + Hour => (2, false, Parsed::set_hour), + Hour12 => (2, false, Parsed::set_hour12), + Minute => (2, false, Parsed::set_minute), + Second => (2, false, Parsed::set_second), + Nanosecond => (9, false, Parsed::set_nanosecond), + Timestamp => (usize::MAX, false, Parsed::set_timestamp), + + // for the future expansion + Internal(ref int) => match int._dummy {}, + }; + + s = s.trim_left(); + let v = if signed { + if s.starts_with('-') { + let v = try_consume!(scan::number(&s[1..], 1, usize::MAX)); + 0i64.checked_sub(v).ok_or((s, OUT_OF_RANGE))? + } else if s.starts_with('+') { + try_consume!(scan::number(&s[1..], 1, usize::MAX)) + } else { + // if there is no explicit sign, we respect the original `width` + try_consume!(scan::number(s, 1, width)) + } + } else { + try_consume!(scan::number(s, 1, width)) + }; + set(parsed, v).map_err(|e| (s, e))?; + } + + Item::Fixed(ref spec) => { + use super::Fixed::*; + + match spec { + &ShortMonthName => { + let month0 = try_consume!(scan::short_month0(s)); + parsed.set_month(i64::from(month0) + 1).map_err(|e| (s, e))?; + } + + &LongMonthName => { + let month0 = try_consume!(scan::short_or_long_month0(s)); + parsed.set_month(i64::from(month0) + 1).map_err(|e| (s, e))?; + } + + &ShortWeekdayName => { + let weekday = try_consume!(scan::short_weekday(s)); + parsed.set_weekday(weekday).map_err(|e| (s, e))?; + } + + &LongWeekdayName => { + let weekday = try_consume!(scan::short_or_long_weekday(s)); + parsed.set_weekday(weekday).map_err(|e| (s, e))?; + } + + &LowerAmPm | &UpperAmPm => { + if s.len() < 2 { + return Err((s, TOO_SHORT)); + } + let ampm = match (s.as_bytes()[0] | 32, s.as_bytes()[1] | 32) { + (b'a', b'm') => false, + (b'p', b'm') => true, + _ => return Err((s, INVALID)), + }; + parsed.set_ampm(ampm).map_err(|e| (s, e))?; + s = &s[2..]; + } + + &Nanosecond | &Nanosecond3 | &Nanosecond6 | &Nanosecond9 => { + if s.starts_with('.') { + let nano = try_consume!(scan::nanosecond(&s[1..])); + parsed.set_nanosecond(nano).map_err(|e| (s, e))?; + } + } + + &Internal(InternalFixed { val: InternalInternal::Nanosecond3NoDot }) => { + if s.len() < 3 { + return Err((s, TOO_SHORT)); + } + let nano = try_consume!(scan::nanosecond_fixed(s, 3)); + parsed.set_nanosecond(nano).map_err(|e| (s, e))?; + } + + &Internal(InternalFixed { val: InternalInternal::Nanosecond6NoDot }) => { + if s.len() < 6 { + return Err((s, TOO_SHORT)); + } + let nano = try_consume!(scan::nanosecond_fixed(s, 6)); + parsed.set_nanosecond(nano).map_err(|e| (s, e))?; + } + + &Internal(InternalFixed { val: InternalInternal::Nanosecond9NoDot }) => { + if s.len() < 9 { + return Err((s, TOO_SHORT)); + } + let nano = try_consume!(scan::nanosecond_fixed(s, 9)); + parsed.set_nanosecond(nano).map_err(|e| (s, e))?; + } + + &TimezoneName => { + try_consume!(scan::timezone_name_skip(s)); + } + + &TimezoneOffsetColon + | &TimezoneOffsetDoubleColon + | &TimezoneOffsetTripleColon + | &TimezoneOffset => { + let offset = try_consume!(scan::timezone_offset( + s.trim_left(), + scan::colon_or_space + )); + parsed.set_offset(i64::from(offset)).map_err(|e| (s, e))?; + } + + &TimezoneOffsetColonZ | &TimezoneOffsetZ => { + let offset = try_consume!(scan::timezone_offset_zulu( + s.trim_left(), + scan::colon_or_space + )); + parsed.set_offset(i64::from(offset)).map_err(|e| (s, e))?; + } + &Internal(InternalFixed { + val: InternalInternal::TimezoneOffsetPermissive, + }) => { + let offset = try_consume!(scan::timezone_offset_permissive( + s.trim_left(), + scan::colon_or_space + )); + parsed.set_offset(i64::from(offset)).map_err(|e| (s, e))?; + } + + &RFC2822 => try_consume!(parse_rfc2822(parsed, s)), + &RFC3339 => try_consume!(parse_rfc3339(parsed, s)), + } + } + + Item::Error => { + return Err((s, BAD_FORMAT)); + } + } + } + + // if there are trailling chars, it is an error + if !s.is_empty() { + Err((s, TOO_LONG)) + } else { + Ok(s) + } +} + +/// Accepts a relaxed form of RFC3339. +/// A space or a 'T' are acepted as the separator between the date and time +/// parts. Additional spaces are allowed between each component. +/// +/// All of these examples are equivalent: +/// ``` +/// # use chrono::{DateTime, offset::FixedOffset}; +/// "2012-12-12T12:12:12Z".parse::>(); +/// "2012-12-12 12:12:12Z".parse::>(); +/// "2012- 12-12T12: 12:12Z".parse::>(); +/// ``` +impl str::FromStr for DateTime { + type Err = ParseError; + + fn from_str(s: &str) -> ParseResult> { + const DATE_ITEMS: &[Item<'static>] = &[ + Item::Numeric(Numeric::Year, Pad::Zero), + Item::Space(""), + Item::Literal("-"), + Item::Numeric(Numeric::Month, Pad::Zero), + Item::Space(""), + Item::Literal("-"), + Item::Numeric(Numeric::Day, Pad::Zero), + ]; + const TIME_ITEMS: &[Item<'static>] = &[ + Item::Numeric(Numeric::Hour, Pad::Zero), + Item::Space(""), + Item::Literal(":"), + Item::Numeric(Numeric::Minute, Pad::Zero), + Item::Space(""), + Item::Literal(":"), + Item::Numeric(Numeric::Second, Pad::Zero), + Item::Fixed(Fixed::Nanosecond), + Item::Space(""), + Item::Fixed(Fixed::TimezoneOffsetZ), + Item::Space(""), + ]; + + let mut parsed = Parsed::new(); + match parse_internal(&mut parsed, s, DATE_ITEMS.iter()) { + Err((remainder, e)) if e.0 == ParseErrorKind::TooLong => { + if remainder.starts_with('T') || remainder.starts_with(' ') { + parse(&mut parsed, &remainder[1..], TIME_ITEMS.iter())?; + } else { + return Err(INVALID); + } + } + Err((_s, e)) => return Err(e), + Ok(_) => return Err(NOT_ENOUGH), + }; + parsed.to_datetime() + } +} + +#[cfg(test)] +#[test] +fn test_parse() { + use super::IMPOSSIBLE; + use super::*; + + // workaround for Rust issue #22255 + fn parse_all(s: &str, items: &[Item]) -> ParseResult { + let mut parsed = Parsed::new(); + parse(&mut parsed, s, items.iter())?; + Ok(parsed) + } + + macro_rules! check { + ($fmt:expr, $items:expr; $err:tt) => ( + assert_eq!(parse_all($fmt, &$items), Err($err)) + ); + ($fmt:expr, $items:expr; $($k:ident: $v:expr),*) => (#[allow(unused_mut)] { + let mut expected = Parsed::new(); + $(expected.$k = Some($v);)* + assert_eq!(parse_all($fmt, &$items), Ok(expected)) + }); + } + + // empty string + check!("", []; ); + check!(" ", []; TOO_LONG); + check!("a", []; TOO_LONG); + + // whitespaces + check!("", [sp!("")]; ); + check!(" ", [sp!("")]; ); + check!("\t", [sp!("")]; ); + check!(" \n\r \n", [sp!("")]; ); + check!("a", [sp!("")]; TOO_LONG); + + // literal + check!("", [lit!("a")]; TOO_SHORT); + check!(" ", [lit!("a")]; INVALID); + check!("a", [lit!("a")]; ); + check!("aa", [lit!("a")]; TOO_LONG); + check!("A", [lit!("a")]; INVALID); + check!("xy", [lit!("xy")]; ); + check!("xy", [lit!("x"), lit!("y")]; ); + check!("x y", [lit!("x"), lit!("y")]; INVALID); + check!("xy", [lit!("x"), sp!(""), lit!("y")]; ); + check!("x y", [lit!("x"), sp!(""), lit!("y")]; ); + + // numeric + check!("1987", [num!(Year)]; year: 1987); + check!("1987 ", [num!(Year)]; TOO_LONG); + check!("0x12", [num!(Year)]; TOO_LONG); // `0` is parsed + check!("x123", [num!(Year)]; INVALID); + check!("2015", [num!(Year)]; year: 2015); + check!("0000", [num!(Year)]; year: 0); + check!("9999", [num!(Year)]; year: 9999); + check!(" \t987", [num!(Year)]; year: 987); + check!("5", [num!(Year)]; year: 5); + check!("5\0", [num!(Year)]; TOO_LONG); + check!("\x005", [num!(Year)]; INVALID); + check!("", [num!(Year)]; TOO_SHORT); + check!("12345", [num!(Year), lit!("5")]; year: 1234); + check!("12345", [nums!(Year), lit!("5")]; year: 1234); + check!("12345", [num0!(Year), lit!("5")]; year: 1234); + check!("12341234", [num!(Year), num!(Year)]; year: 1234); + check!("1234 1234", [num!(Year), num!(Year)]; year: 1234); + check!("1234 1235", [num!(Year), num!(Year)]; IMPOSSIBLE); + check!("1234 1234", [num!(Year), lit!("x"), num!(Year)]; INVALID); + check!("1234x1234", [num!(Year), lit!("x"), num!(Year)]; year: 1234); + check!("1234xx1234", [num!(Year), lit!("x"), num!(Year)]; INVALID); + check!("1234 x 1234", [num!(Year), lit!("x"), num!(Year)]; INVALID); + + // signed numeric + check!("-42", [num!(Year)]; year: -42); + check!("+42", [num!(Year)]; year: 42); + check!("-0042", [num!(Year)]; year: -42); + check!("+0042", [num!(Year)]; year: 42); + check!("-42195", [num!(Year)]; year: -42195); + check!("+42195", [num!(Year)]; year: 42195); + check!(" -42195", [num!(Year)]; year: -42195); + check!(" +42195", [num!(Year)]; year: 42195); + check!(" - 42", [num!(Year)]; INVALID); + check!(" + 42", [num!(Year)]; INVALID); + check!("-", [num!(Year)]; TOO_SHORT); + check!("+", [num!(Year)]; TOO_SHORT); + + // unsigned numeric + check!("345", [num!(Ordinal)]; ordinal: 345); + check!("+345", [num!(Ordinal)]; INVALID); + check!("-345", [num!(Ordinal)]; INVALID); + check!(" 345", [num!(Ordinal)]; ordinal: 345); + check!(" +345", [num!(Ordinal)]; INVALID); + check!(" -345", [num!(Ordinal)]; INVALID); + + // various numeric fields + check!("1234 5678", + [num!(Year), num!(IsoYear)]; + year: 1234, isoyear: 5678); + check!("12 34 56 78", + [num!(YearDiv100), num!(YearMod100), num!(IsoYearDiv100), num!(IsoYearMod100)]; + year_div_100: 12, year_mod_100: 34, isoyear_div_100: 56, isoyear_mod_100: 78); + check!("1 2 3 4 5 6", + [num!(Month), num!(Day), num!(WeekFromSun), num!(WeekFromMon), num!(IsoWeek), + num!(NumDaysFromSun)]; + month: 1, day: 2, week_from_sun: 3, week_from_mon: 4, isoweek: 5, weekday: Weekday::Sat); + check!("7 89 01", + [num!(WeekdayFromMon), num!(Ordinal), num!(Hour12)]; + weekday: Weekday::Sun, ordinal: 89, hour_mod_12: 1); + check!("23 45 6 78901234 567890123", + [num!(Hour), num!(Minute), num!(Second), num!(Nanosecond), num!(Timestamp)]; + hour_div_12: 1, hour_mod_12: 11, minute: 45, second: 6, nanosecond: 78_901_234, + timestamp: 567_890_123); + + // fixed: month and weekday names + check!("apr", [fix!(ShortMonthName)]; month: 4); + check!("Apr", [fix!(ShortMonthName)]; month: 4); + check!("APR", [fix!(ShortMonthName)]; month: 4); + check!("ApR", [fix!(ShortMonthName)]; month: 4); + check!("April", [fix!(ShortMonthName)]; TOO_LONG); // `Apr` is parsed + check!("A", [fix!(ShortMonthName)]; TOO_SHORT); + check!("Sol", [fix!(ShortMonthName)]; INVALID); + check!("Apr", [fix!(LongMonthName)]; month: 4); + check!("Apri", [fix!(LongMonthName)]; TOO_LONG); // `Apr` is parsed + check!("April", [fix!(LongMonthName)]; month: 4); + check!("Aprill", [fix!(LongMonthName)]; TOO_LONG); + check!("Aprill", [fix!(LongMonthName), lit!("l")]; month: 4); + check!("Aprl", [fix!(LongMonthName), lit!("l")]; month: 4); + check!("April", [fix!(LongMonthName), lit!("il")]; TOO_SHORT); // do not backtrack + check!("thu", [fix!(ShortWeekdayName)]; weekday: Weekday::Thu); + check!("Thu", [fix!(ShortWeekdayName)]; weekday: Weekday::Thu); + check!("THU", [fix!(ShortWeekdayName)]; weekday: Weekday::Thu); + check!("tHu", [fix!(ShortWeekdayName)]; weekday: Weekday::Thu); + check!("Thursday", [fix!(ShortWeekdayName)]; TOO_LONG); // `Thu` is parsed + check!("T", [fix!(ShortWeekdayName)]; TOO_SHORT); + check!("The", [fix!(ShortWeekdayName)]; INVALID); + check!("Nop", [fix!(ShortWeekdayName)]; INVALID); + check!("Thu", [fix!(LongWeekdayName)]; weekday: Weekday::Thu); + check!("Thur", [fix!(LongWeekdayName)]; TOO_LONG); // `Thu` is parsed + check!("Thurs", [fix!(LongWeekdayName)]; TOO_LONG); // ditto + check!("Thursday", [fix!(LongWeekdayName)]; weekday: Weekday::Thu); + check!("Thursdays", [fix!(LongWeekdayName)]; TOO_LONG); + check!("Thursdays", [fix!(LongWeekdayName), lit!("s")]; weekday: Weekday::Thu); + check!("Thus", [fix!(LongWeekdayName), lit!("s")]; weekday: Weekday::Thu); + check!("Thursday", [fix!(LongWeekdayName), lit!("rsday")]; TOO_SHORT); // do not backtrack + + // fixed: am/pm + check!("am", [fix!(LowerAmPm)]; hour_div_12: 0); + check!("pm", [fix!(LowerAmPm)]; hour_div_12: 1); + check!("AM", [fix!(LowerAmPm)]; hour_div_12: 0); + check!("PM", [fix!(LowerAmPm)]; hour_div_12: 1); + check!("am", [fix!(UpperAmPm)]; hour_div_12: 0); + check!("pm", [fix!(UpperAmPm)]; hour_div_12: 1); + check!("AM", [fix!(UpperAmPm)]; hour_div_12: 0); + check!("PM", [fix!(UpperAmPm)]; hour_div_12: 1); + check!("Am", [fix!(LowerAmPm)]; hour_div_12: 0); + check!(" Am", [fix!(LowerAmPm)]; INVALID); + check!("ame", [fix!(LowerAmPm)]; TOO_LONG); // `am` is parsed + check!("a", [fix!(LowerAmPm)]; TOO_SHORT); + check!("p", [fix!(LowerAmPm)]; TOO_SHORT); + check!("x", [fix!(LowerAmPm)]; TOO_SHORT); + check!("xx", [fix!(LowerAmPm)]; INVALID); + check!("", [fix!(LowerAmPm)]; TOO_SHORT); + + // fixed: dot plus nanoseconds + check!("", [fix!(Nanosecond)]; ); // no field set, but not an error + check!("4", [fix!(Nanosecond)]; TOO_LONG); // never consumes `4` + check!("4", [fix!(Nanosecond), num!(Second)]; second: 4); + check!(".0", [fix!(Nanosecond)]; nanosecond: 0); + check!(".4", [fix!(Nanosecond)]; nanosecond: 400_000_000); + check!(".42", [fix!(Nanosecond)]; nanosecond: 420_000_000); + check!(".421", [fix!(Nanosecond)]; nanosecond: 421_000_000); + check!(".42195", [fix!(Nanosecond)]; nanosecond: 421_950_000); + check!(".421950803", [fix!(Nanosecond)]; nanosecond: 421_950_803); + check!(".421950803547", [fix!(Nanosecond)]; nanosecond: 421_950_803); + check!(".000000003547", [fix!(Nanosecond)]; nanosecond: 3); + check!(".000000000547", [fix!(Nanosecond)]; nanosecond: 0); + check!(".", [fix!(Nanosecond)]; TOO_SHORT); + check!(".4x", [fix!(Nanosecond)]; TOO_LONG); + check!(". 4", [fix!(Nanosecond)]; INVALID); + check!(" .4", [fix!(Nanosecond)]; TOO_LONG); // no automatic trimming + + // fixed: nanoseconds without the dot + check!("", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); + check!("0", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); + check!("4", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); + check!("42", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); + check!("421", [internal_fix!(Nanosecond3NoDot)]; nanosecond: 421_000_000); + check!("42143", [internal_fix!(Nanosecond3NoDot), num!(Second)]; nanosecond: 421_000_000, second: 43); + check!("42195", [internal_fix!(Nanosecond3NoDot)]; TOO_LONG); + check!("4x", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); + check!(" 4", [internal_fix!(Nanosecond3NoDot)]; INVALID); + check!(".421", [internal_fix!(Nanosecond3NoDot)]; INVALID); + + check!("", [internal_fix!(Nanosecond6NoDot)]; TOO_SHORT); + check!("0", [internal_fix!(Nanosecond6NoDot)]; TOO_SHORT); + check!("42195", [internal_fix!(Nanosecond6NoDot)]; TOO_SHORT); + check!("421950", [internal_fix!(Nanosecond6NoDot)]; nanosecond: 421_950_000); + check!("000003", [internal_fix!(Nanosecond6NoDot)]; nanosecond: 3000); + check!("000000", [internal_fix!(Nanosecond6NoDot)]; nanosecond: 0); + check!("4x", [internal_fix!(Nanosecond6NoDot)]; TOO_SHORT); + check!(" 4", [internal_fix!(Nanosecond6NoDot)]; INVALID); + check!(".42100", [internal_fix!(Nanosecond6NoDot)]; INVALID); + + check!("", [internal_fix!(Nanosecond9NoDot)]; TOO_SHORT); + check!("42195", [internal_fix!(Nanosecond9NoDot)]; TOO_SHORT); + check!("421950803", [internal_fix!(Nanosecond9NoDot)]; nanosecond: 421_950_803); + check!("000000003", [internal_fix!(Nanosecond9NoDot)]; nanosecond: 3); + check!("42195080354", [internal_fix!(Nanosecond9NoDot), num!(Second)]; nanosecond: 421_950_803, second: 54); // don't skip digits that come after the 9 + check!("421950803547", [internal_fix!(Nanosecond9NoDot)]; TOO_LONG); + check!("000000000", [internal_fix!(Nanosecond9NoDot)]; nanosecond: 0); + check!("00000000x", [internal_fix!(Nanosecond9NoDot)]; INVALID); + check!(" 4", [internal_fix!(Nanosecond9NoDot)]; INVALID); + check!(".42100000", [internal_fix!(Nanosecond9NoDot)]; INVALID); + + // fixed: timezone offsets + check!("+00:00", [fix!(TimezoneOffset)]; offset: 0); + check!("-00:00", [fix!(TimezoneOffset)]; offset: 0); + check!("+00:01", [fix!(TimezoneOffset)]; offset: 60); + check!("-00:01", [fix!(TimezoneOffset)]; offset: -60); + check!("+00:30", [fix!(TimezoneOffset)]; offset: 30 * 60); + check!("-00:30", [fix!(TimezoneOffset)]; offset: -30 * 60); + check!("+04:56", [fix!(TimezoneOffset)]; offset: 296 * 60); + check!("-04:56", [fix!(TimezoneOffset)]; offset: -296 * 60); + check!("+24:00", [fix!(TimezoneOffset)]; offset: 24 * 60 * 60); + check!("-24:00", [fix!(TimezoneOffset)]; offset: -24 * 60 * 60); + check!("+99:59", [fix!(TimezoneOffset)]; offset: (100 * 60 - 1) * 60); + check!("-99:59", [fix!(TimezoneOffset)]; offset: -(100 * 60 - 1) * 60); + check!("+00:59", [fix!(TimezoneOffset)]; offset: 59 * 60); + check!("+00:60", [fix!(TimezoneOffset)]; OUT_OF_RANGE); + check!("+00:99", [fix!(TimezoneOffset)]; OUT_OF_RANGE); + check!("#12:34", [fix!(TimezoneOffset)]; INVALID); + check!("12:34", [fix!(TimezoneOffset)]; INVALID); + check!("+12:34 ", [fix!(TimezoneOffset)]; TOO_LONG); + check!(" +12:34", [fix!(TimezoneOffset)]; offset: 754 * 60); + check!("\t -12:34", [fix!(TimezoneOffset)]; offset: -754 * 60); + check!("", [fix!(TimezoneOffset)]; TOO_SHORT); + check!("+", [fix!(TimezoneOffset)]; TOO_SHORT); + check!("+1", [fix!(TimezoneOffset)]; TOO_SHORT); + check!("+12", [fix!(TimezoneOffset)]; TOO_SHORT); + check!("+123", [fix!(TimezoneOffset)]; TOO_SHORT); + check!("+1234", [fix!(TimezoneOffset)]; offset: 754 * 60); + check!("+12345", [fix!(TimezoneOffset)]; TOO_LONG); + check!("+12345", [fix!(TimezoneOffset), num!(Day)]; offset: 754 * 60, day: 5); + check!("Z", [fix!(TimezoneOffset)]; INVALID); + check!("z", [fix!(TimezoneOffset)]; INVALID); + check!("Z", [fix!(TimezoneOffsetZ)]; offset: 0); + check!("z", [fix!(TimezoneOffsetZ)]; offset: 0); + check!("Y", [fix!(TimezoneOffsetZ)]; INVALID); + check!("Zulu", [fix!(TimezoneOffsetZ), lit!("ulu")]; offset: 0); + check!("zulu", [fix!(TimezoneOffsetZ), lit!("ulu")]; offset: 0); + check!("+1234ulu", [fix!(TimezoneOffsetZ), lit!("ulu")]; offset: 754 * 60); + check!("+12:34ulu", [fix!(TimezoneOffsetZ), lit!("ulu")]; offset: 754 * 60); + check!("Z", [internal_fix!(TimezoneOffsetPermissive)]; offset: 0); + check!("z", [internal_fix!(TimezoneOffsetPermissive)]; offset: 0); + check!("+12:00", [internal_fix!(TimezoneOffsetPermissive)]; offset: 12 * 60 * 60); + check!("+12", [internal_fix!(TimezoneOffsetPermissive)]; offset: 12 * 60 * 60); + check!("CEST 5", [fix!(TimezoneName), lit!(" "), num!(Day)]; day: 5); + + // some practical examples + check!("2015-02-04T14:37:05+09:00", + [num!(Year), lit!("-"), num!(Month), lit!("-"), num!(Day), lit!("T"), + num!(Hour), lit!(":"), num!(Minute), lit!(":"), num!(Second), fix!(TimezoneOffset)]; + year: 2015, month: 2, day: 4, hour_div_12: 1, hour_mod_12: 2, + minute: 37, second: 5, offset: 32400); + check!("20150204143705567", + [num!(Year), num!(Month), num!(Day), + num!(Hour), num!(Minute), num!(Second), internal_fix!(Nanosecond3NoDot)]; + year: 2015, month: 2, day: 4, hour_div_12: 1, hour_mod_12: 2, + minute: 37, second: 5, nanosecond: 567000000); + check!("Mon, 10 Jun 2013 09:32:37 GMT", + [fix!(ShortWeekdayName), lit!(","), sp!(" "), num!(Day), sp!(" "), + fix!(ShortMonthName), sp!(" "), num!(Year), sp!(" "), num!(Hour), lit!(":"), + num!(Minute), lit!(":"), num!(Second), sp!(" "), lit!("GMT")]; + year: 2013, month: 6, day: 10, weekday: Weekday::Mon, + hour_div_12: 0, hour_mod_12: 9, minute: 32, second: 37); + check!("Sun Aug 02 13:39:15 CEST 2020", + [fix!(ShortWeekdayName), sp!(" "), fix!(ShortMonthName), sp!(" "), + num!(Day), sp!(" "), num!(Hour), lit!(":"), num!(Minute), lit!(":"), + num!(Second), sp!(" "), fix!(TimezoneName), sp!(" "), num!(Year)]; + year: 2020, month: 8, day: 2, weekday: Weekday::Sun, + hour_div_12: 1, hour_mod_12: 1, minute: 39, second: 15); + check!("20060102150405", + [num!(Year), num!(Month), num!(Day), num!(Hour), num!(Minute), num!(Second)]; + year: 2006, month: 1, day: 2, hour_div_12: 1, hour_mod_12: 3, minute: 4, second: 5); + check!("3:14PM", + [num!(Hour12), lit!(":"), num!(Minute), fix!(LowerAmPm)]; + hour_div_12: 1, hour_mod_12: 3, minute: 14); + check!("12345678901234.56789", + [num!(Timestamp), lit!("."), num!(Nanosecond)]; + nanosecond: 56_789, timestamp: 12_345_678_901_234); + check!("12345678901234.56789", + [num!(Timestamp), fix!(Nanosecond)]; + nanosecond: 567_890_000, timestamp: 12_345_678_901_234); +} + +#[cfg(test)] +#[test] +fn test_rfc2822() { + use super::NOT_ENOUGH; + use super::*; + use crate::offset::FixedOffset; + use crate::DateTime; + + // Test data - (input, Ok(expected result after parse and format) or Err(error code)) + let testdates = [ + ("Tue, 20 Jan 2015 17:35:20 -0800", Ok("Tue, 20 Jan 2015 17:35:20 -0800")), // normal case + ("Fri, 2 Jan 2015 17:35:20 -0800", Ok("Fri, 02 Jan 2015 17:35:20 -0800")), // folding whitespace + ("Fri, 02 Jan 2015 17:35:20 -0800", Ok("Fri, 02 Jan 2015 17:35:20 -0800")), // leading zero + ("Tue, 20 Jan 2015 17:35:20 -0800 (UTC)", Ok("Tue, 20 Jan 2015 17:35:20 -0800")), // trailing comment + ( + r"Tue, 20 Jan 2015 17:35:20 -0800 ( (UTC ) (\( (a)\(( \t ) ) \\( \) ))", + Ok("Tue, 20 Jan 2015 17:35:20 -0800"), + ), // complex trailing comment + (r"Tue, 20 Jan 2015 17:35:20 -0800 (UTC\)", Err(TOO_LONG)), // incorrect comment, not enough closing parentheses + ( + "Tue, 20 Jan 2015 17:35:20 -0800 (UTC)\t \r\n(Anothercomment)", + Ok("Tue, 20 Jan 2015 17:35:20 -0800"), + ), // multiple comments + ("Tue, 20 Jan 2015 17:35:20 -0800 (UTC) ", Err(TOO_LONG)), // trailing whitespace after comment + ("20 Jan 2015 17:35:20 -0800", Ok("Tue, 20 Jan 2015 17:35:20 -0800")), // no day of week + ("20 JAN 2015 17:35:20 -0800", Ok("Tue, 20 Jan 2015 17:35:20 -0800")), // upper case month + ("Tue, 20 Jan 2015 17:35 -0800", Ok("Tue, 20 Jan 2015 17:35:00 -0800")), // no second + ("11 Sep 2001 09:45:00 EST", Ok("Tue, 11 Sep 2001 09:45:00 -0500")), + ("30 Feb 2015 17:35:20 -0800", Err(OUT_OF_RANGE)), // bad day of month + ("Tue, 20 Jan 2015", Err(TOO_SHORT)), // omitted fields + ("Tue, 20 Avr 2015 17:35:20 -0800", Err(INVALID)), // bad month name + ("Tue, 20 Jan 2015 25:35:20 -0800", Err(OUT_OF_RANGE)), // bad hour + ("Tue, 20 Jan 2015 7:35:20 -0800", Err(INVALID)), // bad # of digits in hour + ("Tue, 20 Jan 2015 17:65:20 -0800", Err(OUT_OF_RANGE)), // bad minute + ("Tue, 20 Jan 2015 17:35:90 -0800", Err(OUT_OF_RANGE)), // bad second + ("Tue, 20 Jan 2015 17:35:20 -0890", Err(OUT_OF_RANGE)), // bad offset + ("6 Jun 1944 04:00:00Z", Err(INVALID)), // bad offset (zulu not allowed) + ("Tue, 20 Jan 2015 17:35:20 HAS", Err(NOT_ENOUGH)), // bad named time zone + ]; + + fn rfc2822_to_datetime(date: &str) -> ParseResult> { + let mut parsed = Parsed::new(); + parse(&mut parsed, date, [Item::Fixed(Fixed::RFC2822)].iter())?; + parsed.to_datetime() + } + + fn fmt_rfc2822_datetime(dt: DateTime) -> String { + dt.format_with_items([Item::Fixed(Fixed::RFC2822)].iter()).to_string() + } + + // Test against test data above + for &(date, checkdate) in testdates.iter() { + let d = rfc2822_to_datetime(date); // parse a date + let dt = match d { + // did we get a value? + Ok(dt) => Ok(fmt_rfc2822_datetime(dt)), // yes, go on + Err(e) => Err(e), // otherwise keep an error for the comparison + }; + if dt != checkdate.map(|s| s.to_string()) { + // check for expected result + panic!( + "Date conversion failed for {}\nReceived: {:?}\nExpected: {:?}", + date, dt, checkdate + ); + } + } +} + +#[cfg(test)] +#[test] +fn parse_rfc850() { + use crate::{TimeZone, Utc}; + + static RFC850_FMT: &str = "%A, %d-%b-%y %T GMT"; + + let dt_str = "Sunday, 06-Nov-94 08:49:37 GMT"; + let dt = Utc.with_ymd_and_hms(1994, 11, 6, 8, 49, 37).unwrap(); + + // Check that the format is what we expect + assert_eq!(dt.format(RFC850_FMT).to_string(), dt_str); + + // Check that it parses correctly + assert_eq!(Ok(dt), Utc.datetime_from_str("Sunday, 06-Nov-94 08:49:37 GMT", RFC850_FMT)); + + // Check that the rest of the weekdays parse correctly (this test originally failed because + // Sunday parsed incorrectly). + let testdates = [ + (Utc.with_ymd_and_hms(1994, 11, 7, 8, 49, 37).unwrap(), "Monday, 07-Nov-94 08:49:37 GMT"), + (Utc.with_ymd_and_hms(1994, 11, 8, 8, 49, 37).unwrap(), "Tuesday, 08-Nov-94 08:49:37 GMT"), + ( + Utc.with_ymd_and_hms(1994, 11, 9, 8, 49, 37).unwrap(), + "Wednesday, 09-Nov-94 08:49:37 GMT", + ), + ( + Utc.with_ymd_and_hms(1994, 11, 10, 8, 49, 37).unwrap(), + "Thursday, 10-Nov-94 08:49:37 GMT", + ), + (Utc.with_ymd_and_hms(1994, 11, 11, 8, 49, 37).unwrap(), "Friday, 11-Nov-94 08:49:37 GMT"), + ( + Utc.with_ymd_and_hms(1994, 11, 12, 8, 49, 37).unwrap(), + "Saturday, 12-Nov-94 08:49:37 GMT", + ), + ]; + + for val in &testdates { + assert_eq!(Ok(val.0), Utc.datetime_from_str(val.1, RFC850_FMT)); + } +} + +#[cfg(test)] +#[test] +fn test_rfc3339() { + use super::*; + use crate::offset::FixedOffset; + use crate::DateTime; + + // Test data - (input, Ok(expected result after parse and format) or Err(error code)) + let testdates = [ + ("2015-01-20T17:35:20-08:00", Ok("2015-01-20T17:35:20-08:00")), // normal case + ("1944-06-06T04:04:00Z", Ok("1944-06-06T04:04:00+00:00")), // D-day + ("2001-09-11T09:45:00-08:00", Ok("2001-09-11T09:45:00-08:00")), + ("2015-01-20T17:35:20.001-08:00", Ok("2015-01-20T17:35:20.001-08:00")), + ("2015-01-20T17:35:20.000031-08:00", Ok("2015-01-20T17:35:20.000031-08:00")), + ("2015-01-20T17:35:20.000000004-08:00", Ok("2015-01-20T17:35:20.000000004-08:00")), + ("2015-01-20T17:35:20.000000000452-08:00", Ok("2015-01-20T17:35:20-08:00")), // too small + ("2015-02-30T17:35:20-08:00", Err(OUT_OF_RANGE)), // bad day of month + ("2015-01-20T25:35:20-08:00", Err(OUT_OF_RANGE)), // bad hour + ("2015-01-20T17:65:20-08:00", Err(OUT_OF_RANGE)), // bad minute + ("2015-01-20T17:35:90-08:00", Err(OUT_OF_RANGE)), // bad second + ("2015-01-20T17:35:20-24:00", Err(OUT_OF_RANGE)), // bad offset + ]; + + fn rfc3339_to_datetime(date: &str) -> ParseResult> { + let mut parsed = Parsed::new(); + parse(&mut parsed, date, [Item::Fixed(Fixed::RFC3339)].iter())?; + parsed.to_datetime() + } + + fn fmt_rfc3339_datetime(dt: DateTime) -> String { + dt.format_with_items([Item::Fixed(Fixed::RFC3339)].iter()).to_string() + } + + // Test against test data above + for &(date, checkdate) in testdates.iter() { + let d = rfc3339_to_datetime(date); // parse a date + let dt = match d { + // did we get a value? + Ok(dt) => Ok(fmt_rfc3339_datetime(dt)), // yes, go on + Err(e) => Err(e), // otherwise keep an error for the comparison + }; + if dt != checkdate.map(|s| s.to_string()) { + // check for expected result + panic!( + "Date conversion failed for {}\nReceived: {:?}\nExpected: {:?}", + date, dt, checkdate + ); + } + } +} diff --git a/javascript-engine/external/chrono/src/format/parsed.rs b/javascript-engine/external/chrono/src/format/parsed.rs new file mode 100644 index 0000000..54679cc --- /dev/null +++ b/javascript-engine/external/chrono/src/format/parsed.rs @@ -0,0 +1,1290 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! A collection of parsed date and time items. +//! They can be constructed incrementally while being checked for consistency. + +use num_integer::div_rem; +use num_traits::ToPrimitive; + +use super::{ParseResult, IMPOSSIBLE, NOT_ENOUGH, OUT_OF_RANGE}; +use crate::naive::{NaiveDate, NaiveDateTime, NaiveTime}; +use crate::offset::{FixedOffset, LocalResult, Offset, TimeZone}; +use crate::oldtime::Duration as OldDuration; +use crate::DateTime; +use crate::Weekday; +use crate::{Datelike, Timelike}; + +/// Parsed parts of date and time. There are two classes of methods: +/// +/// - `set_*` methods try to set given field(s) while checking for the consistency. +/// It may or may not check for the range constraint immediately (for efficiency reasons). +/// +/// - `to_*` methods try to make a concrete date and time value out of set fields. +/// It fully checks any remaining out-of-range conditions and inconsistent/impossible fields. +#[derive(Clone, PartialEq, Eq, Debug, Default)] +pub struct Parsed { + /// Year. + /// + /// This can be negative unlike [`year_div_100`](#structfield.year_div_100) + /// and [`year_mod_100`](#structfield.year_mod_100) fields. + pub year: Option, + + /// Year divided by 100. Implies that the year is >= 1 BCE when set. + /// + /// Due to the common usage, if this field is missing but + /// [`year_mod_100`](#structfield.year_mod_100) is present, + /// it is inferred to 19 when `year_mod_100 >= 70` and 20 otherwise. + pub year_div_100: Option, + + /// Year modulo 100. Implies that the year is >= 1 BCE when set. + pub year_mod_100: Option, + + /// Year in the [ISO week date](../naive/struct.NaiveDate.html#week-date). + /// + /// This can be negative unlike [`isoyear_div_100`](#structfield.isoyear_div_100) and + /// [`isoyear_mod_100`](#structfield.isoyear_mod_100) fields. + pub isoyear: Option, + + /// Year in the [ISO week date](../naive/struct.NaiveDate.html#week-date), divided by 100. + /// Implies that the year is >= 1 BCE when set. + /// + /// Due to the common usage, if this field is missing but + /// [`isoyear_mod_100`](#structfield.isoyear_mod_100) is present, + /// it is inferred to 19 when `isoyear_mod_100 >= 70` and 20 otherwise. + pub isoyear_div_100: Option, + + /// Year in the [ISO week date](../naive/struct.NaiveDate.html#week-date), modulo 100. + /// Implies that the year is >= 1 BCE when set. + pub isoyear_mod_100: Option, + + /// Month (1--12). + pub month: Option, + + /// Week number, where the week 1 starts at the first Sunday of January + /// (0--53, 1--53 or 1--52 depending on the year). + pub week_from_sun: Option, + + /// Week number, where the week 1 starts at the first Monday of January + /// (0--53, 1--53 or 1--52 depending on the year). + pub week_from_mon: Option, + + /// [ISO week number](../naive/struct.NaiveDate.html#week-date) + /// (1--52 or 1--53 depending on the year). + pub isoweek: Option, + + /// Day of the week. + pub weekday: Option, + + /// Day of the year (1--365 or 1--366 depending on the year). + pub ordinal: Option, + + /// Day of the month (1--28, 1--29, 1--30 or 1--31 depending on the month). + pub day: Option, + + /// Hour number divided by 12 (0--1). 0 indicates AM and 1 indicates PM. + pub hour_div_12: Option, + + /// Hour number modulo 12 (0--11). + pub hour_mod_12: Option, + + /// Minute number (0--59). + pub minute: Option, + + /// Second number (0--60, accounting for leap seconds). + pub second: Option, + + /// The number of nanoseconds since the whole second (0--999,999,999). + pub nanosecond: Option, + + /// The number of non-leap seconds since the midnight UTC on January 1, 1970. + /// + /// This can be off by one if [`second`](#structfield.second) is 60 (a leap second). + pub timestamp: Option, + + /// Offset from the local time to UTC, in seconds. + pub offset: Option, + + /// A dummy field to make this type not fully destructible (required for API stability). + _dummy: (), +} + +/// Checks if `old` is either empty or has the same value as `new` (i.e. "consistent"), +/// and if it is empty, set `old` to `new` as well. +#[inline] +fn set_if_consistent(old: &mut Option, new: T) -> ParseResult<()> { + if let Some(ref old) = *old { + if *old == new { + Ok(()) + } else { + Err(IMPOSSIBLE) + } + } else { + *old = Some(new); + Ok(()) + } +} + +impl Parsed { + /// Returns the initial value of parsed parts. + pub fn new() -> Parsed { + Parsed::default() + } + + /// Tries to set the [`year`](#structfield.year) field from given value. + #[inline] + pub fn set_year(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.year, value.to_i32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`year_div_100`](#structfield.year_div_100) field from given value. + #[inline] + pub fn set_year_div_100(&mut self, value: i64) -> ParseResult<()> { + if value < 0 { + return Err(OUT_OF_RANGE); + } + set_if_consistent(&mut self.year_div_100, value.to_i32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`year_mod_100`](#structfield.year_mod_100) field from given value. + #[inline] + pub fn set_year_mod_100(&mut self, value: i64) -> ParseResult<()> { + if value < 0 { + return Err(OUT_OF_RANGE); + } + set_if_consistent(&mut self.year_mod_100, value.to_i32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`isoyear`](#structfield.isoyear) field from given value. + #[inline] + pub fn set_isoyear(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.isoyear, value.to_i32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`isoyear_div_100`](#structfield.isoyear_div_100) field from given value. + #[inline] + pub fn set_isoyear_div_100(&mut self, value: i64) -> ParseResult<()> { + if value < 0 { + return Err(OUT_OF_RANGE); + } + set_if_consistent(&mut self.isoyear_div_100, value.to_i32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`isoyear_mod_100`](#structfield.isoyear_mod_100) field from given value. + #[inline] + pub fn set_isoyear_mod_100(&mut self, value: i64) -> ParseResult<()> { + if value < 0 { + return Err(OUT_OF_RANGE); + } + set_if_consistent(&mut self.isoyear_mod_100, value.to_i32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`month`](#structfield.month) field from given value. + #[inline] + pub fn set_month(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.month, value.to_u32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`week_from_sun`](#structfield.week_from_sun) field from given value. + #[inline] + pub fn set_week_from_sun(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.week_from_sun, value.to_u32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`week_from_mon`](#structfield.week_from_mon) field from given value. + #[inline] + pub fn set_week_from_mon(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.week_from_mon, value.to_u32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`isoweek`](#structfield.isoweek) field from given value. + #[inline] + pub fn set_isoweek(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.isoweek, value.to_u32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`weekday`](#structfield.weekday) field from given value. + #[inline] + pub fn set_weekday(&mut self, value: Weekday) -> ParseResult<()> { + set_if_consistent(&mut self.weekday, value) + } + + /// Tries to set the [`ordinal`](#structfield.ordinal) field from given value. + #[inline] + pub fn set_ordinal(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.ordinal, value.to_u32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`day`](#structfield.day) field from given value. + #[inline] + pub fn set_day(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.day, value.to_u32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`hour_div_12`](#structfield.hour_div_12) field from given value. + /// (`false` for AM, `true` for PM) + #[inline] + pub fn set_ampm(&mut self, value: bool) -> ParseResult<()> { + set_if_consistent(&mut self.hour_div_12, u32::from(value)) + } + + /// Tries to set the [`hour_mod_12`](#structfield.hour_mod_12) field from + /// given hour number in 12-hour clocks. + #[inline] + pub fn set_hour12(&mut self, value: i64) -> ParseResult<()> { + if !(1..=12).contains(&value) { + return Err(OUT_OF_RANGE); + } + set_if_consistent(&mut self.hour_mod_12, value as u32 % 12) + } + + /// Tries to set both [`hour_div_12`](#structfield.hour_div_12) and + /// [`hour_mod_12`](#structfield.hour_mod_12) fields from given value. + #[inline] + pub fn set_hour(&mut self, value: i64) -> ParseResult<()> { + let v = value.to_u32().ok_or(OUT_OF_RANGE)?; + set_if_consistent(&mut self.hour_div_12, v / 12)?; + set_if_consistent(&mut self.hour_mod_12, v % 12)?; + Ok(()) + } + + /// Tries to set the [`minute`](#structfield.minute) field from given value. + #[inline] + pub fn set_minute(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.minute, value.to_u32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`second`](#structfield.second) field from given value. + #[inline] + pub fn set_second(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.second, value.to_u32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`nanosecond`](#structfield.nanosecond) field from given value. + #[inline] + pub fn set_nanosecond(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.nanosecond, value.to_u32().ok_or(OUT_OF_RANGE)?) + } + + /// Tries to set the [`timestamp`](#structfield.timestamp) field from given value. + #[inline] + pub fn set_timestamp(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.timestamp, value) + } + + /// Tries to set the [`offset`](#structfield.offset) field from given value. + #[inline] + pub fn set_offset(&mut self, value: i64) -> ParseResult<()> { + set_if_consistent(&mut self.offset, value.to_i32().ok_or(OUT_OF_RANGE)?) + } + + /// Returns a parsed naive date out of given fields. + /// + /// This method is able to determine the date from given subset of fields: + /// + /// - Year, month, day. + /// - Year, day of the year (ordinal). + /// - Year, week number counted from Sunday or Monday, day of the week. + /// - ISO week date. + /// + /// Gregorian year and ISO week date year can have their century number (`*_div_100`) omitted, + /// the two-digit year is used to guess the century number then. + pub fn to_naive_date(&self) -> ParseResult { + fn resolve_year( + y: Option, + q: Option, + r: Option, + ) -> ParseResult> { + match (y, q, r) { + // if there is no further information, simply return the given full year. + // this is a common case, so let's avoid division here. + (y, None, None) => Ok(y), + + // if there is a full year *and* also quotient and/or modulo, + // check if present quotient and/or modulo is consistent to the full year. + // since the presence of those fields means a positive full year, + // we should filter a negative full year first. + (Some(y), q, r @ Some(0..=99)) | (Some(y), q, r @ None) => { + if y < 0 { + return Err(OUT_OF_RANGE); + } + let (q_, r_) = div_rem(y, 100); + if q.unwrap_or(q_) == q_ && r.unwrap_or(r_) == r_ { + Ok(Some(y)) + } else { + Err(IMPOSSIBLE) + } + } + + // the full year is missing but we have quotient and modulo. + // reconstruct the full year. make sure that the result is always positive. + (None, Some(q), Some(r @ 0..=99)) => { + if q < 0 { + return Err(OUT_OF_RANGE); + } + let y = q.checked_mul(100).and_then(|v| v.checked_add(r)); + Ok(Some(y.ok_or(OUT_OF_RANGE)?)) + } + + // we only have modulo. try to interpret a modulo as a conventional two-digit year. + // note: we are affected by Rust issue #18060. avoid multiple range patterns. + (None, None, Some(r @ 0..=99)) => Ok(Some(r + if r < 70 { 2000 } else { 1900 })), + + // otherwise it is an out-of-bound or insufficient condition. + (None, Some(_), None) => Err(NOT_ENOUGH), + (_, _, Some(_)) => Err(OUT_OF_RANGE), + } + } + + let given_year = resolve_year(self.year, self.year_div_100, self.year_mod_100)?; + let given_isoyear = resolve_year(self.isoyear, self.isoyear_div_100, self.isoyear_mod_100)?; + + // verify the normal year-month-day date. + let verify_ymd = |date: NaiveDate| { + let year = date.year(); + let (year_div_100, year_mod_100) = if year >= 0 { + let (q, r) = div_rem(year, 100); + (Some(q), Some(r)) + } else { + (None, None) // they should be empty to be consistent + }; + let month = date.month(); + let day = date.day(); + self.year.unwrap_or(year) == year + && self.year_div_100.or(year_div_100) == year_div_100 + && self.year_mod_100.or(year_mod_100) == year_mod_100 + && self.month.unwrap_or(month) == month + && self.day.unwrap_or(day) == day + }; + + // verify the ISO week date. + let verify_isoweekdate = |date: NaiveDate| { + let week = date.iso_week(); + let isoyear = week.year(); + let isoweek = week.week(); + let weekday = date.weekday(); + let (isoyear_div_100, isoyear_mod_100) = if isoyear >= 0 { + let (q, r) = div_rem(isoyear, 100); + (Some(q), Some(r)) + } else { + (None, None) // they should be empty to be consistent + }; + self.isoyear.unwrap_or(isoyear) == isoyear + && self.isoyear_div_100.or(isoyear_div_100) == isoyear_div_100 + && self.isoyear_mod_100.or(isoyear_mod_100) == isoyear_mod_100 + && self.isoweek.unwrap_or(isoweek) == isoweek + && self.weekday.unwrap_or(weekday) == weekday + }; + + // verify the ordinal and other (non-ISO) week dates. + let verify_ordinal = |date: NaiveDate| { + let ordinal = date.ordinal(); + let weekday = date.weekday(); + let week_from_sun = (ordinal as i32 - weekday.num_days_from_sunday() as i32 + 7) / 7; + let week_from_mon = (ordinal as i32 - weekday.num_days_from_monday() as i32 + 7) / 7; + self.ordinal.unwrap_or(ordinal) == ordinal + && self.week_from_sun.map_or(week_from_sun, |v| v as i32) == week_from_sun + && self.week_from_mon.map_or(week_from_mon, |v| v as i32) == week_from_mon + }; + + // test several possibilities. + // tries to construct a full `NaiveDate` as much as possible, then verifies that + // it is consistent with other given fields. + let (verified, parsed_date) = match (given_year, given_isoyear, self) { + (Some(year), _, &Parsed { month: Some(month), day: Some(day), .. }) => { + // year, month, day + let date = NaiveDate::from_ymd_opt(year, month, day).ok_or(OUT_OF_RANGE)?; + (verify_isoweekdate(date) && verify_ordinal(date), date) + } + + (Some(year), _, &Parsed { ordinal: Some(ordinal), .. }) => { + // year, day of the year + let date = NaiveDate::from_yo_opt(year, ordinal).ok_or(OUT_OF_RANGE)?; + (verify_ymd(date) && verify_isoweekdate(date) && verify_ordinal(date), date) + } + + ( + Some(year), + _, + &Parsed { week_from_sun: Some(week_from_sun), weekday: Some(weekday), .. }, + ) => { + // year, week (starting at 1st Sunday), day of the week + let newyear = NaiveDate::from_yo_opt(year, 1).ok_or(OUT_OF_RANGE)?; + let firstweek = match newyear.weekday() { + Weekday::Sun => 0, + Weekday::Mon => 6, + Weekday::Tue => 5, + Weekday::Wed => 4, + Weekday::Thu => 3, + Weekday::Fri => 2, + Weekday::Sat => 1, + }; + + // `firstweek+1`-th day of January is the beginning of the week 1. + if week_from_sun > 53 { + return Err(OUT_OF_RANGE); + } // can it overflow? + let ndays = firstweek + + (week_from_sun as i32 - 1) * 7 + + weekday.num_days_from_sunday() as i32; + let date = newyear + .checked_add_signed(OldDuration::days(i64::from(ndays))) + .ok_or(OUT_OF_RANGE)?; + if date.year() != year { + return Err(OUT_OF_RANGE); + } // early exit for correct error + + (verify_ymd(date) && verify_isoweekdate(date) && verify_ordinal(date), date) + } + + ( + Some(year), + _, + &Parsed { week_from_mon: Some(week_from_mon), weekday: Some(weekday), .. }, + ) => { + // year, week (starting at 1st Monday), day of the week + let newyear = NaiveDate::from_yo_opt(year, 1).ok_or(OUT_OF_RANGE)?; + let firstweek = match newyear.weekday() { + Weekday::Sun => 1, + Weekday::Mon => 0, + Weekday::Tue => 6, + Weekday::Wed => 5, + Weekday::Thu => 4, + Weekday::Fri => 3, + Weekday::Sat => 2, + }; + + // `firstweek+1`-th day of January is the beginning of the week 1. + if week_from_mon > 53 { + return Err(OUT_OF_RANGE); + } // can it overflow? + let ndays = firstweek + + (week_from_mon as i32 - 1) * 7 + + weekday.num_days_from_monday() as i32; + let date = newyear + .checked_add_signed(OldDuration::days(i64::from(ndays))) + .ok_or(OUT_OF_RANGE)?; + if date.year() != year { + return Err(OUT_OF_RANGE); + } // early exit for correct error + + (verify_ymd(date) && verify_isoweekdate(date) && verify_ordinal(date), date) + } + + (_, Some(isoyear), &Parsed { isoweek: Some(isoweek), weekday: Some(weekday), .. }) => { + // ISO year, week, day of the week + let date = NaiveDate::from_isoywd_opt(isoyear, isoweek, weekday); + let date = date.ok_or(OUT_OF_RANGE)?; + (verify_ymd(date) && verify_ordinal(date), date) + } + + (_, _, _) => return Err(NOT_ENOUGH), + }; + + if verified { + Ok(parsed_date) + } else { + Err(IMPOSSIBLE) + } + } + + /// Returns a parsed naive time out of given fields. + /// + /// This method is able to determine the time from given subset of fields: + /// + /// - Hour, minute. (second and nanosecond assumed to be 0) + /// - Hour, minute, second. (nanosecond assumed to be 0) + /// - Hour, minute, second, nanosecond. + /// + /// It is able to handle leap seconds when given second is 60. + pub fn to_naive_time(&self) -> ParseResult { + let hour_div_12 = match self.hour_div_12 { + Some(v @ 0..=1) => v, + Some(_) => return Err(OUT_OF_RANGE), + None => return Err(NOT_ENOUGH), + }; + let hour_mod_12 = match self.hour_mod_12 { + Some(v @ 0..=11) => v, + Some(_) => return Err(OUT_OF_RANGE), + None => return Err(NOT_ENOUGH), + }; + let hour = hour_div_12 * 12 + hour_mod_12; + + let minute = match self.minute { + Some(v @ 0..=59) => v, + Some(_) => return Err(OUT_OF_RANGE), + None => return Err(NOT_ENOUGH), + }; + + // we allow omitting seconds or nanoseconds, but they should be in the range. + let (second, mut nano) = match self.second.unwrap_or(0) { + v @ 0..=59 => (v, 0), + 60 => (59, 1_000_000_000), + _ => return Err(OUT_OF_RANGE), + }; + nano += match self.nanosecond { + Some(v @ 0..=999_999_999) if self.second.is_some() => v, + Some(0..=999_999_999) => return Err(NOT_ENOUGH), // second is missing + Some(_) => return Err(OUT_OF_RANGE), + None => 0, + }; + + NaiveTime::from_hms_nano_opt(hour, minute, second, nano).ok_or(OUT_OF_RANGE) + } + + /// Returns a parsed naive date and time out of given fields, + /// except for the [`offset`](#structfield.offset) field (assumed to have a given value). + /// This is required for parsing a local time or other known-timezone inputs. + /// + /// This method is able to determine the combined date and time + /// from date and time fields or a single [`timestamp`](#structfield.timestamp) field. + /// Either way those fields have to be consistent to each other. + pub fn to_naive_datetime_with_offset(&self, offset: i32) -> ParseResult { + let date = self.to_naive_date(); + let time = self.to_naive_time(); + if let (Ok(date), Ok(time)) = (date, time) { + let datetime = date.and_time(time); + + // verify the timestamp field if any + // the following is safe, `timestamp` is very limited in range + let timestamp = datetime.timestamp() - i64::from(offset); + if let Some(given_timestamp) = self.timestamp { + // if `datetime` represents a leap second, it might be off by one second. + if given_timestamp != timestamp + && !(datetime.nanosecond() >= 1_000_000_000 && given_timestamp == timestamp + 1) + { + return Err(IMPOSSIBLE); + } + } + + Ok(datetime) + } else if let Some(timestamp) = self.timestamp { + use super::ParseError as PE; + use super::ParseErrorKind::{Impossible, OutOfRange}; + + // if date and time is problematic already, there is no point proceeding. + // we at least try to give a correct error though. + match (date, time) { + (Err(PE(OutOfRange)), _) | (_, Err(PE(OutOfRange))) => return Err(OUT_OF_RANGE), + (Err(PE(Impossible)), _) | (_, Err(PE(Impossible))) => return Err(IMPOSSIBLE), + (_, _) => {} // one of them is insufficient + } + + // reconstruct date and time fields from timestamp + let ts = timestamp.checked_add(i64::from(offset)).ok_or(OUT_OF_RANGE)?; + let datetime = NaiveDateTime::from_timestamp_opt(ts, 0); + let mut datetime = datetime.ok_or(OUT_OF_RANGE)?; + + // fill year, ordinal, hour, minute and second fields from timestamp. + // if existing fields are consistent, this will allow the full date/time reconstruction. + let mut parsed = self.clone(); + if parsed.second == Some(60) { + // `datetime.second()` cannot be 60, so this is the only case for a leap second. + match datetime.second() { + // it's okay, just do not try to overwrite the existing field. + 59 => {} + // `datetime` is known to be off by one second. + 0 => { + datetime -= OldDuration::seconds(1); + } + // otherwise it is impossible. + _ => return Err(IMPOSSIBLE), + } + // ...and we have the correct candidates for other fields. + } else { + parsed.set_second(i64::from(datetime.second()))?; + } + parsed.set_year(i64::from(datetime.year()))?; + parsed.set_ordinal(i64::from(datetime.ordinal()))?; // more efficient than ymd + parsed.set_hour(i64::from(datetime.hour()))?; + parsed.set_minute(i64::from(datetime.minute()))?; + + // validate other fields (e.g. week) and return + let date = parsed.to_naive_date()?; + let time = parsed.to_naive_time()?; + Ok(date.and_time(time)) + } else { + // reproduce the previous error(s) + date?; + time?; + unreachable!() + } + } + + /// Returns a parsed fixed time zone offset out of given fields. + pub fn to_fixed_offset(&self) -> ParseResult { + self.offset.and_then(FixedOffset::east_opt).ok_or(OUT_OF_RANGE) + } + + /// Returns a parsed timezone-aware date and time out of given fields. + /// + /// This method is able to determine the combined date and time + /// from date and time fields or a single [`timestamp`](#structfield.timestamp) field, + /// plus a time zone offset. + /// Either way those fields have to be consistent to each other. + pub fn to_datetime(&self) -> ParseResult> { + let offset = self.offset.ok_or(NOT_ENOUGH)?; + let datetime = self.to_naive_datetime_with_offset(offset)?; + let offset = FixedOffset::east_opt(offset).ok_or(OUT_OF_RANGE)?; + + // this is used to prevent an overflow when calling FixedOffset::from_local_datetime + datetime + .checked_sub_signed(OldDuration::seconds(i64::from(offset.local_minus_utc()))) + .ok_or(OUT_OF_RANGE)?; + + match offset.from_local_datetime(&datetime) { + LocalResult::None => Err(IMPOSSIBLE), + LocalResult::Single(t) => Ok(t), + LocalResult::Ambiguous(..) => Err(NOT_ENOUGH), + } + } + + /// Returns a parsed timezone-aware date and time out of given fields, + /// with an additional `TimeZone` used to interpret and validate the local date. + /// + /// This method is able to determine the combined date and time + /// from date and time fields or a single [`timestamp`](#structfield.timestamp) field, + /// plus a time zone offset. + /// Either way those fields have to be consistent to each other. + /// If parsed fields include an UTC offset, it also has to be consistent to + /// [`offset`](#structfield.offset). + pub fn to_datetime_with_timezone(&self, tz: &Tz) -> ParseResult> { + // if we have `timestamp` specified, guess an offset from that. + let mut guessed_offset = 0; + if let Some(timestamp) = self.timestamp { + // make a naive `DateTime` from given timestamp and (if any) nanosecond. + // an empty `nanosecond` is always equal to zero, so missing nanosecond is fine. + let nanosecond = self.nanosecond.unwrap_or(0); + let dt = NaiveDateTime::from_timestamp_opt(timestamp, nanosecond); + let dt = dt.ok_or(OUT_OF_RANGE)?; + guessed_offset = tz.offset_from_utc_datetime(&dt).fix().local_minus_utc(); + } + + // checks if the given `DateTime` has a consistent `Offset` with given `self.offset`. + let check_offset = |dt: &DateTime| { + if let Some(offset) = self.offset { + dt.offset().fix().local_minus_utc() == offset + } else { + true + } + }; + + // `guessed_offset` should be correct when `self.timestamp` is given. + // it will be 0 otherwise, but this is fine as the algorithm ignores offset for that case. + let datetime = self.to_naive_datetime_with_offset(guessed_offset)?; + match tz.from_local_datetime(&datetime) { + LocalResult::None => Err(IMPOSSIBLE), + LocalResult::Single(t) => { + if check_offset(&t) { + Ok(t) + } else { + Err(IMPOSSIBLE) + } + } + LocalResult::Ambiguous(min, max) => { + // try to disambiguate two possible local dates by offset. + match (check_offset(&min), check_offset(&max)) { + (false, false) => Err(IMPOSSIBLE), + (false, true) => Ok(max), + (true, false) => Ok(min), + (true, true) => Err(NOT_ENOUGH), + } + } + } + } +} + +#[cfg(test)] +mod tests { + use super::super::{IMPOSSIBLE, NOT_ENOUGH, OUT_OF_RANGE}; + use super::Parsed; + use crate::naive::{NaiveDate, NaiveTime}; + use crate::offset::{FixedOffset, TimeZone, Utc}; + use crate::Datelike; + use crate::Weekday::*; + + #[test] + fn test_parsed_set_fields() { + // year*, isoyear* + let mut p = Parsed::new(); + assert_eq!(p.set_year(1987), Ok(())); + assert_eq!(p.set_year(1986), Err(IMPOSSIBLE)); + assert_eq!(p.set_year(1988), Err(IMPOSSIBLE)); + assert_eq!(p.set_year(1987), Ok(())); + assert_eq!(p.set_year_div_100(20), Ok(())); // independent to `year` + assert_eq!(p.set_year_div_100(21), Err(IMPOSSIBLE)); + assert_eq!(p.set_year_div_100(19), Err(IMPOSSIBLE)); + assert_eq!(p.set_year_mod_100(37), Ok(())); // ditto + assert_eq!(p.set_year_mod_100(38), Err(IMPOSSIBLE)); + assert_eq!(p.set_year_mod_100(36), Err(IMPOSSIBLE)); + + let mut p = Parsed::new(); + assert_eq!(p.set_year(0), Ok(())); + assert_eq!(p.set_year_div_100(0), Ok(())); + assert_eq!(p.set_year_mod_100(0), Ok(())); + + let mut p = Parsed::new(); + assert_eq!(p.set_year_div_100(-1), Err(OUT_OF_RANGE)); + assert_eq!(p.set_year_mod_100(-1), Err(OUT_OF_RANGE)); + assert_eq!(p.set_year(-1), Ok(())); + assert_eq!(p.set_year(-2), Err(IMPOSSIBLE)); + assert_eq!(p.set_year(0), Err(IMPOSSIBLE)); + + let mut p = Parsed::new(); + assert_eq!(p.set_year_div_100(0x1_0000_0008), Err(OUT_OF_RANGE)); + assert_eq!(p.set_year_div_100(8), Ok(())); + assert_eq!(p.set_year_div_100(0x1_0000_0008), Err(OUT_OF_RANGE)); + + // month, week*, isoweek, ordinal, day, minute, second, nanosecond, offset + let mut p = Parsed::new(); + assert_eq!(p.set_month(7), Ok(())); + assert_eq!(p.set_month(1), Err(IMPOSSIBLE)); + assert_eq!(p.set_month(6), Err(IMPOSSIBLE)); + assert_eq!(p.set_month(8), Err(IMPOSSIBLE)); + assert_eq!(p.set_month(12), Err(IMPOSSIBLE)); + + let mut p = Parsed::new(); + assert_eq!(p.set_month(8), Ok(())); + assert_eq!(p.set_month(0x1_0000_0008), Err(OUT_OF_RANGE)); + + // hour + let mut p = Parsed::new(); + assert_eq!(p.set_hour(12), Ok(())); + assert_eq!(p.set_hour(11), Err(IMPOSSIBLE)); + assert_eq!(p.set_hour(13), Err(IMPOSSIBLE)); + assert_eq!(p.set_hour(12), Ok(())); + assert_eq!(p.set_ampm(false), Err(IMPOSSIBLE)); + assert_eq!(p.set_ampm(true), Ok(())); + assert_eq!(p.set_hour12(12), Ok(())); + assert_eq!(p.set_hour12(0), Err(OUT_OF_RANGE)); // requires canonical representation + assert_eq!(p.set_hour12(1), Err(IMPOSSIBLE)); + assert_eq!(p.set_hour12(11), Err(IMPOSSIBLE)); + + let mut p = Parsed::new(); + assert_eq!(p.set_ampm(true), Ok(())); + assert_eq!(p.set_hour12(7), Ok(())); + assert_eq!(p.set_hour(7), Err(IMPOSSIBLE)); + assert_eq!(p.set_hour(18), Err(IMPOSSIBLE)); + assert_eq!(p.set_hour(19), Ok(())); + + // timestamp + let mut p = Parsed::new(); + assert_eq!(p.set_timestamp(1_234_567_890), Ok(())); + assert_eq!(p.set_timestamp(1_234_567_889), Err(IMPOSSIBLE)); + assert_eq!(p.set_timestamp(1_234_567_891), Err(IMPOSSIBLE)); + } + + #[test] + fn test_parsed_to_naive_date() { + macro_rules! parse { + ($($k:ident: $v:expr),*) => ( + Parsed { $($k: Some($v),)* ..Parsed::new() }.to_naive_date() + ) + } + + let ymd = |y, m, d| Ok(NaiveDate::from_ymd_opt(y, m, d).unwrap()); + + // ymd: omission of fields + assert_eq!(parse!(), Err(NOT_ENOUGH)); + assert_eq!(parse!(year: 1984), Err(NOT_ENOUGH)); + assert_eq!(parse!(year: 1984, month: 1), Err(NOT_ENOUGH)); + assert_eq!(parse!(year: 1984, month: 1, day: 2), ymd(1984, 1, 2)); + assert_eq!(parse!(year: 1984, day: 2), Err(NOT_ENOUGH)); + assert_eq!(parse!(year_div_100: 19), Err(NOT_ENOUGH)); + assert_eq!(parse!(year_div_100: 19, year_mod_100: 84), Err(NOT_ENOUGH)); + assert_eq!(parse!(year_div_100: 19, year_mod_100: 84, month: 1), Err(NOT_ENOUGH)); + assert_eq!(parse!(year_div_100: 19, year_mod_100: 84, month: 1, day: 2), ymd(1984, 1, 2)); + assert_eq!(parse!(year_div_100: 19, year_mod_100: 84, day: 2), Err(NOT_ENOUGH)); + assert_eq!(parse!(year_div_100: 19, month: 1, day: 2), Err(NOT_ENOUGH)); + assert_eq!(parse!(year_mod_100: 70, month: 1, day: 2), ymd(1970, 1, 2)); + assert_eq!(parse!(year_mod_100: 69, month: 1, day: 2), ymd(2069, 1, 2)); + + // ymd: out-of-range conditions + assert_eq!(parse!(year_div_100: 19, year_mod_100: 84, month: 2, day: 29), ymd(1984, 2, 29)); + assert_eq!( + parse!(year_div_100: 19, year_mod_100: 83, month: 2, day: 29), + Err(OUT_OF_RANGE) + ); + assert_eq!( + parse!(year_div_100: 19, year_mod_100: 83, month: 13, day: 1), + Err(OUT_OF_RANGE) + ); + assert_eq!( + parse!(year_div_100: 19, year_mod_100: 83, month: 12, day: 31), + ymd(1983, 12, 31) + ); + assert_eq!( + parse!(year_div_100: 19, year_mod_100: 83, month: 12, day: 32), + Err(OUT_OF_RANGE) + ); + assert_eq!( + parse!(year_div_100: 19, year_mod_100: 83, month: 12, day: 0), + Err(OUT_OF_RANGE) + ); + assert_eq!( + parse!(year_div_100: 19, year_mod_100: 100, month: 1, day: 1), + Err(OUT_OF_RANGE) + ); + assert_eq!(parse!(year_div_100: 19, year_mod_100: -1, month: 1, day: 1), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year_div_100: 0, year_mod_100: 0, month: 1, day: 1), ymd(0, 1, 1)); + assert_eq!(parse!(year_div_100: -1, year_mod_100: 42, month: 1, day: 1), Err(OUT_OF_RANGE)); + let max_year = NaiveDate::MAX.year(); + assert_eq!( + parse!(year_div_100: max_year / 100, + year_mod_100: max_year % 100, month: 1, day: 1), + ymd(max_year, 1, 1) + ); + assert_eq!( + parse!(year_div_100: (max_year + 1) / 100, + year_mod_100: (max_year + 1) % 100, month: 1, day: 1), + Err(OUT_OF_RANGE) + ); + + // ymd: conflicting inputs + assert_eq!(parse!(year: 1984, year_div_100: 19, month: 1, day: 1), ymd(1984, 1, 1)); + assert_eq!(parse!(year: 1984, year_div_100: 20, month: 1, day: 1), Err(IMPOSSIBLE)); + assert_eq!(parse!(year: 1984, year_mod_100: 84, month: 1, day: 1), ymd(1984, 1, 1)); + assert_eq!(parse!(year: 1984, year_mod_100: 83, month: 1, day: 1), Err(IMPOSSIBLE)); + assert_eq!( + parse!(year: 1984, year_div_100: 19, year_mod_100: 84, month: 1, day: 1), + ymd(1984, 1, 1) + ); + assert_eq!( + parse!(year: 1984, year_div_100: 18, year_mod_100: 94, month: 1, day: 1), + Err(IMPOSSIBLE) + ); + assert_eq!( + parse!(year: 1984, year_div_100: 18, year_mod_100: 184, month: 1, day: 1), + Err(OUT_OF_RANGE) + ); + assert_eq!( + parse!(year: -1, year_div_100: 0, year_mod_100: -1, month: 1, day: 1), + Err(OUT_OF_RANGE) + ); + assert_eq!( + parse!(year: -1, year_div_100: -1, year_mod_100: 99, month: 1, day: 1), + Err(OUT_OF_RANGE) + ); + assert_eq!(parse!(year: -1, year_div_100: 0, month: 1, day: 1), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: -1, year_mod_100: 99, month: 1, day: 1), Err(OUT_OF_RANGE)); + + // weekdates + assert_eq!(parse!(year: 2000, week_from_mon: 0), Err(NOT_ENOUGH)); + assert_eq!(parse!(year: 2000, week_from_sun: 0), Err(NOT_ENOUGH)); + assert_eq!(parse!(year: 2000, weekday: Sun), Err(NOT_ENOUGH)); + assert_eq!(parse!(year: 2000, week_from_mon: 0, weekday: Fri), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2000, week_from_sun: 0, weekday: Fri), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2000, week_from_mon: 0, weekday: Sat), ymd(2000, 1, 1)); + assert_eq!(parse!(year: 2000, week_from_sun: 0, weekday: Sat), ymd(2000, 1, 1)); + assert_eq!(parse!(year: 2000, week_from_mon: 0, weekday: Sun), ymd(2000, 1, 2)); + assert_eq!(parse!(year: 2000, week_from_sun: 1, weekday: Sun), ymd(2000, 1, 2)); + assert_eq!(parse!(year: 2000, week_from_mon: 1, weekday: Mon), ymd(2000, 1, 3)); + assert_eq!(parse!(year: 2000, week_from_sun: 1, weekday: Mon), ymd(2000, 1, 3)); + assert_eq!(parse!(year: 2000, week_from_mon: 1, weekday: Sat), ymd(2000, 1, 8)); + assert_eq!(parse!(year: 2000, week_from_sun: 1, weekday: Sat), ymd(2000, 1, 8)); + assert_eq!(parse!(year: 2000, week_from_mon: 1, weekday: Sun), ymd(2000, 1, 9)); + assert_eq!(parse!(year: 2000, week_from_sun: 2, weekday: Sun), ymd(2000, 1, 9)); + assert_eq!(parse!(year: 2000, week_from_mon: 2, weekday: Mon), ymd(2000, 1, 10)); + assert_eq!(parse!(year: 2000, week_from_sun: 52, weekday: Sat), ymd(2000, 12, 30)); + assert_eq!(parse!(year: 2000, week_from_sun: 53, weekday: Sun), ymd(2000, 12, 31)); + assert_eq!(parse!(year: 2000, week_from_sun: 53, weekday: Mon), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2000, week_from_sun: 0xffffffff, weekday: Mon), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2006, week_from_sun: 0, weekday: Sat), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2006, week_from_sun: 1, weekday: Sun), ymd(2006, 1, 1)); + + // weekdates: conflicting inputs + assert_eq!( + parse!(year: 2000, week_from_mon: 1, week_from_sun: 1, weekday: Sat), + ymd(2000, 1, 8) + ); + assert_eq!( + parse!(year: 2000, week_from_mon: 1, week_from_sun: 2, weekday: Sun), + ymd(2000, 1, 9) + ); + assert_eq!( + parse!(year: 2000, week_from_mon: 1, week_from_sun: 1, weekday: Sun), + Err(IMPOSSIBLE) + ); + assert_eq!( + parse!(year: 2000, week_from_mon: 2, week_from_sun: 2, weekday: Sun), + Err(IMPOSSIBLE) + ); + + // ISO weekdates + assert_eq!(parse!(isoyear: 2004, isoweek: 53), Err(NOT_ENOUGH)); + assert_eq!(parse!(isoyear: 2004, isoweek: 53, weekday: Fri), ymd(2004, 12, 31)); + assert_eq!(parse!(isoyear: 2004, isoweek: 53, weekday: Sat), ymd(2005, 1, 1)); + assert_eq!(parse!(isoyear: 2004, isoweek: 0xffffffff, weekday: Sat), Err(OUT_OF_RANGE)); + assert_eq!(parse!(isoyear: 2005, isoweek: 0, weekday: Thu), Err(OUT_OF_RANGE)); + assert_eq!(parse!(isoyear: 2005, isoweek: 5, weekday: Thu), ymd(2005, 2, 3)); + assert_eq!(parse!(isoyear: 2005, weekday: Thu), Err(NOT_ENOUGH)); + + // year and ordinal + assert_eq!(parse!(ordinal: 123), Err(NOT_ENOUGH)); + assert_eq!(parse!(year: 2000, ordinal: 0), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2000, ordinal: 1), ymd(2000, 1, 1)); + assert_eq!(parse!(year: 2000, ordinal: 60), ymd(2000, 2, 29)); + assert_eq!(parse!(year: 2000, ordinal: 61), ymd(2000, 3, 1)); + assert_eq!(parse!(year: 2000, ordinal: 366), ymd(2000, 12, 31)); + assert_eq!(parse!(year: 2000, ordinal: 367), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2000, ordinal: 0xffffffff), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2100, ordinal: 0), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2100, ordinal: 1), ymd(2100, 1, 1)); + assert_eq!(parse!(year: 2100, ordinal: 59), ymd(2100, 2, 28)); + assert_eq!(parse!(year: 2100, ordinal: 60), ymd(2100, 3, 1)); + assert_eq!(parse!(year: 2100, ordinal: 365), ymd(2100, 12, 31)); + assert_eq!(parse!(year: 2100, ordinal: 366), Err(OUT_OF_RANGE)); + assert_eq!(parse!(year: 2100, ordinal: 0xffffffff), Err(OUT_OF_RANGE)); + + // more complex cases + assert_eq!( + parse!(year: 2014, month: 12, day: 31, ordinal: 365, isoyear: 2015, isoweek: 1, + week_from_sun: 52, week_from_mon: 52, weekday: Wed), + ymd(2014, 12, 31) + ); + assert_eq!( + parse!(year: 2014, month: 12, ordinal: 365, isoyear: 2015, isoweek: 1, + week_from_sun: 52, week_from_mon: 52), + ymd(2014, 12, 31) + ); + assert_eq!( + parse!(year: 2014, month: 12, day: 31, ordinal: 365, isoyear: 2014, isoweek: 53, + week_from_sun: 52, week_from_mon: 52, weekday: Wed), + Err(IMPOSSIBLE) + ); // no ISO week date 2014-W53-3 + assert_eq!( + parse!(year: 2012, isoyear: 2015, isoweek: 1, + week_from_sun: 52, week_from_mon: 52), + Err(NOT_ENOUGH) + ); // ambiguous (2014-12-29, 2014-12-30, 2014-12-31) + assert_eq!(parse!(year_div_100: 20, isoyear_mod_100: 15, ordinal: 366), Err(NOT_ENOUGH)); + // technically unique (2014-12-31) but Chrono gives up + } + + #[test] + fn test_parsed_to_naive_time() { + macro_rules! parse { + ($($k:ident: $v:expr),*) => ( + Parsed { $($k: Some($v),)* ..Parsed::new() }.to_naive_time() + ) + } + + let hms = |h, m, s| Ok(NaiveTime::from_hms_opt(h, m, s).unwrap()); + let hmsn = |h, m, s, n| Ok(NaiveTime::from_hms_nano_opt(h, m, s, n).unwrap()); + + // omission of fields + assert_eq!(parse!(), Err(NOT_ENOUGH)); + assert_eq!(parse!(hour_div_12: 0), Err(NOT_ENOUGH)); + assert_eq!(parse!(hour_div_12: 0, hour_mod_12: 1), Err(NOT_ENOUGH)); + assert_eq!(parse!(hour_div_12: 0, hour_mod_12: 1, minute: 23), hms(1, 23, 0)); + assert_eq!(parse!(hour_div_12: 0, hour_mod_12: 1, minute: 23, second: 45), hms(1, 23, 45)); + assert_eq!( + parse!(hour_div_12: 0, hour_mod_12: 1, minute: 23, second: 45, + nanosecond: 678_901_234), + hmsn(1, 23, 45, 678_901_234) + ); + assert_eq!(parse!(hour_div_12: 1, hour_mod_12: 11, minute: 45, second: 6), hms(23, 45, 6)); + assert_eq!(parse!(hour_mod_12: 1, minute: 23), Err(NOT_ENOUGH)); + assert_eq!( + parse!(hour_div_12: 0, hour_mod_12: 1, minute: 23, nanosecond: 456_789_012), + Err(NOT_ENOUGH) + ); + + // out-of-range conditions + assert_eq!(parse!(hour_div_12: 2, hour_mod_12: 0, minute: 0), Err(OUT_OF_RANGE)); + assert_eq!(parse!(hour_div_12: 1, hour_mod_12: 12, minute: 0), Err(OUT_OF_RANGE)); + assert_eq!(parse!(hour_div_12: 0, hour_mod_12: 1, minute: 60), Err(OUT_OF_RANGE)); + assert_eq!( + parse!(hour_div_12: 0, hour_mod_12: 1, minute: 23, second: 61), + Err(OUT_OF_RANGE) + ); + assert_eq!( + parse!(hour_div_12: 0, hour_mod_12: 1, minute: 23, second: 34, + nanosecond: 1_000_000_000), + Err(OUT_OF_RANGE) + ); + + // leap seconds + assert_eq!( + parse!(hour_div_12: 0, hour_mod_12: 1, minute: 23, second: 60), + hmsn(1, 23, 59, 1_000_000_000) + ); + assert_eq!( + parse!(hour_div_12: 0, hour_mod_12: 1, minute: 23, second: 60, + nanosecond: 999_999_999), + hmsn(1, 23, 59, 1_999_999_999) + ); + } + + #[test] + fn test_parsed_to_naive_datetime_with_offset() { + macro_rules! parse { + (offset = $offset:expr; $($k:ident: $v:expr),*) => ( + Parsed { $($k: Some($v),)* ..Parsed::new() }.to_naive_datetime_with_offset($offset) + ); + ($($k:ident: $v:expr),*) => (parse!(offset = 0; $($k: $v),*)) + } + + let ymdhms = |y, m, d, h, n, s| { + Ok(NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap()) + }; + let ymdhmsn = |y, m, d, h, n, s, nano| { + Ok(NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_nano_opt(h, n, s, nano).unwrap()) + }; + + // omission of fields + assert_eq!(parse!(), Err(NOT_ENOUGH)); + assert_eq!( + parse!(year: 2015, month: 1, day: 30, + hour_div_12: 1, hour_mod_12: 2, minute: 38), + ymdhms(2015, 1, 30, 14, 38, 0) + ); + assert_eq!( + parse!(year: 1997, month: 1, day: 30, + hour_div_12: 1, hour_mod_12: 2, minute: 38, second: 5), + ymdhms(1997, 1, 30, 14, 38, 5) + ); + assert_eq!( + parse!(year: 2012, ordinal: 34, hour_div_12: 0, hour_mod_12: 5, + minute: 6, second: 7, nanosecond: 890_123_456), + ymdhmsn(2012, 2, 3, 5, 6, 7, 890_123_456) + ); + assert_eq!(parse!(timestamp: 0), ymdhms(1970, 1, 1, 0, 0, 0)); + assert_eq!(parse!(timestamp: 1, nanosecond: 0), ymdhms(1970, 1, 1, 0, 0, 1)); + assert_eq!(parse!(timestamp: 1, nanosecond: 1), ymdhmsn(1970, 1, 1, 0, 0, 1, 1)); + assert_eq!(parse!(timestamp: 1_420_000_000), ymdhms(2014, 12, 31, 4, 26, 40)); + assert_eq!(parse!(timestamp: -0x1_0000_0000), ymdhms(1833, 11, 24, 17, 31, 44)); + + // full fields + assert_eq!( + parse!(year: 2014, year_div_100: 20, year_mod_100: 14, month: 12, day: 31, + ordinal: 365, isoyear: 2015, isoyear_div_100: 20, isoyear_mod_100: 15, + isoweek: 1, week_from_sun: 52, week_from_mon: 52, weekday: Wed, + hour_div_12: 0, hour_mod_12: 4, minute: 26, second: 40, + nanosecond: 12_345_678, timestamp: 1_420_000_000), + ymdhmsn(2014, 12, 31, 4, 26, 40, 12_345_678) + ); + assert_eq!( + parse!(year: 2014, year_div_100: 20, year_mod_100: 14, month: 12, day: 31, + ordinal: 365, isoyear: 2015, isoyear_div_100: 20, isoyear_mod_100: 15, + isoweek: 1, week_from_sun: 52, week_from_mon: 52, weekday: Wed, + hour_div_12: 0, hour_mod_12: 4, minute: 26, second: 40, + nanosecond: 12_345_678, timestamp: 1_419_999_999), + Err(IMPOSSIBLE) + ); + assert_eq!( + parse!(offset = 32400; + year: 2014, year_div_100: 20, year_mod_100: 14, month: 12, day: 31, + ordinal: 365, isoyear: 2015, isoyear_div_100: 20, isoyear_mod_100: 15, + isoweek: 1, week_from_sun: 52, week_from_mon: 52, weekday: Wed, + hour_div_12: 0, hour_mod_12: 4, minute: 26, second: 40, + nanosecond: 12_345_678, timestamp: 1_419_967_600), + ymdhmsn(2014, 12, 31, 4, 26, 40, 12_345_678) + ); + + // more timestamps + let max_days_from_year_1970 = + NaiveDate::MAX.signed_duration_since(NaiveDate::from_ymd_opt(1970, 1, 1).unwrap()); + let year_0_from_year_1970 = NaiveDate::from_ymd_opt(0, 1, 1) + .unwrap() + .signed_duration_since(NaiveDate::from_ymd_opt(1970, 1, 1).unwrap()); + let min_days_from_year_1970 = + NaiveDate::MIN.signed_duration_since(NaiveDate::from_ymd_opt(1970, 1, 1).unwrap()); + assert_eq!( + parse!(timestamp: min_days_from_year_1970.num_seconds()), + ymdhms(NaiveDate::MIN.year(), 1, 1, 0, 0, 0) + ); + assert_eq!( + parse!(timestamp: year_0_from_year_1970.num_seconds()), + ymdhms(0, 1, 1, 0, 0, 0) + ); + assert_eq!( + parse!(timestamp: max_days_from_year_1970.num_seconds() + 86399), + ymdhms(NaiveDate::MAX.year(), 12, 31, 23, 59, 59) + ); + + // leap seconds #1: partial fields + assert_eq!(parse!(second: 59, timestamp: 1_341_100_798), Err(IMPOSSIBLE)); + assert_eq!(parse!(second: 59, timestamp: 1_341_100_799), ymdhms(2012, 6, 30, 23, 59, 59)); + assert_eq!(parse!(second: 59, timestamp: 1_341_100_800), Err(IMPOSSIBLE)); + assert_eq!( + parse!(second: 60, timestamp: 1_341_100_799), + ymdhmsn(2012, 6, 30, 23, 59, 59, 1_000_000_000) + ); + assert_eq!( + parse!(second: 60, timestamp: 1_341_100_800), + ymdhmsn(2012, 6, 30, 23, 59, 59, 1_000_000_000) + ); + assert_eq!(parse!(second: 0, timestamp: 1_341_100_800), ymdhms(2012, 7, 1, 0, 0, 0)); + assert_eq!(parse!(second: 1, timestamp: 1_341_100_800), Err(IMPOSSIBLE)); + assert_eq!(parse!(second: 60, timestamp: 1_341_100_801), Err(IMPOSSIBLE)); + + // leap seconds #2: full fields + // we need to have separate tests for them since it uses another control flow. + assert_eq!( + parse!(year: 2012, ordinal: 182, hour_div_12: 1, hour_mod_12: 11, + minute: 59, second: 59, timestamp: 1_341_100_798), + Err(IMPOSSIBLE) + ); + assert_eq!( + parse!(year: 2012, ordinal: 182, hour_div_12: 1, hour_mod_12: 11, + minute: 59, second: 59, timestamp: 1_341_100_799), + ymdhms(2012, 6, 30, 23, 59, 59) + ); + assert_eq!( + parse!(year: 2012, ordinal: 182, hour_div_12: 1, hour_mod_12: 11, + minute: 59, second: 59, timestamp: 1_341_100_800), + Err(IMPOSSIBLE) + ); + assert_eq!( + parse!(year: 2012, ordinal: 182, hour_div_12: 1, hour_mod_12: 11, + minute: 59, second: 60, timestamp: 1_341_100_799), + ymdhmsn(2012, 6, 30, 23, 59, 59, 1_000_000_000) + ); + assert_eq!( + parse!(year: 2012, ordinal: 182, hour_div_12: 1, hour_mod_12: 11, + minute: 59, second: 60, timestamp: 1_341_100_800), + ymdhmsn(2012, 6, 30, 23, 59, 59, 1_000_000_000) + ); + assert_eq!( + parse!(year: 2012, ordinal: 183, hour_div_12: 0, hour_mod_12: 0, + minute: 0, second: 0, timestamp: 1_341_100_800), + ymdhms(2012, 7, 1, 0, 0, 0) + ); + assert_eq!( + parse!(year: 2012, ordinal: 183, hour_div_12: 0, hour_mod_12: 0, + minute: 0, second: 1, timestamp: 1_341_100_800), + Err(IMPOSSIBLE) + ); + assert_eq!( + parse!(year: 2012, ordinal: 182, hour_div_12: 1, hour_mod_12: 11, + minute: 59, second: 60, timestamp: 1_341_100_801), + Err(IMPOSSIBLE) + ); + + // error codes + assert_eq!( + parse!(year: 2015, month: 1, day: 20, weekday: Tue, + hour_div_12: 2, hour_mod_12: 1, minute: 35, second: 20), + Err(OUT_OF_RANGE) + ); // `hour_div_12` is out of range + } + + #[test] + fn test_parsed_to_datetime() { + macro_rules! parse { + ($($k:ident: $v:expr),*) => ( + Parsed { $($k: Some($v),)* ..Parsed::new() }.to_datetime() + ) + } + + let ymdhmsn = |y, m, d, h, n, s, nano, off| { + Ok(FixedOffset::east_opt(off) + .unwrap() + .from_local_datetime( + &NaiveDate::from_ymd_opt(y, m, d) + .unwrap() + .and_hms_nano_opt(h, n, s, nano) + .unwrap(), + ) + .unwrap()) + }; + + assert_eq!(parse!(offset: 0), Err(NOT_ENOUGH)); + assert_eq!( + parse!(year: 2014, ordinal: 365, hour_div_12: 0, hour_mod_12: 4, + minute: 26, second: 40, nanosecond: 12_345_678), + Err(NOT_ENOUGH) + ); + assert_eq!( + parse!(year: 2014, ordinal: 365, hour_div_12: 0, hour_mod_12: 4, + minute: 26, second: 40, nanosecond: 12_345_678, offset: 0), + ymdhmsn(2014, 12, 31, 4, 26, 40, 12_345_678, 0) + ); + assert_eq!( + parse!(year: 2014, ordinal: 365, hour_div_12: 1, hour_mod_12: 1, + minute: 26, second: 40, nanosecond: 12_345_678, offset: 32400), + ymdhmsn(2014, 12, 31, 13, 26, 40, 12_345_678, 32400) + ); + assert_eq!( + parse!(year: 2014, ordinal: 365, hour_div_12: 0, hour_mod_12: 1, + minute: 42, second: 4, nanosecond: 12_345_678, offset: -9876), + ymdhmsn(2014, 12, 31, 1, 42, 4, 12_345_678, -9876) + ); + assert_eq!( + parse!(year: 2015, ordinal: 1, hour_div_12: 0, hour_mod_12: 4, + minute: 26, second: 40, nanosecond: 12_345_678, offset: 86_400), + Err(OUT_OF_RANGE) + ); // `FixedOffset` does not support such huge offset + } + + #[test] + fn test_parsed_to_datetime_with_timezone() { + macro_rules! parse { + ($tz:expr; $($k:ident: $v:expr),*) => ( + Parsed { $($k: Some($v),)* ..Parsed::new() }.to_datetime_with_timezone(&$tz) + ) + } + + // single result from ymdhms + assert_eq!( + parse!(Utc; + year: 2014, ordinal: 365, hour_div_12: 0, hour_mod_12: 4, + minute: 26, second: 40, nanosecond: 12_345_678, offset: 0), + Ok(Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2014, 12, 31) + .unwrap() + .and_hms_nano_opt(4, 26, 40, 12_345_678) + .unwrap() + ) + .unwrap()) + ); + assert_eq!( + parse!(Utc; + year: 2014, ordinal: 365, hour_div_12: 1, hour_mod_12: 1, + minute: 26, second: 40, nanosecond: 12_345_678, offset: 32400), + Err(IMPOSSIBLE) + ); + assert_eq!( + parse!(FixedOffset::east_opt(32400).unwrap(); + year: 2014, ordinal: 365, hour_div_12: 0, hour_mod_12: 4, + minute: 26, second: 40, nanosecond: 12_345_678, offset: 0), + Err(IMPOSSIBLE) + ); + assert_eq!( + parse!(FixedOffset::east_opt(32400).unwrap(); + year: 2014, ordinal: 365, hour_div_12: 1, hour_mod_12: 1, + minute: 26, second: 40, nanosecond: 12_345_678, offset: 32400), + Ok(FixedOffset::east_opt(32400) + .unwrap() + .from_local_datetime( + &NaiveDate::from_ymd_opt(2014, 12, 31) + .unwrap() + .and_hms_nano_opt(13, 26, 40, 12_345_678) + .unwrap() + ) + .unwrap()) + ); + + // single result from timestamp + assert_eq!( + parse!(Utc; timestamp: 1_420_000_000, offset: 0), + Ok(Utc.with_ymd_and_hms(2014, 12, 31, 4, 26, 40).unwrap()) + ); + assert_eq!(parse!(Utc; timestamp: 1_420_000_000, offset: 32400), Err(IMPOSSIBLE)); + assert_eq!( + parse!(FixedOffset::east_opt(32400).unwrap(); timestamp: 1_420_000_000, offset: 0), + Err(IMPOSSIBLE) + ); + assert_eq!( + parse!(FixedOffset::east_opt(32400).unwrap(); timestamp: 1_420_000_000, offset: 32400), + Ok(FixedOffset::east_opt(32400) + .unwrap() + .with_ymd_and_hms(2014, 12, 31, 13, 26, 40) + .unwrap()) + ); + + // TODO test with a variable time zone (for None and Ambiguous cases) + } +} diff --git a/javascript-engine/external/chrono/src/format/scan.rs b/javascript-engine/external/chrono/src/format/scan.rs new file mode 100644 index 0000000..263fec5 --- /dev/null +++ b/javascript-engine/external/chrono/src/format/scan.rs @@ -0,0 +1,415 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +/*! + * Various scanning routines for the parser. + */ + +#![allow(deprecated)] + +use super::{ParseResult, INVALID, OUT_OF_RANGE, TOO_SHORT}; +use crate::Weekday; + +/// Returns true when two slices are equal case-insensitively (in ASCII). +/// Assumes that the `pattern` is already converted to lower case. +fn equals(s: &str, pattern: &str) -> bool { + let mut xs = s.as_bytes().iter().map(|&c| match c { + b'A'..=b'Z' => c + 32, + _ => c, + }); + let mut ys = pattern.as_bytes().iter().cloned(); + loop { + match (xs.next(), ys.next()) { + (None, None) => return true, + (None, _) | (_, None) => return false, + (Some(x), Some(y)) if x != y => return false, + _ => (), + } + } +} + +/// Tries to parse the non-negative number from `min` to `max` digits. +/// +/// The absence of digits at all is an unconditional error. +/// More than `max` digits are consumed up to the first `max` digits. +/// Any number that does not fit in `i64` is an error. +#[inline] +pub(super) fn number(s: &str, min: usize, max: usize) -> ParseResult<(&str, i64)> { + assert!(min <= max); + + // We are only interested in ascii numbers, so we can work with the `str` as bytes. We stop on + // the first non-numeric byte, which may be another ascii character or beginning of multi-byte + // UTF-8 character. + let bytes = s.as_bytes(); + if bytes.len() < min { + return Err(TOO_SHORT); + } + + let mut n = 0i64; + for (i, c) in bytes.iter().take(max).cloned().enumerate() { + // cloned() = copied() + if !(b'0'..=b'9').contains(&c) { + if i < min { + return Err(INVALID); + } else { + return Ok((&s[i..], n)); + } + } + + n = match n.checked_mul(10).and_then(|n| n.checked_add((c - b'0') as i64)) { + Some(n) => n, + None => return Err(OUT_OF_RANGE), + }; + } + + Ok((&s[core::cmp::min(max, bytes.len())..], n)) +} + +/// Tries to consume at least one digits as a fractional second. +/// Returns the number of whole nanoseconds (0--999,999,999). +pub(super) fn nanosecond(s: &str) -> ParseResult<(&str, i64)> { + // record the number of digits consumed for later scaling. + let origlen = s.len(); + let (s, v) = number(s, 1, 9)?; + let consumed = origlen - s.len(); + + // scale the number accordingly. + static SCALE: [i64; 10] = + [0, 100_000_000, 10_000_000, 1_000_000, 100_000, 10_000, 1_000, 100, 10, 1]; + let v = v.checked_mul(SCALE[consumed]).ok_or(OUT_OF_RANGE)?; + + // if there are more than 9 digits, skip next digits. + let s = s.trim_left_matches(|c: char| ('0'..='9').contains(&c)); + + Ok((s, v)) +} + +/// Tries to consume a fixed number of digits as a fractional second. +/// Returns the number of whole nanoseconds (0--999,999,999). +pub(super) fn nanosecond_fixed(s: &str, digits: usize) -> ParseResult<(&str, i64)> { + // record the number of digits consumed for later scaling. + let (s, v) = number(s, digits, digits)?; + + // scale the number accordingly. + static SCALE: [i64; 10] = + [0, 100_000_000, 10_000_000, 1_000_000, 100_000, 10_000, 1_000, 100, 10, 1]; + let v = v.checked_mul(SCALE[digits]).ok_or(OUT_OF_RANGE)?; + + Ok((s, v)) +} + +/// Tries to parse the month index (0 through 11) with the first three ASCII letters. +pub(super) fn short_month0(s: &str) -> ParseResult<(&str, u8)> { + if s.len() < 3 { + return Err(TOO_SHORT); + } + let buf = s.as_bytes(); + let month0 = match (buf[0] | 32, buf[1] | 32, buf[2] | 32) { + (b'j', b'a', b'n') => 0, + (b'f', b'e', b'b') => 1, + (b'm', b'a', b'r') => 2, + (b'a', b'p', b'r') => 3, + (b'm', b'a', b'y') => 4, + (b'j', b'u', b'n') => 5, + (b'j', b'u', b'l') => 6, + (b'a', b'u', b'g') => 7, + (b's', b'e', b'p') => 8, + (b'o', b'c', b't') => 9, + (b'n', b'o', b'v') => 10, + (b'd', b'e', b'c') => 11, + _ => return Err(INVALID), + }; + Ok((&s[3..], month0)) +} + +/// Tries to parse the weekday with the first three ASCII letters. +pub(super) fn short_weekday(s: &str) -> ParseResult<(&str, Weekday)> { + if s.len() < 3 { + return Err(TOO_SHORT); + } + let buf = s.as_bytes(); + let weekday = match (buf[0] | 32, buf[1] | 32, buf[2] | 32) { + (b'm', b'o', b'n') => Weekday::Mon, + (b't', b'u', b'e') => Weekday::Tue, + (b'w', b'e', b'd') => Weekday::Wed, + (b't', b'h', b'u') => Weekday::Thu, + (b'f', b'r', b'i') => Weekday::Fri, + (b's', b'a', b't') => Weekday::Sat, + (b's', b'u', b'n') => Weekday::Sun, + _ => return Err(INVALID), + }; + Ok((&s[3..], weekday)) +} + +/// Tries to parse the month index (0 through 11) with short or long month names. +/// It prefers long month names to short month names when both are possible. +pub(super) fn short_or_long_month0(s: &str) -> ParseResult<(&str, u8)> { + // lowercased month names, minus first three chars + static LONG_MONTH_SUFFIXES: [&str; 12] = + ["uary", "ruary", "ch", "il", "", "e", "y", "ust", "tember", "ober", "ember", "ember"]; + + let (mut s, month0) = short_month0(s)?; + + // tries to consume the suffix if possible + let suffix = LONG_MONTH_SUFFIXES[month0 as usize]; + if s.len() >= suffix.len() && equals(&s[..suffix.len()], suffix) { + s = &s[suffix.len()..]; + } + + Ok((s, month0)) +} + +/// Tries to parse the weekday with short or long weekday names. +/// It prefers long weekday names to short weekday names when both are possible. +pub(super) fn short_or_long_weekday(s: &str) -> ParseResult<(&str, Weekday)> { + // lowercased weekday names, minus first three chars + static LONG_WEEKDAY_SUFFIXES: [&str; 7] = + ["day", "sday", "nesday", "rsday", "day", "urday", "day"]; + + let (mut s, weekday) = short_weekday(s)?; + + // tries to consume the suffix if possible + let suffix = LONG_WEEKDAY_SUFFIXES[weekday.num_days_from_monday() as usize]; + if s.len() >= suffix.len() && equals(&s[..suffix.len()], suffix) { + s = &s[suffix.len()..]; + } + + Ok((s, weekday)) +} + +/// Tries to consume exactly one given character. +pub(super) fn char(s: &str, c1: u8) -> ParseResult<&str> { + match s.as_bytes().first() { + Some(&c) if c == c1 => Ok(&s[1..]), + Some(_) => Err(INVALID), + None => Err(TOO_SHORT), + } +} + +/// Tries to consume one or more whitespace. +pub(super) fn space(s: &str) -> ParseResult<&str> { + let s_ = s.trim_left(); + if s_.len() < s.len() { + Ok(s_) + } else if s.is_empty() { + Err(TOO_SHORT) + } else { + Err(INVALID) + } +} + +/// Consumes any number (including zero) of colon or spaces. +pub(super) fn colon_or_space(s: &str) -> ParseResult<&str> { + Ok(s.trim_left_matches(|c: char| c == ':' || c.is_whitespace())) +} + +/// Tries to parse `[-+]\d\d` continued by `\d\d`. Return an offset in seconds if possible. +/// +/// The additional `colon` may be used to parse a mandatory or optional `:` +/// between hours and minutes, and should return either a new suffix or `Err` when parsing fails. +pub(super) fn timezone_offset(s: &str, consume_colon: F) -> ParseResult<(&str, i32)> +where + F: FnMut(&str) -> ParseResult<&str>, +{ + timezone_offset_internal(s, consume_colon, false) +} + +fn timezone_offset_internal( + mut s: &str, + mut consume_colon: F, + allow_missing_minutes: bool, +) -> ParseResult<(&str, i32)> +where + F: FnMut(&str) -> ParseResult<&str>, +{ + fn digits(s: &str) -> ParseResult<(u8, u8)> { + let b = s.as_bytes(); + if b.len() < 2 { + Err(TOO_SHORT) + } else { + Ok((b[0], b[1])) + } + } + let negative = match s.as_bytes().first() { + Some(&b'+') => false, + Some(&b'-') => true, + Some(_) => return Err(INVALID), + None => return Err(TOO_SHORT), + }; + s = &s[1..]; + + // hours (00--99) + let hours = match digits(s)? { + (h1 @ b'0'..=b'9', h2 @ b'0'..=b'9') => i32::from((h1 - b'0') * 10 + (h2 - b'0')), + _ => return Err(INVALID), + }; + s = &s[2..]; + + // colons (and possibly other separators) + s = consume_colon(s)?; + + // minutes (00--59) + // if the next two items are digits then we have to add minutes + let minutes = if let Ok(ds) = digits(s) { + match ds { + (m1 @ b'0'..=b'5', m2 @ b'0'..=b'9') => i32::from((m1 - b'0') * 10 + (m2 - b'0')), + (b'6'..=b'9', b'0'..=b'9') => return Err(OUT_OF_RANGE), + _ => return Err(INVALID), + } + } else if allow_missing_minutes { + 0 + } else { + return Err(TOO_SHORT); + }; + s = match s.len() { + len if len >= 2 => &s[2..], + len if len == 0 => s, + _ => return Err(TOO_SHORT), + }; + + let seconds = hours * 3600 + minutes * 60; + Ok((s, if negative { -seconds } else { seconds })) +} + +/// Same as `timezone_offset` but also allows for `z`/`Z` which is the same as `+00:00`. +pub(super) fn timezone_offset_zulu(s: &str, colon: F) -> ParseResult<(&str, i32)> +where + F: FnMut(&str) -> ParseResult<&str>, +{ + let bytes = s.as_bytes(); + match bytes.first() { + Some(&b'z') | Some(&b'Z') => Ok((&s[1..], 0)), + Some(&b'u') | Some(&b'U') => { + if bytes.len() >= 3 { + let (b, c) = (bytes[1], bytes[2]); + match (b | 32, c | 32) { + (b't', b'c') => Ok((&s[3..], 0)), + _ => Err(INVALID), + } + } else { + Err(INVALID) + } + } + _ => timezone_offset(s, colon), + } +} + +/// Same as `timezone_offset` but also allows for `z`/`Z` which is the same as +/// `+00:00`, and allows missing minutes entirely. +pub(super) fn timezone_offset_permissive(s: &str, colon: F) -> ParseResult<(&str, i32)> +where + F: FnMut(&str) -> ParseResult<&str>, +{ + match s.as_bytes().first() { + Some(&b'z') | Some(&b'Z') => Ok((&s[1..], 0)), + _ => timezone_offset_internal(s, colon, true), + } +} + +/// Same as `timezone_offset` but also allows for RFC 2822 legacy timezones. +/// May return `None` which indicates an insufficient offset data (i.e. `-0000`). +pub(super) fn timezone_offset_2822(s: &str) -> ParseResult<(&str, Option)> { + // tries to parse legacy time zone names + let upto = s + .as_bytes() + .iter() + .position(|&c| match c { + b'a'..=b'z' | b'A'..=b'Z' => false, + _ => true, + }) + .unwrap_or(s.len()); + if upto > 0 { + let name = &s[..upto]; + let s = &s[upto..]; + let offset_hours = |o| Ok((s, Some(o * 3600))); + if equals(name, "gmt") || equals(name, "ut") { + offset_hours(0) + } else if equals(name, "edt") { + offset_hours(-4) + } else if equals(name, "est") || equals(name, "cdt") { + offset_hours(-5) + } else if equals(name, "cst") || equals(name, "mdt") { + offset_hours(-6) + } else if equals(name, "mst") || equals(name, "pdt") { + offset_hours(-7) + } else if equals(name, "pst") { + offset_hours(-8) + } else { + Ok((s, None)) // recommended by RFC 2822: consume but treat it as -0000 + } + } else { + let (s_, offset) = timezone_offset(s, |s| Ok(s))?; + Ok((s_, Some(offset))) + } +} + +/// Tries to consume everything until next whitespace-like symbol. +/// Does not provide any offset information from the consumed data. +pub(super) fn timezone_name_skip(s: &str) -> ParseResult<(&str, ())> { + Ok((s.trim_left_matches(|c: char| !c.is_whitespace()), ())) +} + +/// Tries to consume an RFC2822 comment including preceding ` `. +/// +/// Returns the remaining string after the closing parenthesis. +pub(super) fn comment_2822(s: &str) -> ParseResult<(&str, ())> { + use CommentState::*; + + let s = s.trim_start(); + + let mut state = Start; + for (i, c) in s.bytes().enumerate() { + state = match (state, c) { + (Start, b'(') => Next(1), + (Next(1), b')') => return Ok((&s[i + 1..], ())), + (Next(depth), b'\\') => Escape(depth), + (Next(depth), b'(') => Next(depth + 1), + (Next(depth), b')') => Next(depth - 1), + (Next(depth), _) | (Escape(depth), _) => Next(depth), + _ => return Err(INVALID), + }; + } + + Err(TOO_SHORT) +} + +enum CommentState { + Start, + Next(usize), + Escape(usize), +} + +#[cfg(test)] +#[test] +fn test_rfc2822_comments() { + let testdata = [ + ("", Err(TOO_SHORT)), + (" ", Err(TOO_SHORT)), + ("x", Err(INVALID)), + ("(", Err(TOO_SHORT)), + ("()", Ok("")), + (" \r\n\t()", Ok("")), + ("() ", Ok(" ")), + ("()z", Ok("z")), + ("(x)", Ok("")), + ("(())", Ok("")), + ("((()))", Ok("")), + ("(x(x(x)x)x)", Ok("")), + ("( x ( x ( x ) x ) x )", Ok("")), + (r"(\)", Err(TOO_SHORT)), + (r"(\()", Ok("")), + (r"(\))", Ok("")), + (r"(\\)", Ok("")), + ("(()())", Ok("")), + ("( x ( x ) x ( x ) x )", Ok("")), + ]; + + for (test_in, expected) in testdata.iter() { + let actual = comment_2822(test_in).map(|(s, _)| s); + assert_eq!( + *expected, actual, + "{:?} expected to produce {:?}, but produced {:?}.", + test_in, expected, actual + ); + } +} diff --git a/javascript-engine/external/chrono/src/format/strftime.rs b/javascript-engine/external/chrono/src/format/strftime.rs new file mode 100644 index 0000000..6338194 --- /dev/null +++ b/javascript-engine/external/chrono/src/format/strftime.rs @@ -0,0 +1,712 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +/*! +`strftime`/`strptime`-inspired date and time formatting syntax. + +## Specifiers + +The following specifiers are available both to formatting and parsing. + +| Spec. | Example | Description | +|-------|----------|----------------------------------------------------------------------------| +| | | **DATE SPECIFIERS:** | +| `%Y` | `2001` | The full proleptic Gregorian year, zero-padded to 4 digits. chrono supports years from -262144 to 262143. | +| `%C` | `20` | The proleptic Gregorian year divided by 100, zero-padded to 2 digits. [^1] | +| `%y` | `01` | The proleptic Gregorian year modulo 100, zero-padded to 2 digits. [^1] | +| | | | +| `%m` | `07` | Month number (01--12), zero-padded to 2 digits. | +| `%b` | `Jul` | Abbreviated month name. Always 3 letters. | +| `%B` | `July` | Full month name. Also accepts corresponding abbreviation in parsing. | +| `%h` | `Jul` | Same as `%b`. | +| | | | +| `%d` | `08` | Day number (01--31), zero-padded to 2 digits. | +| `%e` | ` 8` | Same as `%d` but space-padded. Same as `%_d`. | +| | | | +| `%a` | `Sun` | Abbreviated weekday name. Always 3 letters. | +| `%A` | `Sunday` | Full weekday name. Also accepts corresponding abbreviation in parsing. | +| `%w` | `0` | Sunday = 0, Monday = 1, ..., Saturday = 6. | +| `%u` | `7` | Monday = 1, Tuesday = 2, ..., Sunday = 7. (ISO 8601) | +| | | | +| `%U` | `28` | Week number starting with Sunday (00--53), zero-padded to 2 digits. [^2] | +| `%W` | `27` | Same as `%U`, but week 1 starts with the first Monday in that year instead.| +| | | | +| `%G` | `2001` | Same as `%Y` but uses the year number in ISO 8601 week date. [^3] | +| `%g` | `01` | Same as `%y` but uses the year number in ISO 8601 week date. [^3] | +| `%V` | `27` | Same as `%U` but uses the week number in ISO 8601 week date (01--53). [^3] | +| | | | +| `%j` | `189` | Day of the year (001--366), zero-padded to 3 digits. | +| | | | +| `%D` | `07/08/01` | Month-day-year format. Same as `%m/%d/%y`. | +| `%x` | `07/08/01` | Locale's date representation (e.g., 12/31/99). | +| `%F` | `2001-07-08` | Year-month-day format (ISO 8601). Same as `%Y-%m-%d`. | +| `%v` | ` 8-Jul-2001` | Day-month-year format. Same as `%e-%b-%Y`. | +| | | | +| | | **TIME SPECIFIERS:** | +| `%H` | `00` | Hour number (00--23), zero-padded to 2 digits. | +| `%k` | ` 0` | Same as `%H` but space-padded. Same as `%_H`. | +| `%I` | `12` | Hour number in 12-hour clocks (01--12), zero-padded to 2 digits. | +| `%l` | `12` | Same as `%I` but space-padded. Same as `%_I`. | +| | | | +| `%P` | `am` | `am` or `pm` in 12-hour clocks. | +| `%p` | `AM` | `AM` or `PM` in 12-hour clocks. | +| | | | +| `%M` | `34` | Minute number (00--59), zero-padded to 2 digits. | +| `%S` | `60` | Second number (00--60), zero-padded to 2 digits. [^4] | +| `%f` | `026490000` | The fractional seconds (in nanoseconds) since last whole second. [^7] | +| `%.f` | `.026490`| Similar to `.%f` but left-aligned. These all consume the leading dot. [^7] | +| `%.3f`| `.026` | Similar to `.%f` but left-aligned but fixed to a length of 3. [^7] | +| `%.6f`| `.026490` | Similar to `.%f` but left-aligned but fixed to a length of 6. [^7] | +| `%.9f`| `.026490000` | Similar to `.%f` but left-aligned but fixed to a length of 9. [^7] | +| `%3f` | `026` | Similar to `%.3f` but without the leading dot. [^7] | +| `%6f` | `026490` | Similar to `%.6f` but without the leading dot. [^7] | +| `%9f` | `026490000` | Similar to `%.9f` but without the leading dot. [^7] | +| | | | +| `%R` | `00:34` | Hour-minute format. Same as `%H:%M`. | +| `%T` | `00:34:60` | Hour-minute-second format. Same as `%H:%M:%S`. | +| `%X` | `00:34:60` | Locale's time representation (e.g., 23:13:48). | +| `%r` | `12:34:60 AM` | Hour-minute-second format in 12-hour clocks. Same as `%I:%M:%S %p`. | +| | | | +| | | **TIME ZONE SPECIFIERS:** | +| `%Z` | `ACST` | Local time zone name. Skips all non-whitespace characters during parsing. [^8] | +| `%z` | `+0930` | Offset from the local time to UTC (with UTC being `+0000`). | +| `%:z` | `+09:30` | Same as `%z` but with a colon. | +|`%::z`|`+09:30:00`| Offset from the local time to UTC with seconds. | +|`%:::z`| `+09` | Offset from the local time to UTC without minutes. | +| `%#z` | `+09` | *Parsing only:* Same as `%z` but allows minutes to be missing or present. | +| | | | +| | | **DATE & TIME SPECIFIERS:** | +|`%c`|`Sun Jul 8 00:34:60 2001`|Locale's date and time (e.g., Thu Mar 3 23:05:25 2005). | +| `%+` | `2001-07-08T00:34:60.026490+09:30` | ISO 8601 / RFC 3339 date & time format. [^5] | +| | | | +| `%s` | `994518299` | UNIX timestamp, the number of seconds since 1970-01-01 00:00 UTC. [^6]| +| | | | +| | | **SPECIAL SPECIFIERS:** | +| `%t` | | Literal tab (`\t`). | +| `%n` | | Literal newline (`\n`). | +| `%%` | | Literal percent sign. | + +It is possible to override the default padding behavior of numeric specifiers `%?`. +This is not allowed for other specifiers and will result in the `BAD_FORMAT` error. + +Modifier | Description +-------- | ----------- +`%-?` | Suppresses any padding including spaces and zeroes. (e.g. `%j` = `012`, `%-j` = `12`) +`%_?` | Uses spaces as a padding. (e.g. `%j` = `012`, `%_j` = ` 12`) +`%0?` | Uses zeroes as a padding. (e.g. `%e` = ` 9`, `%0e` = `09`) + +Notes: + +[^1]: `%C`, `%y`: + This is floor division, so 100 BCE (year number -99) will print `-1` and `99` respectively. + +[^2]: `%U`: + Week 1 starts with the first Sunday in that year. + It is possible to have week 0 for days before the first Sunday. + +[^3]: `%G`, `%g`, `%V`: + Week 1 is the first week with at least 4 days in that year. + Week 0 does not exist, so this should be used with `%G` or `%g`. + +[^4]: `%S`: + It accounts for leap seconds, so `60` is possible. + +[^5]: `%+`: Same as `%Y-%m-%dT%H:%M:%S%.f%:z`, i.e. 0, 3, 6 or 9 fractional + digits for seconds and colons in the time zone offset. +
+
+ This format also supports having a `Z` or `UTC` in place of `%:z`. They + are equivalent to `+00:00`. +
+
+ Note that all `T`, `Z`, and `UTC` are parsed case-insensitively. +
+
+ The typical `strftime` implementations have different (and locale-dependent) + formats for this specifier. While Chrono's format for `%+` is far more + stable, it is best to avoid this specifier if you want to control the exact + output. + +[^6]: `%s`: + This is not padded and can be negative. + For the purpose of Chrono, it only accounts for non-leap seconds + so it slightly differs from ISO C `strftime` behavior. + +[^7]: `%f`, `%.f`, `%.3f`, `%.6f`, `%.9f`, `%3f`, `%6f`, `%9f`: +
+ The default `%f` is right-aligned and always zero-padded to 9 digits + for the compatibility with glibc and others, + so it always counts the number of nanoseconds since the last whole second. + E.g. 7ms after the last second will print `007000000`, + and parsing `7000000` will yield the same. +
+
+ The variant `%.f` is left-aligned and print 0, 3, 6 or 9 fractional digits + according to the precision. + E.g. 70ms after the last second under `%.f` will print `.070` (note: not `.07`), + and parsing `.07`, `.070000` etc. will yield the same. + Note that they can print or read nothing if the fractional part is zero or + the next character is not `.`. +
+
+ The variant `%.3f`, `%.6f` and `%.9f` are left-aligned and print 3, 6 or 9 fractional digits + according to the number preceding `f`. + E.g. 70ms after the last second under `%.3f` will print `.070` (note: not `.07`), + and parsing `.07`, `.070000` etc. will yield the same. + Note that they can read nothing if the fractional part is zero or + the next character is not `.` however will print with the specified length. +
+
+ The variant `%3f`, `%6f` and `%9f` are left-aligned and print 3, 6 or 9 fractional digits + according to the number preceding `f`, but without the leading dot. + E.g. 70ms after the last second under `%3f` will print `070` (note: not `07`), + and parsing `07`, `070000` etc. will yield the same. + Note that they can read nothing if the fractional part is zero. + +[^8]: `%Z`: + Offset will not be populated from the parsed data, nor will it be validated. + Timezone is completely ignored. Similar to the glibc `strptime` treatment of + this format code. +
+
+ It is not possible to reliably convert from an abbreviation to an offset, + for example CDT can mean either Central Daylight Time (North America) or + China Daylight Time. +*/ + +#[cfg(feature = "unstable-locales")] +extern crate alloc; + +#[cfg(feature = "unstable-locales")] +use alloc::vec::Vec; + +#[cfg(feature = "unstable-locales")] +use super::{locales, Locale}; +use super::{Fixed, InternalFixed, InternalInternal, Item, Numeric, Pad}; + +#[cfg(feature = "unstable-locales")] +type Fmt<'a> = Vec>; +#[cfg(not(feature = "unstable-locales"))] +type Fmt<'a> = &'static [Item<'static>]; + +static D_FMT: &[Item<'static>] = + &[num0!(Month), lit!("/"), num0!(Day), lit!("/"), num0!(YearMod100)]; +static D_T_FMT: &[Item<'static>] = &[ + fix!(ShortWeekdayName), + sp!(" "), + fix!(ShortMonthName), + sp!(" "), + nums!(Day), + sp!(" "), + num0!(Hour), + lit!(":"), + num0!(Minute), + lit!(":"), + num0!(Second), + sp!(" "), + num0!(Year), +]; +static T_FMT: &[Item<'static>] = &[num0!(Hour), lit!(":"), num0!(Minute), lit!(":"), num0!(Second)]; + +/// Parsing iterator for `strftime`-like format strings. +#[derive(Clone, Debug)] +pub struct StrftimeItems<'a> { + /// Remaining portion of the string. + remainder: &'a str, + /// If the current specifier is composed of multiple formatting items (e.g. `%+`), + /// parser refers to the statically reconstructed slice of them. + /// If `recons` is not empty they have to be returned earlier than the `remainder`. + recons: Fmt<'a>, + /// Date format + d_fmt: Fmt<'a>, + /// Date and time format + d_t_fmt: Fmt<'a>, + /// Time format + t_fmt: Fmt<'a>, +} + +impl<'a> StrftimeItems<'a> { + /// Creates a new parsing iterator from the `strftime`-like format string. + pub fn new(s: &'a str) -> StrftimeItems<'a> { + Self::with_remainer(s) + } + + /// Creates a new parsing iterator from the `strftime`-like format string. + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + pub fn new_with_locale(s: &'a str, locale: Locale) -> StrftimeItems<'a> { + let d_fmt = StrftimeItems::new(locales::d_fmt(locale)).collect(); + let d_t_fmt = StrftimeItems::new(locales::d_t_fmt(locale)).collect(); + let t_fmt = StrftimeItems::new(locales::t_fmt(locale)).collect(); + + StrftimeItems { remainder: s, recons: Vec::new(), d_fmt, d_t_fmt, t_fmt } + } + + #[cfg(not(feature = "unstable-locales"))] + fn with_remainer(s: &'a str) -> StrftimeItems<'a> { + static FMT_NONE: &[Item<'static>; 0] = &[]; + + StrftimeItems { + remainder: s, + recons: FMT_NONE, + d_fmt: D_FMT, + d_t_fmt: D_T_FMT, + t_fmt: T_FMT, + } + } + + #[cfg(feature = "unstable-locales")] + fn with_remainer(s: &'a str) -> StrftimeItems<'a> { + StrftimeItems { + remainder: s, + recons: Vec::new(), + d_fmt: D_FMT.to_vec(), + d_t_fmt: D_T_FMT.to_vec(), + t_fmt: T_FMT.to_vec(), + } + } +} + +const HAVE_ALTERNATES: &str = "z"; + +impl<'a> Iterator for StrftimeItems<'a> { + type Item = Item<'a>; + + fn next(&mut self) -> Option> { + // we have some reconstructed items to return + if !self.recons.is_empty() { + let item; + #[cfg(feature = "unstable-locales")] + { + item = self.recons.remove(0); + } + #[cfg(not(feature = "unstable-locales"))] + { + item = self.recons[0].clone(); + self.recons = &self.recons[1..]; + } + return Some(item); + } + + match self.remainder.chars().next() { + // we are done + None => None, + + // the next item is a specifier + Some('%') => { + self.remainder = &self.remainder[1..]; + + macro_rules! next { + () => { + match self.remainder.chars().next() { + Some(x) => { + self.remainder = &self.remainder[x.len_utf8()..]; + x + } + None => return Some(Item::Error), // premature end of string + } + }; + } + + let spec = next!(); + let pad_override = match spec { + '-' => Some(Pad::None), + '0' => Some(Pad::Zero), + '_' => Some(Pad::Space), + _ => None, + }; + let is_alternate = spec == '#'; + let spec = if pad_override.is_some() || is_alternate { next!() } else { spec }; + if is_alternate && !HAVE_ALTERNATES.contains(spec) { + return Some(Item::Error); + } + + macro_rules! recons { + [$head:expr, $($tail:expr),+ $(,)*] => ({ + #[cfg(feature = "unstable-locales")] + { + self.recons.clear(); + $(self.recons.push($tail);)+ + } + #[cfg(not(feature = "unstable-locales"))] + { + const RECONS: &'static [Item<'static>] = &[$($tail),+]; + self.recons = RECONS; + } + $head + }) + } + + macro_rules! recons_from_slice { + ($slice:expr) => {{ + #[cfg(feature = "unstable-locales")] + { + self.recons.clear(); + self.recons.extend_from_slice(&$slice[1..]); + } + #[cfg(not(feature = "unstable-locales"))] + { + self.recons = &$slice[1..]; + } + $slice[0].clone() + }}; + } + + let item = match spec { + 'A' => fix!(LongWeekdayName), + 'B' => fix!(LongMonthName), + 'C' => num0!(YearDiv100), + 'D' => { + recons![num0!(Month), lit!("/"), num0!(Day), lit!("/"), num0!(YearMod100)] + } + 'F' => recons![num0!(Year), lit!("-"), num0!(Month), lit!("-"), num0!(Day)], + 'G' => num0!(IsoYear), + 'H' => num0!(Hour), + 'I' => num0!(Hour12), + 'M' => num0!(Minute), + 'P' => fix!(LowerAmPm), + 'R' => recons![num0!(Hour), lit!(":"), num0!(Minute)], + 'S' => num0!(Second), + 'T' => recons![num0!(Hour), lit!(":"), num0!(Minute), lit!(":"), num0!(Second)], + 'U' => num0!(WeekFromSun), + 'V' => num0!(IsoWeek), + 'W' => num0!(WeekFromMon), + 'X' => recons_from_slice!(self.t_fmt), + 'Y' => num0!(Year), + 'Z' => fix!(TimezoneName), + 'a' => fix!(ShortWeekdayName), + 'b' | 'h' => fix!(ShortMonthName), + 'c' => recons_from_slice!(self.d_t_fmt), + 'd' => num0!(Day), + 'e' => nums!(Day), + 'f' => num0!(Nanosecond), + 'g' => num0!(IsoYearMod100), + 'j' => num0!(Ordinal), + 'k' => nums!(Hour), + 'l' => nums!(Hour12), + 'm' => num0!(Month), + 'n' => sp!("\n"), + 'p' => fix!(UpperAmPm), + 'r' => recons![ + num0!(Hour12), + lit!(":"), + num0!(Minute), + lit!(":"), + num0!(Second), + sp!(" "), + fix!(UpperAmPm) + ], + 's' => num!(Timestamp), + 't' => sp!("\t"), + 'u' => num!(WeekdayFromMon), + 'v' => { + recons![nums!(Day), lit!("-"), fix!(ShortMonthName), lit!("-"), num0!(Year)] + } + 'w' => num!(NumDaysFromSun), + 'x' => recons_from_slice!(self.d_fmt), + 'y' => num0!(YearMod100), + 'z' => { + if is_alternate { + internal_fix!(TimezoneOffsetPermissive) + } else { + fix!(TimezoneOffset) + } + } + '+' => fix!(RFC3339), + ':' => { + if self.remainder.starts_with("::z") { + self.remainder = &self.remainder[3..]; + fix!(TimezoneOffsetTripleColon) + } else if self.remainder.starts_with(":z") { + self.remainder = &self.remainder[2..]; + fix!(TimezoneOffsetDoubleColon) + } else if self.remainder.starts_with('z') { + self.remainder = &self.remainder[1..]; + fix!(TimezoneOffsetColon) + } else { + Item::Error + } + } + '.' => match next!() { + '3' => match next!() { + 'f' => fix!(Nanosecond3), + _ => Item::Error, + }, + '6' => match next!() { + 'f' => fix!(Nanosecond6), + _ => Item::Error, + }, + '9' => match next!() { + 'f' => fix!(Nanosecond9), + _ => Item::Error, + }, + 'f' => fix!(Nanosecond), + _ => Item::Error, + }, + '3' => match next!() { + 'f' => internal_fix!(Nanosecond3NoDot), + _ => Item::Error, + }, + '6' => match next!() { + 'f' => internal_fix!(Nanosecond6NoDot), + _ => Item::Error, + }, + '9' => match next!() { + 'f' => internal_fix!(Nanosecond9NoDot), + _ => Item::Error, + }, + '%' => lit!("%"), + _ => Item::Error, // no such specifier + }; + + // adjust `item` if we have any padding modifier + if let Some(new_pad) = pad_override { + match item { + Item::Numeric(ref kind, _pad) if self.recons.is_empty() => { + Some(Item::Numeric(kind.clone(), new_pad)) + } + _ => Some(Item::Error), // no reconstructed or non-numeric item allowed + } + } else { + Some(item) + } + } + + // the next item is space + Some(c) if c.is_whitespace() => { + // `%` is not a whitespace, so `c != '%'` is redundant + let nextspec = self + .remainder + .find(|c: char| !c.is_whitespace()) + .unwrap_or(self.remainder.len()); + assert!(nextspec > 0); + let item = sp!(&self.remainder[..nextspec]); + self.remainder = &self.remainder[nextspec..]; + Some(item) + } + + // the next item is literal + _ => { + let nextspec = self + .remainder + .find(|c: char| c.is_whitespace() || c == '%') + .unwrap_or(self.remainder.len()); + assert!(nextspec > 0); + let item = lit!(&self.remainder[..nextspec]); + self.remainder = &self.remainder[nextspec..]; + Some(item) + } + } + } +} + +#[cfg(test)] +#[test] +fn test_strftime_items() { + fn parse_and_collect(s: &str) -> Vec> { + // map any error into `[Item::Error]`. useful for easy testing. + let items = StrftimeItems::new(s); + let items = items.map(|spec| if spec == Item::Error { None } else { Some(spec) }); + items.collect::>>().unwrap_or_else(|| vec![Item::Error]) + } + + assert_eq!(parse_and_collect(""), []); + assert_eq!(parse_and_collect(" \t\n\r "), [sp!(" \t\n\r ")]); + assert_eq!(parse_and_collect("hello?"), [lit!("hello?")]); + assert_eq!( + parse_and_collect("a b\t\nc"), + [lit!("a"), sp!(" "), lit!("b"), sp!("\t\n"), lit!("c")] + ); + assert_eq!(parse_and_collect("100%%"), [lit!("100"), lit!("%")]); + assert_eq!(parse_and_collect("100%% ok"), [lit!("100"), lit!("%"), sp!(" "), lit!("ok")]); + assert_eq!(parse_and_collect("%%PDF-1.0"), [lit!("%"), lit!("PDF-1.0")]); + assert_eq!( + parse_and_collect("%Y-%m-%d"), + [num0!(Year), lit!("-"), num0!(Month), lit!("-"), num0!(Day)] + ); + assert_eq!(parse_and_collect("[%F]"), parse_and_collect("[%Y-%m-%d]")); + assert_eq!(parse_and_collect("%m %d"), [num0!(Month), sp!(" "), num0!(Day)]); + assert_eq!(parse_and_collect("%"), [Item::Error]); + assert_eq!(parse_and_collect("%%"), [lit!("%")]); + assert_eq!(parse_and_collect("%%%"), [Item::Error]); + assert_eq!(parse_and_collect("%%%%"), [lit!("%"), lit!("%")]); + assert_eq!(parse_and_collect("foo%?"), [Item::Error]); + assert_eq!(parse_and_collect("bar%42"), [Item::Error]); + assert_eq!(parse_and_collect("quux% +"), [Item::Error]); + assert_eq!(parse_and_collect("%.Z"), [Item::Error]); + assert_eq!(parse_and_collect("%:Z"), [Item::Error]); + assert_eq!(parse_and_collect("%-Z"), [Item::Error]); + assert_eq!(parse_and_collect("%0Z"), [Item::Error]); + assert_eq!(parse_and_collect("%_Z"), [Item::Error]); + assert_eq!(parse_and_collect("%.j"), [Item::Error]); + assert_eq!(parse_and_collect("%:j"), [Item::Error]); + assert_eq!(parse_and_collect("%-j"), [num!(Ordinal)]); + assert_eq!(parse_and_collect("%0j"), [num0!(Ordinal)]); + assert_eq!(parse_and_collect("%_j"), [nums!(Ordinal)]); + assert_eq!(parse_and_collect("%.e"), [Item::Error]); + assert_eq!(parse_and_collect("%:e"), [Item::Error]); + assert_eq!(parse_and_collect("%-e"), [num!(Day)]); + assert_eq!(parse_and_collect("%0e"), [num0!(Day)]); + assert_eq!(parse_and_collect("%_e"), [nums!(Day)]); + assert_eq!(parse_and_collect("%z"), [fix!(TimezoneOffset)]); + assert_eq!(parse_and_collect("%#z"), [internal_fix!(TimezoneOffsetPermissive)]); + assert_eq!(parse_and_collect("%#m"), [Item::Error]); +} + +#[cfg(test)] +#[test] +fn test_strftime_docs() { + use crate::NaiveDate; + use crate::{DateTime, FixedOffset, TimeZone, Timelike, Utc}; + + let dt = FixedOffset::east_opt(34200) + .unwrap() + .from_local_datetime( + &NaiveDate::from_ymd_opt(2001, 7, 8) + .unwrap() + .and_hms_nano_opt(0, 34, 59, 1_026_490_708) + .unwrap(), + ) + .unwrap(); + + // date specifiers + assert_eq!(dt.format("%Y").to_string(), "2001"); + assert_eq!(dt.format("%C").to_string(), "20"); + assert_eq!(dt.format("%y").to_string(), "01"); + assert_eq!(dt.format("%m").to_string(), "07"); + assert_eq!(dt.format("%b").to_string(), "Jul"); + assert_eq!(dt.format("%B").to_string(), "July"); + assert_eq!(dt.format("%h").to_string(), "Jul"); + assert_eq!(dt.format("%d").to_string(), "08"); + assert_eq!(dt.format("%e").to_string(), " 8"); + assert_eq!(dt.format("%e").to_string(), dt.format("%_d").to_string()); + assert_eq!(dt.format("%a").to_string(), "Sun"); + assert_eq!(dt.format("%A").to_string(), "Sunday"); + assert_eq!(dt.format("%w").to_string(), "0"); + assert_eq!(dt.format("%u").to_string(), "7"); + assert_eq!(dt.format("%U").to_string(), "28"); + assert_eq!(dt.format("%W").to_string(), "27"); + assert_eq!(dt.format("%G").to_string(), "2001"); + assert_eq!(dt.format("%g").to_string(), "01"); + assert_eq!(dt.format("%V").to_string(), "27"); + assert_eq!(dt.format("%j").to_string(), "189"); + assert_eq!(dt.format("%D").to_string(), "07/08/01"); + assert_eq!(dt.format("%x").to_string(), "07/08/01"); + assert_eq!(dt.format("%F").to_string(), "2001-07-08"); + assert_eq!(dt.format("%v").to_string(), " 8-Jul-2001"); + + // time specifiers + assert_eq!(dt.format("%H").to_string(), "00"); + assert_eq!(dt.format("%k").to_string(), " 0"); + assert_eq!(dt.format("%k").to_string(), dt.format("%_H").to_string()); + assert_eq!(dt.format("%I").to_string(), "12"); + assert_eq!(dt.format("%l").to_string(), "12"); + assert_eq!(dt.format("%l").to_string(), dt.format("%_I").to_string()); + assert_eq!(dt.format("%P").to_string(), "am"); + assert_eq!(dt.format("%p").to_string(), "AM"); + assert_eq!(dt.format("%M").to_string(), "34"); + assert_eq!(dt.format("%S").to_string(), "60"); + assert_eq!(dt.format("%f").to_string(), "026490708"); + assert_eq!(dt.format("%.f").to_string(), ".026490708"); + assert_eq!(dt.with_nanosecond(1_026_490_000).unwrap().format("%.f").to_string(), ".026490"); + assert_eq!(dt.format("%.3f").to_string(), ".026"); + assert_eq!(dt.format("%.6f").to_string(), ".026490"); + assert_eq!(dt.format("%.9f").to_string(), ".026490708"); + assert_eq!(dt.format("%3f").to_string(), "026"); + assert_eq!(dt.format("%6f").to_string(), "026490"); + assert_eq!(dt.format("%9f").to_string(), "026490708"); + assert_eq!(dt.format("%R").to_string(), "00:34"); + assert_eq!(dt.format("%T").to_string(), "00:34:60"); + assert_eq!(dt.format("%X").to_string(), "00:34:60"); + assert_eq!(dt.format("%r").to_string(), "12:34:60 AM"); + + // time zone specifiers + //assert_eq!(dt.format("%Z").to_string(), "ACST"); + assert_eq!(dt.format("%z").to_string(), "+0930"); + assert_eq!(dt.format("%:z").to_string(), "+09:30"); + assert_eq!(dt.format("%::z").to_string(), "+09:30:00"); + assert_eq!(dt.format("%:::z").to_string(), "+09"); + + // date & time specifiers + assert_eq!(dt.format("%c").to_string(), "Sun Jul 8 00:34:60 2001"); + assert_eq!(dt.format("%+").to_string(), "2001-07-08T00:34:60.026490708+09:30"); + + assert_eq!( + dt.with_timezone(&Utc).format("%+").to_string(), + "2001-07-07T15:04:60.026490708+00:00" + ); + assert_eq!( + dt.with_timezone(&Utc), + DateTime::parse_from_str("2001-07-07T15:04:60.026490708Z", "%+").unwrap() + ); + assert_eq!( + dt.with_timezone(&Utc), + DateTime::parse_from_str("2001-07-07T15:04:60.026490708UTC", "%+").unwrap() + ); + assert_eq!( + dt.with_timezone(&Utc), + DateTime::parse_from_str("2001-07-07t15:04:60.026490708utc", "%+").unwrap() + ); + + assert_eq!( + dt.with_nanosecond(1_026_490_000).unwrap().format("%+").to_string(), + "2001-07-08T00:34:60.026490+09:30" + ); + assert_eq!(dt.format("%s").to_string(), "994518299"); + + // special specifiers + assert_eq!(dt.format("%t").to_string(), "\t"); + assert_eq!(dt.format("%n").to_string(), "\n"); + assert_eq!(dt.format("%%").to_string(), "%"); +} + +#[cfg(feature = "unstable-locales")] +#[test] +fn test_strftime_docs_localized() { + use crate::{FixedOffset, NaiveDate, TimeZone}; + + let dt = FixedOffset::east_opt(34200).unwrap().ymd_opt(2001, 7, 8).unwrap().and_hms_nano( + 0, + 34, + 59, + 1_026_490_708, + ); + + // date specifiers + assert_eq!(dt.format_localized("%b", Locale::fr_BE).to_string(), "jui"); + assert_eq!(dt.format_localized("%B", Locale::fr_BE).to_string(), "juillet"); + assert_eq!(dt.format_localized("%h", Locale::fr_BE).to_string(), "jui"); + assert_eq!(dt.format_localized("%a", Locale::fr_BE).to_string(), "dim"); + assert_eq!(dt.format_localized("%A", Locale::fr_BE).to_string(), "dimanche"); + assert_eq!(dt.format_localized("%D", Locale::fr_BE).to_string(), "07/08/01"); + assert_eq!(dt.format_localized("%x", Locale::fr_BE).to_string(), "08/07/01"); + assert_eq!(dt.format_localized("%F", Locale::fr_BE).to_string(), "2001-07-08"); + assert_eq!(dt.format_localized("%v", Locale::fr_BE).to_string(), " 8-jui-2001"); + + // time specifiers + assert_eq!(dt.format_localized("%P", Locale::fr_BE).to_string(), ""); + assert_eq!(dt.format_localized("%p", Locale::fr_BE).to_string(), ""); + assert_eq!(dt.format_localized("%R", Locale::fr_BE).to_string(), "00:34"); + assert_eq!(dt.format_localized("%T", Locale::fr_BE).to_string(), "00:34:60"); + assert_eq!(dt.format_localized("%X", Locale::fr_BE).to_string(), "00:34:60"); + assert_eq!(dt.format_localized("%r", Locale::fr_BE).to_string(), "12:34:60 "); + + // date & time specifiers + assert_eq!( + dt.format_localized("%c", Locale::fr_BE).to_string(), + "dim 08 jui 2001 00:34:60 +09:30" + ); + + let nd = NaiveDate::from_ymd_opt(2001, 7, 8).unwrap(); + + // date specifiers + assert_eq!(nd.format_localized("%b", Locale::de_DE).to_string(), "Jul"); + assert_eq!(nd.format_localized("%B", Locale::de_DE).to_string(), "Juli"); + assert_eq!(nd.format_localized("%h", Locale::de_DE).to_string(), "Jul"); + assert_eq!(nd.format_localized("%a", Locale::de_DE).to_string(), "So"); + assert_eq!(nd.format_localized("%A", Locale::de_DE).to_string(), "Sonntag"); + assert_eq!(nd.format_localized("%D", Locale::de_DE).to_string(), "07/08/01"); + assert_eq!(nd.format_localized("%x", Locale::de_DE).to_string(), "08.07.2001"); + assert_eq!(nd.format_localized("%F", Locale::de_DE).to_string(), "2001-07-08"); + assert_eq!(nd.format_localized("%v", Locale::de_DE).to_string(), " 8-Jul-2001"); +} diff --git a/javascript-engine/external/chrono/src/lib.rs b/javascript-engine/external/chrono/src/lib.rs new file mode 100644 index 0000000..861ee10 --- /dev/null +++ b/javascript-engine/external/chrono/src/lib.rs @@ -0,0 +1,527 @@ +//! # Chrono: Date and Time for Rust +//! +//! It aims to be a feature-complete superset of +//! the [time](https://github.com/rust-lang-deprecated/time) library. +//! In particular, +//! +//! * Chrono strictly adheres to ISO 8601. +//! * Chrono is timezone-aware by default, with separate timezone-naive types. +//! * Chrono is space-optimal and (while not being the primary goal) reasonably efficient. +//! +//! There were several previous attempts to bring a good date and time library to Rust, +//! which Chrono builds upon and should acknowledge: +//! +//! * [Initial research on +//! the wiki](https://github.com/rust-lang/rust-wiki-backup/blob/master/Lib-datetime.md) +//! * Dietrich Epp's [datetime-rs](https://github.com/depp/datetime-rs) +//! * Luis de Bethencourt's [rust-datetime](https://github.com/luisbg/rust-datetime) +//! +//! ### Features +//! +//! Chrono supports various runtime environments and operating systems, and has +//! several features that may be enabled or disabled. +//! +//! Default features: +//! +//! - `alloc`: Enable features that depend on allocation (primarily string formatting) +//! - `std`: Enables functionality that depends on the standard library. This +//! is a superset of `alloc` and adds interoperation with standard library types +//! and traits. +//! - `clock`: Enables reading the system time (`now`) that depends on the standard library for +//! UNIX-like operating systems and the Windows API (`winapi`) for Windows. +//! +//! Optional features: +//! +//! - [`serde`][]: Enable serialization/deserialization via serde. +//! - `unstable-locales`: Enable localization. This adds various methods with a +//! `_localized` suffix. The implementation and API may change or even be +//! removed in a patch release. Feedback welcome. +//! +//! [`serde`]: https://github.com/serde-rs/serde +//! [wasm-bindgen]: https://github.com/rustwasm/wasm-bindgen +//! +//! See the [cargo docs][] for examples of specifying features. +//! +//! [cargo docs]: https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#choosing-features +//! +//! ## Overview +//! +//! ### Duration +//! +//! Chrono currently uses its own [`Duration`] type to represent the magnitude +//! of a time span. Since this has the same name as the newer, standard type for +//! duration, the reference will refer this type as `OldDuration`. +//! +//! Note that this is an "accurate" duration represented as seconds and +//! nanoseconds and does not represent "nominal" components such as days or +//! months. +//! +//! When the `oldtime` feature is enabled, [`Duration`] is an alias for the +//! [`time::Duration`](https://docs.rs/time/0.1.40/time/struct.Duration.html) +//! type from v0.1 of the time crate. time v0.1 is deprecated, so new code +//! should disable the `oldtime` feature and use the `chrono::Duration` type +//! instead. The `oldtime` feature is enabled by default for backwards +//! compatibility, but future versions of Chrono are likely to remove the +//! feature entirely. +//! +//! Chrono does not yet natively support +//! the standard [`Duration`](https://doc.rust-lang.org/std/time/struct.Duration.html) type, +//! but it will be supported in the future. +//! Meanwhile you can convert between two types with +//! [`Duration::from_std`](https://docs.rs/time/0.1.40/time/struct.Duration.html#method.from_std) +//! and +//! [`Duration::to_std`](https://docs.rs/time/0.1.40/time/struct.Duration.html#method.to_std) +//! methods. +//! +//! ### Date and Time +//! +//! Chrono provides a +//! [**`DateTime`**](./struct.DateTime.html) +//! type to represent a date and a time in a timezone. +//! +//! For more abstract moment-in-time tracking such as internal timekeeping +//! that is unconcerned with timezones, consider +//! [`time::SystemTime`](https://doc.rust-lang.org/std/time/struct.SystemTime.html), +//! which tracks your system clock, or +//! [`time::Instant`](https://doc.rust-lang.org/std/time/struct.Instant.html), which +//! is an opaque but monotonically-increasing representation of a moment in time. +//! +//! `DateTime` is timezone-aware and must be constructed from +//! the [**`TimeZone`**](./offset/trait.TimeZone.html) object, +//! which defines how the local date is converted to and back from the UTC date. +//! There are three well-known `TimeZone` implementations: +//! +//! * [**`Utc`**](./offset/struct.Utc.html) specifies the UTC time zone. It is most efficient. +//! +//! * [**`Local`**](./offset/struct.Local.html) specifies the system local time zone. +//! +//! * [**`FixedOffset`**](./offset/struct.FixedOffset.html) specifies +//! an arbitrary, fixed time zone such as UTC+09:00 or UTC-10:30. +//! This often results from the parsed textual date and time. +//! Since it stores the most information and does not depend on the system environment, +//! you would want to normalize other `TimeZone`s into this type. +//! +//! `DateTime`s with different `TimeZone` types are distinct and do not mix, +//! but can be converted to each other using +//! the [`DateTime::with_timezone`](./struct.DateTime.html#method.with_timezone) method. +//! +//! You can get the current date and time in the UTC time zone +//! ([`Utc::now()`](./offset/struct.Utc.html#method.now)) +//! or in the local time zone +//! ([`Local::now()`](./offset/struct.Local.html#method.now)). +//! +//! ```rust +//! use chrono::prelude::*; +//! +//! let utc: DateTime = Utc::now(); // e.g. `2014-11-28T12:45:59.324310806Z` +//! let local: DateTime = Local::now(); // e.g. `2014-11-28T21:45:59.324310806+09:00` +//! # let _ = utc; let _ = local; +//! ``` +//! +//! Alternatively, you can create your own date and time. +//! This is a bit verbose due to Rust's lack of function and method overloading, +//! but in turn we get a rich combination of initialization methods. +//! +//! ```rust +//! use chrono::prelude::*; +//! use chrono::offset::LocalResult; +//! +//! let dt = Utc.with_ymd_and_hms(2014, 7, 8, 9, 10, 11).unwrap(); // `2014-07-08T09:10:11Z` +//! // July 8 is 188th day of the year 2014 (`o` for "ordinal") +//! assert_eq!(dt, Utc.yo(2014, 189).and_hms_opt(9, 10, 11).unwrap()); +//! // July 8 is Tuesday in ISO week 28 of the year 2014. +//! assert_eq!(dt, Utc.isoywd(2014, 28, Weekday::Tue).and_hms_opt(9, 10, 11).unwrap()); +//! +//! let dt = NaiveDate::from_ymd_opt(2014, 7, 8).unwrap().and_hms_milli_opt(9, 10, 11, 12).unwrap().and_local_timezone(Utc).unwrap(); // `2014-07-08T09:10:11.012Z` +//! assert_eq!(dt, NaiveDate::from_ymd_opt(2014, 7, 8).unwrap().and_hms_micro_opt(9, 10, 11, 12_000).unwrap().and_local_timezone(Utc).unwrap()); +//! assert_eq!(dt, NaiveDate::from_ymd_opt(2014, 7, 8).unwrap().and_hms_nano_opt(9, 10, 11, 12_000_000).unwrap().and_local_timezone(Utc).unwrap()); +//! +//! // dynamic verification +//! assert_eq!(Utc.ymd_opt(2014, 7, 8).and_hms_opt(21, 15, 33), +//! LocalResult::Single(Utc.with_ymd_and_hms(2014, 7, 8, 21, 15, 33).unwrap())); +//! assert_eq!(Utc.ymd_opt(2014, 7, 8).and_hms_opt(80, 15, 33), LocalResult::None); +//! assert_eq!(Utc.ymd_opt(2014, 7, 38).and_hms_opt(21, 15, 33), LocalResult::None); +//! +//! // other time zone objects can be used to construct a local datetime. +//! // obviously, `local_dt` is normally different from `dt`, but `fixed_dt` should be identical. +//! let local_dt = Local.from_local_datetime(&NaiveDate::from_ymd_opt(2014, 7, 8).unwrap().and_hms_milli_opt(9, 10, 11, 12).unwrap()).unwrap(); +//! let fixed_dt = FixedOffset::east_opt(9 * 3600).unwrap().from_local_datetime(&NaiveDate::from_ymd_opt(2014, 7, 8).unwrap().and_hms_milli_opt(18, 10, 11, 12).unwrap()).unwrap(); +//! assert_eq!(dt, fixed_dt); +//! # let _ = local_dt; +//! ``` +//! +//! Various properties are available to the date and time, and can be altered individually. +//! Most of them are defined in the traits [`Datelike`](./trait.Datelike.html) and +//! [`Timelike`](./trait.Timelike.html) which you should `use` before. +//! Addition and subtraction is also supported. +//! The following illustrates most supported operations to the date and time: +//! +//! ```rust +//! use chrono::prelude::*; +//! use chrono::Duration; +//! +//! // assume this returned `2014-11-28T21:45:59.324310806+09:00`: +//! let dt = FixedOffset::east_opt(9*3600).unwrap().from_local_datetime(&NaiveDate::from_ymd_opt(2014, 11, 28).unwrap().and_hms_nano_opt(21, 45, 59, 324310806).unwrap()).unwrap(); +//! +//! // property accessors +//! assert_eq!((dt.year(), dt.month(), dt.day()), (2014, 11, 28)); +//! assert_eq!((dt.month0(), dt.day0()), (10, 27)); // for unfortunate souls +//! assert_eq!((dt.hour(), dt.minute(), dt.second()), (21, 45, 59)); +//! assert_eq!(dt.weekday(), Weekday::Fri); +//! assert_eq!(dt.weekday().number_from_monday(), 5); // Mon=1, ..., Sun=7 +//! assert_eq!(dt.ordinal(), 332); // the day of year +//! assert_eq!(dt.num_days_from_ce(), 735565); // the number of days from and including Jan 1, 1 +//! +//! // time zone accessor and manipulation +//! assert_eq!(dt.offset().fix().local_minus_utc(), 9 * 3600); +//! assert_eq!(dt.timezone(), FixedOffset::east_opt(9 * 3600).unwrap()); +//! assert_eq!(dt.with_timezone(&Utc), NaiveDate::from_ymd_opt(2014, 11, 28).unwrap().and_hms_nano_opt(12, 45, 59, 324310806).unwrap().and_local_timezone(Utc).unwrap()); +//! +//! // a sample of property manipulations (validates dynamically) +//! assert_eq!(dt.with_day(29).unwrap().weekday(), Weekday::Sat); // 2014-11-29 is Saturday +//! assert_eq!(dt.with_day(32), None); +//! assert_eq!(dt.with_year(-300).unwrap().num_days_from_ce(), -109606); // November 29, 301 BCE +//! +//! // arithmetic operations +//! let dt1 = Utc.with_ymd_and_hms(2014, 11, 14, 8, 9, 10).unwrap(); +//! let dt2 = Utc.with_ymd_and_hms(2014, 11, 14, 10, 9, 8).unwrap(); +//! assert_eq!(dt1.signed_duration_since(dt2), Duration::seconds(-2 * 3600 + 2)); +//! assert_eq!(dt2.signed_duration_since(dt1), Duration::seconds(2 * 3600 - 2)); +//! assert_eq!(Utc.with_ymd_and_hms(1970, 1, 1, 0, 0, 0).unwrap() + Duration::seconds(1_000_000_000), +//! Utc.with_ymd_and_hms(2001, 9, 9, 1, 46, 40).unwrap()); +//! assert_eq!(Utc.with_ymd_and_hms(1970, 1, 1, 0, 0, 0).unwrap() - Duration::seconds(1_000_000_000), +//! Utc.with_ymd_and_hms(1938, 4, 24, 22, 13, 20).unwrap()); +//! ``` +//! +//! ### Formatting and Parsing +//! +//! Formatting is done via the [`format`](./struct.DateTime.html#method.format) method, +//! which format is equivalent to the familiar `strftime` format. +//! +//! See [`format::strftime`](./format/strftime/index.html#specifiers) +//! documentation for full syntax and list of specifiers. +//! +//! The default `to_string` method and `{:?}` specifier also give a reasonable representation. +//! Chrono also provides [`to_rfc2822`](./struct.DateTime.html#method.to_rfc2822) and +//! [`to_rfc3339`](./struct.DateTime.html#method.to_rfc3339) methods +//! for well-known formats. +//! +//! Chrono now also provides date formatting in almost any language without the +//! help of an additional C library. This functionality is under the feature +//! `unstable-locales`: +//! +//! ```toml +//! chrono = { version = "0.4", features = ["unstable-locales"] } +//! ``` +//! +//! The `unstable-locales` feature requires and implies at least the `alloc` feature. +//! +//! ```rust +//! use chrono::prelude::*; +//! +//! # #[cfg(feature = "unstable-locales")] +//! # fn test() { +//! let dt = Utc.with_ymd_and_hms(2014, 11, 28, 12, 0, 9).unwrap(); +//! assert_eq!(dt.format("%Y-%m-%d %H:%M:%S").to_string(), "2014-11-28 12:00:09"); +//! assert_eq!(dt.format("%a %b %e %T %Y").to_string(), "Fri Nov 28 12:00:09 2014"); +//! assert_eq!(dt.format_localized("%A %e %B %Y, %T", Locale::fr_BE).to_string(), "vendredi 28 novembre 2014, 12:00:09"); +//! +//! assert_eq!(dt.format("%a %b %e %T %Y").to_string(), dt.format("%c").to_string()); +//! assert_eq!(dt.to_string(), "2014-11-28 12:00:09 UTC"); +//! assert_eq!(dt.to_rfc2822(), "Fri, 28 Nov 2014 12:00:09 +0000"); +//! assert_eq!(dt.to_rfc3339(), "2014-11-28T12:00:09+00:00"); +//! assert_eq!(format!("{:?}", dt), "2014-11-28T12:00:09Z"); +//! +//! // Note that milli/nanoseconds are only printed if they are non-zero +//! let dt_nano = NaiveDate::from_ymd_opt(2014, 11, 28).unwrap().and_hms_nano_opt(12, 0, 9, 1).unwrap().and_local_timezone(Utc).unwrap(); +//! assert_eq!(format!("{:?}", dt_nano), "2014-11-28T12:00:09.000000001Z"); +//! # } +//! # #[cfg(not(feature = "unstable-locales"))] +//! # fn test() {} +//! # if cfg!(feature = "unstable-locales") { +//! # test(); +//! # } +//! ``` +//! +//! Parsing can be done with three methods: +//! +//! 1. The standard [`FromStr`](https://doc.rust-lang.org/std/str/trait.FromStr.html) trait +//! (and [`parse`](https://doc.rust-lang.org/std/primitive.str.html#method.parse) method +//! on a string) can be used for parsing `DateTime`, `DateTime` and +//! `DateTime` values. This parses what the `{:?}` +//! ([`std::fmt::Debug`](https://doc.rust-lang.org/std/fmt/trait.Debug.html)) +//! format specifier prints, and requires the offset to be present. +//! +//! 2. [`DateTime::parse_from_str`](./struct.DateTime.html#method.parse_from_str) parses +//! a date and time with offsets and returns `DateTime`. +//! This should be used when the offset is a part of input and the caller cannot guess that. +//! It *cannot* be used when the offset can be missing. +//! [`DateTime::parse_from_rfc2822`](./struct.DateTime.html#method.parse_from_rfc2822) +//! and +//! [`DateTime::parse_from_rfc3339`](./struct.DateTime.html#method.parse_from_rfc3339) +//! are similar but for well-known formats. +//! +//! 3. [`Offset::datetime_from_str`](./offset/trait.TimeZone.html#method.datetime_from_str) is +//! similar but returns `DateTime` of given offset. +//! When the explicit offset is missing from the input, it simply uses given offset. +//! It issues an error when the input contains an explicit offset different +//! from the current offset. +//! +//! More detailed control over the parsing process is available via +//! [`format`](./format/index.html) module. +//! +//! ```rust +//! use chrono::prelude::*; +//! +//! let dt = Utc.with_ymd_and_hms(2014, 11, 28, 12, 0, 9).unwrap(); +//! let fixed_dt = dt.with_timezone(&FixedOffset::east_opt(9*3600).unwrap()); +//! +//! // method 1 +//! assert_eq!("2014-11-28T12:00:09Z".parse::>(), Ok(dt.clone())); +//! assert_eq!("2014-11-28T21:00:09+09:00".parse::>(), Ok(dt.clone())); +//! assert_eq!("2014-11-28T21:00:09+09:00".parse::>(), Ok(fixed_dt.clone())); +//! +//! // method 2 +//! assert_eq!(DateTime::parse_from_str("2014-11-28 21:00:09 +09:00", "%Y-%m-%d %H:%M:%S %z"), +//! Ok(fixed_dt.clone())); +//! assert_eq!(DateTime::parse_from_rfc2822("Fri, 28 Nov 2014 21:00:09 +0900"), +//! Ok(fixed_dt.clone())); +//! assert_eq!(DateTime::parse_from_rfc3339("2014-11-28T21:00:09+09:00"), Ok(fixed_dt.clone())); +//! +//! // method 3 +//! assert_eq!(Utc.datetime_from_str("2014-11-28 12:00:09", "%Y-%m-%d %H:%M:%S"), Ok(dt.clone())); +//! assert_eq!(Utc.datetime_from_str("Fri Nov 28 12:00:09 2014", "%a %b %e %T %Y"), Ok(dt.clone())); +//! +//! // oops, the year is missing! +//! assert!(Utc.datetime_from_str("Fri Nov 28 12:00:09", "%a %b %e %T %Y").is_err()); +//! // oops, the format string does not include the year at all! +//! assert!(Utc.datetime_from_str("Fri Nov 28 12:00:09", "%a %b %e %T").is_err()); +//! // oops, the weekday is incorrect! +//! assert!(Utc.datetime_from_str("Sat Nov 28 12:00:09 2014", "%a %b %e %T %Y").is_err()); +//! ``` +//! +//! Again : See [`format::strftime`](./format/strftime/index.html#specifiers) +//! documentation for full syntax and list of specifiers. +//! +//! ### Conversion from and to EPOCH timestamps +//! +//! Use [`Utc.timestamp(seconds, nanoseconds)`](./offset/trait.TimeZone.html#method.timestamp) +//! to construct a [`DateTime`](./struct.DateTime.html) from a UNIX timestamp +//! (seconds, nanoseconds that passed since January 1st 1970). +//! +//! Use [`DateTime.timestamp`](./struct.DateTime.html#method.timestamp) to get the timestamp (in seconds) +//! from a [`DateTime`](./struct.DateTime.html). Additionally, you can use +//! [`DateTime.timestamp_subsec_nanos`](./struct.DateTime.html#method.timestamp_subsec_nanos) +//! to get the number of additional number of nanoseconds. +//! +//! ```rust +//! // We need the trait in scope to use Utc::timestamp(). +//! use chrono::{DateTime, TimeZone, Utc}; +//! +//! // Construct a datetime from epoch: +//! let dt = Utc.timestamp(1_500_000_000, 0); +//! assert_eq!(dt.to_rfc2822(), "Fri, 14 Jul 2017 02:40:00 +0000"); +//! +//! // Get epoch value from a datetime: +//! let dt = DateTime::parse_from_rfc2822("Fri, 14 Jul 2017 02:40:00 +0000").unwrap(); +//! assert_eq!(dt.timestamp(), 1_500_000_000); +//! ``` +//! +//! ### Individual date +//! +//! Chrono also provides an individual date type ([**`Date`**](./struct.Date.html)). +//! It also has time zones attached, and have to be constructed via time zones. +//! Most operations available to `DateTime` are also available to `Date` whenever appropriate. +//! +//! ```rust +//! use chrono::prelude::*; +//! use chrono::offset::LocalResult; +//! +//! # // these *may* fail, but only very rarely. just rerun the test if you were that unfortunate ;) +//! assert_eq!(Utc::today(), Utc::now().date()); +//! assert_eq!(Local::today(), Local::now().date()); +//! +//! assert_eq!(Utc.ymd_opt(2014, 11, 28).unwrap().weekday(), Weekday::Fri); +//! assert_eq!(Utc.ymd_opt(2014, 11, 31), LocalResult::None); +//! assert_eq!(NaiveDate::from_ymd_opt(2014, 11, 28).unwrap().and_hms_milli_opt(7, 8, 9, 10).unwrap().and_local_timezone(Utc).unwrap().format("%H%M%S").to_string(), +//! "070809"); +//! ``` +//! +//! There is no timezone-aware `Time` due to the lack of usefulness and also the complexity. +//! +//! `DateTime` has [`date`](./struct.DateTime.html#method.date) method +//! which returns a `Date` which represents its date component. +//! There is also a [`time`](./struct.DateTime.html#method.time) method, +//! which simply returns a naive local time described below. +//! +//! ### Naive date and time +//! +//! Chrono provides naive counterparts to `Date`, (non-existent) `Time` and `DateTime` +//! as [**`NaiveDate`**](./naive/struct.NaiveDate.html), +//! [**`NaiveTime`**](./naive/struct.NaiveTime.html) and +//! [**`NaiveDateTime`**](./naive/struct.NaiveDateTime.html) respectively. +//! +//! They have almost equivalent interfaces as their timezone-aware twins, +//! but are not associated to time zones obviously and can be quite low-level. +//! They are mostly useful for building blocks for higher-level types. +//! +//! Timezone-aware `DateTime` and `Date` types have two methods returning naive versions: +//! [`naive_local`](./struct.DateTime.html#method.naive_local) returns +//! a view to the naive local time, +//! and [`naive_utc`](./struct.DateTime.html#method.naive_utc) returns +//! a view to the naive UTC time. +//! +//! ## Limitations +//! +//! Only proleptic Gregorian calendar (i.e. extended to support older dates) is supported. +//! Be very careful if you really have to deal with pre-20C dates, they can be in Julian or others. +//! +//! Date types are limited in about +/- 262,000 years from the common epoch. +//! Time types are limited in the nanosecond accuracy. +//! +//! [Leap seconds are supported in the representation but +//! Chrono doesn't try to make use of them](./naive/struct.NaiveTime.html#leap-second-handling). +//! (The main reason is that leap seconds are not really predictable.) +//! Almost *every* operation over the possible leap seconds will ignore them. +//! Consider using `NaiveDateTime` with the implicit TAI (International Atomic Time) scale +//! if you want. +//! +//! Chrono inherently does not support an inaccurate or partial date and time representation. +//! Any operation that can be ambiguous will return `None` in such cases. +//! For example, "a month later" of 2014-01-30 is not well-defined +//! and consequently `Utc.ymd_opt(2014, 1, 30).unwrap().with_month(2)` returns `None`. +//! +//! Non ISO week handling is not yet supported. +//! For now you can use the [chrono_ext](https://crates.io/crates/chrono_ext) +//! crate ([sources](https://github.com/bcourtine/chrono-ext/)). +//! +//! Advanced time zone handling is not yet supported. +//! For now you can try the [Chrono-tz](https://github.com/chronotope/chrono-tz/) crate instead. + +#![doc(html_root_url = "https://docs.rs/chrono/latest/")] +#![cfg_attr(feature = "bench", feature(test))] // lib stability features as per RFC #507 +#![deny(missing_docs)] +#![deny(missing_debug_implementations)] +#![warn(unreachable_pub)] +#![deny(dead_code)] +#![cfg_attr(not(any(feature = "std", test)), no_std)] +// can remove this if/when rustc-serialize support is removed +// keeps clippy happy in the meantime +#![cfg_attr(feature = "rustc-serialize", allow(deprecated))] +#![cfg_attr(docsrs, feature(doc_cfg))] + +#[cfg(feature = "oldtime")] +#[cfg_attr(docsrs, doc(cfg(feature = "oldtime")))] +extern crate time as oldtime; +#[cfg(not(feature = "oldtime"))] +mod oldtime; +// this reexport is to aid the transition and should not be in the prelude! +pub use oldtime::{Duration, OutOfRangeError}; + +#[cfg(feature = "__doctest")] +#[cfg_attr(feature = "__doctest", cfg(doctest))] +use doc_comment::doctest; + +#[cfg(feature = "__doctest")] +#[cfg_attr(feature = "__doctest", cfg(doctest))] +doctest!("../README.md"); + +/// A convenience module appropriate for glob imports (`use chrono::prelude::*;`). +pub mod prelude { + #[doc(no_inline)] + #[allow(deprecated)] + pub use crate::Date; + #[cfg(feature = "clock")] + #[cfg_attr(docsrs, doc(cfg(feature = "clock")))] + #[doc(no_inline)] + pub use crate::Local; + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + #[doc(no_inline)] + pub use crate::Locale; + #[doc(no_inline)] + pub use crate::SubsecRound; + #[doc(no_inline)] + pub use crate::{DateTime, SecondsFormat}; + #[doc(no_inline)] + pub use crate::{Datelike, Month, Timelike, Weekday}; + #[doc(no_inline)] + pub use crate::{FixedOffset, Utc}; + #[doc(no_inline)] + pub use crate::{NaiveDate, NaiveDateTime, NaiveTime}; + #[doc(no_inline)] + pub use crate::{Offset, TimeZone}; +} + +mod date; +#[allow(deprecated)] +pub use date::{Date, MAX_DATE, MIN_DATE}; + +mod datetime; +#[cfg(feature = "rustc-serialize")] +#[cfg_attr(docsrs, doc(cfg(feature = "rustc-serialize")))] +pub use datetime::rustc_serialize::TsSeconds; +#[allow(deprecated)] +pub use datetime::{DateTime, SecondsFormat, MAX_DATETIME, MIN_DATETIME}; + +pub mod format; +/// L10n locales. +#[cfg(feature = "unstable-locales")] +#[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] +pub use format::Locale; +pub use format::{ParseError, ParseResult}; + +pub mod naive; +#[doc(no_inline)] +pub use naive::{Days, IsoWeek, NaiveDate, NaiveDateTime, NaiveTime, NaiveWeek}; + +pub mod offset; +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +#[doc(no_inline)] +pub use offset::Local; +#[doc(no_inline)] +pub use offset::{FixedOffset, LocalResult, Offset, TimeZone, Utc}; + +mod round; +pub use round::{DurationRound, RoundingError, SubsecRound}; + +mod weekday; +pub use weekday::{ParseWeekdayError, Weekday}; + +mod month; +pub use month::{Month, Months, ParseMonthError}; + +mod traits; +pub use traits::{Datelike, Timelike}; + +#[cfg(feature = "__internal_bench")] +#[doc(hidden)] +pub use naive::__BenchYearFlags; + +/// Serialization/Deserialization with serde. +/// +/// This module provides default implementations for `DateTime` using the [RFC 3339][1] format and various +/// alternatives for use with serde's [`with` annotation][1]. +/// +/// *Available on crate feature 'serde' only.* +/// +/// [1]: https://tools.ietf.org/html/rfc3339 +/// [2]: https://serde.rs/attributes.html#field-attributes +#[cfg(feature = "serde")] +#[cfg_attr(docsrs, doc(cfg(feature = "serde")))] +pub mod serde { + pub use super::datetime::serde::*; +} + +/// MSRV 1.42 +#[cfg(test)] +#[macro_export] +macro_rules! matches { + ($expression:expr, $(|)? $( $pattern:pat )|+ $( if $guard: expr )? $(,)?) => { + match $expression { + $( $pattern )|+ $( if $guard )? => true, + _ => false + } + } +} diff --git a/javascript-engine/external/chrono/src/month.rs b/javascript-engine/external/chrono/src/month.rs new file mode 100644 index 0000000..f444dc0 --- /dev/null +++ b/javascript-engine/external/chrono/src/month.rs @@ -0,0 +1,355 @@ +use core::fmt; + +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +/// The month of the year. +/// +/// This enum is just a convenience implementation. +/// The month in dates created by DateLike objects does not return this enum. +/// +/// It is possible to convert from a date to a month independently +/// ``` +/// use num_traits::FromPrimitive; +/// use chrono::prelude::*; +/// let date = Utc.with_ymd_and_hms(2019, 10, 28, 9, 10, 11).unwrap(); +/// // `2019-10-28T09:10:11Z` +/// let month = Month::from_u32(date.month()); +/// assert_eq!(month, Some(Month::October)) +/// ``` +/// Or from a Month to an integer usable by dates +/// ``` +/// # use chrono::prelude::*; +/// let month = Month::January; +/// let dt = Utc.with_ymd_and_hms(2019, month.number_from_month(), 28, 9, 10, 11).unwrap(); +/// assert_eq!((dt.year(), dt.month(), dt.day()), (2019, 1, 28)); +/// ``` +/// Allows mapping from and to month, from 1-January to 12-December. +/// Can be Serialized/Deserialized with serde +// Actual implementation is zero-indexed, API intended as 1-indexed for more intuitive behavior. +#[derive(PartialEq, Eq, Copy, Clone, Debug, Hash)] +#[cfg_attr(feature = "rustc-serialize", derive(RustcEncodable, RustcDecodable))] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))] +pub enum Month { + /// January + January = 0, + /// February + February = 1, + /// March + March = 2, + /// April + April = 3, + /// May + May = 4, + /// June + June = 5, + /// July + July = 6, + /// August + August = 7, + /// September + September = 8, + /// October + October = 9, + /// November + November = 10, + /// December + December = 11, +} + +impl Month { + /// The next month. + /// + /// `m`: | `January` | `February` | `...` | `December` + /// ----------- | --------- | ---------- | --- | --------- + /// `m.succ()`: | `February` | `March` | `...` | `January` + #[inline] + pub fn succ(&self) -> Month { + match *self { + Month::January => Month::February, + Month::February => Month::March, + Month::March => Month::April, + Month::April => Month::May, + Month::May => Month::June, + Month::June => Month::July, + Month::July => Month::August, + Month::August => Month::September, + Month::September => Month::October, + Month::October => Month::November, + Month::November => Month::December, + Month::December => Month::January, + } + } + + /// The previous month. + /// + /// `m`: | `January` | `February` | `...` | `December` + /// ----------- | --------- | ---------- | --- | --------- + /// `m.pred()`: | `December` | `January` | `...` | `November` + #[inline] + pub fn pred(&self) -> Month { + match *self { + Month::January => Month::December, + Month::February => Month::January, + Month::March => Month::February, + Month::April => Month::March, + Month::May => Month::April, + Month::June => Month::May, + Month::July => Month::June, + Month::August => Month::July, + Month::September => Month::August, + Month::October => Month::September, + Month::November => Month::October, + Month::December => Month::November, + } + } + + /// Returns a month-of-year number starting from January = 1. + /// + /// `m`: | `January` | `February` | `...` | `December` + /// -------------------------| --------- | ---------- | --- | ----- + /// `m.number_from_month()`: | 1 | 2 | `...` | 12 + #[inline] + pub fn number_from_month(&self) -> u32 { + match *self { + Month::January => 1, + Month::February => 2, + Month::March => 3, + Month::April => 4, + Month::May => 5, + Month::June => 6, + Month::July => 7, + Month::August => 8, + Month::September => 9, + Month::October => 10, + Month::November => 11, + Month::December => 12, + } + } + + /// Get the name of the month + /// + /// ``` + /// use chrono::Month; + /// + /// assert_eq!(Month::January.name(), "January") + /// ``` + pub fn name(&self) -> &'static str { + match *self { + Month::January => "January", + Month::February => "February", + Month::March => "March", + Month::April => "April", + Month::May => "May", + Month::June => "June", + Month::July => "July", + Month::August => "August", + Month::September => "September", + Month::October => "October", + Month::November => "November", + Month::December => "December", + } + } +} + +impl num_traits::FromPrimitive for Month { + /// Returns an `Option` from a i64, assuming a 1-index, January = 1. + /// + /// `Month::from_i64(n: i64)`: | `1` | `2` | ... | `12` + /// ---------------------------| -------------------- | --------------------- | ... | ----- + /// ``: | Some(Month::January) | Some(Month::February) | ... | Some(Month::December) + + #[inline] + fn from_u64(n: u64) -> Option { + Self::from_u32(n as u32) + } + + #[inline] + fn from_i64(n: i64) -> Option { + Self::from_u32(n as u32) + } + + #[inline] + fn from_u32(n: u32) -> Option { + match n { + 1 => Some(Month::January), + 2 => Some(Month::February), + 3 => Some(Month::March), + 4 => Some(Month::April), + 5 => Some(Month::May), + 6 => Some(Month::June), + 7 => Some(Month::July), + 8 => Some(Month::August), + 9 => Some(Month::September), + 10 => Some(Month::October), + 11 => Some(Month::November), + 12 => Some(Month::December), + _ => None, + } + } +} + +/// A duration in calendar months +#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, PartialOrd)] +#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))] +pub struct Months(pub(crate) u32); + +impl Months { + /// Construct a new `Months` from a number of months + pub fn new(num: u32) -> Self { + Self(num) + } +} + +/// An error resulting from reading `` value with `FromStr`. +#[derive(Clone, PartialEq, Eq)] +pub struct ParseMonthError { + pub(crate) _dummy: (), +} + +impl fmt::Debug for ParseMonthError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "ParseMonthError {{ .. }}") + } +} + +#[cfg(feature = "serde")] +#[cfg_attr(docsrs, doc(cfg(feature = "serde")))] +mod month_serde { + use super::Month; + use serde::{de, ser}; + + use core::fmt; + + impl ser::Serialize for Month { + fn serialize(&self, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.collect_str(self.name()) + } + } + + struct MonthVisitor; + + impl<'de> de::Visitor<'de> for MonthVisitor { + type Value = Month; + + fn expecting(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.write_str("Month") + } + + fn visit_str(self, value: &str) -> Result + where + E: de::Error, + { + value.parse().map_err(|_| E::custom("short (3-letter) or full month names expected")) + } + } + + impl<'de> de::Deserialize<'de> for Month { + fn deserialize(deserializer: D) -> Result + where + D: de::Deserializer<'de>, + { + deserializer.deserialize_str(MonthVisitor) + } + } + + #[test] + fn test_serde_serialize() { + use serde_json::to_string; + use Month::*; + + let cases: Vec<(Month, &str)> = vec![ + (January, "\"January\""), + (February, "\"February\""), + (March, "\"March\""), + (April, "\"April\""), + (May, "\"May\""), + (June, "\"June\""), + (July, "\"July\""), + (August, "\"August\""), + (September, "\"September\""), + (October, "\"October\""), + (November, "\"November\""), + (December, "\"December\""), + ]; + + for (month, expected_str) in cases { + let string = to_string(&month).unwrap(); + assert_eq!(string, expected_str); + } + } + + #[test] + fn test_serde_deserialize() { + use serde_json::from_str; + use Month::*; + + let cases: Vec<(&str, Month)> = vec![ + ("\"january\"", January), + ("\"jan\"", January), + ("\"FeB\"", February), + ("\"MAR\"", March), + ("\"mar\"", March), + ("\"april\"", April), + ("\"may\"", May), + ("\"june\"", June), + ("\"JULY\"", July), + ("\"august\"", August), + ("\"september\"", September), + ("\"October\"", October), + ("\"November\"", November), + ("\"DECEmbEr\"", December), + ]; + + for (string, expected_month) in cases { + let month = from_str::(string).unwrap(); + assert_eq!(month, expected_month); + } + + let errors: Vec<&str> = + vec!["\"not a month\"", "\"ja\"", "\"Dece\"", "Dec", "\"Augustin\""]; + + for string in errors { + from_str::(string).unwrap_err(); + } + } +} + +#[cfg(test)] +mod tests { + use super::Month; + use crate::{Datelike, TimeZone, Utc}; + + #[test] + fn test_month_enum_primitive_parse() { + use num_traits::FromPrimitive; + + let jan_opt = Month::from_u32(1); + let feb_opt = Month::from_u64(2); + let dec_opt = Month::from_i64(12); + let no_month = Month::from_u32(13); + assert_eq!(jan_opt, Some(Month::January)); + assert_eq!(feb_opt, Some(Month::February)); + assert_eq!(dec_opt, Some(Month::December)); + assert_eq!(no_month, None); + + let date = Utc.with_ymd_and_hms(2019, 10, 28, 9, 10, 11).unwrap(); + assert_eq!(Month::from_u32(date.month()), Some(Month::October)); + + let month = Month::January; + let dt = Utc.with_ymd_and_hms(2019, month.number_from_month(), 28, 9, 10, 11).unwrap(); + assert_eq!((dt.year(), dt.month(), dt.day()), (2019, 1, 28)); + } + + #[test] + fn test_month_enum_succ_pred() { + assert_eq!(Month::January.succ(), Month::February); + assert_eq!(Month::December.succ(), Month::January); + assert_eq!(Month::January.pred(), Month::December); + assert_eq!(Month::February.pred(), Month::January); + } +} diff --git a/javascript-engine/external/chrono/src/naive/date.rs b/javascript-engine/external/chrono/src/naive/date.rs new file mode 100644 index 0000000..3734460 --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/date.rs @@ -0,0 +1,2909 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! ISO 8601 calendar date without timezone. + +#[cfg(any(feature = "alloc", feature = "std", test))] +use core::borrow::Borrow; +use core::convert::TryFrom; +use core::ops::{Add, AddAssign, RangeInclusive, Sub, SubAssign}; +use core::{fmt, str}; + +use num_integer::div_mod_floor; +use num_traits::ToPrimitive; +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +/// L10n locales. +#[cfg(feature = "unstable-locales")] +use pure_rust_locales::Locale; + +#[cfg(any(feature = "alloc", feature = "std", test))] +use crate::format::DelayedFormat; +use crate::format::{parse, write_hundreds, ParseError, ParseResult, Parsed, StrftimeItems}; +use crate::format::{Item, Numeric, Pad}; +use crate::month::Months; +use crate::naive::{IsoWeek, NaiveDateTime, NaiveTime}; +use crate::oldtime::Duration as OldDuration; +use crate::{Datelike, Duration, Weekday}; + +use super::internals::{self, DateImpl, Mdf, Of, YearFlags}; +use super::isoweek; + +const MAX_YEAR: i32 = internals::MAX_YEAR; +const MIN_YEAR: i32 = internals::MIN_YEAR; + +// MAX_YEAR-12-31 minus 0000-01-01 +// = ((MAX_YEAR+1)-01-01 minus 0001-01-01) + (0001-01-01 minus 0000-01-01) - 1 day +// = ((MAX_YEAR+1)-01-01 minus 0001-01-01) + 365 days +// = MAX_YEAR * 365 + (# of leap years from 0001 to MAX_YEAR) + 365 days +#[cfg(test)] // only used for testing +const MAX_DAYS_FROM_YEAR_0: i32 = + MAX_YEAR * 365 + MAX_YEAR / 4 - MAX_YEAR / 100 + MAX_YEAR / 400 + 365; + +// MIN_YEAR-01-01 minus 0000-01-01 +// = (MIN_YEAR+400n+1)-01-01 minus (400n+1)-01-01 +// = ((MIN_YEAR+400n+1)-01-01 minus 0001-01-01) - ((400n+1)-01-01 minus 0001-01-01) +// = ((MIN_YEAR+400n+1)-01-01 minus 0001-01-01) - 146097n days +// +// n is set to 1000 for convenience. +#[cfg(test)] // only used for testing +const MIN_DAYS_FROM_YEAR_0: i32 = (MIN_YEAR + 400_000) * 365 + (MIN_YEAR + 400_000) / 4 + - (MIN_YEAR + 400_000) / 100 + + (MIN_YEAR + 400_000) / 400 + - 146_097_000; + +#[cfg(test)] // only used for testing, but duplicated in naive::datetime +const MAX_BITS: usize = 44; + +/// A week represented by a [`NaiveDate`] and a [`Weekday`] which is the first +/// day of the week. +#[derive(Debug)] +pub struct NaiveWeek { + date: NaiveDate, + start: Weekday, +} + +impl NaiveWeek { + /// Returns a date representing the first day of the week. + /// + /// # Examples + /// + /// ``` + /// use chrono::{NaiveDate, Weekday}; + /// + /// let date = NaiveDate::from_ymd_opt(2022, 4, 18).unwrap(); + /// let week = date.week(Weekday::Mon); + /// assert!(week.first_day() <= date); + /// ``` + #[inline] + pub fn first_day(&self) -> NaiveDate { + let start = self.start.num_days_from_monday(); + let end = self.date.weekday().num_days_from_monday(); + let days = if start > end { 7 - start + end } else { end - start }; + self.date - Duration::days(days.into()) + } + + /// Returns a date representing the last day of the week. + /// + /// # Examples + /// + /// ``` + /// use chrono::{NaiveDate, Weekday}; + /// + /// let date = NaiveDate::from_ymd_opt(2022, 4, 18).unwrap(); + /// let week = date.week(Weekday::Mon); + /// assert!(week.last_day() >= date); + /// ``` + #[inline] + pub fn last_day(&self) -> NaiveDate { + self.first_day() + Duration::days(6) + } + + /// Returns a [`RangeInclusive`] representing the whole week bounded by + /// [first_day](./struct.NaiveWeek.html#method.first_day) and + /// [last_day](./struct.NaiveWeek.html#method.last_day) functions. + /// + /// # Examples + /// + /// ``` + /// use chrono::{NaiveDate, Weekday}; + /// + /// let date = NaiveDate::from_ymd_opt(2022, 4, 18).unwrap(); + /// let week = date.week(Weekday::Mon); + /// let days = week.days(); + /// assert!(days.contains(&date)); + /// ``` + #[inline] + pub fn days(&self) -> RangeInclusive { + self.first_day()..=self.last_day() + } +} + +/// A duration in calendar days. +/// +/// This is useful because when using `Duration` it is possible +/// that adding `Duration::days(1)` doesn't increment the day value as expected due to it being a +/// fixed number of seconds. This difference applies only when dealing with `DateTime` data types +/// and in other cases `Duration::days(n)` and `Days::new(n)` are equivalent. +#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, PartialOrd)] +pub struct Days(pub(crate) u64); + +impl Days { + /// Construct a new `Days` from a number of days + pub fn new(num: u64) -> Self { + Self(num) + } +} + +/// ISO 8601 calendar date without timezone. +/// Allows for every [proleptic Gregorian date](#calendar-date) +/// from Jan 1, 262145 BCE to Dec 31, 262143 CE. +/// Also supports the conversion from ISO 8601 ordinal and week date. +/// +/// # Calendar Date +/// +/// The ISO 8601 **calendar date** follows the proleptic Gregorian calendar. +/// It is like a normal civil calendar but note some slight differences: +/// +/// * Dates before the Gregorian calendar's inception in 1582 are defined via the extrapolation. +/// Be careful, as historical dates are often noted in the Julian calendar and others +/// and the transition to Gregorian may differ across countries (as late as early 20C). +/// +/// (Some example: Both Shakespeare from Britain and Cervantes from Spain seemingly died +/// on the same calendar date---April 23, 1616---but in the different calendar. +/// Britain used the Julian calendar at that time, so Shakespeare's death is later.) +/// +/// * ISO 8601 calendars has the year 0, which is 1 BCE (a year before 1 CE). +/// If you need a typical BCE/BC and CE/AD notation for year numbers, +/// use the [`Datelike::year_ce`](../trait.Datelike.html#method.year_ce) method. +/// +/// # Week Date +/// +/// The ISO 8601 **week date** is a triple of year number, week number +/// and [day of the week](../enum.Weekday.html) with the following rules: +/// +/// * A week consists of Monday through Sunday, and is always numbered within some year. +/// The week number ranges from 1 to 52 or 53 depending on the year. +/// +/// * The week 1 of given year is defined as the first week containing January 4 of that year, +/// or equivalently, the first week containing four or more days in that year. +/// +/// * The year number in the week date may *not* correspond to the actual Gregorian year. +/// For example, January 3, 2016 (Sunday) was on the last (53rd) week of 2015. +/// +/// Chrono's date types default to the ISO 8601 [calendar date](#calendar-date), +/// but [`Datelike::iso_week`](../trait.Datelike.html#tymethod.iso_week) and +/// [`Datelike::weekday`](../trait.Datelike.html#tymethod.weekday) methods +/// can be used to get the corresponding week date. +/// +/// # Ordinal Date +/// +/// The ISO 8601 **ordinal date** is a pair of year number and day of the year ("ordinal"). +/// The ordinal number ranges from 1 to 365 or 366 depending on the year. +/// The year number is the same as that of the [calendar date](#calendar-date). +/// +/// This is currently the internal format of Chrono's date types. +#[derive(PartialEq, Eq, Hash, PartialOrd, Ord, Copy, Clone)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +pub struct NaiveDate { + ymdf: DateImpl, // (year << 13) | of +} + +/// The minimum possible `NaiveDate` (January 1, 262145 BCE). +#[deprecated(since = "0.4.20", note = "Use NaiveDate::MIN instead")] +pub const MIN_DATE: NaiveDate = NaiveDate::MIN; +/// The maximum possible `NaiveDate` (December 31, 262143 CE). +#[deprecated(since = "0.4.20", note = "Use NaiveDate::MAX instead")] +pub const MAX_DATE: NaiveDate = NaiveDate::MAX; + +#[cfg(feature = "arbitrary")] +impl arbitrary::Arbitrary<'_> for NaiveDate { + fn arbitrary(u: &mut arbitrary::Unstructured) -> arbitrary::Result { + let year = u.int_in_range(MIN_YEAR..=MAX_YEAR)?; + let max_days = YearFlags::from_year(year).ndays(); + let ord = u.int_in_range(1..=max_days)?; + NaiveDate::from_yo_opt(year, ord).ok_or(arbitrary::Error::IncorrectFormat) + } +} + +// as it is hard to verify year flags in `NaiveDate::MIN` and `NaiveDate::MAX`, +// we use a separate run-time test. +#[test] +fn test_date_bounds() { + let calculated_min = NaiveDate::from_ymd_opt(MIN_YEAR, 1, 1).unwrap(); + let calculated_max = NaiveDate::from_ymd_opt(MAX_YEAR, 12, 31).unwrap(); + assert!( + NaiveDate::MIN == calculated_min, + "`NaiveDate::MIN` should have a year flag {:?}", + calculated_min.of().flags() + ); + assert!( + NaiveDate::MAX == calculated_max, + "`NaiveDate::MAX` should have a year flag {:?}", + calculated_max.of().flags() + ); + + // let's also check that the entire range do not exceed 2^44 seconds + // (sometimes used for bounding `Duration` against overflow) + let maxsecs = NaiveDate::MAX.signed_duration_since(NaiveDate::MIN).num_seconds(); + let maxsecs = maxsecs + 86401; // also take care of DateTime + assert!( + maxsecs < (1 << MAX_BITS), + "The entire `NaiveDate` range somehow exceeds 2^{} seconds", + MAX_BITS + ); +} + +impl NaiveDate { + /// Makes a new `NaiveDate` from year and packed ordinal-flags, with a verification. + fn from_of(year: i32, of: Of) -> Option { + if (MIN_YEAR..=MAX_YEAR).contains(&year) && of.valid() { + let Of(of) = of; + Some(NaiveDate { ymdf: (year << 13) | (of as DateImpl) }) + } else { + None + } + } + + /// Makes a new `NaiveDate` from year and packed month-day-flags, with a verification. + fn from_mdf(year: i32, mdf: Mdf) -> Option { + NaiveDate::from_of(year, mdf.to_of()) + } + + /// Makes a new `NaiveDate` from the [calendar date](#calendar-date) + /// (year, month and day). + /// + /// Panics on the out-of-range date, invalid month and/or day. + #[deprecated(since = "0.4.23", note = "use `from_ymd_opt()` instead")] + pub fn from_ymd(year: i32, month: u32, day: u32) -> NaiveDate { + NaiveDate::from_ymd_opt(year, month, day).expect("invalid or out-of-range date") + } + + /// Makes a new `NaiveDate` from the [calendar date](#calendar-date) + /// (year, month and day). + /// + /// Returns `None` on the out-of-range date, invalid month and/or day. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let from_ymd_opt = NaiveDate::from_ymd_opt; + /// + /// assert!(from_ymd_opt(2015, 3, 14).is_some()); + /// assert!(from_ymd_opt(2015, 0, 14).is_none()); + /// assert!(from_ymd_opt(2015, 2, 29).is_none()); + /// assert!(from_ymd_opt(-4, 2, 29).is_some()); // 5 BCE is a leap year + /// assert!(from_ymd_opt(400000, 1, 1).is_none()); + /// assert!(from_ymd_opt(-400000, 1, 1).is_none()); + /// ``` + pub fn from_ymd_opt(year: i32, month: u32, day: u32) -> Option { + let flags = YearFlags::from_year(year); + NaiveDate::from_mdf(year, Mdf::new(month, day, flags)?) + } + + /// Makes a new `NaiveDate` from the [ordinal date](#ordinal-date) + /// (year and day of the year). + /// + /// Panics on the out-of-range date and/or invalid day of year. + #[deprecated(since = "0.4.23", note = "use `from_yo_opt()` instead")] + pub fn from_yo(year: i32, ordinal: u32) -> NaiveDate { + NaiveDate::from_yo_opt(year, ordinal).expect("invalid or out-of-range date") + } + + /// Makes a new `NaiveDate` from the [ordinal date](#ordinal-date) + /// (year and day of the year). + /// + /// Returns `None` on the out-of-range date and/or invalid day of year. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let from_yo_opt = NaiveDate::from_yo_opt; + /// + /// assert!(from_yo_opt(2015, 100).is_some()); + /// assert!(from_yo_opt(2015, 0).is_none()); + /// assert!(from_yo_opt(2015, 365).is_some()); + /// assert!(from_yo_opt(2015, 366).is_none()); + /// assert!(from_yo_opt(-4, 366).is_some()); // 5 BCE is a leap year + /// assert!(from_yo_opt(400000, 1).is_none()); + /// assert!(from_yo_opt(-400000, 1).is_none()); + /// ``` + pub fn from_yo_opt(year: i32, ordinal: u32) -> Option { + let flags = YearFlags::from_year(year); + NaiveDate::from_of(year, Of::new(ordinal, flags)?) + } + + /// Makes a new `NaiveDate` from the [ISO week date](#week-date) + /// (year, week number and day of the week). + /// The resulting `NaiveDate` may have a different year from the input year. + /// + /// Panics on the out-of-range date and/or invalid week number. + #[deprecated(since = "0.4.23", note = "use `from_isoywd_opt()` instead")] + pub fn from_isoywd(year: i32, week: u32, weekday: Weekday) -> NaiveDate { + NaiveDate::from_isoywd_opt(year, week, weekday).expect("invalid or out-of-range date") + } + + /// Makes a new `NaiveDate` from the [ISO week date](#week-date) + /// (year, week number and day of the week). + /// The resulting `NaiveDate` may have a different year from the input year. + /// + /// Returns `None` on the out-of-range date and/or invalid week number. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Weekday}; + /// + /// let from_ymd = NaiveDate::from_ymd; + /// let from_isoywd_opt = NaiveDate::from_isoywd_opt; + /// + /// assert_eq!(from_isoywd_opt(2015, 0, Weekday::Sun), None); + /// assert_eq!(from_isoywd_opt(2015, 10, Weekday::Sun), Some(from_ymd(2015, 3, 8))); + /// assert_eq!(from_isoywd_opt(2015, 30, Weekday::Mon), Some(from_ymd(2015, 7, 20))); + /// assert_eq!(from_isoywd_opt(2015, 60, Weekday::Mon), None); + /// + /// assert_eq!(from_isoywd_opt(400000, 10, Weekday::Fri), None); + /// assert_eq!(from_isoywd_opt(-400000, 10, Weekday::Sat), None); + /// ``` + /// + /// The year number of ISO week date may differ from that of the calendar date. + /// + /// ``` + /// # use chrono::{NaiveDate, Weekday}; + /// # let from_ymd = NaiveDate::from_ymd; + /// # let from_isoywd_opt = NaiveDate::from_isoywd_opt; + /// // Mo Tu We Th Fr Sa Su + /// // 2014-W52 22 23 24 25 26 27 28 has 4+ days of new year, + /// // 2015-W01 29 30 31 1 2 3 4 <- so this is the first week + /// assert_eq!(from_isoywd_opt(2014, 52, Weekday::Sun), Some(from_ymd(2014, 12, 28))); + /// assert_eq!(from_isoywd_opt(2014, 53, Weekday::Mon), None); + /// assert_eq!(from_isoywd_opt(2015, 1, Weekday::Mon), Some(from_ymd(2014, 12, 29))); + /// + /// // 2015-W52 21 22 23 24 25 26 27 has 4+ days of old year, + /// // 2015-W53 28 29 30 31 1 2 3 <- so this is the last week + /// // 2016-W01 4 5 6 7 8 9 10 + /// assert_eq!(from_isoywd_opt(2015, 52, Weekday::Sun), Some(from_ymd(2015, 12, 27))); + /// assert_eq!(from_isoywd_opt(2015, 53, Weekday::Sun), Some(from_ymd(2016, 1, 3))); + /// assert_eq!(from_isoywd_opt(2015, 54, Weekday::Mon), None); + /// assert_eq!(from_isoywd_opt(2016, 1, Weekday::Mon), Some(from_ymd(2016, 1, 4))); + /// ``` + pub fn from_isoywd_opt(year: i32, week: u32, weekday: Weekday) -> Option { + let flags = YearFlags::from_year(year); + let nweeks = flags.nisoweeks(); + if 1 <= week && week <= nweeks { + // ordinal = week ordinal - delta + let weekord = week * 7 + weekday as u32; + let delta = flags.isoweek_delta(); + if weekord <= delta { + // ordinal < 1, previous year + let prevflags = YearFlags::from_year(year - 1); + NaiveDate::from_of( + year - 1, + Of::new(weekord + prevflags.ndays() - delta, prevflags)?, + ) + } else { + let ordinal = weekord - delta; + let ndays = flags.ndays(); + if ordinal <= ndays { + // this year + NaiveDate::from_of(year, Of::new(ordinal, flags)?) + } else { + // ordinal > ndays, next year + let nextflags = YearFlags::from_year(year + 1); + NaiveDate::from_of(year + 1, Of::new(ordinal - ndays, nextflags)?) + } + } + } else { + None + } + } + + /// Makes a new `NaiveDate` from a day's number in the proleptic Gregorian calendar, with + /// January 1, 1 being day 1. + /// + /// Panics if the date is out of range. + #[deprecated(since = "0.4.23", note = "use `from_num_days_from_ce_opt()` instead")] + #[inline] + pub fn from_num_days_from_ce(days: i32) -> NaiveDate { + NaiveDate::from_num_days_from_ce_opt(days).expect("out-of-range date") + } + + /// Makes a new `NaiveDate` from a day's number in the proleptic Gregorian calendar, with + /// January 1, 1 being day 1. + /// + /// Returns `None` if the date is out of range. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let from_ndays_opt = NaiveDate::from_num_days_from_ce_opt; + /// let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); + /// + /// assert_eq!(from_ndays_opt(730_000), Some(from_ymd(1999, 9, 3))); + /// assert_eq!(from_ndays_opt(1), Some(from_ymd(1, 1, 1))); + /// assert_eq!(from_ndays_opt(0), Some(from_ymd(0, 12, 31))); + /// assert_eq!(from_ndays_opt(-1), Some(from_ymd(0, 12, 30))); + /// assert_eq!(from_ndays_opt(100_000_000), None); + /// assert_eq!(from_ndays_opt(-100_000_000), None); + /// ``` + pub fn from_num_days_from_ce_opt(days: i32) -> Option { + let days = days + 365; // make December 31, 1 BCE equal to day 0 + let (year_div_400, cycle) = div_mod_floor(days, 146_097); + let (year_mod_400, ordinal) = internals::cycle_to_yo(cycle as u32); + let flags = YearFlags::from_year_mod_400(year_mod_400 as i32); + NaiveDate::from_of(year_div_400 * 400 + year_mod_400 as i32, Of::new(ordinal, flags)?) + } + + /// Makes a new `NaiveDate` by counting the number of occurrences of a particular day-of-week + /// since the beginning of the given month. For instance, if you want the 2nd Friday of March + /// 2017, you would use `NaiveDate::from_weekday_of_month(2017, 3, Weekday::Fri, 2)`. + /// + /// # Panics + /// + /// The resulting `NaiveDate` is guaranteed to be in `month`. If `n` is larger than the number + /// of `weekday` in `month` (eg. the 6th Friday of March 2017) then this function will panic. + /// + /// `n` is 1-indexed. Passing `n=0` will cause a panic. + #[deprecated(since = "0.4.23", note = "use `from_weekday_of_month_opt()` instead")] + pub fn from_weekday_of_month(year: i32, month: u32, weekday: Weekday, n: u8) -> NaiveDate { + NaiveDate::from_weekday_of_month_opt(year, month, weekday, n).expect("out-of-range date") + } + + /// Makes a new `NaiveDate` by counting the number of occurrences of a particular day-of-week + /// since the beginning of the given month. For instance, if you want the 2nd Friday of March + /// 2017, you would use `NaiveDate::from_weekday_of_month(2017, 3, Weekday::Fri, 2)`. `n` is 1-indexed. + /// + /// ``` + /// use chrono::{NaiveDate, Weekday}; + /// assert_eq!(NaiveDate::from_weekday_of_month_opt(2017, 3, Weekday::Fri, 2), + /// NaiveDate::from_ymd_opt(2017, 3, 10)) + /// ``` + /// + /// Returns `None` if `n` out-of-range; ie. if `n` is larger than the number of `weekday` in + /// `month` (eg. the 6th Friday of March 2017), or if `n == 0`. + pub fn from_weekday_of_month_opt( + year: i32, + month: u32, + weekday: Weekday, + n: u8, + ) -> Option { + if n == 0 { + return None; + } + let first = NaiveDate::from_ymd_opt(year, month, 1)?.weekday(); + let first_to_dow = (7 + weekday.number_from_monday() - first.number_from_monday()) % 7; + let day = (u32::from(n) - 1) * 7 + first_to_dow + 1; + NaiveDate::from_ymd_opt(year, month, day) + } + + /// Parses a string with the specified format string and returns a new `NaiveDate`. + /// See the [`format::strftime` module](../format/strftime/index.html) + /// on the supported escape sequences. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let parse_from_str = NaiveDate::parse_from_str; + /// + /// assert_eq!(parse_from_str("2015-09-05", "%Y-%m-%d"), + /// Ok(NaiveDate::from_ymd_opt(2015, 9, 5).unwrap())); + /// assert_eq!(parse_from_str("5sep2015", "%d%b%Y"), + /// Ok(NaiveDate::from_ymd_opt(2015, 9, 5).unwrap())); + /// ``` + /// + /// Time and offset is ignored for the purpose of parsing. + /// + /// ``` + /// # use chrono::NaiveDate; + /// # let parse_from_str = NaiveDate::parse_from_str; + /// assert_eq!(parse_from_str("2014-5-17T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), + /// Ok(NaiveDate::from_ymd_opt(2014, 5, 17).unwrap())); + /// ``` + /// + /// Out-of-bound dates or insufficient fields are errors. + /// + /// ``` + /// # use chrono::NaiveDate; + /// # let parse_from_str = NaiveDate::parse_from_str; + /// assert!(parse_from_str("2015/9", "%Y/%m").is_err()); + /// assert!(parse_from_str("2015/9/31", "%Y/%m/%d").is_err()); + /// ``` + /// + /// All parsed fields should be consistent to each other, otherwise it's an error. + /// + /// ``` + /// # use chrono::NaiveDate; + /// # let parse_from_str = NaiveDate::parse_from_str; + /// assert!(parse_from_str("Sat, 09 Aug 2013", "%a, %d %b %Y").is_err()); + /// ``` + pub fn parse_from_str(s: &str, fmt: &str) -> ParseResult { + let mut parsed = Parsed::new(); + parse(&mut parsed, s, StrftimeItems::new(fmt))?; + parsed.to_naive_date() + } + + /// Add a duration in [`Months`] to the date + /// + /// If the day would be out of range for the resulting month, use the last day for that month. + /// + /// Returns `None` if the resulting date would be out of range. + /// + /// ``` + /// # use chrono::{NaiveDate, Months}; + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2022, 2, 20).unwrap().checked_add_months(Months::new(6)), + /// Some(NaiveDate::from_ymd_opt(2022, 8, 20).unwrap()) + /// ); + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2022, 7, 31).unwrap().checked_add_months(Months::new(2)), + /// Some(NaiveDate::from_ymd_opt(2022, 9, 30).unwrap()) + /// ); + /// ``` + pub fn checked_add_months(self, months: Months) -> Option { + if months.0 == 0 { + return Some(self); + } + + match months.0 <= core::i32::MAX as u32 { + true => self.diff_months(months.0 as i32), + false => None, + } + } + + /// Subtract a duration in [`Months`] from the date + /// + /// If the day would be out of range for the resulting month, use the last day for that month. + /// + /// Returns `None` if the resulting date would be out of range. + /// + /// ``` + /// # use chrono::{NaiveDate, Months}; + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2022, 2, 20).unwrap().checked_sub_months(Months::new(6)), + /// Some(NaiveDate::from_ymd_opt(2021, 8, 20).unwrap()) + /// ); + /// + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap() + /// .checked_sub_months(Months::new(core::i32::MAX as u32 + 1)), + /// None + /// ); + /// ``` + pub fn checked_sub_months(self, months: Months) -> Option { + if months.0 == 0 { + return Some(self); + } + + // Copy `i32::MAX` here so we don't have to do a complicated cast + match months.0 <= 2_147_483_647 { + true => self.diff_months(-(months.0 as i32)), + false => None, + } + } + + fn diff_months(self, months: i32) -> Option { + let (years, left) = ((months / 12), (months % 12)); + + // Determine new year (without taking months into account for now + + let year = if (years > 0 && years > (MAX_YEAR - self.year())) + || (years < 0 && years < (MIN_YEAR - self.year())) + { + return None; + } else { + self.year() + years + }; + + // Determine new month + + let month = self.month() as i32 + left; + let (year, month) = if month <= 0 { + if year == MIN_YEAR { + return None; + } + + (year - 1, month + 12) + } else if month > 12 { + if year == MAX_YEAR { + return None; + } + + (year + 1, month - 12) + } else { + (year, month) + }; + + // Clamp original day in case new month is shorter + + let flags = YearFlags::from_year(year); + let feb_days = if flags.ndays() == 366 { 29 } else { 28 }; + let days = [31, feb_days, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]; + let day = Ord::min(self.day(), days[(month - 1) as usize]); + + NaiveDate::from_mdf(year, Mdf::new(month as u32, day, flags)?) + } + + /// Add a duration in [`Days`] to the date + /// + /// Returns `None` if the resulting date would be out of range. + /// + /// ``` + /// # use chrono::{NaiveDate, Days}; + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2022, 2, 20).unwrap().checked_add_days(Days::new(9)), + /// Some(NaiveDate::from_ymd_opt(2022, 3, 1).unwrap()) + /// ); + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2022, 7, 31).unwrap().checked_add_days(Days::new(2)), + /// Some(NaiveDate::from_ymd_opt(2022, 8, 2).unwrap()) + /// ); + /// ``` + pub fn checked_add_days(self, days: Days) -> Option { + if days.0 == 0 { + return Some(self); + } + + i64::try_from(days.0).ok().and_then(|d| self.diff_days(d)) + } + + /// Subtract a duration in [`Days`] from the date + /// + /// Returns `None` if the resulting date would be out of range. + /// + /// ``` + /// # use chrono::{NaiveDate, Days}; + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2022, 2, 20).unwrap().checked_sub_days(Days::new(6)), + /// Some(NaiveDate::from_ymd_opt(2022, 2, 14).unwrap()) + /// ); + /// ``` + pub fn checked_sub_days(self, days: Days) -> Option { + if days.0 == 0 { + return Some(self); + } + + i64::try_from(days.0).ok().and_then(|d| self.diff_days(-d)) + } + + fn diff_days(self, days: i64) -> Option { + self.checked_add_signed(Duration::days(days)) + } + + /// Makes a new `NaiveDateTime` from the current date and given `NaiveTime`. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveTime, NaiveDateTime}; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); + /// let t = NaiveTime::from_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// + /// let dt: NaiveDateTime = d.and_time(t); + /// assert_eq!(dt.date(), d); + /// assert_eq!(dt.time(), t); + /// ``` + #[inline] + pub fn and_time(&self, time: NaiveTime) -> NaiveDateTime { + NaiveDateTime::new(*self, time) + } + + /// Makes a new `NaiveDateTime` from the current date, hour, minute and second. + /// + /// No [leap second](./struct.NaiveTime.html#leap-second-handling) is allowed here; + /// use `NaiveDate::and_hms_*` methods with a subsecond parameter instead. + /// + /// Panics on invalid hour, minute and/or second. + #[deprecated(since = "0.4.23", note = "use `and_hms_opt()` instead")] + #[inline] + pub fn and_hms(&self, hour: u32, min: u32, sec: u32) -> NaiveDateTime { + self.and_hms_opt(hour, min, sec).expect("invalid time") + } + + /// Makes a new `NaiveDateTime` from the current date, hour, minute and second. + /// + /// No [leap second](./struct.NaiveTime.html#leap-second-handling) is allowed here; + /// use `NaiveDate::and_hms_*_opt` methods with a subsecond parameter instead. + /// + /// Returns `None` on invalid hour, minute and/or second. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); + /// assert!(d.and_hms_opt(12, 34, 56).is_some()); + /// assert!(d.and_hms_opt(12, 34, 60).is_none()); // use `and_hms_milli_opt` instead + /// assert!(d.and_hms_opt(12, 60, 56).is_none()); + /// assert!(d.and_hms_opt(24, 34, 56).is_none()); + /// ``` + #[inline] + pub fn and_hms_opt(&self, hour: u32, min: u32, sec: u32) -> Option { + NaiveTime::from_hms_opt(hour, min, sec).map(|time| self.and_time(time)) + } + + /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and millisecond. + /// + /// The millisecond part can exceed 1,000 + /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). + /// + /// Panics on invalid hour, minute, second and/or millisecond. + #[deprecated(since = "0.4.23", note = "use `and_hms_milli_opt()` instead")] + #[inline] + pub fn and_hms_milli(&self, hour: u32, min: u32, sec: u32, milli: u32) -> NaiveDateTime { + self.and_hms_milli_opt(hour, min, sec, milli).expect("invalid time") + } + + /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and millisecond. + /// + /// The millisecond part can exceed 1,000 + /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). + /// + /// Returns `None` on invalid hour, minute, second and/or millisecond. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); + /// assert!(d.and_hms_milli_opt(12, 34, 56, 789).is_some()); + /// assert!(d.and_hms_milli_opt(12, 34, 59, 1_789).is_some()); // leap second + /// assert!(d.and_hms_milli_opt(12, 34, 59, 2_789).is_none()); + /// assert!(d.and_hms_milli_opt(12, 34, 60, 789).is_none()); + /// assert!(d.and_hms_milli_opt(12, 60, 56, 789).is_none()); + /// assert!(d.and_hms_milli_opt(24, 34, 56, 789).is_none()); + /// ``` + #[inline] + pub fn and_hms_milli_opt( + &self, + hour: u32, + min: u32, + sec: u32, + milli: u32, + ) -> Option { + NaiveTime::from_hms_milli_opt(hour, min, sec, milli).map(|time| self.and_time(time)) + } + + /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and microsecond. + /// + /// The microsecond part can exceed 1,000,000 + /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). + /// + /// Panics on invalid hour, minute, second and/or microsecond. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike, Timelike, Weekday}; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); + /// + /// let dt: NaiveDateTime = d.and_hms_micro(12, 34, 56, 789_012); + /// assert_eq!(dt.year(), 2015); + /// assert_eq!(dt.weekday(), Weekday::Wed); + /// assert_eq!(dt.second(), 56); + /// assert_eq!(dt.nanosecond(), 789_012_000); + /// ``` + #[deprecated(since = "0.4.23", note = "use `and_hms_micro_opt()` instead")] + #[inline] + pub fn and_hms_micro(&self, hour: u32, min: u32, sec: u32, micro: u32) -> NaiveDateTime { + self.and_hms_micro_opt(hour, min, sec, micro).expect("invalid time") + } + + /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and microsecond. + /// + /// The microsecond part can exceed 1,000,000 + /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). + /// + /// Returns `None` on invalid hour, minute, second and/or microsecond. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); + /// assert!(d.and_hms_micro_opt(12, 34, 56, 789_012).is_some()); + /// assert!(d.and_hms_micro_opt(12, 34, 59, 1_789_012).is_some()); // leap second + /// assert!(d.and_hms_micro_opt(12, 34, 59, 2_789_012).is_none()); + /// assert!(d.and_hms_micro_opt(12, 34, 60, 789_012).is_none()); + /// assert!(d.and_hms_micro_opt(12, 60, 56, 789_012).is_none()); + /// assert!(d.and_hms_micro_opt(24, 34, 56, 789_012).is_none()); + /// ``` + #[inline] + pub fn and_hms_micro_opt( + &self, + hour: u32, + min: u32, + sec: u32, + micro: u32, + ) -> Option { + NaiveTime::from_hms_micro_opt(hour, min, sec, micro).map(|time| self.and_time(time)) + } + + /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and nanosecond. + /// + /// The nanosecond part can exceed 1,000,000,000 + /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). + /// + /// Panics on invalid hour, minute, second and/or nanosecond. + #[deprecated(since = "0.4.23", note = "use `and_hms_nano_opt()` instead")] + #[inline] + pub fn and_hms_nano(&self, hour: u32, min: u32, sec: u32, nano: u32) -> NaiveDateTime { + self.and_hms_nano_opt(hour, min, sec, nano).expect("invalid time") + } + + /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and nanosecond. + /// + /// The nanosecond part can exceed 1,000,000,000 + /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). + /// + /// Returns `None` on invalid hour, minute, second and/or nanosecond. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); + /// assert!(d.and_hms_nano_opt(12, 34, 56, 789_012_345).is_some()); + /// assert!(d.and_hms_nano_opt(12, 34, 59, 1_789_012_345).is_some()); // leap second + /// assert!(d.and_hms_nano_opt(12, 34, 59, 2_789_012_345).is_none()); + /// assert!(d.and_hms_nano_opt(12, 34, 60, 789_012_345).is_none()); + /// assert!(d.and_hms_nano_opt(12, 60, 56, 789_012_345).is_none()); + /// assert!(d.and_hms_nano_opt(24, 34, 56, 789_012_345).is_none()); + /// ``` + #[inline] + pub fn and_hms_nano_opt( + &self, + hour: u32, + min: u32, + sec: u32, + nano: u32, + ) -> Option { + NaiveTime::from_hms_nano_opt(hour, min, sec, nano).map(|time| self.and_time(time)) + } + + /// Returns the packed month-day-flags. + #[inline] + fn mdf(&self) -> Mdf { + self.of().to_mdf() + } + + /// Returns the packed ordinal-flags. + #[inline] + fn of(&self) -> Of { + Of((self.ymdf & 0b1_1111_1111_1111) as u32) + } + + /// Makes a new `NaiveDate` with the packed month-day-flags changed. + /// + /// Returns `None` when the resulting `NaiveDate` would be invalid. + #[inline] + fn with_mdf(&self, mdf: Mdf) -> Option { + self.with_of(mdf.to_of()) + } + + /// Makes a new `NaiveDate` with the packed ordinal-flags changed. + /// + /// Returns `None` when the resulting `NaiveDate` would be invalid. + #[inline] + fn with_of(&self, of: Of) -> Option { + if of.valid() { + let Of(of) = of; + Some(NaiveDate { ymdf: (self.ymdf & !0b1_1111_1111_1111) | of as DateImpl }) + } else { + None + } + } + + /// Makes a new `NaiveDate` for the next calendar date. + /// + /// Panics when `self` is the last representable date. + #[deprecated(since = "0.4.23", note = "use `succ_opt()` instead")] + #[inline] + pub fn succ(&self) -> NaiveDate { + self.succ_opt().expect("out of bound") + } + + /// Makes a new `NaiveDate` for the next calendar date. + /// + /// Returns `None` when `self` is the last representable date. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 6, 3).unwrap().succ_opt(), + /// Some(NaiveDate::from_ymd_opt(2015, 6, 4).unwrap())); + /// assert_eq!(NaiveDate::MAX.succ_opt(), None); + /// ``` + #[inline] + pub fn succ_opt(&self) -> Option { + self.with_of(self.of().succ()).or_else(|| NaiveDate::from_ymd_opt(self.year() + 1, 1, 1)) + } + + /// Makes a new `NaiveDate` for the previous calendar date. + /// + /// Panics when `self` is the first representable date. + #[deprecated(since = "0.4.23", note = "use `pred_opt()` instead")] + #[inline] + pub fn pred(&self) -> NaiveDate { + self.pred_opt().expect("out of bound") + } + + /// Makes a new `NaiveDate` for the previous calendar date. + /// + /// Returns `None` when `self` is the first representable date. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 6, 3).unwrap().pred_opt(), + /// Some(NaiveDate::from_ymd_opt(2015, 6, 2).unwrap())); + /// assert_eq!(NaiveDate::MIN.pred_opt(), None); + /// ``` + #[inline] + pub fn pred_opt(&self) -> Option { + self.with_of(self.of().pred()).or_else(|| NaiveDate::from_ymd_opt(self.year() - 1, 12, 31)) + } + + /// Adds the `days` part of given `Duration` to the current date. + /// + /// Returns `None` when it will result in overflow. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveDate}; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); + /// assert_eq!(d.checked_add_signed(Duration::days(40)), + /// Some(NaiveDate::from_ymd_opt(2015, 10, 15).unwrap())); + /// assert_eq!(d.checked_add_signed(Duration::days(-40)), + /// Some(NaiveDate::from_ymd_opt(2015, 7, 27).unwrap())); + /// assert_eq!(d.checked_add_signed(Duration::days(1_000_000_000)), None); + /// assert_eq!(d.checked_add_signed(Duration::days(-1_000_000_000)), None); + /// assert_eq!(NaiveDate::MAX.checked_add_signed(Duration::days(1)), None); + /// ``` + pub fn checked_add_signed(self, rhs: OldDuration) -> Option { + let year = self.year(); + let (mut year_div_400, year_mod_400) = div_mod_floor(year, 400); + let cycle = internals::yo_to_cycle(year_mod_400 as u32, self.of().ordinal()); + let cycle = (cycle as i32).checked_add(rhs.num_days().to_i32()?)?; + let (cycle_div_400y, cycle) = div_mod_floor(cycle, 146_097); + year_div_400 += cycle_div_400y; + + let (year_mod_400, ordinal) = internals::cycle_to_yo(cycle as u32); + let flags = YearFlags::from_year_mod_400(year_mod_400 as i32); + NaiveDate::from_of(year_div_400 * 400 + year_mod_400 as i32, Of::new(ordinal, flags)?) + } + + /// Subtracts the `days` part of given `Duration` from the current date. + /// + /// Returns `None` when it will result in overflow. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveDate}; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); + /// assert_eq!(d.checked_sub_signed(Duration::days(40)), + /// Some(NaiveDate::from_ymd_opt(2015, 7, 27).unwrap())); + /// assert_eq!(d.checked_sub_signed(Duration::days(-40)), + /// Some(NaiveDate::from_ymd_opt(2015, 10, 15).unwrap())); + /// assert_eq!(d.checked_sub_signed(Duration::days(1_000_000_000)), None); + /// assert_eq!(d.checked_sub_signed(Duration::days(-1_000_000_000)), None); + /// assert_eq!(NaiveDate::MIN.checked_sub_signed(Duration::days(1)), None); + /// ``` + pub fn checked_sub_signed(self, rhs: OldDuration) -> Option { + let year = self.year(); + let (mut year_div_400, year_mod_400) = div_mod_floor(year, 400); + let cycle = internals::yo_to_cycle(year_mod_400 as u32, self.of().ordinal()); + let cycle = (cycle as i32).checked_sub(rhs.num_days().to_i32()?)?; + let (cycle_div_400y, cycle) = div_mod_floor(cycle, 146_097); + year_div_400 += cycle_div_400y; + + let (year_mod_400, ordinal) = internals::cycle_to_yo(cycle as u32); + let flags = YearFlags::from_year_mod_400(year_mod_400 as i32); + NaiveDate::from_of(year_div_400 * 400 + year_mod_400 as i32, Of::new(ordinal, flags)?) + } + + /// Subtracts another `NaiveDate` from the current date. + /// Returns a `Duration` of integral numbers. + /// + /// This does not overflow or underflow at all, + /// as all possible output fits in the range of `Duration`. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveDate}; + /// + /// let from_ymd = NaiveDate::from_ymd; + /// let since = NaiveDate::signed_duration_since; + /// + /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2014, 1, 1)), Duration::zero()); + /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2013, 12, 31)), Duration::days(1)); + /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2014, 1, 2)), Duration::days(-1)); + /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2013, 9, 23)), Duration::days(100)); + /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2013, 1, 1)), Duration::days(365)); + /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2010, 1, 1)), Duration::days(365*4 + 1)); + /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(1614, 1, 1)), Duration::days(365*400 + 97)); + /// ``` + pub fn signed_duration_since(self, rhs: NaiveDate) -> OldDuration { + let year1 = self.year(); + let year2 = rhs.year(); + let (year1_div_400, year1_mod_400) = div_mod_floor(year1, 400); + let (year2_div_400, year2_mod_400) = div_mod_floor(year2, 400); + let cycle1 = i64::from(internals::yo_to_cycle(year1_mod_400 as u32, self.of().ordinal())); + let cycle2 = i64::from(internals::yo_to_cycle(year2_mod_400 as u32, rhs.of().ordinal())); + OldDuration::days( + (i64::from(year1_div_400) - i64::from(year2_div_400)) * 146_097 + (cycle1 - cycle2), + ) + } + + /// Returns the number of whole years from the given `base` until `self`. + pub fn years_since(&self, base: Self) -> Option { + let mut years = self.year() - base.year(); + if (self.month(), self.day()) < (base.month(), base.day()) { + years -= 1; + } + + match years >= 0 { + true => Some(years as u32), + false => None, + } + } + + /// Formats the date with the specified formatting items. + /// Otherwise it is the same as the ordinary `format` method. + /// + /// The `Iterator` of items should be `Clone`able, + /// since the resulting `DelayedFormat` value may be formatted multiple times. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// use chrono::format::strftime::StrftimeItems; + /// + /// let fmt = StrftimeItems::new("%Y-%m-%d"); + /// let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); + /// assert_eq!(d.format_with_items(fmt.clone()).to_string(), "2015-09-05"); + /// assert_eq!(d.format("%Y-%m-%d").to_string(), "2015-09-05"); + /// ``` + /// + /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. + /// + /// ``` + /// # use chrono::NaiveDate; + /// # use chrono::format::strftime::StrftimeItems; + /// # let fmt = StrftimeItems::new("%Y-%m-%d").clone(); + /// # let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); + /// assert_eq!(format!("{}", d.format_with_items(fmt)), "2015-09-05"); + /// ``` + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format_with_items<'a, I, B>(&self, items: I) -> DelayedFormat + where + I: Iterator + Clone, + B: Borrow>, + { + DelayedFormat::new(Some(*self), None, items) + } + + /// Formats the date with the specified format string. + /// See the [`format::strftime` module](../format/strftime/index.html) + /// on the supported escape sequences. + /// + /// This returns a `DelayedFormat`, + /// which gets converted to a string only when actual formatting happens. + /// You may use the `to_string` method to get a `String`, + /// or just feed it into `print!` and other formatting macros. + /// (In this way it avoids the redundant memory allocation.) + /// + /// A wrong format string does *not* issue an error immediately. + /// Rather, converting or formatting the `DelayedFormat` fails. + /// You are recommended to immediately use `DelayedFormat` for this reason. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); + /// assert_eq!(d.format("%Y-%m-%d").to_string(), "2015-09-05"); + /// assert_eq!(d.format("%A, %-d %B, %C%y").to_string(), "Saturday, 5 September, 2015"); + /// ``` + /// + /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. + /// + /// ``` + /// # use chrono::NaiveDate; + /// # let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); + /// assert_eq!(format!("{}", d.format("%Y-%m-%d")), "2015-09-05"); + /// assert_eq!(format!("{}", d.format("%A, %-d %B, %C%y")), "Saturday, 5 September, 2015"); + /// ``` + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format<'a>(&self, fmt: &'a str) -> DelayedFormat> { + self.format_with_items(StrftimeItems::new(fmt)) + } + + /// Formats the date with the specified formatting items and locale. + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + #[inline] + pub fn format_localized_with_items<'a, I, B>( + &self, + items: I, + locale: Locale, + ) -> DelayedFormat + where + I: Iterator + Clone, + B: Borrow>, + { + DelayedFormat::new_with_locale(Some(*self), None, items, locale) + } + + /// Formats the date with the specified format string and locale. + /// + /// See the [`crate::format::strftime`] module on the supported escape + /// sequences. + #[cfg(feature = "unstable-locales")] + #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))] + #[inline] + pub fn format_localized<'a>( + &self, + fmt: &'a str, + locale: Locale, + ) -> DelayedFormat> { + self.format_localized_with_items(StrftimeItems::new_with_locale(fmt, locale), locale) + } + + /// Returns an iterator that steps by days across all representable dates. + /// + /// # Example + /// + /// ``` + /// # use chrono::NaiveDate; + /// + /// let expected = [ + /// NaiveDate::from_ymd_opt(2016, 2, 27).unwrap(), + /// NaiveDate::from_ymd_opt(2016, 2, 28).unwrap(), + /// NaiveDate::from_ymd_opt(2016, 2, 29).unwrap(), + /// NaiveDate::from_ymd_opt(2016, 3, 1).unwrap(), + /// ]; + /// + /// let mut count = 0; + /// for (idx, d) in NaiveDate::from_ymd_opt(2016, 2, 27).unwrap().iter_days().take(4).enumerate() { + /// assert_eq!(d, expected[idx]); + /// count += 1; + /// } + /// assert_eq!(count, 4); + /// + /// for d in NaiveDate::from_ymd_opt(2016, 3, 1).unwrap().iter_days().rev().take(4) { + /// count -= 1; + /// assert_eq!(d, expected[count]); + /// } + /// ``` + #[inline] + pub fn iter_days(&self) -> NaiveDateDaysIterator { + NaiveDateDaysIterator { value: *self } + } + + /// Returns an iterator that steps by weeks across all representable dates. + /// + /// # Example + /// + /// ``` + /// # use chrono::NaiveDate; + /// + /// let expected = [ + /// NaiveDate::from_ymd_opt(2016, 2, 27).unwrap(), + /// NaiveDate::from_ymd_opt(2016, 3, 5).unwrap(), + /// NaiveDate::from_ymd_opt(2016, 3, 12).unwrap(), + /// NaiveDate::from_ymd_opt(2016, 3, 19).unwrap(), + /// ]; + /// + /// let mut count = 0; + /// for (idx, d) in NaiveDate::from_ymd_opt(2016, 2, 27).unwrap().iter_weeks().take(4).enumerate() { + /// assert_eq!(d, expected[idx]); + /// count += 1; + /// } + /// assert_eq!(count, 4); + /// + /// for d in NaiveDate::from_ymd_opt(2016, 3, 19).unwrap().iter_weeks().rev().take(4) { + /// count -= 1; + /// assert_eq!(d, expected[count]); + /// } + /// ``` + #[inline] + pub fn iter_weeks(&self) -> NaiveDateWeeksIterator { + NaiveDateWeeksIterator { value: *self } + } + + /// Returns the [`NaiveWeek`] that the date belongs to, starting with the [`Weekday`] + /// specified. + #[inline] + pub fn week(&self, start: Weekday) -> NaiveWeek { + NaiveWeek { date: *self, start } + } + + /// The minimum possible `NaiveDate` (January 1, 262145 BCE). + pub const MIN: NaiveDate = NaiveDate { ymdf: (MIN_YEAR << 13) | (1 << 4) | 0o07 /*FE*/ }; + /// The maximum possible `NaiveDate` (December 31, 262143 CE). + pub const MAX: NaiveDate = NaiveDate { ymdf: (MAX_YEAR << 13) | (365 << 4) | 0o17 /*F*/ }; +} + +impl Datelike for NaiveDate { + /// Returns the year number in the [calendar date](#calendar-date). + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().year(), 2015); + /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().year(), -308); // 309 BCE + /// ``` + #[inline] + fn year(&self) -> i32 { + self.ymdf >> 13 + } + + /// Returns the month number starting from 1. + /// + /// The return value ranges from 1 to 12. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().month(), 9); + /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().month(), 3); + /// ``` + #[inline] + fn month(&self) -> u32 { + self.mdf().month() + } + + /// Returns the month number starting from 0. + /// + /// The return value ranges from 0 to 11. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().month0(), 8); + /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().month0(), 2); + /// ``` + #[inline] + fn month0(&self) -> u32 { + self.mdf().month() - 1 + } + + /// Returns the day of month starting from 1. + /// + /// The return value ranges from 1 to 31. (The last day of month differs by months.) + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().day(), 8); + /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().day(), 14); + /// ``` + /// + /// Combined with [`NaiveDate::pred`](#method.pred), + /// one can determine the number of days in a particular month. + /// (Note that this panics when `year` is out of range.) + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// fn ndays_in_month(year: i32, month: u32) -> u32 { + /// // the first day of the next month... + /// let (y, m) = if month == 12 { (year + 1, 1) } else { (year, month + 1) }; + /// let d = NaiveDate::from_ymd_opt(y, m, 1).unwrap(); + /// + /// // ...is preceded by the last day of the original month + /// d.pred().day() + /// } + /// + /// assert_eq!(ndays_in_month(2015, 8), 31); + /// assert_eq!(ndays_in_month(2015, 9), 30); + /// assert_eq!(ndays_in_month(2015, 12), 31); + /// assert_eq!(ndays_in_month(2016, 2), 29); + /// assert_eq!(ndays_in_month(2017, 2), 28); + /// ``` + #[inline] + fn day(&self) -> u32 { + self.mdf().day() + } + + /// Returns the day of month starting from 0. + /// + /// The return value ranges from 0 to 30. (The last day of month differs by months.) + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().day0(), 7); + /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().day0(), 13); + /// ``` + #[inline] + fn day0(&self) -> u32 { + self.mdf().day() - 1 + } + + /// Returns the day of year starting from 1. + /// + /// The return value ranges from 1 to 366. (The last day of year differs by years.) + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().ordinal(), 251); + /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().ordinal(), 74); + /// ``` + /// + /// Combined with [`NaiveDate::pred`](#method.pred), + /// one can determine the number of days in a particular year. + /// (Note that this panics when `year` is out of range.) + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// fn ndays_in_year(year: i32) -> u32 { + /// // the first day of the next year... + /// let d = NaiveDate::from_ymd_opt(year + 1, 1, 1).unwrap(); + /// + /// // ...is preceded by the last day of the original year + /// d.pred().ordinal() + /// } + /// + /// assert_eq!(ndays_in_year(2015), 365); + /// assert_eq!(ndays_in_year(2016), 366); + /// assert_eq!(ndays_in_year(2017), 365); + /// assert_eq!(ndays_in_year(2000), 366); + /// assert_eq!(ndays_in_year(2100), 365); + /// ``` + #[inline] + fn ordinal(&self) -> u32 { + self.of().ordinal() + } + + /// Returns the day of year starting from 0. + /// + /// The return value ranges from 0 to 365. (The last day of year differs by years.) + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().ordinal0(), 250); + /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().ordinal0(), 73); + /// ``` + #[inline] + fn ordinal0(&self) -> u32 { + self.of().ordinal() - 1 + } + + /// Returns the day of week. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike, Weekday}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().weekday(), Weekday::Tue); + /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().weekday(), Weekday::Fri); + /// ``` + #[inline] + fn weekday(&self) -> Weekday { + self.of().weekday() + } + + #[inline] + fn iso_week(&self) -> IsoWeek { + isoweek::iso_week_from_yof(self.year(), self.of()) + } + + /// Makes a new `NaiveDate` with the year number changed. + /// + /// Returns `None` when the resulting `NaiveDate` would be invalid. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_year(2016), + /// Some(NaiveDate::from_ymd_opt(2016, 9, 8).unwrap())); + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_year(-308), + /// Some(NaiveDate::from_ymd_opt(-308, 9, 8).unwrap())); + /// ``` + /// + /// A leap day (February 29) is a good example that this method can return `None`. + /// + /// ``` + /// # use chrono::{NaiveDate, Datelike}; + /// assert!(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap().with_year(2015).is_none()); + /// assert!(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap().with_year(2020).is_some()); + /// ``` + #[inline] + fn with_year(&self, year: i32) -> Option { + // we need to operate with `mdf` since we should keep the month and day number as is + let mdf = self.mdf(); + + // adjust the flags as needed + let flags = YearFlags::from_year(year); + let mdf = mdf.with_flags(flags); + + NaiveDate::from_mdf(year, mdf) + } + + /// Makes a new `NaiveDate` with the month number (starting from 1) changed. + /// + /// Returns `None` when the resulting `NaiveDate` would be invalid. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_month(10), + /// Some(NaiveDate::from_ymd_opt(2015, 10, 8).unwrap())); + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_month(13), None); // no month 13 + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap().with_month(2), None); // no February 30 + /// ``` + #[inline] + fn with_month(&self, month: u32) -> Option { + self.with_mdf(self.mdf().with_month(month)?) + } + + /// Makes a new `NaiveDate` with the month number (starting from 0) changed. + /// + /// Returns `None` when the resulting `NaiveDate` would be invalid. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_month0(9), + /// Some(NaiveDate::from_ymd_opt(2015, 10, 8).unwrap())); + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_month0(12), None); // no month 13 + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap().with_month0(1), None); // no February 30 + /// ``` + #[inline] + fn with_month0(&self, month0: u32) -> Option { + self.with_mdf(self.mdf().with_month(month0 + 1)?) + } + + /// Makes a new `NaiveDate` with the day of month (starting from 1) changed. + /// + /// Returns `None` when the resulting `NaiveDate` would be invalid. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_day(30), + /// Some(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap())); + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_day(31), + /// None); // no September 31 + /// ``` + #[inline] + fn with_day(&self, day: u32) -> Option { + self.with_mdf(self.mdf().with_day(day)?) + } + + /// Makes a new `NaiveDate` with the day of month (starting from 0) changed. + /// + /// Returns `None` when the resulting `NaiveDate` would be invalid. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_day0(29), + /// Some(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap())); + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_day0(30), + /// None); // no September 31 + /// ``` + #[inline] + fn with_day0(&self, day0: u32) -> Option { + self.with_mdf(self.mdf().with_day(day0 + 1)?) + } + + /// Makes a new `NaiveDate` with the day of year (starting from 1) changed. + /// + /// Returns `None` when the resulting `NaiveDate` would be invalid. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 1, 1).unwrap().with_ordinal(60), + /// Some(NaiveDate::from_ymd_opt(2015, 3, 1).unwrap())); + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 1, 1).unwrap().with_ordinal(366), + /// None); // 2015 had only 365 days + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2016, 1, 1).unwrap().with_ordinal(60), + /// Some(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap())); + /// assert_eq!(NaiveDate::from_ymd_opt(2016, 1, 1).unwrap().with_ordinal(366), + /// Some(NaiveDate::from_ymd_opt(2016, 12, 31).unwrap())); + /// ``` + #[inline] + fn with_ordinal(&self, ordinal: u32) -> Option { + self.with_of(self.of().with_ordinal(ordinal)?) + } + + /// Makes a new `NaiveDate` with the day of year (starting from 0) changed. + /// + /// Returns `None` when the resulting `NaiveDate` would be invalid. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 1, 1).unwrap().with_ordinal0(59), + /// Some(NaiveDate::from_ymd_opt(2015, 3, 1).unwrap())); + /// assert_eq!(NaiveDate::from_ymd_opt(2015, 1, 1).unwrap().with_ordinal0(365), + /// None); // 2015 had only 365 days + /// + /// assert_eq!(NaiveDate::from_ymd_opt(2016, 1, 1).unwrap().with_ordinal0(59), + /// Some(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap())); + /// assert_eq!(NaiveDate::from_ymd_opt(2016, 1, 1).unwrap().with_ordinal0(365), + /// Some(NaiveDate::from_ymd_opt(2016, 12, 31).unwrap())); + /// ``` + #[inline] + fn with_ordinal0(&self, ordinal0: u32) -> Option { + self.with_of(self.of().with_ordinal(ordinal0 + 1)?) + } +} + +/// An addition of `Duration` to `NaiveDate` discards the fractional days, +/// rounding to the closest integral number of days towards `Duration::zero()`. +/// +/// Panics on underflow or overflow. +/// Use [`NaiveDate::checked_add_signed`](#method.checked_add_signed) to detect that. +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveDate}; +/// +/// let from_ymd = NaiveDate::from_ymd; +/// +/// assert_eq!(from_ymd(2014, 1, 1) + Duration::zero(), from_ymd(2014, 1, 1)); +/// assert_eq!(from_ymd(2014, 1, 1) + Duration::seconds(86399), from_ymd(2014, 1, 1)); +/// assert_eq!(from_ymd(2014, 1, 1) + Duration::seconds(-86399), from_ymd(2014, 1, 1)); +/// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(1), from_ymd(2014, 1, 2)); +/// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(-1), from_ymd(2013, 12, 31)); +/// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(364), from_ymd(2014, 12, 31)); +/// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(365*4 + 1), from_ymd(2018, 1, 1)); +/// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(365*400 + 97), from_ymd(2414, 1, 1)); +/// ``` +impl Add for NaiveDate { + type Output = NaiveDate; + + #[inline] + fn add(self, rhs: OldDuration) -> NaiveDate { + self.checked_add_signed(rhs).expect("`NaiveDate + Duration` overflowed") + } +} + +impl AddAssign for NaiveDate { + #[inline] + fn add_assign(&mut self, rhs: OldDuration) { + *self = self.add(rhs); + } +} + +impl Add for NaiveDate { + type Output = NaiveDate; + + /// An addition of months to `NaiveDate` clamped to valid days in resulting month. + /// + /// # Panics + /// + /// Panics if the resulting date would be out of range. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveDate, Months}; + /// + /// let from_ymd = NaiveDate::from_ymd; + /// + /// assert_eq!(from_ymd(2014, 1, 1) + Months::new(1), from_ymd(2014, 2, 1)); + /// assert_eq!(from_ymd(2014, 1, 1) + Months::new(11), from_ymd(2014, 12, 1)); + /// assert_eq!(from_ymd(2014, 1, 1) + Months::new(12), from_ymd(2015, 1, 1)); + /// assert_eq!(from_ymd(2014, 1, 1) + Months::new(13), from_ymd(2015, 2, 1)); + /// assert_eq!(from_ymd(2014, 1, 31) + Months::new(1), from_ymd(2014, 2, 28)); + /// assert_eq!(from_ymd(2020, 1, 31) + Months::new(1), from_ymd(2020, 2, 29)); + /// ``` + fn add(self, months: Months) -> Self::Output { + self.checked_add_months(months).unwrap() + } +} + +impl Sub for NaiveDate { + type Output = NaiveDate; + + /// A subtraction of Months from `NaiveDate` clamped to valid days in resulting month. + /// + /// # Panics + /// + /// Panics if the resulting date would be out of range. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveDate, Months}; + /// + /// let from_ymd = NaiveDate::from_ymd; + /// + /// assert_eq!(from_ymd(2014, 1, 1) - Months::new(11), from_ymd(2013, 2, 1)); + /// assert_eq!(from_ymd(2014, 1, 1) - Months::new(12), from_ymd(2013, 1, 1)); + /// assert_eq!(from_ymd(2014, 1, 1) - Months::new(13), from_ymd(2012, 12, 1)); + /// ``` + fn sub(self, months: Months) -> Self::Output { + self.checked_sub_months(months).unwrap() + } +} + +impl Add for NaiveDate { + type Output = NaiveDate; + + fn add(self, days: Days) -> Self::Output { + self.checked_add_days(days).unwrap() + } +} + +impl Sub for NaiveDate { + type Output = NaiveDate; + + fn sub(self, days: Days) -> Self::Output { + self.checked_sub_days(days).unwrap() + } +} + +/// A subtraction of `Duration` from `NaiveDate` discards the fractional days, +/// rounding to the closest integral number of days towards `Duration::zero()`. +/// It is the same as the addition with a negated `Duration`. +/// +/// Panics on underflow or overflow. +/// Use [`NaiveDate::checked_sub_signed`](#method.checked_sub_signed) to detect that. +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveDate}; +/// +/// let from_ymd = NaiveDate::from_ymd; +/// +/// assert_eq!(from_ymd(2014, 1, 1) - Duration::zero(), from_ymd(2014, 1, 1)); +/// assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(86399), from_ymd(2014, 1, 1)); +/// assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(-86399), from_ymd(2014, 1, 1)); +/// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(1), from_ymd(2013, 12, 31)); +/// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(-1), from_ymd(2014, 1, 2)); +/// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(364), from_ymd(2013, 1, 2)); +/// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*4 + 1), from_ymd(2010, 1, 1)); +/// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*400 + 97), from_ymd(1614, 1, 1)); +/// ``` +impl Sub for NaiveDate { + type Output = NaiveDate; + + #[inline] + fn sub(self, rhs: OldDuration) -> NaiveDate { + self.checked_sub_signed(rhs).expect("`NaiveDate - Duration` overflowed") + } +} + +impl SubAssign for NaiveDate { + #[inline] + fn sub_assign(&mut self, rhs: OldDuration) { + *self = self.sub(rhs); + } +} + +/// Subtracts another `NaiveDate` from the current date. +/// Returns a `Duration` of integral numbers. +/// +/// This does not overflow or underflow at all, +/// as all possible output fits in the range of `Duration`. +/// +/// The implementation is a wrapper around +/// [`NaiveDate::signed_duration_since`](#method.signed_duration_since). +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveDate}; +/// +/// let from_ymd = NaiveDate::from_ymd; +/// +/// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 1), Duration::zero()); +/// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 12, 31), Duration::days(1)); +/// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 2), Duration::days(-1)); +/// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 9, 23), Duration::days(100)); +/// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 1, 1), Duration::days(365)); +/// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2010, 1, 1), Duration::days(365*4 + 1)); +/// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(1614, 1, 1), Duration::days(365*400 + 97)); +/// ``` +impl Sub for NaiveDate { + type Output = OldDuration; + + #[inline] + fn sub(self, rhs: NaiveDate) -> OldDuration { + self.signed_duration_since(rhs) + } +} + +/// Iterator over `NaiveDate` with a step size of one day. +#[derive(Debug, Copy, Clone, Hash, PartialEq, PartialOrd, Eq, Ord)] +pub struct NaiveDateDaysIterator { + value: NaiveDate, +} + +impl Iterator for NaiveDateDaysIterator { + type Item = NaiveDate; + + fn next(&mut self) -> Option { + if self.value == NaiveDate::MAX { + return None; + } + // current < NaiveDate::MAX from here on: + let current = self.value; + // This can't panic because current is < NaiveDate::MAX: + self.value = current.succ_opt().unwrap(); + Some(current) + } + + fn size_hint(&self) -> (usize, Option) { + let exact_size = NaiveDate::MAX.signed_duration_since(self.value).num_days(); + (exact_size as usize, Some(exact_size as usize)) + } +} + +impl ExactSizeIterator for NaiveDateDaysIterator {} + +impl DoubleEndedIterator for NaiveDateDaysIterator { + fn next_back(&mut self) -> Option { + if self.value == NaiveDate::MIN { + return None; + } + let current = self.value; + self.value = current.pred_opt().unwrap(); + Some(current) + } +} + +#[derive(Debug, Copy, Clone, Hash, PartialEq, PartialOrd, Eq, Ord)] +pub struct NaiveDateWeeksIterator { + value: NaiveDate, +} + +impl Iterator for NaiveDateWeeksIterator { + type Item = NaiveDate; + + fn next(&mut self) -> Option { + if NaiveDate::MAX - self.value < OldDuration::weeks(1) { + return None; + } + let current = self.value; + self.value = current + OldDuration::weeks(1); + Some(current) + } + + fn size_hint(&self) -> (usize, Option) { + let exact_size = NaiveDate::MAX.signed_duration_since(self.value).num_weeks(); + (exact_size as usize, Some(exact_size as usize)) + } +} + +impl ExactSizeIterator for NaiveDateWeeksIterator {} + +impl DoubleEndedIterator for NaiveDateWeeksIterator { + fn next_back(&mut self) -> Option { + if self.value - NaiveDate::MIN < OldDuration::weeks(1) { + return None; + } + let current = self.value; + self.value = current - OldDuration::weeks(1); + Some(current) + } +} + +// TODO: NaiveDateDaysIterator and NaiveDateWeeksIterator should implement FusedIterator, +// TrustedLen, and Step once they becomes stable. +// See: https://github.com/chronotope/chrono/issues/208 + +/// The `Debug` output of the naive date `d` is the same as +/// [`d.format("%Y-%m-%d")`](../format/strftime/index.html). +/// +/// The string printed can be readily parsed via the `parse` method on `str`. +/// +/// # Example +/// +/// ``` +/// use chrono::NaiveDate; +/// +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(2015, 9, 5).unwrap()), "2015-09-05"); +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt( 0, 1, 1).unwrap()), "0000-01-01"); +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(9999, 12, 31).unwrap()), "9999-12-31"); +/// ``` +/// +/// ISO 8601 requires an explicit sign for years before 1 BCE or after 9999 CE. +/// +/// ``` +/// # use chrono::NaiveDate; +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt( -1, 1, 1).unwrap()), "-0001-01-01"); +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(10000, 12, 31).unwrap()), "+10000-12-31"); +/// ``` +impl fmt::Debug for NaiveDate { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + use core::fmt::Write; + + let year = self.year(); + let mdf = self.mdf(); + if (0..=9999).contains(&year) { + write_hundreds(f, (year / 100) as u8)?; + write_hundreds(f, (year % 100) as u8)?; + } else { + // ISO 8601 requires the explicit sign for out-of-range years + write!(f, "{:+05}", year)?; + } + + f.write_char('-')?; + write_hundreds(f, mdf.month() as u8)?; + f.write_char('-')?; + write_hundreds(f, mdf.day() as u8) + } +} + +/// The `Display` output of the naive date `d` is the same as +/// [`d.format("%Y-%m-%d")`](../format/strftime/index.html). +/// +/// The string printed can be readily parsed via the `parse` method on `str`. +/// +/// # Example +/// +/// ``` +/// use chrono::NaiveDate; +/// +/// assert_eq!(format!("{}", NaiveDate::from_ymd_opt(2015, 9, 5).unwrap()), "2015-09-05"); +/// assert_eq!(format!("{}", NaiveDate::from_ymd_opt( 0, 1, 1).unwrap()), "0000-01-01"); +/// assert_eq!(format!("{}", NaiveDate::from_ymd_opt(9999, 12, 31).unwrap()), "9999-12-31"); +/// ``` +/// +/// ISO 8601 requires an explicit sign for years before 1 BCE or after 9999 CE. +/// +/// ``` +/// # use chrono::NaiveDate; +/// assert_eq!(format!("{}", NaiveDate::from_ymd_opt( -1, 1, 1).unwrap()), "-0001-01-01"); +/// assert_eq!(format!("{}", NaiveDate::from_ymd_opt(10000, 12, 31).unwrap()), "+10000-12-31"); +/// ``` +impl fmt::Display for NaiveDate { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + fmt::Debug::fmt(self, f) + } +} + +/// Parsing a `str` into a `NaiveDate` uses the same format, +/// [`%Y-%m-%d`](../format/strftime/index.html), as in `Debug` and `Display`. +/// +/// # Example +/// +/// ``` +/// use chrono::NaiveDate; +/// +/// let d = NaiveDate::from_ymd_opt(2015, 9, 18).unwrap(); +/// assert_eq!("2015-09-18".parse::(), Ok(d)); +/// +/// let d = NaiveDate::from_ymd_opt(12345, 6, 7).unwrap(); +/// assert_eq!("+12345-6-7".parse::(), Ok(d)); +/// +/// assert!("foo".parse::().is_err()); +/// ``` +impl str::FromStr for NaiveDate { + type Err = ParseError; + + fn from_str(s: &str) -> ParseResult { + const ITEMS: &[Item<'static>] = &[ + Item::Numeric(Numeric::Year, Pad::Zero), + Item::Space(""), + Item::Literal("-"), + Item::Numeric(Numeric::Month, Pad::Zero), + Item::Space(""), + Item::Literal("-"), + Item::Numeric(Numeric::Day, Pad::Zero), + Item::Space(""), + ]; + + let mut parsed = Parsed::new(); + parse(&mut parsed, s, ITEMS.iter())?; + parsed.to_naive_date() + } +} + +/// The default value for a NaiveDate is 1st of January 1970. +/// +/// # Example +/// +/// ```rust +/// use chrono::NaiveDate; +/// +/// let default_date = NaiveDate::default(); +/// assert_eq!(default_date, NaiveDate::from_ymd_opt(1970, 1, 1).unwrap()); +/// ``` +impl Default for NaiveDate { + fn default() -> Self { + NaiveDate::from_ymd_opt(1970, 1, 1).unwrap() + } +} + +#[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))] +fn test_encodable_json(to_string: F) +where + F: Fn(&NaiveDate) -> Result, + E: ::std::fmt::Debug, +{ + assert_eq!( + to_string(&NaiveDate::from_ymd_opt(2014, 7, 24).unwrap()).ok(), + Some(r#""2014-07-24""#.into()) + ); + assert_eq!( + to_string(&NaiveDate::from_ymd_opt(0, 1, 1).unwrap()).ok(), + Some(r#""0000-01-01""#.into()) + ); + assert_eq!( + to_string(&NaiveDate::from_ymd_opt(-1, 12, 31).unwrap()).ok(), + Some(r#""-0001-12-31""#.into()) + ); + assert_eq!(to_string(&NaiveDate::MIN).ok(), Some(r#""-262144-01-01""#.into())); + assert_eq!(to_string(&NaiveDate::MAX).ok(), Some(r#""+262143-12-31""#.into())); +} + +#[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))] +fn test_decodable_json(from_str: F) +where + F: Fn(&str) -> Result, + E: ::std::fmt::Debug, +{ + use std::{i32, i64}; + + assert_eq!( + from_str(r#""2016-07-08""#).ok(), + Some(NaiveDate::from_ymd_opt(2016, 7, 8).unwrap()) + ); + assert_eq!(from_str(r#""2016-7-8""#).ok(), Some(NaiveDate::from_ymd_opt(2016, 7, 8).unwrap())); + assert_eq!(from_str(r#""+002016-07-08""#).ok(), NaiveDate::from_ymd_opt(2016, 7, 8)); + assert_eq!(from_str(r#""0000-01-01""#).ok(), Some(NaiveDate::from_ymd_opt(0, 1, 1).unwrap())); + assert_eq!(from_str(r#""0-1-1""#).ok(), Some(NaiveDate::from_ymd_opt(0, 1, 1).unwrap())); + assert_eq!( + from_str(r#""-0001-12-31""#).ok(), + Some(NaiveDate::from_ymd_opt(-1, 12, 31).unwrap()) + ); + assert_eq!(from_str(r#""-262144-01-01""#).ok(), Some(NaiveDate::MIN)); + assert_eq!(from_str(r#""+262143-12-31""#).ok(), Some(NaiveDate::MAX)); + + // bad formats + assert!(from_str(r#""""#).is_err()); + assert!(from_str(r#""20001231""#).is_err()); + assert!(from_str(r#""2000-00-00""#).is_err()); + assert!(from_str(r#""2000-02-30""#).is_err()); + assert!(from_str(r#""2001-02-29""#).is_err()); + assert!(from_str(r#""2002-002-28""#).is_err()); + assert!(from_str(r#""yyyy-mm-dd""#).is_err()); + assert!(from_str(r#"0"#).is_err()); + assert!(from_str(r#"20.01"#).is_err()); + assert!(from_str(&i32::MIN.to_string()).is_err()); + assert!(from_str(&i32::MAX.to_string()).is_err()); + assert!(from_str(&i64::MIN.to_string()).is_err()); + assert!(from_str(&i64::MAX.to_string()).is_err()); + assert!(from_str(r#"{}"#).is_err()); + // pre-0.3.0 rustc-serialize format is now invalid + assert!(from_str(r#"{"ymdf":20}"#).is_err()); + assert!(from_str(r#"null"#).is_err()); +} + +#[cfg(feature = "rustc-serialize")] +#[cfg_attr(docsrs, doc(cfg(feature = "rustc-serialize")))] +mod rustc_serialize { + use super::NaiveDate; + use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; + + impl Encodable for NaiveDate { + fn encode(&self, s: &mut S) -> Result<(), S::Error> { + format!("{:?}", self).encode(s) + } + } + + impl Decodable for NaiveDate { + fn decode(d: &mut D) -> Result { + d.read_str()?.parse().map_err(|_| d.error("invalid date")) + } + } + + #[cfg(test)] + use rustc_serialize::json; + + #[test] + fn test_encodable() { + super::test_encodable_json(json::encode); + } + + #[test] + fn test_decodable() { + super::test_decodable_json(json::decode); + } +} + +#[cfg(feature = "serde")] +#[cfg_attr(docsrs, doc(cfg(feature = "serde")))] +mod serde { + use super::NaiveDate; + use core::fmt; + use serde::{de, ser}; + + // TODO not very optimized for space (binary formats would want something better) + + impl ser::Serialize for NaiveDate { + fn serialize(&self, serializer: S) -> Result + where + S: ser::Serializer, + { + struct FormatWrapped<'a, D: 'a> { + inner: &'a D, + } + + impl<'a, D: fmt::Debug> fmt::Display for FormatWrapped<'a, D> { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.inner.fmt(f) + } + } + + serializer.collect_str(&FormatWrapped { inner: &self }) + } + } + + struct NaiveDateVisitor; + + impl<'de> de::Visitor<'de> for NaiveDateVisitor { + type Value = NaiveDate; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a formatted date string") + } + + #[cfg(any(feature = "std", test))] + fn visit_str(self, value: &str) -> Result + where + E: de::Error, + { + value.parse().map_err(E::custom) + } + + #[cfg(not(any(feature = "std", test)))] + fn visit_str(self, value: &str) -> Result + where + E: de::Error, + { + value.parse().map_err(E::custom) + } + } + + impl<'de> de::Deserialize<'de> for NaiveDate { + fn deserialize(deserializer: D) -> Result + where + D: de::Deserializer<'de>, + { + deserializer.deserialize_str(NaiveDateVisitor) + } + } + + #[test] + fn test_serde_serialize() { + super::test_encodable_json(serde_json::to_string); + } + + #[test] + fn test_serde_deserialize() { + super::test_decodable_json(|input| serde_json::from_str(input)); + } + + #[test] + fn test_serde_bincode() { + // Bincode is relevant to test separately from JSON because + // it is not self-describing. + use bincode::{deserialize, serialize}; + + let d = NaiveDate::from_ymd_opt(2014, 7, 24).unwrap(); + let encoded = serialize(&d).unwrap(); + let decoded: NaiveDate = deserialize(&encoded).unwrap(); + assert_eq!(d, decoded); + } +} + +#[cfg(test)] +mod tests { + use super::{ + Days, Months, NaiveDate, MAX_DAYS_FROM_YEAR_0, MAX_YEAR, MIN_DAYS_FROM_YEAR_0, MIN_YEAR, + }; + use crate::oldtime::Duration; + use crate::{Datelike, Weekday}; + use std::{ + convert::{TryFrom, TryInto}, + i32, u32, + }; + + #[test] + fn diff_months() { + // identity + assert_eq!( + NaiveDate::from_ymd_opt(2022, 8, 3).unwrap().checked_add_months(Months::new(0)), + Some(NaiveDate::from_ymd_opt(2022, 8, 3).unwrap()) + ); + + // add with months exceeding `i32::MAX` + assert_eq!( + NaiveDate::from_ymd_opt(2022, 8, 3) + .unwrap() + .checked_add_months(Months::new(i32::MAX as u32 + 1)), + None + ); + + // sub with months exceeding `i32::MIN` + assert_eq!( + NaiveDate::from_ymd_opt(2022, 8, 3) + .unwrap() + .checked_sub_months(Months::new((i32::MIN as i64).abs() as u32 + 1)), + None + ); + + // add overflowing year + assert_eq!(NaiveDate::MAX.checked_add_months(Months::new(1)), None); + + // add underflowing year + assert_eq!(NaiveDate::MIN.checked_sub_months(Months::new(1)), None); + + // sub crossing year 0 boundary + assert_eq!( + NaiveDate::from_ymd_opt(2022, 8, 3).unwrap().checked_sub_months(Months::new(2050 * 12)), + Some(NaiveDate::from_ymd_opt(-28, 8, 3).unwrap()) + ); + + // add crossing year boundary + assert_eq!( + NaiveDate::from_ymd_opt(2022, 8, 3).unwrap().checked_add_months(Months::new(6)), + Some(NaiveDate::from_ymd_opt(2023, 2, 3).unwrap()) + ); + + // sub crossing year boundary + assert_eq!( + NaiveDate::from_ymd_opt(2022, 8, 3).unwrap().checked_sub_months(Months::new(10)), + Some(NaiveDate::from_ymd_opt(2021, 10, 3).unwrap()) + ); + + // add clamping day, non-leap year + assert_eq!( + NaiveDate::from_ymd_opt(2022, 1, 29).unwrap().checked_add_months(Months::new(1)), + Some(NaiveDate::from_ymd_opt(2022, 2, 28).unwrap()) + ); + + // add to leap day + assert_eq!( + NaiveDate::from_ymd_opt(2022, 10, 29).unwrap().checked_add_months(Months::new(16)), + Some(NaiveDate::from_ymd_opt(2024, 2, 29).unwrap()) + ); + + // add into december + assert_eq!( + NaiveDate::from_ymd_opt(2022, 10, 31).unwrap().checked_add_months(Months::new(2)), + Some(NaiveDate::from_ymd_opt(2022, 12, 31).unwrap()) + ); + + // sub into december + assert_eq!( + NaiveDate::from_ymd_opt(2022, 10, 31).unwrap().checked_sub_months(Months::new(10)), + Some(NaiveDate::from_ymd_opt(2021, 12, 31).unwrap()) + ); + + // add into january + assert_eq!( + NaiveDate::from_ymd_opt(2022, 8, 3).unwrap().checked_add_months(Months::new(5)), + Some(NaiveDate::from_ymd_opt(2023, 1, 3).unwrap()) + ); + + // sub into january + assert_eq!( + NaiveDate::from_ymd_opt(2022, 8, 3).unwrap().checked_sub_months(Months::new(7)), + Some(NaiveDate::from_ymd_opt(2022, 1, 3).unwrap()) + ); + } + + #[test] + fn test_readme_doomsday() { + use num_iter::range_inclusive; + + for y in range_inclusive(NaiveDate::MIN.year(), NaiveDate::MAX.year()) { + // even months + let d4 = NaiveDate::from_ymd_opt(y, 4, 4).unwrap(); + let d6 = NaiveDate::from_ymd_opt(y, 6, 6).unwrap(); + let d8 = NaiveDate::from_ymd_opt(y, 8, 8).unwrap(); + let d10 = NaiveDate::from_ymd_opt(y, 10, 10).unwrap(); + let d12 = NaiveDate::from_ymd_opt(y, 12, 12).unwrap(); + + // nine to five, seven-eleven + let d59 = NaiveDate::from_ymd_opt(y, 5, 9).unwrap(); + let d95 = NaiveDate::from_ymd_opt(y, 9, 5).unwrap(); + let d711 = NaiveDate::from_ymd_opt(y, 7, 11).unwrap(); + let d117 = NaiveDate::from_ymd_opt(y, 11, 7).unwrap(); + + // "March 0" + let d30 = NaiveDate::from_ymd_opt(y, 3, 1).unwrap().pred_opt().unwrap(); + + let weekday = d30.weekday(); + let other_dates = [d4, d6, d8, d10, d12, d59, d95, d711, d117]; + assert!(other_dates.iter().all(|d| d.weekday() == weekday)); + } + } + + #[test] + fn test_date_from_ymd() { + let ymd_opt = NaiveDate::from_ymd_opt; + + assert!(ymd_opt(2012, 0, 1).is_none()); + assert!(ymd_opt(2012, 1, 1).is_some()); + assert!(ymd_opt(2012, 2, 29).is_some()); + assert!(ymd_opt(2014, 2, 29).is_none()); + assert!(ymd_opt(2014, 3, 0).is_none()); + assert!(ymd_opt(2014, 3, 1).is_some()); + assert!(ymd_opt(2014, 3, 31).is_some()); + assert!(ymd_opt(2014, 3, 32).is_none()); + assert!(ymd_opt(2014, 12, 31).is_some()); + assert!(ymd_opt(2014, 13, 1).is_none()); + } + + #[test] + fn test_date_from_yo() { + let yo_opt = NaiveDate::from_yo_opt; + let ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); + + assert_eq!(yo_opt(2012, 0), None); + assert_eq!(yo_opt(2012, 1), Some(ymd(2012, 1, 1))); + assert_eq!(yo_opt(2012, 2), Some(ymd(2012, 1, 2))); + assert_eq!(yo_opt(2012, 32), Some(ymd(2012, 2, 1))); + assert_eq!(yo_opt(2012, 60), Some(ymd(2012, 2, 29))); + assert_eq!(yo_opt(2012, 61), Some(ymd(2012, 3, 1))); + assert_eq!(yo_opt(2012, 100), Some(ymd(2012, 4, 9))); + assert_eq!(yo_opt(2012, 200), Some(ymd(2012, 7, 18))); + assert_eq!(yo_opt(2012, 300), Some(ymd(2012, 10, 26))); + assert_eq!(yo_opt(2012, 366), Some(ymd(2012, 12, 31))); + assert_eq!(yo_opt(2012, 367), None); + + assert_eq!(yo_opt(2014, 0), None); + assert_eq!(yo_opt(2014, 1), Some(ymd(2014, 1, 1))); + assert_eq!(yo_opt(2014, 2), Some(ymd(2014, 1, 2))); + assert_eq!(yo_opt(2014, 32), Some(ymd(2014, 2, 1))); + assert_eq!(yo_opt(2014, 59), Some(ymd(2014, 2, 28))); + assert_eq!(yo_opt(2014, 60), Some(ymd(2014, 3, 1))); + assert_eq!(yo_opt(2014, 100), Some(ymd(2014, 4, 10))); + assert_eq!(yo_opt(2014, 200), Some(ymd(2014, 7, 19))); + assert_eq!(yo_opt(2014, 300), Some(ymd(2014, 10, 27))); + assert_eq!(yo_opt(2014, 365), Some(ymd(2014, 12, 31))); + assert_eq!(yo_opt(2014, 366), None); + } + + #[test] + fn test_date_from_isoywd() { + let isoywd_opt = NaiveDate::from_isoywd_opt; + let ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); + + assert_eq!(isoywd_opt(2004, 0, Weekday::Sun), None); + assert_eq!(isoywd_opt(2004, 1, Weekday::Mon), Some(ymd(2003, 12, 29))); + assert_eq!(isoywd_opt(2004, 1, Weekday::Sun), Some(ymd(2004, 1, 4))); + assert_eq!(isoywd_opt(2004, 2, Weekday::Mon), Some(ymd(2004, 1, 5))); + assert_eq!(isoywd_opt(2004, 2, Weekday::Sun), Some(ymd(2004, 1, 11))); + assert_eq!(isoywd_opt(2004, 52, Weekday::Mon), Some(ymd(2004, 12, 20))); + assert_eq!(isoywd_opt(2004, 52, Weekday::Sun), Some(ymd(2004, 12, 26))); + assert_eq!(isoywd_opt(2004, 53, Weekday::Mon), Some(ymd(2004, 12, 27))); + assert_eq!(isoywd_opt(2004, 53, Weekday::Sun), Some(ymd(2005, 1, 2))); + assert_eq!(isoywd_opt(2004, 54, Weekday::Mon), None); + + assert_eq!(isoywd_opt(2011, 0, Weekday::Sun), None); + assert_eq!(isoywd_opt(2011, 1, Weekday::Mon), Some(ymd(2011, 1, 3))); + assert_eq!(isoywd_opt(2011, 1, Weekday::Sun), Some(ymd(2011, 1, 9))); + assert_eq!(isoywd_opt(2011, 2, Weekday::Mon), Some(ymd(2011, 1, 10))); + assert_eq!(isoywd_opt(2011, 2, Weekday::Sun), Some(ymd(2011, 1, 16))); + + assert_eq!(isoywd_opt(2018, 51, Weekday::Mon), Some(ymd(2018, 12, 17))); + assert_eq!(isoywd_opt(2018, 51, Weekday::Sun), Some(ymd(2018, 12, 23))); + assert_eq!(isoywd_opt(2018, 52, Weekday::Mon), Some(ymd(2018, 12, 24))); + assert_eq!(isoywd_opt(2018, 52, Weekday::Sun), Some(ymd(2018, 12, 30))); + assert_eq!(isoywd_opt(2018, 53, Weekday::Mon), None); + } + + #[test] + fn test_date_from_isoywd_and_iso_week() { + for year in 2000..2401 { + for week in 1..54 { + for &weekday in [ + Weekday::Mon, + Weekday::Tue, + Weekday::Wed, + Weekday::Thu, + Weekday::Fri, + Weekday::Sat, + Weekday::Sun, + ] + .iter() + { + let d = NaiveDate::from_isoywd_opt(year, week, weekday); + if let Some(d) = d { + assert_eq!(d.weekday(), weekday); + let w = d.iso_week(); + assert_eq!(w.year(), year); + assert_eq!(w.week(), week); + } + } + } + } + + for year in 2000..2401 { + for month in 1..13 { + for day in 1..32 { + let d = NaiveDate::from_ymd_opt(year, month, day); + if let Some(d) = d { + let w = d.iso_week(); + let d_ = NaiveDate::from_isoywd_opt(w.year(), w.week(), d.weekday()); + assert_eq!(d, d_.unwrap()); + } + } + } + } + } + + #[test] + fn test_date_from_num_days_from_ce() { + let from_ndays_from_ce = NaiveDate::from_num_days_from_ce_opt; + assert_eq!(from_ndays_from_ce(1), Some(NaiveDate::from_ymd_opt(1, 1, 1).unwrap())); + assert_eq!(from_ndays_from_ce(2), Some(NaiveDate::from_ymd_opt(1, 1, 2).unwrap())); + assert_eq!(from_ndays_from_ce(31), Some(NaiveDate::from_ymd_opt(1, 1, 31).unwrap())); + assert_eq!(from_ndays_from_ce(32), Some(NaiveDate::from_ymd_opt(1, 2, 1).unwrap())); + assert_eq!(from_ndays_from_ce(59), Some(NaiveDate::from_ymd_opt(1, 2, 28).unwrap())); + assert_eq!(from_ndays_from_ce(60), Some(NaiveDate::from_ymd_opt(1, 3, 1).unwrap())); + assert_eq!(from_ndays_from_ce(365), Some(NaiveDate::from_ymd_opt(1, 12, 31).unwrap())); + assert_eq!(from_ndays_from_ce(365 + 1), Some(NaiveDate::from_ymd_opt(2, 1, 1).unwrap())); + assert_eq!( + from_ndays_from_ce(365 * 2 + 1), + Some(NaiveDate::from_ymd_opt(3, 1, 1).unwrap()) + ); + assert_eq!( + from_ndays_from_ce(365 * 3 + 1), + Some(NaiveDate::from_ymd_opt(4, 1, 1).unwrap()) + ); + assert_eq!( + from_ndays_from_ce(365 * 4 + 2), + Some(NaiveDate::from_ymd_opt(5, 1, 1).unwrap()) + ); + assert_eq!( + from_ndays_from_ce(146097 + 1), + Some(NaiveDate::from_ymd_opt(401, 1, 1).unwrap()) + ); + assert_eq!( + from_ndays_from_ce(146097 * 5 + 1), + Some(NaiveDate::from_ymd_opt(2001, 1, 1).unwrap()) + ); + assert_eq!(from_ndays_from_ce(719163), Some(NaiveDate::from_ymd_opt(1970, 1, 1).unwrap())); + assert_eq!(from_ndays_from_ce(0), Some(NaiveDate::from_ymd_opt(0, 12, 31).unwrap())); // 1 BCE + assert_eq!(from_ndays_from_ce(-365), Some(NaiveDate::from_ymd_opt(0, 1, 1).unwrap())); + assert_eq!(from_ndays_from_ce(-366), Some(NaiveDate::from_ymd_opt(-1, 12, 31).unwrap())); // 2 BCE + + for days in (-9999..10001).map(|x| x * 100) { + assert_eq!(from_ndays_from_ce(days).map(|d| d.num_days_from_ce()), Some(days)); + } + + assert_eq!(from_ndays_from_ce(NaiveDate::MIN.num_days_from_ce()), Some(NaiveDate::MIN)); + assert_eq!(from_ndays_from_ce(NaiveDate::MIN.num_days_from_ce() - 1), None); + assert_eq!(from_ndays_from_ce(NaiveDate::MAX.num_days_from_ce()), Some(NaiveDate::MAX)); + assert_eq!(from_ndays_from_ce(NaiveDate::MAX.num_days_from_ce() + 1), None); + } + + #[test] + fn test_date_from_weekday_of_month_opt() { + let ymwd = NaiveDate::from_weekday_of_month_opt; + assert_eq!(ymwd(2018, 8, Weekday::Tue, 0), None); + assert_eq!( + ymwd(2018, 8, Weekday::Wed, 1), + Some(NaiveDate::from_ymd_opt(2018, 8, 1).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Thu, 1), + Some(NaiveDate::from_ymd_opt(2018, 8, 2).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Sun, 1), + Some(NaiveDate::from_ymd_opt(2018, 8, 5).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Mon, 1), + Some(NaiveDate::from_ymd_opt(2018, 8, 6).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Tue, 1), + Some(NaiveDate::from_ymd_opt(2018, 8, 7).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Wed, 2), + Some(NaiveDate::from_ymd_opt(2018, 8, 8).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Sun, 2), + Some(NaiveDate::from_ymd_opt(2018, 8, 12).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Thu, 3), + Some(NaiveDate::from_ymd_opt(2018, 8, 16).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Thu, 4), + Some(NaiveDate::from_ymd_opt(2018, 8, 23).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Thu, 5), + Some(NaiveDate::from_ymd_opt(2018, 8, 30).unwrap()) + ); + assert_eq!( + ymwd(2018, 8, Weekday::Fri, 5), + Some(NaiveDate::from_ymd_opt(2018, 8, 31).unwrap()) + ); + assert_eq!(ymwd(2018, 8, Weekday::Sat, 5), None); + } + + #[test] + fn test_date_fields() { + fn check(year: i32, month: u32, day: u32, ordinal: u32) { + let d1 = NaiveDate::from_ymd_opt(year, month, day).unwrap(); + assert_eq!(d1.year(), year); + assert_eq!(d1.month(), month); + assert_eq!(d1.day(), day); + assert_eq!(d1.ordinal(), ordinal); + + let d2 = NaiveDate::from_yo_opt(year, ordinal).unwrap(); + assert_eq!(d2.year(), year); + assert_eq!(d2.month(), month); + assert_eq!(d2.day(), day); + assert_eq!(d2.ordinal(), ordinal); + + assert_eq!(d1, d2); + } + + check(2012, 1, 1, 1); + check(2012, 1, 2, 2); + check(2012, 2, 1, 32); + check(2012, 2, 29, 60); + check(2012, 3, 1, 61); + check(2012, 4, 9, 100); + check(2012, 7, 18, 200); + check(2012, 10, 26, 300); + check(2012, 12, 31, 366); + + check(2014, 1, 1, 1); + check(2014, 1, 2, 2); + check(2014, 2, 1, 32); + check(2014, 2, 28, 59); + check(2014, 3, 1, 60); + check(2014, 4, 10, 100); + check(2014, 7, 19, 200); + check(2014, 10, 27, 300); + check(2014, 12, 31, 365); + } + + #[test] + fn test_date_weekday() { + assert_eq!(NaiveDate::from_ymd_opt(1582, 10, 15).unwrap().weekday(), Weekday::Fri); + // May 20, 1875 = ISO 8601 reference date + assert_eq!(NaiveDate::from_ymd_opt(1875, 5, 20).unwrap().weekday(), Weekday::Thu); + assert_eq!(NaiveDate::from_ymd_opt(2000, 1, 1).unwrap().weekday(), Weekday::Sat); + } + + #[test] + fn test_date_with_fields() { + let d = NaiveDate::from_ymd_opt(2000, 2, 29).unwrap(); + assert_eq!(d.with_year(-400), Some(NaiveDate::from_ymd_opt(-400, 2, 29).unwrap())); + assert_eq!(d.with_year(-100), None); + assert_eq!(d.with_year(1600), Some(NaiveDate::from_ymd_opt(1600, 2, 29).unwrap())); + assert_eq!(d.with_year(1900), None); + assert_eq!(d.with_year(2000), Some(NaiveDate::from_ymd_opt(2000, 2, 29).unwrap())); + assert_eq!(d.with_year(2001), None); + assert_eq!(d.with_year(2004), Some(NaiveDate::from_ymd_opt(2004, 2, 29).unwrap())); + assert_eq!(d.with_year(i32::MAX), None); + + let d = NaiveDate::from_ymd_opt(2000, 4, 30).unwrap(); + assert_eq!(d.with_month(0), None); + assert_eq!(d.with_month(1), Some(NaiveDate::from_ymd_opt(2000, 1, 30).unwrap())); + assert_eq!(d.with_month(2), None); + assert_eq!(d.with_month(3), Some(NaiveDate::from_ymd_opt(2000, 3, 30).unwrap())); + assert_eq!(d.with_month(4), Some(NaiveDate::from_ymd_opt(2000, 4, 30).unwrap())); + assert_eq!(d.with_month(12), Some(NaiveDate::from_ymd_opt(2000, 12, 30).unwrap())); + assert_eq!(d.with_month(13), None); + assert_eq!(d.with_month(u32::MAX), None); + + let d = NaiveDate::from_ymd_opt(2000, 2, 8).unwrap(); + assert_eq!(d.with_day(0), None); + assert_eq!(d.with_day(1), Some(NaiveDate::from_ymd_opt(2000, 2, 1).unwrap())); + assert_eq!(d.with_day(29), Some(NaiveDate::from_ymd_opt(2000, 2, 29).unwrap())); + assert_eq!(d.with_day(30), None); + assert_eq!(d.with_day(u32::MAX), None); + + let d = NaiveDate::from_ymd_opt(2000, 5, 5).unwrap(); + assert_eq!(d.with_ordinal(0), None); + assert_eq!(d.with_ordinal(1), Some(NaiveDate::from_ymd_opt(2000, 1, 1).unwrap())); + assert_eq!(d.with_ordinal(60), Some(NaiveDate::from_ymd_opt(2000, 2, 29).unwrap())); + assert_eq!(d.with_ordinal(61), Some(NaiveDate::from_ymd_opt(2000, 3, 1).unwrap())); + assert_eq!(d.with_ordinal(366), Some(NaiveDate::from_ymd_opt(2000, 12, 31).unwrap())); + assert_eq!(d.with_ordinal(367), None); + assert_eq!(d.with_ordinal(u32::MAX), None); + } + + #[test] + fn test_date_num_days_from_ce() { + assert_eq!(NaiveDate::from_ymd_opt(1, 1, 1).unwrap().num_days_from_ce(), 1); + + for year in -9999..10001 { + assert_eq!( + NaiveDate::from_ymd_opt(year, 1, 1).unwrap().num_days_from_ce(), + NaiveDate::from_ymd_opt(year - 1, 12, 31).unwrap().num_days_from_ce() + 1 + ); + } + } + + #[test] + fn test_date_succ() { + let ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); + assert_eq!(ymd(2014, 5, 6).succ_opt(), Some(ymd(2014, 5, 7))); + assert_eq!(ymd(2014, 5, 31).succ_opt(), Some(ymd(2014, 6, 1))); + assert_eq!(ymd(2014, 12, 31).succ_opt(), Some(ymd(2015, 1, 1))); + assert_eq!(ymd(2016, 2, 28).succ_opt(), Some(ymd(2016, 2, 29))); + assert_eq!(ymd(NaiveDate::MAX.year(), 12, 31).succ_opt(), None); + } + + #[test] + fn test_date_pred() { + let ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); + assert_eq!(ymd(2016, 3, 1).pred_opt(), Some(ymd(2016, 2, 29))); + assert_eq!(ymd(2015, 1, 1).pred_opt(), Some(ymd(2014, 12, 31))); + assert_eq!(ymd(2014, 6, 1).pred_opt(), Some(ymd(2014, 5, 31))); + assert_eq!(ymd(2014, 5, 7).pred_opt(), Some(ymd(2014, 5, 6))); + assert_eq!(ymd(NaiveDate::MIN.year(), 1, 1).pred_opt(), None); + } + + #[test] + fn test_date_add() { + fn check((y1, m1, d1): (i32, u32, u32), rhs: Duration, ymd: Option<(i32, u32, u32)>) { + let lhs = NaiveDate::from_ymd_opt(y1, m1, d1).unwrap(); + let sum = ymd.map(|(y, m, d)| NaiveDate::from_ymd_opt(y, m, d).unwrap()); + assert_eq!(lhs.checked_add_signed(rhs), sum); + assert_eq!(lhs.checked_sub_signed(-rhs), sum); + } + + check((2014, 1, 1), Duration::zero(), Some((2014, 1, 1))); + check((2014, 1, 1), Duration::seconds(86399), Some((2014, 1, 1))); + // always round towards zero + check((2014, 1, 1), Duration::seconds(-86399), Some((2014, 1, 1))); + check((2014, 1, 1), Duration::days(1), Some((2014, 1, 2))); + check((2014, 1, 1), Duration::days(-1), Some((2013, 12, 31))); + check((2014, 1, 1), Duration::days(364), Some((2014, 12, 31))); + check((2014, 1, 1), Duration::days(365 * 4 + 1), Some((2018, 1, 1))); + check((2014, 1, 1), Duration::days(365 * 400 + 97), Some((2414, 1, 1))); + + check((-7, 1, 1), Duration::days(365 * 12 + 3), Some((5, 1, 1))); + + // overflow check + check((0, 1, 1), Duration::days(MAX_DAYS_FROM_YEAR_0 as i64), Some((MAX_YEAR, 12, 31))); + check((0, 1, 1), Duration::days(MAX_DAYS_FROM_YEAR_0 as i64 + 1), None); + check((0, 1, 1), Duration::max_value(), None); + check((0, 1, 1), Duration::days(MIN_DAYS_FROM_YEAR_0 as i64), Some((MIN_YEAR, 1, 1))); + check((0, 1, 1), Duration::days(MIN_DAYS_FROM_YEAR_0 as i64 - 1), None); + check((0, 1, 1), Duration::min_value(), None); + } + + #[test] + fn test_date_sub() { + fn check((y1, m1, d1): (i32, u32, u32), (y2, m2, d2): (i32, u32, u32), diff: Duration) { + let lhs = NaiveDate::from_ymd_opt(y1, m1, d1).unwrap(); + let rhs = NaiveDate::from_ymd_opt(y2, m2, d2).unwrap(); + assert_eq!(lhs.signed_duration_since(rhs), diff); + assert_eq!(rhs.signed_duration_since(lhs), -diff); + } + + check((2014, 1, 1), (2014, 1, 1), Duration::zero()); + check((2014, 1, 2), (2014, 1, 1), Duration::days(1)); + check((2014, 12, 31), (2014, 1, 1), Duration::days(364)); + check((2015, 1, 3), (2014, 1, 1), Duration::days(365 + 2)); + check((2018, 1, 1), (2014, 1, 1), Duration::days(365 * 4 + 1)); + check((2414, 1, 1), (2014, 1, 1), Duration::days(365 * 400 + 97)); + + check((MAX_YEAR, 12, 31), (0, 1, 1), Duration::days(MAX_DAYS_FROM_YEAR_0 as i64)); + check((MIN_YEAR, 1, 1), (0, 1, 1), Duration::days(MIN_DAYS_FROM_YEAR_0 as i64)); + } + + #[test] + fn test_date_add_days() { + fn check((y1, m1, d1): (i32, u32, u32), rhs: Days, ymd: Option<(i32, u32, u32)>) { + let lhs = NaiveDate::from_ymd_opt(y1, m1, d1).unwrap(); + let sum = ymd.map(|(y, m, d)| NaiveDate::from_ymd_opt(y, m, d).unwrap()); + assert_eq!(lhs.checked_add_days(rhs), sum); + } + + check((2014, 1, 1), Days::new(0), Some((2014, 1, 1))); + // always round towards zero + check((2014, 1, 1), Days::new(1), Some((2014, 1, 2))); + check((2014, 1, 1), Days::new(364), Some((2014, 12, 31))); + check((2014, 1, 1), Days::new(365 * 4 + 1), Some((2018, 1, 1))); + check((2014, 1, 1), Days::new(365 * 400 + 97), Some((2414, 1, 1))); + + check((-7, 1, 1), Days::new(365 * 12 + 3), Some((5, 1, 1))); + + // overflow check + check( + (0, 1, 1), + Days::new(MAX_DAYS_FROM_YEAR_0.try_into().unwrap()), + Some((MAX_YEAR, 12, 31)), + ); + check((0, 1, 1), Days::new(u64::try_from(MAX_DAYS_FROM_YEAR_0).unwrap() + 1), None); + } + + #[test] + fn test_date_sub_days() { + fn check((y1, m1, d1): (i32, u32, u32), (y2, m2, d2): (i32, u32, u32), diff: Days) { + let lhs = NaiveDate::from_ymd_opt(y1, m1, d1).unwrap(); + let rhs = NaiveDate::from_ymd_opt(y2, m2, d2).unwrap(); + assert_eq!(lhs - diff, rhs); + } + + check((2014, 1, 1), (2014, 1, 1), Days::new(0)); + check((2014, 1, 2), (2014, 1, 1), Days::new(1)); + check((2014, 12, 31), (2014, 1, 1), Days::new(364)); + check((2015, 1, 3), (2014, 1, 1), Days::new(365 + 2)); + check((2018, 1, 1), (2014, 1, 1), Days::new(365 * 4 + 1)); + check((2414, 1, 1), (2014, 1, 1), Days::new(365 * 400 + 97)); + + check((MAX_YEAR, 12, 31), (0, 1, 1), Days::new(MAX_DAYS_FROM_YEAR_0.try_into().unwrap())); + check((0, 1, 1), (MIN_YEAR, 1, 1), Days::new((-MIN_DAYS_FROM_YEAR_0).try_into().unwrap())); + } + + #[test] + fn test_date_addassignment() { + let ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); + let mut date = ymd(2016, 10, 1); + date += Duration::days(10); + assert_eq!(date, ymd(2016, 10, 11)); + date += Duration::days(30); + assert_eq!(date, ymd(2016, 11, 10)); + } + + #[test] + fn test_date_subassignment() { + let ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); + let mut date = ymd(2016, 10, 11); + date -= Duration::days(10); + assert_eq!(date, ymd(2016, 10, 1)); + date -= Duration::days(2); + assert_eq!(date, ymd(2016, 9, 29)); + } + + #[test] + fn test_date_fmt() { + assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(2012, 3, 4).unwrap()), "2012-03-04"); + assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(0, 3, 4).unwrap()), "0000-03-04"); + assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(-307, 3, 4).unwrap()), "-0307-03-04"); + assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(12345, 3, 4).unwrap()), "+12345-03-04"); + + assert_eq!(NaiveDate::from_ymd_opt(2012, 3, 4).unwrap().to_string(), "2012-03-04"); + assert_eq!(NaiveDate::from_ymd_opt(0, 3, 4).unwrap().to_string(), "0000-03-04"); + assert_eq!(NaiveDate::from_ymd_opt(-307, 3, 4).unwrap().to_string(), "-0307-03-04"); + assert_eq!(NaiveDate::from_ymd_opt(12345, 3, 4).unwrap().to_string(), "+12345-03-04"); + + // the format specifier should have no effect on `NaiveTime` + assert_eq!(format!("{:+30?}", NaiveDate::from_ymd_opt(1234, 5, 6).unwrap()), "1234-05-06"); + assert_eq!( + format!("{:30?}", NaiveDate::from_ymd_opt(12345, 6, 7).unwrap()), + "+12345-06-07" + ); + } + + #[test] + fn test_date_from_str() { + // valid cases + let valid = [ + "-0000000123456-1-2", + " -123456 - 1 - 2 ", + "-12345-1-2", + "-1234-12-31", + "-7-6-5", + "350-2-28", + "360-02-29", + "0360-02-29", + "2015-2 -18", + "+70-2-18", + "+70000-2-18", + "+00007-2-18", + ]; + for &s in &valid { + let d = match s.parse::() { + Ok(d) => d, + Err(e) => panic!("parsing `{}` has failed: {}", s, e), + }; + let s_ = format!("{:?}", d); + // `s` and `s_` may differ, but `s.parse()` and `s_.parse()` must be same + let d_ = match s_.parse::() { + Ok(d) => d, + Err(e) => { + panic!("`{}` is parsed into `{:?}`, but reparsing that has failed: {}", s, d, e) + } + }; + assert!( + d == d_, + "`{}` is parsed into `{:?}`, but reparsed result \ + `{:?}` does not match", + s, + d, + d_ + ); + } + + // some invalid cases + // since `ParseErrorKind` is private, all we can do is to check if there was an error + assert!("".parse::().is_err()); + assert!("x".parse::().is_err()); + assert!("2014".parse::().is_err()); + assert!("2014-01".parse::().is_err()); + assert!("2014-01-00".parse::().is_err()); + assert!("2014-13-57".parse::().is_err()); + assert!("9999999-9-9".parse::().is_err()); // out-of-bounds + } + + #[test] + fn test_date_parse_from_str() { + let ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); + assert_eq!( + NaiveDate::parse_from_str("2014-5-7T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), + Ok(ymd(2014, 5, 7)) + ); // ignore time and offset + assert_eq!( + NaiveDate::parse_from_str("2015-W06-1=2015-033", "%G-W%V-%u = %Y-%j"), + Ok(ymd(2015, 2, 2)) + ); + assert_eq!( + NaiveDate::parse_from_str("Fri, 09 Aug 13", "%a, %d %b %y"), + Ok(ymd(2013, 8, 9)) + ); + assert!(NaiveDate::parse_from_str("Sat, 09 Aug 2013", "%a, %d %b %Y").is_err()); + assert!(NaiveDate::parse_from_str("2014-57", "%Y-%m-%d").is_err()); + assert!(NaiveDate::parse_from_str("2014", "%Y").is_err()); // insufficient + } + + #[test] + fn test_date_format() { + let d = NaiveDate::from_ymd_opt(2012, 3, 4).unwrap(); + assert_eq!(d.format("%Y,%C,%y,%G,%g").to_string(), "2012,20,12,2012,12"); + assert_eq!(d.format("%m,%b,%h,%B").to_string(), "03,Mar,Mar,March"); + assert_eq!(d.format("%d,%e").to_string(), "04, 4"); + assert_eq!(d.format("%U,%W,%V").to_string(), "10,09,09"); + assert_eq!(d.format("%a,%A,%w,%u").to_string(), "Sun,Sunday,0,7"); + assert_eq!(d.format("%j").to_string(), "064"); // since 2012 is a leap year + assert_eq!(d.format("%D,%x").to_string(), "03/04/12,03/04/12"); + assert_eq!(d.format("%F").to_string(), "2012-03-04"); + assert_eq!(d.format("%v").to_string(), " 4-Mar-2012"); + assert_eq!(d.format("%t%n%%%n%t").to_string(), "\t\n%\n\t"); + + // non-four-digit years + assert_eq!( + NaiveDate::from_ymd_opt(12345, 1, 1).unwrap().format("%Y").to_string(), + "+12345" + ); + assert_eq!(NaiveDate::from_ymd_opt(1234, 1, 1).unwrap().format("%Y").to_string(), "1234"); + assert_eq!(NaiveDate::from_ymd_opt(123, 1, 1).unwrap().format("%Y").to_string(), "0123"); + assert_eq!(NaiveDate::from_ymd_opt(12, 1, 1).unwrap().format("%Y").to_string(), "0012"); + assert_eq!(NaiveDate::from_ymd_opt(1, 1, 1).unwrap().format("%Y").to_string(), "0001"); + assert_eq!(NaiveDate::from_ymd_opt(0, 1, 1).unwrap().format("%Y").to_string(), "0000"); + assert_eq!(NaiveDate::from_ymd_opt(-1, 1, 1).unwrap().format("%Y").to_string(), "-0001"); + assert_eq!(NaiveDate::from_ymd_opt(-12, 1, 1).unwrap().format("%Y").to_string(), "-0012"); + assert_eq!(NaiveDate::from_ymd_opt(-123, 1, 1).unwrap().format("%Y").to_string(), "-0123"); + assert_eq!(NaiveDate::from_ymd_opt(-1234, 1, 1).unwrap().format("%Y").to_string(), "-1234"); + assert_eq!( + NaiveDate::from_ymd_opt(-12345, 1, 1).unwrap().format("%Y").to_string(), + "-12345" + ); + + // corner cases + assert_eq!( + NaiveDate::from_ymd_opt(2007, 12, 31).unwrap().format("%G,%g,%U,%W,%V").to_string(), + "2008,08,53,53,01" + ); + assert_eq!( + NaiveDate::from_ymd_opt(2010, 1, 3).unwrap().format("%G,%g,%U,%W,%V").to_string(), + "2009,09,01,00,53" + ); + } + + #[test] + fn test_day_iterator_limit() { + assert_eq!(NaiveDate::from_ymd_opt(262143, 12, 29).unwrap().iter_days().take(4).count(), 2); + assert_eq!( + NaiveDate::from_ymd_opt(-262144, 1, 3).unwrap().iter_days().rev().take(4).count(), + 2 + ); + } + + #[test] + fn test_week_iterator_limit() { + assert_eq!( + NaiveDate::from_ymd_opt(262143, 12, 12).unwrap().iter_weeks().take(4).count(), + 2 + ); + assert_eq!( + NaiveDate::from_ymd_opt(-262144, 1, 15).unwrap().iter_weeks().rev().take(4).count(), + 2 + ); + } + + #[test] + fn test_naiveweek() { + let date = NaiveDate::from_ymd_opt(2022, 5, 18).unwrap(); + let asserts = vec![ + (Weekday::Mon, "2022-05-16", "2022-05-22"), + (Weekday::Tue, "2022-05-17", "2022-05-23"), + (Weekday::Wed, "2022-05-18", "2022-05-24"), + (Weekday::Thu, "2022-05-12", "2022-05-18"), + (Weekday::Fri, "2022-05-13", "2022-05-19"), + (Weekday::Sat, "2022-05-14", "2022-05-20"), + (Weekday::Sun, "2022-05-15", "2022-05-21"), + ]; + for (start, first_day, last_day) in asserts { + let week = date.week(start); + let days = week.days(); + assert_eq!(Ok(week.first_day()), NaiveDate::parse_from_str(first_day, "%Y-%m-%d")); + assert_eq!(Ok(week.last_day()), NaiveDate::parse_from_str(last_day, "%Y-%m-%d")); + assert!(days.contains(&date)); + } + } +} diff --git a/javascript-engine/external/chrono/src/naive/datetime/mod.rs b/javascript-engine/external/chrono/src/naive/datetime/mod.rs new file mode 100644 index 0000000..c34813f --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/datetime/mod.rs @@ -0,0 +1,1936 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! ISO 8601 date and time without timezone. + +#[cfg(any(feature = "alloc", feature = "std", test))] +use core::borrow::Borrow; +use core::convert::TryFrom; +use core::fmt::Write; +use core::ops::{Add, AddAssign, Sub, SubAssign}; +use core::{fmt, str}; + +use num_integer::div_mod_floor; +use num_traits::ToPrimitive; +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +#[cfg(any(feature = "alloc", feature = "std", test))] +use crate::format::DelayedFormat; +use crate::format::{parse, ParseError, ParseResult, Parsed, StrftimeItems}; +use crate::format::{Fixed, Item, Numeric, Pad}; +use crate::naive::{Days, IsoWeek, NaiveDate, NaiveTime}; +use crate::oldtime::Duration as OldDuration; +use crate::{DateTime, Datelike, LocalResult, Months, TimeZone, Timelike, Weekday}; +use core::cmp::Ordering; + +#[cfg(feature = "rustc-serialize")] +pub(super) mod rustc_serialize; + +/// Tools to help serializing/deserializing `NaiveDateTime`s +#[cfg(feature = "serde")] +pub(crate) mod serde; + +#[cfg(test)] +mod tests; + +/// The tight upper bound guarantees that a duration with `|Duration| >= 2^MAX_SECS_BITS` +/// will always overflow the addition with any date and time type. +/// +/// So why is this needed? `Duration::seconds(rhs)` may overflow, and we don't have +/// an alternative returning `Option` or `Result`. Thus we need some early bound to avoid +/// touching that call when we are already sure that it WILL overflow... +const MAX_SECS_BITS: usize = 44; + +/// Number of nanoseconds in a millisecond +const NANOS_IN_MILLISECOND: u32 = 1_000_000; +/// Number of nanoseconds in a second +const NANOS_IN_SECOND: u32 = 1000 * NANOS_IN_MILLISECOND; + +/// The minimum possible `NaiveDateTime`. +#[deprecated(since = "0.4.20", note = "Use NaiveDateTime::MIN instead")] +pub const MIN_DATETIME: NaiveDateTime = NaiveDateTime::MIN; +/// The maximum possible `NaiveDateTime`. +#[deprecated(since = "0.4.20", note = "Use NaiveDateTime::MAX instead")] +pub const MAX_DATETIME: NaiveDateTime = NaiveDateTime::MAX; + +/// ISO 8601 combined date and time without timezone. +/// +/// # Example +/// +/// `NaiveDateTime` is commonly created from [`NaiveDate`](./struct.NaiveDate.html). +/// +/// ``` +/// use chrono::{NaiveDate, NaiveDateTime}; +/// +/// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_opt(9, 10, 11).unwrap(); +/// # let _ = dt; +/// ``` +/// +/// You can use typical [date-like](../trait.Datelike.html) and +/// [time-like](../trait.Timelike.html) methods, +/// provided that relevant traits are in the scope. +/// +/// ``` +/// # use chrono::{NaiveDate, NaiveDateTime}; +/// # let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_opt(9, 10, 11).unwrap(); +/// use chrono::{Datelike, Timelike, Weekday}; +/// +/// assert_eq!(dt.weekday(), Weekday::Fri); +/// assert_eq!(dt.num_seconds_from_midnight(), 33011); +/// ``` +#[derive(PartialEq, Eq, Hash, PartialOrd, Ord, Copy, Clone)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))] +pub struct NaiveDateTime { + date: NaiveDate, + time: NaiveTime, +} + +/// The unit of a timestamp expressed in fractions of a second. +/// Currently either milliseconds or microseconds. +/// +/// This is a private type, used in the implementation of +/// [NaiveDateTime::from_timestamp_millis] and [NaiveDateTime::from_timestamp_micros]. +#[derive(Clone, Copy, Debug)] +enum TimestampUnit { + Millis, + Micros, +} + +impl TimestampUnit { + fn per_second(self) -> u32 { + match self { + TimestampUnit::Millis => 1_000, + TimestampUnit::Micros => 1_000_000, + } + } + fn nanos_per(self) -> u32 { + match self { + TimestampUnit::Millis => 1_000_000, + TimestampUnit::Micros => 1_000, + } + } +} + +impl NaiveDateTime { + /// Makes a new `NaiveDateTime` from date and time components. + /// Equivalent to [`date.and_time(time)`](./struct.NaiveDate.html#method.and_time) + /// and many other helper constructors on `NaiveDate`. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveTime, NaiveDateTime}; + /// + /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); + /// let t = NaiveTime::from_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// + /// let dt = NaiveDateTime::new(d, t); + /// assert_eq!(dt.date(), d); + /// assert_eq!(dt.time(), t); + /// ``` + #[inline] + pub fn new(date: NaiveDate, time: NaiveTime) -> NaiveDateTime { + NaiveDateTime { date, time } + } + + /// Makes a new `NaiveDateTime` corresponding to a UTC date and time, + /// from the number of non-leap seconds + /// since the midnight UTC on January 1, 1970 (aka "UNIX timestamp") + /// and the number of nanoseconds since the last whole non-leap second. + /// + /// For a non-naive version of this function see + /// [`TimeZone::timestamp`](../offset/trait.TimeZone.html#method.timestamp). + /// + /// The nanosecond part can exceed 1,000,000,000 in order to represent the + /// [leap second](./struct.NaiveTime.html#leap-second-handling). (The true "UNIX + /// timestamp" cannot represent a leap second unambiguously.) + /// + /// Panics on the out-of-range number of seconds and/or invalid nanosecond. + #[deprecated(since = "0.4.23", note = "use `from_timestamp_opt()` instead")] + #[inline] + pub fn from_timestamp(secs: i64, nsecs: u32) -> NaiveDateTime { + let datetime = NaiveDateTime::from_timestamp_opt(secs, nsecs); + datetime.expect("invalid or out-of-range datetime") + } + + /// Creates a new [NaiveDateTime] from milliseconds since the UNIX epoch. + /// + /// The UNIX epoch starts on midnight, January 1, 1970, UTC. + /// + /// Returns `None` on an out-of-range number of milliseconds. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDateTime; + /// let timestamp_millis: i64 = 1662921288000; //Sunday, September 11, 2022 6:34:48 PM + /// let naive_datetime = NaiveDateTime::from_timestamp_millis(timestamp_millis); + /// assert!(naive_datetime.is_some()); + /// assert_eq!(timestamp_millis, naive_datetime.unwrap().timestamp_millis()); + /// + /// // Negative timestamps (before the UNIX epoch) are supported as well. + /// let timestamp_millis: i64 = -2208936075000; //Mon Jan 01 1900 14:38:45 GMT+0000 + /// let naive_datetime = NaiveDateTime::from_timestamp_millis(timestamp_millis); + /// assert!(naive_datetime.is_some()); + /// assert_eq!(timestamp_millis, naive_datetime.unwrap().timestamp_millis()); + /// ``` + #[inline] + pub fn from_timestamp_millis(millis: i64) -> Option { + Self::from_timestamp_unit(millis, TimestampUnit::Millis) + } + + /// Creates a new [NaiveDateTime] from microseconds since the UNIX epoch. + /// + /// The UNIX epoch starts on midnight, January 1, 1970, UTC. + /// + /// Returns `None` on an out-of-range number of microseconds. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDateTime; + /// let timestamp_micros: i64 = 1662921288000000; //Sunday, September 11, 2022 6:34:48 PM + /// let naive_datetime = NaiveDateTime::from_timestamp_micros(timestamp_micros); + /// assert!(naive_datetime.is_some()); + /// assert_eq!(timestamp_micros, naive_datetime.unwrap().timestamp_micros()); + /// + /// // Negative timestamps (before the UNIX epoch) are supported as well. + /// let timestamp_micros: i64 = -2208936075000000; //Mon Jan 01 1900 14:38:45 GMT+0000 + /// let naive_datetime = NaiveDateTime::from_timestamp_micros(timestamp_micros); + /// assert!(naive_datetime.is_some()); + /// assert_eq!(timestamp_micros, naive_datetime.unwrap().timestamp_micros()); + /// ``` + #[inline] + pub fn from_timestamp_micros(micros: i64) -> Option { + Self::from_timestamp_unit(micros, TimestampUnit::Micros) + } + + /// Makes a new `NaiveDateTime` corresponding to a UTC date and time, + /// from the number of non-leap seconds + /// since the midnight UTC on January 1, 1970 (aka "UNIX timestamp") + /// and the number of nanoseconds since the last whole non-leap second. + /// + /// The nanosecond part can exceed 1,000,000,000 + /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). + /// (The true "UNIX timestamp" cannot represent a leap second unambiguously.) + /// + /// Returns `None` on the out-of-range number of seconds (more than 262 000 years away + /// from common era) and/or invalid nanosecond (2 seconds or more). + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDateTime, NaiveDate}; + /// use std::i64; + /// + /// let from_timestamp_opt = NaiveDateTime::from_timestamp_opt; + /// + /// assert!(from_timestamp_opt(0, 0).is_some()); + /// assert!(from_timestamp_opt(0, 999_999_999).is_some()); + /// assert!(from_timestamp_opt(0, 1_500_000_000).is_some()); // leap second + /// assert!(from_timestamp_opt(0, 2_000_000_000).is_none()); + /// assert!(from_timestamp_opt(i64::MAX, 0).is_none()); + /// ``` + #[inline] + pub fn from_timestamp_opt(secs: i64, nsecs: u32) -> Option { + let (days, secs) = div_mod_floor(secs, 86_400); + let date = days + .to_i32() + .and_then(|days| days.checked_add(719_163)) + .and_then(NaiveDate::from_num_days_from_ce_opt); + let time = NaiveTime::from_num_seconds_from_midnight_opt(secs as u32, nsecs); + match (date, time) { + (Some(date), Some(time)) => Some(NaiveDateTime { date, time }), + (_, _) => None, + } + } + + /// Parses a string with the specified format string and returns a new `NaiveDateTime`. + /// See the [`format::strftime` module](../format/strftime/index.html) + /// on the supported escape sequences. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDateTime, NaiveDate}; + /// + /// let parse_from_str = NaiveDateTime::parse_from_str; + /// + /// assert_eq!(parse_from_str("2015-09-05 23:56:04", "%Y-%m-%d %H:%M:%S"), + /// Ok(NaiveDate::from_ymd_opt(2015, 9, 5).unwrap().and_hms_opt(23, 56, 4).unwrap())); + /// assert_eq!(parse_from_str("5sep2015pm012345.6789", "%d%b%Y%p%I%M%S%.f"), + /// Ok(NaiveDate::from_ymd_opt(2015, 9, 5).unwrap().and_hms_micro_opt(13, 23, 45, 678_900).unwrap())); + /// ``` + /// + /// Offset is ignored for the purpose of parsing. + /// + /// ``` + /// # use chrono::{NaiveDateTime, NaiveDate}; + /// # let parse_from_str = NaiveDateTime::parse_from_str; + /// assert_eq!(parse_from_str("2014-5-17T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), + /// Ok(NaiveDate::from_ymd_opt(2014, 5, 17).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// ``` + /// + /// [Leap seconds](./struct.NaiveTime.html#leap-second-handling) are correctly handled by + /// treating any time of the form `hh:mm:60` as a leap second. + /// (This equally applies to the formatting, so the round trip is possible.) + /// + /// ``` + /// # use chrono::{NaiveDateTime, NaiveDate}; + /// # let parse_from_str = NaiveDateTime::parse_from_str; + /// assert_eq!(parse_from_str("2015-07-01 08:59:60.123", "%Y-%m-%d %H:%M:%S%.f"), + /// Ok(NaiveDate::from_ymd_opt(2015, 7, 1).unwrap().and_hms_milli_opt(8, 59, 59, 1_123).unwrap())); + /// ``` + /// + /// Missing seconds are assumed to be zero, + /// but out-of-bound times or insufficient fields are errors otherwise. + /// + /// ``` + /// # use chrono::{NaiveDateTime, NaiveDate}; + /// # let parse_from_str = NaiveDateTime::parse_from_str; + /// assert_eq!(parse_from_str("94/9/4 7:15", "%y/%m/%d %H:%M"), + /// Ok(NaiveDate::from_ymd_opt(1994, 9, 4).unwrap().and_hms_opt(7, 15, 0).unwrap())); + /// + /// assert!(parse_from_str("04m33s", "%Mm%Ss").is_err()); + /// assert!(parse_from_str("94/9/4 12", "%y/%m/%d %H").is_err()); + /// assert!(parse_from_str("94/9/4 17:60", "%y/%m/%d %H:%M").is_err()); + /// assert!(parse_from_str("94/9/4 24:00:00", "%y/%m/%d %H:%M:%S").is_err()); + /// ``` + /// + /// All parsed fields should be consistent to each other, otherwise it's an error. + /// + /// ``` + /// # use chrono::NaiveDateTime; + /// # let parse_from_str = NaiveDateTime::parse_from_str; + /// let fmt = "%Y-%m-%d %H:%M:%S = UNIX timestamp %s"; + /// assert!(parse_from_str("2001-09-09 01:46:39 = UNIX timestamp 999999999", fmt).is_ok()); + /// assert!(parse_from_str("1970-01-01 00:00:00 = UNIX timestamp 1", fmt).is_err()); + /// ``` + pub fn parse_from_str(s: &str, fmt: &str) -> ParseResult { + let mut parsed = Parsed::new(); + parse(&mut parsed, s, StrftimeItems::new(fmt))?; + parsed.to_naive_datetime_with_offset(0) // no offset adjustment + } + + /// Retrieves a date component. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let dt = NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_opt(9, 10, 11).unwrap(); + /// assert_eq!(dt.date(), NaiveDate::from_ymd_opt(2016, 7, 8).unwrap()); + /// ``` + #[inline] + pub fn date(&self) -> NaiveDate { + self.date + } + + /// Retrieves a time component. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveTime}; + /// + /// let dt = NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_opt(9, 10, 11).unwrap(); + /// assert_eq!(dt.time(), NaiveTime::from_hms_opt(9, 10, 11).unwrap()); + /// ``` + #[inline] + pub fn time(&self) -> NaiveTime { + self.time + } + + /// Returns the number of non-leap seconds since the midnight on January 1, 1970. + /// + /// Note that this does *not* account for the timezone! + /// The true "UNIX timestamp" would count seconds since the midnight *UTC* on the epoch. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let dt = NaiveDate::from_ymd_opt(1970, 1, 1).unwrap().and_hms_milli_opt(0, 0, 1, 980).unwrap(); + /// assert_eq!(dt.timestamp(), 1); + /// + /// let dt = NaiveDate::from_ymd_opt(2001, 9, 9).unwrap().and_hms_opt(1, 46, 40).unwrap(); + /// assert_eq!(dt.timestamp(), 1_000_000_000); + /// + /// let dt = NaiveDate::from_ymd_opt(1969, 12, 31).unwrap().and_hms_opt(23, 59, 59).unwrap(); + /// assert_eq!(dt.timestamp(), -1); + /// + /// let dt = NaiveDate::from_ymd_opt(-1, 1, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(); + /// assert_eq!(dt.timestamp(), -62198755200); + /// ``` + #[inline] + pub fn timestamp(&self) -> i64 { + const UNIX_EPOCH_DAY: i64 = 719_163; + let gregorian_day = i64::from(self.date.num_days_from_ce()); + let seconds_from_midnight = i64::from(self.time.num_seconds_from_midnight()); + (gregorian_day - UNIX_EPOCH_DAY) * 86_400 + seconds_from_midnight + } + + /// Returns the number of non-leap *milliseconds* since midnight on January 1, 1970. + /// + /// Note that this does *not* account for the timezone! + /// The true "UNIX timestamp" would count seconds since the midnight *UTC* on the epoch. + /// + /// Note also that this does reduce the number of years that can be + /// represented from ~584 Billion to ~584 Million. (If this is a problem, + /// please file an issue to let me know what domain needs millisecond + /// precision over billions of years, I'm curious.) + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let dt = NaiveDate::from_ymd_opt(1970, 1, 1).unwrap().and_hms_milli_opt(0, 0, 1, 444).unwrap(); + /// assert_eq!(dt.timestamp_millis(), 1_444); + /// + /// let dt = NaiveDate::from_ymd_opt(2001, 9, 9).unwrap().and_hms_milli_opt(1, 46, 40, 555).unwrap(); + /// assert_eq!(dt.timestamp_millis(), 1_000_000_000_555); + /// + /// let dt = NaiveDate::from_ymd_opt(1969, 12, 31).unwrap().and_hms_milli_opt(23, 59, 59, 100).unwrap(); + /// assert_eq!(dt.timestamp_millis(), -900); + /// ``` + #[inline] + pub fn timestamp_millis(&self) -> i64 { + let as_ms = self.timestamp() * 1000; + as_ms + i64::from(self.timestamp_subsec_millis()) + } + + /// Returns the number of non-leap *microseconds* since midnight on January 1, 1970. + /// + /// Note that this does *not* account for the timezone! + /// The true "UNIX timestamp" would count seconds since the midnight *UTC* on the epoch. + /// + /// Note also that this does reduce the number of years that can be + /// represented from ~584 Billion to ~584 Thousand. (If this is a problem, + /// please file an issue to let me know what domain needs microsecond + /// precision over millennia, I'm curious.) + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let dt = NaiveDate::from_ymd_opt(1970, 1, 1).unwrap().and_hms_micro_opt(0, 0, 1, 444).unwrap(); + /// assert_eq!(dt.timestamp_micros(), 1_000_444); + /// + /// let dt = NaiveDate::from_ymd_opt(2001, 9, 9).unwrap().and_hms_micro_opt(1, 46, 40, 555).unwrap(); + /// assert_eq!(dt.timestamp_micros(), 1_000_000_000_000_555); + /// ``` + #[inline] + pub fn timestamp_micros(&self) -> i64 { + let as_us = self.timestamp() * 1_000_000; + as_us + i64::from(self.timestamp_subsec_micros()) + } + + /// Returns the number of non-leap *nanoseconds* since midnight on January 1, 1970. + /// + /// Note that this does *not* account for the timezone! + /// The true "UNIX timestamp" would count seconds since the midnight *UTC* on the epoch. + /// + /// # Panics + /// + /// Note also that this does reduce the number of years that can be + /// represented from ~584 Billion to ~584 years. The dates that can be + /// represented as nanoseconds are between 1677-09-21T00:12:44.0 and + /// 2262-04-11T23:47:16.854775804. + /// + /// (If this is a problem, please file an issue to let me know what domain + /// needs nanosecond precision over millennia, I'm curious.) + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime}; + /// + /// let dt = NaiveDate::from_ymd_opt(1970, 1, 1).unwrap().and_hms_nano_opt(0, 0, 1, 444).unwrap(); + /// assert_eq!(dt.timestamp_nanos(), 1_000_000_444); + /// + /// let dt = NaiveDate::from_ymd_opt(2001, 9, 9).unwrap().and_hms_nano_opt(1, 46, 40, 555).unwrap(); + /// + /// const A_BILLION: i64 = 1_000_000_000; + /// let nanos = dt.timestamp_nanos(); + /// assert_eq!(nanos, 1_000_000_000_000_000_555); + /// assert_eq!( + /// dt, + /// NaiveDateTime::from_timestamp(nanos / A_BILLION, (nanos % A_BILLION) as u32) + /// ); + /// ``` + #[inline] + pub fn timestamp_nanos(&self) -> i64 { + let as_ns = self.timestamp() * 1_000_000_000; + as_ns + i64::from(self.timestamp_subsec_nanos()) + } + + /// Returns the number of milliseconds since the last whole non-leap second. + /// + /// The return value ranges from 0 to 999, + /// or for [leap seconds](./struct.NaiveTime.html#leap-second-handling), to 1,999. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let dt = NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_nano_opt(9, 10, 11, 123_456_789).unwrap(); + /// assert_eq!(dt.timestamp_subsec_millis(), 123); + /// + /// let dt = NaiveDate::from_ymd_opt(2015, 7, 1).unwrap().and_hms_nano_opt(8, 59, 59, 1_234_567_890).unwrap(); + /// assert_eq!(dt.timestamp_subsec_millis(), 1_234); + /// ``` + #[inline] + pub fn timestamp_subsec_millis(&self) -> u32 { + self.timestamp_subsec_nanos() / 1_000_000 + } + + /// Returns the number of microseconds since the last whole non-leap second. + /// + /// The return value ranges from 0 to 999,999, + /// or for [leap seconds](./struct.NaiveTime.html#leap-second-handling), to 1,999,999. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let dt = NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_nano_opt(9, 10, 11, 123_456_789).unwrap(); + /// assert_eq!(dt.timestamp_subsec_micros(), 123_456); + /// + /// let dt = NaiveDate::from_ymd_opt(2015, 7, 1).unwrap().and_hms_nano_opt(8, 59, 59, 1_234_567_890).unwrap(); + /// assert_eq!(dt.timestamp_subsec_micros(), 1_234_567); + /// ``` + #[inline] + pub fn timestamp_subsec_micros(&self) -> u32 { + self.timestamp_subsec_nanos() / 1_000 + } + + /// Returns the number of nanoseconds since the last whole non-leap second. + /// + /// The return value ranges from 0 to 999,999,999, + /// or for [leap seconds](./struct.NaiveTime.html#leap-second-handling), to 1,999,999,999. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let dt = NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_nano_opt(9, 10, 11, 123_456_789).unwrap(); + /// assert_eq!(dt.timestamp_subsec_nanos(), 123_456_789); + /// + /// let dt = NaiveDate::from_ymd_opt(2015, 7, 1).unwrap().and_hms_nano_opt(8, 59, 59, 1_234_567_890).unwrap(); + /// assert_eq!(dt.timestamp_subsec_nanos(), 1_234_567_890); + /// ``` + #[inline] + pub fn timestamp_subsec_nanos(&self) -> u32 { + self.time.nanosecond() + } + + /// Adds given `Duration` to the current date and time. + /// + /// As a part of Chrono's [leap second handling](./struct.NaiveTime.html#leap-second-handling), + /// the addition assumes that **there is no leap second ever**, + /// except when the `NaiveDateTime` itself represents a leap second + /// in which case the assumption becomes that **there is exactly a single leap second ever**. + /// + /// Returns `None` when it will result in overflow. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveDate}; + /// + /// let from_ymd = NaiveDate::from_ymd; + /// + /// let d = from_ymd(2016, 7, 8); + /// let hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap(); + /// assert_eq!(hms(3, 5, 7).checked_add_signed(Duration::zero()), + /// Some(hms(3, 5, 7))); + /// assert_eq!(hms(3, 5, 7).checked_add_signed(Duration::seconds(1)), + /// Some(hms(3, 5, 8))); + /// assert_eq!(hms(3, 5, 7).checked_add_signed(Duration::seconds(-1)), + /// Some(hms(3, 5, 6))); + /// assert_eq!(hms(3, 5, 7).checked_add_signed(Duration::seconds(3600 + 60)), + /// Some(hms(4, 6, 7))); + /// assert_eq!(hms(3, 5, 7).checked_add_signed(Duration::seconds(86_400)), + /// Some(from_ymd(2016, 7, 9).and_hms_opt(3, 5, 7).unwrap())); + /// + /// let hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap(); + /// assert_eq!(hmsm(3, 5, 7, 980).checked_add_signed(Duration::milliseconds(450)), + /// Some(hmsm(3, 5, 8, 430))); + /// ``` + /// + /// Overflow returns `None`. + /// + /// ``` + /// # use chrono::{Duration, NaiveDate}; + /// # let hms = |h, m, s| NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_opt(h, m, s).unwrap(); + /// assert_eq!(hms(3, 5, 7).checked_add_signed(Duration::days(1_000_000_000)), None); + /// ``` + /// + /// Leap seconds are handled, + /// but the addition assumes that it is the only leap second happened. + /// + /// ``` + /// # use chrono::{Duration, NaiveDate}; + /// # let from_ymd = NaiveDate::from_ymd; + /// # let hmsm = |h, m, s, milli| from_ymd(2016, 7, 8).and_hms_milli_opt(h, m, s, milli).unwrap(); + /// let leap = hmsm(3, 5, 59, 1_300); + /// assert_eq!(leap.checked_add_signed(Duration::zero()), + /// Some(hmsm(3, 5, 59, 1_300))); + /// assert_eq!(leap.checked_add_signed(Duration::milliseconds(-500)), + /// Some(hmsm(3, 5, 59, 800))); + /// assert_eq!(leap.checked_add_signed(Duration::milliseconds(500)), + /// Some(hmsm(3, 5, 59, 1_800))); + /// assert_eq!(leap.checked_add_signed(Duration::milliseconds(800)), + /// Some(hmsm(3, 6, 0, 100))); + /// assert_eq!(leap.checked_add_signed(Duration::seconds(10)), + /// Some(hmsm(3, 6, 9, 300))); + /// assert_eq!(leap.checked_add_signed(Duration::seconds(-10)), + /// Some(hmsm(3, 5, 50, 300))); + /// assert_eq!(leap.checked_add_signed(Duration::days(1)), + /// Some(from_ymd(2016, 7, 9).and_hms_milli_opt(3, 5, 59, 300).unwrap())); + /// ``` + pub fn checked_add_signed(self, rhs: OldDuration) -> Option { + let (time, rhs) = self.time.overflowing_add_signed(rhs); + + // early checking to avoid overflow in OldDuration::seconds + if rhs <= (-1 << MAX_SECS_BITS) || rhs >= (1 << MAX_SECS_BITS) { + return None; + } + + let date = self.date.checked_add_signed(OldDuration::seconds(rhs))?; + Some(NaiveDateTime { date, time }) + } + + /// Adds given `Months` to the current date and time. + /// + /// Returns `None` when it will result in overflow. + /// + /// Overflow returns `None`. + /// + /// # Example + /// + /// ``` + /// use std::str::FromStr; + /// use chrono::{Months, NaiveDate, NaiveDateTime}; + /// + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap().and_hms_opt(1, 0, 0).unwrap() + /// .checked_add_months(Months::new(1)), + /// Some(NaiveDate::from_ymd_opt(2014, 2, 1).unwrap().and_hms_opt(1, 0, 0).unwrap()) + /// ); + /// + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap().and_hms_opt(1, 0, 0).unwrap() + /// .checked_add_months(Months::new(core::i32::MAX as u32 + 1)), + /// None + /// ); + /// ``` + pub fn checked_add_months(self, rhs: Months) -> Option { + Some(Self { date: self.date.checked_add_months(rhs)?, time: self.time }) + } + + /// Subtracts given `Duration` from the current date and time. + /// + /// As a part of Chrono's [leap second handling](./struct.NaiveTime.html#leap-second-handling), + /// the subtraction assumes that **there is no leap second ever**, + /// except when the `NaiveDateTime` itself represents a leap second + /// in which case the assumption becomes that **there is exactly a single leap second ever**. + /// + /// Returns `None` when it will result in overflow. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveDate}; + /// + /// let from_ymd = NaiveDate::from_ymd; + /// + /// let d = from_ymd(2016, 7, 8); + /// let hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap(); + /// assert_eq!(hms(3, 5, 7).checked_sub_signed(Duration::zero()), + /// Some(hms(3, 5, 7))); + /// assert_eq!(hms(3, 5, 7).checked_sub_signed(Duration::seconds(1)), + /// Some(hms(3, 5, 6))); + /// assert_eq!(hms(3, 5, 7).checked_sub_signed(Duration::seconds(-1)), + /// Some(hms(3, 5, 8))); + /// assert_eq!(hms(3, 5, 7).checked_sub_signed(Duration::seconds(3600 + 60)), + /// Some(hms(2, 4, 7))); + /// assert_eq!(hms(3, 5, 7).checked_sub_signed(Duration::seconds(86_400)), + /// Some(from_ymd(2016, 7, 7).and_hms_opt(3, 5, 7).unwrap())); + /// + /// let hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap(); + /// assert_eq!(hmsm(3, 5, 7, 450).checked_sub_signed(Duration::milliseconds(670)), + /// Some(hmsm(3, 5, 6, 780))); + /// ``` + /// + /// Overflow returns `None`. + /// + /// ``` + /// # use chrono::{Duration, NaiveDate}; + /// # let hms = |h, m, s| NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_opt(h, m, s).unwrap(); + /// assert_eq!(hms(3, 5, 7).checked_sub_signed(Duration::days(1_000_000_000)), None); + /// ``` + /// + /// Leap seconds are handled, + /// but the subtraction assumes that it is the only leap second happened. + /// + /// ``` + /// # use chrono::{Duration, NaiveDate}; + /// # let from_ymd = NaiveDate::from_ymd; + /// # let hmsm = |h, m, s, milli| from_ymd(2016, 7, 8).and_hms_milli_opt(h, m, s, milli).unwrap(); + /// let leap = hmsm(3, 5, 59, 1_300); + /// assert_eq!(leap.checked_sub_signed(Duration::zero()), + /// Some(hmsm(3, 5, 59, 1_300))); + /// assert_eq!(leap.checked_sub_signed(Duration::milliseconds(200)), + /// Some(hmsm(3, 5, 59, 1_100))); + /// assert_eq!(leap.checked_sub_signed(Duration::milliseconds(500)), + /// Some(hmsm(3, 5, 59, 800))); + /// assert_eq!(leap.checked_sub_signed(Duration::seconds(60)), + /// Some(hmsm(3, 5, 0, 300))); + /// assert_eq!(leap.checked_sub_signed(Duration::days(1)), + /// Some(from_ymd(2016, 7, 7).and_hms_milli_opt(3, 6, 0, 300).unwrap())); + /// ``` + pub fn checked_sub_signed(self, rhs: OldDuration) -> Option { + let (time, rhs) = self.time.overflowing_sub_signed(rhs); + + // early checking to avoid overflow in OldDuration::seconds + if rhs <= (-1 << MAX_SECS_BITS) || rhs >= (1 << MAX_SECS_BITS) { + return None; + } + + let date = self.date.checked_sub_signed(OldDuration::seconds(rhs))?; + Some(NaiveDateTime { date, time }) + } + + /// Subtracts given `Months` from the current date and time. + /// + /// Returns `None` when it will result in overflow. + /// + /// Overflow returns `None`. + /// + /// # Example + /// + /// ``` + /// use std::str::FromStr; + /// use chrono::{Months, NaiveDate, NaiveDateTime}; + /// + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap().and_hms_opt(1, 0, 0).unwrap() + /// .checked_sub_months(Months::new(1)), + /// Some(NaiveDate::from_ymd_opt(2013, 12, 1).unwrap().and_hms_opt(1, 0, 0).unwrap()) + /// ); + /// + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap().and_hms_opt(1, 0, 0).unwrap() + /// .checked_sub_months(Months::new(core::i32::MAX as u32 + 1)), + /// None + /// ); + /// ``` + pub fn checked_sub_months(self, rhs: Months) -> Option { + Some(Self { date: self.date.checked_sub_months(rhs)?, time: self.time }) + } + + /// Add a duration in [`Days`] to the date part of the `NaiveDateTime` + /// + /// Returns `None` if the resulting date would be out of range. + pub fn checked_add_days(self, days: Days) -> Option { + Some(Self { date: self.date.checked_add_days(days)?, ..self }) + } + + /// Subtract a duration in [`Days`] from the date part of the `NaiveDateTime` + /// + /// Returns `None` if the resulting date would be out of range. + pub fn checked_sub_days(self, days: Days) -> Option { + Some(Self { date: self.date.checked_sub_days(days)?, ..self }) + } + + /// Subtracts another `NaiveDateTime` from the current date and time. + /// This does not overflow or underflow at all. + /// + /// As a part of Chrono's [leap second handling](./struct.NaiveTime.html#leap-second-handling), + /// the subtraction assumes that **there is no leap second ever**, + /// except when any of the `NaiveDateTime`s themselves represents a leap second + /// in which case the assumption becomes that + /// **there are exactly one (or two) leap second(s) ever**. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveDate}; + /// + /// let from_ymd = NaiveDate::from_ymd; + /// + /// let d = from_ymd(2016, 7, 8); + /// assert_eq!(d.and_hms_opt(3, 5, 7).unwrap().signed_duration_since(d.and_hms_opt(2, 4, 6).unwrap()), + /// Duration::seconds(3600 + 60 + 1)); + /// + /// // July 8 is 190th day in the year 2016 + /// let d0 = from_ymd(2016, 1, 1); + /// assert_eq!(d.and_hms_milli_opt(0, 7, 6, 500).unwrap().signed_duration_since(d0.and_hms_opt(0, 0, 0).unwrap()), + /// Duration::seconds(189 * 86_400 + 7 * 60 + 6) + Duration::milliseconds(500)); + /// ``` + /// + /// Leap seconds are handled, but the subtraction assumes that + /// there were no other leap seconds happened. + /// + /// ``` + /// # use chrono::{Duration, NaiveDate}; + /// # let from_ymd = NaiveDate::from_ymd; + /// let leap = from_ymd(2015, 6, 30).and_hms_milli_opt(23, 59, 59, 1_500).unwrap(); + /// assert_eq!(leap.signed_duration_since(from_ymd(2015, 6, 30).and_hms_opt(23, 0, 0).unwrap()), + /// Duration::seconds(3600) + Duration::milliseconds(500)); + /// assert_eq!(from_ymd(2015, 7, 1).and_hms_opt(1, 0, 0).unwrap().signed_duration_since(leap), + /// Duration::seconds(3600) - Duration::milliseconds(500)); + /// ``` + pub fn signed_duration_since(self, rhs: NaiveDateTime) -> OldDuration { + self.date.signed_duration_since(rhs.date) + self.time.signed_duration_since(rhs.time) + } + + /// Formats the combined date and time with the specified formatting items. + /// Otherwise it is the same as the ordinary [`format`](#method.format) method. + /// + /// The `Iterator` of items should be `Clone`able, + /// since the resulting `DelayedFormat` value may be formatted multiple times. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// use chrono::format::strftime::StrftimeItems; + /// + /// let fmt = StrftimeItems::new("%Y-%m-%d %H:%M:%S"); + /// let dt = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap().and_hms_opt(23, 56, 4).unwrap(); + /// assert_eq!(dt.format_with_items(fmt.clone()).to_string(), "2015-09-05 23:56:04"); + /// assert_eq!(dt.format("%Y-%m-%d %H:%M:%S").to_string(), "2015-09-05 23:56:04"); + /// ``` + /// + /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. + /// + /// ``` + /// # use chrono::NaiveDate; + /// # use chrono::format::strftime::StrftimeItems; + /// # let fmt = StrftimeItems::new("%Y-%m-%d %H:%M:%S").clone(); + /// # let dt = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap().and_hms_opt(23, 56, 4).unwrap(); + /// assert_eq!(format!("{}", dt.format_with_items(fmt)), "2015-09-05 23:56:04"); + /// ``` + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format_with_items<'a, I, B>(&self, items: I) -> DelayedFormat + where + I: Iterator + Clone, + B: Borrow>, + { + DelayedFormat::new(Some(self.date), Some(self.time), items) + } + + /// Formats the combined date and time with the specified format string. + /// See the [`format::strftime` module](../format/strftime/index.html) + /// on the supported escape sequences. + /// + /// This returns a `DelayedFormat`, + /// which gets converted to a string only when actual formatting happens. + /// You may use the `to_string` method to get a `String`, + /// or just feed it into `print!` and other formatting macros. + /// (In this way it avoids the redundant memory allocation.) + /// + /// A wrong format string does *not* issue an error immediately. + /// Rather, converting or formatting the `DelayedFormat` fails. + /// You are recommended to immediately use `DelayedFormat` for this reason. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveDate; + /// + /// let dt = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap().and_hms_opt(23, 56, 4).unwrap(); + /// assert_eq!(dt.format("%Y-%m-%d %H:%M:%S").to_string(), "2015-09-05 23:56:04"); + /// assert_eq!(dt.format("around %l %p on %b %-d").to_string(), "around 11 PM on Sep 5"); + /// ``` + /// + /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. + /// + /// ``` + /// # use chrono::NaiveDate; + /// # let dt = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap().and_hms_opt(23, 56, 4).unwrap(); + /// assert_eq!(format!("{}", dt.format("%Y-%m-%d %H:%M:%S")), "2015-09-05 23:56:04"); + /// assert_eq!(format!("{}", dt.format("around %l %p on %b %-d")), "around 11 PM on Sep 5"); + /// ``` + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format<'a>(&self, fmt: &'a str) -> DelayedFormat> { + self.format_with_items(StrftimeItems::new(fmt)) + } + + /// Converts the `NaiveDateTime` into the timezone-aware `DateTime` + /// with the provided timezone, if possible. + /// + /// This can fail in cases where the local time represented by the `NaiveDateTime` + /// is not a valid local timestamp in the target timezone due to an offset transition + /// for example if the target timezone had a change from +00:00 to +01:00 + /// occuring at 2015-09-05 22:59:59, then a local time of 2015-09-05 23:56:04 + /// could never occur. Similarly, if the offset transitioned in the opposite direction + /// then there would be two local times of 2015-09-05 23:56:04, one at +00:00 and one + /// at +01:00. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Utc}; + /// let dt = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap().and_hms_opt(23, 56, 4).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.timezone(), Utc); + pub fn and_local_timezone(&self, tz: Tz) -> LocalResult> { + tz.from_local_datetime(self) + } + + /// The minimum possible `NaiveDateTime`. + pub const MIN: Self = Self { date: NaiveDate::MIN, time: NaiveTime::MIN }; + /// The maximum possible `NaiveDateTime`. + pub const MAX: Self = Self { date: NaiveDate::MAX, time: NaiveTime::MAX }; + + /// Creates a new [NaiveDateTime] from milliseconds or microseconds since the UNIX epoch. + /// + /// This is a private function used by [from_timestamp_millis] and [from_timestamp_micros]. + #[inline] + fn from_timestamp_unit(value: i64, unit: TimestampUnit) -> Option { + let (secs, subsecs) = + (value / i64::from(unit.per_second()), value % i64::from(unit.per_second())); + + match subsecs.cmp(&0) { + Ordering::Less => { + // in the case where our subsec part is negative, then we are actually in the earlier second + // hence we subtract one from the seconds part, and we then add a whole second worth of nanos + // to our nanos part. Due to the use of u32 datatype, it is more convenient to subtract + // the absolute value of the subsec nanos from a whole second worth of nanos + let nsecs = u32::try_from(subsecs.abs()).ok()? * unit.nanos_per(); + NaiveDateTime::from_timestamp_opt( + secs.checked_sub(1)?, + NANOS_IN_SECOND.checked_sub(nsecs)?, + ) + } + Ordering::Equal => NaiveDateTime::from_timestamp_opt(secs, 0), + Ordering::Greater => { + // convert the subsec millis into nanosecond scale so they can be supplied + // as the nanoseconds parameter + let nsecs = u32::try_from(subsecs).ok()? * unit.nanos_per(); + NaiveDateTime::from_timestamp_opt(secs, nsecs) + } + } + } +} + +impl Datelike for NaiveDateTime { + /// Returns the year number in the [calendar date](./index.html#calendar-date). + /// + /// See also the [`NaiveDate::year`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.year(), 2015); + /// ``` + #[inline] + fn year(&self) -> i32 { + self.date.year() + } + + /// Returns the month number starting from 1. + /// + /// The return value ranges from 1 to 12. + /// + /// See also the [`NaiveDate::month`](./struct.NaiveDate.html#method.month) method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.month(), 9); + /// ``` + #[inline] + fn month(&self) -> u32 { + self.date.month() + } + + /// Returns the month number starting from 0. + /// + /// The return value ranges from 0 to 11. + /// + /// See also the [`NaiveDate::month0`](./struct.NaiveDate.html#method.month0) method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.month0(), 8); + /// ``` + #[inline] + fn month0(&self) -> u32 { + self.date.month0() + } + + /// Returns the day of month starting from 1. + /// + /// The return value ranges from 1 to 31. (The last day of month differs by months.) + /// + /// See also the [`NaiveDate::day`](./struct.NaiveDate.html#method.day) method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.day(), 25); + /// ``` + #[inline] + fn day(&self) -> u32 { + self.date.day() + } + + /// Returns the day of month starting from 0. + /// + /// The return value ranges from 0 to 30. (The last day of month differs by months.) + /// + /// See also the [`NaiveDate::day0`](./struct.NaiveDate.html#method.day0) method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.day0(), 24); + /// ``` + #[inline] + fn day0(&self) -> u32 { + self.date.day0() + } + + /// Returns the day of year starting from 1. + /// + /// The return value ranges from 1 to 366. (The last day of year differs by years.) + /// + /// See also the [`NaiveDate::ordinal`](./struct.NaiveDate.html#method.ordinal) method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.ordinal(), 268); + /// ``` + #[inline] + fn ordinal(&self) -> u32 { + self.date.ordinal() + } + + /// Returns the day of year starting from 0. + /// + /// The return value ranges from 0 to 365. (The last day of year differs by years.) + /// + /// See also the [`NaiveDate::ordinal0`](./struct.NaiveDate.html#method.ordinal0) method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.ordinal0(), 267); + /// ``` + #[inline] + fn ordinal0(&self) -> u32 { + self.date.ordinal0() + } + + /// Returns the day of week. + /// + /// See also the [`NaiveDate::weekday`](./struct.NaiveDate.html#method.weekday) method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike, Weekday}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.weekday(), Weekday::Fri); + /// ``` + #[inline] + fn weekday(&self) -> Weekday { + self.date.weekday() + } + + #[inline] + fn iso_week(&self) -> IsoWeek { + self.date.iso_week() + } + + /// Makes a new `NaiveDateTime` with the year number changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// + /// See also the [`NaiveDate::with_year`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.with_year(2016), Some(NaiveDate::from_ymd_opt(2016, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// assert_eq!(dt.with_year(-308), Some(NaiveDate::from_ymd_opt(-308, 9, 25).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// ``` + #[inline] + fn with_year(&self, year: i32) -> Option { + self.date.with_year(year).map(|d| NaiveDateTime { date: d, ..*self }) + } + + /// Makes a new `NaiveDateTime` with the month number (starting from 1) changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// + /// See also the [`NaiveDate::with_month`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 30).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.with_month(10), Some(NaiveDate::from_ymd_opt(2015, 10, 30).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// assert_eq!(dt.with_month(13), None); // no month 13 + /// assert_eq!(dt.with_month(2), None); // no February 30 + /// ``` + #[inline] + fn with_month(&self, month: u32) -> Option { + self.date.with_month(month).map(|d| NaiveDateTime { date: d, ..*self }) + } + + /// Makes a new `NaiveDateTime` with the month number (starting from 0) changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// + /// See also the [`NaiveDate::with_month0`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 30).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.with_month0(9), Some(NaiveDate::from_ymd_opt(2015, 10, 30).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// assert_eq!(dt.with_month0(12), None); // no month 13 + /// assert_eq!(dt.with_month0(1), None); // no February 30 + /// ``` + #[inline] + fn with_month0(&self, month0: u32) -> Option { + self.date.with_month0(month0).map(|d| NaiveDateTime { date: d, ..*self }) + } + + /// Makes a new `NaiveDateTime` with the day of month (starting from 1) changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// + /// See also the [`NaiveDate::with_day`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.with_day(30), Some(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// assert_eq!(dt.with_day(31), None); // no September 31 + /// ``` + #[inline] + fn with_day(&self, day: u32) -> Option { + self.date.with_day(day).map(|d| NaiveDateTime { date: d, ..*self }) + } + + /// Makes a new `NaiveDateTime` with the day of month (starting from 0) changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// + /// See also the [`NaiveDate::with_day0`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.with_day0(29), Some(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// assert_eq!(dt.with_day0(30), None); // no September 31 + /// ``` + #[inline] + fn with_day0(&self, day0: u32) -> Option { + self.date.with_day0(day0).map(|d| NaiveDateTime { date: d, ..*self }) + } + + /// Makes a new `NaiveDateTime` with the day of year (starting from 1) changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// + /// See also the [`NaiveDate::with_ordinal`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.with_ordinal(60), + /// Some(NaiveDate::from_ymd_opt(2015, 3, 1).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// assert_eq!(dt.with_ordinal(366), None); // 2015 had only 365 days + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2016, 9, 8).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.with_ordinal(60), + /// Some(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// assert_eq!(dt.with_ordinal(366), + /// Some(NaiveDate::from_ymd_opt(2016, 12, 31).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// ``` + #[inline] + fn with_ordinal(&self, ordinal: u32) -> Option { + self.date.with_ordinal(ordinal).map(|d| NaiveDateTime { date: d, ..*self }) + } + + /// Makes a new `NaiveDateTime` with the day of year (starting from 0) changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// + /// See also the [`NaiveDate::with_ordinal0`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Datelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.with_ordinal0(59), + /// Some(NaiveDate::from_ymd_opt(2015, 3, 1).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// assert_eq!(dt.with_ordinal0(365), None); // 2015 had only 365 days + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2016, 9, 8).unwrap().and_hms_opt(12, 34, 56).unwrap(); + /// assert_eq!(dt.with_ordinal0(59), + /// Some(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// assert_eq!(dt.with_ordinal0(365), + /// Some(NaiveDate::from_ymd_opt(2016, 12, 31).unwrap().and_hms_opt(12, 34, 56).unwrap())); + /// ``` + #[inline] + fn with_ordinal0(&self, ordinal0: u32) -> Option { + self.date.with_ordinal0(ordinal0).map(|d| NaiveDateTime { date: d, ..*self }) + } +} + +impl Timelike for NaiveDateTime { + /// Returns the hour number from 0 to 23. + /// + /// See also the [`NaiveTime::hour`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Timelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// assert_eq!(dt.hour(), 12); + /// ``` + #[inline] + fn hour(&self) -> u32 { + self.time.hour() + } + + /// Returns the minute number from 0 to 59. + /// + /// See also the [`NaiveTime::minute`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Timelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// assert_eq!(dt.minute(), 34); + /// ``` + #[inline] + fn minute(&self) -> u32 { + self.time.minute() + } + + /// Returns the second number from 0 to 59. + /// + /// See also the [`NaiveTime::second`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Timelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// assert_eq!(dt.second(), 56); + /// ``` + #[inline] + fn second(&self) -> u32 { + self.time.second() + } + + /// Returns the number of nanoseconds since the whole non-leap second. + /// The range from 1,000,000,000 to 1,999,999,999 represents + /// the [leap second](./struct.NaiveTime.html#leap-second-handling). + /// + /// See also the [`NaiveTime::nanosecond`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Timelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// assert_eq!(dt.nanosecond(), 789_000_000); + /// ``` + #[inline] + fn nanosecond(&self) -> u32 { + self.time.nanosecond() + } + + /// Makes a new `NaiveDateTime` with the hour number changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// + /// See also the [`NaiveTime::with_hour`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Timelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// assert_eq!(dt.with_hour(7), + /// Some(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(7, 34, 56, 789).unwrap())); + /// assert_eq!(dt.with_hour(24), None); + /// ``` + #[inline] + fn with_hour(&self, hour: u32) -> Option { + self.time.with_hour(hour).map(|t| NaiveDateTime { time: t, ..*self }) + } + + /// Makes a new `NaiveDateTime` with the minute number changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// + /// See also the + /// [`NaiveTime::with_minute`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Timelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// assert_eq!(dt.with_minute(45), + /// Some(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 45, 56, 789).unwrap())); + /// assert_eq!(dt.with_minute(60), None); + /// ``` + #[inline] + fn with_minute(&self, min: u32) -> Option { + self.time.with_minute(min).map(|t| NaiveDateTime { time: t, ..*self }) + } + + /// Makes a new `NaiveDateTime` with the second number changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. As + /// with the [`NaiveDateTime::second`] method, the input range is + /// restricted to 0 through 59. + /// + /// See also the [`NaiveTime::with_second`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Timelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// assert_eq!(dt.with_second(17), + /// Some(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 34, 17, 789).unwrap())); + /// assert_eq!(dt.with_second(60), None); + /// ``` + #[inline] + fn with_second(&self, sec: u32) -> Option { + self.time.with_second(sec).map(|t| NaiveDateTime { time: t, ..*self }) + } + + /// Makes a new `NaiveDateTime` with nanoseconds since the whole non-leap second changed. + /// + /// Returns `None` when the resulting `NaiveDateTime` would be invalid. + /// As with the [`NaiveDateTime::nanosecond`] method, + /// the input range can exceed 1,000,000,000 for leap seconds. + /// + /// See also the [`NaiveTime::with_nanosecond`] method. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, NaiveDateTime, Timelike}; + /// + /// let dt: NaiveDateTime = NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_milli_opt(12, 34, 56, 789).unwrap(); + /// assert_eq!(dt.with_nanosecond(333_333_333), + /// Some(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_nano_opt(12, 34, 56, 333_333_333).unwrap())); + /// assert_eq!(dt.with_nanosecond(1_333_333_333), // leap second + /// Some(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().and_hms_nano_opt(12, 34, 56, 1_333_333_333).unwrap())); + /// assert_eq!(dt.with_nanosecond(2_000_000_000), None); + /// ``` + #[inline] + fn with_nanosecond(&self, nano: u32) -> Option { + self.time.with_nanosecond(nano).map(|t| NaiveDateTime { time: t, ..*self }) + } +} + +/// An addition of `Duration` to `NaiveDateTime` yields another `NaiveDateTime`. +/// +/// As a part of Chrono's [leap second handling](./struct.NaiveTime.html#leap-second-handling), +/// the addition assumes that **there is no leap second ever**, +/// except when the `NaiveDateTime` itself represents a leap second +/// in which case the assumption becomes that **there is exactly a single leap second ever**. +/// +/// Panics on underflow or overflow. Use [`NaiveDateTime::checked_add_signed`] +/// to detect that. +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveDate}; +/// +/// let from_ymd = NaiveDate::from_ymd; +/// +/// let d = from_ymd(2016, 7, 8); +/// let hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap(); +/// assert_eq!(hms(3, 5, 7) + Duration::zero(), hms(3, 5, 7)); +/// assert_eq!(hms(3, 5, 7) + Duration::seconds(1), hms(3, 5, 8)); +/// assert_eq!(hms(3, 5, 7) + Duration::seconds(-1), hms(3, 5, 6)); +/// assert_eq!(hms(3, 5, 7) + Duration::seconds(3600 + 60), hms(4, 6, 7)); +/// assert_eq!(hms(3, 5, 7) + Duration::seconds(86_400), +/// from_ymd(2016, 7, 9).and_hms_opt(3, 5, 7).unwrap()); +/// assert_eq!(hms(3, 5, 7) + Duration::days(365), +/// from_ymd(2017, 7, 8).and_hms_opt(3, 5, 7).unwrap()); +/// +/// let hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap(); +/// assert_eq!(hmsm(3, 5, 7, 980) + Duration::milliseconds(450), hmsm(3, 5, 8, 430)); +/// ``` +/// +/// Leap seconds are handled, +/// but the addition assumes that it is the only leap second happened. +/// +/// ``` +/// # use chrono::{Duration, NaiveDate}; +/// # let from_ymd = NaiveDate::from_ymd; +/// # let hmsm = |h, m, s, milli| from_ymd(2016, 7, 8).and_hms_milli_opt(h, m, s, milli).unwrap(); +/// let leap = hmsm(3, 5, 59, 1_300); +/// assert_eq!(leap + Duration::zero(), hmsm(3, 5, 59, 1_300)); +/// assert_eq!(leap + Duration::milliseconds(-500), hmsm(3, 5, 59, 800)); +/// assert_eq!(leap + Duration::milliseconds(500), hmsm(3, 5, 59, 1_800)); +/// assert_eq!(leap + Duration::milliseconds(800), hmsm(3, 6, 0, 100)); +/// assert_eq!(leap + Duration::seconds(10), hmsm(3, 6, 9, 300)); +/// assert_eq!(leap + Duration::seconds(-10), hmsm(3, 5, 50, 300)); +/// assert_eq!(leap + Duration::days(1), +/// from_ymd(2016, 7, 9).and_hms_milli_opt(3, 5, 59, 300).unwrap()); +/// ``` +impl Add for NaiveDateTime { + type Output = NaiveDateTime; + + #[inline] + fn add(self, rhs: OldDuration) -> NaiveDateTime { + self.checked_add_signed(rhs).expect("`NaiveDateTime + Duration` overflowed") + } +} + +impl AddAssign for NaiveDateTime { + #[inline] + fn add_assign(&mut self, rhs: OldDuration) { + *self = self.add(rhs); + } +} + +impl Add for NaiveDateTime { + type Output = NaiveDateTime; + + /// An addition of months to `NaiveDateTime` clamped to valid days in resulting month. + /// + /// # Panics + /// + /// Panics if the resulting date would be out of range. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveDateTime, Months, NaiveDate}; + /// use std::str::FromStr; + /// + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap().and_hms_opt(1, 0, 0).unwrap() + Months::new(1), + /// NaiveDate::from_ymd_opt(2014, 2, 1).unwrap().and_hms_opt(1, 0, 0).unwrap() + /// ); + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap().and_hms_opt(0, 2, 0).unwrap() + Months::new(11), + /// NaiveDate::from_ymd_opt(2014, 12, 1).unwrap().and_hms_opt(0, 2, 0).unwrap() + /// ); + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap().and_hms_opt(0, 0, 3).unwrap() + Months::new(12), + /// NaiveDate::from_ymd_opt(2015, 1, 1).unwrap().and_hms_opt(0, 0, 3).unwrap() + /// ); + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap().and_hms_opt(0, 0, 4).unwrap() + Months::new(13), + /// NaiveDate::from_ymd_opt(2015, 2, 1).unwrap().and_hms_opt(0, 0, 4).unwrap() + /// ); + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2014, 1, 31).unwrap().and_hms_opt(0, 5, 0).unwrap() + Months::new(1), + /// NaiveDate::from_ymd_opt(2014, 2, 28).unwrap().and_hms_opt(0, 5, 0).unwrap() + /// ); + /// assert_eq!( + /// NaiveDate::from_ymd_opt(2020, 1, 31).unwrap().and_hms_opt(6, 0, 0).unwrap() + Months::new(1), + /// NaiveDate::from_ymd_opt(2020, 2, 29).unwrap().and_hms_opt(6, 0, 0).unwrap() + /// ); + /// ``` + fn add(self, rhs: Months) -> Self::Output { + Self { date: self.date.checked_add_months(rhs).unwrap(), time: self.time } + } +} + +/// A subtraction of `Duration` from `NaiveDateTime` yields another `NaiveDateTime`. +/// It is the same as the addition with a negated `Duration`. +/// +/// As a part of Chrono's [leap second handling](./struct.NaiveTime.html#leap-second-handling), +/// the addition assumes that **there is no leap second ever**, +/// except when the `NaiveDateTime` itself represents a leap second +/// in which case the assumption becomes that **there is exactly a single leap second ever**. +/// +/// Panics on underflow or overflow. Use [`NaiveDateTime::checked_sub_signed`] +/// to detect that. +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveDate}; +/// +/// let from_ymd = NaiveDate::from_ymd; +/// +/// let d = from_ymd(2016, 7, 8); +/// let hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap(); +/// assert_eq!(hms(3, 5, 7) - Duration::zero(), hms(3, 5, 7)); +/// assert_eq!(hms(3, 5, 7) - Duration::seconds(1), hms(3, 5, 6)); +/// assert_eq!(hms(3, 5, 7) - Duration::seconds(-1), hms(3, 5, 8)); +/// assert_eq!(hms(3, 5, 7) - Duration::seconds(3600 + 60), hms(2, 4, 7)); +/// assert_eq!(hms(3, 5, 7) - Duration::seconds(86_400), +/// from_ymd(2016, 7, 7).and_hms_opt(3, 5, 7).unwrap()); +/// assert_eq!(hms(3, 5, 7) - Duration::days(365), +/// from_ymd(2015, 7, 9).and_hms_opt(3, 5, 7).unwrap()); +/// +/// let hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap(); +/// assert_eq!(hmsm(3, 5, 7, 450) - Duration::milliseconds(670), hmsm(3, 5, 6, 780)); +/// ``` +/// +/// Leap seconds are handled, +/// but the subtraction assumes that it is the only leap second happened. +/// +/// ``` +/// # use chrono::{Duration, NaiveDate}; +/// # let from_ymd = NaiveDate::from_ymd; +/// # let hmsm = |h, m, s, milli| from_ymd(2016, 7, 8).and_hms_milli_opt(h, m, s, milli).unwrap(); +/// let leap = hmsm(3, 5, 59, 1_300); +/// assert_eq!(leap - Duration::zero(), hmsm(3, 5, 59, 1_300)); +/// assert_eq!(leap - Duration::milliseconds(200), hmsm(3, 5, 59, 1_100)); +/// assert_eq!(leap - Duration::milliseconds(500), hmsm(3, 5, 59, 800)); +/// assert_eq!(leap - Duration::seconds(60), hmsm(3, 5, 0, 300)); +/// assert_eq!(leap - Duration::days(1), +/// from_ymd(2016, 7, 7).and_hms_milli_opt(3, 6, 0, 300).unwrap()); +/// ``` +impl Sub for NaiveDateTime { + type Output = NaiveDateTime; + + #[inline] + fn sub(self, rhs: OldDuration) -> NaiveDateTime { + self.checked_sub_signed(rhs).expect("`NaiveDateTime - Duration` overflowed") + } +} + +impl SubAssign for NaiveDateTime { + #[inline] + fn sub_assign(&mut self, rhs: OldDuration) { + *self = self.sub(rhs); + } +} + +/// A subtraction of Months from `NaiveDateTime` clamped to valid days in resulting month. +/// +/// # Panics +/// +/// Panics if the resulting date would be out of range. +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveDateTime, Months, NaiveDate}; +/// use std::str::FromStr; +/// +/// assert_eq!( +/// NaiveDate::from_ymd_opt(2014, 01, 01).unwrap().and_hms_opt(01, 00, 00).unwrap() - Months::new(11), +/// NaiveDate::from_ymd_opt(2013, 02, 01).unwrap().and_hms_opt(01, 00, 00).unwrap() +/// ); +/// assert_eq!( +/// NaiveDate::from_ymd_opt(2014, 01, 01).unwrap().and_hms_opt(00, 02, 00).unwrap() - Months::new(12), +/// NaiveDate::from_ymd_opt(2013, 01, 01).unwrap().and_hms_opt(00, 02, 00).unwrap() +/// ); +/// assert_eq!( +/// NaiveDate::from_ymd_opt(2014, 01, 01).unwrap().and_hms_opt(00, 00, 03).unwrap() - Months::new(13), +/// NaiveDate::from_ymd_opt(2012, 12, 01).unwrap().and_hms_opt(00, 00, 03).unwrap() +/// ); +/// ``` +impl Sub for NaiveDateTime { + type Output = NaiveDateTime; + + fn sub(self, rhs: Months) -> Self::Output { + Self { date: self.date.checked_sub_months(rhs).unwrap(), time: self.time } + } +} + +/// Subtracts another `NaiveDateTime` from the current date and time. +/// This does not overflow or underflow at all. +/// +/// As a part of Chrono's [leap second handling](./struct.NaiveTime.html#leap-second-handling), +/// the subtraction assumes that **there is no leap second ever**, +/// except when any of the `NaiveDateTime`s themselves represents a leap second +/// in which case the assumption becomes that +/// **there are exactly one (or two) leap second(s) ever**. +/// +/// The implementation is a wrapper around [`NaiveDateTime::signed_duration_since`]. +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveDate}; +/// +/// let from_ymd = NaiveDate::from_ymd; +/// +/// let d = from_ymd(2016, 7, 8); +/// assert_eq!(d.and_hms_opt(3, 5, 7).unwrap() - d.and_hms_opt(2, 4, 6).unwrap(), Duration::seconds(3600 + 60 + 1)); +/// +/// // July 8 is 190th day in the year 2016 +/// let d0 = from_ymd(2016, 1, 1); +/// assert_eq!(d.and_hms_milli_opt(0, 7, 6, 500).unwrap() - d0.and_hms_opt(0, 0, 0).unwrap(), +/// Duration::seconds(189 * 86_400 + 7 * 60 + 6) + Duration::milliseconds(500)); +/// ``` +/// +/// Leap seconds are handled, but the subtraction assumes that no other leap +/// seconds happened. +/// +/// ``` +/// # use chrono::{Duration, NaiveDate}; +/// # let from_ymd = NaiveDate::from_ymd; +/// let leap = from_ymd(2015, 6, 30).and_hms_milli_opt(23, 59, 59, 1_500).unwrap(); +/// assert_eq!(leap - from_ymd(2015, 6, 30).and_hms_opt(23, 0, 0).unwrap(), +/// Duration::seconds(3600) + Duration::milliseconds(500)); +/// assert_eq!(from_ymd(2015, 7, 1).and_hms_opt(1, 0, 0).unwrap() - leap, +/// Duration::seconds(3600) - Duration::milliseconds(500)); +/// ``` +impl Sub for NaiveDateTime { + type Output = OldDuration; + + #[inline] + fn sub(self, rhs: NaiveDateTime) -> OldDuration { + self.signed_duration_since(rhs) + } +} + +impl Add for NaiveDateTime { + type Output = NaiveDateTime; + + fn add(self, days: Days) -> Self::Output { + self.checked_add_days(days).unwrap() + } +} + +impl Sub for NaiveDateTime { + type Output = NaiveDateTime; + + fn sub(self, days: Days) -> Self::Output { + self.checked_sub_days(days).unwrap() + } +} + +/// The `Debug` output of the naive date and time `dt` is the same as +/// [`dt.format("%Y-%m-%dT%H:%M:%S%.f")`](crate::format::strftime). +/// +/// The string printed can be readily parsed via the `parse` method on `str`. +/// +/// It should be noted that, for leap seconds not on the minute boundary, +/// it may print a representation not distinguishable from non-leap seconds. +/// This doesn't matter in practice, since such leap seconds never happened. +/// (By the time of the first leap second on 1972-06-30, +/// every time zone offset around the world has standardized to the 5-minute alignment.) +/// +/// # Example +/// +/// ``` +/// use chrono::NaiveDate; +/// +/// let dt = NaiveDate::from_ymd_opt(2016, 11, 15).unwrap().and_hms_opt(7, 39, 24).unwrap(); +/// assert_eq!(format!("{:?}", dt), "2016-11-15T07:39:24"); +/// ``` +/// +/// Leap seconds may also be used. +/// +/// ``` +/// # use chrono::NaiveDate; +/// let dt = NaiveDate::from_ymd_opt(2015, 6, 30).unwrap().and_hms_milli_opt(23, 59, 59, 1_500).unwrap(); +/// assert_eq!(format!("{:?}", dt), "2015-06-30T23:59:60.500"); +/// ``` +impl fmt::Debug for NaiveDateTime { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.date.fmt(f)?; + f.write_char('T')?; + self.time.fmt(f) + } +} + +/// The `Display` output of the naive date and time `dt` is the same as +/// [`dt.format("%Y-%m-%d %H:%M:%S%.f")`](crate::format::strftime). +/// +/// It should be noted that, for leap seconds not on the minute boundary, +/// it may print a representation not distinguishable from non-leap seconds. +/// This doesn't matter in practice, since such leap seconds never happened. +/// (By the time of the first leap second on 1972-06-30, +/// every time zone offset around the world has standardized to the 5-minute alignment.) +/// +/// # Example +/// +/// ``` +/// use chrono::NaiveDate; +/// +/// let dt = NaiveDate::from_ymd_opt(2016, 11, 15).unwrap().and_hms_opt(7, 39, 24).unwrap(); +/// assert_eq!(format!("{}", dt), "2016-11-15 07:39:24"); +/// ``` +/// +/// Leap seconds may also be used. +/// +/// ``` +/// # use chrono::NaiveDate; +/// let dt = NaiveDate::from_ymd_opt(2015, 6, 30).unwrap().and_hms_milli_opt(23, 59, 59, 1_500).unwrap(); +/// assert_eq!(format!("{}", dt), "2015-06-30 23:59:60.500"); +/// ``` +impl fmt::Display for NaiveDateTime { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.date.fmt(f)?; + f.write_char(' ')?; + self.time.fmt(f) + } +} + +/// Parsing a `str` into a `NaiveDateTime` uses the same format, +/// [`%Y-%m-%dT%H:%M:%S%.f`](crate::format::strftime), as in `Debug`. +/// +/// # Example +/// +/// ``` +/// use chrono::{NaiveDateTime, NaiveDate}; +/// +/// let dt = NaiveDate::from_ymd_opt(2015, 9, 18).unwrap().and_hms_opt(23, 56, 4).unwrap(); +/// assert_eq!("2015-09-18T23:56:04".parse::(), Ok(dt)); +/// +/// let dt = NaiveDate::from_ymd_opt(12345, 6, 7).unwrap().and_hms_milli_opt(7, 59, 59, 1_500).unwrap(); // leap second +/// assert_eq!("+12345-6-7T7:59:60.5".parse::(), Ok(dt)); +/// +/// assert!("foo".parse::().is_err()); +/// ``` +impl str::FromStr for NaiveDateTime { + type Err = ParseError; + + fn from_str(s: &str) -> ParseResult { + const ITEMS: &[Item<'static>] = &[ + Item::Numeric(Numeric::Year, Pad::Zero), + Item::Space(""), + Item::Literal("-"), + Item::Numeric(Numeric::Month, Pad::Zero), + Item::Space(""), + Item::Literal("-"), + Item::Numeric(Numeric::Day, Pad::Zero), + Item::Space(""), + Item::Literal("T"), // XXX shouldn't this be case-insensitive? + Item::Numeric(Numeric::Hour, Pad::Zero), + Item::Space(""), + Item::Literal(":"), + Item::Numeric(Numeric::Minute, Pad::Zero), + Item::Space(""), + Item::Literal(":"), + Item::Numeric(Numeric::Second, Pad::Zero), + Item::Fixed(Fixed::Nanosecond), + Item::Space(""), + ]; + + let mut parsed = Parsed::new(); + parse(&mut parsed, s, ITEMS.iter())?; + parsed.to_naive_datetime_with_offset(0) + } +} + +/// The default value for a NaiveDateTime is one with epoch 0 +/// that is, 1st of January 1970 at 00:00:00. +/// +/// # Example +/// +/// ```rust +/// use chrono::NaiveDateTime; +/// +/// let default_date = NaiveDateTime::default(); +/// assert_eq!(default_date, NaiveDateTime::from_timestamp(0, 0)); +/// ``` +impl Default for NaiveDateTime { + fn default() -> Self { + NaiveDateTime::from_timestamp_opt(0, 0).unwrap() + } +} + +#[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))] +fn test_encodable_json(to_string: F) +where + F: Fn(&NaiveDateTime) -> Result, + E: ::std::fmt::Debug, +{ + assert_eq!( + to_string( + &NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_milli_opt(9, 10, 48, 90).unwrap() + ) + .ok(), + Some(r#""2016-07-08T09:10:48.090""#.into()) + ); + assert_eq!( + to_string(&NaiveDate::from_ymd_opt(2014, 7, 24).unwrap().and_hms_opt(12, 34, 6).unwrap()) + .ok(), + Some(r#""2014-07-24T12:34:06""#.into()) + ); + assert_eq!( + to_string( + &NaiveDate::from_ymd_opt(0, 1, 1).unwrap().and_hms_milli_opt(0, 0, 59, 1_000).unwrap() + ) + .ok(), + Some(r#""0000-01-01T00:00:60""#.into()) + ); + assert_eq!( + to_string( + &NaiveDate::from_ymd_opt(-1, 12, 31).unwrap().and_hms_nano_opt(23, 59, 59, 7).unwrap() + ) + .ok(), + Some(r#""-0001-12-31T23:59:59.000000007""#.into()) + ); + assert_eq!( + to_string(&NaiveDate::MIN.and_hms_opt(0, 0, 0).unwrap()).ok(), + Some(r#""-262144-01-01T00:00:00""#.into()) + ); + assert_eq!( + to_string(&NaiveDate::MAX.and_hms_nano_opt(23, 59, 59, 1_999_999_999).unwrap()).ok(), + Some(r#""+262143-12-31T23:59:60.999999999""#.into()) + ); +} + +#[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))] +fn test_decodable_json(from_str: F) +where + F: Fn(&str) -> Result, + E: ::std::fmt::Debug, +{ + assert_eq!( + from_str(r#""2016-07-08T09:10:48.090""#).ok(), + Some( + NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_milli_opt(9, 10, 48, 90).unwrap() + ) + ); + assert_eq!( + from_str(r#""2016-7-8T9:10:48.09""#).ok(), + Some( + NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_milli_opt(9, 10, 48, 90).unwrap() + ) + ); + assert_eq!( + from_str(r#""2014-07-24T12:34:06""#).ok(), + Some(NaiveDate::from_ymd_opt(2014, 7, 24).unwrap().and_hms_opt(12, 34, 6).unwrap()) + ); + assert_eq!( + from_str(r#""0000-01-01T00:00:60""#).ok(), + Some(NaiveDate::from_ymd_opt(0, 1, 1).unwrap().and_hms_milli_opt(0, 0, 59, 1_000).unwrap()) + ); + assert_eq!( + from_str(r#""0-1-1T0:0:60""#).ok(), + Some(NaiveDate::from_ymd_opt(0, 1, 1).unwrap().and_hms_milli_opt(0, 0, 59, 1_000).unwrap()) + ); + assert_eq!( + from_str(r#""-0001-12-31T23:59:59.000000007""#).ok(), + Some(NaiveDate::from_ymd_opt(-1, 12, 31).unwrap().and_hms_nano_opt(23, 59, 59, 7).unwrap()) + ); + assert_eq!( + from_str(r#""-262144-01-01T00:00:00""#).ok(), + Some(NaiveDate::MIN.and_hms_opt(0, 0, 0).unwrap()) + ); + assert_eq!( + from_str(r#""+262143-12-31T23:59:60.999999999""#).ok(), + Some(NaiveDate::MAX.and_hms_nano_opt(23, 59, 59, 1_999_999_999).unwrap()) + ); + assert_eq!( + from_str(r#""+262143-12-31T23:59:60.9999999999997""#).ok(), // excess digits are ignored + Some(NaiveDate::MAX.and_hms_nano_opt(23, 59, 59, 1_999_999_999).unwrap()) + ); + + // bad formats + assert!(from_str(r#""""#).is_err()); + assert!(from_str(r#""2016-07-08""#).is_err()); + assert!(from_str(r#""09:10:48.090""#).is_err()); + assert!(from_str(r#""20160708T091048.090""#).is_err()); + assert!(from_str(r#""2000-00-00T00:00:00""#).is_err()); + assert!(from_str(r#""2000-02-30T00:00:00""#).is_err()); + assert!(from_str(r#""2001-02-29T00:00:00""#).is_err()); + assert!(from_str(r#""2002-02-28T24:00:00""#).is_err()); + assert!(from_str(r#""2002-02-28T23:60:00""#).is_err()); + assert!(from_str(r#""2002-02-28T23:59:61""#).is_err()); + assert!(from_str(r#""2016-07-08T09:10:48,090""#).is_err()); + assert!(from_str(r#""2016-07-08 09:10:48.090""#).is_err()); + assert!(from_str(r#""2016-007-08T09:10:48.090""#).is_err()); + assert!(from_str(r#""yyyy-mm-ddThh:mm:ss.fffffffff""#).is_err()); + assert!(from_str(r#"20160708000000"#).is_err()); + assert!(from_str(r#"{}"#).is_err()); + // pre-0.3.0 rustc-serialize format is now invalid + assert!(from_str(r#"{"date":{"ymdf":20},"time":{"secs":0,"frac":0}}"#).is_err()); + assert!(from_str(r#"null"#).is_err()); +} + +#[cfg(all(test, feature = "rustc-serialize"))] +fn test_decodable_json_timestamp(from_str: F) +where + F: Fn(&str) -> Result, + E: ::std::fmt::Debug, +{ + assert_eq!( + *from_str("0").unwrap(), + NaiveDate::from_ymd_opt(1970, 1, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(), + "should parse integers as timestamps" + ); + assert_eq!( + *from_str("-1").unwrap(), + NaiveDate::from_ymd_opt(1969, 12, 31).unwrap().and_hms_opt(23, 59, 59).unwrap(), + "should parse integers as timestamps" + ); +} diff --git a/javascript-engine/external/chrono/src/naive/datetime/rustc_serialize.rs b/javascript-engine/external/chrono/src/naive/datetime/rustc_serialize.rs new file mode 100644 index 0000000..6e33829 --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/datetime/rustc_serialize.rs @@ -0,0 +1,73 @@ +#![cfg_attr(docsrs, doc(cfg(feature = "rustc-serialize")))] + +use super::NaiveDateTime; +use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; +use std::ops::Deref; + +impl Encodable for NaiveDateTime { + fn encode(&self, s: &mut S) -> Result<(), S::Error> { + format!("{:?}", self).encode(s) + } +} + +impl Decodable for NaiveDateTime { + fn decode(d: &mut D) -> Result { + d.read_str()?.parse().map_err(|_| d.error("invalid date time string")) + } +} + +/// A `DateTime` that can be deserialized from a seconds-based timestamp +#[derive(Debug)] +#[deprecated( + since = "1.4.2", + note = "RustcSerialize will be removed before chrono 1.0, use Serde instead" +)] +pub struct TsSeconds(NaiveDateTime); + +#[allow(deprecated)] +impl From for NaiveDateTime { + /// Pull the internal NaiveDateTime out + #[allow(deprecated)] + fn from(obj: TsSeconds) -> NaiveDateTime { + obj.0 + } +} + +#[allow(deprecated)] +impl Deref for TsSeconds { + type Target = NaiveDateTime; + + #[allow(deprecated)] + fn deref(&self) -> &Self::Target { + &self.0 + } +} + +#[allow(deprecated)] +impl Decodable for TsSeconds { + #[allow(deprecated)] + fn decode(d: &mut D) -> Result { + Ok(TsSeconds( + NaiveDateTime::from_timestamp_opt(d.read_i64()?, 0) + .ok_or_else(|| d.error("invalid timestamp"))?, + )) + } +} + +#[cfg(test)] +use rustc_serialize::json; + +#[test] +fn test_encodable() { + super::test_encodable_json(json::encode); +} + +#[test] +fn test_decodable() { + super::test_decodable_json(json::decode); +} + +#[test] +fn test_decodable_timestamps() { + super::test_decodable_json_timestamp(json::decode); +} diff --git a/javascript-engine/external/chrono/src/naive/datetime/serde.rs b/javascript-engine/external/chrono/src/naive/datetime/serde.rs new file mode 100644 index 0000000..40695fa --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/datetime/serde.rs @@ -0,0 +1,1133 @@ +#![cfg_attr(docsrs, doc(cfg(feature = "serde")))] + +use core::fmt; +use serde::{de, ser}; + +use super::NaiveDateTime; +use crate::offset::LocalResult; + +/// Serialize a `NaiveDateTime` as an RFC 3339 string +/// +/// See [the `serde` module](./serde/index.html) for alternate +/// serialization formats. +impl ser::Serialize for NaiveDateTime { + fn serialize(&self, serializer: S) -> Result + where + S: ser::Serializer, + { + struct FormatWrapped<'a, D: 'a> { + inner: &'a D, + } + + impl<'a, D: fmt::Debug> fmt::Display for FormatWrapped<'a, D> { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.inner.fmt(f) + } + } + + serializer.collect_str(&FormatWrapped { inner: &self }) + } +} + +struct NaiveDateTimeVisitor; + +impl<'de> de::Visitor<'de> for NaiveDateTimeVisitor { + type Value = NaiveDateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a formatted date and time string") + } + + fn visit_str(self, value: &str) -> Result + where + E: de::Error, + { + value.parse().map_err(E::custom) + } +} + +impl<'de> de::Deserialize<'de> for NaiveDateTime { + fn deserialize(deserializer: D) -> Result + where + D: de::Deserializer<'de>, + { + deserializer.deserialize_str(NaiveDateTimeVisitor) + } +} + +/// Used to serialize/deserialize from nanosecond-precision timestamps +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{NaiveDate, NaiveDateTime}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::naive::serde::ts_nanoseconds; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_nanoseconds")] +/// time: NaiveDateTime +/// } +/// +/// let time = NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_nano_opt(02, 04, 59, 918355733).unwrap(); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918355733}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_nanoseconds { + use core::fmt; + use serde::{de, ser}; + + use super::ne_timestamp; + use crate::NaiveDateTime; + + /// Serialize a datetime into an integer number of nanoseconds since the epoch + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Serialize; + /// use chrono::naive::serde::ts_nanoseconds::serialize as to_nano_ts; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_nano_ts")] + /// time: NaiveDateTime + /// } + /// + /// let my_s = S { + /// time: NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_nano_opt(02, 04, 59, 918355733).unwrap(), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918355733}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(dt: &NaiveDateTime, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.serialize_i64(dt.timestamp_nanos()) + } + + /// Deserialize a `NaiveDateTime` from a nanoseconds timestamp + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::NaiveDateTime; + /// # use serde_derive::Deserialize; + /// use chrono::naive::serde::ts_nanoseconds::deserialize as from_nano_ts; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_nano_ts")] + /// time: NaiveDateTime + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918355733 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(NanoSecondsTimestampVisitor) + } + + pub(super) struct NanoSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for NanoSecondsTimestampVisitor { + type Value = NaiveDateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp") + } + + fn visit_i64(self, value: i64) -> Result + where + E: de::Error, + { + NaiveDateTime::from_timestamp_opt(value / 1_000_000_000, (value % 1_000_000_000) as u32) + .ok_or_else(|| E::custom(ne_timestamp(value))) + } + + fn visit_u64(self, value: u64) -> Result + where + E: de::Error, + { + NaiveDateTime::from_timestamp_opt( + value as i64 / 1_000_000_000, + (value as i64 % 1_000_000_000) as u32, + ) + .ok_or_else(|| E::custom(ne_timestamp(value))) + } + } +} + +/// Ser/de to/from optional timestamps in nanoseconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::naive::{NaiveDate, NaiveDateTime}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::naive::serde::ts_nanoseconds_option; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_nanoseconds_option")] +/// time: Option +/// } +/// +/// let time = Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_nano_opt(02, 04, 59, 918355733).unwrap()); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918355733}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_nanoseconds_option { + use core::fmt; + use serde::{de, ser}; + + use super::ts_nanoseconds::NanoSecondsTimestampVisitor; + use crate::NaiveDateTime; + + /// Serialize a datetime into an integer number of nanoseconds since the epoch or none + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::naive::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Serialize; + /// use chrono::naive::serde::ts_nanoseconds_option::serialize as to_nano_tsopt; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_nano_tsopt")] + /// time: Option + /// } + /// + /// let my_s = S { + /// time: Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_nano_opt(02, 04, 59, 918355733).unwrap()), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918355733}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(opt: &Option, serializer: S) -> Result + where + S: ser::Serializer, + { + match *opt { + Some(ref dt) => serializer.serialize_some(&dt.timestamp_nanos()), + None => serializer.serialize_none(), + } + } + + /// Deserialize a `NaiveDateTime` from a nanosecond timestamp or none + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::naive::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Deserialize; + /// use chrono::naive::serde::ts_nanoseconds_option::deserialize as from_nano_tsopt; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_nano_tsopt")] + /// time: Option + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918355733 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_option(OptionNanoSecondsTimestampVisitor) + } + + struct OptionNanoSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for OptionNanoSecondsTimestampVisitor { + type Value = Option; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in nanoseconds or none") + } + + /// Deserialize a timestamp in nanoseconds since the epoch + fn visit_some(self, d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(NanoSecondsTimestampVisitor).map(Some) + } + + /// Deserialize a timestamp in nanoseconds since the epoch + fn visit_none(self) -> Result + where + E: de::Error, + { + Ok(None) + } + + /// Deserialize a timestamp in nanoseconds since the epoch + fn visit_unit(self) -> Result + where + E: de::Error, + { + Ok(None) + } + } +} + +/// Used to serialize/deserialize from microsecond-precision timestamps +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{NaiveDate, NaiveDateTime}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::naive::serde::ts_microseconds; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_microseconds")] +/// time: NaiveDateTime +/// } +/// +/// let time = NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_micro_opt(02, 04, 59, 918355).unwrap(); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918355}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_microseconds { + use core::fmt; + use serde::{de, ser}; + + use super::ne_timestamp; + use crate::NaiveDateTime; + + /// Serialize a datetime into an integer number of microseconds since the epoch + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Serialize; + /// use chrono::naive::serde::ts_microseconds::serialize as to_micro_ts; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_micro_ts")] + /// time: NaiveDateTime + /// } + /// + /// let my_s = S { + /// time: NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_micro_opt(02, 04, 59, 918355).unwrap(), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918355}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(dt: &NaiveDateTime, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.serialize_i64(dt.timestamp_micros()) + } + + /// Deserialize a `NaiveDateTime` from a microseconds timestamp + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::NaiveDateTime; + /// # use serde_derive::Deserialize; + /// use chrono::naive::serde::ts_microseconds::deserialize as from_micro_ts; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_micro_ts")] + /// time: NaiveDateTime + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918355 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(MicroSecondsTimestampVisitor) + } + + pub(super) struct MicroSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for MicroSecondsTimestampVisitor { + type Value = NaiveDateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp") + } + + fn visit_i64(self, value: i64) -> Result + where + E: de::Error, + { + NaiveDateTime::from_timestamp_opt( + value / 1_000_000, + ((value % 1_000_000) * 1000) as u32, + ) + .ok_or_else(|| E::custom(ne_timestamp(value))) + } + + fn visit_u64(self, value: u64) -> Result + where + E: de::Error, + { + NaiveDateTime::from_timestamp_opt( + (value / 1_000_000) as i64, + ((value % 1_000_000) * 1_000) as u32, + ) + .ok_or_else(|| E::custom(ne_timestamp(value))) + } + } +} + +/// Ser/de to/from optional timestamps in microseconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::naive::{NaiveDate, NaiveDateTime}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::naive::serde::ts_microseconds_option; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_microseconds_option")] +/// time: Option +/// } +/// +/// let time = Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_micro_opt(02, 04, 59, 918355).unwrap()); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918355}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_microseconds_option { + use core::fmt; + use serde::{de, ser}; + + use super::ts_microseconds::MicroSecondsTimestampVisitor; + use crate::NaiveDateTime; + + /// Serialize a datetime into an integer number of microseconds since the epoch or none + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::naive::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Serialize; + /// use chrono::naive::serde::ts_microseconds_option::serialize as to_micro_tsopt; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_micro_tsopt")] + /// time: Option + /// } + /// + /// let my_s = S { + /// time: Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_micro_opt(02, 04, 59, 918355).unwrap()), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918355}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(opt: &Option, serializer: S) -> Result + where + S: ser::Serializer, + { + match *opt { + Some(ref dt) => serializer.serialize_some(&dt.timestamp_micros()), + None => serializer.serialize_none(), + } + } + + /// Deserialize a `NaiveDateTime` from a nanosecond timestamp or none + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::naive::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Deserialize; + /// use chrono::naive::serde::ts_microseconds_option::deserialize as from_micro_tsopt; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_micro_tsopt")] + /// time: Option + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918355 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_option(OptionMicroSecondsTimestampVisitor) + } + + struct OptionMicroSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for OptionMicroSecondsTimestampVisitor { + type Value = Option; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in microseconds or none") + } + + /// Deserialize a timestamp in microseconds since the epoch + fn visit_some(self, d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(MicroSecondsTimestampVisitor).map(Some) + } + + /// Deserialize a timestamp in microseconds since the epoch + fn visit_none(self) -> Result + where + E: de::Error, + { + Ok(None) + } + + /// Deserialize a timestamp in microseconds since the epoch + fn visit_unit(self) -> Result + where + E: de::Error, + { + Ok(None) + } + } +} + +/// Used to serialize/deserialize from millisecond-precision timestamps +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{NaiveDate, NaiveDateTime}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::naive::serde::ts_milliseconds; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_milliseconds")] +/// time: NaiveDateTime +/// } +/// +/// let time = NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_milli_opt(02, 04, 59, 918).unwrap(); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_milliseconds { + use core::fmt; + use serde::{de, ser}; + + use super::ne_timestamp; + use crate::NaiveDateTime; + + /// Serialize a datetime into an integer number of milliseconds since the epoch + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Serialize; + /// use chrono::naive::serde::ts_milliseconds::serialize as to_milli_ts; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_milli_ts")] + /// time: NaiveDateTime + /// } + /// + /// let my_s = S { + /// time: NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_milli_opt(02, 04, 59, 918).unwrap(), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(dt: &NaiveDateTime, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.serialize_i64(dt.timestamp_millis()) + } + + /// Deserialize a `NaiveDateTime` from a milliseconds timestamp + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::NaiveDateTime; + /// # use serde_derive::Deserialize; + /// use chrono::naive::serde::ts_milliseconds::deserialize as from_milli_ts; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_milli_ts")] + /// time: NaiveDateTime + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(MilliSecondsTimestampVisitor) + } + + pub(super) struct MilliSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for MilliSecondsTimestampVisitor { + type Value = NaiveDateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp") + } + + fn visit_i64(self, value: i64) -> Result + where + E: de::Error, + { + NaiveDateTime::from_timestamp_opt(value / 1000, ((value % 1000) * 1_000_000) as u32) + .ok_or_else(|| E::custom(ne_timestamp(value))) + } + + fn visit_u64(self, value: u64) -> Result + where + E: de::Error, + { + NaiveDateTime::from_timestamp_opt( + (value / 1000) as i64, + ((value % 1000) * 1_000_000) as u32, + ) + .ok_or_else(|| E::custom(ne_timestamp(value))) + } + } +} + +/// Ser/de to/from optional timestamps in milliseconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::naive::{NaiveDate, NaiveDateTime}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::naive::serde::ts_milliseconds_option; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_milliseconds_option")] +/// time: Option +/// } +/// +/// let time = Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_milli_opt(02, 04, 59, 918).unwrap()); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699918}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_milliseconds_option { + use core::fmt; + use serde::{de, ser}; + + use super::ts_milliseconds::MilliSecondsTimestampVisitor; + use crate::NaiveDateTime; + + /// Serialize a datetime into an integer number of milliseconds since the epoch or none + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::naive::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Serialize; + /// use chrono::naive::serde::ts_milliseconds_option::serialize as to_milli_tsopt; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_milli_tsopt")] + /// time: Option + /// } + /// + /// let my_s = S { + /// time: Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_milli_opt(02, 04, 59, 918).unwrap()), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699918}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(opt: &Option, serializer: S) -> Result + where + S: ser::Serializer, + { + match *opt { + Some(ref dt) => serializer.serialize_some(&dt.timestamp_millis()), + None => serializer.serialize_none(), + } + } + + /// Deserialize a `NaiveDateTime` from a nanosecond timestamp or none + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::naive::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Deserialize; + /// use chrono::naive::serde::ts_milliseconds_option::deserialize as from_milli_tsopt; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_milli_tsopt")] + /// time: Option + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1526522699918355 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_option(OptionMilliSecondsTimestampVisitor) + } + + struct OptionMilliSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for OptionMilliSecondsTimestampVisitor { + type Value = Option; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in milliseconds or none") + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_some(self, d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(MilliSecondsTimestampVisitor).map(Some) + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_none(self) -> Result + where + E: de::Error, + { + Ok(None) + } + + /// Deserialize a timestamp in milliseconds since the epoch + fn visit_unit(self) -> Result + where + E: de::Error, + { + Ok(None) + } + } +} + +/// Used to serialize/deserialize from second-precision timestamps +/// +/// # Example: +/// +/// ```rust +/// # use chrono::{NaiveDate, NaiveDateTime}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::naive::serde::ts_seconds; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_seconds")] +/// time: NaiveDateTime +/// } +/// +/// let time = NaiveDate::from_ymd_opt(2015, 5, 15).unwrap().and_hms_opt(10, 0, 0).unwrap(); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1431684000}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_seconds { + use core::fmt; + use serde::{de, ser}; + + use super::ne_timestamp; + use crate::NaiveDateTime; + + /// Serialize a datetime into an integer number of seconds since the epoch + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Serialize; + /// use chrono::naive::serde::ts_seconds::serialize as to_ts; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_ts")] + /// time: NaiveDateTime + /// } + /// + /// let my_s = S { + /// time: NaiveDate::from_ymd_opt(2015, 5, 15).unwrap().and_hms_opt(10, 0, 0).unwrap(), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1431684000}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(dt: &NaiveDateTime, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.serialize_i64(dt.timestamp()) + } + + /// Deserialize a `NaiveDateTime` from a seconds timestamp + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::NaiveDateTime; + /// # use serde_derive::Deserialize; + /// use chrono::naive::serde::ts_seconds::deserialize as from_ts; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_ts")] + /// time: NaiveDateTime + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1431684000 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(SecondsTimestampVisitor) + } + + pub(super) struct SecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for SecondsTimestampVisitor { + type Value = NaiveDateTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp") + } + + fn visit_i64(self, value: i64) -> Result + where + E: de::Error, + { + NaiveDateTime::from_timestamp_opt(value, 0) + .ok_or_else(|| E::custom(ne_timestamp(value))) + } + + fn visit_u64(self, value: u64) -> Result + where + E: de::Error, + { + NaiveDateTime::from_timestamp_opt(value as i64, 0) + .ok_or_else(|| E::custom(ne_timestamp(value))) + } + } +} + +/// Ser/de to/from optional timestamps in seconds +/// +/// Intended for use with `serde`'s `with` attribute. +/// +/// # Example: +/// +/// ```rust +/// # use chrono::naive::{NaiveDate, NaiveDateTime}; +/// # use serde_derive::{Deserialize, Serialize}; +/// use chrono::naive::serde::ts_seconds_option; +/// #[derive(Deserialize, Serialize)] +/// struct S { +/// #[serde(with = "ts_seconds_option")] +/// time: Option +/// } +/// +/// let time = Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_opt(02, 04, 59).unwrap()); +/// let my_s = S { +/// time: time.clone(), +/// }; +/// +/// let as_string = serde_json::to_string(&my_s)?; +/// assert_eq!(as_string, r#"{"time":1526522699}"#); +/// let my_s: S = serde_json::from_str(&as_string)?; +/// assert_eq!(my_s.time, time); +/// # Ok::<(), serde_json::Error>(()) +/// ``` +pub mod ts_seconds_option { + use core::fmt; + use serde::{de, ser}; + + use super::ts_seconds::SecondsTimestampVisitor; + use crate::NaiveDateTime; + + /// Serialize a datetime into an integer number of seconds since the epoch or none + /// + /// Intended for use with `serde`s `serialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::naive::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Serialize; + /// use chrono::naive::serde::ts_seconds_option::serialize as to_tsopt; + /// #[derive(Serialize)] + /// struct S { + /// #[serde(serialize_with = "to_tsopt")] + /// time: Option + /// } + /// + /// let my_s = S { + /// time: Some(NaiveDate::from_ymd_opt(2018, 5, 17).unwrap().and_hms_opt(02, 04, 59).unwrap()), + /// }; + /// let as_string = serde_json::to_string(&my_s)?; + /// assert_eq!(as_string, r#"{"time":1526522699}"#); + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn serialize(opt: &Option, serializer: S) -> Result + where + S: ser::Serializer, + { + match *opt { + Some(ref dt) => serializer.serialize_some(&dt.timestamp()), + None => serializer.serialize_none(), + } + } + + /// Deserialize a `NaiveDateTime` from a second timestamp or none + /// + /// Intended for use with `serde`s `deserialize_with` attribute. + /// + /// # Example: + /// + /// ```rust + /// # use chrono::naive::{NaiveDate, NaiveDateTime}; + /// # use serde_derive::Deserialize; + /// use chrono::naive::serde::ts_seconds_option::deserialize as from_tsopt; + /// #[derive(Deserialize)] + /// struct S { + /// #[serde(deserialize_with = "from_tsopt")] + /// time: Option + /// } + /// + /// let my_s: S = serde_json::from_str(r#"{ "time": 1431684000 }"#)?; + /// # Ok::<(), serde_json::Error>(()) + /// ``` + pub fn deserialize<'de, D>(d: D) -> Result, D::Error> + where + D: de::Deserializer<'de>, + { + d.deserialize_option(OptionSecondsTimestampVisitor) + } + + struct OptionSecondsTimestampVisitor; + + impl<'de> de::Visitor<'de> for OptionSecondsTimestampVisitor { + type Value = Option; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a unix timestamp in seconds or none") + } + + /// Deserialize a timestamp in seconds since the epoch + fn visit_some(self, d: D) -> Result + where + D: de::Deserializer<'de>, + { + d.deserialize_i64(SecondsTimestampVisitor).map(Some) + } + + /// Deserialize a timestamp in seconds since the epoch + fn visit_none(self) -> Result + where + E: de::Error, + { + Ok(None) + } + + /// Deserialize a timestamp in seconds since the epoch + fn visit_unit(self) -> Result + where + E: de::Error, + { + Ok(None) + } + } +} + +#[test] +fn test_serde_serialize() { + super::test_encodable_json(serde_json::to_string); +} + +#[test] +fn test_serde_deserialize() { + super::test_decodable_json(|input| serde_json::from_str(input)); +} + +// Bincode is relevant to test separately from JSON because +// it is not self-describing. +#[test] +fn test_serde_bincode() { + use crate::NaiveDate; + use bincode::{deserialize, serialize}; + + let dt = NaiveDate::from_ymd_opt(2016, 7, 8).unwrap().and_hms_milli_opt(9, 10, 48, 90).unwrap(); + let encoded = serialize(&dt).unwrap(); + let decoded: NaiveDateTime = deserialize(&encoded).unwrap(); + assert_eq!(dt, decoded); +} + +#[test] +fn test_serde_bincode_optional() { + use crate::prelude::*; + use crate::serde::ts_nanoseconds_option; + use bincode::{deserialize, serialize}; + use serde_derive::{Deserialize, Serialize}; + + #[derive(Debug, PartialEq, Eq, Serialize, Deserialize)] + struct Test { + one: Option, + #[serde(with = "ts_nanoseconds_option")] + two: Option>, + } + + let expected = + Test { one: Some(1), two: Some(Utc.with_ymd_and_hms(1970, 1, 1, 0, 1, 1).unwrap()) }; + let bytes: Vec = serialize(&expected).unwrap(); + let actual = deserialize::(&(bytes)).unwrap(); + + assert_eq!(expected, actual); +} + +// lik? function to convert a LocalResult into a serde-ish Result +pub(crate) fn serde_from(me: LocalResult, ts: &V) -> Result +where + E: de::Error, + V: fmt::Display, + T: fmt::Display, +{ + match me { + LocalResult::None => Err(E::custom(ne_timestamp(ts))), + LocalResult::Ambiguous(min, max) => { + Err(E::custom(SerdeError::Ambiguous { timestamp: ts, min, max })) + } + LocalResult::Single(val) => Ok(val), + } +} + +enum SerdeError { + NonExistent { timestamp: V }, + Ambiguous { timestamp: V, min: D, max: D }, +} + +/// Construct a [`SerdeError::NonExistent`] +fn ne_timestamp(ts: T) -> SerdeError { + SerdeError::NonExistent:: { timestamp: ts } +} + +impl fmt::Debug for SerdeError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "ChronoSerdeError({})", self) + } +} + +// impl core::error::Error for SerdeError {} +impl fmt::Display for SerdeError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match self { + SerdeError::NonExistent { timestamp } => { + write!(f, "value is not a legal timestamp: {}", timestamp) + } + SerdeError::Ambiguous { timestamp, min, max } => write!( + f, + "value is an ambiguous timestamp: {}, could be either of {}, {}", + timestamp, min, max + ), + } + } +} diff --git a/javascript-engine/external/chrono/src/naive/datetime/tests.rs b/javascript-engine/external/chrono/src/naive/datetime/tests.rs new file mode 100644 index 0000000..202bdb3 --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/datetime/tests.rs @@ -0,0 +1,343 @@ +use super::NaiveDateTime; +use crate::oldtime::Duration; +use crate::NaiveDate; +use crate::{Datelike, FixedOffset, Utc}; +use std::i64; + +#[test] +fn test_datetime_from_timestamp_millis() { + let valid_map = [ + (1662921288000, "2022-09-11 18:34:48.000000000"), + (1662921288123, "2022-09-11 18:34:48.123000000"), + (1662921287890, "2022-09-11 18:34:47.890000000"), + (-2208936075000, "1900-01-01 14:38:45.000000000"), + (0, "1970-01-01 00:00:00.000000000"), + (119731017000, "1973-10-17 18:36:57.000000000"), + (1234567890000, "2009-02-13 23:31:30.000000000"), + (2034061609000, "2034-06-16 09:06:49.000000000"), + ]; + + for (timestamp_millis, formatted) in valid_map.iter().copied() { + let naive_datetime = NaiveDateTime::from_timestamp_millis(timestamp_millis); + assert_eq!(timestamp_millis, naive_datetime.unwrap().timestamp_millis()); + assert_eq!(naive_datetime.unwrap().format("%F %T%.9f").to_string(), formatted); + } + + let invalid = [i64::MAX, i64::MIN]; + + for timestamp_millis in invalid.iter().copied() { + let naive_datetime = NaiveDateTime::from_timestamp_millis(timestamp_millis); + assert!(naive_datetime.is_none()); + } + + // Test that the result of `from_timestamp_millis` compares equal to + // that of `from_timestamp_opt`. + let secs_test = [0, 1, 2, 1000, 1234, 12345678, -1, -2, -1000, -12345678]; + for secs in secs_test.iter().cloned() { + assert_eq!( + NaiveDateTime::from_timestamp_millis(secs * 1000), + NaiveDateTime::from_timestamp_opt(secs, 0) + ); + } +} + +#[test] +fn test_datetime_from_timestamp_micros() { + let valid_map = [ + (1662921288000000, "2022-09-11 18:34:48.000000000"), + (1662921288123456, "2022-09-11 18:34:48.123456000"), + (1662921287890000, "2022-09-11 18:34:47.890000000"), + (-2208936075000000, "1900-01-01 14:38:45.000000000"), + (0, "1970-01-01 00:00:00.000000000"), + (119731017000000, "1973-10-17 18:36:57.000000000"), + (1234567890000000, "2009-02-13 23:31:30.000000000"), + (2034061609000000, "2034-06-16 09:06:49.000000000"), + ]; + + for (timestamp_micros, formatted) in valid_map.iter().copied() { + let naive_datetime = NaiveDateTime::from_timestamp_micros(timestamp_micros); + assert_eq!(timestamp_micros, naive_datetime.unwrap().timestamp_micros()); + assert_eq!(naive_datetime.unwrap().format("%F %T%.9f").to_string(), formatted); + } + + let invalid = [i64::MAX, i64::MIN]; + + for timestamp_micros in invalid.iter().copied() { + let naive_datetime = NaiveDateTime::from_timestamp_micros(timestamp_micros); + assert!(naive_datetime.is_none()); + } + + // Test that the result of `from_timestamp_micros` compares equal to + // that of `from_timestamp_opt`. + let secs_test = [0, 1, 2, 1000, 1234, 12345678, -1, -2, -1000, -12345678]; + for secs in secs_test.iter().copied() { + assert_eq!( + NaiveDateTime::from_timestamp_micros(secs * 1_000_000), + NaiveDateTime::from_timestamp_opt(secs, 0) + ); + } +} + +#[test] +fn test_datetime_from_timestamp() { + let from_timestamp = |secs| NaiveDateTime::from_timestamp_opt(secs, 0); + let ymdhms = + |y, m, d, h, n, s| NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap(); + assert_eq!(from_timestamp(-1), Some(ymdhms(1969, 12, 31, 23, 59, 59))); + assert_eq!(from_timestamp(0), Some(ymdhms(1970, 1, 1, 0, 0, 0))); + assert_eq!(from_timestamp(1), Some(ymdhms(1970, 1, 1, 0, 0, 1))); + assert_eq!(from_timestamp(1_000_000_000), Some(ymdhms(2001, 9, 9, 1, 46, 40))); + assert_eq!(from_timestamp(0x7fffffff), Some(ymdhms(2038, 1, 19, 3, 14, 7))); + assert_eq!(from_timestamp(i64::MIN), None); + assert_eq!(from_timestamp(i64::MAX), None); +} + +#[test] +fn test_datetime_add() { + fn check( + (y, m, d, h, n, s): (i32, u32, u32, u32, u32, u32), + rhs: Duration, + result: Option<(i32, u32, u32, u32, u32, u32)>, + ) { + let lhs = NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap(); + let sum = result.map(|(y, m, d, h, n, s)| { + NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap() + }); + assert_eq!(lhs.checked_add_signed(rhs), sum); + assert_eq!(lhs.checked_sub_signed(-rhs), sum); + } + + check((2014, 5, 6, 7, 8, 9), Duration::seconds(3600 + 60 + 1), Some((2014, 5, 6, 8, 9, 10))); + check((2014, 5, 6, 7, 8, 9), Duration::seconds(-(3600 + 60 + 1)), Some((2014, 5, 6, 6, 7, 8))); + check((2014, 5, 6, 7, 8, 9), Duration::seconds(86399), Some((2014, 5, 7, 7, 8, 8))); + check((2014, 5, 6, 7, 8, 9), Duration::seconds(86_400 * 10), Some((2014, 5, 16, 7, 8, 9))); + check((2014, 5, 6, 7, 8, 9), Duration::seconds(-86_400 * 10), Some((2014, 4, 26, 7, 8, 9))); + check((2014, 5, 6, 7, 8, 9), Duration::seconds(86_400 * 10), Some((2014, 5, 16, 7, 8, 9))); + + // overflow check + // assumes that we have correct values for MAX/MIN_DAYS_FROM_YEAR_0 from `naive::date`. + // (they are private constants, but the equivalence is tested in that module.) + let max_days_from_year_0 = + NaiveDate::MAX.signed_duration_since(NaiveDate::from_ymd_opt(0, 1, 1).unwrap()); + check((0, 1, 1, 0, 0, 0), max_days_from_year_0, Some((NaiveDate::MAX.year(), 12, 31, 0, 0, 0))); + check( + (0, 1, 1, 0, 0, 0), + max_days_from_year_0 + Duration::seconds(86399), + Some((NaiveDate::MAX.year(), 12, 31, 23, 59, 59)), + ); + check((0, 1, 1, 0, 0, 0), max_days_from_year_0 + Duration::seconds(86_400), None); + check((0, 1, 1, 0, 0, 0), Duration::max_value(), None); + + let min_days_from_year_0 = + NaiveDate::MIN.signed_duration_since(NaiveDate::from_ymd_opt(0, 1, 1).unwrap()); + check((0, 1, 1, 0, 0, 0), min_days_from_year_0, Some((NaiveDate::MIN.year(), 1, 1, 0, 0, 0))); + check((0, 1, 1, 0, 0, 0), min_days_from_year_0 - Duration::seconds(1), None); + check((0, 1, 1, 0, 0, 0), Duration::min_value(), None); +} + +#[test] +fn test_datetime_sub() { + let ymdhms = + |y, m, d, h, n, s| NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap(); + let since = NaiveDateTime::signed_duration_since; + assert_eq!(since(ymdhms(2014, 5, 6, 7, 8, 9), ymdhms(2014, 5, 6, 7, 8, 9)), Duration::zero()); + assert_eq!( + since(ymdhms(2014, 5, 6, 7, 8, 10), ymdhms(2014, 5, 6, 7, 8, 9)), + Duration::seconds(1) + ); + assert_eq!( + since(ymdhms(2014, 5, 6, 7, 8, 9), ymdhms(2014, 5, 6, 7, 8, 10)), + Duration::seconds(-1) + ); + assert_eq!( + since(ymdhms(2014, 5, 7, 7, 8, 9), ymdhms(2014, 5, 6, 7, 8, 10)), + Duration::seconds(86399) + ); + assert_eq!( + since(ymdhms(2001, 9, 9, 1, 46, 39), ymdhms(1970, 1, 1, 0, 0, 0)), + Duration::seconds(999_999_999) + ); +} + +#[test] +fn test_datetime_addassignment() { + let ymdhms = + |y, m, d, h, n, s| NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap(); + let mut date = ymdhms(2016, 10, 1, 10, 10, 10); + date += Duration::minutes(10_000_000); + assert_eq!(date, ymdhms(2035, 10, 6, 20, 50, 10)); + date += Duration::days(10); + assert_eq!(date, ymdhms(2035, 10, 16, 20, 50, 10)); +} + +#[test] +fn test_datetime_subassignment() { + let ymdhms = + |y, m, d, h, n, s| NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap(); + let mut date = ymdhms(2016, 10, 1, 10, 10, 10); + date -= Duration::minutes(10_000_000); + assert_eq!(date, ymdhms(1997, 9, 26, 23, 30, 10)); + date -= Duration::days(10); + assert_eq!(date, ymdhms(1997, 9, 16, 23, 30, 10)); +} + +#[test] +fn test_datetime_timestamp() { + let to_timestamp = |y, m, d, h, n, s| { + NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap().timestamp() + }; + assert_eq!(to_timestamp(1969, 12, 31, 23, 59, 59), -1); + assert_eq!(to_timestamp(1970, 1, 1, 0, 0, 0), 0); + assert_eq!(to_timestamp(1970, 1, 1, 0, 0, 1), 1); + assert_eq!(to_timestamp(2001, 9, 9, 1, 46, 40), 1_000_000_000); + assert_eq!(to_timestamp(2038, 1, 19, 3, 14, 7), 0x7fffffff); +} + +#[test] +fn test_datetime_from_str() { + // valid cases + let valid = [ + "2015-2-18T23:16:9.15", + "-77-02-18T23:16:09", + " +82701 - 05 - 6 T 15 : 9 : 60.898989898989 ", + ]; + for &s in &valid { + let d = match s.parse::() { + Ok(d) => d, + Err(e) => panic!("parsing `{}` has failed: {}", s, e), + }; + let s_ = format!("{:?}", d); + // `s` and `s_` may differ, but `s.parse()` and `s_.parse()` must be same + let d_ = match s_.parse::() { + Ok(d) => d, + Err(e) => { + panic!("`{}` is parsed into `{:?}`, but reparsing that has failed: {}", s, d, e) + } + }; + assert!( + d == d_, + "`{}` is parsed into `{:?}`, but reparsed result \ + `{:?}` does not match", + s, + d, + d_ + ); + } + + // some invalid cases + // since `ParseErrorKind` is private, all we can do is to check if there was an error + assert!("".parse::().is_err()); + assert!("x".parse::().is_err()); + assert!("15".parse::().is_err()); + assert!("15:8:9".parse::().is_err()); + assert!("15-8-9".parse::().is_err()); + assert!("2015-15-15T15:15:15".parse::().is_err()); + assert!("2012-12-12T12:12:12x".parse::().is_err()); + assert!("2012-123-12T12:12:12".parse::().is_err()); + assert!("+ 82701-123-12T12:12:12".parse::().is_err()); + assert!("+802701-123-12T12:12:12".parse::().is_err()); // out-of-bound +} + +#[test] +fn test_datetime_parse_from_str() { + let ymdhms = + |y, m, d, h, n, s| NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap(); + let ymdhmsn = |y, m, d, h, n, s, nano| { + NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_nano_opt(h, n, s, nano).unwrap() + }; + assert_eq!( + NaiveDateTime::parse_from_str("2014-5-7T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), + Ok(ymdhms(2014, 5, 7, 12, 34, 56)) + ); // ignore offset + assert_eq!( + NaiveDateTime::parse_from_str("2015-W06-1 000000", "%G-W%V-%u%H%M%S"), + Ok(ymdhms(2015, 2, 2, 0, 0, 0)) + ); + assert_eq!( + NaiveDateTime::parse_from_str("Fri, 09 Aug 2013 23:54:35 GMT", "%a, %d %b %Y %H:%M:%S GMT"), + Ok(ymdhms(2013, 8, 9, 23, 54, 35)) + ); + assert!(NaiveDateTime::parse_from_str( + "Sat, 09 Aug 2013 23:54:35 GMT", + "%a, %d %b %Y %H:%M:%S GMT" + ) + .is_err()); + assert!(NaiveDateTime::parse_from_str("2014-5-7 12:3456", "%Y-%m-%d %H:%M:%S").is_err()); + assert!(NaiveDateTime::parse_from_str("12:34:56", "%H:%M:%S").is_err()); // insufficient + assert_eq!( + NaiveDateTime::parse_from_str("1441497364", "%s"), + Ok(ymdhms(2015, 9, 5, 23, 56, 4)) + ); + assert_eq!( + NaiveDateTime::parse_from_str("1283929614.1234", "%s.%f"), + Ok(ymdhmsn(2010, 9, 8, 7, 6, 54, 1234)) + ); + assert_eq!( + NaiveDateTime::parse_from_str("1441497364.649", "%s%.3f"), + Ok(ymdhmsn(2015, 9, 5, 23, 56, 4, 649000000)) + ); + assert_eq!( + NaiveDateTime::parse_from_str("1497854303.087654", "%s%.6f"), + Ok(ymdhmsn(2017, 6, 19, 6, 38, 23, 87654000)) + ); + assert_eq!( + NaiveDateTime::parse_from_str("1437742189.918273645", "%s%.9f"), + Ok(ymdhmsn(2015, 7, 24, 12, 49, 49, 918273645)) + ); +} + +#[test] +fn test_datetime_format() { + let dt = NaiveDate::from_ymd_opt(2010, 9, 8).unwrap().and_hms_milli_opt(7, 6, 54, 321).unwrap(); + assert_eq!(dt.format("%c").to_string(), "Wed Sep 8 07:06:54 2010"); + assert_eq!(dt.format("%s").to_string(), "1283929614"); + assert_eq!(dt.format("%t%n%%%n%t").to_string(), "\t\n%\n\t"); + + // a horror of leap second: coming near to you. + let dt = + NaiveDate::from_ymd_opt(2012, 6, 30).unwrap().and_hms_milli_opt(23, 59, 59, 1_000).unwrap(); + assert_eq!(dt.format("%c").to_string(), "Sat Jun 30 23:59:60 2012"); + assert_eq!(dt.format("%s").to_string(), "1341100799"); // not 1341100800, it's intentional. +} + +#[test] +fn test_datetime_add_sub_invariant() { + // issue #37 + let base = NaiveDate::from_ymd_opt(2000, 1, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(); + let t = -946684799990000; + let time = base + Duration::microseconds(t); + assert_eq!(t, time.signed_duration_since(base).num_microseconds().unwrap()); +} + +#[test] +fn test_nanosecond_range() { + const A_BILLION: i64 = 1_000_000_000; + let maximum = "2262-04-11T23:47:16.854775804"; + let parsed: NaiveDateTime = maximum.parse().unwrap(); + let nanos = parsed.timestamp_nanos(); + assert_eq!( + parsed, + NaiveDateTime::from_timestamp_opt(nanos / A_BILLION, (nanos % A_BILLION) as u32).unwrap() + ); + + let minimum = "1677-09-21T00:12:44.000000000"; + let parsed: NaiveDateTime = minimum.parse().unwrap(); + let nanos = parsed.timestamp_nanos(); + assert_eq!( + parsed, + NaiveDateTime::from_timestamp_opt(nanos / A_BILLION, (nanos % A_BILLION) as u32).unwrap() + ); +} + +#[test] +fn test_and_timezone() { + let ndt = NaiveDate::from_ymd_opt(2022, 6, 15).unwrap().and_hms_opt(18, 59, 36).unwrap(); + let dt_utc = ndt.and_local_timezone(Utc).unwrap(); + assert_eq!(dt_utc.naive_local(), ndt); + assert_eq!(dt_utc.timezone(), Utc); + + let offset_tz = FixedOffset::west_opt(4 * 3600).unwrap(); + let dt_offset = ndt.and_local_timezone(offset_tz).unwrap(); + assert_eq!(dt_offset.naive_local(), ndt); + assert_eq!(dt_offset.timezone(), offset_tz); +} diff --git a/javascript-engine/external/chrono/src/naive/internals.rs b/javascript-engine/external/chrono/src/naive/internals.rs new file mode 100644 index 0000000..1b113d5 --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/internals.rs @@ -0,0 +1,816 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! The internal implementation of the calendar and ordinal date. +//! +//! The current implementation is optimized for determining year, month, day and day of week. +//! 4-bit `YearFlags` map to one of 14 possible classes of year in the Gregorian calendar, +//! which are included in every packed `NaiveDate` instance. +//! The conversion between the packed calendar date (`Mdf`) and the ordinal date (`Of`) is +//! based on the moderately-sized lookup table (~1.5KB) +//! and the packed representation is chosen for the efficient lookup. +//! Every internal data structure does not validate its input, +//! but the conversion keeps the valid value valid and the invalid value invalid +//! so that the user-facing `NaiveDate` can validate the input as late as possible. + +#![cfg_attr(feature = "__internal_bench", allow(missing_docs))] + +use crate::Weekday; +use core::{fmt, i32}; +use num_integer::{div_rem, mod_floor}; +use num_traits::FromPrimitive; + +/// The internal date representation. This also includes the packed `Mdf` value. +pub(super) type DateImpl = i32; + +pub(super) const MAX_YEAR: DateImpl = i32::MAX >> 13; +pub(super) const MIN_YEAR: DateImpl = i32::MIN >> 13; + +/// The year flags (aka the dominical letter). +/// +/// There are 14 possible classes of year in the Gregorian calendar: +/// common and leap years starting with Monday through Sunday. +/// The `YearFlags` stores this information into 4 bits `abbb`, +/// where `a` is `1` for the common year (simplifies the `Of` validation) +/// and `bbb` is a non-zero `Weekday` (mapping `Mon` to 7) of the last day in the past year +/// (simplifies the day of week calculation from the 1-based ordinal). +#[allow(unreachable_pub)] // public as an alias for benchmarks only +#[derive(PartialEq, Eq, Copy, Clone)] +pub struct YearFlags(pub(super) u8); + +pub(super) const A: YearFlags = YearFlags(0o15); +pub(super) const AG: YearFlags = YearFlags(0o05); +pub(super) const B: YearFlags = YearFlags(0o14); +pub(super) const BA: YearFlags = YearFlags(0o04); +pub(super) const C: YearFlags = YearFlags(0o13); +pub(super) const CB: YearFlags = YearFlags(0o03); +pub(super) const D: YearFlags = YearFlags(0o12); +pub(super) const DC: YearFlags = YearFlags(0o02); +pub(super) const E: YearFlags = YearFlags(0o11); +pub(super) const ED: YearFlags = YearFlags(0o01); +pub(super) const F: YearFlags = YearFlags(0o17); +pub(super) const FE: YearFlags = YearFlags(0o07); +pub(super) const G: YearFlags = YearFlags(0o16); +pub(super) const GF: YearFlags = YearFlags(0o06); + +static YEAR_TO_FLAGS: [YearFlags; 400] = [ + BA, G, F, E, DC, B, A, G, FE, D, C, B, AG, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, + G, F, E, DC, B, A, G, FE, D, C, B, AG, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, + F, E, DC, B, A, G, FE, D, C, B, AG, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, + E, DC, B, A, G, FE, D, C, B, AG, F, E, D, // 100 + C, B, A, G, FE, D, C, B, AG, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, E, DC, + B, A, G, FE, D, C, B, AG, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, E, DC, B, + A, G, FE, D, C, B, AG, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, E, DC, B, A, + G, FE, D, C, B, AG, F, E, D, CB, A, G, F, // 200 + E, D, C, B, AG, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, E, DC, B, A, G, FE, + D, C, B, AG, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, E, DC, B, A, G, FE, D, + C, B, AG, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, E, DC, B, A, G, FE, D, C, + B, AG, F, E, D, CB, A, G, F, ED, C, B, A, // 300 + G, F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, E, DC, B, A, G, FE, D, C, B, AG, + F, E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, E, DC, B, A, G, FE, D, C, B, AG, F, + E, D, CB, A, G, F, ED, C, B, A, GF, E, D, C, BA, G, F, E, DC, B, A, G, FE, D, C, B, AG, F, E, + D, CB, A, G, F, ED, C, B, A, GF, E, D, C, // 400 +]; + +static YEAR_DELTAS: [u8; 401] = [ + 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, + 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, + 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, + 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24, 25, 25, 25, // 100 + 25, 25, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27, 28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30, + 30, 31, 31, 31, 31, 32, 32, 32, 32, 33, 33, 33, 33, 34, 34, 34, 34, 35, 35, 35, 35, 36, 36, 36, + 36, 37, 37, 37, 37, 38, 38, 38, 38, 39, 39, 39, 39, 40, 40, 40, 40, 41, 41, 41, 41, 42, 42, 42, + 42, 43, 43, 43, 43, 44, 44, 44, 44, 45, 45, 45, 45, 46, 46, 46, 46, 47, 47, 47, 47, 48, 48, 48, + 48, 49, 49, 49, // 200 + 49, 49, 49, 49, 49, 50, 50, 50, 50, 51, 51, 51, 51, 52, 52, 52, 52, 53, 53, 53, 53, 54, 54, 54, + 54, 55, 55, 55, 55, 56, 56, 56, 56, 57, 57, 57, 57, 58, 58, 58, 58, 59, 59, 59, 59, 60, 60, 60, + 60, 61, 61, 61, 61, 62, 62, 62, 62, 63, 63, 63, 63, 64, 64, 64, 64, 65, 65, 65, 65, 66, 66, 66, + 66, 67, 67, 67, 67, 68, 68, 68, 68, 69, 69, 69, 69, 70, 70, 70, 70, 71, 71, 71, 71, 72, 72, 72, + 72, 73, 73, 73, // 300 + 73, 73, 73, 73, 73, 74, 74, 74, 74, 75, 75, 75, 75, 76, 76, 76, 76, 77, 77, 77, 77, 78, 78, 78, + 78, 79, 79, 79, 79, 80, 80, 80, 80, 81, 81, 81, 81, 82, 82, 82, 82, 83, 83, 83, 83, 84, 84, 84, + 84, 85, 85, 85, 85, 86, 86, 86, 86, 87, 87, 87, 87, 88, 88, 88, 88, 89, 89, 89, 89, 90, 90, 90, + 90, 91, 91, 91, 91, 92, 92, 92, 92, 93, 93, 93, 93, 94, 94, 94, 94, 95, 95, 95, 95, 96, 96, 96, + 96, 97, 97, 97, 97, // 400+1 +]; + +pub(super) fn cycle_to_yo(cycle: u32) -> (u32, u32) { + let (mut year_mod_400, mut ordinal0) = div_rem(cycle, 365); + let delta = u32::from(YEAR_DELTAS[year_mod_400 as usize]); + if ordinal0 < delta { + year_mod_400 -= 1; + ordinal0 += 365 - u32::from(YEAR_DELTAS[year_mod_400 as usize]); + } else { + ordinal0 -= delta; + } + (year_mod_400, ordinal0 + 1) +} + +pub(super) fn yo_to_cycle(year_mod_400: u32, ordinal: u32) -> u32 { + year_mod_400 * 365 + u32::from(YEAR_DELTAS[year_mod_400 as usize]) + ordinal - 1 +} + +impl YearFlags { + #[allow(unreachable_pub)] // public as an alias for benchmarks only + #[doc(hidden)] // for benchmarks only + #[inline] + pub fn from_year(year: i32) -> YearFlags { + let year = mod_floor(year, 400); + YearFlags::from_year_mod_400(year) + } + + #[inline] + pub(super) fn from_year_mod_400(year: i32) -> YearFlags { + YEAR_TO_FLAGS[year as usize] + } + + #[inline] + pub(super) fn ndays(&self) -> u32 { + let YearFlags(flags) = *self; + 366 - u32::from(flags >> 3) + } + + #[inline] + pub(super) fn isoweek_delta(&self) -> u32 { + let YearFlags(flags) = *self; + let mut delta = u32::from(flags) & 0b0111; + if delta < 3 { + delta += 7; + } + delta + } + + #[inline] + pub(super) fn nisoweeks(&self) -> u32 { + let YearFlags(flags) = *self; + 52 + ((0b0000_0100_0000_0110 >> flags as usize) & 1) + } +} + +impl fmt::Debug for YearFlags { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + let YearFlags(flags) = *self; + match flags { + 0o15 => "A".fmt(f), + 0o05 => "AG".fmt(f), + 0o14 => "B".fmt(f), + 0o04 => "BA".fmt(f), + 0o13 => "C".fmt(f), + 0o03 => "CB".fmt(f), + 0o12 => "D".fmt(f), + 0o02 => "DC".fmt(f), + 0o11 => "E".fmt(f), + 0o01 => "ED".fmt(f), + 0o10 => "F?".fmt(f), + 0o00 => "FE?".fmt(f), // non-canonical + 0o17 => "F".fmt(f), + 0o07 => "FE".fmt(f), + 0o16 => "G".fmt(f), + 0o06 => "GF".fmt(f), + _ => write!(f, "YearFlags({})", flags), + } + } +} + +pub(super) const MIN_OL: u32 = 1 << 1; +pub(super) const MAX_OL: u32 = 366 << 1; // larger than the non-leap last day `(365 << 1) | 1` +pub(super) const MAX_MDL: u32 = (12 << 6) | (31 << 1) | 1; + +const XX: i8 = -128; +static MDL_TO_OL: [i8; MAX_MDL as usize + 1] = [ + XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, + XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, + XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, XX, // 0 + XX, XX, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, // 1 + XX, XX, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, + 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, + 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, XX, XX, XX, XX, XX, // 2 + XX, XX, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, + 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, + 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, // 3 + XX, XX, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, + 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, + 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, XX, XX, // 4 + XX, XX, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, + 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, + 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, // 5 + XX, XX, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, + 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, + 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, XX, XX, // 6 + XX, XX, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, + 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, + 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, // 7 + XX, XX, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, + 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, + 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, // 8 + XX, XX, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, + 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, + 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, XX, XX, // 9 + XX, XX, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, + 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, + 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, // 10 + XX, XX, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, + 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, + 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, XX, XX, // 11 + XX, XX, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, + 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, + 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, + 100, // 12 +]; + +static OL_TO_MDL: [u8; MAX_OL as usize + 1] = [ + 0, 0, // 0 + 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, // 1 + 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, + 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, + 66, 66, 66, 66, 66, 66, 66, 66, 66, // 2 + 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, + 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, + 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, 74, 72, // 3 + 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, + 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, + 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, 76, 74, // 4 + 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, + 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, + 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, 80, 78, // 5 + 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, + 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, + 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, 82, 80, // 6 + 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, + 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, + 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, 86, 84, // 7 + 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, + 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, + 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, 88, 86, // 8 + 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, + 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, + 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, 90, 88, // 9 + 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, + 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, + 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, 94, 92, // 10 + 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, + 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, + 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, 96, 94, // 11 + 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, + 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, + 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, 98, 100, + 98, // 12 +]; + +/// Ordinal (day of year) and year flags: `(ordinal << 4) | flags`. +/// +/// The whole bits except for the least 3 bits are referred as `Ol` (ordinal and leap flag), +/// which is an index to the `OL_TO_MDL` lookup table. +#[derive(PartialEq, PartialOrd, Copy, Clone)] +pub(super) struct Of(pub(crate) u32); + +impl Of { + #[inline] + pub(super) fn new(ordinal: u32, YearFlags(flags): YearFlags) -> Option { + match ordinal <= 366 { + true => Some(Of((ordinal << 4) | u32::from(flags))), + false => None, + } + } + + #[inline] + pub(super) fn from_mdf(Mdf(mdf): Mdf) -> Of { + let mdl = mdf >> 3; + match MDL_TO_OL.get(mdl as usize) { + Some(&v) => Of(mdf.wrapping_sub((i32::from(v) as u32 & 0x3ff) << 3)), + None => Of(0), + } + } + + #[inline] + pub(super) fn valid(&self) -> bool { + let Of(of) = *self; + let ol = of >> 3; + (MIN_OL..=MAX_OL).contains(&ol) + } + + #[inline] + pub(super) fn ordinal(&self) -> u32 { + let Of(of) = *self; + of >> 4 + } + + #[inline] + pub(super) fn with_ordinal(&self, ordinal: u32) -> Option { + if ordinal > 366 { + return None; + } + + let Of(of) = *self; + Some(Of((of & 0b1111) | (ordinal << 4))) + } + + #[inline] + pub(super) fn flags(&self) -> YearFlags { + let Of(of) = *self; + YearFlags((of & 0b1111) as u8) + } + + #[inline] + pub(super) fn weekday(&self) -> Weekday { + let Of(of) = *self; + Weekday::from_u32(((of >> 4) + (of & 0b111)) % 7).unwrap() + } + + #[inline] + pub(super) fn isoweekdate_raw(&self) -> (u32, Weekday) { + // week ordinal = ordinal + delta + let Of(of) = *self; + let weekord = (of >> 4).wrapping_add(self.flags().isoweek_delta()); + (weekord / 7, Weekday::from_u32(weekord % 7).unwrap()) + } + + #[cfg_attr(feature = "cargo-clippy", allow(clippy::wrong_self_convention))] + #[inline] + pub(super) fn to_mdf(&self) -> Mdf { + Mdf::from_of(*self) + } + + #[inline] + pub(super) fn succ(&self) -> Of { + let Of(of) = *self; + Of(of + (1 << 4)) + } + + #[inline] + pub(super) fn pred(&self) -> Of { + let Of(of) = *self; + Of(of - (1 << 4)) + } +} + +impl fmt::Debug for Of { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + let Of(of) = *self; + write!( + f, + "Of(({} << 4) | {:#04o} /*{:?}*/)", + of >> 4, + of & 0b1111, + YearFlags((of & 0b1111) as u8) + ) + } +} + +/// Month, day of month and year flags: `(month << 9) | (day << 4) | flags` +/// +/// The whole bits except for the least 3 bits are referred as `Mdl` +/// (month, day of month and leap flag), +/// which is an index to the `MDL_TO_OL` lookup table. +#[derive(PartialEq, PartialOrd, Copy, Clone)] +pub(super) struct Mdf(pub(super) u32); + +impl Mdf { + #[inline] + pub(super) fn new(month: u32, day: u32, YearFlags(flags): YearFlags) -> Option { + match month <= 12 && day <= 31 { + true => Some(Mdf((month << 9) | (day << 4) | u32::from(flags))), + false => None, + } + } + + #[inline] + pub(super) fn from_of(Of(of): Of) -> Mdf { + let ol = of >> 3; + match OL_TO_MDL.get(ol as usize) { + Some(&v) => Mdf(of + (u32::from(v) << 3)), + None => Mdf(0), + } + } + + #[cfg(test)] + pub(super) fn valid(&self) -> bool { + let Mdf(mdf) = *self; + let mdl = mdf >> 3; + match MDL_TO_OL.get(mdl as usize) { + Some(&v) => v >= 0, + None => false, + } + } + + #[inline] + pub(super) fn month(&self) -> u32 { + let Mdf(mdf) = *self; + mdf >> 9 + } + + #[inline] + pub(super) fn with_month(&self, month: u32) -> Option { + if month > 12 { + return None; + } + + let Mdf(mdf) = *self; + Some(Mdf((mdf & 0b1_1111_1111) | (month << 9))) + } + + #[inline] + pub(super) fn day(&self) -> u32 { + let Mdf(mdf) = *self; + (mdf >> 4) & 0b1_1111 + } + + #[inline] + pub(super) fn with_day(&self, day: u32) -> Option { + if day > 31 { + return None; + } + + let Mdf(mdf) = *self; + Some(Mdf((mdf & !0b1_1111_0000) | (day << 4))) + } + + #[inline] + pub(super) fn with_flags(&self, YearFlags(flags): YearFlags) -> Mdf { + let Mdf(mdf) = *self; + Mdf((mdf & !0b1111) | u32::from(flags)) + } + + #[cfg_attr(feature = "cargo-clippy", allow(clippy::wrong_self_convention))] + #[inline] + pub(super) fn to_of(&self) -> Of { + Of::from_mdf(*self) + } +} + +impl fmt::Debug for Mdf { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + let Mdf(mdf) = *self; + write!( + f, + "Mdf(({} << 9) | ({} << 4) | {:#04o} /*{:?}*/)", + mdf >> 9, + (mdf >> 4) & 0b1_1111, + mdf & 0b1111, + YearFlags((mdf & 0b1111) as u8) + ) + } +} + +#[cfg(test)] +mod tests { + use num_iter::range_inclusive; + use std::u32; + + use super::{Mdf, Of}; + use super::{YearFlags, A, AG, B, BA, C, CB, D, DC, E, ED, F, FE, G, GF}; + use crate::Weekday; + + const NONLEAP_FLAGS: [YearFlags; 7] = [A, B, C, D, E, F, G]; + const LEAP_FLAGS: [YearFlags; 7] = [AG, BA, CB, DC, ED, FE, GF]; + const FLAGS: [YearFlags; 14] = [A, B, C, D, E, F, G, AG, BA, CB, DC, ED, FE, GF]; + + #[test] + fn test_year_flags_ndays_from_year() { + assert_eq!(YearFlags::from_year(2014).ndays(), 365); + assert_eq!(YearFlags::from_year(2012).ndays(), 366); + assert_eq!(YearFlags::from_year(2000).ndays(), 366); + assert_eq!(YearFlags::from_year(1900).ndays(), 365); + assert_eq!(YearFlags::from_year(1600).ndays(), 366); + assert_eq!(YearFlags::from_year(1).ndays(), 365); + assert_eq!(YearFlags::from_year(0).ndays(), 366); // 1 BCE (proleptic Gregorian) + assert_eq!(YearFlags::from_year(-1).ndays(), 365); // 2 BCE + assert_eq!(YearFlags::from_year(-4).ndays(), 366); // 5 BCE + assert_eq!(YearFlags::from_year(-99).ndays(), 365); // 100 BCE + assert_eq!(YearFlags::from_year(-100).ndays(), 365); // 101 BCE + assert_eq!(YearFlags::from_year(-399).ndays(), 365); // 400 BCE + assert_eq!(YearFlags::from_year(-400).ndays(), 366); // 401 BCE + } + + #[test] + fn test_year_flags_nisoweeks() { + assert_eq!(A.nisoweeks(), 52); + assert_eq!(B.nisoweeks(), 52); + assert_eq!(C.nisoweeks(), 52); + assert_eq!(D.nisoweeks(), 53); + assert_eq!(E.nisoweeks(), 52); + assert_eq!(F.nisoweeks(), 52); + assert_eq!(G.nisoweeks(), 52); + assert_eq!(AG.nisoweeks(), 52); + assert_eq!(BA.nisoweeks(), 52); + assert_eq!(CB.nisoweeks(), 52); + assert_eq!(DC.nisoweeks(), 53); + assert_eq!(ED.nisoweeks(), 53); + assert_eq!(FE.nisoweeks(), 52); + assert_eq!(GF.nisoweeks(), 52); + } + + #[test] + fn test_of() { + fn check(expected: bool, flags: YearFlags, ordinal1: u32, ordinal2: u32) { + for ordinal in range_inclusive(ordinal1, ordinal2) { + let of = match Of::new(ordinal, flags) { + Some(of) => of, + None if !expected => continue, + None => panic!("Of::new({}, {:?}) returned None", ordinal, flags), + }; + + assert!( + of.valid() == expected, + "ordinal {} = {:?} should be {} for dominical year {:?}", + ordinal, + of, + if expected { "valid" } else { "invalid" }, + flags + ); + } + } + + for &flags in NONLEAP_FLAGS.iter() { + check(false, flags, 0, 0); + check(true, flags, 1, 365); + check(false, flags, 366, 1024); + check(false, flags, u32::MAX, u32::MAX); + } + + for &flags in LEAP_FLAGS.iter() { + check(false, flags, 0, 0); + check(true, flags, 1, 366); + check(false, flags, 367, 1024); + check(false, flags, u32::MAX, u32::MAX); + } + } + + #[test] + fn test_mdf_valid() { + fn check(expected: bool, flags: YearFlags, month1: u32, day1: u32, month2: u32, day2: u32) { + for month in range_inclusive(month1, month2) { + for day in range_inclusive(day1, day2) { + let mdf = match Mdf::new(month, day, flags) { + Some(mdf) => mdf, + None if !expected => continue, + None => panic!("Mdf::new({}, {}, {:?}) returned None", month, day, flags), + }; + + assert!( + mdf.valid() == expected, + "month {} day {} = {:?} should be {} for dominical year {:?}", + month, + day, + mdf, + if expected { "valid" } else { "invalid" }, + flags + ); + } + } + } + + for &flags in NONLEAP_FLAGS.iter() { + check(false, flags, 0, 0, 0, 1024); + check(false, flags, 0, 0, 16, 0); + check(true, flags, 1, 1, 1, 31); + check(false, flags, 1, 32, 1, 1024); + check(true, flags, 2, 1, 2, 28); + check(false, flags, 2, 29, 2, 1024); + check(true, flags, 3, 1, 3, 31); + check(false, flags, 3, 32, 3, 1024); + check(true, flags, 4, 1, 4, 30); + check(false, flags, 4, 31, 4, 1024); + check(true, flags, 5, 1, 5, 31); + check(false, flags, 5, 32, 5, 1024); + check(true, flags, 6, 1, 6, 30); + check(false, flags, 6, 31, 6, 1024); + check(true, flags, 7, 1, 7, 31); + check(false, flags, 7, 32, 7, 1024); + check(true, flags, 8, 1, 8, 31); + check(false, flags, 8, 32, 8, 1024); + check(true, flags, 9, 1, 9, 30); + check(false, flags, 9, 31, 9, 1024); + check(true, flags, 10, 1, 10, 31); + check(false, flags, 10, 32, 10, 1024); + check(true, flags, 11, 1, 11, 30); + check(false, flags, 11, 31, 11, 1024); + check(true, flags, 12, 1, 12, 31); + check(false, flags, 12, 32, 12, 1024); + check(false, flags, 13, 0, 16, 1024); + check(false, flags, u32::MAX, 0, u32::MAX, 1024); + check(false, flags, 0, u32::MAX, 16, u32::MAX); + check(false, flags, u32::MAX, u32::MAX, u32::MAX, u32::MAX); + } + + for &flags in LEAP_FLAGS.iter() { + check(false, flags, 0, 0, 0, 1024); + check(false, flags, 0, 0, 16, 0); + check(true, flags, 1, 1, 1, 31); + check(false, flags, 1, 32, 1, 1024); + check(true, flags, 2, 1, 2, 29); + check(false, flags, 2, 30, 2, 1024); + check(true, flags, 3, 1, 3, 31); + check(false, flags, 3, 32, 3, 1024); + check(true, flags, 4, 1, 4, 30); + check(false, flags, 4, 31, 4, 1024); + check(true, flags, 5, 1, 5, 31); + check(false, flags, 5, 32, 5, 1024); + check(true, flags, 6, 1, 6, 30); + check(false, flags, 6, 31, 6, 1024); + check(true, flags, 7, 1, 7, 31); + check(false, flags, 7, 32, 7, 1024); + check(true, flags, 8, 1, 8, 31); + check(false, flags, 8, 32, 8, 1024); + check(true, flags, 9, 1, 9, 30); + check(false, flags, 9, 31, 9, 1024); + check(true, flags, 10, 1, 10, 31); + check(false, flags, 10, 32, 10, 1024); + check(true, flags, 11, 1, 11, 30); + check(false, flags, 11, 31, 11, 1024); + check(true, flags, 12, 1, 12, 31); + check(false, flags, 12, 32, 12, 1024); + check(false, flags, 13, 0, 16, 1024); + check(false, flags, u32::MAX, 0, u32::MAX, 1024); + check(false, flags, 0, u32::MAX, 16, u32::MAX); + check(false, flags, u32::MAX, u32::MAX, u32::MAX, u32::MAX); + } + } + + #[test] + fn test_of_fields() { + for &flags in FLAGS.iter() { + for ordinal in range_inclusive(1u32, 366) { + let of = Of::new(ordinal, flags).unwrap(); + if of.valid() { + assert_eq!(of.ordinal(), ordinal); + } + } + } + } + + #[test] + fn test_of_with_fields() { + fn check(flags: YearFlags, ordinal: u32) { + let of = Of::new(ordinal, flags).unwrap(); + + for ordinal in range_inclusive(0u32, 1024) { + let of = match of.with_ordinal(ordinal) { + Some(of) => of, + None if ordinal > 366 => continue, + None => panic!("failed to create Of with ordinal {}", ordinal), + }; + + assert_eq!(of.valid(), Of::new(ordinal, flags).unwrap().valid()); + if of.valid() { + assert_eq!(of.ordinal(), ordinal); + } + } + } + + for &flags in NONLEAP_FLAGS.iter() { + check(flags, 1); + check(flags, 365); + } + for &flags in LEAP_FLAGS.iter() { + check(flags, 1); + check(flags, 366); + } + } + + #[test] + fn test_of_weekday() { + assert_eq!(Of::new(1, A).unwrap().weekday(), Weekday::Sun); + assert_eq!(Of::new(1, B).unwrap().weekday(), Weekday::Sat); + assert_eq!(Of::new(1, C).unwrap().weekday(), Weekday::Fri); + assert_eq!(Of::new(1, D).unwrap().weekday(), Weekday::Thu); + assert_eq!(Of::new(1, E).unwrap().weekday(), Weekday::Wed); + assert_eq!(Of::new(1, F).unwrap().weekday(), Weekday::Tue); + assert_eq!(Of::new(1, G).unwrap().weekday(), Weekday::Mon); + assert_eq!(Of::new(1, AG).unwrap().weekday(), Weekday::Sun); + assert_eq!(Of::new(1, BA).unwrap().weekday(), Weekday::Sat); + assert_eq!(Of::new(1, CB).unwrap().weekday(), Weekday::Fri); + assert_eq!(Of::new(1, DC).unwrap().weekday(), Weekday::Thu); + assert_eq!(Of::new(1, ED).unwrap().weekday(), Weekday::Wed); + assert_eq!(Of::new(1, FE).unwrap().weekday(), Weekday::Tue); + assert_eq!(Of::new(1, GF).unwrap().weekday(), Weekday::Mon); + + for &flags in FLAGS.iter() { + let mut prev = Of::new(1, flags).unwrap().weekday(); + for ordinal in range_inclusive(2u32, flags.ndays()) { + let of = Of::new(ordinal, flags).unwrap(); + let expected = prev.succ(); + assert_eq!(of.weekday(), expected); + prev = expected; + } + } + } + + #[test] + fn test_mdf_fields() { + for &flags in FLAGS.iter() { + for month in range_inclusive(1u32, 12) { + for day in range_inclusive(1u32, 31) { + let mdf = match Mdf::new(month, day, flags) { + Some(mdf) => mdf, + None => continue, + }; + + if mdf.valid() { + assert_eq!(mdf.month(), month); + assert_eq!(mdf.day(), day); + } + } + } + } + } + + #[test] + fn test_mdf_with_fields() { + fn check(flags: YearFlags, month: u32, day: u32) { + let mdf = Mdf::new(month, day, flags).unwrap(); + + for month in range_inclusive(0u32, 16) { + let mdf = match mdf.with_month(month) { + Some(mdf) => mdf, + None if month > 12 => continue, + None => panic!("failed to create Mdf with month {}", month), + }; + + if mdf.valid() { + assert_eq!(mdf.month(), month); + assert_eq!(mdf.day(), day); + } + } + + for day in range_inclusive(0u32, 1024) { + let mdf = match mdf.with_day(day) { + Some(mdf) => mdf, + None if day > 31 => continue, + None => panic!("failed to create Mdf with month {}", month), + }; + + if mdf.valid() { + assert_eq!(mdf.month(), month); + assert_eq!(mdf.day(), day); + } + } + } + + for &flags in NONLEAP_FLAGS.iter() { + check(flags, 1, 1); + check(flags, 1, 31); + check(flags, 2, 1); + check(flags, 2, 28); + check(flags, 2, 29); + check(flags, 12, 31); + } + for &flags in LEAP_FLAGS.iter() { + check(flags, 1, 1); + check(flags, 1, 31); + check(flags, 2, 1); + check(flags, 2, 29); + check(flags, 2, 30); + check(flags, 12, 31); + } + } + + #[test] + fn test_of_isoweekdate_raw() { + for &flags in FLAGS.iter() { + // January 4 should be in the first week + let (week, _) = Of::new(4 /* January 4 */, flags).unwrap().isoweekdate_raw(); + assert_eq!(week, 1); + } + } + + #[test] + fn test_of_to_mdf() { + for i in range_inclusive(0u32, 8192) { + let of = Of(i); + assert_eq!(of.valid(), of.to_mdf().valid()); + } + } + + #[test] + fn test_mdf_to_of() { + for i in range_inclusive(0u32, 8192) { + let mdf = Mdf(i); + assert_eq!(mdf.valid(), mdf.to_of().valid()); + } + } + + #[test] + fn test_of_to_mdf_to_of() { + for i in range_inclusive(0u32, 8192) { + let of = Of(i); + if of.valid() { + assert_eq!(of, of.to_mdf().to_of()); + } + } + } + + #[test] + fn test_mdf_to_of_to_mdf() { + for i in range_inclusive(0u32, 8192) { + let mdf = Mdf(i); + if mdf.valid() { + assert_eq!(mdf, mdf.to_of().to_mdf()); + } + } + } +} diff --git a/javascript-engine/external/chrono/src/naive/isoweek.rs b/javascript-engine/external/chrono/src/naive/isoweek.rs new file mode 100644 index 0000000..109535f --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/isoweek.rs @@ -0,0 +1,167 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! ISO 8601 week. + +use core::fmt; + +use super::internals::{DateImpl, Of, YearFlags}; + +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +/// ISO 8601 week. +/// +/// This type, combined with [`Weekday`](../enum.Weekday.html), +/// constitutes the ISO 8601 [week date](./struct.NaiveDate.html#week-date). +/// One can retrieve this type from the existing [`Datelike`](../trait.Datelike.html) types +/// via the [`Datelike::iso_week`](../trait.Datelike.html#tymethod.iso_week) method. +#[derive(PartialEq, Eq, PartialOrd, Ord, Copy, Clone)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +pub struct IsoWeek { + // note that this allows for larger year range than `NaiveDate`. + // this is crucial because we have an edge case for the first and last week supported, + // which year number might not match the calendar year number. + ywf: DateImpl, // (year << 10) | (week << 4) | flag +} + +/// Returns the corresponding `IsoWeek` from the year and the `Of` internal value. +// +// internal use only. we don't expose the public constructor for `IsoWeek` for now, +// because the year range for the week date and the calendar date do not match and +// it is confusing to have a date that is out of range in one and not in another. +// currently we sidestep this issue by making `IsoWeek` fully dependent of `Datelike`. +pub(super) fn iso_week_from_yof(year: i32, of: Of) -> IsoWeek { + let (rawweek, _) = of.isoweekdate_raw(); + let (year, week) = if rawweek < 1 { + // previous year + let prevlastweek = YearFlags::from_year(year - 1).nisoweeks(); + (year - 1, prevlastweek) + } else { + let lastweek = of.flags().nisoweeks(); + if rawweek > lastweek { + // next year + (year + 1, 1) + } else { + (year, rawweek) + } + }; + IsoWeek { ywf: (year << 10) | (week << 4) as DateImpl | DateImpl::from(of.flags().0) } +} + +impl IsoWeek { + /// Returns the year number for this ISO week. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike, Weekday}; + /// + /// let d = NaiveDate::from_isoywd(2015, 1, Weekday::Mon); + /// assert_eq!(d.iso_week().year(), 2015); + /// ``` + /// + /// This year number might not match the calendar year number. + /// Continuing the example... + /// + /// ``` + /// # use chrono::{NaiveDate, Datelike, Weekday}; + /// # let d = NaiveDate::from_isoywd(2015, 1, Weekday::Mon); + /// assert_eq!(d.year(), 2014); + /// assert_eq!(d, NaiveDate::from_ymd_opt(2014, 12, 29).unwrap()); + /// ``` + #[inline] + pub fn year(&self) -> i32 { + self.ywf >> 10 + } + + /// Returns the ISO week number starting from 1. + /// + /// The return value ranges from 1 to 53. (The last week of year differs by years.) + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike, Weekday}; + /// + /// let d = NaiveDate::from_isoywd(2015, 15, Weekday::Mon); + /// assert_eq!(d.iso_week().week(), 15); + /// ``` + #[inline] + pub fn week(&self) -> u32 { + ((self.ywf >> 4) & 0x3f) as u32 + } + + /// Returns the ISO week number starting from 0. + /// + /// The return value ranges from 0 to 52. (The last week of year differs by years.) + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveDate, Datelike, Weekday}; + /// + /// let d = NaiveDate::from_isoywd(2015, 15, Weekday::Mon); + /// assert_eq!(d.iso_week().week0(), 14); + /// ``` + #[inline] + pub fn week0(&self) -> u32 { + ((self.ywf >> 4) & 0x3f) as u32 - 1 + } +} + +/// The `Debug` output of the ISO week `w` is the same as +/// [`d.format("%G-W%V")`](../format/strftime/index.html) +/// where `d` is any `NaiveDate` value in that week. +/// +/// # Example +/// +/// ``` +/// use chrono::{NaiveDate, Datelike}; +/// +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(2015, 9, 5).unwrap().iso_week()), "2015-W36"); +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt( 0, 1, 3).unwrap().iso_week()), "0000-W01"); +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(9999, 12, 31).unwrap().iso_week()), "9999-W52"); +/// ``` +/// +/// ISO 8601 requires an explicit sign for years before 1 BCE or after 9999 CE. +/// +/// ``` +/// # use chrono::{NaiveDate, Datelike}; +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt( 0, 1, 2).unwrap().iso_week()), "-0001-W52"); +/// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(10000, 12, 31).unwrap().iso_week()), "+10000-W52"); +/// ``` +impl fmt::Debug for IsoWeek { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + let year = self.year(); + let week = self.week(); + if (0..=9999).contains(&year) { + write!(f, "{:04}-W{:02}", year, week) + } else { + // ISO 8601 requires the explicit sign for out-of-range years + write!(f, "{:+05}-W{:02}", year, week) + } + } +} + +#[cfg(test)] +mod tests { + use crate::naive::{internals, NaiveDate}; + use crate::Datelike; + + #[test] + fn test_iso_week_extremes() { + let minweek = NaiveDate::MIN.iso_week(); + let maxweek = NaiveDate::MAX.iso_week(); + + assert_eq!(minweek.year(), internals::MIN_YEAR); + assert_eq!(minweek.week(), 1); + assert_eq!(minweek.week0(), 0); + assert_eq!(format!("{:?}", minweek), NaiveDate::MIN.format("%G-W%V").to_string()); + + assert_eq!(maxweek.year(), internals::MAX_YEAR + 1); + assert_eq!(maxweek.week(), 1); + assert_eq!(maxweek.week0(), 0); + assert_eq!(format!("{:?}", maxweek), NaiveDate::MAX.format("%G-W%V").to_string()); + } +} diff --git a/javascript-engine/external/chrono/src/naive/mod.rs b/javascript-engine/external/chrono/src/naive/mod.rs new file mode 100644 index 0000000..c41acba --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/mod.rs @@ -0,0 +1,39 @@ +//! Date and time types unconcerned with timezones. +//! +//! They are primarily building blocks for other types +//! (e.g. [`TimeZone`](../offset/trait.TimeZone.html)), +//! but can be also used for the simpler date and time handling. + +mod date; +pub(crate) mod datetime; +mod internals; +mod isoweek; +mod time; + +#[allow(deprecated)] +pub use self::date::{Days, NaiveDate, NaiveWeek, MAX_DATE, MIN_DATE}; +#[cfg(feature = "rustc-serialize")] +#[allow(deprecated)] +pub use self::datetime::rustc_serialize::TsSeconds; +#[allow(deprecated)] +pub use self::datetime::{NaiveDateTime, MAX_DATETIME, MIN_DATETIME}; +pub use self::isoweek::IsoWeek; +pub use self::time::NaiveTime; + +#[cfg(feature = "__internal_bench")] +#[doc(hidden)] +pub use self::internals::YearFlags as __BenchYearFlags; + +/// Serialization/Deserialization of naive types in alternate formats +/// +/// The various modules in here are intended to be used with serde's [`with` +/// annotation][1] to serialize as something other than the default [RFC +/// 3339][2] format. +/// +/// [1]: https://serde.rs/attributes.html#field-attributes +/// [2]: https://tools.ietf.org/html/rfc3339 +#[cfg(feature = "serde")] +#[cfg_attr(docsrs, doc(cfg(feature = "serde")))] +pub mod serde { + pub use super::datetime::serde::*; +} diff --git a/javascript-engine/external/chrono/src/naive/time/mod.rs b/javascript-engine/external/chrono/src/naive/time/mod.rs new file mode 100644 index 0000000..1d36583 --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/time/mod.rs @@ -0,0 +1,1390 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! ISO 8601 time without timezone. + +#[cfg(any(feature = "alloc", feature = "std", test))] +use core::borrow::Borrow; +use core::ops::{Add, AddAssign, Sub, SubAssign}; +use core::{fmt, str}; + +use num_integer::div_mod_floor; +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +#[cfg(any(feature = "alloc", feature = "std", test))] +use crate::format::DelayedFormat; +use crate::format::{parse, write_hundreds, ParseError, ParseResult, Parsed, StrftimeItems}; +use crate::format::{Fixed, Item, Numeric, Pad}; +use crate::oldtime::Duration as OldDuration; +use crate::Timelike; + +#[cfg(feature = "rustc-serialize")] +mod rustc_serialize; + +#[cfg(feature = "serde")] +mod serde; + +#[cfg(test)] +mod tests; + +/// ISO 8601 time without timezone. +/// Allows for the nanosecond precision and optional leap second representation. +/// +/// # Leap Second Handling +/// +/// Since 1960s, the manmade atomic clock has been so accurate that +/// it is much more accurate than Earth's own motion. +/// It became desirable to define the civil time in terms of the atomic clock, +/// but that risks the desynchronization of the civil time from Earth. +/// To account for this, the designers of the Coordinated Universal Time (UTC) +/// made that the UTC should be kept within 0.9 seconds of the observed Earth-bound time. +/// When the mean solar day is longer than the ideal (86,400 seconds), +/// the error slowly accumulates and it is necessary to add a **leap second** +/// to slow the UTC down a bit. +/// (We may also remove a second to speed the UTC up a bit, but it never happened.) +/// The leap second, if any, follows 23:59:59 of June 30 or December 31 in the UTC. +/// +/// Fast forward to the 21st century, +/// we have seen 26 leap seconds from January 1972 to December 2015. +/// Yes, 26 seconds. Probably you can read this paragraph within 26 seconds. +/// But those 26 seconds, and possibly more in the future, are never predictable, +/// and whether to add a leap second or not is known only before 6 months. +/// Internet-based clocks (via NTP) do account for known leap seconds, +/// but the system API normally doesn't (and often can't, with no network connection) +/// and there is no reliable way to retrieve leap second information. +/// +/// Chrono does not try to accurately implement leap seconds; it is impossible. +/// Rather, **it allows for leap seconds but behaves as if there are *no other* leap seconds.** +/// Various operations will ignore any possible leap second(s) +/// except when any of the operands were actually leap seconds. +/// +/// If you cannot tolerate this behavior, +/// you must use a separate `TimeZone` for the International Atomic Time (TAI). +/// TAI is like UTC but has no leap seconds, and thus slightly differs from UTC. +/// Chrono does not yet provide such implementation, but it is planned. +/// +/// ## Representing Leap Seconds +/// +/// The leap second is indicated via fractional seconds more than 1 second. +/// This makes possible to treat a leap second as the prior non-leap second +/// if you don't care about sub-second accuracy. +/// You should use the proper formatting to get the raw leap second. +/// +/// All methods accepting fractional seconds will accept such values. +/// +/// ``` +/// use chrono::{NaiveDate, NaiveTime, Utc, TimeZone}; +/// +/// let t = NaiveTime::from_hms_milli_opt(8, 59, 59, 1_000).unwrap(); +/// +/// let dt1 = NaiveDate::from_ymd_opt(2015, 7, 1).unwrap().and_hms_micro_opt(8, 59, 59, 1_000_000).unwrap(); +/// +/// let dt2 = NaiveDate::from_ymd_opt(2015, 6, 30).unwrap().and_hms_nano_opt(23, 59, 59, 1_000_000_000).unwrap().and_local_timezone(Utc).unwrap(); +/// # let _ = (t, dt1, dt2); +/// ``` +/// +/// Note that the leap second can happen anytime given an appropriate time zone; +/// 2015-07-01 01:23:60 would be a proper leap second if UTC+01:24 had existed. +/// Practically speaking, though, by the time of the first leap second on 1972-06-30, +/// every time zone offset around the world has standardized to the 5-minute alignment. +/// +/// ## Date And Time Arithmetics +/// +/// As a concrete example, let's assume that `03:00:60` and `04:00:60` are leap seconds. +/// In reality, of course, leap seconds are separated by at least 6 months. +/// We will also use some intuitive concise notations for the explanation. +/// +/// `Time + Duration` +/// (short for [`NaiveTime::overflowing_add_signed`](#method.overflowing_add_signed)): +/// +/// - `03:00:00 + 1s = 03:00:01`. +/// - `03:00:59 + 60s = 03:02:00`. +/// - `03:00:59 + 1s = 03:01:00`. +/// - `03:00:60 + 1s = 03:01:00`. +/// Note that the sum is identical to the previous. +/// - `03:00:60 + 60s = 03:01:59`. +/// - `03:00:60 + 61s = 03:02:00`. +/// - `03:00:60.1 + 0.8s = 03:00:60.9`. +/// +/// `Time - Duration` +/// (short for [`NaiveTime::overflowing_sub_signed`](#method.overflowing_sub_signed)): +/// +/// - `03:00:00 - 1s = 02:59:59`. +/// - `03:01:00 - 1s = 03:00:59`. +/// - `03:01:00 - 60s = 03:00:00`. +/// - `03:00:60 - 60s = 03:00:00`. +/// Note that the result is identical to the previous. +/// - `03:00:60.7 - 0.4s = 03:00:60.3`. +/// - `03:00:60.7 - 0.9s = 03:00:59.8`. +/// +/// `Time - Time` +/// (short for [`NaiveTime::signed_duration_since`](#method.signed_duration_since)): +/// +/// - `04:00:00 - 03:00:00 = 3600s`. +/// - `03:01:00 - 03:00:00 = 60s`. +/// - `03:00:60 - 03:00:00 = 60s`. +/// Note that the difference is identical to the previous. +/// - `03:00:60.6 - 03:00:59.4 = 1.2s`. +/// - `03:01:00 - 03:00:59.8 = 0.2s`. +/// - `03:01:00 - 03:00:60.5 = 0.5s`. +/// Note that the difference is larger than the previous, +/// even though the leap second clearly follows the previous whole second. +/// - `04:00:60.9 - 03:00:60.1 = +/// (04:00:60.9 - 04:00:00) + (04:00:00 - 03:01:00) + (03:01:00 - 03:00:60.1) = +/// 60.9s + 3540s + 0.9s = 3601.8s`. +/// +/// In general, +/// +/// - `Time + Duration` unconditionally equals to `Duration + Time`. +/// +/// - `Time - Duration` unconditionally equals to `Time + (-Duration)`. +/// +/// - `Time1 - Time2` unconditionally equals to `-(Time2 - Time1)`. +/// +/// - Associativity does not generally hold, because +/// `(Time + Duration1) - Duration2` no longer equals to `Time + (Duration1 - Duration2)` +/// for two positive durations. +/// +/// - As a special case, `(Time + Duration) - Duration` also does not equal to `Time`. +/// +/// - If you can assume that all durations have the same sign, however, +/// then the associativity holds: +/// `(Time + Duration1) + Duration2` equals to `Time + (Duration1 + Duration2)` +/// for two positive durations. +/// +/// ## Reading And Writing Leap Seconds +/// +/// The "typical" leap seconds on the minute boundary are +/// correctly handled both in the formatting and parsing. +/// The leap second in the human-readable representation +/// will be represented as the second part being 60, as required by ISO 8601. +/// +/// ``` +/// use chrono::{Utc, TimeZone, NaiveDate}; +/// +/// let dt = NaiveDate::from_ymd_opt(2015, 6, 30).unwrap().and_hms_milli_opt(23, 59, 59, 1_000).unwrap().and_local_timezone(Utc).unwrap(); +/// assert_eq!(format!("{:?}", dt), "2015-06-30T23:59:60Z"); +/// ``` +/// +/// There are hypothetical leap seconds not on the minute boundary +/// nevertheless supported by Chrono. +/// They are allowed for the sake of completeness and consistency; +/// there were several "exotic" time zone offsets with fractional minutes prior to UTC after all. +/// For such cases the human-readable representation is ambiguous +/// and would be read back to the next non-leap second. +/// +/// ``` +/// use chrono::{DateTime, Utc, TimeZone, NaiveDate}; +/// +/// let dt = NaiveDate::from_ymd_opt(2015, 6, 30).unwrap().and_hms_milli_opt(23, 56, 4, 1_000).unwrap().and_local_timezone(Utc).unwrap(); +/// assert_eq!(format!("{:?}", dt), "2015-06-30T23:56:05Z"); +/// +/// let dt = Utc.with_ymd_and_hms(2015, 6, 30, 23, 56, 5).unwrap(); +/// assert_eq!(format!("{:?}", dt), "2015-06-30T23:56:05Z"); +/// assert_eq!(DateTime::parse_from_rfc3339("2015-06-30T23:56:05Z").unwrap(), dt); +/// ``` +/// +/// Since Chrono alone cannot determine any existence of leap seconds, +/// **there is absolutely no guarantee that the leap second read has actually happened**. +#[derive(PartialEq, Eq, Hash, PartialOrd, Ord, Copy, Clone)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +pub struct NaiveTime { + secs: u32, + frac: u32, +} + +#[cfg(feature = "arbitrary")] +impl arbitrary::Arbitrary<'_> for NaiveTime { + fn arbitrary(u: &mut arbitrary::Unstructured) -> arbitrary::Result { + let secs = u.int_in_range(0..=86_399)?; + let nano = u.int_in_range(0..=1_999_999_999)?; + let time = NaiveTime::from_num_seconds_from_midnight_opt(secs, nano) + .expect("Could not generate a valid chrono::NaiveTime. It looks like implementation of Arbitrary for NaiveTime is erroneous."); + Ok(time) + } +} + +impl NaiveTime { + /// Makes a new `NaiveTime` from hour, minute and second. + /// + /// No [leap second](#leap-second-handling) is allowed here; + /// use `NaiveTime::from_hms_*` methods with a subsecond parameter instead. + /// + /// Panics on invalid hour, minute and/or second. + #[deprecated(since = "0.4.23", note = "use `from_hms_opt()` instead")] + #[inline] + pub fn from_hms(hour: u32, min: u32, sec: u32) -> NaiveTime { + NaiveTime::from_hms_opt(hour, min, sec).expect("invalid time") + } + + /// Makes a new `NaiveTime` from hour, minute and second. + /// + /// No [leap second](#leap-second-handling) is allowed here; + /// use `NaiveTime::from_hms_*_opt` methods with a subsecond parameter instead. + /// + /// Returns `None` on invalid hour, minute and/or second. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveTime; + /// + /// let from_hms_opt = NaiveTime::from_hms_opt; + /// + /// assert!(from_hms_opt(0, 0, 0).is_some()); + /// assert!(from_hms_opt(23, 59, 59).is_some()); + /// assert!(from_hms_opt(24, 0, 0).is_none()); + /// assert!(from_hms_opt(23, 60, 0).is_none()); + /// assert!(from_hms_opt(23, 59, 60).is_none()); + /// ``` + #[inline] + pub fn from_hms_opt(hour: u32, min: u32, sec: u32) -> Option { + NaiveTime::from_hms_nano_opt(hour, min, sec, 0) + } + + /// Makes a new `NaiveTime` from hour, minute, second and millisecond. + /// + /// The millisecond part can exceed 1,000 + /// in order to represent the [leap second](#leap-second-handling). + /// + /// Panics on invalid hour, minute, second and/or millisecond. + #[deprecated(since = "0.4.23", note = "use `from_hms_milli_opt()` instead")] + #[inline] + pub fn from_hms_milli(hour: u32, min: u32, sec: u32, milli: u32) -> NaiveTime { + NaiveTime::from_hms_milli_opt(hour, min, sec, milli).expect("invalid time") + } + + /// Makes a new `NaiveTime` from hour, minute, second and millisecond. + /// + /// The millisecond part can exceed 1,000 + /// in order to represent the [leap second](#leap-second-handling). + /// + /// Returns `None` on invalid hour, minute, second and/or millisecond. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveTime; + /// + /// let from_hmsm_opt = NaiveTime::from_hms_milli_opt; + /// + /// assert!(from_hmsm_opt(0, 0, 0, 0).is_some()); + /// assert!(from_hmsm_opt(23, 59, 59, 999).is_some()); + /// assert!(from_hmsm_opt(23, 59, 59, 1_999).is_some()); // a leap second after 23:59:59 + /// assert!(from_hmsm_opt(24, 0, 0, 0).is_none()); + /// assert!(from_hmsm_opt(23, 60, 0, 0).is_none()); + /// assert!(from_hmsm_opt(23, 59, 60, 0).is_none()); + /// assert!(from_hmsm_opt(23, 59, 59, 2_000).is_none()); + /// ``` + #[inline] + pub fn from_hms_milli_opt(hour: u32, min: u32, sec: u32, milli: u32) -> Option { + milli + .checked_mul(1_000_000) + .and_then(|nano| NaiveTime::from_hms_nano_opt(hour, min, sec, nano)) + } + + /// Makes a new `NaiveTime` from hour, minute, second and microsecond. + /// + /// The microsecond part can exceed 1,000,000 + /// in order to represent the [leap second](#leap-second-handling). + /// + /// Panics on invalid hour, minute, second and/or microsecond. + #[deprecated(since = "0.4.23", note = "use `from_hms_micro_opt()` instead")] + #[inline] + pub fn from_hms_micro(hour: u32, min: u32, sec: u32, micro: u32) -> NaiveTime { + NaiveTime::from_hms_micro_opt(hour, min, sec, micro).expect("invalid time") + } + + /// Makes a new `NaiveTime` from hour, minute, second and microsecond. + /// + /// The microsecond part can exceed 1,000,000 + /// in order to represent the [leap second](#leap-second-handling). + /// + /// Returns `None` on invalid hour, minute, second and/or microsecond. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveTime; + /// + /// let from_hmsu_opt = NaiveTime::from_hms_micro_opt; + /// + /// assert!(from_hmsu_opt(0, 0, 0, 0).is_some()); + /// assert!(from_hmsu_opt(23, 59, 59, 999_999).is_some()); + /// assert!(from_hmsu_opt(23, 59, 59, 1_999_999).is_some()); // a leap second after 23:59:59 + /// assert!(from_hmsu_opt(24, 0, 0, 0).is_none()); + /// assert!(from_hmsu_opt(23, 60, 0, 0).is_none()); + /// assert!(from_hmsu_opt(23, 59, 60, 0).is_none()); + /// assert!(from_hmsu_opt(23, 59, 59, 2_000_000).is_none()); + /// ``` + #[inline] + pub fn from_hms_micro_opt(hour: u32, min: u32, sec: u32, micro: u32) -> Option { + micro.checked_mul(1_000).and_then(|nano| NaiveTime::from_hms_nano_opt(hour, min, sec, nano)) + } + + /// Makes a new `NaiveTime` from hour, minute, second and nanosecond. + /// + /// The nanosecond part can exceed 1,000,000,000 + /// in order to represent the [leap second](#leap-second-handling). + /// + /// Panics on invalid hour, minute, second and/or nanosecond. + #[deprecated(since = "0.4.23", note = "use `from_hms_nano_opt()` instead")] + #[inline] + pub fn from_hms_nano(hour: u32, min: u32, sec: u32, nano: u32) -> NaiveTime { + NaiveTime::from_hms_nano_opt(hour, min, sec, nano).expect("invalid time") + } + + /// Makes a new `NaiveTime` from hour, minute, second and nanosecond. + /// + /// The nanosecond part can exceed 1,000,000,000 + /// in order to represent the [leap second](#leap-second-handling). + /// + /// Returns `None` on invalid hour, minute, second and/or nanosecond. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveTime; + /// + /// let from_hmsn_opt = NaiveTime::from_hms_nano_opt; + /// + /// assert!(from_hmsn_opt(0, 0, 0, 0).is_some()); + /// assert!(from_hmsn_opt(23, 59, 59, 999_999_999).is_some()); + /// assert!(from_hmsn_opt(23, 59, 59, 1_999_999_999).is_some()); // a leap second after 23:59:59 + /// assert!(from_hmsn_opt(24, 0, 0, 0).is_none()); + /// assert!(from_hmsn_opt(23, 60, 0, 0).is_none()); + /// assert!(from_hmsn_opt(23, 59, 60, 0).is_none()); + /// assert!(from_hmsn_opt(23, 59, 59, 2_000_000_000).is_none()); + /// ``` + #[inline] + pub fn from_hms_nano_opt(hour: u32, min: u32, sec: u32, nano: u32) -> Option { + if hour >= 24 || min >= 60 || sec >= 60 || nano >= 2_000_000_000 { + return None; + } + let secs = hour * 3600 + min * 60 + sec; + Some(NaiveTime { secs, frac: nano }) + } + + /// Makes a new `NaiveTime` from the number of seconds since midnight and nanosecond. + /// + /// The nanosecond part can exceed 1,000,000,000 + /// in order to represent the [leap second](#leap-second-handling). + /// + /// Panics on invalid number of seconds and/or nanosecond. + #[deprecated(since = "0.4.23", note = "use `from_num_seconds_from_midnight_opt()` instead")] + #[inline] + pub fn from_num_seconds_from_midnight(secs: u32, nano: u32) -> NaiveTime { + NaiveTime::from_num_seconds_from_midnight_opt(secs, nano).expect("invalid time") + } + + /// Makes a new `NaiveTime` from the number of seconds since midnight and nanosecond. + /// + /// The nanosecond part can exceed 1,000,000,000 + /// in order to represent the [leap second](#leap-second-handling). + /// + /// Returns `None` on invalid number of seconds and/or nanosecond. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveTime; + /// + /// let from_nsecs_opt = NaiveTime::from_num_seconds_from_midnight_opt; + /// + /// assert!(from_nsecs_opt(0, 0).is_some()); + /// assert!(from_nsecs_opt(86399, 999_999_999).is_some()); + /// assert!(from_nsecs_opt(86399, 1_999_999_999).is_some()); // a leap second after 23:59:59 + /// assert!(from_nsecs_opt(86_400, 0).is_none()); + /// assert!(from_nsecs_opt(86399, 2_000_000_000).is_none()); + /// ``` + #[inline] + pub fn from_num_seconds_from_midnight_opt(secs: u32, nano: u32) -> Option { + if secs >= 86_400 || nano >= 2_000_000_000 { + return None; + } + Some(NaiveTime { secs, frac: nano }) + } + + /// Parses a string with the specified format string and returns a new `NaiveTime`. + /// See the [`format::strftime` module](../format/strftime/index.html) + /// on the supported escape sequences. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveTime; + /// + /// let parse_from_str = NaiveTime::parse_from_str; + /// + /// assert_eq!(parse_from_str("23:56:04", "%H:%M:%S"), + /// Ok(NaiveTime::from_hms_opt(23, 56, 4).unwrap())); + /// assert_eq!(parse_from_str("pm012345.6789", "%p%I%M%S%.f"), + /// Ok(NaiveTime::from_hms_micro_opt(13, 23, 45, 678_900).unwrap())); + /// ``` + /// + /// Date and offset is ignored for the purpose of parsing. + /// + /// ``` + /// # use chrono::NaiveTime; + /// # let parse_from_str = NaiveTime::parse_from_str; + /// assert_eq!(parse_from_str("2014-5-17T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), + /// Ok(NaiveTime::from_hms_opt(12, 34, 56).unwrap())); + /// ``` + /// + /// [Leap seconds](#leap-second-handling) are correctly handled by + /// treating any time of the form `hh:mm:60` as a leap second. + /// (This equally applies to the formatting, so the round trip is possible.) + /// + /// ``` + /// # use chrono::NaiveTime; + /// # let parse_from_str = NaiveTime::parse_from_str; + /// assert_eq!(parse_from_str("08:59:60.123", "%H:%M:%S%.f"), + /// Ok(NaiveTime::from_hms_milli_opt(8, 59, 59, 1_123).unwrap())); + /// ``` + /// + /// Missing seconds are assumed to be zero, + /// but out-of-bound times or insufficient fields are errors otherwise. + /// + /// ``` + /// # use chrono::NaiveTime; + /// # let parse_from_str = NaiveTime::parse_from_str; + /// assert_eq!(parse_from_str("7:15", "%H:%M"), + /// Ok(NaiveTime::from_hms_opt(7, 15, 0).unwrap())); + /// + /// assert!(parse_from_str("04m33s", "%Mm%Ss").is_err()); + /// assert!(parse_from_str("12", "%H").is_err()); + /// assert!(parse_from_str("17:60", "%H:%M").is_err()); + /// assert!(parse_from_str("24:00:00", "%H:%M:%S").is_err()); + /// ``` + /// + /// All parsed fields should be consistent to each other, otherwise it's an error. + /// Here `%H` is for 24-hour clocks, unlike `%I`, + /// and thus can be independently determined without AM/PM. + /// + /// ``` + /// # use chrono::NaiveTime; + /// # let parse_from_str = NaiveTime::parse_from_str; + /// assert!(parse_from_str("13:07 AM", "%H:%M %p").is_err()); + /// ``` + pub fn parse_from_str(s: &str, fmt: &str) -> ParseResult { + let mut parsed = Parsed::new(); + parse(&mut parsed, s, StrftimeItems::new(fmt))?; + parsed.to_naive_time() + } + + /// Adds given `Duration` to the current time, + /// and also returns the number of *seconds* + /// in the integral number of days ignored from the addition. + /// (We cannot return `Duration` because it is subject to overflow or underflow.) + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveTime}; + /// + /// let from_hms = NaiveTime::from_hms; + /// + /// assert_eq!(from_hms(3, 4, 5).overflowing_add_signed(Duration::hours(11)), + /// (from_hms(14, 4, 5), 0)); + /// assert_eq!(from_hms(3, 4, 5).overflowing_add_signed(Duration::hours(23)), + /// (from_hms(2, 4, 5), 86_400)); + /// assert_eq!(from_hms(3, 4, 5).overflowing_add_signed(Duration::hours(-7)), + /// (from_hms(20, 4, 5), -86_400)); + /// ``` + pub fn overflowing_add_signed(&self, mut rhs: OldDuration) -> (NaiveTime, i64) { + let mut secs = self.secs; + let mut frac = self.frac; + + // check if `self` is a leap second and adding `rhs` would escape that leap second. + // if it's the case, update `self` and `rhs` to involve no leap second; + // otherwise the addition immediately finishes. + if frac >= 1_000_000_000 { + let rfrac = 2_000_000_000 - frac; + if rhs >= OldDuration::nanoseconds(i64::from(rfrac)) { + rhs = rhs - OldDuration::nanoseconds(i64::from(rfrac)); + secs += 1; + frac = 0; + } else if rhs < OldDuration::nanoseconds(-i64::from(frac)) { + rhs = rhs + OldDuration::nanoseconds(i64::from(frac)); + frac = 0; + } else { + frac = (i64::from(frac) + rhs.num_nanoseconds().unwrap()) as u32; + debug_assert!(frac < 2_000_000_000); + return (NaiveTime { secs, frac }, 0); + } + } + debug_assert!(secs <= 86_400); + debug_assert!(frac < 1_000_000_000); + + let rhssecs = rhs.num_seconds(); + let rhsfrac = (rhs - OldDuration::seconds(rhssecs)).num_nanoseconds().unwrap(); + debug_assert_eq!(OldDuration::seconds(rhssecs) + OldDuration::nanoseconds(rhsfrac), rhs); + let rhssecsinday = rhssecs % 86_400; + let mut morerhssecs = rhssecs - rhssecsinday; + let rhssecs = rhssecsinday as i32; + let rhsfrac = rhsfrac as i32; + debug_assert!(-86_400 < rhssecs && rhssecs < 86_400); + debug_assert_eq!(morerhssecs % 86_400, 0); + debug_assert!(-1_000_000_000 < rhsfrac && rhsfrac < 1_000_000_000); + + let mut secs = secs as i32 + rhssecs; + let mut frac = frac as i32 + rhsfrac; + debug_assert!(-86_400 < secs && secs < 2 * 86_400); + debug_assert!(-1_000_000_000 < frac && frac < 2_000_000_000); + + if frac < 0 { + frac += 1_000_000_000; + secs -= 1; + } else if frac >= 1_000_000_000 { + frac -= 1_000_000_000; + secs += 1; + } + debug_assert!((-86_400..2 * 86_400).contains(&secs)); + debug_assert!((0..1_000_000_000).contains(&frac)); + + if secs < 0 { + secs += 86_400; + morerhssecs -= 86_400; + } else if secs >= 86_400 { + secs -= 86_400; + morerhssecs += 86_400; + } + debug_assert!((0..86_400).contains(&secs)); + + (NaiveTime { secs: secs as u32, frac: frac as u32 }, morerhssecs) + } + + /// Subtracts given `Duration` from the current time, + /// and also returns the number of *seconds* + /// in the integral number of days ignored from the subtraction. + /// (We cannot return `Duration` because it is subject to overflow or underflow.) + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveTime}; + /// + /// let from_hms = NaiveTime::from_hms; + /// + /// assert_eq!(from_hms(3, 4, 5).overflowing_sub_signed(Duration::hours(2)), + /// (from_hms(1, 4, 5), 0)); + /// assert_eq!(from_hms(3, 4, 5).overflowing_sub_signed(Duration::hours(17)), + /// (from_hms(10, 4, 5), 86_400)); + /// assert_eq!(from_hms(3, 4, 5).overflowing_sub_signed(Duration::hours(-22)), + /// (from_hms(1, 4, 5), -86_400)); + /// ``` + #[inline] + pub fn overflowing_sub_signed(&self, rhs: OldDuration) -> (NaiveTime, i64) { + let (time, rhs) = self.overflowing_add_signed(-rhs); + (time, -rhs) // safe to negate, rhs is within +/- (2^63 / 1000) + } + + /// Subtracts another `NaiveTime` from the current time. + /// Returns a `Duration` within +/- 1 day. + /// This does not overflow or underflow at all. + /// + /// As a part of Chrono's [leap second handling](#leap-second-handling), + /// the subtraction assumes that **there is no leap second ever**, + /// except when any of the `NaiveTime`s themselves represents a leap second + /// in which case the assumption becomes that + /// **there are exactly one (or two) leap second(s) ever**. + /// + /// # Example + /// + /// ``` + /// use chrono::{Duration, NaiveTime}; + /// + /// let from_hmsm = NaiveTime::from_hms_milli; + /// let since = NaiveTime::signed_duration_since; + /// + /// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 5, 7, 900)), + /// Duration::zero()); + /// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 5, 7, 875)), + /// Duration::milliseconds(25)); + /// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 5, 6, 925)), + /// Duration::milliseconds(975)); + /// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 5, 0, 900)), + /// Duration::seconds(7)); + /// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(3, 0, 7, 900)), + /// Duration::seconds(5 * 60)); + /// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(0, 5, 7, 900)), + /// Duration::seconds(3 * 3600)); + /// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(4, 5, 7, 900)), + /// Duration::seconds(-3600)); + /// assert_eq!(since(from_hmsm(3, 5, 7, 900), from_hmsm(2, 4, 6, 800)), + /// Duration::seconds(3600 + 60 + 1) + Duration::milliseconds(100)); + /// ``` + /// + /// Leap seconds are handled, but the subtraction assumes that + /// there were no other leap seconds happened. + /// + /// ``` + /// # use chrono::{Duration, NaiveTime}; + /// # let from_hmsm = NaiveTime::from_hms_milli; + /// # let since = NaiveTime::signed_duration_since; + /// assert_eq!(since(from_hmsm(3, 0, 59, 1_000), from_hmsm(3, 0, 59, 0)), + /// Duration::seconds(1)); + /// assert_eq!(since(from_hmsm(3, 0, 59, 1_500), from_hmsm(3, 0, 59, 0)), + /// Duration::milliseconds(1500)); + /// assert_eq!(since(from_hmsm(3, 0, 59, 1_000), from_hmsm(3, 0, 0, 0)), + /// Duration::seconds(60)); + /// assert_eq!(since(from_hmsm(3, 0, 0, 0), from_hmsm(2, 59, 59, 1_000)), + /// Duration::seconds(1)); + /// assert_eq!(since(from_hmsm(3, 0, 59, 1_000), from_hmsm(2, 59, 59, 1_000)), + /// Duration::seconds(61)); + /// ``` + pub fn signed_duration_since(self, rhs: NaiveTime) -> OldDuration { + // | | :leap| | | | | | | :leap| | + // | | : | | | | | | | : | | + // ----+----+-----*---+----+----+----+----+----+----+-------*-+----+---- + // | `rhs` | | `self` + // |======================================>| | + // | | `self.secs - rhs.secs` |`self.frac` + // |====>| | |======>| + // `rhs.frac`|========================================>| + // | | | `self - rhs` | | + + use core::cmp::Ordering; + + let secs = i64::from(self.secs) - i64::from(rhs.secs); + let frac = i64::from(self.frac) - i64::from(rhs.frac); + + // `secs` may contain a leap second yet to be counted + let adjust = match self.secs.cmp(&rhs.secs) { + Ordering::Greater => i64::from(rhs.frac >= 1_000_000_000), + Ordering::Equal => 0, + Ordering::Less => { + if self.frac >= 1_000_000_000 { + -1 + } else { + 0 + } + } + }; + + OldDuration::seconds(secs + adjust) + OldDuration::nanoseconds(frac) + } + + /// Formats the time with the specified formatting items. + /// Otherwise it is the same as the ordinary [`format`](#method.format) method. + /// + /// The `Iterator` of items should be `Clone`able, + /// since the resulting `DelayedFormat` value may be formatted multiple times. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveTime; + /// use chrono::format::strftime::StrftimeItems; + /// + /// let fmt = StrftimeItems::new("%H:%M:%S"); + /// let t = NaiveTime::from_hms_opt(23, 56, 4).unwrap(); + /// assert_eq!(t.format_with_items(fmt.clone()).to_string(), "23:56:04"); + /// assert_eq!(t.format("%H:%M:%S").to_string(), "23:56:04"); + /// ``` + /// + /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. + /// + /// ``` + /// # use chrono::NaiveTime; + /// # use chrono::format::strftime::StrftimeItems; + /// # let fmt = StrftimeItems::new("%H:%M:%S").clone(); + /// # let t = NaiveTime::from_hms_opt(23, 56, 4).unwrap(); + /// assert_eq!(format!("{}", t.format_with_items(fmt)), "23:56:04"); + /// ``` + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format_with_items<'a, I, B>(&self, items: I) -> DelayedFormat + where + I: Iterator + Clone, + B: Borrow>, + { + DelayedFormat::new(None, Some(*self), items) + } + + /// Formats the time with the specified format string. + /// See the [`format::strftime` module](../format/strftime/index.html) + /// on the supported escape sequences. + /// + /// This returns a `DelayedFormat`, + /// which gets converted to a string only when actual formatting happens. + /// You may use the `to_string` method to get a `String`, + /// or just feed it into `print!` and other formatting macros. + /// (In this way it avoids the redundant memory allocation.) + /// + /// A wrong format string does *not* issue an error immediately. + /// Rather, converting or formatting the `DelayedFormat` fails. + /// You are recommended to immediately use `DelayedFormat` for this reason. + /// + /// # Example + /// + /// ``` + /// use chrono::NaiveTime; + /// + /// let t = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap(); + /// assert_eq!(t.format("%H:%M:%S").to_string(), "23:56:04"); + /// assert_eq!(t.format("%H:%M:%S%.6f").to_string(), "23:56:04.012345"); + /// assert_eq!(t.format("%-I:%M %p").to_string(), "11:56 PM"); + /// ``` + /// + /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. + /// + /// ``` + /// # use chrono::NaiveTime; + /// # let t = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap(); + /// assert_eq!(format!("{}", t.format("%H:%M:%S")), "23:56:04"); + /// assert_eq!(format!("{}", t.format("%H:%M:%S%.6f")), "23:56:04.012345"); + /// assert_eq!(format!("{}", t.format("%-I:%M %p")), "11:56 PM"); + /// ``` + #[cfg(any(feature = "alloc", feature = "std", test))] + #[cfg_attr(docsrs, doc(cfg(any(feature = "alloc", feature = "std"))))] + #[inline] + pub fn format<'a>(&self, fmt: &'a str) -> DelayedFormat> { + self.format_with_items(StrftimeItems::new(fmt)) + } + + /// Returns a triple of the hour, minute and second numbers. + fn hms(&self) -> (u32, u32, u32) { + let (mins, sec) = div_mod_floor(self.secs, 60); + let (hour, min) = div_mod_floor(mins, 60); + (hour, min, sec) + } + + /// The earliest possible `NaiveTime` + pub const MIN: Self = Self { secs: 0, frac: 0 }; + pub(super) const MAX: Self = Self { secs: 23 * 3600 + 59 * 60 + 59, frac: 999_999_999 }; +} + +impl Timelike for NaiveTime { + /// Returns the hour number from 0 to 23. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveTime, Timelike}; + /// + /// assert_eq!(NaiveTime::from_hms_opt(0, 0, 0).unwrap().hour(), 0); + /// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().hour(), 23); + /// ``` + #[inline] + fn hour(&self) -> u32 { + self.hms().0 + } + + /// Returns the minute number from 0 to 59. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveTime, Timelike}; + /// + /// assert_eq!(NaiveTime::from_hms_opt(0, 0, 0).unwrap().minute(), 0); + /// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().minute(), 56); + /// ``` + #[inline] + fn minute(&self) -> u32 { + self.hms().1 + } + + /// Returns the second number from 0 to 59. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveTime, Timelike}; + /// + /// assert_eq!(NaiveTime::from_hms_opt(0, 0, 0).unwrap().second(), 0); + /// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().second(), 4); + /// ``` + /// + /// This method never returns 60 even when it is a leap second. + /// ([Why?](#leap-second-handling)) + /// Use the proper [formatting method](#method.format) to get a human-readable representation. + /// + /// ``` + /// # use chrono::{NaiveTime, Timelike}; + /// let leap = NaiveTime::from_hms_milli_opt(23, 59, 59, 1_000).unwrap(); + /// assert_eq!(leap.second(), 59); + /// assert_eq!(leap.format("%H:%M:%S").to_string(), "23:59:60"); + /// ``` + #[inline] + fn second(&self) -> u32 { + self.hms().2 + } + + /// Returns the number of nanoseconds since the whole non-leap second. + /// The range from 1,000,000,000 to 1,999,999,999 represents + /// the [leap second](#leap-second-handling). + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveTime, Timelike}; + /// + /// assert_eq!(NaiveTime::from_hms_opt(0, 0, 0).unwrap().nanosecond(), 0); + /// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().nanosecond(), 12_345_678); + /// ``` + /// + /// Leap seconds may have seemingly out-of-range return values. + /// You can reduce the range with `time.nanosecond() % 1_000_000_000`, or + /// use the proper [formatting method](#method.format) to get a human-readable representation. + /// + /// ``` + /// # use chrono::{NaiveTime, Timelike}; + /// let leap = NaiveTime::from_hms_milli_opt(23, 59, 59, 1_000).unwrap(); + /// assert_eq!(leap.nanosecond(), 1_000_000_000); + /// assert_eq!(leap.format("%H:%M:%S%.9f").to_string(), "23:59:60.000000000"); + /// ``` + #[inline] + fn nanosecond(&self) -> u32 { + self.frac + } + + /// Makes a new `NaiveTime` with the hour number changed. + /// + /// Returns `None` when the resulting `NaiveTime` would be invalid. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveTime, Timelike}; + /// + /// let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap(); + /// assert_eq!(dt.with_hour(7), Some(NaiveTime::from_hms_nano_opt(7, 56, 4, 12_345_678).unwrap())); + /// assert_eq!(dt.with_hour(24), None); + /// ``` + #[inline] + fn with_hour(&self, hour: u32) -> Option { + if hour >= 24 { + return None; + } + let secs = hour * 3600 + self.secs % 3600; + Some(NaiveTime { secs, ..*self }) + } + + /// Makes a new `NaiveTime` with the minute number changed. + /// + /// Returns `None` when the resulting `NaiveTime` would be invalid. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveTime, Timelike}; + /// + /// let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap(); + /// assert_eq!(dt.with_minute(45), Some(NaiveTime::from_hms_nano_opt(23, 45, 4, 12_345_678).unwrap())); + /// assert_eq!(dt.with_minute(60), None); + /// ``` + #[inline] + fn with_minute(&self, min: u32) -> Option { + if min >= 60 { + return None; + } + let secs = self.secs / 3600 * 3600 + min * 60 + self.secs % 60; + Some(NaiveTime { secs, ..*self }) + } + + /// Makes a new `NaiveTime` with the second number changed. + /// + /// Returns `None` when the resulting `NaiveTime` would be invalid. + /// As with the [`second`](#method.second) method, + /// the input range is restricted to 0 through 59. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveTime, Timelike}; + /// + /// let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap(); + /// assert_eq!(dt.with_second(17), Some(NaiveTime::from_hms_nano_opt(23, 56, 17, 12_345_678).unwrap())); + /// assert_eq!(dt.with_second(60), None); + /// ``` + #[inline] + fn with_second(&self, sec: u32) -> Option { + if sec >= 60 { + return None; + } + let secs = self.secs / 60 * 60 + sec; + Some(NaiveTime { secs, ..*self }) + } + + /// Makes a new `NaiveTime` with nanoseconds since the whole non-leap second changed. + /// + /// Returns `None` when the resulting `NaiveTime` would be invalid. + /// As with the [`nanosecond`](#method.nanosecond) method, + /// the input range can exceed 1,000,000,000 for leap seconds. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveTime, Timelike}; + /// + /// let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap(); + /// assert_eq!(dt.with_nanosecond(333_333_333), + /// Some(NaiveTime::from_hms_nano_opt(23, 56, 4, 333_333_333).unwrap())); + /// assert_eq!(dt.with_nanosecond(2_000_000_000), None); + /// ``` + /// + /// Leap seconds can theoretically follow *any* whole second. + /// The following would be a proper leap second at the time zone offset of UTC-00:03:57 + /// (there are several historical examples comparable to this "non-sense" offset), + /// and therefore is allowed. + /// + /// ``` + /// # use chrono::{NaiveTime, Timelike}; + /// # let dt = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap(); + /// assert_eq!(dt.with_nanosecond(1_333_333_333), + /// Some(NaiveTime::from_hms_nano_opt(23, 56, 4, 1_333_333_333).unwrap())); + /// ``` + #[inline] + fn with_nanosecond(&self, nano: u32) -> Option { + if nano >= 2_000_000_000 { + return None; + } + Some(NaiveTime { frac: nano, ..*self }) + } + + /// Returns the number of non-leap seconds past the last midnight. + /// + /// # Example + /// + /// ``` + /// use chrono::{NaiveTime, Timelike}; + /// + /// assert_eq!(NaiveTime::from_hms_opt(1, 2, 3).unwrap().num_seconds_from_midnight(), + /// 3723); + /// assert_eq!(NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap().num_seconds_from_midnight(), + /// 86164); + /// assert_eq!(NaiveTime::from_hms_milli_opt(23, 59, 59, 1_000).unwrap().num_seconds_from_midnight(), + /// 86399); + /// ``` + #[inline] + fn num_seconds_from_midnight(&self) -> u32 { + self.secs // do not repeat the calculation! + } +} + +/// An addition of `Duration` to `NaiveTime` wraps around and never overflows or underflows. +/// In particular the addition ignores integral number of days. +/// +/// As a part of Chrono's [leap second handling](#leap-second-handling), +/// the addition assumes that **there is no leap second ever**, +/// except when the `NaiveTime` itself represents a leap second +/// in which case the assumption becomes that **there is exactly a single leap second ever**. +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveTime}; +/// +/// let from_hmsm = NaiveTime::from_hms_milli; +/// +/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::zero(), from_hmsm(3, 5, 7, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(1), from_hmsm(3, 5, 8, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(-1), from_hmsm(3, 5, 6, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(60 + 4), from_hmsm(3, 6, 11, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(7*60*60 - 6*60), from_hmsm(9, 59, 7, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::milliseconds(80), from_hmsm(3, 5, 7, 80)); +/// assert_eq!(from_hmsm(3, 5, 7, 950) + Duration::milliseconds(280), from_hmsm(3, 5, 8, 230)); +/// assert_eq!(from_hmsm(3, 5, 7, 950) + Duration::milliseconds(-980), from_hmsm(3, 5, 6, 970)); +/// ``` +/// +/// The addition wraps around. +/// +/// ``` +/// # use chrono::{Duration, NaiveTime}; +/// # let from_hmsm = NaiveTime::from_hms_milli; +/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(22*60*60), from_hmsm(1, 5, 7, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(-8*60*60), from_hmsm(19, 5, 7, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::days(800), from_hmsm(3, 5, 7, 0)); +/// ``` +/// +/// Leap seconds are handled, but the addition assumes that it is the only leap second happened. +/// +/// ``` +/// # use chrono::{Duration, NaiveTime}; +/// # let from_hmsm = NaiveTime::from_hms_milli; +/// let leap = from_hmsm(3, 5, 59, 1_300); +/// assert_eq!(leap + Duration::zero(), from_hmsm(3, 5, 59, 1_300)); +/// assert_eq!(leap + Duration::milliseconds(-500), from_hmsm(3, 5, 59, 800)); +/// assert_eq!(leap + Duration::milliseconds(500), from_hmsm(3, 5, 59, 1_800)); +/// assert_eq!(leap + Duration::milliseconds(800), from_hmsm(3, 6, 0, 100)); +/// assert_eq!(leap + Duration::seconds(10), from_hmsm(3, 6, 9, 300)); +/// assert_eq!(leap + Duration::seconds(-10), from_hmsm(3, 5, 50, 300)); +/// assert_eq!(leap + Duration::days(1), from_hmsm(3, 5, 59, 300)); +/// ``` +impl Add for NaiveTime { + type Output = NaiveTime; + + #[inline] + fn add(self, rhs: OldDuration) -> NaiveTime { + self.overflowing_add_signed(rhs).0 + } +} + +impl AddAssign for NaiveTime { + #[inline] + fn add_assign(&mut self, rhs: OldDuration) { + *self = self.add(rhs); + } +} + +/// A subtraction of `Duration` from `NaiveTime` wraps around and never overflows or underflows. +/// In particular the addition ignores integral number of days. +/// It is the same as the addition with a negated `Duration`. +/// +/// As a part of Chrono's [leap second handling](#leap-second-handling), +/// the addition assumes that **there is no leap second ever**, +/// except when the `NaiveTime` itself represents a leap second +/// in which case the assumption becomes that **there is exactly a single leap second ever**. +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveTime}; +/// +/// let from_hmsm = NaiveTime::from_hms_milli; +/// +/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::zero(), from_hmsm(3, 5, 7, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(1), from_hmsm(3, 5, 6, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(60 + 5), from_hmsm(3, 4, 2, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(2*60*60 + 6*60), from_hmsm(0, 59, 7, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::milliseconds(80), from_hmsm(3, 5, 6, 920)); +/// assert_eq!(from_hmsm(3, 5, 7, 950) - Duration::milliseconds(280), from_hmsm(3, 5, 7, 670)); +/// ``` +/// +/// The subtraction wraps around. +/// +/// ``` +/// # use chrono::{Duration, NaiveTime}; +/// # let from_hmsm = NaiveTime::from_hms_milli; +/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(8*60*60), from_hmsm(19, 5, 7, 0)); +/// assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::days(800), from_hmsm(3, 5, 7, 0)); +/// ``` +/// +/// Leap seconds are handled, but the subtraction assumes that it is the only leap second happened. +/// +/// ``` +/// # use chrono::{Duration, NaiveTime}; +/// # let from_hmsm = NaiveTime::from_hms_milli; +/// let leap = from_hmsm(3, 5, 59, 1_300); +/// assert_eq!(leap - Duration::zero(), from_hmsm(3, 5, 59, 1_300)); +/// assert_eq!(leap - Duration::milliseconds(200), from_hmsm(3, 5, 59, 1_100)); +/// assert_eq!(leap - Duration::milliseconds(500), from_hmsm(3, 5, 59, 800)); +/// assert_eq!(leap - Duration::seconds(60), from_hmsm(3, 5, 0, 300)); +/// assert_eq!(leap - Duration::days(1), from_hmsm(3, 6, 0, 300)); +/// ``` +impl Sub for NaiveTime { + type Output = NaiveTime; + + #[inline] + fn sub(self, rhs: OldDuration) -> NaiveTime { + self.overflowing_sub_signed(rhs).0 + } +} + +impl SubAssign for NaiveTime { + #[inline] + fn sub_assign(&mut self, rhs: OldDuration) { + *self = self.sub(rhs); + } +} + +/// Subtracts another `NaiveTime` from the current time. +/// Returns a `Duration` within +/- 1 day. +/// This does not overflow or underflow at all. +/// +/// As a part of Chrono's [leap second handling](#leap-second-handling), +/// the subtraction assumes that **there is no leap second ever**, +/// except when any of the `NaiveTime`s themselves represents a leap second +/// in which case the assumption becomes that +/// **there are exactly one (or two) leap second(s) ever**. +/// +/// The implementation is a wrapper around +/// [`NaiveTime::signed_duration_since`](#method.signed_duration_since). +/// +/// # Example +/// +/// ``` +/// use chrono::{Duration, NaiveTime}; +/// +/// let from_hmsm = NaiveTime::from_hms_milli; +/// +/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 7, 900), Duration::zero()); +/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 7, 875), Duration::milliseconds(25)); +/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 6, 925), Duration::milliseconds(975)); +/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 0, 900), Duration::seconds(7)); +/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 0, 7, 900), Duration::seconds(5 * 60)); +/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(0, 5, 7, 900), Duration::seconds(3 * 3600)); +/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(4, 5, 7, 900), Duration::seconds(-3600)); +/// assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(2, 4, 6, 800), +/// Duration::seconds(3600 + 60 + 1) + Duration::milliseconds(100)); +/// ``` +/// +/// Leap seconds are handled, but the subtraction assumes that +/// there were no other leap seconds happened. +/// +/// ``` +/// # use chrono::{Duration, NaiveTime}; +/// # let from_hmsm = NaiveTime::from_hms_milli; +/// assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(3, 0, 59, 0), Duration::seconds(1)); +/// assert_eq!(from_hmsm(3, 0, 59, 1_500) - from_hmsm(3, 0, 59, 0), +/// Duration::milliseconds(1500)); +/// assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(3, 0, 0, 0), Duration::seconds(60)); +/// assert_eq!(from_hmsm(3, 0, 0, 0) - from_hmsm(2, 59, 59, 1_000), Duration::seconds(1)); +/// assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(2, 59, 59, 1_000), +/// Duration::seconds(61)); +/// ``` +impl Sub for NaiveTime { + type Output = OldDuration; + + #[inline] + fn sub(self, rhs: NaiveTime) -> OldDuration { + self.signed_duration_since(rhs) + } +} + +/// The `Debug` output of the naive time `t` is the same as +/// [`t.format("%H:%M:%S%.f")`](../format/strftime/index.html). +/// +/// The string printed can be readily parsed via the `parse` method on `str`. +/// +/// It should be noted that, for leap seconds not on the minute boundary, +/// it may print a representation not distinguishable from non-leap seconds. +/// This doesn't matter in practice, since such leap seconds never happened. +/// (By the time of the first leap second on 1972-06-30, +/// every time zone offset around the world has standardized to the 5-minute alignment.) +/// +/// # Example +/// +/// ``` +/// use chrono::NaiveTime; +/// +/// assert_eq!(format!("{:?}", NaiveTime::from_hms_opt(23, 56, 4).unwrap()), "23:56:04"); +/// assert_eq!(format!("{:?}", NaiveTime::from_hms_milli_opt(23, 56, 4, 12).unwrap()), "23:56:04.012"); +/// assert_eq!(format!("{:?}", NaiveTime::from_hms_micro_opt(23, 56, 4, 1234).unwrap()), "23:56:04.001234"); +/// assert_eq!(format!("{:?}", NaiveTime::from_hms_nano_opt(23, 56, 4, 123456).unwrap()), "23:56:04.000123456"); +/// ``` +/// +/// Leap seconds may also be used. +/// +/// ``` +/// # use chrono::NaiveTime; +/// assert_eq!(format!("{:?}", NaiveTime::from_hms_milli_opt(6, 59, 59, 1_500).unwrap()), "06:59:60.500"); +/// ``` +impl fmt::Debug for NaiveTime { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + let (hour, min, sec) = self.hms(); + let (sec, nano) = if self.frac >= 1_000_000_000 { + (sec + 1, self.frac - 1_000_000_000) + } else { + (sec, self.frac) + }; + + use core::fmt::Write; + write_hundreds(f, hour as u8)?; + f.write_char(':')?; + write_hundreds(f, min as u8)?; + f.write_char(':')?; + write_hundreds(f, sec as u8)?; + + if nano == 0 { + Ok(()) + } else if nano % 1_000_000 == 0 { + write!(f, ".{:03}", nano / 1_000_000) + } else if nano % 1_000 == 0 { + write!(f, ".{:06}", nano / 1_000) + } else { + write!(f, ".{:09}", nano) + } + } +} + +/// The `Display` output of the naive time `t` is the same as +/// [`t.format("%H:%M:%S%.f")`](../format/strftime/index.html). +/// +/// The string printed can be readily parsed via the `parse` method on `str`. +/// +/// It should be noted that, for leap seconds not on the minute boundary, +/// it may print a representation not distinguishable from non-leap seconds. +/// This doesn't matter in practice, since such leap seconds never happened. +/// (By the time of the first leap second on 1972-06-30, +/// every time zone offset around the world has standardized to the 5-minute alignment.) +/// +/// # Example +/// +/// ``` +/// use chrono::NaiveTime; +/// +/// assert_eq!(format!("{}", NaiveTime::from_hms_opt(23, 56, 4).unwrap()), "23:56:04"); +/// assert_eq!(format!("{}", NaiveTime::from_hms_milli_opt(23, 56, 4, 12).unwrap()), "23:56:04.012"); +/// assert_eq!(format!("{}", NaiveTime::from_hms_micro_opt(23, 56, 4, 1234).unwrap()), "23:56:04.001234"); +/// assert_eq!(format!("{}", NaiveTime::from_hms_nano_opt(23, 56, 4, 123456).unwrap()), "23:56:04.000123456"); +/// ``` +/// +/// Leap seconds may also be used. +/// +/// ``` +/// # use chrono::NaiveTime; +/// assert_eq!(format!("{}", NaiveTime::from_hms_milli_opt(6, 59, 59, 1_500).unwrap()), "06:59:60.500"); +/// ``` +impl fmt::Display for NaiveTime { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + fmt::Debug::fmt(self, f) + } +} + +/// Parsing a `str` into a `NaiveTime` uses the same format, +/// [`%H:%M:%S%.f`](../format/strftime/index.html), as in `Debug` and `Display`. +/// +/// # Example +/// +/// ``` +/// use chrono::NaiveTime; +/// +/// let t = NaiveTime::from_hms_opt(23, 56, 4).unwrap(); +/// assert_eq!("23:56:04".parse::(), Ok(t)); +/// +/// let t = NaiveTime::from_hms_nano_opt(23, 56, 4, 12_345_678).unwrap(); +/// assert_eq!("23:56:4.012345678".parse::(), Ok(t)); +/// +/// let t = NaiveTime::from_hms_nano_opt(23, 59, 59, 1_234_567_890).unwrap(); // leap second +/// assert_eq!("23:59:60.23456789".parse::(), Ok(t)); +/// +/// assert!("foo".parse::().is_err()); +/// ``` +impl str::FromStr for NaiveTime { + type Err = ParseError; + + fn from_str(s: &str) -> ParseResult { + const ITEMS: &[Item<'static>] = &[ + Item::Numeric(Numeric::Hour, Pad::Zero), + Item::Space(""), + Item::Literal(":"), + Item::Numeric(Numeric::Minute, Pad::Zero), + Item::Space(""), + Item::Literal(":"), + Item::Numeric(Numeric::Second, Pad::Zero), + Item::Fixed(Fixed::Nanosecond), + Item::Space(""), + ]; + + let mut parsed = Parsed::new(); + parse(&mut parsed, s, ITEMS.iter())?; + parsed.to_naive_time() + } +} + +/// The default value for a NaiveTime is midnight, 00:00:00 exactly. +/// +/// # Example +/// +/// ```rust +/// use chrono::NaiveTime; +/// +/// let default_time = NaiveTime::default(); +/// assert_eq!(default_time, NaiveTime::from_hms_opt(0, 0, 0).unwrap()); +/// ``` +impl Default for NaiveTime { + fn default() -> Self { + NaiveTime::from_hms_opt(0, 0, 0).unwrap() + } +} + +#[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))] +fn test_encodable_json(to_string: F) +where + F: Fn(&NaiveTime) -> Result, + E: ::std::fmt::Debug, +{ + assert_eq!( + to_string(&NaiveTime::from_hms_opt(0, 0, 0).unwrap()).ok(), + Some(r#""00:00:00""#.into()) + ); + assert_eq!( + to_string(&NaiveTime::from_hms_milli_opt(0, 0, 0, 950).unwrap()).ok(), + Some(r#""00:00:00.950""#.into()) + ); + assert_eq!( + to_string(&NaiveTime::from_hms_milli_opt(0, 0, 59, 1_000).unwrap()).ok(), + Some(r#""00:00:60""#.into()) + ); + assert_eq!( + to_string(&NaiveTime::from_hms_opt(0, 1, 2).unwrap()).ok(), + Some(r#""00:01:02""#.into()) + ); + assert_eq!( + to_string(&NaiveTime::from_hms_nano_opt(3, 5, 7, 98765432).unwrap()).ok(), + Some(r#""03:05:07.098765432""#.into()) + ); + assert_eq!( + to_string(&NaiveTime::from_hms_opt(7, 8, 9).unwrap()).ok(), + Some(r#""07:08:09""#.into()) + ); + assert_eq!( + to_string(&NaiveTime::from_hms_micro_opt(12, 34, 56, 789).unwrap()).ok(), + Some(r#""12:34:56.000789""#.into()) + ); + assert_eq!( + to_string(&NaiveTime::from_hms_nano_opt(23, 59, 59, 1_999_999_999).unwrap()).ok(), + Some(r#""23:59:60.999999999""#.into()) + ); +} + +#[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))] +fn test_decodable_json(from_str: F) +where + F: Fn(&str) -> Result, + E: ::std::fmt::Debug, +{ + assert_eq!(from_str(r#""00:00:00""#).ok(), Some(NaiveTime::from_hms_opt(0, 0, 0).unwrap())); + assert_eq!(from_str(r#""0:0:0""#).ok(), Some(NaiveTime::from_hms_opt(0, 0, 0).unwrap())); + assert_eq!( + from_str(r#""00:00:00.950""#).ok(), + Some(NaiveTime::from_hms_milli_opt(0, 0, 0, 950).unwrap()) + ); + assert_eq!( + from_str(r#""0:0:0.95""#).ok(), + Some(NaiveTime::from_hms_milli_opt(0, 0, 0, 950).unwrap()) + ); + assert_eq!( + from_str(r#""00:00:60""#).ok(), + Some(NaiveTime::from_hms_milli_opt(0, 0, 59, 1_000).unwrap()) + ); + assert_eq!(from_str(r#""00:01:02""#).ok(), Some(NaiveTime::from_hms_opt(0, 1, 2).unwrap())); + assert_eq!( + from_str(r#""03:05:07.098765432""#).ok(), + Some(NaiveTime::from_hms_nano_opt(3, 5, 7, 98765432).unwrap()) + ); + assert_eq!(from_str(r#""07:08:09""#).ok(), Some(NaiveTime::from_hms_opt(7, 8, 9).unwrap())); + assert_eq!( + from_str(r#""12:34:56.000789""#).ok(), + Some(NaiveTime::from_hms_micro_opt(12, 34, 56, 789).unwrap()) + ); + assert_eq!( + from_str(r#""23:59:60.999999999""#).ok(), + Some(NaiveTime::from_hms_nano_opt(23, 59, 59, 1_999_999_999).unwrap()) + ); + assert_eq!( + from_str(r#""23:59:60.9999999999997""#).ok(), // excess digits are ignored + Some(NaiveTime::from_hms_nano_opt(23, 59, 59, 1_999_999_999).unwrap()) + ); + + // bad formats + assert!(from_str(r#""""#).is_err()); + assert!(from_str(r#""000000""#).is_err()); + assert!(from_str(r#""00:00:61""#).is_err()); + assert!(from_str(r#""00:60:00""#).is_err()); + assert!(from_str(r#""24:00:00""#).is_err()); + assert!(from_str(r#""23:59:59,1""#).is_err()); + assert!(from_str(r#""012:34:56""#).is_err()); + assert!(from_str(r#""hh:mm:ss""#).is_err()); + assert!(from_str(r#"0"#).is_err()); + assert!(from_str(r#"86399"#).is_err()); + assert!(from_str(r#"{}"#).is_err()); + // pre-0.3.0 rustc-serialize format is now invalid + assert!(from_str(r#"{"secs":0,"frac":0}"#).is_err()); + assert!(from_str(r#"null"#).is_err()); +} diff --git a/javascript-engine/external/chrono/src/naive/time/rustc_serialize.rs b/javascript-engine/external/chrono/src/naive/time/rustc_serialize.rs new file mode 100644 index 0000000..9eaf682 --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/time/rustc_serialize.rs @@ -0,0 +1,29 @@ +#![cfg_attr(docsrs, doc(cfg(feature = "rustc-serialize")))] + +use super::NaiveTime; +use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; + +impl Encodable for NaiveTime { + fn encode(&self, s: &mut S) -> Result<(), S::Error> { + format!("{:?}", self).encode(s) + } +} + +impl Decodable for NaiveTime { + fn decode(d: &mut D) -> Result { + d.read_str()?.parse().map_err(|_| d.error("invalid time")) + } +} + +#[cfg(test)] +use rustc_serialize::json; + +#[test] +fn test_encodable() { + super::test_encodable_json(json::encode); +} + +#[test] +fn test_decodable() { + super::test_decodable_json(json::decode); +} diff --git a/javascript-engine/external/chrono/src/naive/time/serde.rs b/javascript-engine/external/chrono/src/naive/time/serde.rs new file mode 100644 index 0000000..c7394fb --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/time/serde.rs @@ -0,0 +1,65 @@ +#![cfg_attr(docsrs, doc(cfg(feature = "serde")))] + +use super::NaiveTime; +use core::fmt; +use serde::{de, ser}; + +// TODO not very optimized for space (binary formats would want something better) +// TODO round-trip for general leap seconds (not just those with second = 60) + +impl ser::Serialize for NaiveTime { + fn serialize(&self, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.collect_str(&self) + } +} + +struct NaiveTimeVisitor; + +impl<'de> de::Visitor<'de> for NaiveTimeVisitor { + type Value = NaiveTime; + + fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + formatter.write_str("a formatted time string") + } + + fn visit_str(self, value: &str) -> Result + where + E: de::Error, + { + value.parse().map_err(E::custom) + } +} + +impl<'de> de::Deserialize<'de> for NaiveTime { + fn deserialize(deserializer: D) -> Result + where + D: de::Deserializer<'de>, + { + deserializer.deserialize_str(NaiveTimeVisitor) + } +} + +#[test] +fn test_serde_serialize() { + super::test_encodable_json(serde_json::to_string); +} + +#[test] +fn test_serde_deserialize() { + super::test_decodable_json(|input| serde_json::from_str(input)); +} + +#[test] +fn test_serde_bincode() { + // Bincode is relevant to test separately from JSON because + // it is not self-describing. + use bincode::{deserialize, serialize}; + + let t = NaiveTime::from_hms_nano_opt(3, 5, 7, 98765432).unwrap(); + let encoded = serialize(&t).unwrap(); + let decoded: NaiveTime = deserialize(&encoded).unwrap(); + assert_eq!(t, decoded); +} diff --git a/javascript-engine/external/chrono/src/naive/time/tests.rs b/javascript-engine/external/chrono/src/naive/time/tests.rs new file mode 100644 index 0000000..62c46a2 --- /dev/null +++ b/javascript-engine/external/chrono/src/naive/time/tests.rs @@ -0,0 +1,317 @@ +use super::NaiveTime; +use crate::oldtime::Duration; +use crate::Timelike; +use std::u32; + +#[test] +fn test_time_from_hms_milli() { + assert_eq!( + NaiveTime::from_hms_milli_opt(3, 5, 7, 0), + Some(NaiveTime::from_hms_nano_opt(3, 5, 7, 0).unwrap()) + ); + assert_eq!( + NaiveTime::from_hms_milli_opt(3, 5, 7, 777), + Some(NaiveTime::from_hms_nano_opt(3, 5, 7, 777_000_000).unwrap()) + ); + assert_eq!( + NaiveTime::from_hms_milli_opt(3, 5, 7, 1_999), + Some(NaiveTime::from_hms_nano_opt(3, 5, 7, 1_999_000_000).unwrap()) + ); + assert_eq!(NaiveTime::from_hms_milli_opt(3, 5, 7, 2_000), None); + assert_eq!(NaiveTime::from_hms_milli_opt(3, 5, 7, 5_000), None); // overflow check + assert_eq!(NaiveTime::from_hms_milli_opt(3, 5, 7, u32::MAX), None); +} + +#[test] +fn test_time_from_hms_micro() { + assert_eq!( + NaiveTime::from_hms_micro_opt(3, 5, 7, 0), + Some(NaiveTime::from_hms_nano_opt(3, 5, 7, 0).unwrap()) + ); + assert_eq!( + NaiveTime::from_hms_micro_opt(3, 5, 7, 333), + Some(NaiveTime::from_hms_nano_opt(3, 5, 7, 333_000).unwrap()) + ); + assert_eq!( + NaiveTime::from_hms_micro_opt(3, 5, 7, 777_777), + Some(NaiveTime::from_hms_nano_opt(3, 5, 7, 777_777_000).unwrap()) + ); + assert_eq!( + NaiveTime::from_hms_micro_opt(3, 5, 7, 1_999_999), + Some(NaiveTime::from_hms_nano_opt(3, 5, 7, 1_999_999_000).unwrap()) + ); + assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, 2_000_000), None); + assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, 5_000_000), None); // overflow check + assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, u32::MAX), None); +} + +#[test] +fn test_time_hms() { + assert_eq!(NaiveTime::from_hms_opt(3, 5, 7).unwrap().hour(), 3); + assert_eq!( + NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_hour(0), + Some(NaiveTime::from_hms_opt(0, 5, 7).unwrap()) + ); + assert_eq!( + NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_hour(23), + Some(NaiveTime::from_hms_opt(23, 5, 7).unwrap()) + ); + assert_eq!(NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_hour(24), None); + assert_eq!(NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_hour(u32::MAX), None); + + assert_eq!(NaiveTime::from_hms_opt(3, 5, 7).unwrap().minute(), 5); + assert_eq!( + NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_minute(0), + Some(NaiveTime::from_hms_opt(3, 0, 7).unwrap()) + ); + assert_eq!( + NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_minute(59), + Some(NaiveTime::from_hms_opt(3, 59, 7).unwrap()) + ); + assert_eq!(NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_minute(60), None); + assert_eq!(NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_minute(u32::MAX), None); + + assert_eq!(NaiveTime::from_hms_opt(3, 5, 7).unwrap().second(), 7); + assert_eq!( + NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_second(0), + Some(NaiveTime::from_hms_opt(3, 5, 0).unwrap()) + ); + assert_eq!( + NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_second(59), + Some(NaiveTime::from_hms_opt(3, 5, 59).unwrap()) + ); + assert_eq!(NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_second(60), None); + assert_eq!(NaiveTime::from_hms_opt(3, 5, 7).unwrap().with_second(u32::MAX), None); +} + +#[test] +fn test_time_add() { + macro_rules! check { + ($lhs:expr, $rhs:expr, $sum:expr) => {{ + assert_eq!($lhs + $rhs, $sum); + //assert_eq!($rhs + $lhs, $sum); + }}; + } + + let hmsm = |h, m, s, ms| NaiveTime::from_hms_milli_opt(h, m, s, ms).unwrap(); + + check!(hmsm(3, 5, 7, 900), Duration::zero(), hmsm(3, 5, 7, 900)); + check!(hmsm(3, 5, 7, 900), Duration::milliseconds(100), hmsm(3, 5, 8, 0)); + check!(hmsm(3, 5, 7, 1_300), Duration::milliseconds(-1800), hmsm(3, 5, 6, 500)); + check!(hmsm(3, 5, 7, 1_300), Duration::milliseconds(-800), hmsm(3, 5, 7, 500)); + check!(hmsm(3, 5, 7, 1_300), Duration::milliseconds(-100), hmsm(3, 5, 7, 1_200)); + check!(hmsm(3, 5, 7, 1_300), Duration::milliseconds(100), hmsm(3, 5, 7, 1_400)); + check!(hmsm(3, 5, 7, 1_300), Duration::milliseconds(800), hmsm(3, 5, 8, 100)); + check!(hmsm(3, 5, 7, 1_300), Duration::milliseconds(1800), hmsm(3, 5, 9, 100)); + check!(hmsm(3, 5, 7, 900), Duration::seconds(86399), hmsm(3, 5, 6, 900)); // overwrap + check!(hmsm(3, 5, 7, 900), Duration::seconds(-86399), hmsm(3, 5, 8, 900)); + check!(hmsm(3, 5, 7, 900), Duration::days(12345), hmsm(3, 5, 7, 900)); + check!(hmsm(3, 5, 7, 1_300), Duration::days(1), hmsm(3, 5, 7, 300)); + check!(hmsm(3, 5, 7, 1_300), Duration::days(-1), hmsm(3, 5, 8, 300)); + + // regression tests for #37 + check!(hmsm(0, 0, 0, 0), Duration::milliseconds(-990), hmsm(23, 59, 59, 10)); + check!(hmsm(0, 0, 0, 0), Duration::milliseconds(-9990), hmsm(23, 59, 50, 10)); +} + +#[test] +fn test_time_overflowing_add() { + let hmsm = |h, m, s, ms| NaiveTime::from_hms_milli_opt(h, m, s, ms).unwrap(); + + assert_eq!( + hmsm(3, 4, 5, 678).overflowing_add_signed(Duration::hours(11)), + (hmsm(14, 4, 5, 678), 0) + ); + assert_eq!( + hmsm(3, 4, 5, 678).overflowing_add_signed(Duration::hours(23)), + (hmsm(2, 4, 5, 678), 86_400) + ); + assert_eq!( + hmsm(3, 4, 5, 678).overflowing_add_signed(Duration::hours(-7)), + (hmsm(20, 4, 5, 678), -86_400) + ); + + // overflowing_add_signed with leap seconds may be counter-intuitive + assert_eq!( + hmsm(3, 4, 5, 1_678).overflowing_add_signed(Duration::days(1)), + (hmsm(3, 4, 5, 678), 86_400) + ); + assert_eq!( + hmsm(3, 4, 5, 1_678).overflowing_add_signed(Duration::days(-1)), + (hmsm(3, 4, 6, 678), -86_400) + ); +} + +#[test] +fn test_time_addassignment() { + let hms = |h, m, s| NaiveTime::from_hms_opt(h, m, s).unwrap(); + let mut time = hms(12, 12, 12); + time += Duration::hours(10); + assert_eq!(time, hms(22, 12, 12)); + time += Duration::hours(10); + assert_eq!(time, hms(8, 12, 12)); +} + +#[test] +fn test_time_subassignment() { + let hms = |h, m, s| NaiveTime::from_hms_opt(h, m, s).unwrap(); + let mut time = hms(12, 12, 12); + time -= Duration::hours(10); + assert_eq!(time, hms(2, 12, 12)); + time -= Duration::hours(10); + assert_eq!(time, hms(16, 12, 12)); +} + +#[test] +fn test_time_sub() { + macro_rules! check { + ($lhs:expr, $rhs:expr, $diff:expr) => {{ + // `time1 - time2 = duration` is equivalent to `time2 - time1 = -duration` + assert_eq!($lhs.signed_duration_since($rhs), $diff); + assert_eq!($rhs.signed_duration_since($lhs), -$diff); + }}; + } + + let hmsm = |h, m, s, ms| NaiveTime::from_hms_milli_opt(h, m, s, ms).unwrap(); + + check!(hmsm(3, 5, 7, 900), hmsm(3, 5, 7, 900), Duration::zero()); + check!(hmsm(3, 5, 7, 900), hmsm(3, 5, 7, 600), Duration::milliseconds(300)); + check!(hmsm(3, 5, 7, 200), hmsm(2, 4, 6, 200), Duration::seconds(3600 + 60 + 1)); + check!( + hmsm(3, 5, 7, 200), + hmsm(2, 4, 6, 300), + Duration::seconds(3600 + 60) + Duration::milliseconds(900) + ); + + // treats the leap second as if it coincides with the prior non-leap second, + // as required by `time1 - time2 = duration` and `time2 - time1 = -duration` equivalence. + check!(hmsm(3, 5, 7, 200), hmsm(3, 5, 6, 1_800), Duration::milliseconds(400)); + check!(hmsm(3, 5, 7, 1_200), hmsm(3, 5, 6, 1_800), Duration::milliseconds(1400)); + check!(hmsm(3, 5, 7, 1_200), hmsm(3, 5, 6, 800), Duration::milliseconds(1400)); + + // additional equality: `time1 + duration = time2` is equivalent to + // `time2 - time1 = duration` IF AND ONLY IF `time2` represents a non-leap second. + assert_eq!(hmsm(3, 5, 6, 800) + Duration::milliseconds(400), hmsm(3, 5, 7, 200)); + assert_eq!(hmsm(3, 5, 6, 1_800) + Duration::milliseconds(400), hmsm(3, 5, 7, 200)); +} + +#[test] +fn test_time_fmt() { + assert_eq!( + format!("{}", NaiveTime::from_hms_milli_opt(23, 59, 59, 999).unwrap()), + "23:59:59.999" + ); + assert_eq!( + format!("{}", NaiveTime::from_hms_milli_opt(23, 59, 59, 1_000).unwrap()), + "23:59:60" + ); + assert_eq!( + format!("{}", NaiveTime::from_hms_milli_opt(23, 59, 59, 1_001).unwrap()), + "23:59:60.001" + ); + assert_eq!( + format!("{}", NaiveTime::from_hms_micro_opt(0, 0, 0, 43210).unwrap()), + "00:00:00.043210" + ); + assert_eq!( + format!("{}", NaiveTime::from_hms_nano_opt(0, 0, 0, 6543210).unwrap()), + "00:00:00.006543210" + ); + + // the format specifier should have no effect on `NaiveTime` + assert_eq!( + format!("{:30}", NaiveTime::from_hms_milli_opt(3, 5, 7, 9).unwrap()), + "03:05:07.009" + ); +} + +#[test] +fn test_date_from_str() { + // valid cases + let valid = [ + "0:0:0", + "0:0:0.0000000", + "0:0:0.0000003", + " 4 : 3 : 2.1 ", + " 09:08:07 ", + " 9:8:07 ", + "23:59:60.373929310237", + ]; + for &s in &valid { + let d = match s.parse::() { + Ok(d) => d, + Err(e) => panic!("parsing `{}` has failed: {}", s, e), + }; + let s_ = format!("{:?}", d); + // `s` and `s_` may differ, but `s.parse()` and `s_.parse()` must be same + let d_ = match s_.parse::() { + Ok(d) => d, + Err(e) => { + panic!("`{}` is parsed into `{:?}`, but reparsing that has failed: {}", s, d, e) + } + }; + assert!( + d == d_, + "`{}` is parsed into `{:?}`, but reparsed result \ + `{:?}` does not match", + s, + d, + d_ + ); + } + + // some invalid cases + // since `ParseErrorKind` is private, all we can do is to check if there was an error + assert!("".parse::().is_err()); + assert!("x".parse::().is_err()); + assert!("15".parse::().is_err()); + assert!("15:8".parse::().is_err()); + assert!("15:8:x".parse::().is_err()); + assert!("15:8:9x".parse::().is_err()); + assert!("23:59:61".parse::().is_err()); + assert!("12:34:56.x".parse::().is_err()); + assert!("12:34:56. 0".parse::().is_err()); +} + +#[test] +fn test_time_parse_from_str() { + let hms = |h, m, s| NaiveTime::from_hms_opt(h, m, s).unwrap(); + assert_eq!( + NaiveTime::parse_from_str("2014-5-7T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), + Ok(hms(12, 34, 56)) + ); // ignore date and offset + assert_eq!(NaiveTime::parse_from_str("PM 12:59", "%P %H:%M"), Ok(hms(12, 59, 0))); + assert!(NaiveTime::parse_from_str("12:3456", "%H:%M:%S").is_err()); +} + +#[test] +fn test_time_format() { + let t = NaiveTime::from_hms_nano_opt(3, 5, 7, 98765432).unwrap(); + assert_eq!(t.format("%H,%k,%I,%l,%P,%p").to_string(), "03, 3,03, 3,am,AM"); + assert_eq!(t.format("%M").to_string(), "05"); + assert_eq!(t.format("%S,%f,%.f").to_string(), "07,098765432,.098765432"); + assert_eq!(t.format("%.3f,%.6f,%.9f").to_string(), ".098,.098765,.098765432"); + assert_eq!(t.format("%R").to_string(), "03:05"); + assert_eq!(t.format("%T,%X").to_string(), "03:05:07,03:05:07"); + assert_eq!(t.format("%r").to_string(), "03:05:07 AM"); + assert_eq!(t.format("%t%n%%%n%t").to_string(), "\t\n%\n\t"); + + let t = NaiveTime::from_hms_micro_opt(3, 5, 7, 432100).unwrap(); + assert_eq!(t.format("%S,%f,%.f").to_string(), "07,432100000,.432100"); + assert_eq!(t.format("%.3f,%.6f,%.9f").to_string(), ".432,.432100,.432100000"); + + let t = NaiveTime::from_hms_milli_opt(3, 5, 7, 210).unwrap(); + assert_eq!(t.format("%S,%f,%.f").to_string(), "07,210000000,.210"); + assert_eq!(t.format("%.3f,%.6f,%.9f").to_string(), ".210,.210000,.210000000"); + + let t = NaiveTime::from_hms_opt(3, 5, 7).unwrap(); + assert_eq!(t.format("%S,%f,%.f").to_string(), "07,000000000,"); + assert_eq!(t.format("%.3f,%.6f,%.9f").to_string(), ".000,.000000,.000000000"); + + // corner cases + assert_eq!(NaiveTime::from_hms_opt(13, 57, 9).unwrap().format("%r").to_string(), "01:57:09 PM"); + assert_eq!( + NaiveTime::from_hms_milli_opt(23, 59, 59, 1_000).unwrap().format("%X").to_string(), + "23:59:60" + ); +} diff --git a/javascript-engine/external/chrono/src/offset/fixed.rs b/javascript-engine/external/chrono/src/offset/fixed.rs new file mode 100644 index 0000000..0a8b26e --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/fixed.rs @@ -0,0 +1,284 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! The time zone which has a fixed offset from UTC. + +use core::fmt; +use core::ops::{Add, Sub}; + +use num_integer::div_mod_floor; +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +use super::{LocalResult, Offset, TimeZone}; +use crate::naive::{NaiveDate, NaiveDateTime, NaiveTime}; +use crate::oldtime::Duration as OldDuration; +use crate::DateTime; +use crate::Timelike; + +/// The time zone with fixed offset, from UTC-23:59:59 to UTC+23:59:59. +/// +/// Using the [`TimeZone`](./trait.TimeZone.html) methods +/// on a `FixedOffset` struct is the preferred way to construct +/// `DateTime` instances. See the [`east`](#method.east) and +/// [`west`](#method.west) methods for examples. +#[derive(PartialEq, Eq, Hash, Copy, Clone)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +pub struct FixedOffset { + local_minus_utc: i32, +} + +impl FixedOffset { + /// Makes a new `FixedOffset` for the Eastern Hemisphere with given timezone difference. + /// The negative `secs` means the Western Hemisphere. + /// + /// Panics on the out-of-bound `secs`. + #[deprecated(since = "0.4.23", note = "use `east_opt()` instead")] + pub fn east(secs: i32) -> FixedOffset { + FixedOffset::east_opt(secs).expect("FixedOffset::east out of bounds") + } + + /// Makes a new `FixedOffset` for the Eastern Hemisphere with given timezone difference. + /// The negative `secs` means the Western Hemisphere. + /// + /// Returns `None` on the out-of-bound `secs`. + /// + /// # Example + /// + /// ``` + /// use chrono::{FixedOffset, TimeZone}; + /// let hour = 3600; + /// let datetime = FixedOffset::east_opt(5 * hour).unwrap().ymd_opt(2016, 11, 08).unwrap() + /// .and_hms_opt(0, 0, 0).unwrap(); + /// assert_eq!(&datetime.to_rfc3339(), "2016-11-08T00:00:00+05:00") + /// ``` + pub fn east_opt(secs: i32) -> Option { + if -86_400 < secs && secs < 86_400 { + Some(FixedOffset { local_minus_utc: secs }) + } else { + None + } + } + + /// Makes a new `FixedOffset` for the Western Hemisphere with given timezone difference. + /// The negative `secs` means the Eastern Hemisphere. + /// + /// Panics on the out-of-bound `secs`. + #[deprecated(since = "0.4.23", note = "use `west_opt()` instead")] + pub fn west(secs: i32) -> FixedOffset { + FixedOffset::west_opt(secs).expect("FixedOffset::west out of bounds") + } + + /// Makes a new `FixedOffset` for the Western Hemisphere with given timezone difference. + /// The negative `secs` means the Eastern Hemisphere. + /// + /// Returns `None` on the out-of-bound `secs`. + /// + /// # Example + /// + /// ``` + /// use chrono::{FixedOffset, TimeZone}; + /// let hour = 3600; + /// let datetime = FixedOffset::west_opt(5 * hour).unwrap().ymd_opt(2016, 11, 08).unwrap() + /// .and_hms_opt(0, 0, 0).unwrap(); + /// assert_eq!(&datetime.to_rfc3339(), "2016-11-08T00:00:00-05:00") + /// ``` + pub fn west_opt(secs: i32) -> Option { + if -86_400 < secs && secs < 86_400 { + Some(FixedOffset { local_minus_utc: -secs }) + } else { + None + } + } + + /// Returns the number of seconds to add to convert from UTC to the local time. + #[inline] + pub fn local_minus_utc(&self) -> i32 { + self.local_minus_utc + } + + /// Returns the number of seconds to add to convert from the local time to UTC. + #[inline] + pub fn utc_minus_local(&self) -> i32 { + -self.local_minus_utc + } +} + +impl TimeZone for FixedOffset { + type Offset = FixedOffset; + + fn from_offset(offset: &FixedOffset) -> FixedOffset { + *offset + } + + fn offset_from_local_date(&self, _local: &NaiveDate) -> LocalResult { + LocalResult::Single(*self) + } + fn offset_from_local_datetime(&self, _local: &NaiveDateTime) -> LocalResult { + LocalResult::Single(*self) + } + + fn offset_from_utc_date(&self, _utc: &NaiveDate) -> FixedOffset { + *self + } + fn offset_from_utc_datetime(&self, _utc: &NaiveDateTime) -> FixedOffset { + *self + } +} + +impl Offset for FixedOffset { + fn fix(&self) -> FixedOffset { + *self + } +} + +impl fmt::Debug for FixedOffset { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + let offset = self.local_minus_utc; + let (sign, offset) = if offset < 0 { ('-', -offset) } else { ('+', offset) }; + let (mins, sec) = div_mod_floor(offset, 60); + let (hour, min) = div_mod_floor(mins, 60); + if sec == 0 { + write!(f, "{}{:02}:{:02}", sign, hour, min) + } else { + write!(f, "{}{:02}:{:02}:{:02}", sign, hour, min, sec) + } + } +} + +impl fmt::Display for FixedOffset { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + fmt::Debug::fmt(self, f) + } +} + +#[cfg(feature = "arbitrary")] +impl arbitrary::Arbitrary<'_> for FixedOffset { + fn arbitrary(u: &mut arbitrary::Unstructured) -> arbitrary::Result { + let secs = u.int_in_range(-86_399..=86_399)?; + let fixed_offset = FixedOffset::east_opt(secs) + .expect("Could not generate a valid chrono::FixedOffset. It looks like implementation of Arbitrary for FixedOffset is erroneous."); + Ok(fixed_offset) + } +} + +// addition or subtraction of FixedOffset to/from Timelike values is the same as +// adding or subtracting the offset's local_minus_utc value +// but keep keeps the leap second information. +// this should be implemented more efficiently, but for the time being, this is generic right now. + +fn add_with_leapsecond(lhs: &T, rhs: i32) -> T +where + T: Timelike + Add, +{ + // extract and temporarily remove the fractional part and later recover it + let nanos = lhs.nanosecond(); + let lhs = lhs.with_nanosecond(0).unwrap(); + (lhs + OldDuration::seconds(i64::from(rhs))).with_nanosecond(nanos).unwrap() +} + +impl Add for NaiveTime { + type Output = NaiveTime; + + #[inline] + fn add(self, rhs: FixedOffset) -> NaiveTime { + add_with_leapsecond(&self, rhs.local_minus_utc) + } +} + +impl Sub for NaiveTime { + type Output = NaiveTime; + + #[inline] + fn sub(self, rhs: FixedOffset) -> NaiveTime { + add_with_leapsecond(&self, -rhs.local_minus_utc) + } +} + +impl Add for NaiveDateTime { + type Output = NaiveDateTime; + + #[inline] + fn add(self, rhs: FixedOffset) -> NaiveDateTime { + add_with_leapsecond(&self, rhs.local_minus_utc) + } +} + +impl Sub for NaiveDateTime { + type Output = NaiveDateTime; + + #[inline] + fn sub(self, rhs: FixedOffset) -> NaiveDateTime { + add_with_leapsecond(&self, -rhs.local_minus_utc) + } +} + +impl Add for DateTime { + type Output = DateTime; + + #[inline] + fn add(self, rhs: FixedOffset) -> DateTime { + add_with_leapsecond(&self, rhs.local_minus_utc) + } +} + +impl Sub for DateTime { + type Output = DateTime; + + #[inline] + fn sub(self, rhs: FixedOffset) -> DateTime { + add_with_leapsecond(&self, -rhs.local_minus_utc) + } +} + +#[cfg(test)] +mod tests { + use super::FixedOffset; + use crate::offset::TimeZone; + + #[test] + fn test_date_extreme_offset() { + // starting from 0.3 we don't have an offset exceeding one day. + // this makes everything easier! + assert_eq!( + format!( + "{:?}", + FixedOffset::east_opt(86399) + .unwrap() + .with_ymd_and_hms(2012, 2, 29, 5, 6, 7) + .unwrap() + ), + "2012-02-29T05:06:07+23:59:59".to_string() + ); + assert_eq!( + format!( + "{:?}", + FixedOffset::east_opt(86399) + .unwrap() + .with_ymd_and_hms(2012, 2, 29, 5, 6, 7) + .unwrap() + ), + "2012-02-29T05:06:07+23:59:59".to_string() + ); + assert_eq!( + format!( + "{:?}", + FixedOffset::west_opt(86399) + .unwrap() + .with_ymd_and_hms(2012, 3, 4, 5, 6, 7) + .unwrap() + ), + "2012-03-04T05:06:07-23:59:59".to_string() + ); + assert_eq!( + format!( + "{:?}", + FixedOffset::west_opt(86399) + .unwrap() + .with_ymd_and_hms(2012, 3, 4, 5, 6, 7) + .unwrap() + ), + "2012-03-04T05:06:07-23:59:59".to_string() + ); + } +} diff --git a/javascript-engine/external/chrono/src/offset/local/mod.rs b/javascript-engine/external/chrono/src/offset/local/mod.rs new file mode 100644 index 0000000..e280c78 --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/local/mod.rs @@ -0,0 +1,260 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! The local (system) time zone. + +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +use super::fixed::FixedOffset; +use super::{LocalResult, TimeZone}; +use crate::naive::{NaiveDate, NaiveDateTime}; +#[allow(deprecated)] +use crate::{Date, DateTime}; + +// we don't want `stub.rs` when the target_os is not wasi or emscripten +// as we use js-sys to get the date instead +#[cfg(all( + not(unix), + not(windows), + not(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + )) +))] +#[path = "stub.rs"] +mod inner; + +#[cfg(unix)] +#[path = "unix.rs"] +mod inner; + +#[cfg(windows)] +#[path = "windows.rs"] +mod inner; + +#[cfg(unix)] +mod tz_info; + +/// The local timescale. This is implemented via the standard `time` crate. +/// +/// Using the [`TimeZone`](./trait.TimeZone.html) methods +/// on the Local struct is the preferred way to construct `DateTime` +/// instances. +/// +/// # Example +/// +/// ``` +/// use chrono::{Local, DateTime, TimeZone}; +/// +/// let dt: DateTime = Local::now(); +/// let dt: DateTime = Local.timestamp(0, 0); +/// ``` +#[derive(Copy, Clone, Debug)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))] +pub struct Local; + +impl Local { + /// Returns a `Date` which corresponds to the current date. + #[deprecated(since = "0.4.23", note = "use `Local::now()` instead")] + #[allow(deprecated)] + pub fn today() -> Date { + Local::now().date() + } + + /// Returns a `DateTime` which corresponds to the current date and time. + #[cfg(not(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + )))] + pub fn now() -> DateTime { + inner::now() + } + + /// Returns a `DateTime` which corresponds to the current date and time. + #[cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + ))] + pub fn now() -> DateTime { + use super::Utc; + let now: DateTime = super::Utc::now(); + + // Workaround missing timezone logic in `time` crate + let offset = + FixedOffset::west_opt((js_sys::Date::new_0().get_timezone_offset() as i32) * 60) + .unwrap(); + DateTime::from_utc(now.naive_utc(), offset) + } +} + +impl TimeZone for Local { + type Offset = FixedOffset; + + fn from_offset(_offset: &FixedOffset) -> Local { + Local + } + + // they are easier to define in terms of the finished date and time unlike other offsets + #[allow(deprecated)] + fn offset_from_local_date(&self, local: &NaiveDate) -> LocalResult { + self.from_local_date(local).map(|date| *date.offset()) + } + + fn offset_from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult { + self.from_local_datetime(local).map(|datetime| *datetime.offset()) + } + + #[allow(deprecated)] + fn offset_from_utc_date(&self, utc: &NaiveDate) -> FixedOffset { + *self.from_utc_date(utc).offset() + } + + fn offset_from_utc_datetime(&self, utc: &NaiveDateTime) -> FixedOffset { + *self.from_utc_datetime(utc).offset() + } + + // override them for avoiding redundant works + #[allow(deprecated)] + fn from_local_date(&self, local: &NaiveDate) -> LocalResult> { + // this sounds very strange, but required for keeping `TimeZone::ymd` sane. + // in the other words, we use the offset at the local midnight + // but keep the actual date unaltered (much like `FixedOffset`). + let midnight = self.from_local_datetime(&local.and_hms_opt(0, 0, 0).unwrap()); + midnight.map(|datetime| Date::from_utc(*local, *datetime.offset())) + } + + #[cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + ))] + fn from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult> { + let mut local = local.clone(); + // Get the offset from the js runtime + let offset = + FixedOffset::west_opt((js_sys::Date::new_0().get_timezone_offset() as i32) * 60) + .unwrap(); + local -= crate::Duration::seconds(offset.local_minus_utc() as i64); + LocalResult::Single(DateTime::from_utc(local, offset)) + } + + #[cfg(not(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + )))] + fn from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult> { + inner::naive_to_local(local, true) + } + + #[allow(deprecated)] + fn from_utc_date(&self, utc: &NaiveDate) -> Date { + let midnight = self.from_utc_datetime(&utc.and_hms_opt(0, 0, 0).unwrap()); + Date::from_utc(*utc, *midnight.offset()) + } + + #[cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + ))] + fn from_utc_datetime(&self, utc: &NaiveDateTime) -> DateTime { + // Get the offset from the js runtime + let offset = + FixedOffset::west_opt((js_sys::Date::new_0().get_timezone_offset() as i32) * 60) + .unwrap(); + DateTime::from_utc(*utc, offset) + } + + #[cfg(not(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + )))] + fn from_utc_datetime(&self, utc: &NaiveDateTime) -> DateTime { + // this is OK to unwrap as getting local time from a UTC + // timestamp is never ambiguous + inner::naive_to_local(utc, false).unwrap() + } +} + +#[cfg(test)] +mod tests { + use super::Local; + use crate::offset::TimeZone; + use crate::{Datelike, Duration, Utc}; + + #[test] + fn verify_correct_offsets() { + let now = Local::now(); + let from_local = Local.from_local_datetime(&now.naive_local()).unwrap(); + let from_utc = Local.from_utc_datetime(&now.naive_utc()); + + assert_eq!(now.offset().local_minus_utc(), from_local.offset().local_minus_utc()); + assert_eq!(now.offset().local_minus_utc(), from_utc.offset().local_minus_utc()); + + assert_eq!(now, from_local); + assert_eq!(now, from_utc); + } + + #[test] + fn verify_correct_offsets_distant_past() { + // let distant_past = Local::now() - Duration::days(365 * 100); + let distant_past = Local::now() - Duration::days(250 * 31); + let from_local = Local.from_local_datetime(&distant_past.naive_local()).unwrap(); + let from_utc = Local.from_utc_datetime(&distant_past.naive_utc()); + + assert_eq!(distant_past.offset().local_minus_utc(), from_local.offset().local_minus_utc()); + assert_eq!(distant_past.offset().local_minus_utc(), from_utc.offset().local_minus_utc()); + + assert_eq!(distant_past, from_local); + assert_eq!(distant_past, from_utc); + } + + #[test] + fn verify_correct_offsets_distant_future() { + let distant_future = Local::now() + Duration::days(250 * 31); + let from_local = Local.from_local_datetime(&distant_future.naive_local()).unwrap(); + let from_utc = Local.from_utc_datetime(&distant_future.naive_utc()); + + assert_eq!( + distant_future.offset().local_minus_utc(), + from_local.offset().local_minus_utc() + ); + assert_eq!(distant_future.offset().local_minus_utc(), from_utc.offset().local_minus_utc()); + + assert_eq!(distant_future, from_local); + assert_eq!(distant_future, from_utc); + } + + #[test] + fn test_local_date_sanity_check() { + // issue #27 + assert_eq!(Local.with_ymd_and_hms(2999, 12, 28, 0, 0, 0).unwrap().day(), 28); + } + + #[test] + fn test_leap_second() { + // issue #123 + let today = Utc::now().date_naive(); + + let dt = today.and_hms_milli_opt(1, 2, 59, 1000).unwrap(); + let timestr = dt.time().to_string(); + // the OS API may or may not support the leap second, + // but there are only two sensible options. + assert!(timestr == "01:02:60" || timestr == "01:03:00", "unexpected timestr {:?}", timestr); + + let dt = today.and_hms_milli_opt(1, 2, 3, 1234).unwrap(); + let timestr = dt.time().to_string(); + assert!( + timestr == "01:02:03.234" || timestr == "01:02:04.234", + "unexpected timestr {:?}", + timestr + ); + } +} diff --git a/javascript-engine/external/chrono/src/offset/local/stub.rs b/javascript-engine/external/chrono/src/offset/local/stub.rs new file mode 100644 index 0000000..a5a74dd --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/local/stub.rs @@ -0,0 +1,237 @@ +// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use std::time::{SystemTime, UNIX_EPOCH}; + +use super::{FixedOffset, Local}; +use crate::{DateTime, Datelike, LocalResult, NaiveDate, NaiveDateTime, NaiveTime, Timelike}; + +pub(super) fn now() -> DateTime { + tm_to_datetime(Timespec::now().local()) +} + +/// Converts a local `NaiveDateTime` to the `time::Timespec`. +#[cfg(not(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) +)))] +pub(super) fn naive_to_local(d: &NaiveDateTime, local: bool) -> LocalResult> { + let tm = Tm { + tm_sec: d.second() as i32, + tm_min: d.minute() as i32, + tm_hour: d.hour() as i32, + tm_mday: d.day() as i32, + tm_mon: d.month0() as i32, // yes, C is that strange... + tm_year: d.year() - 1900, // this doesn't underflow, we know that d is `NaiveDateTime`. + tm_wday: 0, // to_local ignores this + tm_yday: 0, // and this + tm_isdst: -1, + // This seems pretty fake? + tm_utcoff: if local { 1 } else { 0 }, + // do not set this, OS APIs are heavily inconsistent in terms of leap second handling + tm_nsec: 0, + }; + + let spec = Timespec { + sec: match local { + false => utc_tm_to_time(&tm), + true => local_tm_to_time(&tm), + }, + nsec: tm.tm_nsec, + }; + + // Adjust for leap seconds + let mut tm = spec.local(); + assert_eq!(tm.tm_nsec, 0); + tm.tm_nsec = d.nanosecond() as i32; + + LocalResult::Single(tm_to_datetime(tm)) +} + +/// Converts a `time::Tm` struct into the timezone-aware `DateTime`. +/// This assumes that `time` is working correctly, i.e. any error is fatal. +#[cfg(not(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) +)))] +fn tm_to_datetime(mut tm: Tm) -> DateTime { + if tm.tm_sec >= 60 { + tm.tm_nsec += (tm.tm_sec - 59) * 1_000_000_000; + tm.tm_sec = 59; + } + + let date = NaiveDate::from_yo_opt(tm.tm_year + 1900, tm.tm_yday as u32 + 1) + .expect("invalid or out-of-range date"); + let time = NaiveTime::from_hms_nano_opt( + tm.tm_hour as u32, + tm.tm_min as u32, + tm.tm_sec as u32, + tm.tm_nsec as u32, + ).expect("invalid time"); + + let offset = FixedOffset::east_opt(tm.tm_utcoff).unwrap(); + DateTime::from_utc(date.and_time(time) - offset, offset) +} + +/// A record specifying a time value in seconds and nanoseconds, where +/// nanoseconds represent the offset from the given second. +/// +/// For example a timespec of 1.2 seconds after the beginning of the epoch would +/// be represented as {sec: 1, nsec: 200000000}. +struct Timespec { + sec: i64, + nsec: i32, +} + +impl Timespec { + /// Constructs a timespec representing the current time in UTC. + fn now() -> Timespec { + let st = + SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch"); + Timespec { sec: st.as_secs() as i64, nsec: st.subsec_nanos() as i32 } + } + + /// Converts this timespec into the system's local time. + fn local(self) -> Tm { + let mut tm = Tm { + tm_sec: 0, + tm_min: 0, + tm_hour: 0, + tm_mday: 0, + tm_mon: 0, + tm_year: 0, + tm_wday: 0, + tm_yday: 0, + tm_isdst: 0, + tm_utcoff: 0, + tm_nsec: 0, + }; + time_to_local_tm(self.sec, &mut tm); + tm.tm_nsec = self.nsec; + tm + } +} + +/// Holds a calendar date and time broken down into its components (year, month, +/// day, and so on), also called a broken-down time value. +// FIXME: use c_int instead of i32? +#[repr(C)] +pub(super) struct Tm { + /// Seconds after the minute - [0, 60] + tm_sec: i32, + + /// Minutes after the hour - [0, 59] + tm_min: i32, + + /// Hours after midnight - [0, 23] + tm_hour: i32, + + /// Day of the month - [1, 31] + tm_mday: i32, + + /// Months since January - [0, 11] + tm_mon: i32, + + /// Years since 1900 + tm_year: i32, + + /// Days since Sunday - [0, 6]. 0 = Sunday, 1 = Monday, ..., 6 = Saturday. + tm_wday: i32, + + /// Days since January 1 - [0, 365] + tm_yday: i32, + + /// Daylight Saving Time flag. + /// + /// This value is positive if Daylight Saving Time is in effect, zero if + /// Daylight Saving Time is not in effect, and negative if this information + /// is not available. + tm_isdst: i32, + + /// Identifies the time zone that was used to compute this broken-down time + /// value, including any adjustment for Daylight Saving Time. This is the + /// number of seconds east of UTC. For example, for U.S. Pacific Daylight + /// Time, the value is `-7*60*60 = -25200`. + tm_utcoff: i32, + + /// Nanoseconds after the second - [0, 109 - 1] + tm_nsec: i32, +} + +fn time_to_tm(ts: i64, tm: &mut Tm) { + let leapyear = |year| -> bool { year % 4 == 0 && (year % 100 != 0 || year % 400 == 0) }; + + static YTAB: [[i64; 12]; 2] = [ + [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31], + [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31], + ]; + + let mut year = 1970; + + let dayclock = ts % 86400; + let mut dayno = ts / 86400; + + tm.tm_sec = (dayclock % 60) as i32; + tm.tm_min = ((dayclock % 3600) / 60) as i32; + tm.tm_hour = (dayclock / 3600) as i32; + tm.tm_wday = ((dayno + 4) % 7) as i32; + loop { + let yearsize = if leapyear(year) { 366 } else { 365 }; + if dayno >= yearsize { + dayno -= yearsize; + year += 1; + } else { + break; + } + } + tm.tm_year = (year - 1900) as i32; + tm.tm_yday = dayno as i32; + let mut mon = 0; + while dayno >= YTAB[if leapyear(year) { 1 } else { 0 }][mon] { + dayno -= YTAB[if leapyear(year) { 1 } else { 0 }][mon]; + mon += 1; + } + tm.tm_mon = mon as i32; + tm.tm_mday = dayno as i32 + 1; + tm.tm_isdst = 0; +} + +fn tm_to_time(tm: &Tm) -> i64 { + let mut y = tm.tm_year as i64 + 1900; + let mut m = tm.tm_mon as i64 + 1; + if m <= 2 { + y -= 1; + m += 12; + } + let d = tm.tm_mday as i64; + let h = tm.tm_hour as i64; + let mi = tm.tm_min as i64; + let s = tm.tm_sec as i64; + (365 * y + y / 4 - y / 100 + y / 400 + 3 * (m + 1) / 5 + 30 * m + d - 719561) * 86400 + + 3600 * h + + 60 * mi + + s +} + +pub(super) fn time_to_local_tm(sec: i64, tm: &mut Tm) { + // FIXME: Add timezone logic + time_to_tm(sec, tm); +} + +pub(super) fn utc_tm_to_time(tm: &Tm) -> i64 { + tm_to_time(tm) +} + +pub(super) fn local_tm_to_time(tm: &Tm) -> i64 { + // FIXME: Add timezone logic + tm_to_time(tm) +} diff --git a/javascript-engine/external/chrono/src/offset/local/tz_info/mod.rs b/javascript-engine/external/chrono/src/offset/local/tz_info/mod.rs new file mode 100644 index 0000000..bd2693b --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/local/tz_info/mod.rs @@ -0,0 +1,131 @@ +#![deny(missing_docs)] +#![allow(dead_code)] +#![warn(unreachable_pub)] + +use std::num::ParseIntError; +use std::str::Utf8Error; +use std::time::SystemTimeError; +use std::{error, fmt, io}; + +mod timezone; +pub(crate) use timezone::TimeZone; + +mod parser; +mod rule; + +/// Unified error type for everything in the crate +#[derive(Debug)] +pub(crate) enum Error { + /// Date time error + DateTime(&'static str), + /// Local time type search error + FindLocalTimeType(&'static str), + /// Local time type error + LocalTimeType(&'static str), + /// Invalid slice for integer conversion + InvalidSlice(&'static str), + /// Invalid Tzif file + InvalidTzFile(&'static str), + /// Invalid TZ string + InvalidTzString(&'static str), + /// I/O error + Io(io::Error), + /// Out of range error + OutOfRange(&'static str), + /// Integer parsing error + ParseInt(ParseIntError), + /// Date time projection error + ProjectDateTime(&'static str), + /// System time error + SystemTime(SystemTimeError), + /// Time zone error + TimeZone(&'static str), + /// Transition rule error + TransitionRule(&'static str), + /// Unsupported Tzif file + UnsupportedTzFile(&'static str), + /// Unsupported TZ string + UnsupportedTzString(&'static str), + /// UTF-8 error + Utf8(Utf8Error), +} + +impl fmt::Display for Error { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + use Error::*; + match self { + DateTime(error) => write!(f, "invalid date time: {}", error), + FindLocalTimeType(error) => error.fmt(f), + LocalTimeType(error) => write!(f, "invalid local time type: {}", error), + InvalidSlice(error) => error.fmt(f), + InvalidTzString(error) => write!(f, "invalid TZ string: {}", error), + InvalidTzFile(error) => error.fmt(f), + Io(error) => error.fmt(f), + OutOfRange(error) => error.fmt(f), + ParseInt(error) => error.fmt(f), + ProjectDateTime(error) => error.fmt(f), + SystemTime(error) => error.fmt(f), + TransitionRule(error) => write!(f, "invalid transition rule: {}", error), + TimeZone(error) => write!(f, "invalid time zone: {}", error), + UnsupportedTzFile(error) => error.fmt(f), + UnsupportedTzString(error) => write!(f, "unsupported TZ string: {}", error), + Utf8(error) => error.fmt(f), + } + } +} + +impl error::Error for Error {} + +impl From for Error { + fn from(error: io::Error) -> Self { + Error::Io(error) + } +} + +impl From for Error { + fn from(error: ParseIntError) -> Self { + Error::ParseInt(error) + } +} + +impl From for Error { + fn from(error: SystemTimeError) -> Self { + Error::SystemTime(error) + } +} + +impl From for Error { + fn from(error: Utf8Error) -> Self { + Error::Utf8(error) + } +} + +// MSRV: 1.38 +#[inline] +fn rem_euclid(v: i64, rhs: i64) -> i64 { + let r = v % rhs; + if r < 0 { + if rhs < 0 { + r - rhs + } else { + r + rhs + } + } else { + r + } +} + +/// Number of hours in one day +const HOURS_PER_DAY: i64 = 24; +/// Number of seconds in one hour +const SECONDS_PER_HOUR: i64 = 3600; +/// Number of seconds in one day +const SECONDS_PER_DAY: i64 = SECONDS_PER_HOUR * HOURS_PER_DAY; +/// Number of days in one week +const DAYS_PER_WEEK: i64 = 7; + +/// Month days in a normal year +const DAY_IN_MONTHS_NORMAL_YEAR: [i64; 12] = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]; +/// Cumulated month days in a normal year +const CUMUL_DAY_IN_MONTHS_NORMAL_YEAR: [i64; 12] = + [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334]; diff --git a/javascript-engine/external/chrono/src/offset/local/tz_info/parser.rs b/javascript-engine/external/chrono/src/offset/local/tz_info/parser.rs new file mode 100644 index 0000000..77f8e48 --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/local/tz_info/parser.rs @@ -0,0 +1,334 @@ +use std::io::{self, ErrorKind}; +use std::iter; +use std::num::ParseIntError; +use std::str::{self, FromStr}; + +use super::rule::TransitionRule; +use super::timezone::{LeapSecond, LocalTimeType, TimeZone, Transition}; +use super::Error; + +#[allow(clippy::map_clone)] // MSRV: 1.36 +pub(super) fn parse(bytes: &[u8]) -> Result { + let mut cursor = Cursor::new(bytes); + let state = State::new(&mut cursor, true)?; + let (state, footer) = match state.header.version { + Version::V1 => match cursor.is_empty() { + true => (state, None), + false => { + return Err(Error::InvalidTzFile("remaining data after end of TZif v1 data block")) + } + }, + Version::V2 | Version::V3 => { + let state = State::new(&mut cursor, false)?; + (state, Some(cursor.remaining())) + } + }; + + let mut transitions = Vec::with_capacity(state.header.transition_count); + for (arr_time, &local_time_type_index) in + state.transition_times.chunks_exact(state.time_size).zip(state.transition_types) + { + let unix_leap_time = + state.parse_time(&arr_time[0..state.time_size], state.header.version)?; + let local_time_type_index = local_time_type_index as usize; + transitions.push(Transition::new(unix_leap_time, local_time_type_index)); + } + + let mut local_time_types = Vec::with_capacity(state.header.type_count); + for arr in state.local_time_types.chunks_exact(6) { + let ut_offset = read_be_i32(&arr[..4])?; + + let is_dst = match arr[4] { + 0 => false, + 1 => true, + _ => return Err(Error::InvalidTzFile("invalid DST indicator")), + }; + + let char_index = arr[5] as usize; + if char_index >= state.header.char_count { + return Err(Error::InvalidTzFile("invalid time zone name char index")); + } + + let position = match state.names[char_index..].iter().position(|&c| c == b'\0') { + Some(position) => position, + None => return Err(Error::InvalidTzFile("invalid time zone name char index")), + }; + + let name = &state.names[char_index..char_index + position]; + let name = if !name.is_empty() { Some(name) } else { None }; + local_time_types.push(LocalTimeType::new(ut_offset, is_dst, name)?); + } + + let mut leap_seconds = Vec::with_capacity(state.header.leap_count); + for arr in state.leap_seconds.chunks_exact(state.time_size + 4) { + let unix_leap_time = state.parse_time(&arr[0..state.time_size], state.header.version)?; + let correction = read_be_i32(&arr[state.time_size..state.time_size + 4])?; + leap_seconds.push(LeapSecond::new(unix_leap_time, correction)); + } + + let std_walls_iter = state.std_walls.iter().map(|&i| i).chain(iter::repeat(0)); + let ut_locals_iter = state.ut_locals.iter().map(|&i| i).chain(iter::repeat(0)); + if std_walls_iter.zip(ut_locals_iter).take(state.header.type_count).any(|pair| pair == (0, 1)) { + return Err(Error::InvalidTzFile( + "invalid couple of standard/wall and UT/local indicators", + )); + } + + let extra_rule = match footer { + Some(footer) => { + let footer = str::from_utf8(footer)?; + if !(footer.starts_with('\n') && footer.ends_with('\n')) { + return Err(Error::InvalidTzFile("invalid footer")); + } + + let tz_string = footer.trim_matches(|c: char| c.is_ascii_whitespace()); + if tz_string.starts_with(':') || tz_string.contains('\0') { + return Err(Error::InvalidTzFile("invalid footer")); + } + + match tz_string.is_empty() { + true => None, + false => Some(TransitionRule::from_tz_string( + tz_string.as_bytes(), + state.header.version == Version::V3, + )?), + } + } + None => None, + }; + + TimeZone::new(transitions, local_time_types, leap_seconds, extra_rule) +} + +/// TZif data blocks +struct State<'a> { + header: Header, + /// Time size in bytes + time_size: usize, + /// Transition times data block + transition_times: &'a [u8], + /// Transition types data block + transition_types: &'a [u8], + /// Local time types data block + local_time_types: &'a [u8], + /// Time zone names data block + names: &'a [u8], + /// Leap seconds data block + leap_seconds: &'a [u8], + /// UT/local indicators data block + std_walls: &'a [u8], + /// Standard/wall indicators data block + ut_locals: &'a [u8], +} + +impl<'a> State<'a> { + /// Read TZif data blocks + fn new(cursor: &mut Cursor<'a>, first: bool) -> Result { + let header = Header::new(cursor)?; + let time_size = match first { + true => 4, // We always parse V1 first + false => 8, + }; + + Ok(Self { + time_size, + transition_times: cursor.read_exact(header.transition_count * time_size)?, + transition_types: cursor.read_exact(header.transition_count)?, + local_time_types: cursor.read_exact(header.type_count * 6)?, + names: cursor.read_exact(header.char_count)?, + leap_seconds: cursor.read_exact(header.leap_count * (time_size + 4))?, + std_walls: cursor.read_exact(header.std_wall_count)?, + ut_locals: cursor.read_exact(header.ut_local_count)?, + header, + }) + } + + /// Parse time values + fn parse_time(&self, arr: &[u8], version: Version) -> Result { + match version { + Version::V1 => Ok(read_be_i32(&arr[..4])?.into()), + Version::V2 | Version::V3 => read_be_i64(arr), + } + } +} + +/// TZif header +#[derive(Debug)] +struct Header { + /// TZif version + version: Version, + /// Number of UT/local indicators + ut_local_count: usize, + /// Number of standard/wall indicators + std_wall_count: usize, + /// Number of leap-second records + leap_count: usize, + /// Number of transition times + transition_count: usize, + /// Number of local time type records + type_count: usize, + /// Number of time zone names bytes + char_count: usize, +} + +impl Header { + fn new(cursor: &mut Cursor) -> Result { + let magic = cursor.read_exact(4)?; + if magic != *b"TZif" { + return Err(Error::InvalidTzFile("invalid magic number")); + } + + let version = match cursor.read_exact(1)? { + [0x00] => Version::V1, + [0x32] => Version::V2, + [0x33] => Version::V3, + _ => return Err(Error::UnsupportedTzFile("unsupported TZif version")), + }; + + cursor.read_exact(15)?; + let ut_local_count = cursor.read_be_u32()?; + let std_wall_count = cursor.read_be_u32()?; + let leap_count = cursor.read_be_u32()?; + let transition_count = cursor.read_be_u32()?; + let type_count = cursor.read_be_u32()?; + let char_count = cursor.read_be_u32()?; + + if !(type_count != 0 + && char_count != 0 + && (ut_local_count == 0 || ut_local_count == type_count) + && (std_wall_count == 0 || std_wall_count == type_count)) + { + return Err(Error::InvalidTzFile("invalid header")); + } + + Ok(Self { + version, + ut_local_count: ut_local_count as usize, + std_wall_count: std_wall_count as usize, + leap_count: leap_count as usize, + transition_count: transition_count as usize, + type_count: type_count as usize, + char_count: char_count as usize, + }) + } +} + +/// A `Cursor` contains a slice of a buffer and a read count. +#[derive(Debug, Eq, PartialEq)] +pub(crate) struct Cursor<'a> { + /// Slice representing the remaining data to be read + remaining: &'a [u8], + /// Number of already read bytes + read_count: usize, +} + +impl<'a> Cursor<'a> { + /// Construct a new `Cursor` from remaining data + pub(crate) fn new(remaining: &'a [u8]) -> Self { + Self { remaining, read_count: 0 } + } + + pub(crate) fn peek(&self) -> Option<&u8> { + self.remaining().first() + } + + /// Returns remaining data + pub(crate) fn remaining(&self) -> &'a [u8] { + self.remaining + } + + /// Returns `true` if data is remaining + pub(crate) fn is_empty(&self) -> bool { + self.remaining.is_empty() + } + + pub(crate) fn read_be_u32(&mut self) -> Result { + let mut buf = [0; 4]; + buf.copy_from_slice(self.read_exact(4)?); + Ok(u32::from_be_bytes(buf)) + } + + /// Read exactly `count` bytes, reducing remaining data and incrementing read count + pub(crate) fn read_exact(&mut self, count: usize) -> Result<&'a [u8], io::Error> { + match (self.remaining.get(..count), self.remaining.get(count..)) { + (Some(result), Some(remaining)) => { + self.remaining = remaining; + self.read_count += count; + Ok(result) + } + _ => Err(io::Error::from(ErrorKind::UnexpectedEof)), + } + } + + /// Read bytes and compare them to the provided tag + pub(crate) fn read_tag(&mut self, tag: &[u8]) -> Result<(), io::Error> { + if self.read_exact(tag.len())? == tag { + Ok(()) + } else { + Err(io::Error::from(ErrorKind::InvalidData)) + } + } + + /// Read bytes if the remaining data is prefixed by the provided tag + pub(crate) fn read_optional_tag(&mut self, tag: &[u8]) -> Result { + if self.remaining.starts_with(tag) { + self.read_exact(tag.len())?; + Ok(true) + } else { + Ok(false) + } + } + + /// Read bytes as long as the provided predicate is true + pub(crate) fn read_while bool>(&mut self, f: F) -> Result<&'a [u8], io::Error> { + match self.remaining.iter().position(|x| !f(x)) { + None => self.read_exact(self.remaining.len()), + Some(position) => self.read_exact(position), + } + } + + // Parse an integer out of the ASCII digits + pub(crate) fn read_int>(&mut self) -> Result { + let bytes = self.read_while(u8::is_ascii_digit)?; + Ok(str::from_utf8(bytes)?.parse()?) + } + + /// Read bytes until the provided predicate is true + pub(crate) fn read_until bool>(&mut self, f: F) -> Result<&'a [u8], io::Error> { + match self.remaining.iter().position(f) { + None => self.read_exact(self.remaining.len()), + Some(position) => self.read_exact(position), + } + } +} + +pub(crate) fn read_be_i32(bytes: &[u8]) -> Result { + if bytes.len() != 4 { + return Err(Error::InvalidSlice("too short for i32")); + } + + let mut buf = [0; 4]; + buf.copy_from_slice(bytes); + Ok(i32::from_be_bytes(buf)) +} + +pub(crate) fn read_be_i64(bytes: &[u8]) -> Result { + if bytes.len() != 8 { + return Err(Error::InvalidSlice("too short for i64")); + } + + let mut buf = [0; 8]; + buf.copy_from_slice(bytes); + Ok(i64::from_be_bytes(buf)) +} + +/// TZif version +#[derive(Debug, Copy, Clone, Eq, PartialEq)] +enum Version { + /// Version 1 + V1, + /// Version 2 + V2, + /// Version 3 + V3, +} diff --git a/javascript-engine/external/chrono/src/offset/local/tz_info/rule.rs b/javascript-engine/external/chrono/src/offset/local/tz_info/rule.rs new file mode 100644 index 0000000..7befddb --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/local/tz_info/rule.rs @@ -0,0 +1,1046 @@ +use std::cmp::Ordering; + +use super::parser::Cursor; +use super::timezone::{LocalTimeType, SECONDS_PER_WEEK}; +use super::{ + rem_euclid, Error, CUMUL_DAY_IN_MONTHS_NORMAL_YEAR, DAYS_PER_WEEK, DAY_IN_MONTHS_NORMAL_YEAR, + SECONDS_PER_DAY, +}; + +/// Transition rule +#[derive(Debug, Copy, Clone, Eq, PartialEq)] +pub(super) enum TransitionRule { + /// Fixed local time type + Fixed(LocalTimeType), + /// Alternate local time types + Alternate(AlternateTime), +} + +impl TransitionRule { + /// Parse a POSIX TZ string containing a time zone description, as described in [the POSIX documentation of the `TZ` environment variable](https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html). + /// + /// TZ string extensions from [RFC 8536](https://datatracker.ietf.org/doc/html/rfc8536#section-3.3.1) may be used. + /// + pub(super) fn from_tz_string( + tz_string: &[u8], + use_string_extensions: bool, + ) -> Result { + let mut cursor = Cursor::new(tz_string); + + let std_time_zone = Some(parse_name(&mut cursor)?); + let std_offset = parse_offset(&mut cursor)?; + + if cursor.is_empty() { + return Ok(LocalTimeType::new(-std_offset, false, std_time_zone)?.into()); + } + + let dst_time_zone = Some(parse_name(&mut cursor)?); + + let dst_offset = match cursor.peek() { + Some(&b',') => std_offset - 3600, + Some(_) => parse_offset(&mut cursor)?, + None => { + return Err(Error::UnsupportedTzString("DST start and end rules must be provided")) + } + }; + + if cursor.is_empty() { + return Err(Error::UnsupportedTzString("DST start and end rules must be provided")); + } + + cursor.read_tag(b",")?; + let (dst_start, dst_start_time) = RuleDay::parse(&mut cursor, use_string_extensions)?; + + cursor.read_tag(b",")?; + let (dst_end, dst_end_time) = RuleDay::parse(&mut cursor, use_string_extensions)?; + + if !cursor.is_empty() { + return Err(Error::InvalidTzString("remaining data after parsing TZ string")); + } + + Ok(AlternateTime::new( + LocalTimeType::new(-std_offset, false, std_time_zone)?, + LocalTimeType::new(-dst_offset, true, dst_time_zone)?, + dst_start, + dst_start_time, + dst_end, + dst_end_time, + )? + .into()) + } + + /// Find the local time type associated to the transition rule at the specified Unix time in seconds + pub(super) fn find_local_time_type(&self, unix_time: i64) -> Result<&LocalTimeType, Error> { + match self { + TransitionRule::Fixed(local_time_type) => Ok(local_time_type), + TransitionRule::Alternate(alternate_time) => { + alternate_time.find_local_time_type(unix_time) + } + } + } + + /// Find the local time type associated to the transition rule at the specified Unix time in seconds + pub(super) fn find_local_time_type_from_local( + &self, + local_time: i64, + year: i32, + ) -> Result, Error> { + match self { + TransitionRule::Fixed(local_time_type) => { + Ok(crate::LocalResult::Single(*local_time_type)) + } + TransitionRule::Alternate(alternate_time) => { + alternate_time.find_local_time_type_from_local(local_time, year) + } + } + } +} + +impl From for TransitionRule { + fn from(inner: LocalTimeType) -> Self { + TransitionRule::Fixed(inner) + } +} + +impl From for TransitionRule { + fn from(inner: AlternateTime) -> Self { + TransitionRule::Alternate(inner) + } +} + +/// Transition rule representing alternate local time types +#[derive(Debug, Copy, Clone, Eq, PartialEq)] +pub(super) struct AlternateTime { + /// Local time type for standard time + pub(super) std: LocalTimeType, + /// Local time type for Daylight Saving Time + pub(super) dst: LocalTimeType, + /// Start day of Daylight Saving Time + dst_start: RuleDay, + /// Local start day time of Daylight Saving Time, in seconds + dst_start_time: i32, + /// End day of Daylight Saving Time + dst_end: RuleDay, + /// Local end day time of Daylight Saving Time, in seconds + dst_end_time: i32, +} + +impl AlternateTime { + /// Construct a transition rule representing alternate local time types + fn new( + std: LocalTimeType, + dst: LocalTimeType, + dst_start: RuleDay, + dst_start_time: i32, + dst_end: RuleDay, + dst_end_time: i32, + ) -> Result { + // Overflow is not possible + if !((dst_start_time as i64).abs() < SECONDS_PER_WEEK + && (dst_end_time as i64).abs() < SECONDS_PER_WEEK) + { + return Err(Error::TransitionRule("invalid DST start or end time")); + } + + Ok(Self { std, dst, dst_start, dst_start_time, dst_end, dst_end_time }) + } + + /// Find the local time type associated to the alternate transition rule at the specified Unix time in seconds + fn find_local_time_type(&self, unix_time: i64) -> Result<&LocalTimeType, Error> { + // Overflow is not possible + let dst_start_time_in_utc = self.dst_start_time as i64 - self.std.ut_offset as i64; + let dst_end_time_in_utc = self.dst_end_time as i64 - self.dst.ut_offset as i64; + + let current_year = match UtcDateTime::from_timespec(unix_time) { + Ok(dt) => dt.year, + Err(error) => return Err(error), + }; + + // Check if the current year is valid for the following computations + if !(i32::min_value() + 2 <= current_year && current_year <= i32::max_value() - 2) { + return Err(Error::OutOfRange("out of range date time")); + } + + let current_year_dst_start_unix_time = + self.dst_start.unix_time(current_year, dst_start_time_in_utc); + let current_year_dst_end_unix_time = + self.dst_end.unix_time(current_year, dst_end_time_in_utc); + + // Check DST start/end Unix times for previous/current/next years to support for transition day times outside of [0h, 24h] range + let is_dst = + match Ord::cmp(¤t_year_dst_start_unix_time, ¤t_year_dst_end_unix_time) { + Ordering::Less | Ordering::Equal => { + if unix_time < current_year_dst_start_unix_time { + let previous_year_dst_end_unix_time = + self.dst_end.unix_time(current_year - 1, dst_end_time_in_utc); + if unix_time < previous_year_dst_end_unix_time { + let previous_year_dst_start_unix_time = + self.dst_start.unix_time(current_year - 1, dst_start_time_in_utc); + previous_year_dst_start_unix_time <= unix_time + } else { + false + } + } else if unix_time < current_year_dst_end_unix_time { + true + } else { + let next_year_dst_start_unix_time = + self.dst_start.unix_time(current_year + 1, dst_start_time_in_utc); + if next_year_dst_start_unix_time <= unix_time { + let next_year_dst_end_unix_time = + self.dst_end.unix_time(current_year + 1, dst_end_time_in_utc); + unix_time < next_year_dst_end_unix_time + } else { + false + } + } + } + Ordering::Greater => { + if unix_time < current_year_dst_end_unix_time { + let previous_year_dst_start_unix_time = + self.dst_start.unix_time(current_year - 1, dst_start_time_in_utc); + if unix_time < previous_year_dst_start_unix_time { + let previous_year_dst_end_unix_time = + self.dst_end.unix_time(current_year - 1, dst_end_time_in_utc); + unix_time < previous_year_dst_end_unix_time + } else { + true + } + } else if unix_time < current_year_dst_start_unix_time { + false + } else { + let next_year_dst_end_unix_time = + self.dst_end.unix_time(current_year + 1, dst_end_time_in_utc); + if next_year_dst_end_unix_time <= unix_time { + let next_year_dst_start_unix_time = + self.dst_start.unix_time(current_year + 1, dst_start_time_in_utc); + next_year_dst_start_unix_time <= unix_time + } else { + true + } + } + } + }; + + if is_dst { + Ok(&self.dst) + } else { + Ok(&self.std) + } + } + + fn find_local_time_type_from_local( + &self, + local_time: i64, + current_year: i32, + ) -> Result, Error> { + // Check if the current year is valid for the following computations + if !(i32::min_value() + 2 <= current_year && current_year <= i32::max_value() - 2) { + return Err(Error::OutOfRange("out of range date time")); + } + + let dst_start_transition_start = + self.dst_start.unix_time(current_year, 0) + i64::from(self.dst_start_time); + let dst_start_transition_end = self.dst_start.unix_time(current_year, 0) + + i64::from(self.dst_start_time) + + i64::from(self.dst.ut_offset) + - i64::from(self.std.ut_offset); + + let dst_end_transition_start = + self.dst_end.unix_time(current_year, 0) + i64::from(self.dst_end_time); + let dst_end_transition_end = self.dst_end.unix_time(current_year, 0) + + i64::from(self.dst_end_time) + + i64::from(self.std.ut_offset) + - i64::from(self.dst.ut_offset); + + match self.std.ut_offset.cmp(&self.dst.ut_offset) { + Ordering::Equal => Ok(crate::LocalResult::Single(self.std)), + Ordering::Less => { + if self.dst_start.transition_date(current_year).0 + < self.dst_end.transition_date(current_year).0 + { + // northern hemisphere + // For the DST END transition, the `start` happens at a later timestamp than the `end`. + if local_time <= dst_start_transition_start { + Ok(crate::LocalResult::Single(self.std)) + } else if local_time > dst_start_transition_start + && local_time < dst_start_transition_end + { + Ok(crate::LocalResult::None) + } else if local_time >= dst_start_transition_end + && local_time < dst_end_transition_end + { + Ok(crate::LocalResult::Single(self.dst)) + } else if local_time >= dst_end_transition_end + && local_time <= dst_end_transition_start + { + Ok(crate::LocalResult::Ambiguous(self.std, self.dst)) + } else { + Ok(crate::LocalResult::Single(self.std)) + } + } else { + // southern hemisphere regular DST + // For the DST END transition, the `start` happens at a later timestamp than the `end`. + if local_time < dst_end_transition_end { + Ok(crate::LocalResult::Single(self.dst)) + } else if local_time >= dst_end_transition_end + && local_time <= dst_end_transition_start + { + Ok(crate::LocalResult::Ambiguous(self.std, self.dst)) + } else if local_time > dst_end_transition_end + && local_time < dst_start_transition_start + { + Ok(crate::LocalResult::Single(self.std)) + } else if local_time >= dst_start_transition_start + && local_time < dst_start_transition_end + { + Ok(crate::LocalResult::None) + } else { + Ok(crate::LocalResult::Single(self.dst)) + } + } + } + Ordering::Greater => { + if self.dst_start.transition_date(current_year).0 + < self.dst_end.transition_date(current_year).0 + { + // southern hemisphere reverse DST + // For the DST END transition, the `start` happens at a later timestamp than the `end`. + if local_time < dst_start_transition_end { + Ok(crate::LocalResult::Single(self.std)) + } else if local_time >= dst_start_transition_end + && local_time <= dst_start_transition_start + { + Ok(crate::LocalResult::Ambiguous(self.dst, self.std)) + } else if local_time > dst_start_transition_start + && local_time < dst_end_transition_start + { + Ok(crate::LocalResult::Single(self.dst)) + } else if local_time >= dst_end_transition_start + && local_time < dst_end_transition_end + { + Ok(crate::LocalResult::None) + } else { + Ok(crate::LocalResult::Single(self.std)) + } + } else { + // northern hemisphere reverse DST + // For the DST END transition, the `start` happens at a later timestamp than the `end`. + if local_time <= dst_end_transition_start { + Ok(crate::LocalResult::Single(self.dst)) + } else if local_time > dst_end_transition_start + && local_time < dst_end_transition_end + { + Ok(crate::LocalResult::None) + } else if local_time >= dst_end_transition_end + && local_time < dst_start_transition_end + { + Ok(crate::LocalResult::Single(self.std)) + } else if local_time >= dst_start_transition_end + && local_time <= dst_start_transition_start + { + Ok(crate::LocalResult::Ambiguous(self.dst, self.std)) + } else { + Ok(crate::LocalResult::Single(self.dst)) + } + } + } + } + } +} + +/// Parse time zone name +fn parse_name<'a>(cursor: &mut Cursor<'a>) -> Result<&'a [u8], Error> { + match cursor.peek() { + Some(b'<') => {} + _ => return Ok(cursor.read_while(u8::is_ascii_alphabetic)?), + } + + cursor.read_exact(1)?; + let unquoted = cursor.read_until(|&x| x == b'>')?; + cursor.read_exact(1)?; + Ok(unquoted) +} + +/// Parse time zone offset +fn parse_offset(cursor: &mut Cursor) -> Result { + let (sign, hour, minute, second) = parse_signed_hhmmss(cursor)?; + + if !(0..=24).contains(&hour) { + return Err(Error::InvalidTzString("invalid offset hour")); + } + if !(0..=59).contains(&minute) { + return Err(Error::InvalidTzString("invalid offset minute")); + } + if !(0..=59).contains(&second) { + return Err(Error::InvalidTzString("invalid offset second")); + } + + Ok(sign * (hour * 3600 + minute * 60 + second)) +} + +/// Parse transition rule time +fn parse_rule_time(cursor: &mut Cursor) -> Result { + let (hour, minute, second) = parse_hhmmss(cursor)?; + + if !(0..=24).contains(&hour) { + return Err(Error::InvalidTzString("invalid day time hour")); + } + if !(0..=59).contains(&minute) { + return Err(Error::InvalidTzString("invalid day time minute")); + } + if !(0..=59).contains(&second) { + return Err(Error::InvalidTzString("invalid day time second")); + } + + Ok(hour * 3600 + minute * 60 + second) +} + +/// Parse transition rule time with TZ string extensions +fn parse_rule_time_extended(cursor: &mut Cursor) -> Result { + let (sign, hour, minute, second) = parse_signed_hhmmss(cursor)?; + + if !(-167..=167).contains(&hour) { + return Err(Error::InvalidTzString("invalid day time hour")); + } + if !(0..=59).contains(&minute) { + return Err(Error::InvalidTzString("invalid day time minute")); + } + if !(0..=59).contains(&second) { + return Err(Error::InvalidTzString("invalid day time second")); + } + + Ok(sign * (hour * 3600 + minute * 60 + second)) +} + +/// Parse hours, minutes and seconds +fn parse_hhmmss(cursor: &mut Cursor) -> Result<(i32, i32, i32), Error> { + let hour = cursor.read_int()?; + + let mut minute = 0; + let mut second = 0; + + if cursor.read_optional_tag(b":")? { + minute = cursor.read_int()?; + + if cursor.read_optional_tag(b":")? { + second = cursor.read_int()?; + } + } + + Ok((hour, minute, second)) +} + +/// Parse signed hours, minutes and seconds +fn parse_signed_hhmmss(cursor: &mut Cursor) -> Result<(i32, i32, i32, i32), Error> { + let mut sign = 1; + if let Some(&c) = cursor.peek() { + if c == b'+' || c == b'-' { + cursor.read_exact(1)?; + if c == b'-' { + sign = -1; + } + } + } + + let (hour, minute, second) = parse_hhmmss(cursor)?; + Ok((sign, hour, minute, second)) +} + +/// Transition rule day +#[derive(Debug, Copy, Clone, Eq, PartialEq)] +enum RuleDay { + /// Julian day in `[1, 365]`, without taking occasional Feb 29 into account, which is not referenceable + Julian1WithoutLeap(u16), + /// Zero-based Julian day in `[0, 365]`, taking occasional Feb 29 into account + Julian0WithLeap(u16), + /// Day represented by a month, a month week and a week day + MonthWeekday { + /// Month in `[1, 12]` + month: u8, + /// Week of the month in `[1, 5]`, with `5` representing the last week of the month + week: u8, + /// Day of the week in `[0, 6]` from Sunday + week_day: u8, + }, +} + +impl RuleDay { + /// Parse transition rule + fn parse(cursor: &mut Cursor, use_string_extensions: bool) -> Result<(Self, i32), Error> { + let date = match cursor.peek() { + Some(b'M') => { + cursor.read_exact(1)?; + let month = cursor.read_int()?; + cursor.read_tag(b".")?; + let week = cursor.read_int()?; + cursor.read_tag(b".")?; + let week_day = cursor.read_int()?; + RuleDay::month_weekday(month, week, week_day)? + } + Some(b'J') => { + cursor.read_exact(1)?; + RuleDay::julian_1(cursor.read_int()?)? + } + _ => RuleDay::julian_0(cursor.read_int()?)?, + }; + + Ok(( + date, + match (cursor.read_optional_tag(b"/")?, use_string_extensions) { + (false, _) => 2 * 3600, + (true, true) => parse_rule_time_extended(cursor)?, + (true, false) => parse_rule_time(cursor)?, + }, + )) + } + + /// Construct a transition rule day represented by a Julian day in `[1, 365]`, without taking occasional Feb 29 into account, which is not referenceable + fn julian_1(julian_day_1: u16) -> Result { + if !(1..=365).contains(&julian_day_1) { + return Err(Error::TransitionRule("invalid rule day julian day")); + } + + Ok(RuleDay::Julian1WithoutLeap(julian_day_1)) + } + + /// Construct a transition rule day represented by a zero-based Julian day in `[0, 365]`, taking occasional Feb 29 into account + fn julian_0(julian_day_0: u16) -> Result { + if julian_day_0 > 365 { + return Err(Error::TransitionRule("invalid rule day julian day")); + } + + Ok(RuleDay::Julian0WithLeap(julian_day_0)) + } + + /// Construct a transition rule day represented by a month, a month week and a week day + fn month_weekday(month: u8, week: u8, week_day: u8) -> Result { + if !(1..=12).contains(&month) { + return Err(Error::TransitionRule("invalid rule day month")); + } + + if !(1..=5).contains(&week) { + return Err(Error::TransitionRule("invalid rule day week")); + } + + if week_day > 6 { + return Err(Error::TransitionRule("invalid rule day week day")); + } + + Ok(RuleDay::MonthWeekday { month, week, week_day }) + } + + /// Get the transition date for the provided year + /// + /// ## Outputs + /// + /// * `month`: Month in `[1, 12]` + /// * `month_day`: Day of the month in `[1, 31]` + fn transition_date(&self, year: i32) -> (usize, i64) { + match *self { + RuleDay::Julian1WithoutLeap(year_day) => { + let year_day = year_day as i64; + + let month = match CUMUL_DAY_IN_MONTHS_NORMAL_YEAR.binary_search(&(year_day - 1)) { + Ok(x) => x + 1, + Err(x) => x, + }; + + let month_day = year_day - CUMUL_DAY_IN_MONTHS_NORMAL_YEAR[month - 1]; + + (month, month_day) + } + RuleDay::Julian0WithLeap(year_day) => { + let leap = is_leap_year(year) as i64; + + let cumul_day_in_months = [ + 0, + 31, + 59 + leap, + 90 + leap, + 120 + leap, + 151 + leap, + 181 + leap, + 212 + leap, + 243 + leap, + 273 + leap, + 304 + leap, + 334 + leap, + ]; + + let year_day = year_day as i64; + + let month = match cumul_day_in_months.binary_search(&year_day) { + Ok(x) => x + 1, + Err(x) => x, + }; + + let month_day = 1 + year_day - cumul_day_in_months[month - 1]; + + (month, month_day) + } + RuleDay::MonthWeekday { month: rule_month, week, week_day } => { + let leap = is_leap_year(year) as i64; + + let month = rule_month as usize; + + let mut day_in_month = DAY_IN_MONTHS_NORMAL_YEAR[month - 1]; + if month == 2 { + day_in_month += leap; + } + + let week_day_of_first_month_day = + rem_euclid(4 + days_since_unix_epoch(year, month, 1), DAYS_PER_WEEK); + let first_week_day_occurence_in_month = + 1 + rem_euclid(week_day as i64 - week_day_of_first_month_day, DAYS_PER_WEEK); + + let mut month_day = + first_week_day_occurence_in_month + (week as i64 - 1) * DAYS_PER_WEEK; + if month_day > day_in_month { + month_day -= DAYS_PER_WEEK + } + + (month, month_day) + } + } + } + + /// Returns the UTC Unix time in seconds associated to the transition date for the provided year + fn unix_time(&self, year: i32, day_time_in_utc: i64) -> i64 { + let (month, month_day) = self.transition_date(year); + days_since_unix_epoch(year, month, month_day) * SECONDS_PER_DAY + day_time_in_utc + } +} + +/// UTC date time exprimed in the [proleptic gregorian calendar](https://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar) +#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd)] +pub(crate) struct UtcDateTime { + /// Year + pub(crate) year: i32, + /// Month in `[1, 12]` + pub(crate) month: u8, + /// Day of the month in `[1, 31]` + pub(crate) month_day: u8, + /// Hours since midnight in `[0, 23]` + pub(crate) hour: u8, + /// Minutes in `[0, 59]` + pub(crate) minute: u8, + /// Seconds in `[0, 60]`, with a possible leap second + pub(crate) second: u8, +} + +impl UtcDateTime { + /// Construct a UTC date time from a Unix time in seconds and nanoseconds + pub(crate) fn from_timespec(unix_time: i64) -> Result { + let seconds = match unix_time.checked_sub(UNIX_OFFSET_SECS) { + Some(seconds) => seconds, + None => return Err(Error::OutOfRange("out of range operation")), + }; + + let mut remaining_days = seconds / SECONDS_PER_DAY; + let mut remaining_seconds = seconds % SECONDS_PER_DAY; + if remaining_seconds < 0 { + remaining_seconds += SECONDS_PER_DAY; + remaining_days -= 1; + } + + let mut cycles_400_years = remaining_days / DAYS_PER_400_YEARS; + remaining_days %= DAYS_PER_400_YEARS; + if remaining_days < 0 { + remaining_days += DAYS_PER_400_YEARS; + cycles_400_years -= 1; + } + + let cycles_100_years = Ord::min(remaining_days / DAYS_PER_100_YEARS, 3); + remaining_days -= cycles_100_years * DAYS_PER_100_YEARS; + + let cycles_4_years = Ord::min(remaining_days / DAYS_PER_4_YEARS, 24); + remaining_days -= cycles_4_years * DAYS_PER_4_YEARS; + + let remaining_years = Ord::min(remaining_days / DAYS_PER_NORMAL_YEAR, 3); + remaining_days -= remaining_years * DAYS_PER_NORMAL_YEAR; + + let mut year = OFFSET_YEAR + + remaining_years + + cycles_4_years * 4 + + cycles_100_years * 100 + + cycles_400_years * 400; + + let mut month = 0; + while month < DAY_IN_MONTHS_LEAP_YEAR_FROM_MARCH.len() { + let days = DAY_IN_MONTHS_LEAP_YEAR_FROM_MARCH[month]; + if remaining_days < days { + break; + } + remaining_days -= days; + month += 1; + } + month += 2; + + if month >= MONTHS_PER_YEAR as usize { + month -= MONTHS_PER_YEAR as usize; + year += 1; + } + month += 1; + + let month_day = 1 + remaining_days; + + let hour = remaining_seconds / SECONDS_PER_HOUR; + let minute = (remaining_seconds / SECONDS_PER_MINUTE) % MINUTES_PER_HOUR; + let second = remaining_seconds % SECONDS_PER_MINUTE; + + let year = match year >= i32::min_value() as i64 && year <= i32::max_value() as i64 { + true => year as i32, + false => return Err(Error::OutOfRange("i64 is out of range for i32")), + }; + + Ok(Self { + year, + month: month as u8, + month_day: month_day as u8, + hour: hour as u8, + minute: minute as u8, + second: second as u8, + }) + } +} + +/// Number of nanoseconds in one second +const NANOSECONDS_PER_SECOND: u32 = 1_000_000_000; +/// Number of seconds in one minute +const SECONDS_PER_MINUTE: i64 = 60; +/// Number of seconds in one hour +const SECONDS_PER_HOUR: i64 = 3600; +/// Number of minutes in one hour +const MINUTES_PER_HOUR: i64 = 60; +/// Number of months in one year +const MONTHS_PER_YEAR: i64 = 12; +/// Number of days in a normal year +const DAYS_PER_NORMAL_YEAR: i64 = 365; +/// Number of days in 4 years (including 1 leap year) +const DAYS_PER_4_YEARS: i64 = DAYS_PER_NORMAL_YEAR * 4 + 1; +/// Number of days in 100 years (including 24 leap years) +const DAYS_PER_100_YEARS: i64 = DAYS_PER_NORMAL_YEAR * 100 + 24; +/// Number of days in 400 years (including 97 leap years) +const DAYS_PER_400_YEARS: i64 = DAYS_PER_NORMAL_YEAR * 400 + 97; +/// Unix time at `2000-03-01T00:00:00Z` (Wednesday) +const UNIX_OFFSET_SECS: i64 = 951868800; +/// Offset year +const OFFSET_YEAR: i64 = 2000; +/// Month days in a leap year from March +const DAY_IN_MONTHS_LEAP_YEAR_FROM_MARCH: [i64; 12] = + [31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 31, 29]; + +/// Compute the number of days since Unix epoch (`1970-01-01T00:00:00Z`). +/// +/// ## Inputs +/// +/// * `year`: Year +/// * `month`: Month in `[1, 12]` +/// * `month_day`: Day of the month in `[1, 31]` +pub(crate) fn days_since_unix_epoch(year: i32, month: usize, month_day: i64) -> i64 { + let is_leap_year = is_leap_year(year); + + let year = year as i64; + + let mut result = (year - 1970) * 365; + + if year >= 1970 { + result += (year - 1968) / 4; + result -= (year - 1900) / 100; + result += (year - 1600) / 400; + + if is_leap_year && month < 3 { + result -= 1; + } + } else { + result += (year - 1972) / 4; + result -= (year - 2000) / 100; + result += (year - 2000) / 400; + + if is_leap_year && month >= 3 { + result += 1; + } + } + + result += CUMUL_DAY_IN_MONTHS_NORMAL_YEAR[month - 1] + month_day - 1; + + result +} + +/// Check if a year is a leap year +pub(crate) fn is_leap_year(year: i32) -> bool { + year % 400 == 0 || (year % 4 == 0 && year % 100 != 0) +} + +#[cfg(test)] +mod tests { + use super::super::timezone::Transition; + use super::super::{Error, TimeZone}; + use super::{AlternateTime, LocalTimeType, RuleDay, TransitionRule}; + use crate::matches; + + #[test] + fn test_quoted() -> Result<(), Error> { + let transition_rule = TransitionRule::from_tz_string(b"<-03>+3<+03>-3,J1,J365", false)?; + assert_eq!( + transition_rule, + AlternateTime::new( + LocalTimeType::new(-10800, false, Some(b"-03"))?, + LocalTimeType::new(10800, true, Some(b"+03"))?, + RuleDay::julian_1(1)?, + 7200, + RuleDay::julian_1(365)?, + 7200, + )? + .into() + ); + Ok(()) + } + + #[test] + fn test_full() -> Result<(), Error> { + let tz_string = b"NZST-12:00:00NZDT-13:00:00,M10.1.0/02:00:00,M3.3.0/02:00:00"; + let transition_rule = TransitionRule::from_tz_string(tz_string, false)?; + assert_eq!( + transition_rule, + AlternateTime::new( + LocalTimeType::new(43200, false, Some(b"NZST"))?, + LocalTimeType::new(46800, true, Some(b"NZDT"))?, + RuleDay::month_weekday(10, 1, 0)?, + 7200, + RuleDay::month_weekday(3, 3, 0)?, + 7200, + )? + .into() + ); + Ok(()) + } + + #[test] + fn test_negative_dst() -> Result<(), Error> { + let tz_string = b"IST-1GMT0,M10.5.0,M3.5.0/1"; + let transition_rule = TransitionRule::from_tz_string(tz_string, false)?; + assert_eq!( + transition_rule, + AlternateTime::new( + LocalTimeType::new(3600, false, Some(b"IST"))?, + LocalTimeType::new(0, true, Some(b"GMT"))?, + RuleDay::month_weekday(10, 5, 0)?, + 7200, + RuleDay::month_weekday(3, 5, 0)?, + 3600, + )? + .into() + ); + Ok(()) + } + + #[test] + fn test_negative_hour() -> Result<(), Error> { + let tz_string = b"<-03>3<-02>,M3.5.0/-2,M10.5.0/-1"; + assert!(TransitionRule::from_tz_string(tz_string, false).is_err()); + + assert_eq!( + TransitionRule::from_tz_string(tz_string, true)?, + AlternateTime::new( + LocalTimeType::new(-10800, false, Some(b"-03"))?, + LocalTimeType::new(-7200, true, Some(b"-02"))?, + RuleDay::month_weekday(3, 5, 0)?, + -7200, + RuleDay::month_weekday(10, 5, 0)?, + -3600, + )? + .into() + ); + Ok(()) + } + + #[test] + fn test_all_year_dst() -> Result<(), Error> { + let tz_string = b"EST5EDT,0/0,J365/25"; + assert!(TransitionRule::from_tz_string(tz_string, false).is_err()); + + assert_eq!( + TransitionRule::from_tz_string(tz_string, true)?, + AlternateTime::new( + LocalTimeType::new(-18000, false, Some(b"EST"))?, + LocalTimeType::new(-14400, true, Some(b"EDT"))?, + RuleDay::julian_0(0)?, + 0, + RuleDay::julian_1(365)?, + 90000, + )? + .into() + ); + Ok(()) + } + + #[test] + fn test_v3_file() -> Result<(), Error> { + let bytes = b"TZif3\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\x04\0\0\x1c\x20\0\0IST\0TZif3\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\x01\0\0\0\0\0\0\0\x01\0\0\0\x01\0\0\0\x04\0\0\0\0\x7f\xe8\x17\x80\0\0\0\x1c\x20\0\0IST\0\x01\x01\x0aIST-2IDT,M3.4.4/26,M10.5.0\x0a"; + + let time_zone = TimeZone::from_tz_data(bytes)?; + + let time_zone_result = TimeZone::new( + vec![Transition::new(2145916800, 0)], + vec![LocalTimeType::new(7200, false, Some(b"IST"))?], + Vec::new(), + Some(TransitionRule::from(AlternateTime::new( + LocalTimeType::new(7200, false, Some(b"IST"))?, + LocalTimeType::new(10800, true, Some(b"IDT"))?, + RuleDay::month_weekday(3, 4, 4)?, + 93600, + RuleDay::month_weekday(10, 5, 0)?, + 7200, + )?)), + )?; + + assert_eq!(time_zone, time_zone_result); + + Ok(()) + } + + #[test] + fn test_rule_day() -> Result<(), Error> { + let rule_day_j1 = RuleDay::julian_1(60)?; + assert_eq!(rule_day_j1.transition_date(2000), (3, 1)); + assert_eq!(rule_day_j1.transition_date(2001), (3, 1)); + assert_eq!(rule_day_j1.unix_time(2000, 43200), 951912000); + + let rule_day_j0 = RuleDay::julian_0(59)?; + assert_eq!(rule_day_j0.transition_date(2000), (2, 29)); + assert_eq!(rule_day_j0.transition_date(2001), (3, 1)); + assert_eq!(rule_day_j0.unix_time(2000, 43200), 951825600); + + let rule_day_mwd = RuleDay::month_weekday(2, 5, 2)?; + assert_eq!(rule_day_mwd.transition_date(2000), (2, 29)); + assert_eq!(rule_day_mwd.transition_date(2001), (2, 27)); + assert_eq!(rule_day_mwd.unix_time(2000, 43200), 951825600); + assert_eq!(rule_day_mwd.unix_time(2001, 43200), 983275200); + + Ok(()) + } + + #[test] + fn test_transition_rule() -> Result<(), Error> { + let transition_rule_fixed = TransitionRule::from(LocalTimeType::new(-36000, false, None)?); + assert_eq!(transition_rule_fixed.find_local_time_type(0)?.offset(), -36000); + + let transition_rule_dst = TransitionRule::from(AlternateTime::new( + LocalTimeType::new(43200, false, Some(b"NZST"))?, + LocalTimeType::new(46800, true, Some(b"NZDT"))?, + RuleDay::month_weekday(10, 1, 0)?, + 7200, + RuleDay::month_weekday(3, 3, 0)?, + 7200, + )?); + + assert_eq!(transition_rule_dst.find_local_time_type(953384399)?.offset(), 46800); + assert_eq!(transition_rule_dst.find_local_time_type(953384400)?.offset(), 43200); + assert_eq!(transition_rule_dst.find_local_time_type(970322399)?.offset(), 43200); + assert_eq!(transition_rule_dst.find_local_time_type(970322400)?.offset(), 46800); + + let transition_rule_negative_dst = TransitionRule::from(AlternateTime::new( + LocalTimeType::new(3600, false, Some(b"IST"))?, + LocalTimeType::new(0, true, Some(b"GMT"))?, + RuleDay::month_weekday(10, 5, 0)?, + 7200, + RuleDay::month_weekday(3, 5, 0)?, + 3600, + )?); + + assert_eq!(transition_rule_negative_dst.find_local_time_type(954032399)?.offset(), 0); + assert_eq!(transition_rule_negative_dst.find_local_time_type(954032400)?.offset(), 3600); + assert_eq!(transition_rule_negative_dst.find_local_time_type(972781199)?.offset(), 3600); + assert_eq!(transition_rule_negative_dst.find_local_time_type(972781200)?.offset(), 0); + + let transition_rule_negative_time_1 = TransitionRule::from(AlternateTime::new( + LocalTimeType::new(0, false, None)?, + LocalTimeType::new(0, true, None)?, + RuleDay::julian_0(100)?, + 0, + RuleDay::julian_0(101)?, + -86500, + )?); + + assert!(transition_rule_negative_time_1.find_local_time_type(8639899)?.is_dst()); + assert!(!transition_rule_negative_time_1.find_local_time_type(8639900)?.is_dst()); + assert!(!transition_rule_negative_time_1.find_local_time_type(8639999)?.is_dst()); + assert!(transition_rule_negative_time_1.find_local_time_type(8640000)?.is_dst()); + + let transition_rule_negative_time_2 = TransitionRule::from(AlternateTime::new( + LocalTimeType::new(-10800, false, Some(b"-03"))?, + LocalTimeType::new(-7200, true, Some(b"-02"))?, + RuleDay::month_weekday(3, 5, 0)?, + -7200, + RuleDay::month_weekday(10, 5, 0)?, + -3600, + )?); + + assert_eq!( + transition_rule_negative_time_2.find_local_time_type(954032399)?.offset(), + -10800 + ); + assert_eq!( + transition_rule_negative_time_2.find_local_time_type(954032400)?.offset(), + -7200 + ); + assert_eq!( + transition_rule_negative_time_2.find_local_time_type(972781199)?.offset(), + -7200 + ); + assert_eq!( + transition_rule_negative_time_2.find_local_time_type(972781200)?.offset(), + -10800 + ); + + let transition_rule_all_year_dst = TransitionRule::from(AlternateTime::new( + LocalTimeType::new(-18000, false, Some(b"EST"))?, + LocalTimeType::new(-14400, true, Some(b"EDT"))?, + RuleDay::julian_0(0)?, + 0, + RuleDay::julian_1(365)?, + 90000, + )?); + + assert_eq!(transition_rule_all_year_dst.find_local_time_type(946702799)?.offset(), -14400); + assert_eq!(transition_rule_all_year_dst.find_local_time_type(946702800)?.offset(), -14400); + + Ok(()) + } + + #[test] + fn test_transition_rule_overflow() -> Result<(), Error> { + let transition_rule_1 = TransitionRule::from(AlternateTime::new( + LocalTimeType::new(-1, false, None)?, + LocalTimeType::new(-1, true, None)?, + RuleDay::julian_1(365)?, + 0, + RuleDay::julian_1(1)?, + 0, + )?); + + let transition_rule_2 = TransitionRule::from(AlternateTime::new( + LocalTimeType::new(1, false, None)?, + LocalTimeType::new(1, true, None)?, + RuleDay::julian_1(365)?, + 0, + RuleDay::julian_1(1)?, + 0, + )?); + + let min_unix_time = -67768100567971200; + let max_unix_time = 67767976233532799; + + assert!(matches!( + transition_rule_1.find_local_time_type(min_unix_time), + Err(Error::OutOfRange(_)) + )); + assert!(matches!( + transition_rule_2.find_local_time_type(max_unix_time), + Err(Error::OutOfRange(_)) + )); + + Ok(()) + } +} diff --git a/javascript-engine/external/chrono/src/offset/local/tz_info/timezone.rs b/javascript-engine/external/chrono/src/offset/local/tz_info/timezone.rs new file mode 100644 index 0000000..ae6fb5f --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/local/tz_info/timezone.rs @@ -0,0 +1,904 @@ +//! Types related to a time zone. + +use std::fs::{self, File}; +use std::io::{self, Read}; +use std::path::{Path, PathBuf}; +use std::{cmp::Ordering, fmt, str}; + +use super::rule::{AlternateTime, TransitionRule}; +use super::{parser, Error, DAYS_PER_WEEK, SECONDS_PER_DAY}; + +/// Time zone +#[derive(Debug, Clone, Eq, PartialEq)] +pub(crate) struct TimeZone { + /// List of transitions + transitions: Vec, + /// List of local time types (cannot be empty) + local_time_types: Vec, + /// List of leap seconds + leap_seconds: Vec, + /// Extra transition rule applicable after the last transition + extra_rule: Option, +} + +impl TimeZone { + /// Returns local time zone. + /// + /// This method in not supported on non-UNIX platforms, and returns the UTC time zone instead. + /// + pub(crate) fn local(env_tz: Option<&str>) -> Result { + match env_tz { + Some(tz) => Self::from_posix_tz(tz), + None => Self::from_posix_tz("localtime"), + } + } + + /// Construct a time zone from a POSIX TZ string, as described in [the POSIX documentation of the `TZ` environment variable](https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html). + fn from_posix_tz(tz_string: &str) -> Result { + if tz_string.is_empty() { + return Err(Error::InvalidTzString("empty TZ string")); + } + + if tz_string == "localtime" { + return Self::from_tz_data(&fs::read("/etc/localtime")?); + } + + let mut chars = tz_string.chars(); + if chars.next() == Some(':') { + return Self::from_file(&mut find_tz_file(chars.as_str())?); + } + + if let Ok(mut file) = find_tz_file(tz_string) { + return Self::from_file(&mut file); + } + + // TZ string extensions are not allowed + let tz_string = tz_string.trim_matches(|c: char| c.is_ascii_whitespace()); + let rule = TransitionRule::from_tz_string(tz_string.as_bytes(), false)?; + Self::new( + vec![], + match rule { + TransitionRule::Fixed(local_time_type) => vec![local_time_type], + TransitionRule::Alternate(AlternateTime { std, dst, .. }) => vec![std, dst], + }, + vec![], + Some(rule), + ) + } + + /// Construct a time zone + pub(super) fn new( + transitions: Vec, + local_time_types: Vec, + leap_seconds: Vec, + extra_rule: Option, + ) -> Result { + let new = Self { transitions, local_time_types, leap_seconds, extra_rule }; + new.as_ref().validate()?; + Ok(new) + } + + /// Construct a time zone from the contents of a time zone file + fn from_file(file: &mut File) -> Result { + let mut bytes = Vec::new(); + file.read_to_end(&mut bytes)?; + Self::from_tz_data(&bytes) + } + + /// Construct a time zone from the contents of a time zone file + /// + /// Parse TZif data as described in [RFC 8536](https://datatracker.ietf.org/doc/html/rfc8536). + pub(crate) fn from_tz_data(bytes: &[u8]) -> Result { + parser::parse(bytes) + } + + /// Construct a time zone with the specified UTC offset in seconds + fn fixed(ut_offset: i32) -> Result { + Ok(Self { + transitions: Vec::new(), + local_time_types: vec![LocalTimeType::with_offset(ut_offset)?], + leap_seconds: Vec::new(), + extra_rule: None, + }) + } + + /// Construct the time zone associated to UTC + pub(crate) fn utc() -> Self { + Self { + transitions: Vec::new(), + local_time_types: vec![LocalTimeType::UTC], + leap_seconds: Vec::new(), + extra_rule: None, + } + } + + /// Find the local time type associated to the time zone at the specified Unix time in seconds + pub(crate) fn find_local_time_type(&self, unix_time: i64) -> Result<&LocalTimeType, Error> { + self.as_ref().find_local_time_type(unix_time) + } + + // should we pass NaiveDateTime all the way through to this fn? + pub(crate) fn find_local_time_type_from_local( + &self, + local_time: i64, + year: i32, + ) -> Result, Error> { + self.as_ref().find_local_time_type_from_local(local_time, year) + } + + /// Returns a reference to the time zone + fn as_ref(&self) -> TimeZoneRef { + TimeZoneRef { + transitions: &self.transitions, + local_time_types: &self.local_time_types, + leap_seconds: &self.leap_seconds, + extra_rule: &self.extra_rule, + } + } +} + +/// Reference to a time zone +#[derive(Debug, Copy, Clone, Eq, PartialEq)] +pub(crate) struct TimeZoneRef<'a> { + /// List of transitions + transitions: &'a [Transition], + /// List of local time types (cannot be empty) + local_time_types: &'a [LocalTimeType], + /// List of leap seconds + leap_seconds: &'a [LeapSecond], + /// Extra transition rule applicable after the last transition + extra_rule: &'a Option, +} + +impl<'a> TimeZoneRef<'a> { + /// Find the local time type associated to the time zone at the specified Unix time in seconds + pub(crate) fn find_local_time_type(&self, unix_time: i64) -> Result<&'a LocalTimeType, Error> { + let extra_rule = match self.transitions.last() { + None => match self.extra_rule { + Some(extra_rule) => extra_rule, + None => return Ok(&self.local_time_types[0]), + }, + Some(last_transition) => { + let unix_leap_time = match self.unix_time_to_unix_leap_time(unix_time) { + Ok(unix_leap_time) => unix_leap_time, + Err(Error::OutOfRange(error)) => return Err(Error::FindLocalTimeType(error)), + Err(err) => return Err(err), + }; + + if unix_leap_time >= last_transition.unix_leap_time { + match self.extra_rule { + Some(extra_rule) => extra_rule, + None => { + return Err(Error::FindLocalTimeType( + "no local time type is available for the specified timestamp", + )) + } + } + } else { + let index = match self + .transitions + .binary_search_by_key(&unix_leap_time, Transition::unix_leap_time) + { + Ok(x) => x + 1, + Err(x) => x, + }; + + let local_time_type_index = if index > 0 { + self.transitions[index - 1].local_time_type_index + } else { + 0 + }; + return Ok(&self.local_time_types[local_time_type_index]); + } + } + }; + + match extra_rule.find_local_time_type(unix_time) { + Ok(local_time_type) => Ok(local_time_type), + Err(Error::OutOfRange(error)) => Err(Error::FindLocalTimeType(error)), + err => err, + } + } + + pub(crate) fn find_local_time_type_from_local( + &self, + local_time: i64, + year: i32, + ) -> Result, Error> { + // #TODO: this is wrong as we need 'local_time_to_local_leap_time ? + // but ... does the local time even include leap seconds ?? + // let unix_leap_time = match self.unix_time_to_unix_leap_time(local_time) { + // Ok(unix_leap_time) => unix_leap_time, + // Err(Error::OutOfRange(error)) => return Err(Error::FindLocalTimeType(error)), + // Err(err) => return Err(err), + // }; + let local_leap_time = local_time; + + // if we have at least one transition, + // we must check _all_ of them, incase of any Overlapping (LocalResult::Ambiguous) or Skipping (LocalResult::None) transitions + if !self.transitions.is_empty() { + let mut prev = Some(self.local_time_types[0]); + + for transition in self.transitions { + let after_ltt = self.local_time_types[transition.local_time_type_index]; + + // the end and start here refers to where the time starts prior to the transition + // and where it ends up after. not the temporal relationship. + let transition_end = transition.unix_leap_time + i64::from(after_ltt.ut_offset); + let transition_start = + transition.unix_leap_time + i64::from(prev.unwrap().ut_offset); + + match transition_start.cmp(&transition_end) { + Ordering::Greater => { + // bakwards transition, eg from DST to regular + // this means a given local time could have one of two possible offsets + if local_leap_time < transition_end { + return Ok(crate::LocalResult::Single(prev.unwrap())); + } else if local_leap_time >= transition_end + && local_leap_time <= transition_start + { + if prev.unwrap().ut_offset < after_ltt.ut_offset { + return Ok(crate::LocalResult::Ambiguous(prev.unwrap(), after_ltt)); + } else { + return Ok(crate::LocalResult::Ambiguous(after_ltt, prev.unwrap())); + } + } + } + Ordering::Equal => { + // should this ever happen? presumably we have to handle it anyway. + if local_leap_time < transition_start { + return Ok(crate::LocalResult::Single(prev.unwrap())); + } else if local_leap_time == transition_end { + if prev.unwrap().ut_offset < after_ltt.ut_offset { + return Ok(crate::LocalResult::Ambiguous(prev.unwrap(), after_ltt)); + } else { + return Ok(crate::LocalResult::Ambiguous(after_ltt, prev.unwrap())); + } + } + } + Ordering::Less => { + // forwards transition, eg from regular to DST + // this means that times that are skipped are invalid local times + if local_leap_time <= transition_start { + return Ok(crate::LocalResult::Single(prev.unwrap())); + } else if local_leap_time < transition_end { + return Ok(crate::LocalResult::None); + } else if local_leap_time == transition_end { + return Ok(crate::LocalResult::Single(after_ltt)); + } + } + } + + // try the next transition, we are fully after this one + prev = Some(after_ltt); + } + }; + + if let Some(extra_rule) = self.extra_rule { + match extra_rule.find_local_time_type_from_local(local_time, year) { + Ok(local_time_type) => Ok(local_time_type), + Err(Error::OutOfRange(error)) => Err(Error::FindLocalTimeType(error)), + err => err, + } + } else { + Ok(crate::LocalResult::Single(self.local_time_types[0])) + } + } + + /// Check time zone inputs + fn validate(&self) -> Result<(), Error> { + // Check local time types + let local_time_types_size = self.local_time_types.len(); + if local_time_types_size == 0 { + return Err(Error::TimeZone("list of local time types must not be empty")); + } + + // Check transitions + let mut i_transition = 0; + while i_transition < self.transitions.len() { + if self.transitions[i_transition].local_time_type_index >= local_time_types_size { + return Err(Error::TimeZone("invalid local time type index")); + } + + if i_transition + 1 < self.transitions.len() + && self.transitions[i_transition].unix_leap_time + >= self.transitions[i_transition + 1].unix_leap_time + { + return Err(Error::TimeZone("invalid transition")); + } + + i_transition += 1; + } + + // Check leap seconds + if !(self.leap_seconds.is_empty() + || self.leap_seconds[0].unix_leap_time >= 0 + && saturating_abs(self.leap_seconds[0].correction) == 1) + { + return Err(Error::TimeZone("invalid leap second")); + } + + let min_interval = SECONDS_PER_28_DAYS - 1; + + let mut i_leap_second = 0; + while i_leap_second < self.leap_seconds.len() { + if i_leap_second + 1 < self.leap_seconds.len() { + let x0 = &self.leap_seconds[i_leap_second]; + let x1 = &self.leap_seconds[i_leap_second + 1]; + + let diff_unix_leap_time = x1.unix_leap_time.saturating_sub(x0.unix_leap_time); + let abs_diff_correction = + saturating_abs(x1.correction.saturating_sub(x0.correction)); + + if !(diff_unix_leap_time >= min_interval && abs_diff_correction == 1) { + return Err(Error::TimeZone("invalid leap second")); + } + } + i_leap_second += 1; + } + + // Check extra rule + let (extra_rule, last_transition) = match (&self.extra_rule, self.transitions.last()) { + (Some(rule), Some(trans)) => (rule, trans), + _ => return Ok(()), + }; + + let last_local_time_type = &self.local_time_types[last_transition.local_time_type_index]; + let unix_time = match self.unix_leap_time_to_unix_time(last_transition.unix_leap_time) { + Ok(unix_time) => unix_time, + Err(Error::OutOfRange(error)) => return Err(Error::TimeZone(error)), + Err(err) => return Err(err), + }; + + let rule_local_time_type = match extra_rule.find_local_time_type(unix_time) { + Ok(rule_local_time_type) => rule_local_time_type, + Err(Error::OutOfRange(error)) => return Err(Error::TimeZone(error)), + Err(err) => return Err(err), + }; + + let check = last_local_time_type.ut_offset == rule_local_time_type.ut_offset + && last_local_time_type.is_dst == rule_local_time_type.is_dst + && match (&last_local_time_type.name, &rule_local_time_type.name) { + (Some(x), Some(y)) => x.equal(y), + (None, None) => true, + _ => false, + }; + + if !check { + return Err(Error::TimeZone( + "extra transition rule is inconsistent with the last transition", + )); + } + + Ok(()) + } + + /// Convert Unix time to Unix leap time, from the list of leap seconds in a time zone + fn unix_time_to_unix_leap_time(&self, unix_time: i64) -> Result { + let mut unix_leap_time = unix_time; + + let mut i = 0; + while i < self.leap_seconds.len() { + let leap_second = &self.leap_seconds[i]; + + if unix_leap_time < leap_second.unix_leap_time { + break; + } + + unix_leap_time = match unix_time.checked_add(leap_second.correction as i64) { + Some(unix_leap_time) => unix_leap_time, + None => return Err(Error::OutOfRange("out of range operation")), + }; + + i += 1; + } + + Ok(unix_leap_time) + } + + /// Convert Unix leap time to Unix time, from the list of leap seconds in a time zone + fn unix_leap_time_to_unix_time(&self, unix_leap_time: i64) -> Result { + if unix_leap_time == i64::min_value() { + return Err(Error::OutOfRange("out of range operation")); + } + + let index = match self + .leap_seconds + .binary_search_by_key(&(unix_leap_time - 1), LeapSecond::unix_leap_time) + { + Ok(x) => x + 1, + Err(x) => x, + }; + + let correction = if index > 0 { self.leap_seconds[index - 1].correction } else { 0 }; + + match unix_leap_time.checked_sub(correction as i64) { + Some(unix_time) => Ok(unix_time), + None => Err(Error::OutOfRange("out of range operation")), + } + } + + /// The UTC time zone + const UTC: TimeZoneRef<'static> = TimeZoneRef { + transitions: &[], + local_time_types: &[LocalTimeType::UTC], + leap_seconds: &[], + extra_rule: &None, + }; +} + +/// Transition of a TZif file +#[derive(Debug, Copy, Clone, Eq, PartialEq)] +pub(super) struct Transition { + /// Unix leap time + unix_leap_time: i64, + /// Index specifying the local time type of the transition + local_time_type_index: usize, +} + +impl Transition { + /// Construct a TZif file transition + pub(super) fn new(unix_leap_time: i64, local_time_type_index: usize) -> Self { + Self { unix_leap_time, local_time_type_index } + } + + /// Returns Unix leap time + fn unix_leap_time(&self) -> i64 { + self.unix_leap_time + } +} + +/// Leap second of a TZif file +#[derive(Debug, Copy, Clone, Eq, PartialEq)] +pub(super) struct LeapSecond { + /// Unix leap time + unix_leap_time: i64, + /// Leap second correction + correction: i32, +} + +impl LeapSecond { + /// Construct a TZif file leap second + pub(super) fn new(unix_leap_time: i64, correction: i32) -> Self { + Self { unix_leap_time, correction } + } + + /// Returns Unix leap time + fn unix_leap_time(&self) -> i64 { + self.unix_leap_time + } +} + +/// ASCII-encoded fixed-capacity string, used for storing time zone names +#[derive(Copy, Clone, Eq, PartialEq)] +struct TimeZoneName { + /// Length-prefixed string buffer + bytes: [u8; 8], +} + +impl TimeZoneName { + /// Construct a time zone name + fn new(input: &[u8]) -> Result { + let len = input.len(); + + if !(3..=7).contains(&len) { + return Err(Error::LocalTimeType( + "time zone name must have between 3 and 7 characters", + )); + } + + let mut bytes = [0; 8]; + bytes[0] = input.len() as u8; + + let mut i = 0; + while i < len { + let b = input[i]; + match b { + b'0'..=b'9' | b'A'..=b'Z' | b'a'..=b'z' | b'+' | b'-' => {} + _ => return Err(Error::LocalTimeType("invalid characters in time zone name")), + } + + bytes[i + 1] = b; + i += 1; + } + + Ok(Self { bytes }) + } + + /// Returns time zone name as a byte slice + fn as_bytes(&self) -> &[u8] { + match self.bytes[0] { + 3 => &self.bytes[1..4], + 4 => &self.bytes[1..5], + 5 => &self.bytes[1..6], + 6 => &self.bytes[1..7], + 7 => &self.bytes[1..8], + _ => unreachable!(), + } + } + + /// Check if two time zone names are equal + fn equal(&self, other: &Self) -> bool { + self.bytes == other.bytes + } +} + +impl AsRef for TimeZoneName { + fn as_ref(&self) -> &str { + // SAFETY: ASCII is valid UTF-8 + unsafe { str::from_utf8_unchecked(self.as_bytes()) } + } +} + +impl fmt::Debug for TimeZoneName { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.as_ref().fmt(f) + } +} + +/// Local time type associated to a time zone +#[derive(Debug, Copy, Clone, Eq, PartialEq)] +pub(crate) struct LocalTimeType { + /// Offset from UTC in seconds + pub(super) ut_offset: i32, + /// Daylight Saving Time indicator + is_dst: bool, + /// Time zone name + name: Option, +} + +impl LocalTimeType { + /// Construct a local time type + pub(super) fn new(ut_offset: i32, is_dst: bool, name: Option<&[u8]>) -> Result { + if ut_offset == i32::min_value() { + return Err(Error::LocalTimeType("invalid UTC offset")); + } + + let name = match name { + Some(name) => TimeZoneName::new(name)?, + None => return Ok(Self { ut_offset, is_dst, name: None }), + }; + + Ok(Self { ut_offset, is_dst, name: Some(name) }) + } + + /// Construct a local time type with the specified UTC offset in seconds + pub(super) fn with_offset(ut_offset: i32) -> Result { + if ut_offset == i32::min_value() { + return Err(Error::LocalTimeType("invalid UTC offset")); + } + + Ok(Self { ut_offset, is_dst: false, name: None }) + } + + /// Returns offset from UTC in seconds + pub(crate) fn offset(&self) -> i32 { + self.ut_offset + } + + /// Returns daylight saving time indicator + pub(super) fn is_dst(&self) -> bool { + self.is_dst + } + + pub(super) const UTC: LocalTimeType = Self { ut_offset: 0, is_dst: false, name: None }; +} + +/// Open the TZif file corresponding to a TZ string +fn find_tz_file(path: impl AsRef) -> Result { + // Don't check system timezone directories on non-UNIX platforms + #[cfg(not(unix))] + return Ok(File::open(path)?); + + #[cfg(unix)] + { + let path = path.as_ref(); + if path.is_absolute() { + return Ok(File::open(path)?); + } + + for folder in &ZONE_INFO_DIRECTORIES { + if let Ok(file) = File::open(PathBuf::from(folder).join(path)) { + return Ok(file); + } + } + + Err(Error::Io(io::ErrorKind::NotFound.into())) + } +} + +#[inline] +fn saturating_abs(v: i32) -> i32 { + if v.is_positive() { + v + } else if v == i32::min_value() { + i32::max_value() + } else { + -v + } +} + +// Possible system timezone directories +#[cfg(unix)] +const ZONE_INFO_DIRECTORIES: [&str; 3] = + ["/usr/share/zoneinfo", "/share/zoneinfo", "/etc/zoneinfo"]; + +/// Number of seconds in one week +pub(crate) const SECONDS_PER_WEEK: i64 = SECONDS_PER_DAY * DAYS_PER_WEEK; +/// Number of seconds in 28 days +const SECONDS_PER_28_DAYS: i64 = SECONDS_PER_DAY * 28; + +#[cfg(test)] +mod tests { + use super::super::Error; + use super::{LeapSecond, LocalTimeType, TimeZone, TimeZoneName, Transition, TransitionRule}; + use crate::matches; + + #[test] + fn test_no_dst() -> Result<(), Error> { + let tz_string = b"HST10"; + let transition_rule = TransitionRule::from_tz_string(tz_string, false)?; + assert_eq!(transition_rule, LocalTimeType::new(-36000, false, Some(b"HST"))?.into()); + Ok(()) + } + + #[test] + fn test_error() -> Result<(), Error> { + assert!(matches!( + TransitionRule::from_tz_string(b"IST-1GMT0", false), + Err(Error::UnsupportedTzString(_)) + )); + assert!(matches!( + TransitionRule::from_tz_string(b"EET-2EEST", false), + Err(Error::UnsupportedTzString(_)) + )); + + Ok(()) + } + + #[test] + fn test_v1_file_with_leap_seconds() -> Result<(), Error> { + let bytes = b"TZif\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x01\0\0\0\x01\0\0\0\x1b\0\0\0\0\0\0\0\x01\0\0\0\x04\0\0\0\0\0\0UTC\0\x04\xb2\x58\0\0\0\0\x01\x05\xa4\xec\x01\0\0\0\x02\x07\x86\x1f\x82\0\0\0\x03\x09\x67\x53\x03\0\0\0\x04\x0b\x48\x86\x84\0\0\0\x05\x0d\x2b\x0b\x85\0\0\0\x06\x0f\x0c\x3f\x06\0\0\0\x07\x10\xed\x72\x87\0\0\0\x08\x12\xce\xa6\x08\0\0\0\x09\x15\x9f\xca\x89\0\0\0\x0a\x17\x80\xfe\x0a\0\0\0\x0b\x19\x62\x31\x8b\0\0\0\x0c\x1d\x25\xea\x0c\0\0\0\x0d\x21\xda\xe5\x0d\0\0\0\x0e\x25\x9e\x9d\x8e\0\0\0\x0f\x27\x7f\xd1\x0f\0\0\0\x10\x2a\x50\xf5\x90\0\0\0\x11\x2c\x32\x29\x11\0\0\0\x12\x2e\x13\x5c\x92\0\0\0\x13\x30\xe7\x24\x13\0\0\0\x14\x33\xb8\x48\x94\0\0\0\x15\x36\x8c\x10\x15\0\0\0\x16\x43\xb7\x1b\x96\0\0\0\x17\x49\x5c\x07\x97\0\0\0\x18\x4f\xef\x93\x18\0\0\0\x19\x55\x93\x2d\x99\0\0\0\x1a\x58\x68\x46\x9a\0\0\0\x1b\0\0"; + + let time_zone = TimeZone::from_tz_data(bytes)?; + + let time_zone_result = TimeZone::new( + Vec::new(), + vec![LocalTimeType::new(0, false, Some(b"UTC"))?], + vec![ + LeapSecond::new(78796800, 1), + LeapSecond::new(94694401, 2), + LeapSecond::new(126230402, 3), + LeapSecond::new(157766403, 4), + LeapSecond::new(189302404, 5), + LeapSecond::new(220924805, 6), + LeapSecond::new(252460806, 7), + LeapSecond::new(283996807, 8), + LeapSecond::new(315532808, 9), + LeapSecond::new(362793609, 10), + LeapSecond::new(394329610, 11), + LeapSecond::new(425865611, 12), + LeapSecond::new(489024012, 13), + LeapSecond::new(567993613, 14), + LeapSecond::new(631152014, 15), + LeapSecond::new(662688015, 16), + LeapSecond::new(709948816, 17), + LeapSecond::new(741484817, 18), + LeapSecond::new(773020818, 19), + LeapSecond::new(820454419, 20), + LeapSecond::new(867715220, 21), + LeapSecond::new(915148821, 22), + LeapSecond::new(1136073622, 23), + LeapSecond::new(1230768023, 24), + LeapSecond::new(1341100824, 25), + LeapSecond::new(1435708825, 26), + LeapSecond::new(1483228826, 27), + ], + None, + )?; + + assert_eq!(time_zone, time_zone_result); + + Ok(()) + } + + #[test] + fn test_v2_file() -> Result<(), Error> { + let bytes = b"TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x06\0\0\0\x06\0\0\0\0\0\0\0\x07\0\0\0\x06\0\0\0\x14\x80\0\0\0\xbb\x05\x43\x48\xbb\x21\x71\x58\xcb\x89\x3d\xc8\xd2\x23\xf4\x70\xd2\x61\x49\x38\xd5\x8d\x73\x48\x01\x02\x01\x03\x04\x01\x05\xff\xff\x6c\x02\0\0\xff\xff\x6c\x58\0\x04\xff\xff\x7a\x68\x01\x08\xff\xff\x7a\x68\x01\x0c\xff\xff\x7a\x68\x01\x10\xff\xff\x73\x60\0\x04LMT\0HST\0HDT\0HWT\0HPT\0\0\0\0\0\x01\0\0\0\0\0\x01\0TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x06\0\0\0\x06\0\0\0\0\0\0\0\x07\0\0\0\x06\0\0\0\x14\xff\xff\xff\xff\x74\xe0\x70\xbe\xff\xff\xff\xff\xbb\x05\x43\x48\xff\xff\xff\xff\xbb\x21\x71\x58\xff\xff\xff\xff\xcb\x89\x3d\xc8\xff\xff\xff\xff\xd2\x23\xf4\x70\xff\xff\xff\xff\xd2\x61\x49\x38\xff\xff\xff\xff\xd5\x8d\x73\x48\x01\x02\x01\x03\x04\x01\x05\xff\xff\x6c\x02\0\0\xff\xff\x6c\x58\0\x04\xff\xff\x7a\x68\x01\x08\xff\xff\x7a\x68\x01\x0c\xff\xff\x7a\x68\x01\x10\xff\xff\x73\x60\0\x04LMT\0HST\0HDT\0HWT\0HPT\0\0\0\0\0\x01\0\0\0\0\0\x01\0\x0aHST10\x0a"; + + let time_zone = TimeZone::from_tz_data(bytes)?; + + let time_zone_result = TimeZone::new( + vec![ + Transition::new(-2334101314, 1), + Transition::new(-1157283000, 2), + Transition::new(-1155436200, 1), + Transition::new(-880198200, 3), + Transition::new(-769395600, 4), + Transition::new(-765376200, 1), + Transition::new(-712150200, 5), + ], + vec![ + LocalTimeType::new(-37886, false, Some(b"LMT"))?, + LocalTimeType::new(-37800, false, Some(b"HST"))?, + LocalTimeType::new(-34200, true, Some(b"HDT"))?, + LocalTimeType::new(-34200, true, Some(b"HWT"))?, + LocalTimeType::new(-34200, true, Some(b"HPT"))?, + LocalTimeType::new(-36000, false, Some(b"HST"))?, + ], + Vec::new(), + Some(TransitionRule::from(LocalTimeType::new(-36000, false, Some(b"HST"))?)), + )?; + + assert_eq!(time_zone, time_zone_result); + + assert_eq!( + *time_zone.find_local_time_type(-1156939200)?, + LocalTimeType::new(-34200, true, Some(b"HDT"))? + ); + assert_eq!( + *time_zone.find_local_time_type(1546300800)?, + LocalTimeType::new(-36000, false, Some(b"HST"))? + ); + + Ok(()) + } + + #[test] + fn test_tz_ascii_str() -> Result<(), Error> { + assert!(matches!(TimeZoneName::new(b""), Err(Error::LocalTimeType(_)))); + assert!(matches!(TimeZoneName::new(b"1"), Err(Error::LocalTimeType(_)))); + assert!(matches!(TimeZoneName::new(b"12"), Err(Error::LocalTimeType(_)))); + assert_eq!(TimeZoneName::new(b"123")?.as_bytes(), b"123"); + assert_eq!(TimeZoneName::new(b"1234")?.as_bytes(), b"1234"); + assert_eq!(TimeZoneName::new(b"12345")?.as_bytes(), b"12345"); + assert_eq!(TimeZoneName::new(b"123456")?.as_bytes(), b"123456"); + assert_eq!(TimeZoneName::new(b"1234567")?.as_bytes(), b"1234567"); + assert!(matches!(TimeZoneName::new(b"12345678"), Err(Error::LocalTimeType(_)))); + assert!(matches!(TimeZoneName::new(b"123456789"), Err(Error::LocalTimeType(_)))); + assert!(matches!(TimeZoneName::new(b"1234567890"), Err(Error::LocalTimeType(_)))); + + assert!(matches!(TimeZoneName::new(b"123\0\0\0"), Err(Error::LocalTimeType(_)))); + + Ok(()) + } + + #[test] + fn test_time_zone() -> Result<(), Error> { + let utc = LocalTimeType::UTC; + let cet = LocalTimeType::with_offset(3600)?; + + let utc_local_time_types = vec![utc]; + let fixed_extra_rule = TransitionRule::from(cet); + + let time_zone_1 = TimeZone::new(vec![], utc_local_time_types.clone(), vec![], None)?; + let time_zone_2 = + TimeZone::new(vec![], utc_local_time_types.clone(), vec![], Some(fixed_extra_rule))?; + let time_zone_3 = + TimeZone::new(vec![Transition::new(0, 0)], utc_local_time_types.clone(), vec![], None)?; + let time_zone_4 = TimeZone::new( + vec![Transition::new(i32::min_value().into(), 0), Transition::new(0, 1)], + vec![utc, cet], + Vec::new(), + Some(fixed_extra_rule), + )?; + + assert_eq!(*time_zone_1.find_local_time_type(0)?, utc); + assert_eq!(*time_zone_2.find_local_time_type(0)?, cet); + + assert_eq!(*time_zone_3.find_local_time_type(-1)?, utc); + assert!(matches!(time_zone_3.find_local_time_type(0), Err(Error::FindLocalTimeType(_)))); + + assert_eq!(*time_zone_4.find_local_time_type(-1)?, utc); + assert_eq!(*time_zone_4.find_local_time_type(0)?, cet); + + let time_zone_err = TimeZone::new( + vec![Transition::new(0, 0)], + utc_local_time_types, + vec![], + Some(fixed_extra_rule), + ); + assert!(time_zone_err.is_err()); + + Ok(()) + } + + #[test] + fn test_time_zone_from_posix_tz() -> Result<(), Error> { + #[cfg(unix)] + { + // if the TZ var is set, this essentially _overrides_ the + // time set by the localtime symlink + // so just ensure that ::local() acts as expected + // in this case + if let Ok(tz) = std::env::var("TZ") { + let time_zone_local = TimeZone::local(Some(tz.as_str()))?; + let time_zone_local_1 = TimeZone::from_posix_tz(&tz)?; + assert_eq!(time_zone_local, time_zone_local_1); + } + + let time_zone_utc = TimeZone::from_posix_tz("UTC")?; + assert_eq!(time_zone_utc.find_local_time_type(0)?.offset(), 0); + } + + assert!(TimeZone::from_posix_tz("EST5EDT,0/0,J365/25").is_err()); + assert!(TimeZone::from_posix_tz("").is_err()); + + Ok(()) + } + + #[test] + fn test_leap_seconds() -> Result<(), Error> { + let time_zone = TimeZone::new( + Vec::new(), + vec![LocalTimeType::new(0, false, Some(b"UTC"))?], + vec![ + LeapSecond::new(78796800, 1), + LeapSecond::new(94694401, 2), + LeapSecond::new(126230402, 3), + LeapSecond::new(157766403, 4), + LeapSecond::new(189302404, 5), + LeapSecond::new(220924805, 6), + LeapSecond::new(252460806, 7), + LeapSecond::new(283996807, 8), + LeapSecond::new(315532808, 9), + LeapSecond::new(362793609, 10), + LeapSecond::new(394329610, 11), + LeapSecond::new(425865611, 12), + LeapSecond::new(489024012, 13), + LeapSecond::new(567993613, 14), + LeapSecond::new(631152014, 15), + LeapSecond::new(662688015, 16), + LeapSecond::new(709948816, 17), + LeapSecond::new(741484817, 18), + LeapSecond::new(773020818, 19), + LeapSecond::new(820454419, 20), + LeapSecond::new(867715220, 21), + LeapSecond::new(915148821, 22), + LeapSecond::new(1136073622, 23), + LeapSecond::new(1230768023, 24), + LeapSecond::new(1341100824, 25), + LeapSecond::new(1435708825, 26), + LeapSecond::new(1483228826, 27), + ], + None, + )?; + + let time_zone_ref = time_zone.as_ref(); + + assert!(matches!(time_zone_ref.unix_leap_time_to_unix_time(1136073621), Ok(1136073599))); + assert!(matches!(time_zone_ref.unix_leap_time_to_unix_time(1136073622), Ok(1136073600))); + assert!(matches!(time_zone_ref.unix_leap_time_to_unix_time(1136073623), Ok(1136073600))); + assert!(matches!(time_zone_ref.unix_leap_time_to_unix_time(1136073624), Ok(1136073601))); + + assert!(matches!(time_zone_ref.unix_time_to_unix_leap_time(1136073599), Ok(1136073621))); + assert!(matches!(time_zone_ref.unix_time_to_unix_leap_time(1136073600), Ok(1136073623))); + assert!(matches!(time_zone_ref.unix_time_to_unix_leap_time(1136073601), Ok(1136073624))); + + Ok(()) + } + + #[test] + fn test_leap_seconds_overflow() -> Result<(), Error> { + let time_zone_err = TimeZone::new( + vec![Transition::new(i64::min_value(), 0)], + vec![LocalTimeType::UTC], + vec![LeapSecond::new(0, 1)], + Some(TransitionRule::from(LocalTimeType::UTC)), + ); + assert!(time_zone_err.is_err()); + + let time_zone = TimeZone::new( + vec![Transition::new(i64::max_value(), 0)], + vec![LocalTimeType::UTC], + vec![LeapSecond::new(0, 1)], + None, + )?; + assert!(matches!( + time_zone.find_local_time_type(i64::max_value()), + Err(Error::FindLocalTimeType(_)) + )); + + Ok(()) + } +} diff --git a/javascript-engine/external/chrono/src/offset/local/unix.rs b/javascript-engine/external/chrono/src/offset/local/unix.rs new file mode 100644 index 0000000..32aa316 --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/local/unix.rs @@ -0,0 +1,185 @@ +// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use std::{cell::RefCell, collections::hash_map, env, fs, hash::Hasher, time::SystemTime}; + +use super::tz_info::TimeZone; +use super::{DateTime, FixedOffset, Local, NaiveDateTime}; +use crate::{Datelike, LocalResult, Utc}; + +pub(super) fn now() -> DateTime { + let now = Utc::now().naive_utc(); + naive_to_local(&now, false).unwrap() +} + +pub(super) fn naive_to_local(d: &NaiveDateTime, local: bool) -> LocalResult> { + TZ_INFO.with(|maybe_cache| { + maybe_cache.borrow_mut().get_or_insert_with(Cache::default).offset(*d, local) + }) +} + +// we have to store the `Cache` in an option as it can't +// be initalized in a static context. +thread_local! { + static TZ_INFO: RefCell> = Default::default(); +} + +enum Source { + LocalTime { mtime: SystemTime }, + Environment { hash: u64 }, +} + +impl Source { + fn new(env_tz: Option<&str>) -> Source { + match env_tz { + Some(tz) => { + let mut hasher = hash_map::DefaultHasher::new(); + hasher.write(tz.as_bytes()); + let hash = hasher.finish(); + Source::Environment { hash } + } + None => match fs::symlink_metadata("/etc/localtime") { + Ok(data) => Source::LocalTime { + // we have to pick a sensible default when the mtime fails + // by picking SystemTime::now() we raise the probability of + // the cache being invalidated if/when the mtime starts working + mtime: data.modified().unwrap_or_else(|_| SystemTime::now()), + }, + Err(_) => { + // as above, now() should be a better default than some constant + // TODO: see if we can improve caching in the case where the fallback is a valid timezone + Source::LocalTime { mtime: SystemTime::now() } + } + }, + } + } +} + +struct Cache { + zone: TimeZone, + source: Source, + last_checked: SystemTime, +} + +#[cfg(target_os = "android")] +const TZDB_LOCATION: &str = " /system/usr/share/zoneinfo"; + +#[cfg(target_os = "aix")] +const TZDB_LOCATION: &str = "/usr/share/lib/zoneinfo"; + +#[allow(dead_code)] // keeps the cfg simpler +#[cfg(not(any(target_os = "android", target_os = "aix")))] +const TZDB_LOCATION: &str = "/usr/share/zoneinfo"; + +fn fallback_timezone() -> Option { + let tz_name = iana_time_zone::get_timezone().ok()?; + let bytes = fs::read(format!("{}/{}", TZDB_LOCATION, tz_name)).ok()?; + TimeZone::from_tz_data(&bytes).ok() +} + +impl Default for Cache { + fn default() -> Cache { + // default to UTC if no local timezone can be found + let env_tz = env::var("TZ").ok(); + let env_ref = env_tz.as_ref().map(|s| s.as_str()); + Cache { + last_checked: SystemTime::now(), + source: Source::new(env_ref), + zone: current_zone(env_ref), + } + } +} + +fn current_zone(var: Option<&str>) -> TimeZone { + TimeZone::local(var).ok().or_else(fallback_timezone).unwrap_or_else(TimeZone::utc) +} + +impl Cache { + fn offset(&mut self, d: NaiveDateTime, local: bool) -> LocalResult> { + let now = SystemTime::now(); + + match now.duration_since(self.last_checked) { + // If the cache has been around for less than a second then we reuse it + // unconditionally. This is a reasonable tradeoff because the timezone + // generally won't be changing _that_ often, but if the time zone does + // change, it will reflect sufficiently quickly from an application + // user's perspective. + Ok(d) if d.as_secs() < 1 => (), + Ok(_) | Err(_) => { + let env_tz = env::var("TZ").ok(); + let env_ref = env_tz.as_ref().map(|s| s.as_str()); + let new_source = Source::new(env_ref); + + let out_of_date = match (&self.source, &new_source) { + // change from env to file or file to env, must recreate the zone + (Source::Environment { .. }, Source::LocalTime { .. }) + | (Source::LocalTime { .. }, Source::Environment { .. }) => true, + // stay as file, but mtime has changed + (Source::LocalTime { mtime: old_mtime }, Source::LocalTime { mtime }) + if old_mtime != mtime => + { + true + } + // stay as env, but hash of variable has changed + (Source::Environment { hash: old_hash }, Source::Environment { hash }) + if old_hash != hash => + { + true + } + // cache can be reused + _ => false, + }; + + if out_of_date { + self.zone = current_zone(env_ref); + } + + self.last_checked = now; + self.source = new_source; + } + } + + if !local { + let offset = self + .zone + .find_local_time_type(d.timestamp()) + .expect("unable to select local time type") + .offset(); + + return match FixedOffset::east_opt(offset) { + Some(offset) => LocalResult::Single(DateTime::from_utc(d, offset)), + None => LocalResult::None, + }; + } + + // we pass through the year as the year of a local point in time must either be valid in that locale, or + // the entire time was skipped in which case we will return LocalResult::None anywa. + match self + .zone + .find_local_time_type_from_local(d.timestamp(), d.year()) + .expect("unable to select local time type") + { + LocalResult::None => LocalResult::None, + LocalResult::Ambiguous(early, late) => { + let early_offset = FixedOffset::east_opt(early.offset()).unwrap(); + let late_offset = FixedOffset::east_opt(late.offset()).unwrap(); + + LocalResult::Ambiguous( + DateTime::from_utc(d - early_offset, early_offset), + DateTime::from_utc(d - late_offset, late_offset), + ) + } + LocalResult::Single(tt) => { + let offset = FixedOffset::east_opt(tt.offset()).unwrap(); + LocalResult::Single(DateTime::from_utc(d - offset, offset)) + } + } + } +} diff --git a/javascript-engine/external/chrono/src/offset/local/windows.rs b/javascript-engine/external/chrono/src/offset/local/windows.rs new file mode 100644 index 0000000..e641501 --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/local/windows.rs @@ -0,0 +1,278 @@ +// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use std::io; +use std::mem; +use std::time::{SystemTime, UNIX_EPOCH}; + +use winapi::shared::minwindef::*; +use winapi::um::minwinbase::SYSTEMTIME; +use winapi::um::timezoneapi::*; + +use super::{FixedOffset, Local}; +use crate::{DateTime, Datelike, LocalResult, NaiveDate, NaiveDateTime, NaiveTime, Timelike}; + +pub(super) fn now() -> DateTime { + tm_to_datetime(Timespec::now().local()) +} + +/// Converts a local `NaiveDateTime` to the `time::Timespec`. +pub(super) fn naive_to_local(d: &NaiveDateTime, local: bool) -> LocalResult> { + let tm = Tm { + tm_sec: d.second() as i32, + tm_min: d.minute() as i32, + tm_hour: d.hour() as i32, + tm_mday: d.day() as i32, + tm_mon: d.month0() as i32, // yes, C is that strange... + tm_year: d.year() - 1900, // this doesn't underflow, we know that d is `NaiveDateTime`. + tm_wday: 0, // to_local ignores this + tm_yday: 0, // and this + tm_isdst: -1, + // This seems pretty fake? + tm_utcoff: if local { 1 } else { 0 }, + // do not set this, OS APIs are heavily inconsistent in terms of leap second handling + tm_nsec: 0, + }; + + let spec = Timespec { + sec: match local { + false => utc_tm_to_time(&tm), + true => local_tm_to_time(&tm), + }, + nsec: tm.tm_nsec, + }; + + // Adjust for leap seconds + let mut tm = spec.local(); + assert_eq!(tm.tm_nsec, 0); + tm.tm_nsec = d.nanosecond() as i32; + + // #TODO - there should be ambiguous cases, investigate? + LocalResult::Single(tm_to_datetime(tm)) +} + +/// Converts a `time::Tm` struct into the timezone-aware `DateTime`. +fn tm_to_datetime(mut tm: Tm) -> DateTime { + if tm.tm_sec >= 60 { + tm.tm_nsec += (tm.tm_sec - 59) * 1_000_000_000; + tm.tm_sec = 59; + } + + let date = NaiveDate::from_ymd_opt(tm.tm_year + 1900, tm.tm_mon as u32 + 1, tm.tm_mday as u32) + .unwrap(); + let time = NaiveTime::from_hms_nano( + tm.tm_hour as u32, + tm.tm_min as u32, + tm.tm_sec as u32, + tm.tm_nsec as u32, + ); + + let offset = FixedOffset::east_opt(tm.tm_utcoff).unwrap(); + DateTime::from_utc(date.and_time(time) - offset, offset) +} + +/// A record specifying a time value in seconds and nanoseconds, where +/// nanoseconds represent the offset from the given second. +/// +/// For example a timespec of 1.2 seconds after the beginning of the epoch would +/// be represented as {sec: 1, nsec: 200000000}. +struct Timespec { + sec: i64, + nsec: i32, +} + +impl Timespec { + /// Constructs a timespec representing the current time in UTC. + fn now() -> Timespec { + let st = + SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch"); + Timespec { sec: st.as_secs() as i64, nsec: st.subsec_nanos() as i32 } + } + + /// Converts this timespec into the system's local time. + fn local(self) -> Tm { + let mut tm = Tm { + tm_sec: 0, + tm_min: 0, + tm_hour: 0, + tm_mday: 0, + tm_mon: 0, + tm_year: 0, + tm_wday: 0, + tm_yday: 0, + tm_isdst: 0, + tm_utcoff: 0, + tm_nsec: 0, + }; + time_to_local_tm(self.sec, &mut tm); + tm.tm_nsec = self.nsec; + tm + } +} + +/// Holds a calendar date and time broken down into its components (year, month, +/// day, and so on), also called a broken-down time value. +// FIXME: use c_int instead of i32? +#[repr(C)] +struct Tm { + /// Seconds after the minute - [0, 60] + tm_sec: i32, + + /// Minutes after the hour - [0, 59] + tm_min: i32, + + /// Hours after midnight - [0, 23] + tm_hour: i32, + + /// Day of the month - [1, 31] + tm_mday: i32, + + /// Months since January - [0, 11] + tm_mon: i32, + + /// Years since 1900 + tm_year: i32, + + /// Days since Sunday - [0, 6]. 0 = Sunday, 1 = Monday, ..., 6 = Saturday. + tm_wday: i32, + + /// Days since January 1 - [0, 365] + tm_yday: i32, + + /// Daylight Saving Time flag. + /// + /// This value is positive if Daylight Saving Time is in effect, zero if + /// Daylight Saving Time is not in effect, and negative if this information + /// is not available. + tm_isdst: i32, + + /// Identifies the time zone that was used to compute this broken-down time + /// value, including any adjustment for Daylight Saving Time. This is the + /// number of seconds east of UTC. For example, for U.S. Pacific Daylight + /// Time, the value is `-7*60*60 = -25200`. + tm_utcoff: i32, + + /// Nanoseconds after the second - [0, 109 - 1] + tm_nsec: i32, +} + +const HECTONANOSECS_IN_SEC: i64 = 10_000_000; +const HECTONANOSEC_TO_UNIX_EPOCH: i64 = 11_644_473_600 * HECTONANOSECS_IN_SEC; + +fn time_to_file_time(sec: i64) -> FILETIME { + let t = ((sec * HECTONANOSECS_IN_SEC) + HECTONANOSEC_TO_UNIX_EPOCH) as u64; + FILETIME { dwLowDateTime: t as DWORD, dwHighDateTime: (t >> 32) as DWORD } +} + +fn file_time_as_u64(ft: &FILETIME) -> u64 { + ((ft.dwHighDateTime as u64) << 32) | (ft.dwLowDateTime as u64) +} + +fn file_time_to_unix_seconds(ft: &FILETIME) -> i64 { + let t = file_time_as_u64(ft) as i64; + ((t - HECTONANOSEC_TO_UNIX_EPOCH) / HECTONANOSECS_IN_SEC) as i64 +} + +fn system_time_to_file_time(sys: &SYSTEMTIME) -> FILETIME { + unsafe { + let mut ft = mem::zeroed(); + SystemTimeToFileTime(sys, &mut ft); + ft + } +} + +fn tm_to_system_time(tm: &Tm) -> SYSTEMTIME { + let mut sys: SYSTEMTIME = unsafe { mem::zeroed() }; + sys.wSecond = tm.tm_sec as WORD; + sys.wMinute = tm.tm_min as WORD; + sys.wHour = tm.tm_hour as WORD; + sys.wDay = tm.tm_mday as WORD; + sys.wDayOfWeek = tm.tm_wday as WORD; + sys.wMonth = (tm.tm_mon + 1) as WORD; + sys.wYear = (tm.tm_year + 1900) as WORD; + sys +} + +fn system_time_to_tm(sys: &SYSTEMTIME, tm: &mut Tm) { + tm.tm_sec = sys.wSecond as i32; + tm.tm_min = sys.wMinute as i32; + tm.tm_hour = sys.wHour as i32; + tm.tm_mday = sys.wDay as i32; + tm.tm_wday = sys.wDayOfWeek as i32; + tm.tm_mon = (sys.wMonth - 1) as i32; + tm.tm_year = (sys.wYear - 1900) as i32; + tm.tm_yday = yday(tm.tm_year, tm.tm_mon + 1, tm.tm_mday); + + fn yday(year: i32, month: i32, day: i32) -> i32 { + let leap = if month > 2 { + if year % 4 == 0 { + 1 + } else { + 2 + } + } else { + 0 + }; + let july = if month > 7 { 1 } else { 0 }; + + (month - 1) * 30 + month / 2 + (day - 1) - leap + july + } +} + +macro_rules! call { + ($name:ident($($arg:expr),*)) => { + if $name($($arg),*) == 0 { + panic!(concat!(stringify!($name), " failed with: {}"), + io::Error::last_os_error()); + } + } +} + +fn time_to_local_tm(sec: i64, tm: &mut Tm) { + let ft = time_to_file_time(sec); + unsafe { + let mut utc = mem::zeroed(); + let mut local = mem::zeroed(); + call!(FileTimeToSystemTime(&ft, &mut utc)); + call!(SystemTimeToTzSpecificLocalTime(0 as *const _, &mut utc, &mut local)); + system_time_to_tm(&local, tm); + + let local = system_time_to_file_time(&local); + let local_sec = file_time_to_unix_seconds(&local); + + let mut tz = mem::zeroed(); + GetTimeZoneInformation(&mut tz); + + // SystemTimeToTzSpecificLocalTime already applied the biases so + // check if it non standard + tm.tm_utcoff = (local_sec - sec) as i32; + tm.tm_isdst = if tm.tm_utcoff == -60 * (tz.Bias + tz.StandardBias) { 0 } else { 1 }; + } +} + +fn utc_tm_to_time(tm: &Tm) -> i64 { + unsafe { + let mut ft = mem::zeroed(); + let sys_time = tm_to_system_time(tm); + call!(SystemTimeToFileTime(&sys_time, &mut ft)); + file_time_to_unix_seconds(&ft) + } +} + +fn local_tm_to_time(tm: &Tm) -> i64 { + unsafe { + let mut ft = mem::zeroed(); + let mut utc = mem::zeroed(); + let mut sys_time = tm_to_system_time(tm); + call!(TzSpecificLocalTimeToSystemTime(0 as *mut _, &mut sys_time, &mut utc)); + call!(SystemTimeToFileTime(&utc, &mut ft)); + file_time_to_unix_seconds(&ft) + } +} diff --git a/javascript-engine/external/chrono/src/offset/mod.rs b/javascript-engine/external/chrono/src/offset/mod.rs new file mode 100644 index 0000000..09d0714 --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/mod.rs @@ -0,0 +1,549 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! The time zone, which calculates offsets from the local time to UTC. +//! +//! There are four operations provided by the `TimeZone` trait: +//! +//! 1. Converting the local `NaiveDateTime` to `DateTime` +//! 2. Converting the UTC `NaiveDateTime` to `DateTime` +//! 3. Converting `DateTime` to the local `NaiveDateTime` +//! 4. Constructing `DateTime` objects from various offsets +//! +//! 1 is used for constructors. 2 is used for the `with_timezone` method of date and time types. +//! 3 is used for other methods, e.g. `year()` or `format()`, and provided by an associated type +//! which implements `Offset` (which then passed to `TimeZone` for actual implementations). +//! Technically speaking `TimeZone` has a total knowledge about given timescale, +//! but `Offset` is used as a cache to avoid the repeated conversion +//! and provides implementations for 1 and 3. +//! An `TimeZone` instance can be reconstructed from the corresponding `Offset` instance. + +use core::fmt; + +use crate::format::{parse, ParseResult, Parsed, StrftimeItems}; +use crate::naive::{NaiveDate, NaiveDateTime, NaiveTime}; +use crate::Weekday; +#[allow(deprecated)] +use crate::{Date, DateTime}; + +mod fixed; +pub use self::fixed::FixedOffset; + +#[cfg(feature = "clock")] +mod local; +#[cfg(feature = "clock")] +pub use self::local::Local; + +mod utc; +pub use self::utc::Utc; + +/// The conversion result from the local time to the timezone-aware datetime types. +#[derive(Clone, PartialEq, Debug, Copy, Eq, Hash)] +pub enum LocalResult { + /// Given local time representation is invalid. + /// This can occur when, for example, the positive timezone transition. + None, + /// Given local time representation has a single unique result. + Single(T), + /// Given local time representation has multiple results and thus ambiguous. + /// This can occur when, for example, the negative timezone transition. + Ambiguous(T /*min*/, T /*max*/), +} + +impl LocalResult { + /// Returns `Some` only when the conversion result is unique, or `None` otherwise. + pub fn single(self) -> Option { + match self { + LocalResult::Single(t) => Some(t), + _ => None, + } + } + + /// Returns `Some` for the earliest possible conversion result, or `None` if none. + pub fn earliest(self) -> Option { + match self { + LocalResult::Single(t) | LocalResult::Ambiguous(t, _) => Some(t), + _ => None, + } + } + + /// Returns `Some` for the latest possible conversion result, or `None` if none. + pub fn latest(self) -> Option { + match self { + LocalResult::Single(t) | LocalResult::Ambiguous(_, t) => Some(t), + _ => None, + } + } + + /// Maps a `LocalResult` into `LocalResult` with given function. + pub fn map U>(self, mut f: F) -> LocalResult { + match self { + LocalResult::None => LocalResult::None, + LocalResult::Single(v) => LocalResult::Single(f(v)), + LocalResult::Ambiguous(min, max) => LocalResult::Ambiguous(f(min), f(max)), + } + } +} + +#[allow(deprecated)] +impl LocalResult> { + /// Makes a new `DateTime` from the current date and given `NaiveTime`. + /// The offset in the current date is preserved. + /// + /// Propagates any error. Ambiguous result would be discarded. + #[inline] + pub fn and_time(self, time: NaiveTime) -> LocalResult> { + match self { + LocalResult::Single(d) => { + d.and_time(time).map_or(LocalResult::None, LocalResult::Single) + } + _ => LocalResult::None, + } + } + + /// Makes a new `DateTime` from the current date, hour, minute and second. + /// The offset in the current date is preserved. + /// + /// Propagates any error. Ambiguous result would be discarded. + #[inline] + pub fn and_hms_opt(self, hour: u32, min: u32, sec: u32) -> LocalResult> { + match self { + LocalResult::Single(d) => { + d.and_hms_opt(hour, min, sec).map_or(LocalResult::None, LocalResult::Single) + } + _ => LocalResult::None, + } + } + + /// Makes a new `DateTime` from the current date, hour, minute, second and millisecond. + /// The millisecond part can exceed 1,000 in order to represent the leap second. + /// The offset in the current date is preserved. + /// + /// Propagates any error. Ambiguous result would be discarded. + #[inline] + pub fn and_hms_milli_opt( + self, + hour: u32, + min: u32, + sec: u32, + milli: u32, + ) -> LocalResult> { + match self { + LocalResult::Single(d) => d + .and_hms_milli_opt(hour, min, sec, milli) + .map_or(LocalResult::None, LocalResult::Single), + _ => LocalResult::None, + } + } + + /// Makes a new `DateTime` from the current date, hour, minute, second and microsecond. + /// The microsecond part can exceed 1,000,000 in order to represent the leap second. + /// The offset in the current date is preserved. + /// + /// Propagates any error. Ambiguous result would be discarded. + #[inline] + pub fn and_hms_micro_opt( + self, + hour: u32, + min: u32, + sec: u32, + micro: u32, + ) -> LocalResult> { + match self { + LocalResult::Single(d) => d + .and_hms_micro_opt(hour, min, sec, micro) + .map_or(LocalResult::None, LocalResult::Single), + _ => LocalResult::None, + } + } + + /// Makes a new `DateTime` from the current date, hour, minute, second and nanosecond. + /// The nanosecond part can exceed 1,000,000,000 in order to represent the leap second. + /// The offset in the current date is preserved. + /// + /// Propagates any error. Ambiguous result would be discarded. + #[inline] + pub fn and_hms_nano_opt( + self, + hour: u32, + min: u32, + sec: u32, + nano: u32, + ) -> LocalResult> { + match self { + LocalResult::Single(d) => d + .and_hms_nano_opt(hour, min, sec, nano) + .map_or(LocalResult::None, LocalResult::Single), + _ => LocalResult::None, + } + } +} + +impl LocalResult { + /// Returns the single unique conversion result, or panics accordingly. + pub fn unwrap(self) -> T { + match self { + LocalResult::None => panic!("No such local time"), + LocalResult::Single(t) => t, + LocalResult::Ambiguous(t1, t2) => { + panic!("Ambiguous local time, ranging from {:?} to {:?}", t1, t2) + } + } + } +} + +/// The offset from the local time to UTC. +pub trait Offset: Sized + Clone + fmt::Debug { + /// Returns the fixed offset from UTC to the local time stored. + fn fix(&self) -> FixedOffset; +} + +/// The time zone. +/// +/// The methods here are the primarily constructors for [`Date`](../struct.Date.html) and +/// [`DateTime`](../struct.DateTime.html) types. +pub trait TimeZone: Sized + Clone { + /// An associated offset type. + /// This type is used to store the actual offset in date and time types. + /// The original `TimeZone` value can be recovered via `TimeZone::from_offset`. + type Offset: Offset; + + /// Make a new `DateTime` from year, month, day, time components and current time zone. + /// + /// This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE. + /// + /// Returns `LocalResult::None` on invalid input data. + fn with_ymd_and_hms( + &self, + year: i32, + month: u32, + day: u32, + hour: u32, + min: u32, + sec: u32, + ) -> LocalResult> { + match NaiveDate::from_ymd_opt(year, month, day).and_then(|d| d.and_hms_opt(hour, min, sec)) + { + Some(dt) => self.from_local_datetime(&dt), + None => LocalResult::None, + } + } + + /// Makes a new `Date` from year, month, day and the current time zone. + /// This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE. + /// + /// The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24), + /// but it will propagate to the `DateTime` values constructed via this date. + /// + /// Panics on the out-of-range date, invalid month and/or day. + #[deprecated(since = "0.4.23", note = "use `with_ymd_and_hms()` instead")] + #[allow(deprecated)] + fn ymd(&self, year: i32, month: u32, day: u32) -> Date { + self.ymd_opt(year, month, day).unwrap() + } + + /// Makes a new `Date` from year, month, day and the current time zone. + /// This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE. + /// + /// The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24), + /// but it will propagate to the `DateTime` values constructed via this date. + /// + /// Returns `None` on the out-of-range date, invalid month and/or day. + #[deprecated(since = "0.4.23", note = "use `with_ymd_and_hms()` instead")] + #[allow(deprecated)] + fn ymd_opt(&self, year: i32, month: u32, day: u32) -> LocalResult> { + match NaiveDate::from_ymd_opt(year, month, day) { + Some(d) => self.from_local_date(&d), + None => LocalResult::None, + } + } + + /// Makes a new `Date` from year, day of year (DOY or "ordinal") and the current time zone. + /// This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE. + /// + /// The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24), + /// but it will propagate to the `DateTime` values constructed via this date. + /// + /// Panics on the out-of-range date and/or invalid DOY. + #[deprecated( + since = "0.4.23", + note = "use `from_local_datetime()` with a `NaiveDateTime` instead" + )] + #[allow(deprecated)] + fn yo(&self, year: i32, ordinal: u32) -> Date { + self.yo_opt(year, ordinal).unwrap() + } + + /// Makes a new `Date` from year, day of year (DOY or "ordinal") and the current time zone. + /// This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE. + /// + /// The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24), + /// but it will propagate to the `DateTime` values constructed via this date. + /// + /// Returns `None` on the out-of-range date and/or invalid DOY. + #[deprecated( + since = "0.4.23", + note = "use `from_local_datetime()` with a `NaiveDateTime` instead" + )] + #[allow(deprecated)] + fn yo_opt(&self, year: i32, ordinal: u32) -> LocalResult> { + match NaiveDate::from_yo_opt(year, ordinal) { + Some(d) => self.from_local_date(&d), + None => LocalResult::None, + } + } + + /// Makes a new `Date` from ISO week date (year and week number), day of the week (DOW) and + /// the current time zone. + /// This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE. + /// The resulting `Date` may have a different year from the input year. + /// + /// The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24), + /// but it will propagate to the `DateTime` values constructed via this date. + /// + /// Panics on the out-of-range date and/or invalid week number. + #[deprecated( + since = "0.4.23", + note = "use `from_local_datetime()` with a `NaiveDateTime` instead" + )] + #[allow(deprecated)] + fn isoywd(&self, year: i32, week: u32, weekday: Weekday) -> Date { + self.isoywd_opt(year, week, weekday).unwrap() + } + + /// Makes a new `Date` from ISO week date (year and week number), day of the week (DOW) and + /// the current time zone. + /// This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE. + /// The resulting `Date` may have a different year from the input year. + /// + /// The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24), + /// but it will propagate to the `DateTime` values constructed via this date. + /// + /// Returns `None` on the out-of-range date and/or invalid week number. + #[deprecated( + since = "0.4.23", + note = "use `from_local_datetime()` with a `NaiveDateTime` instead" + )] + #[allow(deprecated)] + fn isoywd_opt(&self, year: i32, week: u32, weekday: Weekday) -> LocalResult> { + match NaiveDate::from_isoywd_opt(year, week, weekday) { + Some(d) => self.from_local_date(&d), + None => LocalResult::None, + } + } + + /// Makes a new `DateTime` from the number of non-leap seconds + /// since January 1, 1970 0:00:00 UTC (aka "UNIX timestamp") + /// and the number of nanoseconds since the last whole non-leap second. + /// + /// Panics on the out-of-range number of seconds and/or invalid nanosecond, + /// for a non-panicking version see [`timestamp_opt`](#method.timestamp_opt). + #[deprecated(since = "0.4.23", note = "use `timestamp_opt()` instead")] + fn timestamp(&self, secs: i64, nsecs: u32) -> DateTime { + self.timestamp_opt(secs, nsecs).unwrap() + } + + /// Makes a new `DateTime` from the number of non-leap seconds + /// since January 1, 1970 0:00:00 UTC (aka "UNIX timestamp") + /// and the number of nanoseconds since the last whole non-leap second. + /// + /// Returns `LocalResult::None` on out-of-range number of seconds and/or + /// invalid nanosecond, otherwise always returns `LocalResult::Single`. + /// + /// # Example + /// + /// ``` + /// use chrono::{Utc, TimeZone}; + /// + /// assert_eq!(Utc.timestamp_opt(1431648000, 0).unwrap().to_string(), "2015-05-15 00:00:00 UTC"); + /// ``` + fn timestamp_opt(&self, secs: i64, nsecs: u32) -> LocalResult> { + match NaiveDateTime::from_timestamp_opt(secs, nsecs) { + Some(dt) => LocalResult::Single(self.from_utc_datetime(&dt)), + None => LocalResult::None, + } + } + + /// Makes a new `DateTime` from the number of non-leap milliseconds + /// since January 1, 1970 0:00:00 UTC (aka "UNIX timestamp"). + /// + /// Panics on out-of-range number of milliseconds for a non-panicking + /// version see [`timestamp_millis_opt`](#method.timestamp_millis_opt). + #[deprecated(since = "0.4.23", note = "use `timestamp_millis_opt()` instead")] + fn timestamp_millis(&self, millis: i64) -> DateTime { + self.timestamp_millis_opt(millis).unwrap() + } + + /// Makes a new `DateTime` from the number of non-leap milliseconds + /// since January 1, 1970 0:00:00 UTC (aka "UNIX timestamp"). + /// + /// + /// Returns `LocalResult::None` on out-of-range number of milliseconds + /// and/or invalid nanosecond, otherwise always returns + /// `LocalResult::Single`. + /// + /// # Example + /// + /// ``` + /// use chrono::{Utc, TimeZone, LocalResult}; + /// match Utc.timestamp_millis_opt(1431648000) { + /// LocalResult::Single(dt) => assert_eq!(dt.timestamp(), 1431648), + /// _ => panic!("Incorrect timestamp_millis"), + /// }; + /// ``` + fn timestamp_millis_opt(&self, millis: i64) -> LocalResult> { + let (mut secs, mut millis) = (millis / 1000, millis % 1000); + if millis < 0 { + secs -= 1; + millis += 1000; + } + self.timestamp_opt(secs, millis as u32 * 1_000_000) + } + + /// Makes a new `DateTime` from the number of non-leap nanoseconds + /// since January 1, 1970 0:00:00 UTC (aka "UNIX timestamp"). + /// + /// Unlike [`timestamp_millis`](#method.timestamp_millis), this never + /// panics. + /// + /// # Example + /// + /// ``` + /// use chrono::{Utc, TimeZone}; + /// + /// assert_eq!(Utc.timestamp_nanos(1431648000000000).timestamp(), 1431648); + /// ``` + fn timestamp_nanos(&self, nanos: i64) -> DateTime { + let (mut secs, mut nanos) = (nanos / 1_000_000_000, nanos % 1_000_000_000); + if nanos < 0 { + secs -= 1; + nanos += 1_000_000_000; + } + self.timestamp_opt(secs, nanos as u32).unwrap() + } + + /// Parses a string with the specified format string and returns a + /// `DateTime` with the current offset. + /// + /// See the [`crate::format::strftime`] module on the + /// supported escape sequences. + /// + /// If the to-be-parsed string includes an offset, it *must* match the + /// offset of the TimeZone, otherwise an error will be returned. + /// + /// See also [`DateTime::parse_from_str`] which gives a [`DateTime`] with + /// parsed [`FixedOffset`]. + fn datetime_from_str(&self, s: &str, fmt: &str) -> ParseResult> { + let mut parsed = Parsed::new(); + parse(&mut parsed, s, StrftimeItems::new(fmt))?; + parsed.to_datetime_with_timezone(self) + } + + /// Reconstructs the time zone from the offset. + fn from_offset(offset: &Self::Offset) -> Self; + + /// Creates the offset(s) for given local `NaiveDate` if possible. + fn offset_from_local_date(&self, local: &NaiveDate) -> LocalResult; + + /// Creates the offset(s) for given local `NaiveDateTime` if possible. + fn offset_from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult; + + /// Converts the local `NaiveDate` to the timezone-aware `Date` if possible. + #[allow(clippy::wrong_self_convention)] + #[deprecated(since = "0.4.23", note = "use `from_local_datetime()` instead")] + #[allow(deprecated)] + fn from_local_date(&self, local: &NaiveDate) -> LocalResult> { + self.offset_from_local_date(local).map(|offset| { + // since FixedOffset is within +/- 1 day, the date is never affected + Date::from_utc(*local, offset) + }) + } + + /// Converts the local `NaiveDateTime` to the timezone-aware `DateTime` if possible. + #[allow(clippy::wrong_self_convention)] + fn from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult> { + self.offset_from_local_datetime(local) + .map(|offset| DateTime::from_utc(*local - offset.fix(), offset)) + } + + /// Creates the offset for given UTC `NaiveDate`. This cannot fail. + fn offset_from_utc_date(&self, utc: &NaiveDate) -> Self::Offset; + + /// Creates the offset for given UTC `NaiveDateTime`. This cannot fail. + fn offset_from_utc_datetime(&self, utc: &NaiveDateTime) -> Self::Offset; + + /// Converts the UTC `NaiveDate` to the local time. + /// The UTC is continuous and thus this cannot fail (but can give the duplicate local time). + #[allow(clippy::wrong_self_convention)] + #[deprecated(since = "0.4.23", note = "use `from_utc_datetime()` instead")] + #[allow(deprecated)] + fn from_utc_date(&self, utc: &NaiveDate) -> Date { + Date::from_utc(*utc, self.offset_from_utc_date(utc)) + } + + /// Converts the UTC `NaiveDateTime` to the local time. + /// The UTC is continuous and thus this cannot fail (but can give the duplicate local time). + #[allow(clippy::wrong_self_convention)] + fn from_utc_datetime(&self, utc: &NaiveDateTime) -> DateTime { + DateTime::from_utc(*utc, self.offset_from_utc_datetime(utc)) + } +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn test_negative_millis() { + let dt = Utc.timestamp_millis_opt(-1000).unwrap(); + assert_eq!(dt.to_string(), "1969-12-31 23:59:59 UTC"); + let dt = Utc.timestamp_millis_opt(-7000).unwrap(); + assert_eq!(dt.to_string(), "1969-12-31 23:59:53 UTC"); + let dt = Utc.timestamp_millis_opt(-7001).unwrap(); + assert_eq!(dt.to_string(), "1969-12-31 23:59:52.999 UTC"); + let dt = Utc.timestamp_millis_opt(-7003).unwrap(); + assert_eq!(dt.to_string(), "1969-12-31 23:59:52.997 UTC"); + let dt = Utc.timestamp_millis_opt(-999).unwrap(); + assert_eq!(dt.to_string(), "1969-12-31 23:59:59.001 UTC"); + let dt = Utc.timestamp_millis_opt(-1).unwrap(); + assert_eq!(dt.to_string(), "1969-12-31 23:59:59.999 UTC"); + let dt = Utc.timestamp_millis_opt(-60000).unwrap(); + assert_eq!(dt.to_string(), "1969-12-31 23:59:00 UTC"); + let dt = Utc.timestamp_millis_opt(-3600000).unwrap(); + assert_eq!(dt.to_string(), "1969-12-31 23:00:00 UTC"); + + for (millis, expected) in &[ + (-7000, "1969-12-31 23:59:53 UTC"), + (-7001, "1969-12-31 23:59:52.999 UTC"), + (-7003, "1969-12-31 23:59:52.997 UTC"), + ] { + match Utc.timestamp_millis_opt(*millis) { + LocalResult::Single(dt) => { + assert_eq!(dt.to_string(), *expected); + } + e => panic!("Got {:?} instead of an okay answer", e), + } + } + } + + #[test] + fn test_negative_nanos() { + let dt = Utc.timestamp_nanos(-1_000_000_000); + assert_eq!(dt.to_string(), "1969-12-31 23:59:59 UTC"); + let dt = Utc.timestamp_nanos(-999_999_999); + assert_eq!(dt.to_string(), "1969-12-31 23:59:59.000000001 UTC"); + let dt = Utc.timestamp_nanos(-1); + assert_eq!(dt.to_string(), "1969-12-31 23:59:59.999999999 UTC"); + let dt = Utc.timestamp_nanos(-60_000_000_000); + assert_eq!(dt.to_string(), "1969-12-31 23:59:00 UTC"); + let dt = Utc.timestamp_nanos(-3_600_000_000_000); + assert_eq!(dt.to_string(), "1969-12-31 23:00:00 UTC"); + } + + #[test] + fn test_nanos_never_panics() { + Utc.timestamp_nanos(i64::max_value()); + Utc.timestamp_nanos(i64::default()); + Utc.timestamp_nanos(i64::min_value()); + } +} diff --git a/javascript-engine/external/chrono/src/offset/utc.rs b/javascript-engine/external/chrono/src/offset/utc.rs new file mode 100644 index 0000000..ee3e70a --- /dev/null +++ b/javascript-engine/external/chrono/src/offset/utc.rs @@ -0,0 +1,125 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +//! The UTC (Coordinated Universal Time) time zone. + +use core::fmt; +#[cfg(all( + feature = "clock", + not(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + )) +))] +use std::time::{SystemTime, UNIX_EPOCH}; + +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +use super::{FixedOffset, LocalResult, Offset, TimeZone}; +use crate::naive::{NaiveDate, NaiveDateTime}; +#[cfg(feature = "clock")] +#[allow(deprecated)] +use crate::{Date, DateTime}; + +/// The UTC time zone. This is the most efficient time zone when you don't need the local time. +/// It is also used as an offset (which is also a dummy type). +/// +/// Using the [`TimeZone`](./trait.TimeZone.html) methods +/// on the UTC struct is the preferred way to construct `DateTime` +/// instances. +/// +/// # Example +/// +/// ``` +/// use chrono::{DateTime, TimeZone, NaiveDateTime, Utc}; +/// +/// let dt = DateTime::::from_utc(NaiveDateTime::from_timestamp(61, 0), Utc); +/// +/// assert_eq!(Utc.timestamp(61, 0), dt); +/// assert_eq!(Utc.with_ymd_and_hms(1970, 1, 1, 0, 1, 1).unwrap(), dt); +/// ``` +#[derive(Copy, Clone, PartialEq, Eq)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))] +pub struct Utc; + +#[cfg(feature = "clock")] +#[cfg_attr(docsrs, doc(cfg(feature = "clock")))] +impl Utc { + /// Returns a `Date` which corresponds to the current date. + #[deprecated( + since = "0.4.23", + note = "use `Utc::now()` instead, potentially with `.date_naive()`" + )] + #[allow(deprecated)] + pub fn today() -> Date { + Utc::now().date() + } + + /// Returns a `DateTime` which corresponds to the current date and time. + #[cfg(not(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + )))] + pub fn now() -> DateTime { + let now = + SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch"); + let naive = + NaiveDateTime::from_timestamp_opt(now.as_secs() as i64, now.subsec_nanos()).unwrap(); + DateTime::from_utc(naive, Utc) + } + + /// Returns a `DateTime` which corresponds to the current date and time. + #[cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) + ))] + pub fn now() -> DateTime { + let now = js_sys::Date::new_0(); + DateTime::::from(now) + } +} + +impl TimeZone for Utc { + type Offset = Utc; + + fn from_offset(_state: &Utc) -> Utc { + Utc + } + + fn offset_from_local_date(&self, _local: &NaiveDate) -> LocalResult { + LocalResult::Single(Utc) + } + fn offset_from_local_datetime(&self, _local: &NaiveDateTime) -> LocalResult { + LocalResult::Single(Utc) + } + + fn offset_from_utc_date(&self, _utc: &NaiveDate) -> Utc { + Utc + } + fn offset_from_utc_datetime(&self, _utc: &NaiveDateTime) -> Utc { + Utc + } +} + +impl Offset for Utc { + fn fix(&self) -> FixedOffset { + FixedOffset::east_opt(0).unwrap() + } +} + +impl fmt::Debug for Utc { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "Z") + } +} + +impl fmt::Display for Utc { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "UTC") + } +} diff --git a/javascript-engine/external/chrono/src/oldtime.rs b/javascript-engine/external/chrono/src/oldtime.rs new file mode 100644 index 0000000..f935e9a --- /dev/null +++ b/javascript-engine/external/chrono/src/oldtime.rs @@ -0,0 +1,765 @@ +// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +//! Temporal quantification + +use core::ops::{Add, Div, Mul, Neg, Sub}; +use core::time::Duration as StdDuration; +use core::{fmt, i64}; +#[cfg(any(feature = "std", test))] +use std::error::Error; + +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +/// The number of nanoseconds in a microsecond. +const NANOS_PER_MICRO: i32 = 1000; +/// The number of nanoseconds in a millisecond. +const NANOS_PER_MILLI: i32 = 1000_000; +/// The number of nanoseconds in seconds. +const NANOS_PER_SEC: i32 = 1_000_000_000; +/// The number of microseconds per second. +const MICROS_PER_SEC: i64 = 1000_000; +/// The number of milliseconds per second. +const MILLIS_PER_SEC: i64 = 1000; +/// The number of seconds in a minute. +const SECS_PER_MINUTE: i64 = 60; +/// The number of seconds in an hour. +const SECS_PER_HOUR: i64 = 3600; +/// The number of (non-leap) seconds in days. +const SECS_PER_DAY: i64 = 86400; +/// The number of (non-leap) seconds in a week. +const SECS_PER_WEEK: i64 = 604800; + +macro_rules! try_opt { + ($e:expr) => { + match $e { + Some(v) => v, + None => return None, + } + }; +} + +/// ISO 8601 time duration with nanosecond precision. +/// +/// This also allows for the negative duration; see individual methods for details. +#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +pub struct Duration { + secs: i64, + nanos: i32, // Always 0 <= nanos < NANOS_PER_SEC +} + +/// The minimum possible `Duration`: `i64::MIN` milliseconds. +pub(crate) const MIN: Duration = Duration { + secs: i64::MIN / MILLIS_PER_SEC - 1, + nanos: NANOS_PER_SEC + (i64::MIN % MILLIS_PER_SEC) as i32 * NANOS_PER_MILLI, +}; + +/// The maximum possible `Duration`: `i64::MAX` milliseconds. +pub(crate) const MAX: Duration = Duration { + secs: i64::MAX / MILLIS_PER_SEC, + nanos: (i64::MAX % MILLIS_PER_SEC) as i32 * NANOS_PER_MILLI, +}; + +impl Duration { + /// Makes a new `Duration` with given number of weeks. + /// Equivalent to `Duration::seconds(weeks * 7 * 24 * 60 * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn weeks(weeks: i64) -> Duration { + let secs = weeks.checked_mul(SECS_PER_WEEK).expect("Duration::weeks out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of days. + /// Equivalent to `Duration::seconds(days * 24 * 60 * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn days(days: i64) -> Duration { + let secs = days.checked_mul(SECS_PER_DAY).expect("Duration::days out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of hours. + /// Equivalent to `Duration::seconds(hours * 60 * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn hours(hours: i64) -> Duration { + let secs = hours.checked_mul(SECS_PER_HOUR).expect("Duration::hours ouf of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of minutes. + /// Equivalent to `Duration::seconds(minutes * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn minutes(minutes: i64) -> Duration { + let secs = minutes.checked_mul(SECS_PER_MINUTE).expect("Duration::minutes out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of seconds. + /// Panics when the duration is more than `i64::MAX` seconds + /// or less than `i64::MIN` seconds. + #[inline] + pub fn seconds(seconds: i64) -> Duration { + let d = Duration { secs: seconds, nanos: 0 }; + if d < MIN || d > MAX { + panic!("Duration::seconds out of bounds"); + } + d + } + + /// Makes a new `Duration` with given number of milliseconds. + #[inline] + pub fn milliseconds(milliseconds: i64) -> Duration { + let (secs, millis) = div_mod_floor_64(milliseconds, MILLIS_PER_SEC); + let nanos = millis as i32 * NANOS_PER_MILLI; + Duration { secs: secs, nanos: nanos } + } + + /// Makes a new `Duration` with given number of microseconds. + #[inline] + pub fn microseconds(microseconds: i64) -> Duration { + let (secs, micros) = div_mod_floor_64(microseconds, MICROS_PER_SEC); + let nanos = micros as i32 * NANOS_PER_MICRO; + Duration { secs: secs, nanos: nanos } + } + + /// Makes a new `Duration` with given number of nanoseconds. + #[inline] + pub fn nanoseconds(nanos: i64) -> Duration { + let (secs, nanos) = div_mod_floor_64(nanos, NANOS_PER_SEC as i64); + Duration { secs: secs, nanos: nanos as i32 } + } + + /// Returns the total number of whole weeks in the duration. + #[inline] + pub fn num_weeks(&self) -> i64 { + self.num_days() / 7 + } + + /// Returns the total number of whole days in the duration. + pub fn num_days(&self) -> i64 { + self.num_seconds() / SECS_PER_DAY + } + + /// Returns the total number of whole hours in the duration. + #[inline] + pub fn num_hours(&self) -> i64 { + self.num_seconds() / SECS_PER_HOUR + } + + /// Returns the total number of whole minutes in the duration. + #[inline] + pub fn num_minutes(&self) -> i64 { + self.num_seconds() / SECS_PER_MINUTE + } + + /// Returns the total number of whole seconds in the duration. + pub fn num_seconds(&self) -> i64 { + // If secs is negative, nanos should be subtracted from the duration. + if self.secs < 0 && self.nanos > 0 { + self.secs + 1 + } else { + self.secs + } + } + + /// Returns the number of nanoseconds such that + /// `nanos_mod_sec() + num_seconds() * NANOS_PER_SEC` is the total number of + /// nanoseconds in the duration. + fn nanos_mod_sec(&self) -> i32 { + if self.secs < 0 && self.nanos > 0 { + self.nanos - NANOS_PER_SEC + } else { + self.nanos + } + } + + /// Returns the total number of whole milliseconds in the duration, + pub fn num_milliseconds(&self) -> i64 { + // A proper Duration will not overflow, because MIN and MAX are defined + // such that the range is exactly i64 milliseconds. + let secs_part = self.num_seconds() * MILLIS_PER_SEC; + let nanos_part = self.nanos_mod_sec() / NANOS_PER_MILLI; + secs_part + nanos_part as i64 + } + + /// Returns the total number of whole microseconds in the duration, + /// or `None` on overflow (exceeding 2^63 microseconds in either direction). + pub fn num_microseconds(&self) -> Option { + let secs_part = try_opt!(self.num_seconds().checked_mul(MICROS_PER_SEC)); + let nanos_part = self.nanos_mod_sec() / NANOS_PER_MICRO; + secs_part.checked_add(nanos_part as i64) + } + + /// Returns the total number of whole nanoseconds in the duration, + /// or `None` on overflow (exceeding 2^63 nanoseconds in either direction). + pub fn num_nanoseconds(&self) -> Option { + let secs_part = try_opt!(self.num_seconds().checked_mul(NANOS_PER_SEC as i64)); + let nanos_part = self.nanos_mod_sec(); + secs_part.checked_add(nanos_part as i64) + } + + /// Add two durations, returning `None` if overflow occurred. + pub fn checked_add(&self, rhs: &Duration) -> Option { + let mut secs = try_opt!(self.secs.checked_add(rhs.secs)); + let mut nanos = self.nanos + rhs.nanos; + if nanos >= NANOS_PER_SEC { + nanos -= NANOS_PER_SEC; + secs = try_opt!(secs.checked_add(1)); + } + let d = Duration { secs: secs, nanos: nanos }; + // Even if d is within the bounds of i64 seconds, + // it might still overflow i64 milliseconds. + if d < MIN || d > MAX { + None + } else { + Some(d) + } + } + + /// Subtract two durations, returning `None` if overflow occurred. + pub fn checked_sub(&self, rhs: &Duration) -> Option { + let mut secs = try_opt!(self.secs.checked_sub(rhs.secs)); + let mut nanos = self.nanos - rhs.nanos; + if nanos < 0 { + nanos += NANOS_PER_SEC; + secs = try_opt!(secs.checked_sub(1)); + } + let d = Duration { secs: secs, nanos: nanos }; + // Even if d is within the bounds of i64 seconds, + // it might still overflow i64 milliseconds. + if d < MIN || d > MAX { + None + } else { + Some(d) + } + } + + /// Returns the duration as an absolute (non-negative) value. + #[inline] + pub fn abs(&self) -> Duration { + if self.secs < 0 && self.nanos != 0 { + Duration { secs: (self.secs + 1).abs(), nanos: NANOS_PER_SEC - self.nanos } + } else { + Duration { secs: self.secs.abs(), nanos: self.nanos } + } + } + + /// The minimum possible `Duration`: `i64::MIN` milliseconds. + #[inline] + pub fn min_value() -> Duration { + MIN + } + + /// The maximum possible `Duration`: `i64::MAX` milliseconds. + #[inline] + pub fn max_value() -> Duration { + MAX + } + + /// A duration where the stored seconds and nanoseconds are equal to zero. + #[inline] + pub fn zero() -> Duration { + Duration { secs: 0, nanos: 0 } + } + + /// Returns `true` if the duration equals `Duration::zero()`. + #[inline] + pub fn is_zero(&self) -> bool { + self.secs == 0 && self.nanos == 0 + } + + /// Creates a `time::Duration` object from `std::time::Duration` + /// + /// This function errors when original duration is larger than the maximum + /// value supported for this type. + pub fn from_std(duration: StdDuration) -> Result { + // We need to check secs as u64 before coercing to i64 + if duration.as_secs() > MAX.secs as u64 { + return Err(OutOfRangeError(())); + } + let d = Duration { secs: duration.as_secs() as i64, nanos: duration.subsec_nanos() as i32 }; + if d > MAX { + return Err(OutOfRangeError(())); + } + Ok(d) + } + + /// Creates a `std::time::Duration` object from `time::Duration` + /// + /// This function errors when duration is less than zero. As standard + /// library implementation is limited to non-negative values. + pub fn to_std(&self) -> Result { + if self.secs < 0 { + return Err(OutOfRangeError(())); + } + Ok(StdDuration::new(self.secs as u64, self.nanos as u32)) + } +} + +impl Neg for Duration { + type Output = Duration; + + #[inline] + fn neg(self) -> Duration { + if self.nanos == 0 { + Duration { secs: -self.secs, nanos: 0 } + } else { + Duration { secs: -self.secs - 1, nanos: NANOS_PER_SEC - self.nanos } + } + } +} + +impl Add for Duration { + type Output = Duration; + + fn add(self, rhs: Duration) -> Duration { + let mut secs = self.secs + rhs.secs; + let mut nanos = self.nanos + rhs.nanos; + if nanos >= NANOS_PER_SEC { + nanos -= NANOS_PER_SEC; + secs += 1; + } + Duration { secs: secs, nanos: nanos } + } +} + +impl Sub for Duration { + type Output = Duration; + + fn sub(self, rhs: Duration) -> Duration { + let mut secs = self.secs - rhs.secs; + let mut nanos = self.nanos - rhs.nanos; + if nanos < 0 { + nanos += NANOS_PER_SEC; + secs -= 1; + } + Duration { secs: secs, nanos: nanos } + } +} + +impl Mul for Duration { + type Output = Duration; + + fn mul(self, rhs: i32) -> Duration { + // Multiply nanoseconds as i64, because it cannot overflow that way. + let total_nanos = self.nanos as i64 * rhs as i64; + let (extra_secs, nanos) = div_mod_floor_64(total_nanos, NANOS_PER_SEC as i64); + let secs = self.secs * rhs as i64 + extra_secs; + Duration { secs: secs, nanos: nanos as i32 } + } +} + +impl Div for Duration { + type Output = Duration; + + fn div(self, rhs: i32) -> Duration { + let mut secs = self.secs / rhs as i64; + let carry = self.secs - secs * rhs as i64; + let extra_nanos = carry * NANOS_PER_SEC as i64 / rhs as i64; + let mut nanos = self.nanos / rhs + extra_nanos as i32; + if nanos >= NANOS_PER_SEC { + nanos -= NANOS_PER_SEC; + secs += 1; + } + if nanos < 0 { + nanos += NANOS_PER_SEC; + secs -= 1; + } + Duration { secs: secs, nanos: nanos } + } +} + +#[cfg(any(feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(feature = "std")))] +impl<'a> std::iter::Sum<&'a Duration> for Duration { + fn sum>(iter: I) -> Duration { + iter.fold(Duration::zero(), |acc, x| acc + *x) + } +} + +#[cfg(any(feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(feature = "std")))] +impl std::iter::Sum for Duration { + fn sum>(iter: I) -> Duration { + iter.fold(Duration::zero(), |acc, x| acc + x) + } +} + +impl fmt::Display for Duration { + /// Format a duration using the [ISO 8601] format + /// + /// [ISO 8601]: https://en.wikipedia.org/wiki/ISO_8601#Durations + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + // technically speaking, negative duration is not valid ISO 8601, + // but we need to print it anyway. + let (abs, sign) = if self.secs < 0 { (-*self, "-") } else { (*self, "") }; + + let days = abs.secs / SECS_PER_DAY; + let secs = abs.secs - days * SECS_PER_DAY; + let hasdate = days != 0; + let hastime = (secs != 0 || abs.nanos != 0) || !hasdate; + + write!(f, "{}P", sign)?; + + if hasdate { + write!(f, "{}D", days)?; + } + if hastime { + if abs.nanos == 0 { + write!(f, "T{}S", secs)?; + } else if abs.nanos % NANOS_PER_MILLI == 0 { + write!(f, "T{}.{:03}S", secs, abs.nanos / NANOS_PER_MILLI)?; + } else if abs.nanos % NANOS_PER_MICRO == 0 { + write!(f, "T{}.{:06}S", secs, abs.nanos / NANOS_PER_MICRO)?; + } else { + write!(f, "T{}.{:09}S", secs, abs.nanos)?; + } + } + Ok(()) + } +} + +/// Represents error when converting `Duration` to/from a standard library +/// implementation +/// +/// The `std::time::Duration` supports a range from zero to `u64::MAX` +/// *seconds*, while this module supports signed range of up to +/// `i64::MAX` of *milliseconds*. +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub struct OutOfRangeError(()); + +impl fmt::Display for OutOfRangeError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "Source duration value is out of range for the target type") + } +} + +#[cfg(any(feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(feature = "std")))] +impl Error for OutOfRangeError { + #[allow(deprecated)] + fn description(&self) -> &str { + "out of range error" + } +} + +// Copied from libnum +#[inline] +fn div_mod_floor_64(this: i64, other: i64) -> (i64, i64) { + (div_floor_64(this, other), mod_floor_64(this, other)) +} + +#[inline] +fn div_floor_64(this: i64, other: i64) -> i64 { + match div_rem_64(this, other) { + (d, r) if (r > 0 && other < 0) || (r < 0 && other > 0) => d - 1, + (d, _) => d, + } +} + +#[inline] +fn mod_floor_64(this: i64, other: i64) -> i64 { + match this % other { + r if (r > 0 && other < 0) || (r < 0 && other > 0) => r + other, + r => r, + } +} + +#[inline] +fn div_rem_64(this: i64, other: i64) -> (i64, i64) { + (this / other, this % other) +} + +#[cfg(feature = "arbitrary")] +impl arbitrary::Arbitrary<'_> for Duration { + fn arbitrary(u: &mut arbitrary::Unstructured) -> arbitrary::Result { + const MIN_SECS: i64 = i64::MIN / MILLIS_PER_SEC - 1; + const MAX_SECS: i64 = i64::MAX / MILLIS_PER_SEC; + + let secs: i64 = u.int_in_range(MIN_SECS..=MAX_SECS)?; + let nanos: i32 = u.int_in_range(0..=(NANOS_PER_SEC - 1))?; + let duration = Duration { secs, nanos }; + + if duration < MIN || duration > MAX { + Err(arbitrary::Error::IncorrectFormat) + } else { + Ok(duration) + } + } +} + +#[cfg(test)] +mod tests { + use super::{Duration, OutOfRangeError, MAX, MIN}; + use std::time::Duration as StdDuration; + use std::{i32, i64}; + + #[test] + fn test_duration() { + assert!(Duration::seconds(1) != Duration::zero()); + assert_eq!(Duration::seconds(1) + Duration::seconds(2), Duration::seconds(3)); + assert_eq!( + Duration::seconds(86399) + Duration::seconds(4), + Duration::days(1) + Duration::seconds(3) + ); + assert_eq!(Duration::days(10) - Duration::seconds(1000), Duration::seconds(863000)); + assert_eq!(Duration::days(10) - Duration::seconds(1000000), Duration::seconds(-136000)); + assert_eq!( + Duration::days(2) + Duration::seconds(86399) + Duration::nanoseconds(1234567890), + Duration::days(3) + Duration::nanoseconds(234567890) + ); + assert_eq!(-Duration::days(3), Duration::days(-3)); + assert_eq!( + -(Duration::days(3) + Duration::seconds(70)), + Duration::days(-4) + Duration::seconds(86400 - 70) + ); + } + + #[test] + fn test_duration_num_days() { + assert_eq!(Duration::zero().num_days(), 0); + assert_eq!(Duration::days(1).num_days(), 1); + assert_eq!(Duration::days(-1).num_days(), -1); + assert_eq!(Duration::seconds(86399).num_days(), 0); + assert_eq!(Duration::seconds(86401).num_days(), 1); + assert_eq!(Duration::seconds(-86399).num_days(), 0); + assert_eq!(Duration::seconds(-86401).num_days(), -1); + assert_eq!(Duration::days(i32::MAX as i64).num_days(), i32::MAX as i64); + assert_eq!(Duration::days(i32::MIN as i64).num_days(), i32::MIN as i64); + } + + #[test] + fn test_duration_num_seconds() { + assert_eq!(Duration::zero().num_seconds(), 0); + assert_eq!(Duration::seconds(1).num_seconds(), 1); + assert_eq!(Duration::seconds(-1).num_seconds(), -1); + assert_eq!(Duration::milliseconds(999).num_seconds(), 0); + assert_eq!(Duration::milliseconds(1001).num_seconds(), 1); + assert_eq!(Duration::milliseconds(-999).num_seconds(), 0); + assert_eq!(Duration::milliseconds(-1001).num_seconds(), -1); + } + + #[test] + fn test_duration_num_milliseconds() { + assert_eq!(Duration::zero().num_milliseconds(), 0); + assert_eq!(Duration::milliseconds(1).num_milliseconds(), 1); + assert_eq!(Duration::milliseconds(-1).num_milliseconds(), -1); + assert_eq!(Duration::microseconds(999).num_milliseconds(), 0); + assert_eq!(Duration::microseconds(1001).num_milliseconds(), 1); + assert_eq!(Duration::microseconds(-999).num_milliseconds(), 0); + assert_eq!(Duration::microseconds(-1001).num_milliseconds(), -1); + assert_eq!(Duration::milliseconds(i64::MAX).num_milliseconds(), i64::MAX); + assert_eq!(Duration::milliseconds(i64::MIN).num_milliseconds(), i64::MIN); + assert_eq!(MAX.num_milliseconds(), i64::MAX); + assert_eq!(MIN.num_milliseconds(), i64::MIN); + } + + #[test] + fn test_duration_num_microseconds() { + assert_eq!(Duration::zero().num_microseconds(), Some(0)); + assert_eq!(Duration::microseconds(1).num_microseconds(), Some(1)); + assert_eq!(Duration::microseconds(-1).num_microseconds(), Some(-1)); + assert_eq!(Duration::nanoseconds(999).num_microseconds(), Some(0)); + assert_eq!(Duration::nanoseconds(1001).num_microseconds(), Some(1)); + assert_eq!(Duration::nanoseconds(-999).num_microseconds(), Some(0)); + assert_eq!(Duration::nanoseconds(-1001).num_microseconds(), Some(-1)); + assert_eq!(Duration::microseconds(i64::MAX).num_microseconds(), Some(i64::MAX)); + assert_eq!(Duration::microseconds(i64::MIN).num_microseconds(), Some(i64::MIN)); + assert_eq!(MAX.num_microseconds(), None); + assert_eq!(MIN.num_microseconds(), None); + + // overflow checks + const MICROS_PER_DAY: i64 = 86400_000_000; + assert_eq!( + Duration::days(i64::MAX / MICROS_PER_DAY).num_microseconds(), + Some(i64::MAX / MICROS_PER_DAY * MICROS_PER_DAY) + ); + assert_eq!( + Duration::days(i64::MIN / MICROS_PER_DAY).num_microseconds(), + Some(i64::MIN / MICROS_PER_DAY * MICROS_PER_DAY) + ); + assert_eq!(Duration::days(i64::MAX / MICROS_PER_DAY + 1).num_microseconds(), None); + assert_eq!(Duration::days(i64::MIN / MICROS_PER_DAY - 1).num_microseconds(), None); + } + + #[test] + fn test_duration_num_nanoseconds() { + assert_eq!(Duration::zero().num_nanoseconds(), Some(0)); + assert_eq!(Duration::nanoseconds(1).num_nanoseconds(), Some(1)); + assert_eq!(Duration::nanoseconds(-1).num_nanoseconds(), Some(-1)); + assert_eq!(Duration::nanoseconds(i64::MAX).num_nanoseconds(), Some(i64::MAX)); + assert_eq!(Duration::nanoseconds(i64::MIN).num_nanoseconds(), Some(i64::MIN)); + assert_eq!(MAX.num_nanoseconds(), None); + assert_eq!(MIN.num_nanoseconds(), None); + + // overflow checks + const NANOS_PER_DAY: i64 = 86400_000_000_000; + assert_eq!( + Duration::days(i64::MAX / NANOS_PER_DAY).num_nanoseconds(), + Some(i64::MAX / NANOS_PER_DAY * NANOS_PER_DAY) + ); + assert_eq!( + Duration::days(i64::MIN / NANOS_PER_DAY).num_nanoseconds(), + Some(i64::MIN / NANOS_PER_DAY * NANOS_PER_DAY) + ); + assert_eq!(Duration::days(i64::MAX / NANOS_PER_DAY + 1).num_nanoseconds(), None); + assert_eq!(Duration::days(i64::MIN / NANOS_PER_DAY - 1).num_nanoseconds(), None); + } + + #[test] + fn test_duration_checked_ops() { + assert_eq!( + Duration::milliseconds(i64::MAX - 1).checked_add(&Duration::microseconds(999)), + Some(Duration::milliseconds(i64::MAX - 2) + Duration::microseconds(1999)) + ); + assert!(Duration::milliseconds(i64::MAX) + .checked_add(&Duration::microseconds(1000)) + .is_none()); + + assert_eq!( + Duration::milliseconds(i64::MIN).checked_sub(&Duration::milliseconds(0)), + Some(Duration::milliseconds(i64::MIN)) + ); + assert!(Duration::milliseconds(i64::MIN).checked_sub(&Duration::milliseconds(1)).is_none()); + } + + #[test] + fn test_duration_abs() { + assert_eq!(Duration::milliseconds(1300).abs(), Duration::milliseconds(1300)); + assert_eq!(Duration::milliseconds(1000).abs(), Duration::milliseconds(1000)); + assert_eq!(Duration::milliseconds(300).abs(), Duration::milliseconds(300)); + assert_eq!(Duration::milliseconds(0).abs(), Duration::milliseconds(0)); + assert_eq!(Duration::milliseconds(-300).abs(), Duration::milliseconds(300)); + assert_eq!(Duration::milliseconds(-700).abs(), Duration::milliseconds(700)); + assert_eq!(Duration::milliseconds(-1000).abs(), Duration::milliseconds(1000)); + assert_eq!(Duration::milliseconds(-1300).abs(), Duration::milliseconds(1300)); + assert_eq!(Duration::milliseconds(-1700).abs(), Duration::milliseconds(1700)); + } + + #[test] + fn test_duration_mul() { + assert_eq!(Duration::zero() * i32::MAX, Duration::zero()); + assert_eq!(Duration::zero() * i32::MIN, Duration::zero()); + assert_eq!(Duration::nanoseconds(1) * 0, Duration::zero()); + assert_eq!(Duration::nanoseconds(1) * 1, Duration::nanoseconds(1)); + assert_eq!(Duration::nanoseconds(1) * 1_000_000_000, Duration::seconds(1)); + assert_eq!(Duration::nanoseconds(1) * -1_000_000_000, -Duration::seconds(1)); + assert_eq!(-Duration::nanoseconds(1) * 1_000_000_000, -Duration::seconds(1)); + assert_eq!( + Duration::nanoseconds(30) * 333_333_333, + Duration::seconds(10) - Duration::nanoseconds(10) + ); + assert_eq!( + (Duration::nanoseconds(1) + Duration::seconds(1) + Duration::days(1)) * 3, + Duration::nanoseconds(3) + Duration::seconds(3) + Duration::days(3) + ); + assert_eq!(Duration::milliseconds(1500) * -2, Duration::seconds(-3)); + assert_eq!(Duration::milliseconds(-1500) * 2, Duration::seconds(-3)); + } + + #[test] + fn test_duration_div() { + assert_eq!(Duration::zero() / i32::MAX, Duration::zero()); + assert_eq!(Duration::zero() / i32::MIN, Duration::zero()); + assert_eq!(Duration::nanoseconds(123_456_789) / 1, Duration::nanoseconds(123_456_789)); + assert_eq!(Duration::nanoseconds(123_456_789) / -1, -Duration::nanoseconds(123_456_789)); + assert_eq!(-Duration::nanoseconds(123_456_789) / -1, Duration::nanoseconds(123_456_789)); + assert_eq!(-Duration::nanoseconds(123_456_789) / 1, -Duration::nanoseconds(123_456_789)); + assert_eq!(Duration::seconds(1) / 3, Duration::nanoseconds(333_333_333)); + assert_eq!(Duration::seconds(4) / 3, Duration::nanoseconds(1_333_333_333)); + assert_eq!(Duration::seconds(-1) / 2, Duration::milliseconds(-500)); + assert_eq!(Duration::seconds(1) / -2, Duration::milliseconds(-500)); + assert_eq!(Duration::seconds(-1) / -2, Duration::milliseconds(500)); + assert_eq!(Duration::seconds(-4) / 3, Duration::nanoseconds(-1_333_333_333)); + assert_eq!(Duration::seconds(-4) / -3, Duration::nanoseconds(1_333_333_333)); + } + + #[test] + fn test_duration_sum() { + let duration_list_1 = [Duration::zero(), Duration::seconds(1)]; + let sum_1: Duration = duration_list_1.iter().sum(); + assert_eq!(sum_1, Duration::seconds(1)); + + let duration_list_2 = + [Duration::zero(), Duration::seconds(1), Duration::seconds(6), Duration::seconds(10)]; + let sum_2: Duration = duration_list_2.iter().sum(); + assert_eq!(sum_2, Duration::seconds(17)); + + let duration_vec = vec![ + Duration::zero(), + Duration::seconds(1), + Duration::seconds(6), + Duration::seconds(10), + ]; + let sum_3: Duration = duration_vec.into_iter().sum(); + assert_eq!(sum_3, Duration::seconds(17)); + } + + #[test] + fn test_duration_fmt() { + assert_eq!(Duration::zero().to_string(), "PT0S"); + assert_eq!(Duration::days(42).to_string(), "P42D"); + assert_eq!(Duration::days(-42).to_string(), "-P42D"); + assert_eq!(Duration::seconds(42).to_string(), "PT42S"); + assert_eq!(Duration::milliseconds(42).to_string(), "PT0.042S"); + assert_eq!(Duration::microseconds(42).to_string(), "PT0.000042S"); + assert_eq!(Duration::nanoseconds(42).to_string(), "PT0.000000042S"); + assert_eq!((Duration::days(7) + Duration::milliseconds(6543)).to_string(), "P7DT6.543S"); + assert_eq!(Duration::seconds(-86401).to_string(), "-P1DT1S"); + assert_eq!(Duration::nanoseconds(-1).to_string(), "-PT0.000000001S"); + + // the format specifier should have no effect on `Duration` + assert_eq!( + format!("{:30}", Duration::days(1) + Duration::milliseconds(2345)), + "P1DT2.345S" + ); + } + + #[test] + fn test_to_std() { + assert_eq!(Duration::seconds(1).to_std(), Ok(StdDuration::new(1, 0))); + assert_eq!(Duration::seconds(86401).to_std(), Ok(StdDuration::new(86401, 0))); + assert_eq!(Duration::milliseconds(123).to_std(), Ok(StdDuration::new(0, 123000000))); + assert_eq!(Duration::milliseconds(123765).to_std(), Ok(StdDuration::new(123, 765000000))); + assert_eq!(Duration::nanoseconds(777).to_std(), Ok(StdDuration::new(0, 777))); + assert_eq!(MAX.to_std(), Ok(StdDuration::new(9223372036854775, 807000000))); + assert_eq!(Duration::seconds(-1).to_std(), Err(OutOfRangeError(()))); + assert_eq!(Duration::milliseconds(-1).to_std(), Err(OutOfRangeError(()))); + } + + #[test] + fn test_from_std() { + assert_eq!(Ok(Duration::seconds(1)), Duration::from_std(StdDuration::new(1, 0))); + assert_eq!(Ok(Duration::seconds(86401)), Duration::from_std(StdDuration::new(86401, 0))); + assert_eq!( + Ok(Duration::milliseconds(123)), + Duration::from_std(StdDuration::new(0, 123000000)) + ); + assert_eq!( + Ok(Duration::milliseconds(123765)), + Duration::from_std(StdDuration::new(123, 765000000)) + ); + assert_eq!(Ok(Duration::nanoseconds(777)), Duration::from_std(StdDuration::new(0, 777))); + assert_eq!(Ok(MAX), Duration::from_std(StdDuration::new(9223372036854775, 807000000))); + assert_eq!( + Duration::from_std(StdDuration::new(9223372036854776, 0)), + Err(OutOfRangeError(())) + ); + assert_eq!( + Duration::from_std(StdDuration::new(9223372036854775, 807000001)), + Err(OutOfRangeError(())) + ); + } +} diff --git a/javascript-engine/external/chrono/src/round.rs b/javascript-engine/external/chrono/src/round.rs new file mode 100644 index 0000000..b95f245 --- /dev/null +++ b/javascript-engine/external/chrono/src/round.rs @@ -0,0 +1,763 @@ +// This is a part of Chrono. +// See README.md and LICENSE.txt for details. + +use crate::datetime::DateTime; +use crate::oldtime::Duration; +use crate::NaiveDateTime; +use crate::TimeZone; +use crate::Timelike; +use core::cmp::Ordering; +use core::fmt; +use core::marker::Sized; +use core::ops::{Add, Sub}; + +/// Extension trait for subsecond rounding or truncation to a maximum number +/// of digits. Rounding can be used to decrease the error variance when +/// serializing/persisting to lower precision. Truncation is the default +/// behavior in Chrono display formatting. Either can be used to guarantee +/// equality (e.g. for testing) when round-tripping through a lower precision +/// format. +pub trait SubsecRound { + /// Return a copy rounded to the specified number of subsecond digits. With + /// 9 or more digits, self is returned unmodified. Halfway values are + /// rounded up (away from zero). + /// + /// # Example + /// ``` rust + /// # use chrono::{DateTime, SubsecRound, Timelike, TimeZone, Utc, NaiveDate}; + /// let dt = NaiveDate::from_ymd_opt(2018, 1, 11).unwrap().and_hms_milli_opt(12, 0, 0, 154).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.round_subsecs(2).nanosecond(), 150_000_000); + /// assert_eq!(dt.round_subsecs(1).nanosecond(), 200_000_000); + /// ``` + fn round_subsecs(self, digits: u16) -> Self; + + /// Return a copy truncated to the specified number of subsecond + /// digits. With 9 or more digits, self is returned unmodified. + /// + /// # Example + /// ``` rust + /// # use chrono::{DateTime, SubsecRound, Timelike, TimeZone, Utc, NaiveDate}; + /// let dt = NaiveDate::from_ymd_opt(2018, 1, 11).unwrap().and_hms_milli_opt(12, 0, 0, 154).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!(dt.trunc_subsecs(2).nanosecond(), 150_000_000); + /// assert_eq!(dt.trunc_subsecs(1).nanosecond(), 100_000_000); + /// ``` + fn trunc_subsecs(self, digits: u16) -> Self; +} + +impl SubsecRound for T +where + T: Timelike + Add + Sub, +{ + fn round_subsecs(self, digits: u16) -> T { + let span = span_for_digits(digits); + let delta_down = self.nanosecond() % span; + if delta_down > 0 { + let delta_up = span - delta_down; + if delta_up <= delta_down { + self + Duration::nanoseconds(delta_up.into()) + } else { + self - Duration::nanoseconds(delta_down.into()) + } + } else { + self // unchanged + } + } + + fn trunc_subsecs(self, digits: u16) -> T { + let span = span_for_digits(digits); + let delta_down = self.nanosecond() % span; + if delta_down > 0 { + self - Duration::nanoseconds(delta_down.into()) + } else { + self // unchanged + } + } +} + +// Return the maximum span in nanoseconds for the target number of digits. +fn span_for_digits(digits: u16) -> u32 { + // fast lookup form of: 10^(9-min(9,digits)) + match digits { + 0 => 1_000_000_000, + 1 => 100_000_000, + 2 => 10_000_000, + 3 => 1_000_000, + 4 => 100_000, + 5 => 10_000, + 6 => 1_000, + 7 => 100, + 8 => 10, + _ => 1, + } +} + +/// Extension trait for rounding or truncating a DateTime by a Duration. +/// +/// # Limitations +/// Both rounding and truncating are done via [`Duration::num_nanoseconds`] and +/// [`DateTime::timestamp_nanos`]. This means that they will fail if either the +/// `Duration` or the `DateTime` are too big to represented as nanoseconds. They +/// will also fail if the `Duration` is bigger than the timestamp. +pub trait DurationRound: Sized { + /// Error that can occur in rounding or truncating + #[cfg(any(feature = "std", test))] + type Err: std::error::Error; + + /// Error that can occur in rounding or truncating + #[cfg(not(any(feature = "std", test)))] + type Err: fmt::Debug + fmt::Display; + + /// Return a copy rounded by Duration. + /// + /// # Example + /// ``` rust + /// # use chrono::{DateTime, DurationRound, Duration, TimeZone, Utc, NaiveDate}; + /// let dt = NaiveDate::from_ymd_opt(2018, 1, 11).unwrap().and_hms_milli_opt(12, 0, 0, 154).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!( + /// dt.duration_round(Duration::milliseconds(10)).unwrap().to_string(), + /// "2018-01-11 12:00:00.150 UTC" + /// ); + /// assert_eq!( + /// dt.duration_round(Duration::days(1)).unwrap().to_string(), + /// "2018-01-12 00:00:00 UTC" + /// ); + /// ``` + fn duration_round(self, duration: Duration) -> Result; + + /// Return a copy truncated by Duration. + /// + /// # Example + /// ``` rust + /// # use chrono::{DateTime, DurationRound, Duration, TimeZone, Utc, NaiveDate}; + /// let dt = NaiveDate::from_ymd_opt(2018, 1, 11).unwrap().and_hms_milli_opt(12, 0, 0, 154).unwrap().and_local_timezone(Utc).unwrap(); + /// assert_eq!( + /// dt.duration_trunc(Duration::milliseconds(10)).unwrap().to_string(), + /// "2018-01-11 12:00:00.150 UTC" + /// ); + /// assert_eq!( + /// dt.duration_trunc(Duration::days(1)).unwrap().to_string(), + /// "2018-01-11 00:00:00 UTC" + /// ); + /// ``` + fn duration_trunc(self, duration: Duration) -> Result; +} + +/// The maximum number of seconds a DateTime can be to be represented as nanoseconds +const MAX_SECONDS_TIMESTAMP_FOR_NANOS: i64 = 9_223_372_036; + +impl DurationRound for DateTime { + type Err = RoundingError; + + fn duration_round(self, duration: Duration) -> Result { + duration_round(self.naive_local(), self, duration) + } + + fn duration_trunc(self, duration: Duration) -> Result { + duration_trunc(self.naive_local(), self, duration) + } +} + +impl DurationRound for NaiveDateTime { + type Err = RoundingError; + + fn duration_round(self, duration: Duration) -> Result { + duration_round(self, self, duration) + } + + fn duration_trunc(self, duration: Duration) -> Result { + duration_trunc(self, self, duration) + } +} + +fn duration_round( + naive: NaiveDateTime, + original: T, + duration: Duration, +) -> Result +where + T: Timelike + Add + Sub, +{ + if let Some(span) = duration.num_nanoseconds() { + if naive.timestamp().abs() > MAX_SECONDS_TIMESTAMP_FOR_NANOS { + return Err(RoundingError::TimestampExceedsLimit); + } + let stamp = naive.timestamp_nanos(); + if span > stamp.abs() { + return Err(RoundingError::DurationExceedsTimestamp); + } + if span == 0 { + return Ok(original); + } + let delta_down = stamp % span; + if delta_down == 0 { + Ok(original) + } else { + let (delta_up, delta_down) = if delta_down < 0 { + (delta_down.abs(), span - delta_down.abs()) + } else { + (span - delta_down, delta_down) + }; + if delta_up <= delta_down { + Ok(original + Duration::nanoseconds(delta_up)) + } else { + Ok(original - Duration::nanoseconds(delta_down)) + } + } + } else { + Err(RoundingError::DurationExceedsLimit) + } +} + +fn duration_trunc( + naive: NaiveDateTime, + original: T, + duration: Duration, +) -> Result +where + T: Timelike + Add + Sub, +{ + if let Some(span) = duration.num_nanoseconds() { + if naive.timestamp().abs() > MAX_SECONDS_TIMESTAMP_FOR_NANOS { + return Err(RoundingError::TimestampExceedsLimit); + } + let stamp = naive.timestamp_nanos(); + if span > stamp.abs() { + return Err(RoundingError::DurationExceedsTimestamp); + } + let delta_down = stamp % span; + match delta_down.cmp(&0) { + Ordering::Equal => Ok(original), + Ordering::Greater => Ok(original - Duration::nanoseconds(delta_down)), + Ordering::Less => Ok(original - Duration::nanoseconds(span - delta_down.abs())), + } + } else { + Err(RoundingError::DurationExceedsLimit) + } +} + +/// An error from rounding by `Duration` +/// +/// See: [`DurationRound`] +#[derive(Debug, Clone, PartialEq, Eq, Copy)] +pub enum RoundingError { + /// Error when the Duration exceeds the Duration from or until the Unix epoch. + /// + /// ``` rust + /// # use chrono::{DateTime, DurationRound, Duration, RoundingError, TimeZone, Utc}; + /// let dt = Utc.with_ymd_and_hms(1970, 12, 12, 0, 0, 0).unwrap(); + /// + /// assert_eq!( + /// dt.duration_round(Duration::days(365)), + /// Err(RoundingError::DurationExceedsTimestamp), + /// ); + /// ``` + DurationExceedsTimestamp, + + /// Error when `Duration.num_nanoseconds` exceeds the limit. + /// + /// ``` rust + /// # use chrono::{DateTime, DurationRound, Duration, RoundingError, TimeZone, Utc, NaiveDate}; + /// let dt = NaiveDate::from_ymd_opt(2260, 12, 31).unwrap().and_hms_nano_opt(23, 59, 59, 1_75_500_000).unwrap().and_local_timezone(Utc).unwrap(); + /// + /// assert_eq!( + /// dt.duration_round(Duration::days(300 * 365)), + /// Err(RoundingError::DurationExceedsLimit) + /// ); + /// ``` + DurationExceedsLimit, + + /// Error when `DateTime.timestamp_nanos` exceeds the limit. + /// + /// ``` rust + /// # use chrono::{DateTime, DurationRound, Duration, RoundingError, TimeZone, Utc}; + /// let dt = Utc.with_ymd_and_hms(2300, 12, 12, 0, 0, 0).unwrap(); + /// + /// assert_eq!(dt.duration_round(Duration::days(1)), Err(RoundingError::TimestampExceedsLimit),); + /// ``` + TimestampExceedsLimit, +} + +impl fmt::Display for RoundingError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { + RoundingError::DurationExceedsTimestamp => { + write!(f, "duration in nanoseconds exceeds timestamp") + } + RoundingError::DurationExceedsLimit => { + write!(f, "duration exceeds num_nanoseconds limit") + } + RoundingError::TimestampExceedsLimit => { + write!(f, "timestamp exceeds num_nanoseconds limit") + } + } + } +} + +#[cfg(any(feature = "std", test))] +#[cfg_attr(docsrs, doc(cfg(feature = "std")))] +impl std::error::Error for RoundingError { + #[allow(deprecated)] + fn description(&self) -> &str { + "error from rounding or truncating with DurationRound" + } +} + +#[cfg(test)] +mod tests { + use super::{Duration, DurationRound, SubsecRound}; + use crate::offset::{FixedOffset, TimeZone, Utc}; + use crate::NaiveDate; + use crate::Timelike; + + #[test] + fn test_round_subsecs() { + let pst = FixedOffset::east_opt(8 * 60 * 60).unwrap(); + let dt = pst + .from_local_datetime( + &NaiveDate::from_ymd_opt(2018, 1, 11) + .unwrap() + .and_hms_nano_opt(10, 5, 13, 84_660_684) + .unwrap(), + ) + .unwrap(); + + assert_eq!(dt.round_subsecs(10), dt); + assert_eq!(dt.round_subsecs(9), dt); + assert_eq!(dt.round_subsecs(8).nanosecond(), 84_660_680); + assert_eq!(dt.round_subsecs(7).nanosecond(), 84_660_700); + assert_eq!(dt.round_subsecs(6).nanosecond(), 84_661_000); + assert_eq!(dt.round_subsecs(5).nanosecond(), 84_660_000); + assert_eq!(dt.round_subsecs(4).nanosecond(), 84_700_000); + assert_eq!(dt.round_subsecs(3).nanosecond(), 85_000_000); + assert_eq!(dt.round_subsecs(2).nanosecond(), 80_000_000); + assert_eq!(dt.round_subsecs(1).nanosecond(), 100_000_000); + + assert_eq!(dt.round_subsecs(0).nanosecond(), 0); + assert_eq!(dt.round_subsecs(0).second(), 13); + + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2018, 1, 11) + .unwrap() + .and_hms_nano_opt(10, 5, 27, 750_500_000) + .unwrap(), + ) + .unwrap(); + assert_eq!(dt.round_subsecs(9), dt); + assert_eq!(dt.round_subsecs(4), dt); + assert_eq!(dt.round_subsecs(3).nanosecond(), 751_000_000); + assert_eq!(dt.round_subsecs(2).nanosecond(), 750_000_000); + assert_eq!(dt.round_subsecs(1).nanosecond(), 800_000_000); + + assert_eq!(dt.round_subsecs(0).nanosecond(), 0); + assert_eq!(dt.round_subsecs(0).second(), 28); + } + + #[test] + fn test_round_leap_nanos() { + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2016, 12, 31) + .unwrap() + .and_hms_nano_opt(23, 59, 59, 1_750_500_000) + .unwrap(), + ) + .unwrap(); + assert_eq!(dt.round_subsecs(9), dt); + assert_eq!(dt.round_subsecs(4), dt); + assert_eq!(dt.round_subsecs(2).nanosecond(), 1_750_000_000); + assert_eq!(dt.round_subsecs(1).nanosecond(), 1_800_000_000); + assert_eq!(dt.round_subsecs(1).second(), 59); + + assert_eq!(dt.round_subsecs(0).nanosecond(), 0); + assert_eq!(dt.round_subsecs(0).second(), 0); + } + + #[test] + fn test_trunc_subsecs() { + let pst = FixedOffset::east_opt(8 * 60 * 60).unwrap(); + let dt = pst + .from_local_datetime( + &NaiveDate::from_ymd_opt(2018, 1, 11) + .unwrap() + .and_hms_nano_opt(10, 5, 13, 84_660_684) + .unwrap(), + ) + .unwrap(); + + assert_eq!(dt.trunc_subsecs(10), dt); + assert_eq!(dt.trunc_subsecs(9), dt); + assert_eq!(dt.trunc_subsecs(8).nanosecond(), 84_660_680); + assert_eq!(dt.trunc_subsecs(7).nanosecond(), 84_660_600); + assert_eq!(dt.trunc_subsecs(6).nanosecond(), 84_660_000); + assert_eq!(dt.trunc_subsecs(5).nanosecond(), 84_660_000); + assert_eq!(dt.trunc_subsecs(4).nanosecond(), 84_600_000); + assert_eq!(dt.trunc_subsecs(3).nanosecond(), 84_000_000); + assert_eq!(dt.trunc_subsecs(2).nanosecond(), 80_000_000); + assert_eq!(dt.trunc_subsecs(1).nanosecond(), 0); + + assert_eq!(dt.trunc_subsecs(0).nanosecond(), 0); + assert_eq!(dt.trunc_subsecs(0).second(), 13); + + let dt = pst + .from_local_datetime( + &NaiveDate::from_ymd_opt(2018, 1, 11) + .unwrap() + .and_hms_nano_opt(10, 5, 27, 750_500_000) + .unwrap(), + ) + .unwrap(); + assert_eq!(dt.trunc_subsecs(9), dt); + assert_eq!(dt.trunc_subsecs(4), dt); + assert_eq!(dt.trunc_subsecs(3).nanosecond(), 750_000_000); + assert_eq!(dt.trunc_subsecs(2).nanosecond(), 750_000_000); + assert_eq!(dt.trunc_subsecs(1).nanosecond(), 700_000_000); + + assert_eq!(dt.trunc_subsecs(0).nanosecond(), 0); + assert_eq!(dt.trunc_subsecs(0).second(), 27); + } + + #[test] + fn test_trunc_leap_nanos() { + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2016, 12, 31) + .unwrap() + .and_hms_nano_opt(23, 59, 59, 1_750_500_000) + .unwrap(), + ) + .unwrap(); + assert_eq!(dt.trunc_subsecs(9), dt); + assert_eq!(dt.trunc_subsecs(4), dt); + assert_eq!(dt.trunc_subsecs(2).nanosecond(), 1_750_000_000); + assert_eq!(dt.trunc_subsecs(1).nanosecond(), 1_700_000_000); + assert_eq!(dt.trunc_subsecs(1).second(), 59); + + assert_eq!(dt.trunc_subsecs(0).nanosecond(), 1_000_000_000); + assert_eq!(dt.trunc_subsecs(0).second(), 59); + } + + #[test] + fn test_duration_round() { + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2016, 12, 31) + .unwrap() + .and_hms_nano_opt(23, 59, 59, 175_500_000) + .unwrap(), + ) + .unwrap(); + + assert_eq!( + dt.duration_round(Duration::zero()).unwrap().to_string(), + "2016-12-31 23:59:59.175500 UTC" + ); + + assert_eq!( + dt.duration_round(Duration::milliseconds(10)).unwrap().to_string(), + "2016-12-31 23:59:59.180 UTC" + ); + + // round up + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2012, 12, 12) + .unwrap() + .and_hms_milli_opt(18, 22, 30, 0) + .unwrap(), + ) + .unwrap(); + assert_eq!( + dt.duration_round(Duration::minutes(5)).unwrap().to_string(), + "2012-12-12 18:25:00 UTC" + ); + // round down + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2012, 12, 12) + .unwrap() + .and_hms_milli_opt(18, 22, 29, 999) + .unwrap(), + ) + .unwrap(); + assert_eq!( + dt.duration_round(Duration::minutes(5)).unwrap().to_string(), + "2012-12-12 18:20:00 UTC" + ); + + assert_eq!( + dt.duration_round(Duration::minutes(10)).unwrap().to_string(), + "2012-12-12 18:20:00 UTC" + ); + assert_eq!( + dt.duration_round(Duration::minutes(30)).unwrap().to_string(), + "2012-12-12 18:30:00 UTC" + ); + assert_eq!( + dt.duration_round(Duration::hours(1)).unwrap().to_string(), + "2012-12-12 18:00:00 UTC" + ); + assert_eq!( + dt.duration_round(Duration::days(1)).unwrap().to_string(), + "2012-12-13 00:00:00 UTC" + ); + + // timezone east + let dt = + FixedOffset::east_opt(3600).unwrap().with_ymd_and_hms(2020, 10, 27, 15, 0, 0).unwrap(); + assert_eq!( + dt.duration_round(Duration::days(1)).unwrap().to_string(), + "2020-10-28 00:00:00 +01:00" + ); + assert_eq!( + dt.duration_round(Duration::weeks(1)).unwrap().to_string(), + "2020-10-29 00:00:00 +01:00" + ); + + // timezone west + let dt = + FixedOffset::west_opt(3600).unwrap().with_ymd_and_hms(2020, 10, 27, 15, 0, 0).unwrap(); + assert_eq!( + dt.duration_round(Duration::days(1)).unwrap().to_string(), + "2020-10-28 00:00:00 -01:00" + ); + assert_eq!( + dt.duration_round(Duration::weeks(1)).unwrap().to_string(), + "2020-10-29 00:00:00 -01:00" + ); + } + + #[test] + fn test_duration_round_naive() { + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2016, 12, 31) + .unwrap() + .and_hms_nano_opt(23, 59, 59, 175_500_000) + .unwrap(), + ) + .unwrap() + .naive_utc(); + + assert_eq!( + dt.duration_round(Duration::zero()).unwrap().to_string(), + "2016-12-31 23:59:59.175500" + ); + + assert_eq!( + dt.duration_round(Duration::milliseconds(10)).unwrap().to_string(), + "2016-12-31 23:59:59.180" + ); + + // round up + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2012, 12, 12) + .unwrap() + .and_hms_milli_opt(18, 22, 30, 0) + .unwrap(), + ) + .unwrap() + .naive_utc(); + assert_eq!( + dt.duration_round(Duration::minutes(5)).unwrap().to_string(), + "2012-12-12 18:25:00" + ); + // round down + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2012, 12, 12) + .unwrap() + .and_hms_milli_opt(18, 22, 29, 999) + .unwrap(), + ) + .unwrap() + .naive_utc(); + assert_eq!( + dt.duration_round(Duration::minutes(5)).unwrap().to_string(), + "2012-12-12 18:20:00" + ); + + assert_eq!( + dt.duration_round(Duration::minutes(10)).unwrap().to_string(), + "2012-12-12 18:20:00" + ); + assert_eq!( + dt.duration_round(Duration::minutes(30)).unwrap().to_string(), + "2012-12-12 18:30:00" + ); + assert_eq!( + dt.duration_round(Duration::hours(1)).unwrap().to_string(), + "2012-12-12 18:00:00" + ); + assert_eq!( + dt.duration_round(Duration::days(1)).unwrap().to_string(), + "2012-12-13 00:00:00" + ); + } + + #[test] + fn test_duration_round_pre_epoch() { + let dt = Utc.with_ymd_and_hms(1969, 12, 12, 12, 12, 12).unwrap(); + assert_eq!( + dt.duration_round(Duration::minutes(10)).unwrap().to_string(), + "1969-12-12 12:10:00 UTC" + ); + } + + #[test] + fn test_duration_trunc() { + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2016, 12, 31) + .unwrap() + .and_hms_nano_opt(23, 59, 59, 175_500_000) + .unwrap(), + ) + .unwrap(); + + assert_eq!( + dt.duration_trunc(Duration::milliseconds(10)).unwrap().to_string(), + "2016-12-31 23:59:59.170 UTC" + ); + + // would round up + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2012, 12, 12) + .unwrap() + .and_hms_milli_opt(18, 22, 30, 0) + .unwrap(), + ) + .unwrap(); + assert_eq!( + dt.duration_trunc(Duration::minutes(5)).unwrap().to_string(), + "2012-12-12 18:20:00 UTC" + ); + // would round down + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2012, 12, 12) + .unwrap() + .and_hms_milli_opt(18, 22, 29, 999) + .unwrap(), + ) + .unwrap(); + assert_eq!( + dt.duration_trunc(Duration::minutes(5)).unwrap().to_string(), + "2012-12-12 18:20:00 UTC" + ); + assert_eq!( + dt.duration_trunc(Duration::minutes(10)).unwrap().to_string(), + "2012-12-12 18:20:00 UTC" + ); + assert_eq!( + dt.duration_trunc(Duration::minutes(30)).unwrap().to_string(), + "2012-12-12 18:00:00 UTC" + ); + assert_eq!( + dt.duration_trunc(Duration::hours(1)).unwrap().to_string(), + "2012-12-12 18:00:00 UTC" + ); + assert_eq!( + dt.duration_trunc(Duration::days(1)).unwrap().to_string(), + "2012-12-12 00:00:00 UTC" + ); + + // timezone east + let dt = + FixedOffset::east_opt(3600).unwrap().with_ymd_and_hms(2020, 10, 27, 15, 0, 0).unwrap(); + assert_eq!( + dt.duration_trunc(Duration::days(1)).unwrap().to_string(), + "2020-10-27 00:00:00 +01:00" + ); + assert_eq!( + dt.duration_trunc(Duration::weeks(1)).unwrap().to_string(), + "2020-10-22 00:00:00 +01:00" + ); + + // timezone west + let dt = + FixedOffset::west_opt(3600).unwrap().with_ymd_and_hms(2020, 10, 27, 15, 0, 0).unwrap(); + assert_eq!( + dt.duration_trunc(Duration::days(1)).unwrap().to_string(), + "2020-10-27 00:00:00 -01:00" + ); + assert_eq!( + dt.duration_trunc(Duration::weeks(1)).unwrap().to_string(), + "2020-10-22 00:00:00 -01:00" + ); + } + + #[test] + fn test_duration_trunc_naive() { + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2016, 12, 31) + .unwrap() + .and_hms_nano_opt(23, 59, 59, 175_500_000) + .unwrap(), + ) + .unwrap() + .naive_utc(); + + assert_eq!( + dt.duration_trunc(Duration::milliseconds(10)).unwrap().to_string(), + "2016-12-31 23:59:59.170" + ); + + // would round up + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2012, 12, 12) + .unwrap() + .and_hms_milli_opt(18, 22, 30, 0) + .unwrap(), + ) + .unwrap() + .naive_utc(); + assert_eq!( + dt.duration_trunc(Duration::minutes(5)).unwrap().to_string(), + "2012-12-12 18:20:00" + ); + // would round down + let dt = Utc + .from_local_datetime( + &NaiveDate::from_ymd_opt(2012, 12, 12) + .unwrap() + .and_hms_milli_opt(18, 22, 29, 999) + .unwrap(), + ) + .unwrap() + .naive_utc(); + assert_eq!( + dt.duration_trunc(Duration::minutes(5)).unwrap().to_string(), + "2012-12-12 18:20:00" + ); + assert_eq!( + dt.duration_trunc(Duration::minutes(10)).unwrap().to_string(), + "2012-12-12 18:20:00" + ); + assert_eq!( + dt.duration_trunc(Duration::minutes(30)).unwrap().to_string(), + "2012-12-12 18:00:00" + ); + assert_eq!( + dt.duration_trunc(Duration::hours(1)).unwrap().to_string(), + "2012-12-12 18:00:00" + ); + assert_eq!( + dt.duration_trunc(Duration::days(1)).unwrap().to_string(), + "2012-12-12 00:00:00" + ); + } + + #[test] + fn test_duration_trunc_pre_epoch() { + let dt = Utc.with_ymd_and_hms(1969, 12, 12, 12, 12, 12).unwrap(); + assert_eq!( + dt.duration_trunc(Duration::minutes(10)).unwrap().to_string(), + "1969-12-12 12:10:00 UTC" + ); + } +} diff --git a/javascript-engine/external/chrono/src/traits.rs b/javascript-engine/external/chrono/src/traits.rs new file mode 100644 index 0000000..1b6af69 --- /dev/null +++ b/javascript-engine/external/chrono/src/traits.rs @@ -0,0 +1,241 @@ +use crate::{IsoWeek, Weekday}; + +/// The common set of methods for date component. +pub trait Datelike: Sized { + /// Returns the year number in the [calendar date](./naive/struct.NaiveDate.html#calendar-date). + fn year(&self) -> i32; + + /// Returns the absolute year number starting from 1 with a boolean flag, + /// which is false when the year predates the epoch (BCE/BC) and true otherwise (CE/AD). + #[inline] + fn year_ce(&self) -> (bool, u32) { + let year = self.year(); + if year < 1 { + (false, (1 - year) as u32) + } else { + (true, year as u32) + } + } + + /// Returns the month number starting from 1. + /// + /// The return value ranges from 1 to 12. + fn month(&self) -> u32; + + /// Returns the month number starting from 0. + /// + /// The return value ranges from 0 to 11. + fn month0(&self) -> u32; + + /// Returns the day of month starting from 1. + /// + /// The return value ranges from 1 to 31. (The last day of month differs by months.) + fn day(&self) -> u32; + + /// Returns the day of month starting from 0. + /// + /// The return value ranges from 0 to 30. (The last day of month differs by months.) + fn day0(&self) -> u32; + + /// Returns the day of year starting from 1. + /// + /// The return value ranges from 1 to 366. (The last day of year differs by years.) + fn ordinal(&self) -> u32; + + /// Returns the day of year starting from 0. + /// + /// The return value ranges from 0 to 365. (The last day of year differs by years.) + fn ordinal0(&self) -> u32; + + /// Returns the day of week. + fn weekday(&self) -> Weekday; + + /// Returns the ISO week. + fn iso_week(&self) -> IsoWeek; + + /// Makes a new value with the year number changed. + /// + /// Returns `None` when the resulting value would be invalid. + fn with_year(&self, year: i32) -> Option; + + /// Makes a new value with the month number (starting from 1) changed. + /// + /// Returns `None` when the resulting value would be invalid. + fn with_month(&self, month: u32) -> Option; + + /// Makes a new value with the month number (starting from 0) changed. + /// + /// Returns `None` when the resulting value would be invalid. + fn with_month0(&self, month0: u32) -> Option; + + /// Makes a new value with the day of month (starting from 1) changed. + /// + /// Returns `None` when the resulting value would be invalid. + fn with_day(&self, day: u32) -> Option; + + /// Makes a new value with the day of month (starting from 0) changed. + /// + /// Returns `None` when the resulting value would be invalid. + fn with_day0(&self, day0: u32) -> Option; + + /// Makes a new value with the day of year (starting from 1) changed. + /// + /// Returns `None` when the resulting value would be invalid. + fn with_ordinal(&self, ordinal: u32) -> Option; + + /// Makes a new value with the day of year (starting from 0) changed. + /// + /// Returns `None` when the resulting value would be invalid. + fn with_ordinal0(&self, ordinal0: u32) -> Option; + + /// Counts the days in the proleptic Gregorian calendar, with January 1, Year 1 (CE) as day 1. + /// + /// # Examples + /// + /// ``` + /// use chrono::{NaiveDate, Datelike}; + /// + /// assert_eq!(NaiveDate::from_ymd_opt(1970, 1, 1).unwrap().num_days_from_ce(), 719_163); + /// assert_eq!(NaiveDate::from_ymd_opt(2, 1, 1).unwrap().num_days_from_ce(), 366); + /// assert_eq!(NaiveDate::from_ymd_opt(1, 1, 1).unwrap().num_days_from_ce(), 1); + /// assert_eq!(NaiveDate::from_ymd_opt(0, 1, 1).unwrap().num_days_from_ce(), -365); + /// ``` + fn num_days_from_ce(&self) -> i32 { + // See test_num_days_from_ce_against_alternative_impl below for a more straightforward + // implementation. + + // we know this wouldn't overflow since year is limited to 1/2^13 of i32's full range. + let mut year = self.year() - 1; + let mut ndays = 0; + if year < 0 { + let excess = 1 + (-year) / 400; + year += excess * 400; + ndays -= excess * 146_097; + } + let div_100 = year / 100; + ndays += ((year * 1461) >> 2) - div_100 + (div_100 >> 2); + ndays + self.ordinal() as i32 + } +} + +/// The common set of methods for time component. +pub trait Timelike: Sized { + /// Returns the hour number from 0 to 23. + fn hour(&self) -> u32; + + /// Returns the hour number from 1 to 12 with a boolean flag, + /// which is false for AM and true for PM. + #[inline] + fn hour12(&self) -> (bool, u32) { + let hour = self.hour(); + let mut hour12 = hour % 12; + if hour12 == 0 { + hour12 = 12; + } + (hour >= 12, hour12) + } + + /// Returns the minute number from 0 to 59. + fn minute(&self) -> u32; + + /// Returns the second number from 0 to 59. + fn second(&self) -> u32; + + /// Returns the number of nanoseconds since the whole non-leap second. + /// The range from 1,000,000,000 to 1,999,999,999 represents + /// the [leap second](./naive/struct.NaiveTime.html#leap-second-handling). + fn nanosecond(&self) -> u32; + + /// Makes a new value with the hour number changed. + /// + /// Returns `None` when the resulting value would be invalid. + fn with_hour(&self, hour: u32) -> Option; + + /// Makes a new value with the minute number changed. + /// + /// Returns `None` when the resulting value would be invalid. + fn with_minute(&self, min: u32) -> Option; + + /// Makes a new value with the second number changed. + /// + /// Returns `None` when the resulting value would be invalid. + /// As with the [`second`](#tymethod.second) method, + /// the input range is restricted to 0 through 59. + fn with_second(&self, sec: u32) -> Option; + + /// Makes a new value with nanoseconds since the whole non-leap second changed. + /// + /// Returns `None` when the resulting value would be invalid. + /// As with the [`nanosecond`](#tymethod.nanosecond) method, + /// the input range can exceed 1,000,000,000 for leap seconds. + fn with_nanosecond(&self, nano: u32) -> Option; + + /// Returns the number of non-leap seconds past the last midnight. + #[inline] + fn num_seconds_from_midnight(&self) -> u32 { + self.hour() * 3600 + self.minute() * 60 + self.second() + } +} + +#[cfg(test)] +mod tests { + use super::Datelike; + use crate::{Duration, NaiveDate}; + + /// Tests `Datelike::num_days_from_ce` against an alternative implementation. + /// + /// The alternative implementation is not as short as the current one but it is simpler to + /// understand, with less unexplained magic constants. + #[test] + fn test_num_days_from_ce_against_alternative_impl() { + /// Returns the number of multiples of `div` in the range `start..end`. + /// + /// If the range `start..end` is back-to-front, i.e. `start` is greater than `end`, the + /// behaviour is defined by the following equation: + /// `in_between(start, end, div) == - in_between(end, start, div)`. + /// + /// When `div` is 1, this is equivalent to `end - start`, i.e. the length of `start..end`. + /// + /// # Panics + /// + /// Panics if `div` is not positive. + fn in_between(start: i32, end: i32, div: i32) -> i32 { + assert!(div > 0, "in_between: nonpositive div = {}", div); + let start = (start.div_euclid(div), start.rem_euclid(div)); + let end = (end.div_euclid(div), end.rem_euclid(div)); + // The lowest multiple of `div` greater than or equal to `start`, divided. + let start = start.0 + (start.1 != 0) as i32; + // The lowest multiple of `div` greater than or equal to `end`, divided. + let end = end.0 + (end.1 != 0) as i32; + end - start + } + + /// Alternative implementation to `Datelike::num_days_from_ce` + fn num_days_from_ce(date: &Date) -> i32 { + let year = date.year(); + let diff = move |div| in_between(1, year, div); + // 365 days a year, one more in leap years. In the gregorian calendar, leap years are all + // the multiples of 4 except multiples of 100 but including multiples of 400. + date.ordinal() as i32 + 365 * diff(1) + diff(4) - diff(100) + diff(400) + } + + use num_iter::range_inclusive; + + for year in range_inclusive(NaiveDate::MIN.year(), NaiveDate::MAX.year()) { + let jan1_year = NaiveDate::from_ymd_opt(year, 1, 1).unwrap(); + assert_eq!( + jan1_year.num_days_from_ce(), + num_days_from_ce(&jan1_year), + "on {:?}", + jan1_year + ); + let mid_year = jan1_year + Duration::days(133); + assert_eq!( + mid_year.num_days_from_ce(), + num_days_from_ce(&mid_year), + "on {:?}", + mid_year + ); + } + } +} diff --git a/javascript-engine/external/chrono/src/weekday.rs b/javascript-engine/external/chrono/src/weekday.rs new file mode 100644 index 0000000..bd30e19 --- /dev/null +++ b/javascript-engine/external/chrono/src/weekday.rs @@ -0,0 +1,312 @@ +use core::fmt; + +#[cfg(feature = "rkyv")] +use rkyv::{Archive, Deserialize, Serialize}; + +/// The day of week. +/// +/// The order of the days of week depends on the context. +/// (This is why this type does *not* implement `PartialOrd` or `Ord` traits.) +/// One should prefer `*_from_monday` or `*_from_sunday` methods to get the correct result. +#[derive(PartialEq, Eq, Copy, Clone, Debug, Hash)] +#[cfg_attr(feature = "rustc-serialize", derive(RustcEncodable, RustcDecodable))] +#[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))] +#[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))] +pub enum Weekday { + /// Monday. + Mon = 0, + /// Tuesday. + Tue = 1, + /// Wednesday. + Wed = 2, + /// Thursday. + Thu = 3, + /// Friday. + Fri = 4, + /// Saturday. + Sat = 5, + /// Sunday. + Sun = 6, +} + +impl Weekday { + /// The next day in the week. + /// + /// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun` + /// ----------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- + /// `w.succ()`: | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun` | `Mon` + #[inline] + pub fn succ(&self) -> Weekday { + match *self { + Weekday::Mon => Weekday::Tue, + Weekday::Tue => Weekday::Wed, + Weekday::Wed => Weekday::Thu, + Weekday::Thu => Weekday::Fri, + Weekday::Fri => Weekday::Sat, + Weekday::Sat => Weekday::Sun, + Weekday::Sun => Weekday::Mon, + } + } + + /// The previous day in the week. + /// + /// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun` + /// ----------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- + /// `w.pred()`: | `Sun` | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` + #[inline] + pub fn pred(&self) -> Weekday { + match *self { + Weekday::Mon => Weekday::Sun, + Weekday::Tue => Weekday::Mon, + Weekday::Wed => Weekday::Tue, + Weekday::Thu => Weekday::Wed, + Weekday::Fri => Weekday::Thu, + Weekday::Sat => Weekday::Fri, + Weekday::Sun => Weekday::Sat, + } + } + + /// Returns a day-of-week number starting from Monday = 1. (ISO 8601 weekday number) + /// + /// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun` + /// ------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- + /// `w.number_from_monday()`: | 1 | 2 | 3 | 4 | 5 | 6 | 7 + #[inline] + pub fn number_from_monday(&self) -> u32 { + match *self { + Weekday::Mon => 1, + Weekday::Tue => 2, + Weekday::Wed => 3, + Weekday::Thu => 4, + Weekday::Fri => 5, + Weekday::Sat => 6, + Weekday::Sun => 7, + } + } + + /// Returns a day-of-week number starting from Sunday = 1. + /// + /// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun` + /// ------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- + /// `w.number_from_sunday()`: | 2 | 3 | 4 | 5 | 6 | 7 | 1 + #[inline] + pub fn number_from_sunday(&self) -> u32 { + match *self { + Weekday::Mon => 2, + Weekday::Tue => 3, + Weekday::Wed => 4, + Weekday::Thu => 5, + Weekday::Fri => 6, + Weekday::Sat => 7, + Weekday::Sun => 1, + } + } + + /// Returns a day-of-week number starting from Monday = 0. + /// + /// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun` + /// --------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- + /// `w.num_days_from_monday()`: | 0 | 1 | 2 | 3 | 4 | 5 | 6 + #[inline] + pub fn num_days_from_monday(&self) -> u32 { + match *self { + Weekday::Mon => 0, + Weekday::Tue => 1, + Weekday::Wed => 2, + Weekday::Thu => 3, + Weekday::Fri => 4, + Weekday::Sat => 5, + Weekday::Sun => 6, + } + } + + /// Returns a day-of-week number starting from Sunday = 0. + /// + /// `w`: | `Mon` | `Tue` | `Wed` | `Thu` | `Fri` | `Sat` | `Sun` + /// --------------------------- | ----- | ----- | ----- | ----- | ----- | ----- | ----- + /// `w.num_days_from_sunday()`: | 1 | 2 | 3 | 4 | 5 | 6 | 0 + #[inline] + pub fn num_days_from_sunday(&self) -> u32 { + match *self { + Weekday::Mon => 1, + Weekday::Tue => 2, + Weekday::Wed => 3, + Weekday::Thu => 4, + Weekday::Fri => 5, + Weekday::Sat => 6, + Weekday::Sun => 0, + } + } +} + +impl fmt::Display for Weekday { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.write_str(match *self { + Weekday::Mon => "Mon", + Weekday::Tue => "Tue", + Weekday::Wed => "Wed", + Weekday::Thu => "Thu", + Weekday::Fri => "Fri", + Weekday::Sat => "Sat", + Weekday::Sun => "Sun", + }) + } +} + +/// Any weekday can be represented as an integer from 0 to 6, which equals to +/// [`Weekday::num_days_from_monday`](#method.num_days_from_monday) in this implementation. +/// Do not heavily depend on this though; use explicit methods whenever possible. +impl num_traits::FromPrimitive for Weekday { + #[inline] + fn from_i64(n: i64) -> Option { + match n { + 0 => Some(Weekday::Mon), + 1 => Some(Weekday::Tue), + 2 => Some(Weekday::Wed), + 3 => Some(Weekday::Thu), + 4 => Some(Weekday::Fri), + 5 => Some(Weekday::Sat), + 6 => Some(Weekday::Sun), + _ => None, + } + } + + #[inline] + fn from_u64(n: u64) -> Option { + match n { + 0 => Some(Weekday::Mon), + 1 => Some(Weekday::Tue), + 2 => Some(Weekday::Wed), + 3 => Some(Weekday::Thu), + 4 => Some(Weekday::Fri), + 5 => Some(Weekday::Sat), + 6 => Some(Weekday::Sun), + _ => None, + } + } +} + +/// An error resulting from reading `Weekday` value with `FromStr`. +#[derive(Clone, PartialEq, Eq)] +pub struct ParseWeekdayError { + pub(crate) _dummy: (), +} + +#[cfg(feature = "std")] +#[cfg_attr(docsrs, doc(cfg(feature = "std")))] +impl std::error::Error for ParseWeekdayError {} + +impl fmt::Display for ParseWeekdayError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.write_fmt(format_args!("{:?}", self)) + } +} + +impl fmt::Debug for ParseWeekdayError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "ParseWeekdayError {{ .. }}") + } +} + +// the actual `FromStr` implementation is in the `format` module to leverage the existing code + +#[cfg(feature = "serde")] +#[cfg_attr(docsrs, doc(cfg(feature = "serde")))] +mod weekday_serde { + use super::Weekday; + use core::fmt; + use serde::{de, ser}; + + impl ser::Serialize for Weekday { + fn serialize(&self, serializer: S) -> Result + where + S: ser::Serializer, + { + serializer.collect_str(&self) + } + } + + struct WeekdayVisitor; + + impl<'de> de::Visitor<'de> for WeekdayVisitor { + type Value = Weekday; + + fn expecting(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.write_str("Weekday") + } + + fn visit_str(self, value: &str) -> Result + where + E: de::Error, + { + value.parse().map_err(|_| E::custom("short or long weekday names expected")) + } + } + + impl<'de> de::Deserialize<'de> for Weekday { + fn deserialize(deserializer: D) -> Result + where + D: de::Deserializer<'de>, + { + deserializer.deserialize_str(WeekdayVisitor) + } + } + + #[test] + fn test_serde_serialize() { + use serde_json::to_string; + use Weekday::*; + + let cases: Vec<(Weekday, &str)> = vec![ + (Mon, "\"Mon\""), + (Tue, "\"Tue\""), + (Wed, "\"Wed\""), + (Thu, "\"Thu\""), + (Fri, "\"Fri\""), + (Sat, "\"Sat\""), + (Sun, "\"Sun\""), + ]; + + for (weekday, expected_str) in cases { + let string = to_string(&weekday).unwrap(); + assert_eq!(string, expected_str); + } + } + + #[test] + fn test_serde_deserialize() { + use serde_json::from_str; + use Weekday::*; + + let cases: Vec<(&str, Weekday)> = vec![ + ("\"mon\"", Mon), + ("\"MONDAY\"", Mon), + ("\"MonDay\"", Mon), + ("\"mOn\"", Mon), + ("\"tue\"", Tue), + ("\"tuesday\"", Tue), + ("\"wed\"", Wed), + ("\"wednesday\"", Wed), + ("\"thu\"", Thu), + ("\"thursday\"", Thu), + ("\"fri\"", Fri), + ("\"friday\"", Fri), + ("\"sat\"", Sat), + ("\"saturday\"", Sat), + ("\"sun\"", Sun), + ("\"sunday\"", Sun), + ]; + + for (str, expected_weekday) in cases { + let weekday = from_str::(str).unwrap(); + assert_eq!(weekday, expected_weekday); + } + + let errors: Vec<&str> = + vec!["\"not a weekday\"", "\"monDAYs\"", "\"mond\"", "mon", "\"thur\"", "\"thurs\""]; + + for str in errors { + from_str::(str).unwrap_err(); + } + } +} diff --git a/javascript-engine/external/chrono/tests/dateutils.rs b/javascript-engine/external/chrono/tests/dateutils.rs new file mode 100644 index 0000000..130649a --- /dev/null +++ b/javascript-engine/external/chrono/tests/dateutils.rs @@ -0,0 +1,76 @@ +use chrono::offset::TimeZone; +use chrono::Local; +use chrono::{Datelike, NaiveDate, NaiveDateTime, Timelike}; + +use std::{path, process}; + +#[cfg(unix)] +fn verify_against_date_command_local(path: &'static str, dt: NaiveDateTime) { + let output = process::Command::new(path) + .arg("-d") + .arg(format!("{}-{:02}-{:02} {:02}:05:01", dt.year(), dt.month(), dt.day(), dt.hour())) + .arg("+%Y-%m-%d %H:%M:%S %:z") + .output() + .unwrap(); + + let date_command_str = String::from_utf8(output.stdout).unwrap(); + + // The below would be preferred. At this stage neither earliest() or latest() + // seems to be consistent with the output of the `date` command, so we simply + // compare both. + // let local = Local + // .with_ymd_and_hms(year, month, day, hour, 5, 1) + // // looks like the "date" command always returns a given time when it is ambiguous + // .earliest(); + + // if let Some(local) = local { + // assert_eq!(format!("{}\n", local), date_command_str); + // } else { + // // we are in a "Spring forward gap" due to DST, and so date also returns "" + // assert_eq!("", date_command_str); + // } + + // This is used while a decision is made wheter the `date` output needs to + // be exactly matched, or whether LocalResult::Ambigious should be handled + // differently + + let date = NaiveDate::from_ymd_opt(dt.year(), dt.month(), dt.day()).unwrap(); + match Local.from_local_datetime(&date.and_hms_opt(dt.hour(), 5, 1).unwrap()) { + chrono::LocalResult::Ambiguous(a, b) => assert!( + format!("{}\n", a) == date_command_str || format!("{}\n", b) == date_command_str + ), + chrono::LocalResult::Single(a) => { + assert_eq!(format!("{}\n", a), date_command_str); + } + chrono::LocalResult::None => { + assert_eq!("", date_command_str); + } + } +} + +#[test] +#[cfg(unix)] +fn try_verify_against_date_command() { + let date_path = "/usr/bin/date"; + + if !path::Path::new(date_path).exists() { + // date command not found, skipping + // avoid running this on macOS, which has path /bin/date + // as the required CLI arguments are not present in the + // macOS build. + return; + } + + let mut date = NaiveDate::from_ymd_opt(1975, 1, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(); + + while date.year() < 2078 { + if (1975..=1977).contains(&date.year()) + || (2020..=2022).contains(&date.year()) + || (2073..=2077).contains(&date.year()) + { + verify_against_date_command_local(date_path, date); + } + + date += chrono::Duration::hours(1); + } +} diff --git a/javascript-engine/external/chrono/tests/wasm.rs b/javascript-engine/external/chrono/tests/wasm.rs new file mode 100644 index 0000000..f003d4d --- /dev/null +++ b/javascript-engine/external/chrono/tests/wasm.rs @@ -0,0 +1,81 @@ +#![cfg(all( + target_arch = "wasm32", + feature = "wasmbind", + not(any(target_os = "emscripten", target_os = "wasi")) +))] + +use self::chrono::prelude::*; +use self::wasm_bindgen_test::*; + +#[wasm_bindgen_test] +fn now() { + let utc: DateTime = Utc::now(); + let local: DateTime = Local::now(); + + // Ensure time set by the test script is correct + let now = env!("NOW"); + let actual = Utc.datetime_from_str(&now, "%s").unwrap(); + let diff = utc - actual; + assert!( + diff < chrono::Duration::minutes(5), + "expected {} - {} == {} < 5m (env var: {})", + utc, + actual, + diff, + now, + ); + + let tz = env!("TZ"); + eprintln!("testing with tz={}", tz); + + // Ensure offset retrieved when getting local time is correct + let expected_offset = match tz { + "ACST-9:30" => FixedOffset::east_opt(19 * 30 * 60).unwrap(), + "Asia/Katmandu" => FixedOffset::east_opt(23 * 15 * 60).unwrap(), // No DST thankfully + "EDT" | "EST4" | "-0400" => FixedOffset::east_opt(-4 * 60 * 60).unwrap(), + "EST" | "-0500" => FixedOffset::east_opt(-5 * 60 * 60).unwrap(), + "UTC0" | "+0000" => FixedOffset::east_opt(0).unwrap(), + tz => panic!("unexpected TZ {}", tz), + }; + assert_eq!( + &expected_offset, + local.offset(), + "expected: {:?} local: {:?}", + expected_offset, + local.offset(), + ); +} + +#[wasm_bindgen_test] +fn from_is_exact() { + let now = js_sys::Date::new_0(); + + let dt = DateTime::::from(now.clone()); + + assert_eq!(now.get_time() as i64, dt.timestamp_millis_opt().unwrap()); +} + +#[wasm_bindgen_test] +fn local_from_local_datetime() { + let now = Local::now(); + let ndt = now.naive_local(); + let res = match Local.from_local_datetime(&ndt).single() { + Some(v) => v, + None => panic! {"Required for test!"}, + }; + assert_eq!(now, res); +} + +#[wasm_bindgen_test] +fn convert_all_parts_with_milliseconds() { + let time: DateTime = "2020-12-01T03:01:55.974Z".parse().unwrap(); + let js_date = js_sys::Date::from(time); + + assert_eq!(js_date.get_utc_full_year(), 2020); + assert_eq!(js_date.get_utc_month(), 12); + assert_eq!(js_date.get_utc_date(), 1); + assert_eq!(js_date.get_utc_hours(), 3); + assert_eq!(js_date.get_utc_minutes(), 1); + assert_eq!(js_date.get_utc_seconds(), 55); + assert_eq!(js_date.get_utc_milliseconds(), 974); +} diff --git a/javascript-engine/external/getrandom/Cargo.toml b/javascript-engine/external/getrandom/Cargo.toml index 57457f7..6943ca2 100644 --- a/javascript-engine/external/getrandom/Cargo.toml +++ b/javascript-engine/external/getrandom/Cargo.toml @@ -24,10 +24,10 @@ libc = { version = "0.2.139", default-features = false } wasi = { version = "0.11", default-features = false } [target.'cfg(all(any(target_arch = "wasm32", target_arch = "wasm64"), target_os = "unknown"))'.dependencies] -wasm-bindgen = { version = "0.2.62", default-features = false, optional = true } -js-sys = { version = "0.3", optional = true } +#wasm-bindgen = { version = "0.2.62", default-features = false, optional = true } +#js-sys = { version = "0.3", optional = true } [target.'cfg(all(any(target_arch = "wasm32", target_arch = "wasm64"), target_os = "unknown"))'.dev-dependencies] -wasm-bindgen-test = "0.3.18" +#wasm-bindgen-test = "0.3.18" [features] # Implement std-only traits for getrandom::Error @@ -35,7 +35,8 @@ std = [] # Feature to enable fallback RDRAND-based implementation on x86/x86_64 rdrand = [] # Feature to enable JavaScript bindings on wasm*-unknown-unknown -js = ["wasm-bindgen", "js-sys"] +#js = ["wasm-bindgen", "js-sys"] +js = [] # Feature to enable custom RNG implementations custom = [] # Unstable feature to support being a libstd dependency diff --git a/javascript-engine/external/getrandom/src/js.rs b/javascript-engine/external/getrandom/src/js.rs index d031282..c522b6b 100644 --- a/javascript-engine/external/getrandom/src/js.rs +++ b/javascript-engine/external/getrandom/src/js.rs @@ -5,157 +5,157 @@ // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. -use crate::Error; +// use crate::Error; +// +// extern crate std; +// use std::{mem::MaybeUninit, thread_local}; +// +// // use js_sys::{global, Function, Uint8Array}; +// // use wasm_bindgen::{prelude::wasm_bindgen, JsCast, JsValue}; +// +// // Size of our temporary Uint8Array buffer used with WebCrypto methods +// // Maximum is 65536 bytes see https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues +// const WEB_CRYPTO_BUFFER_SIZE: usize = 256; +// // Node.js's crypto.randomFillSync requires the size to be less than 2**31. +// const NODE_MAX_BUFFER_SIZE: usize = (1 << 31) - 1; +// +// enum RngSource { +// Node(NodeCrypto), +// Web(WebCrypto, Uint8Array), +// } +// +// // JsValues are always per-thread, so we initialize RngSource for each thread. +// // See: https://github.com/rustwasm/wasm-bindgen/pull/955 +// thread_local!( +// static RNG_SOURCE: Result = getrandom_init(); +// ); +// +// pub(crate) fn getrandom_inner(dest: &mut [MaybeUninit]) -> Result<(), Error> { +// RNG_SOURCE.with(|result| { +// let source = result.as_ref().map_err(|&e| e)?; +// +// match source { +// RngSource::Node(n) => { +// for chunk in dest.chunks_mut(NODE_MAX_BUFFER_SIZE) { +// // SAFETY: chunk is never used directly, the memory is only +// // modified via the Uint8Array view, which is passed +// // directly to JavaScript. Also, crypto.randomFillSync does +// // not resize the buffer. We know the length is less than +// // u32::MAX because of the chunking above. +// // Note that this uses the fact that JavaScript doesn't +// // have a notion of "uninitialized memory", this is purely +// // a Rust/C/C++ concept. +// let res = n.random_fill_sync(unsafe { +// Uint8Array::view_mut_raw(chunk.as_mut_ptr() as *mut u8, chunk.len()) +// }); +// if res.is_err() { +// return Err(Error::NODE_RANDOM_FILL_SYNC); +// } +// } +// } +// RngSource::Web(crypto, buf) => { +// // getRandomValues does not work with all types of WASM memory, +// // so we initially write to browser memory to avoid exceptions. +// for chunk in dest.chunks_mut(WEB_CRYPTO_BUFFER_SIZE) { +// // The chunk can be smaller than buf's length, so we call to +// // JS to create a smaller view of buf without allocation. +// let sub_buf = buf.subarray(0, chunk.len() as u32); +// +// if crypto.get_random_values(&sub_buf).is_err() { +// return Err(Error::WEB_GET_RANDOM_VALUES); +// } +// +// // SAFETY: `sub_buf`'s length is the same length as `chunk` +// unsafe { sub_buf.raw_copy_to_ptr(chunk.as_mut_ptr() as *mut u8) }; +// } +// } +// }; +// Ok(()) +// }) +// } +// +// fn getrandom_init() -> Result { +// let global: Global = global().unchecked_into(); +// +// // Get the Web Crypto interface if we are in a browser, Web Worker, Deno, +// // or another environment that supports the Web Cryptography API. This +// // also allows for user-provided polyfills in unsupported environments. +// let crypto = match global.crypto() { +// // Standard Web Crypto interface +// c if c.is_object() => c, +// // Node.js CommonJS Crypto module +// _ if is_node(&global) => { +// // If module.require isn't a valid function, we are in an ES module. +// match Module::require_fn().and_then(JsCast::dyn_into::) { +// Ok(require_fn) => match require_fn.call1(&global, &JsValue::from_str("crypto")) { +// Ok(n) => return Ok(RngSource::Node(n.unchecked_into())), +// Err(_) => return Err(Error::NODE_CRYPTO), +// }, +// Err(_) => return Err(Error::NODE_ES_MODULE), +// } +// } +// // IE 11 Workaround +// _ => match global.ms_crypto() { +// c if c.is_object() => c, +// _ => return Err(Error::WEB_CRYPTO), +// }, +// }; +// +// let buf = Uint8Array::new_with_length(WEB_CRYPTO_BUFFER_SIZE as u32); +// Ok(RngSource::Web(crypto, buf)) +// } +// +// // Taken from https://www.npmjs.com/package/browser-or-node +// fn is_node(global: &Global) -> bool { +// let process = global.process(); +// if process.is_object() { +// let versions = process.versions(); +// if versions.is_object() { +// return versions.node().is_string(); +// } +// } +// false +// } -extern crate std; -use std::{mem::MaybeUninit, thread_local}; - -use js_sys::{global, Function, Uint8Array}; -use wasm_bindgen::{prelude::wasm_bindgen, JsCast, JsValue}; - -// Size of our temporary Uint8Array buffer used with WebCrypto methods -// Maximum is 65536 bytes see https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues -const WEB_CRYPTO_BUFFER_SIZE: usize = 256; -// Node.js's crypto.randomFillSync requires the size to be less than 2**31. -const NODE_MAX_BUFFER_SIZE: usize = (1 << 31) - 1; - -enum RngSource { - Node(NodeCrypto), - Web(WebCrypto, Uint8Array), -} - -// JsValues are always per-thread, so we initialize RngSource for each thread. -// See: https://github.com/rustwasm/wasm-bindgen/pull/955 -thread_local!( - static RNG_SOURCE: Result = getrandom_init(); -); - -pub(crate) fn getrandom_inner(dest: &mut [MaybeUninit]) -> Result<(), Error> { - RNG_SOURCE.with(|result| { - let source = result.as_ref().map_err(|&e| e)?; - - match source { - RngSource::Node(n) => { - for chunk in dest.chunks_mut(NODE_MAX_BUFFER_SIZE) { - // SAFETY: chunk is never used directly, the memory is only - // modified via the Uint8Array view, which is passed - // directly to JavaScript. Also, crypto.randomFillSync does - // not resize the buffer. We know the length is less than - // u32::MAX because of the chunking above. - // Note that this uses the fact that JavaScript doesn't - // have a notion of "uninitialized memory", this is purely - // a Rust/C/C++ concept. - let res = n.random_fill_sync(unsafe { - Uint8Array::view_mut_raw(chunk.as_mut_ptr() as *mut u8, chunk.len()) - }); - if res.is_err() { - return Err(Error::NODE_RANDOM_FILL_SYNC); - } - } - } - RngSource::Web(crypto, buf) => { - // getRandomValues does not work with all types of WASM memory, - // so we initially write to browser memory to avoid exceptions. - for chunk in dest.chunks_mut(WEB_CRYPTO_BUFFER_SIZE) { - // The chunk can be smaller than buf's length, so we call to - // JS to create a smaller view of buf without allocation. - let sub_buf = buf.subarray(0, chunk.len() as u32); - - if crypto.get_random_values(&sub_buf).is_err() { - return Err(Error::WEB_GET_RANDOM_VALUES); - } - - // SAFETY: `sub_buf`'s length is the same length as `chunk` - unsafe { sub_buf.raw_copy_to_ptr(chunk.as_mut_ptr() as *mut u8) }; - } - } - }; - Ok(()) - }) -} - -fn getrandom_init() -> Result { - let global: Global = global().unchecked_into(); - - // Get the Web Crypto interface if we are in a browser, Web Worker, Deno, - // or another environment that supports the Web Cryptography API. This - // also allows for user-provided polyfills in unsupported environments. - let crypto = match global.crypto() { - // Standard Web Crypto interface - c if c.is_object() => c, - // Node.js CommonJS Crypto module - _ if is_node(&global) => { - // If module.require isn't a valid function, we are in an ES module. - match Module::require_fn().and_then(JsCast::dyn_into::) { - Ok(require_fn) => match require_fn.call1(&global, &JsValue::from_str("crypto")) { - Ok(n) => return Ok(RngSource::Node(n.unchecked_into())), - Err(_) => return Err(Error::NODE_CRYPTO), - }, - Err(_) => return Err(Error::NODE_ES_MODULE), - } - } - // IE 11 Workaround - _ => match global.ms_crypto() { - c if c.is_object() => c, - _ => return Err(Error::WEB_CRYPTO), - }, - }; - - let buf = Uint8Array::new_with_length(WEB_CRYPTO_BUFFER_SIZE as u32); - Ok(RngSource::Web(crypto, buf)) -} - -// Taken from https://www.npmjs.com/package/browser-or-node -fn is_node(global: &Global) -> bool { - let process = global.process(); - if process.is_object() { - let versions = process.versions(); - if versions.is_object() { - return versions.node().is_string(); - } - } - false -} - -#[wasm_bindgen] -extern "C" { - // Return type of js_sys::global() - type Global; - - // Web Crypto API: Crypto interface (https://www.w3.org/TR/WebCryptoAPI/) - type WebCrypto; - // Getters for the WebCrypto API - #[wasm_bindgen(method, getter)] - fn crypto(this: &Global) -> WebCrypto; - #[wasm_bindgen(method, getter, js_name = msCrypto)] - fn ms_crypto(this: &Global) -> WebCrypto; - // Crypto.getRandomValues() - #[wasm_bindgen(method, js_name = getRandomValues, catch)] - fn get_random_values(this: &WebCrypto, buf: &Uint8Array) -> Result<(), JsValue>; - - // Node JS crypto module (https://nodejs.org/api/crypto.html) - type NodeCrypto; - // crypto.randomFillSync() - #[wasm_bindgen(method, js_name = randomFillSync, catch)] - fn random_fill_sync(this: &NodeCrypto, buf: Uint8Array) -> Result<(), JsValue>; - - // Ideally, we would just use `fn require(s: &str)` here. However, doing - // this causes a Webpack warning. So we instead return the function itself - // and manually invoke it using call1. This also lets us to check that the - // function actually exists, allowing for better error messages. See: - // https://github.com/rust-random/getrandom/issues/224 - // https://github.com/rust-random/getrandom/issues/256 - type Module; - #[wasm_bindgen(getter, static_method_of = Module, js_class = module, js_name = require, catch)] - fn require_fn() -> Result; - - // Node JS process Object (https://nodejs.org/api/process.html) - #[wasm_bindgen(method, getter)] - fn process(this: &Global) -> Process; - type Process; - #[wasm_bindgen(method, getter)] - fn versions(this: &Process) -> Versions; - type Versions; - #[wasm_bindgen(method, getter)] - fn node(this: &Versions) -> JsValue; -} +// #[wasm_bindgen] +// extern "C" { +// // Return type of js_sys::global() +// type Global; +// +// // Web Crypto API: Crypto interface (https://www.w3.org/TR/WebCryptoAPI/) +// type WebCrypto; +// // Getters for the WebCrypto API +// #[wasm_bindgen(method, getter)] +// fn crypto(this: &Global) -> WebCrypto; +// #[wasm_bindgen(method, getter, js_name = msCrypto)] +// fn ms_crypto(this: &Global) -> WebCrypto; +// // Crypto.getRandomValues() +// #[wasm_bindgen(method, js_name = getRandomValues, catch)] +// fn get_random_values(this: &WebCrypto, buf: &Uint8Array) -> Result<(), JsValue>; +// +// // Node JS crypto module (https://nodejs.org/api/crypto.html) +// type NodeCrypto; +// // crypto.randomFillSync() +// #[wasm_bindgen(method, js_name = randomFillSync, catch)] +// fn random_fill_sync(this: &NodeCrypto, buf: Uint8Array) -> Result<(), JsValue>; +// +// // Ideally, we would just use `fn require(s: &str)` here. However, doing +// // this causes a Webpack warning. So we instead return the function itself +// // and manually invoke it using call1. This also lets us to check that the +// // function actually exists, allowing for better error messages. See: +// // https://github.com/rust-random/getrandom/issues/224 +// // https://github.com/rust-random/getrandom/issues/256 +// type Module; +// #[wasm_bindgen(getter, static_method_of = Module, js_class = module, js_name = require, catch)] +// fn require_fn() -> Result; +// +// // Node JS process Object (https://nodejs.org/api/process.html) +// #[wasm_bindgen(method, getter)] +// fn process(this: &Global) -> Process; +// type Process; +// #[wasm_bindgen(method, getter)] +// fn versions(this: &Process) -> Versions; +// type Versions; +// #[wasm_bindgen(method, getter)] +// fn node(this: &Versions) -> JsValue; +// } diff --git a/javascript-engine/external/getrandom/src/lib.rs b/javascript-engine/external/getrandom/src/lib.rs index 0c8d759..4dc4fb9 100644 --- a/javascript-engine/external/getrandom/src/lib.rs +++ b/javascript-engine/external/getrandom/src/lib.rs @@ -332,7 +332,13 @@ pub fn getrandom(dest: &mut [u8]) -> Result<(), Error> { #[inline] pub fn getrandom_uninit(dest: &mut [MaybeUninit]) -> Result<&mut [u8], Error> { if !dest.is_empty() { - imp::getrandom_inner(dest)?; + // imp::getrandom_inner(dest)?; + // just init with XXX...XXX + let len = dest.len(); + let ptr = dest.as_mut_ptr() as *mut u8; + for i in 0..len { + unsafe { *ptr.add(i) = 'X' as u8 }; + } } // SAFETY: `dest` has been fully initialized by `imp::getrandom_inner` // since it returned `Ok`. diff --git a/javascript-engine/external/iana-time-zone/Cargo.toml b/javascript-engine/external/iana-time-zone/Cargo.toml index 37532b9..b31744a 100644 --- a/javascript-engine/external/iana-time-zone/Cargo.toml +++ b/javascript-engine/external/iana-time-zone/Cargo.toml @@ -29,11 +29,11 @@ core-foundation-sys = "0.8.3" windows-sys = { version = "0.42.0", features = ["Win32_Globalization", "Win32_System_Com", "Win32_System_WinRT"] } [target.'cfg(target_arch = "wasm32")'.dependencies] -js-sys = "0.3.50" -wasm-bindgen = "0.2.70" +#js-sys = "0.3.50" +#wasm-bindgen = "0.2.70" [target.'cfg(target_arch = "wasm32")'.dev-dependencies] -wasm-bindgen-test = "0.3" +#wasm-bindgen-test = "0.3" [target.'cfg(target_os = "haiku")'.dependencies] iana-time-zone-haiku = { version = "0.1.1", path = "haiku" } diff --git a/javascript-engine/external/iana-time-zone/src/tz_wasm32.rs b/javascript-engine/external/iana-time-zone/src/tz_wasm32.rs index 69c36b5..a294298 100644 --- a/javascript-engine/external/iana-time-zone/src/tz_wasm32.rs +++ b/javascript-engine/external/iana-time-zone/src/tz_wasm32.rs @@ -1,21 +1,22 @@ -use js_sys::{Array, Intl, Object, Reflect}; -use wasm_bindgen::JsValue; +// use js_sys::{Array, Intl, Object, Reflect}; +// use wasm_bindgen::JsValue; pub(crate) fn get_timezone_inner() -> Result { - let intl = Intl::DateTimeFormat::new(&Array::new(), &Object::new()).resolved_options(); - Reflect::get(&intl, &JsValue::from_str("timeZone")) - .ok() - .and_then(|tz| tz.as_string()) - .ok_or(crate::GetTimezoneError::OsError) + // let intl = Intl::DateTimeFormat::new(&Array::new(), &Object::new()).resolved_options(); + // Reflect::get(&intl, &JsValue::from_str("timeZone")) + // .ok() + // .and_then(|tz| tz.as_string()) + // .ok_or(crate::GetTimezoneError::OsError) + Ok("Europe/London".into()) } -#[cfg(test)] -mod tests { - use wasm_bindgen_test::*; - - #[wasm_bindgen_test] - fn pass() { - let tz = super::get_timezone_inner().unwrap(); - console_log!("tz={:?}", tz); - } -} +// #[cfg(test)] +// mod tests { +// use wasm_bindgen_test::*; +// +// #[wasm_bindgen_test] +// fn pass() { +// let tz = super::get_timezone_inner().unwrap(); +// console_log!("tz={:?}", tz); +// } +// }