feat: add opt_value_result!

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rust_util"
-version = "0.6.39"
+version = "0.6.40"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 description = "Hatter's Rust Util"

demo/test_clap/src/main.rs

@@ -13,6 +13,12 @@ impl Command for TestCommand {
 
     fn run(&self, _arg_matches: &ArgMatches, _: &ArgMatches) -> CommandError {
         println!("hello test!");
+        let a: Option<String> = None;
+        let b = move || -> rust_util::XResult<String> {
+            Ok(rust_util::opt_value_result!(a, "test: {}", 1))
+        };
+        let c = b();
+        println!("{:?}", c);
         Ok(None)
     }
 }

src/lib.rs

@@ -66,6 +66,17 @@ pub fn new_box_ioerror(m: &str) -> Box<dyn Error> {
     Box::new(IoError::new(ErrorKind::Other, m))
 }
 
+#[macro_export] macro_rules! opt_value_result {
+    ($ex: expr, $($arg:tt)+) => (
+        match $ex {
+            Some(o) => o,
+            None => return Err(rust_util::SimpleError::new(
+                format!("{}, file: {}, line: {}", format!($($arg)+), file!(), line!())
+            ).into()),
+        }
+    )
+}
+
 #[macro_export] macro_rules! opt_result {
     ($ex: expr, $($arg:tt)+) => (
         match $ex {