feat: add simple_error

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rust_util"
-version = "0.6.24"
+version = "0.6.25"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 description = "Hatter's Rust Util"

examples/log.rs

@@ -1,7 +1,9 @@
 #[macro_use] extern crate rust_util;
 
+use rust_util::XResult;
+
 // cargo run --example log
-fn main() {
+fn main() -> XResult<()> {
     std::env::set_var("LOGGER_LEVEL", "*");
     println!(r##"env LOGGER_LEVEL set to:
 debug or *
@@ -15,4 +17,6 @@ error or ^"##);
     success!("Hello {}", "world!");
     warning!("Hello {}", "world!");
     failure!("Hello {}", "world!");
+
+    simple_error!("helloworld {}", 1)
 }

justfile

@@ -1,9 +1,12 @@
-# help
-aa:
+_:
   @just --list
 
 # example log
 log:
   cargo run --example log
 
+# publish
+publish:
+  cargo publish
+
 

src/lib.rs

@@ -2,7 +2,12 @@
 extern crate lazy_static;
 extern crate term;
 
-use std::io::{ Error, ErrorKind };
+use std::error::Error;
+use std::io::Error as IoError;
+use std::io::ErrorKind;
+use std::fmt::Display;
+use std::fmt::Formatter;
+use std::fmt::Result as FmtResult;
 
 pub mod util_io;
 pub mod util_os;
@@ -40,12 +45,44 @@ pub mod util_git;
     ($e: expr) => ( match $e { Some(o) => o, None => return, } )
 }
 
-pub type XResult<T> = Result<T, Box<dyn std::error::Error>>;
+pub type XResult<T> = Result<T, Box<dyn Error>>;
 
-pub fn new_box_error(m: &str) -> Box<dyn std::error::Error> {
-    Box::new(Error::new(ErrorKind::Other, m))
+pub fn new_box_error(m: &str) -> Box<dyn Error> {
+    Box::new(IoError::new(ErrorKind::Other, m))
 }
 
-pub fn new_box_ioerror(m: &str) -> Box<dyn std::error::Error> {
-    Box::new(Error::new(ErrorKind::Other, m))
+pub fn new_box_ioerror(m: &str) -> Box<dyn Error> {
+    Box::new(IoError::new(ErrorKind::Other, m))
 }
+
+#[macro_export] macro_rules! simple_error {
+    ($($arg:tt)+) => ( Err(rust_util::SimpleError::new(format!($($arg)+)).into()) )
+}
+
+#[derive(Debug)]
+pub struct SimpleError {
+    pub message: String,
+    pub source: Option<Box<dyn Error>>,
+}
+
+impl SimpleError {
+    pub fn new(message: String) -> Self {
+        Self { message, source: None }
+    }
+
+    pub fn new2(message: String, source: Box<dyn Error>) -> Self {
+        Self { message, source: Some(source) }
+    }
+}
+
+impl Display for SimpleError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
+        match &self.source {
+            None => write!(f, "SimpleErorr, message: {}", self.message),
+            Some(e) => write!(f, "SimpleErorr, message: {}, source erorr: {}", self.message, e),
+        }
+    }
+}
+
+impl Error for SimpleError {}
+