user0/rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Allow canonicalizing the array::map loop in trusted cases

Browse source
This commit is contained in:
Scott McMurray 2023-02-03 03:27:51 -08:00
parent 52df0558ea
commit 5bc328fdef
14 changed files with 239 additions and 144 deletions
Download patch file Download diff file Expand all files Collapse all files

4
library/core/src/slice/iter.rs
View file

@ -7,7 +7,9 @@ use crate::cmp;
use crate::cmp::Ordering;
use crate::fmt;
use crate::intrinsics::assume;
use crate::iter::{FusedIterator, TrustedLen, TrustedRandomAccess, TrustedRandomAccessNoCoerce};
use crate::iter::{
FusedIterator, TrustedLen, TrustedRandomAccess, TrustedRandomAccessNoCoerce, UncheckedIterator,
};
use crate::marker::{PhantomData, Send, Sized, Sync};
use crate::mem::{self, SizedTypeProperties};
use crate::num::NonZeroUsize;

9
library/core/src/slice/iter/macros.rs
View file

@ -384,6 +384,15 @@ macro_rules! iterator {
#[unstable(feature = "trusted_len", issue = "37572")]
unsafe impl<T> TrustedLen for $name<'_, T> {}
impl<'a, T> UncheckedIterator for $name<'a, T> {
unsafe fn next_unchecked(&mut self) -> $elem {
// SAFETY: The caller promised there's at least one more item.
unsafe {
next_unchecked!(self)
}
}
}
}
}