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Diffstat (limited to 'vendor/matches/lib.rs')
-rw-r--r-- | vendor/matches/lib.rs | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/vendor/matches/lib.rs b/vendor/matches/lib.rs deleted file mode 100644 index 3bcd6e2fe..000000000 --- a/vendor/matches/lib.rs +++ /dev/null @@ -1,128 +0,0 @@ -#![no_std] - -/// Check if an expression matches a refutable pattern. -/// -/// Syntax: `matches!(` *expression* `,` *pattern* `)` -/// -/// Return a boolean, true if the expression matches the pattern, false otherwise. -/// -/// # Examples -/// -/// ``` -/// #[macro_use] -/// extern crate matches; -/// -/// pub enum Foo<T> { -/// A, -/// B(T), -/// } -/// -/// impl<T> Foo<T> { -/// pub fn is_a(&self) -> bool { -/// matches!(*self, Foo::A) -/// } -/// -/// pub fn is_b(&self) -> bool { -/// matches!(*self, Foo::B(_)) -/// } -/// } -/// -/// # fn main() { } -/// ``` -#[macro_export] -macro_rules! matches { - ($expression:expr, $($pattern:tt)+) => { - match $expression { - $($pattern)+ => true, - _ => false - } - } -} - -/// Assert that an expression matches a refutable pattern. -/// -/// Syntax: `assert_matches!(` *expression* `,` *pattern* `)` -/// -/// Panic with a message that shows the expression if it does not match the -/// pattern. -/// -/// # Examples -/// -/// ``` -/// #[macro_use] -/// extern crate matches; -/// -/// fn main() { -/// let data = [1, 2, 3]; -/// assert_matches!(data.get(1), Some(_)); -/// } -/// ``` -#[macro_export] -macro_rules! assert_matches { - ($expression:expr, $($pattern:tt)+) => { - match $expression { - $($pattern)+ => (), - ref e => panic!("assertion failed: `{:?}` does not match `{}`", e, stringify!($($pattern)+)), - } - } -} - -/// Assert that an expression matches a refutable pattern using debug assertions. -/// -/// Syntax: `debug_assert_matches!(` *expression* `,` *pattern* `)` -/// -/// If debug assertions are enabled, panic with a message that shows the -/// expression if it does not match the pattern. -/// -/// When debug assertions are not enabled, this macro does nothing. -/// -/// # Examples -/// -/// ``` -/// #[macro_use] -/// extern crate matches; -/// -/// fn main() { -/// let data = [1, 2, 3]; -/// debug_assert_matches!(data.get(1), Some(_)); -/// } -/// ``` -#[macro_export] -macro_rules! debug_assert_matches { - ($expression:expr, $($pattern:tt)+) => { - if cfg!(debug_assertions) { - match $expression { - $($pattern)+ => (), - ref e => panic!("assertion failed: `{:?}` does not match `{}`", e, stringify!($($pattern)+)), - } - } - } -} - -#[test] -fn matches_works() { - let foo = Some("-12"); - assert!(matches!(foo, Some(bar) if - matches!(bar.as_bytes()[0], b'+' | b'-') && - matches!(bar.as_bytes()[1], b'0'...b'9') - )); -} - -#[test] -fn assert_matches_works() { - let foo = Some("-12"); - assert_matches!(foo, Some(bar) if - matches!(bar.as_bytes()[0], b'+' | b'-') && - matches!(bar.as_bytes()[1], b'0'...b'9') - ); -} - -#[test] -#[should_panic(expected = "assertion failed: `Some(\"-AB\")` does not match ")] -fn assert_matches_panics() { - let foo = Some("-AB"); - assert_matches!(foo, Some(bar) if - matches!(bar.as_bytes()[0], b'+' | b'-') && - matches!(bar.as_bytes()[1], b'0'...b'9') - ); -} |