Commit Graph

552 Commits

Author SHA1 Message Date
Alex Saveau
55d71c61b8
Remove all uses of array_assume_init
Signed-off-by: Alex Saveau <saveau.alexandre@gmail.com>
2022-10-17 13:03:54 -07:00
bors
8147e6e427 Auto merge of #103069 - matthiaskrgr:rollup-xxsx6sk, r=matthiaskrgr
Rollup of 9 pull requests

Successful merges:

 - #102092 (refactor: use grep -E/-F instead of fgrep/egrep)
 - #102781 (Improved documentation for `std::io::Error`)
 - #103017 (Avoid dropping TLS Key on sgx)
 - #103039 (checktools: fix comments)
 - #103045 (Remove leading newlines from integer primitive doc examples)
 - #103047 (Update browser-ui-test version to fix some flaky tests)
 - #103054 (Clean up rust-logo rustdoc GUI test)
 - #103059 (Fix `Duration::{try_,}from_secs_f{32,64}(-0.0)`)
 - #103067 (More alphabetical sorting)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
2022-10-14 22:56:53 +00:00
bors
bf15a9e526 Auto merge of #101030 - woppopo:const_location, r=scottmcm
Constify `Location` methods

Tracking issue: #102911

Example: https://play.rust-lang.org/?version=nightly&mode=debug&edition=2021&gist=4789884c2f16ec4fb0e0405d86b794f5
2022-10-14 20:15:51 +00:00
beetrees
c9948f5c5f
Fix Duration::{try_,}from_secs_f{32,64}(-0.0) 2022-10-14 16:07:09 +01:00
Rageking8
7122abaddf more dupe word typos 2022-10-14 12:57:56 +08:00
Dylan DPC
d8091f8991
Rollup merge of #102578 - lukas-code:ilog-panic, r=m-ou-se
Panic for invalid arguments of `{integer primitive}::ilog{,2,10}` in all modes

Decision made in https://github.com/rust-lang/rust/issues/100422#issuecomment-1245864700

resolves https://github.com/rust-lang/rust/issues/100422

tracking issue: https://github.com/rust-lang/rust/issues/70887

r? `@m-ou-se`
2022-10-12 11:11:25 +05:30
woppopo
a53e3acca9 Change tracking issue from #76156 to #102911 2022-10-11 06:40:37 +00:00
Maybe Waffle
7434b9f0d1 fixup lint name 2022-10-09 13:07:21 +00:00
Maybe Waffle
75ae20a42f allow for_loop_over_fallibles in a core test 2022-10-09 13:07:20 +00:00
woppopo
f0b8167a4e Fix test (location_const_file) 2022-10-08 11:48:53 +00:00
Ralf Jung
fd59d44f58 make const_err a hard error 2022-10-07 18:08:49 +02:00
Matthias Krüger
a5488826a9
Rollup merge of #101308 - nerdypepper:feature/is-ascii-octdigit, r=joshtriplett
introduce `{char, u8}::is_ascii_octdigit`

This feature adds two new APIs: `char::is_ascii_octdigit` and `u8::is_ascii_octdigit`, under the feature gate `is_ascii_octdigit`. These methods are shorthands for `char::is_digit(self, 8)` and `u8::is_digit(self, 8)`:

```rust
// core::char

impl char {
    pub fn is_ascii_octdigit(self) -> bool;
}

// core::num

impl u8 {
    pub fn is_ascii_octdigit(self) -> bool;
}
```

---

Couple of things I need help understanding:

- `const`ness: have I used the right attribute in this case?
- is there a way to run the tests for `core::char` alone, instead of `./x.py test library/core`?
2022-10-03 20:58:56 +02:00
Lukas Markeffsky
6acc29f88b add tests for panicking integer logarithms 2022-10-02 14:25:36 +02:00
beetrees
e409ce2159
Fix integer overflow in format!("{:.0?}", Duration::MAX) 2022-09-29 23:06:22 +01:00
woppopo
7b993885d0 Sort mod 2022-09-27 19:53:58 +00:00
woppopo
ca55a88161 Fix indent 2022-09-27 19:40:53 +00:00
woppopo
767a7771c7 Add newlines 2022-09-27 19:23:52 +00:00
woppopo
834cab7244 Add test cases for const Location 2022-09-27 19:09:32 +00:00
Urgau
9ad2f00f6a Stabilize bench_black_box 2022-09-27 17:38:51 +02:00
Akshay
591c1f25b2 introduce {char, u8}::is_ascii_octdigit 2022-09-27 11:55:13 +05:30
y86-dev
9a78faba71 Made from_waker, waker, from_raw const 2022-09-14 14:53:16 +02:00
bors
7200da0217 Auto merge of #93873 - Stovent:big-ints, r=m-ou-se
Reimplement `carrying_add` and `borrowing_sub` for signed integers.

As per the discussion in #85532, this PR reimplements `carrying_add` and `borrowing_sub` for signed integers.

It also adds unit tests for both unsigned and signed integers, emphasing on the behaviours of the methods.
2022-09-09 00:59:08 +00:00
Guillaume Gomez
0e82dc969f
Rollup merge of #99583 - shepmaster:provider-plus-plus, r=yaahc
Add additional methods to the Demand type

This adds on to the original tracking issue #96024

r? `````@yaahc`````
2022-09-02 11:34:46 +02:00
Dylan DPC
395ce34a95
Rollup merge of #100819 - WaffleLapkin:use_ptr_byte_methods, r=scottmcm
Make use of `[wrapping_]byte_{add,sub}`

These new methods trivially replace old `.cast().wrapping_offset().cast()` & similar code.
Note that [`arith_offset`](https://doc.rust-lang.org/std/intrinsics/fn.arith_offset.html) and `wrapping_offset` are the same thing.

r? ``@scottmcm``

_split off from #100746_
2022-08-29 16:49:43 +05:30
Yuki Okushi
ba31a9b505
Rollup merge of #100604 - dtolnay:okorerr, r=m-ou-se
Remove unstable Result::into_ok_or_err

Pending FCP: https://github.com/rust-lang/rust/issues/82223#issuecomment-1214920203

```@rustbot``` label +waiting-on-fcp
2022-08-26 09:51:44 +09:00
Matthias Krüger
6deca5f067
Rollup merge of #100220 - scottmcm:fix-by-ref-sized, r=joshtriplett
Properly forward `ByRefSized::fold` to the inner iterator

cc ``@timvermeulen,`` who noticed this mistake in https://github.com/rust-lang/rust/pull/100214#issuecomment-1207317625
2022-08-24 18:20:08 +02:00
Maybe Waffle
53565b23ac Make use of [wrapping_]byte_{add,sub}
...replacing `.cast().wrapping_offset().cast()` & similar code.
2022-08-23 19:32:37 +04:00
Jake Goulding
38de102cff Support eager and lazy methods for providing references and values
There are times where computing a value may be cheap, or where
computing a reference may be expensive, so this fills out the
possibilities.
2022-08-23 09:58:50 -04:00
Matthias Krüger
d49906519b
Rollup merge of #99544 - dylni:expose-utf8lossy, r=Mark-Simulacrum
Expose `Utf8Lossy` as `Utf8Chunks`

This PR changes the feature for `Utf8Lossy` from `str_internals` to `utf8_lossy` and improves the API. This is done to eventually expose the API as stable.

Proposal: rust-lang/libs-team#54
Tracking Issue: #99543
2022-08-20 19:32:07 +02:00
dylni
e8ee0b7b2b Expose Utf8Lossy as Utf8Chunks 2022-08-20 12:49:20 -04:00
bors
6c943bad02 Auto merge of #99541 - timvermeulen:flatten_cleanup, r=the8472
Refactor iteration logic in the `Flatten` and `FlatMap` iterators

The `Flatten` and `FlatMap` iterators both delegate to `FlattenCompat`:
```rust
struct FlattenCompat<I, U> {
    iter: Fuse<I>,
    frontiter: Option<U>,
    backiter: Option<U>,
}
```
Every individual iterator method that `FlattenCompat` implements needs to carefully manage this state, checking whether the `frontiter` and `backiter` are present, and storing the current iterator appropriately if iteration is aborted. This has led to methods such as `next`, `advance_by`, and `try_fold` all having similar code for managing the iterator's state.

I have extracted this common logic of iterating the inner iterators with the option to exit early into a `iter_try_fold` method:
```rust
impl<I, U> FlattenCompat<I, U>
where
    I: Iterator<Item: IntoIterator<IntoIter = U>>,
{
    fn iter_try_fold<Acc, Fold, R>(&mut self, acc: Acc, fold: Fold) -> R
    where
        Fold: FnMut(Acc, &mut U) -> R,
        R: Try<Output = Acc>,
    { ... }
}
```
It passes each of the inner iterators to the given function as long as it keep succeeding. It takes care of managing `FlattenCompat`'s state, so that the actual `Iterator` methods don't need to. The resulting code that makes use of this abstraction is much more straightforward:
```rust
fn next(&mut self) -> Option<U::Item> {
    #[inline]
    fn next<U: Iterator>((): (), iter: &mut U) -> ControlFlow<U::Item> {
        match iter.next() {
            None => ControlFlow::CONTINUE,
            Some(x) => ControlFlow::Break(x),
        }
    }

    self.iter_try_fold((), next).break_value()
}
```
Note that despite being implemented in terms of `iter_try_fold`, `next` is still able to benefit from `U`'s `next` method. It therefore does not take the performance hit that implementing `next` directly in terms of `Self::try_fold` causes (in some benchmarks).

This PR also adds `iter_try_rfold` which captures the shared logic of `try_rfold` and `advance_back_by`, as well as `iter_fold` and `iter_rfold` for folding without early exits (used by `fold`, `rfold`, `count`, and `last`).

Benchmark results:
```
                                             before                after
bench_flat_map_sum                       423,255 ns/iter      414,338 ns/iter
bench_flat_map_ref_sum                 1,942,139 ns/iter    2,216,643 ns/iter
bench_flat_map_chain_sum               1,616,840 ns/iter    1,246,445 ns/iter
bench_flat_map_chain_ref_sum           4,348,110 ns/iter    3,574,775 ns/iter
bench_flat_map_chain_option_sum          780,037 ns/iter      780,679 ns/iter
bench_flat_map_chain_option_ref_sum    2,056,458 ns/iter      834,932 ns/iter
```

I added the last two benchmarks specifically to demonstrate an extreme case where `FlatMap::next` can benefit from custom internal iteration of the outer iterator, so take it with a grain of salt. We should probably do a perf run to see if the changes to `next` are worth it in practice.
2022-08-19 02:34:30 +00:00
David Tolnay
83f081fc01
Remove unstable Result::into_ok_or_err 2022-08-17 17:20:42 -07:00
Scott McMurray
7680c8b690 Properly forward ByRefSized::fold to the inner iterator 2022-08-14 22:55:30 -07:00
austinabell
00bc9e8ac4
fix(iter::skip): Optimize next and nth implementations of Skip 2022-08-14 13:25:13 -04:00
Dylan DPC
482a6eaf10
Rollup merge of #100026 - WaffleLapkin:array-chunks, r=scottmcm
Add `Iterator::array_chunks` (take N+1)

A revival of https://github.com/rust-lang/rust/pull/92393.

r? `@Mark-Simulacrum`
cc `@rossmacarthur` `@scottmcm` `@the8472`

I've tried to address most of the review comments on the previous attempt. The only thing I didn't address is `try_fold` implementation, I've left the "custom" one for now, not sure what exactly should it use.
2022-08-14 17:09:14 +05:30
Dylan DPC
51eed00ca9
Rollup merge of #100030 - WaffleLapkin:nice_pointer_sis, r=scottmcm
cleanup code w/ pointers in std a little

Use pointer methods (`byte_add`, `null_mut`, etc) to make code in std a little nicer.
2022-08-12 20:39:10 +05:30
Matthias Krüger
275d4e779a
Rollup merge of #100112 - RalfJung:assert_send_and_sync, r=m-ou-se
Fix test: chunks_mut_are_send_and_sync

Follow-up to https://github.com/rust-lang/rust/pull/100023 to make the test actually effective
2022-08-11 22:53:03 +02:00
bors
908fc5b26d Auto merge of #99174 - scottmcm:reoptimize-layout-array, r=joshtriplett
Reoptimize layout array

This way it's one check instead of two, so hopefully (cc #99117) it'll be simpler for rustc perf too 🤞

Quick demonstration:
```rust
pub fn demo(n: usize) -> Option<Layout> {
    Layout::array::<i32>(n).ok()
}
```

Nightly: <https://play.rust-lang.org/?version=nightly&mode=release&edition=2021&gist=e97bf33508aa03f38968101cdeb5322d>
```nasm
	mov	rax, rdi
	mov	ecx, 4
	mul	rcx
	seto	cl
	movabs	rdx, 9223372036854775805
	xor	esi, esi
	cmp	rax, rdx
	setb	sil
	shl	rsi, 2
	xor	edx, edx
	test	cl, cl
	cmove	rdx, rsi
	ret
```

This PR (note no `mul`, in addition to being much shorter):
```nasm
	xor	edx, edx
	lea	rax, [4*rcx]
	shr	rcx, 61
	sete	dl
	shl	rdx, 2
	ret
```

This is built atop `@CAD97` 's #99136; the new changes are cb8aba66ef6a0e17f08a0574e4820653e31b45a0.

I added a bunch more tests for `Layout::from_size_align` and `Layout::array` too.
2022-08-10 23:50:18 +00:00
Eric Holk
c18f22058b Rename integer log* methods to ilog*
This reflects the concensus from the libs team as reported at
https://github.com/rust-lang/rust/issues/70887#issuecomment-1209513261

Co-authored-by: Yosh Wuyts <github@yosh.is>
2022-08-09 10:20:49 -07:00
Maybe Waffle
127b6c4c18 cleanup code w/ pointers in std a little 2022-08-05 16:47:49 +04:00
Tim Vermeulen
3f7004920c Move fold logic to iter_fold method and reuse it in count and last 2022-08-05 03:43:39 +02:00
Ralf Jung
a61c841385 actually call assert_send_and_sync 2022-08-03 12:44:21 -04:00
Maybe Waffle
4db628a801 Remove incorrect impl TrustedLen for ArrayChunks
As explained in the review of the previous attempt to add `ArrayChunks`,
adapters that shrink the length can't implement `TrustedLen`.
2022-08-01 19:16:24 +04:00
Ben Kimock
22dfbdd707 Add back Send and Sync impls on ChunksMut iterators
These were accidentally removed in #94247 because the representation was
changed from &mut [T] to *mut T, which has !Send + !Sync.
2022-08-01 10:32:45 -04:00
Ross MacArthur
f5485181ca Use array::IntoIter for the ArrayChunks remainder 2022-08-01 16:39:30 +04:00
Ross MacArthur
ca3d1010bb Add Iterator::array_chunks() 2022-08-01 16:39:27 +04:00
Guillaume Gomez
ef81fca760
Rollup merge of #94247 - saethlin:chunksmut-aliasing, r=the8472
Fix slice::ChunksMut aliasing

Fixes https://github.com/rust-lang/rust/issues/94231, details in that issue.
cc `@RalfJung`

This isn't done just yet, all the safety comments are placeholders. But otherwise, it seems to work.

I don't really like this approach though. There's a lot of unsafe code where there wasn't before, but as far as I can tell the only other way to uphold the aliasing requirement imposed by `__iterator_get_unchecked` is to use raw slices, which I think require the same amount of unsafe code. All that would do is tie the `len` and `ptr` fields together.

Oh I just looked and I'm pretty sure that `ChunksExactMut`, `RChunksMut`, and `RChunksExactMut` also need to be patched. Even more reason to put up a draft.
2022-07-27 17:55:01 +02:00
bors
41419e7036 Auto merge of #99491 - workingjubilee:sync-psimd, r=workingjubilee
Sync in portable-simd subtree

r? `@ghost`
2022-07-22 09:48:00 +00:00
Jubilee Young
f8aa494c69 Introduce core::simd trait imports in tests 2022-07-20 18:08:20 -07:00
bors
8bd12e8cca Auto merge of #98912 - nrc:provider-it, r=yaahc
core::any: replace some generic types with impl Trait

This gives a cleaner API since the caller only specifies the concrete type they usually want to.

r? `@yaahc`
2022-07-19 11:28:20 +00:00