chatmail-core/src/error.rs

//! # Error handling

#[derive(Debug, thiserror::Error)]
#[error("Out of Range")]
pub struct OutOfRangeError;

#[macro_export]
macro_rules! ensure_eq {
    ($left:expr, $right:expr) => ({
        match (&$left, &$right) {
            (left_val, right_val) => {
                if !(*left_val == *right_val) {
                    bail!(r#"assertion failed: `(left == right)`
  left: `{:?}`,
 right: `{:?}`"#, left_val, right_val)
                }
            }
        }
    });
    ($left:expr, $right:expr,) => ({
        ensure_eq!($left, $right)
    });
    ($left:expr, $right:expr, $($arg:tt)+) => ({
        match (&($left), &($right)) {
            (left_val, right_val) => {
                if !(*left_val == *right_val) {
                    bail!(r#"assertion failed: `(left == right)`
  left: `{:?}`,
 right: `{:?}`: {}"#, left_val, right_val,
                           format_args!($($arg)+))
                }
            }
        }
    });
}