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fallout from feature-gating unary negation on unsigned integers.

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This commit is contained in:
Felix S. Klock II 2015-04-01 12:36:37 +02:00
parent d8e309320d
commit 3225b04c7d
8 changed files with 27 additions and 11 deletions
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24
src/libcore/ops.rs
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@ -482,8 +482,10 @@ pub trait Neg {
fn neg(self) -> Self::Output;
}
macro_rules! neg_impl {
($($t:ty)*) => ($(
macro_rules! neg_impl_core {
($id:ident => $body:expr, $($t:ty)*) => ($(
#[stable(feature = "rust1", since = "1.0.0")]
#[allow(unsigned_negation)]
impl Neg for $t {
@ -492,14 +494,28 @@ macro_rules! neg_impl {
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
fn neg(self) -> $t { -self }
fn neg(self) -> $t { let $id = self; $body }
}
forward_ref_unop! { impl Neg, neg for $t }
)*)
}
neg_impl! { usize u8 u16 u32 u64 isize i8 i16 i32 i64 f32 f64 }
macro_rules! neg_impl_numeric {
($($t:ty)*) => { neg_impl_core!{ x => -x, $($t)*} }
}
macro_rules! neg_impl_unsigned {
($($t:ty)*) => {
neg_impl_core!{ x => {
#[cfg(stage0)]
use ::num::wrapping::WrappingOps;
!x.wrapping_add(1)
}, $($t)*} }
}
neg_impl_unsigned! { usize u8 u16 u32 u64 }
neg_impl_numeric! { isize i8 i16 i32 i64 f32 f64 }
/// The `Not` trait is used to specify the functionality of unary `!`.
///