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util: Inline trivial range constructors.

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Patrick Walton 2015-12-15 11:18:41 -08:00
parent 432087c0ea
commit 6f2aa54120
1 changed files with 12 additions and 0 deletions
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12
components/util/range.rs
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@ -22,15 +22,23 @@ pub trait Int:
fn from_usize(n: usize) -> Option<Self>;
}
impl Int for isize {
#[inline]
fn zero() -> isize { 0 }
#[inline]
fn one() -> isize { 1 }
#[inline]
fn max_value() -> isize { ::std::isize::MAX }
#[inline]
fn from_usize(n: usize) -> Option<isize> { num_lib::NumCast::from(n) }
}
impl Int for usize {
#[inline]
fn zero() -> usize { 0 }
#[inline]
fn one() -> usize { 1 }
#[inline]
fn max_value() -> usize { ::std::usize::MAX }
#[inline]
fn from_usize(n: usize) -> Option<usize> { Some(n) }
}
@ -88,9 +96,13 @@ macro_rules! int_range_index {
}
impl $crate::range::Int for $Self_ {
#[inline]
fn zero() -> $Self_ { $Self_($crate::range::Int::zero()) }
#[inline]
fn one() -> $Self_ { $Self_($crate::range::Int::one()) }
#[inline]
fn max_value() -> $Self_ { $Self_($crate::range::Int::max_value()) }
#[inline]
fn from_usize(n: usize) -> Option<$Self_> { $crate::range::Int::from_usize(n).map($Self_) }
}