Macro mmrbi::warning

macro_rules! warning {
    ($($tt:tt)*) => { ... };
}

Display a warning in the same style as cargo or rustc: warning[E1234]: a warning message --> examples/macros.rs:2:3

Example

warning!(at: "examples/macros.rs", line: 2, col: 3, code: "E1234", "a {} message", "warning");
warning!("a {} message", "warning"); // all params optional