rust/src/libcore/cmp.rs
2012-08-29 18:25:22 -07:00

41 lines
693 B
Rust

// NB: transitionary, de-mode-ing.
#[forbid(deprecated_mode)];
#[forbid(deprecated_pattern)];
/// Interfaces used for comparison.
// Awful hack to work around duplicate lang items in core test.
#[cfg(notest)]
#[lang="ord"]
trait Ord {
pure fn lt(&&other: self) -> bool;
}
#[cfg(test)]
trait Ord {
pure fn lt(&&other: self) -> bool;
}
#[cfg(notest)]
#[lang="eq"]
trait Eq {
pure fn eq(&&other: self) -> bool;
}
#[cfg(test)]
trait Eq {
pure fn eq(&&other: self) -> bool;
}
pure fn lt<T: Ord>(v1: &T, v2: &T) -> bool {
v1.lt(v2)
}
pure fn le<T: Ord Eq>(v1: &T, v2: &T) -> bool {
v1.lt(v2) || v1.eq(v2)
}
pure fn eq<T: Eq>(v1: &T, v2: &T) -> bool {
v1.eq(v2)
}