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Use const generics for some VecDeque impls.

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This commit is contained in:
Mazdak Farrokhzad 2019-07-28 05:12:16 +02:00
parent 8b57f689d5
commit 744ec8809d
1 changed files with 14 additions and 26 deletions
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40
src/liballoc/collections/vec_deque.rs
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@ -9,6 +9,7 @@
#![stable(feature = "rust1", since = "1.0.0")]
use core::array::LengthAtMost32;
use core::cmp::{self, Ordering};
use core::fmt;
use core::iter::{repeat_with, FromIterator, FusedIterator};
@ -2571,13 +2572,14 @@ impl<A: PartialEq> PartialEq for VecDeque<A> {
impl<A: Eq> Eq for VecDeque<A> {}
macro_rules! __impl_slice_eq1 {
($Lhs: ty, $Rhs: ty) => {
__impl_slice_eq1! { $Lhs, $Rhs, Sized }
};
($Lhs: ty, $Rhs: ty, $Bound: ident) => {
([$($vars:tt)*] $lhs:ty, $rhs:ty, $($constraints:tt)*) => {
#[stable(feature = "vec_deque_partial_eq_slice", since = "1.17.0")]
impl<A: $Bound, B> PartialEq<$Rhs> for $Lhs where A: PartialEq<B> {
fn eq(&self, other: &$Rhs) -> bool {
impl<A, B, $($vars)*> PartialEq<$rhs> for $lhs
where
A: PartialEq<B>,
$($constraints)*
{
fn eq(&self, other: &$rhs) -> bool {
if self.len() != other.len() {
return false;
}
@ -2589,26 +2591,12 @@ macro_rules! __impl_slice_eq1 {
}
}
__impl_slice_eq1! { VecDeque<A>, Vec<B> }
__impl_slice_eq1! { VecDeque<A>, &[B] }
__impl_slice_eq1! { VecDeque<A>, &mut [B] }
macro_rules! array_impls {
($($N: expr)+) => {
$(
__impl_slice_eq1! { VecDeque<A>, [B; $N] }
__impl_slice_eq1! { VecDeque<A>, &[B; $N] }
__impl_slice_eq1! { VecDeque<A>, &mut [B; $N] }
)+
}
}
array_impls! {
0 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29
30 31 32
}
__impl_slice_eq1! { [] VecDeque<A>, Vec<B>, }
__impl_slice_eq1! { [] VecDeque<A>, &[B], }
__impl_slice_eq1! { [] VecDeque<A>, &mut [B], }
__impl_slice_eq1! { [const N: usize] VecDeque<A>, [B; N], [B; N]: LengthAtMost32 }
__impl_slice_eq1! { [const N: usize] VecDeque<A>, &[B; N], [B; N]: LengthAtMost32 }
__impl_slice_eq1! { [const N: usize] VecDeque<A>, &mut [B; N], [B; N]: LengthAtMost32 }
#[stable(feature = "rust1", since = "1.0.0")]
impl<A: PartialOrd> PartialOrd for VecDeque<A> {