23 lines
530 B
Rust
23 lines
530 B
Rust
#[macro_export]
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macro_rules! is_match {
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($expression: expr, $($pattern:tt)+) => {
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is_match! {tt
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match $expression {
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$($pattern)+ => true,
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_ => false
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}
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}
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};
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(tt $value:expr) => ($value);
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}
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#[test]
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fn test_matching() {
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let foo = Some("-12");
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assert!(is_match!(foo, Some(bar) if
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is_match!(bar.as_bytes()[0], b'+' | b'-') &&
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is_match!(bar.as_bytes()[1], b'0'...b'9')
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));
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assert!(!is_match!(foo, None));
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}
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