debug-try

This crate contains an attribute macro that can help you debug errors in your program.

In a function marked with the #[debug_try] attribute, any errors propagated with the ? operator inside that function will be logged, printing the file, line and column to standard output.

If nested = true is set in the attribute, then the same will apply to functions and closures defined inside the marked function as well.

Note. This crate requires the proc_macro_diagnostic and proc_macro_span features, so only Rust nightly is supported.

Example

```rust // myfunc.rs use std::{error, fs, io, path}; use debugtry::debug_try;

[debug_try(nested = true)]

fn myfunc() -> Result<(), Box> { fn filesize>(file: P) -> Result { let data = fs::read(file)?; Ok(data.len()) }

println!("file size = {}", file_size("non_existing_file.txt")?);
Ok(())

} ```

When invoked, the following will be printed to standard output:

text Error propagated (my_func.rs:8:33): No such file or directory (os error 2) Error propagated (my_func.rs:12:65): No such file or directory (os error 2)