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Remove unused Add bounds in iterator for ranges impls.

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This commit is contained in:
Simon Sapin
2017-07-05 23:49:33 +02:00
parent 4b6af9704a
commit dbed18ca20
2 changed files with 8 additions and 24 deletions
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src/libcore/iter/range.rs
+8 -23
View File
@@ -277,9 +277,7 @@ unsafe impl TrustedLen for ops::RangeInclusive<$t> { }
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<A: Step> Iterator for ops::Range<A> where
for<'a> &'a A: Add<&'a A, Output = A>
{
impl<A: Step> Iterator for ops::Range<A> {
type Item = A;
#[inline]
@@ -317,10 +315,7 @@ fn size_hint(&self) -> (usize, Option<usize>) {
range_incl_trusted_len_impl!(usize isize u8 i8 u16 i16 u32 i32 i64 u64);
#[stable(feature = "rust1", since = "1.0.0")]
impl<A: Step + Clone> DoubleEndedIterator for ops::Range<A> where
for<'a> &'a A: Add<&'a A, Output = A>,
for<'a> &'a A: Sub<&'a A, Output = A>
{
impl<A: Step + Clone> DoubleEndedIterator for ops::Range<A> {
#[inline]
fn next_back(&mut self) -> Option<A> {
if self.start < self.end {
@@ -333,13 +328,10 @@ fn next_back(&mut self) -> Option<A> {
}
#[unstable(feature = "fused", issue = "35602")]
impl<A> FusedIterator for ops::Range<A>
where A: Step, for<'a> &'a A: Add<&'a A, Output = A> {}
impl<A: Step> FusedIterator for ops::Range<A> {}
#[stable(feature = "rust1", since = "1.0.0")]
impl<A: Step> Iterator for ops::RangeFrom<A> where
for<'a> &'a A: Add<&'a A, Output = A>
{
impl<A: Step> Iterator for ops::RangeFrom<A> {
type Item = A;
#[inline]
@@ -356,13 +348,10 @@ fn size_hint(&self) -> (usize, Option<usize>) {
}
#[unstable(feature = "fused", issue = "35602")]
impl<A> FusedIterator for ops::RangeFrom<A>
where A: Step, for<'a> &'a A: Add<&'a A, Output = A> {}
impl<A: Step> FusedIterator for ops::RangeFrom<A> {}
#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
impl<A: Step> Iterator for ops::RangeInclusive<A> where
for<'a> &'a A: Add<&'a A, Output = A>
{
impl<A: Step> Iterator for ops::RangeInclusive<A> {
type Item = A;
#[inline]
@@ -397,10 +386,7 @@ fn size_hint(&self) -> (usize, Option<usize>) {
}
#[unstable(feature = "inclusive_range", reason = "recently added, follows RFC", issue = "28237")]
impl<A: Step> DoubleEndedIterator for ops::RangeInclusive<A> where
for<'a> &'a A: Add<&'a A, Output = A>,
for<'a> &'a A: Sub<&'a A, Output = A>
{
impl<A: Step> DoubleEndedIterator for ops::RangeInclusive<A> {
#[inline]
fn next_back(&mut self) -> Option<A> {
use cmp::Ordering::*;
@@ -421,5 +407,4 @@ fn next_back(&mut self) -> Option<A> {
}
#[unstable(feature = "fused", issue = "35602")]
impl<A> FusedIterator for ops::RangeInclusive<A>
where A: Step, for<'a> &'a A: Add<&'a A, Output = A> {}
impl<A: Step> FusedIterator for ops::RangeInclusive<A> {}
src/test/compile-fail/range-1.rs
-1
View File
@@ -18,7 +18,6 @@ pub fn main() {
// Bool => does not implement iterator.
for i in false..true {}
//~^ ERROR `bool: std::iter::Step` is not satisfied
//~^^ ERROR `for<'a> &'a bool: std::ops::Add` is not satisfied
// Unsized type.
let arr: &[_] = &[1, 2, 3];