From e2d6b9c54f0b00c39c9e2bbafa87ad129e766f36 Mon Sep 17 00:00:00 2001
From: Hatter Jiang <jht5945@gmail.com>
Date: Fri, 8 Jul 2022 00:36:47 +0800
Subject: [PATCH] feat: add deno_rust_wasm_import_functions

---
 .../.gitignore                                |   1 +
 .../.rustfmt.toml                             |   3 +
 .../Cargo.lock                                | 126 +++++++++++++++
 .../Cargo.toml                                |   4 +
 .../deno_rust_wasm_import_functions/deno.json |   5 +
 .../deno_rust_wasm_import_functions/justfile  |   9 ++
 .../lib/rs_lib.generated.js                   | 148 ++++++++++++++++++
 .../lib/rs_lib_bg.wasm                        | Bin 0 -> 16535 bytes
 .../deno_rust_wasm_import_functions/main.js   |   8 +
 .../rs_lib/Cargo.toml                         |  16 ++
 .../rs_lib/src/lib.rs                         |  12 ++
 11 files changed, 332 insertions(+)
 create mode 100644 __wasm/deno_rust_wasm_import_functions/.gitignore
 create mode 100644 __wasm/deno_rust_wasm_import_functions/.rustfmt.toml
 create mode 100644 __wasm/deno_rust_wasm_import_functions/Cargo.lock
 create mode 100644 __wasm/deno_rust_wasm_import_functions/Cargo.toml
 create mode 100644 __wasm/deno_rust_wasm_import_functions/deno.json
 create mode 100644 __wasm/deno_rust_wasm_import_functions/justfile
 create mode 100644 __wasm/deno_rust_wasm_import_functions/lib/rs_lib.generated.js
 create mode 100644 __wasm/deno_rust_wasm_import_functions/lib/rs_lib_bg.wasm
 create mode 100644 __wasm/deno_rust_wasm_import_functions/main.js
 create mode 100644 __wasm/deno_rust_wasm_import_functions/rs_lib/Cargo.toml
 create mode 100644 __wasm/deno_rust_wasm_import_functions/rs_lib/src/lib.rs

diff --git a/__wasm/deno_rust_wasm_import_functions/.gitignore b/__wasm/deno_rust_wasm_import_functions/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/__wasm/deno_rust_wasm_import_functions/.rustfmt.toml b/__wasm/deno_rust_wasm_import_functions/.rustfmt.toml
new file mode 100644
index 0000000..9bb8d9d
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/.rustfmt.toml
@@ -0,0 +1,3 @@
+max_width = 80
+tab_spaces = 2
+edition = "2021"
diff --git a/__wasm/deno_rust_wasm_import_functions/Cargo.lock b/__wasm/deno_rust_wasm_import_functions/Cargo.lock
new file mode 100644
index 0000000..1e925d7
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/Cargo.lock
@@ -0,0 +1,126 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "bumpalo"
+version = "3.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37ccbd214614c6783386c1af30caf03192f17891059cecc394b4fb119e363de3"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "log"
+version = "0.4.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd96a1e8ed2596c337f8eae5f24924ec83f5ad5ab21ea8e455d3566c69fbcaf7"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3bcdf212e9776fbcb2d23ab029360416bb1706b1aea2d1a5ba002727cbcab804"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "rs_lib"
+version = "0.0.0"
+dependencies = [
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.98"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c50aef8a904de4c23c788f104b7dddc7d6f79c647c7c8ce4cc8f73eb0ca773dd"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5bd2fe26506023ed7b5e1e315add59d6f584c621d037f9368fea9cfb988f368c"
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.81"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c53b543413a17a202f4be280a7e5c62a1c69345f5de525ee64f8cfdbc954994"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.81"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5491a68ab4500fa6b4d726bd67408630c3dbe9c4fe7bda16d5c82a1fd8c7340a"
+dependencies = [
+ "bumpalo",
+ "lazy_static",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.81"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c441e177922bc58f1e12c022624b6216378e5febc2f0533e41ba443d505b80aa"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.81"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d94ac45fcf608c1f45ef53e748d35660f168490c10b23704c7779ab8f5c3048"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.81"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a89911bd99e5f3659ec4acf9c4d93b0a90fe4a2a11f15328472058edc5261be"
diff --git a/__wasm/deno_rust_wasm_import_functions/Cargo.toml b/__wasm/deno_rust_wasm_import_functions/Cargo.toml
new file mode 100644
index 0000000..3c579d8
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/Cargo.toml
@@ -0,0 +1,4 @@
+[workspace]
+members = [
+  "rs_lib",
+]
diff --git a/__wasm/deno_rust_wasm_import_functions/deno.json b/__wasm/deno_rust_wasm_import_functions/deno.json
new file mode 100644
index 0000000..ea91683
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/deno.json
@@ -0,0 +1,5 @@
+{
+  "tasks": {
+    "wasmbuild": "deno run -A https://deno.land/x/wasmbuild@0.8.2/main.ts"
+  }
+}
diff --git a/__wasm/deno_rust_wasm_import_functions/justfile b/__wasm/deno_rust_wasm_import_functions/justfile
new file mode 100644
index 0000000..2c77c71
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/justfile
@@ -0,0 +1,9 @@
+_:
+  @just --list
+
+build_wasm:
+   deno task wasmbuild
+
+run *ARGS:
+  deno run --allow-read main.js {{ ARGS }}
+
diff --git a/__wasm/deno_rust_wasm_import_functions/lib/rs_lib.generated.js b/__wasm/deno_rust_wasm_import_functions/lib/rs_lib.generated.js
new file mode 100644
index 0000000..5167395
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/lib/rs_lib.generated.js
@@ -0,0 +1,148 @@
+// @generated file from wasmbuild -- do not edit
+// deno-lint-ignore-file
+// deno-fmt-ignore-file
+// source-hash: 509bffc30c487fb405bbe67e9580cb31f09f9858
+let wasm;
+let cachedInt32Memory0;
+
+const cachedTextDecoder = new TextDecoder("utf-8", {
+  ignoreBOM: true,
+  fatal: true,
+});
+
+cachedTextDecoder.decode();
+
+let cachedUint8Memory0;
+function getUint8Memory0() {
+  if (cachedUint8Memory0.byteLength === 0) {
+    cachedUint8Memory0 = new Uint8Array(wasm.memory.buffer);
+  }
+  return cachedUint8Memory0;
+}
+
+function getStringFromWasm0(ptr, len) {
+  return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
+}
+/**
+ * @param {number} a
+ * @param {number} b
+ */
+export function alert_sum(a, b) {
+  wasm.alert_sum(a, b);
+}
+
+const imports = {
+  __wbindgen_placeholder__: {
+    __wbg_alert_1d2369aa1e130bee: function (arg0, arg1) {
+      alert(getStringFromWasm0(arg0, arg1));
+    },
+  },
+};
+
+const wasm_url = new URL("rs_lib_bg.wasm", import.meta.url);
+
+/**
+ * Decompression callback
+ *
+ * @callback decompressCallback
+ * @param {Uint8Array} compressed
+ * @return {Uint8Array} decompressed
+ */
+
+/** Instantiates an instance of the Wasm module returning its functions.
+ * @remarks It is safe to call this multiple times and once successfully
+ * loaded it will always return a reference to the same object.
+ * @param {decompressCallback=} transform
+ */
+export async function instantiate(transform) {
+  return (await instantiateWithInstance(transform)).exports;
+}
+
+let instanceWithExports;
+let lastLoadPromise;
+
+/** Instantiates an instance of the Wasm module along with its exports.
+ * @remarks It is safe to call this multiple times and once successfully
+ * loaded it will always return a reference to the same object.
+ * @param {decompressCallback=} transform
+ * @returns {Promise<{
+ *   instance: WebAssembly.Instance;
+ *   exports: { alert_sum: typeof alert_sum }
+ * }>}
+ */
+export function instantiateWithInstance(transform) {
+  if (instanceWithExports != null) {
+    return Promise.resolve(instanceWithExports);
+  }
+  if (lastLoadPromise == null) {
+    lastLoadPromise = (async () => {
+      try {
+        const instance = (await instantiateModule(transform)).instance;
+        wasm = instance.exports;
+        cachedInt32Memory0 = new Int32Array(wasm.memory.buffer);
+        cachedUint8Memory0 = new Uint8Array(wasm.memory.buffer);
+        instanceWithExports = {
+          instance,
+          exports: getWasmInstanceExports(),
+        };
+        return instanceWithExports;
+      } finally {
+        lastLoadPromise = null;
+      }
+    })();
+  }
+  return lastLoadPromise;
+}
+
+function getWasmInstanceExports() {
+  return { alert_sum };
+}
+
+/** Gets if the Wasm module has been instantiated. */
+export function isInstantiated() {
+  return instanceWithExports != null;
+}
+
+async function instantiateModule(transform) {
+  switch (wasm_url.protocol) {
+    case "file:": {
+      if (typeof Deno !== "object") {
+        throw new Error("file urls are not supported in this environment");
+      }
+
+      if ("permissions" in Deno) {
+        Deno.permissions.request({ name: "read", path: wasm_url });
+      }
+      const wasmCode = await Deno.readFile(wasm_url);
+      return WebAssembly.instantiate(
+        !transform ? wasmCode : transform(wasmCode),
+        imports,
+      );
+    }
+    case "https:":
+    case "http:": {
+      if (typeof Deno === "object" && "permissions" in Deno) {
+        Deno.permissions.request({ name: "net", host: wasm_url.host });
+      }
+      const wasmResponse = await fetch(wasm_url);
+      if (transform) {
+        const wasmCode = new Uint8Array(await wasmResponse.arrayBuffer());
+        return WebAssembly.instantiate(transform(wasmCode), imports);
+      }
+      if (
+        wasmResponse.headers.get("content-type")?.toLowerCase().startsWith(
+          "application/wasm",
+        )
+      ) {
+        return WebAssembly.instantiateStreaming(wasmResponse, imports);
+      } else {
+        return WebAssembly.instantiate(
+          await wasmResponse.arrayBuffer(),
+          imports,
+        );
+      }
+    }
+    default:
+      throw new Error(`Unsupported protocol: ${wasm_url.protocol}`);
+  }
+}
diff --git a/__wasm/deno_rust_wasm_import_functions/lib/rs_lib_bg.wasm b/__wasm/deno_rust_wasm_import_functions/lib/rs_lib_bg.wasm
new file mode 100644
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literal 0
HcmV?d00001

diff --git a/__wasm/deno_rust_wasm_import_functions/main.js b/__wasm/deno_rust_wasm_import_functions/main.js
new file mode 100644
index 0000000..bef5642
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/main.js
@@ -0,0 +1,8 @@
+import { instantiate } from "./lib/rs_lib.generated.js";
+const { alert_sum } = await instantiate();
+
+async function main() {
+    alert_sum(100, 200);
+}
+
+await main();
diff --git a/__wasm/deno_rust_wasm_import_functions/rs_lib/Cargo.toml b/__wasm/deno_rust_wasm_import_functions/rs_lib/Cargo.toml
new file mode 100644
index 0000000..128f45f
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/rs_lib/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "rs_lib"
+version = "0.0.0"
+edition = "2021"
+
+[lib]
+crate_type = ["cdylib"]
+
+[profile.release]
+codegen-units = 1
+incremental = true
+lto = true
+opt-level = "z"
+
+[dependencies]
+wasm-bindgen = "=0.2.81"
diff --git a/__wasm/deno_rust_wasm_import_functions/rs_lib/src/lib.rs b/__wasm/deno_rust_wasm_import_functions/rs_lib/src/lib.rs
new file mode 100644
index 0000000..6f2d9e3
--- /dev/null
+++ b/__wasm/deno_rust_wasm_import_functions/rs_lib/src/lib.rs
@@ -0,0 +1,12 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern {
+    fn alert(s: &str);
+}
+
+#[wasm_bindgen]
+pub fn alert_sum(a: i32, b: i32) {
+    alert(&format!("{} plus {} is {}", a, b, a + b));
+}
+