feat: add opt_result

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rust_util"
-version = "0.6.31"
+version = "0.6.32"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 description = "Hatter's Rust Util"

examples/log.rs

@@ -1,6 +1,6 @@
 #[macro_use] extern crate rust_util;
 
-use rust_util::XResult;
+use rust_util::{XResult, SimpleError};
 
 // cargo run --example log
 fn main() -> XResult<()> {
@@ -18,5 +18,12 @@ error or ^"##);
     warning!("Hello {}", "world!");
     failure!("Hello {}", "world!");
 
+    println!("{:?}", test_opt_result());
+
     simple_error!("helloworld {}", 1)
-}
+}
+
+fn test_opt_result() -> XResult<()> {
+    let a = Err(SimpleError::new("test".into()));
+    opt_result!(a, "error: {}")
+}

src/lib.rs

@@ -41,7 +41,7 @@ pub mod util_tlv;
     ($($arg:tt)+) => ( rust_util::util_msg::print_debug(&format!($($arg)+)); )
 }
 #[macro_export] macro_rules! opt_value {
-    ($e: expr) => ( match $e { Some(o) => o, None => return, } )
+    ($ex: expr) => ( match $ex { Some(o) => o, None => return, } )
 }
 
 pub type XResult<T> = Result<T, Box<dyn Error>>;
@@ -54,8 +54,20 @@ pub fn new_box_ioerror(m: &str) -> Box<dyn Error> {
     Box::new(IoError::new(ErrorKind::Other, m))
 }
 
+#[macro_export] macro_rules! opt_result {
+    ($ex: expr, $($arg:tt)+) => (
+        match $ex {
+            Ok(o) => o,
+            Err(e) => return Err(rust_util::SimpleError::new(
+                format!("{}, file: {}, line: {}", format!($($arg)+, e), file!(), line!())
+            ).into()),
+        }
+    )
+}
 #[macro_export] macro_rules! simple_error {
-    ($($arg:tt)+) => ( Err(rust_util::SimpleError::new(format!($($arg)+)).into()) )
+    ($($arg:tt)+) => ( Err(rust_util::SimpleError::new(
+        format!("{}, file: {}, line: {}", format!($($arg)+), file!(), line!())
+    ).into()) )
 }
 
 #[derive(Debug)]