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Optimize `Wtf8Buf::into_string` for the case where it contains UTF-8.
Add a `is_known_utf8` flag to `Wtf8Buf`, which tracks whether the
string is known to contain UTF-8. This is efficiently computed in many
common situations, such as when a `Wtf8Buf` is constructed from a `String`
or `&str`, or with `Wtf8Buf::from_wide` which is already doing UTF-16
decoding and already checking for surrogates.
This makes `OsString::into_string` O(1) rather than O(N) on Windows in
common cases.
And, it eliminates the need to scan through the string for surrogates in
`Args::next` and `Vars::next`, because the strings are already being
translated with `Wtf8Buf::from_wide`.
Many things on Windows construct `OsString`s with `Wtf8Buf::from_wide`,
such as `DirEntry::file_name` and `fs::read_link`, so with this patch,
users of those functions can subsequently call `.into_string()` without
paying for an extra scan through the string for surrogates.
r? `@ghost`
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According to [blame], this rule was added to support enum struct
variants. However, enum struct variants don't use tables in their design
any more, so this rule does nothing.
[blame]: https://github.com/rust-lang/rust/blame/87991d5f5d72d6baca490141cb890211ba2f3843/src/librustdoc/html/static/css/rustdoc.css#L748
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Use `AttrVec` more
In some places we use `Vec<Attribute>` and some places we use
`ThinVec<Attribute>` (a.k.a. `AttrVec`). This results in various points
where we have to convert between `Vec` and `ThinVec`.
This commit changes the places that use `Vec<Attribute>` to use
`AttrVec`. A lot of this is mechanical and boring, but there are
some interesting parts:
- It adds a few new methods to `ThinVec`.
- It implements `MapInPlace` for `ThinVec`, and introduces a macro to
avoid the repetition of this trait for `Vec`, `SmallVec`, and
`ThinVec`.
Overall, it makes the code a little nicer, and has little effect on
performance. But it is a precursor to removing
`rustc_data_structures::ThinVec` and replacing it with
`thin_vec::ThinVec`, which is implemented more efficiently.
r? `@spastorino`
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In some places we use `Vec<Attribute>` and some places we use
`ThinVec<Attribute>` (a.k.a. `AttrVec`). This results in various points
where we have to convert between `Vec` and `ThinVec`.
This commit changes the places that use `Vec<Attribute>` to use
`AttrVec`. A lot of this is mechanical and boring, but there are
some interesting parts:
- It adds a few new methods to `ThinVec`.
- It implements `MapInPlace` for `ThinVec`, and introduces a macro to
avoid the repetition of this trait for `Vec`, `SmallVec`, and
`ThinVec`.
Overall, it makes the code a little nicer, and has little effect on
performance. But it is a precursor to removing
`rustc_data_structures::thin_vec::ThinVec` and replacing it with
`thin_vec::ThinVec`, which is implemented more efficiently.
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Rollup of 11 pull requests
Successful merges:
- #100556 (Clamp Function for f32 and f64)
- #100663 (Make slice::reverse const)
- #100697 ( Minor syntax and formatting update to doc comment on `find_vtable_types_for_unsizing`)
- #100760 (update test for LLVM change)
- #100761 (some general mir typeck cleanup)
- #100775 (rustdoc: Merge source code pages HTML elements together v2)
- #100813 (Add `/build-rust-analyzer/` to .gitignore)
- #100821 (Make some docs nicer wrt pointer offsets)
- #100822 (Replace most uses of `pointer::offset` with `add` and `sub`)
- #100839 (Make doc for stdin field of process consistent)
- #100842 (Add diagnostics lints to `rustc_transmute` module (zero diags))
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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rustdoc: strategic boxing to reduce the size of ItemKind and Type
The `Type` change redesigns `QPath` to box the entire data structure instead of boxing `self_type` and the `trait_`.
This reduces the size of several `ItemKind` variants, leaving `Impl` as the biggest variant. The `ItemKind` change boxes that variant's payload.
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rustdoc: Merge source code pages HTML elements together v2
This is the follow-up of https://github.com/rust-lang/rust/pull/100429.
I strongly recommend to review it one commit at a time because otherwise it's a lot at once.
For these ones, on each page, I run this JS: `document.getElementsByTagName('*').length`. The goal is to count the number of DOM elements. I took some pages that seemed big, but don't hesitate to check some others. I also added the "starting point" because it's quite nice to see how much the page was reduced thanks to these two PRs.
| file name | before #100429 | before this PR | with this PR | diff |
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| std/lib.rs.html (source link on std crate page) | 3455 | 2332 | 1772 | 24% |
| alloc/vec/mod.rs.html (source on Vec type page) | 11012 | 5982 | 5833 | 2.5% |
| alloc/string.rs.html (source on String type page) | 10800 | 6010 | 5822 | 3.2% |
| std/sync/mutex.rs.html (source on Mutex type page) | 2953 | 2041 | 2038 | 0.1% |
So unsurprisingly, the more attributes you have, the bigger the difference.
You can test it [here](https://rustdoc.crud.net/imperio/reduce-span-v2/src/std/lib.rs.html).
cc ``````@jsha``````
r? ``````@notriddle``````
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Update minifier version to 0.2.2
Following [this PR](https://github.com/GuillaumeGomez/minifier-rs/pull/98), the CSS minification should be much faster now (thanks to `@nnethercote).`
r? `@nnethercote`
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[rustdoc] Fix item info display
Fixes #100369.
The solution I came up with was simply to wrap the "text part" of the `item-info` into another span so that `flex` wouldn't mess with it.
Live demo is [here](https://rustdoc.crud.net/imperio/fix-item-info/foo/struct.ItemInfo.html).
r? ``@jsha``
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rustdoc: count deref and non-deref as same set of used methods
Fixes #100679
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Cleanup rustdoc themes
This PR continues our work to simplify the rustdoc themes by relying more on CSS variables. Interestingly enough, this time it allowed me to realize that we were having a lot of different colors for borders even though the difference is unnoticeable. I used this opportunity to unify them.
The live demo is [here](https://rustdoc.crud.net/imperio/cleanup-themes/std/index.html).
r? `@jsha`
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Attribute cleanups
r? `@ghost`
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triagebot: add translation-related mention groups
- Move some code around so that triagebot can ping relevant parties when translation logic is modified.
- Add mention groups to triagebot for translation-related files/folders.
- Auto-label pull requests with changes to translation-related files/folders with `A-translation`.
r? `@Mark-Simulacrum`
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It's unused.
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This reduces the memory consumption of ItemKind.
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rustdoc JSON: Fix ICE with `pub extern crate self as <self_crate_name>`
Closes #100531
r? `@GuillaumeGomez`
`@rustbot` labels +A-rustdoc-json +T-rustdoc
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This reduces the size of Type.
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r=notriddle
[rustdoc] Fix handling of stripped enum variant in JSON output format
Fixes https://github.com/rust-lang/rust/issues/100529.
cc ``@aDotInTheVoid`` ``@Enselic``
r? ``@notriddle``
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Rustdoc-Json: Don't remove impls for items imported from private modules
After #99287, items in private modules may still be in the json output, if a public import accesses them. To reflect this, items that are imported need to be marked as retained in the `Stripper` pass, so their impls arn't removed by `ImplStripper`.
[More context on zulip](https://rust-lang.zulipchat.com/#narrow/stream/266220-rustdoc/topic/Populating.20cache.2Eimpls), thanks to @ jyn514 for helping debug this.
``@rustbot`` modify labels: +A-rustdoc-json +T-rustdoc
r? ``@GuillaumeGomez``
Fixes #100252
Fixes #100242
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Fixes a bug where impl of items that were imported from a private module
would be striped
Fixes #100252
Fixes #100242
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Just moving code around so that triagebot can ping relevant parties when
translation logic is modified.
Signed-off-by: David Wood <david.wood@huawei.com>
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[rustdoc] remove Clean trait
Follow-up of https://github.com/rust-lang/rust/pull/99638.
This is (finally!) the last part.
r? `@Dylan-DPC`
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Rustdoc-Json: Add `Path` type for traits.
Avoids using `Type` for trait fields, as a trait must always be a path, and not any other kind of type.
``@rustbot`` modify labels: +A-rustdoc-json +T-rustdoc
Closes #100106
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make `clean::Item::span` return `Option` instead of dummy span
Fixes #100283
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Remove more Clean trait implementations
Follow-up of https://github.com/rust-lang/rust/pull/99638.
r? ``@Dylan-DPC``
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rustdoc: don't generate DOM element for operator
In our source page highlighting, we were generating `<span class="op">` tags for all "operators", including e.g. `<` `>` around generic parameters, `*`, `&`. This contributed significantly to DOM size, but we don't actually style `.op` except in the ayu theme.
Remove the styles for `.op` in ayu, and stop generating the `<span>`s.
This reduces DOM size of an example page[1] from 265,938 HTML elements to 242,165 elements, a 9% reduction.
r? ``@GuillaumeGomez``
Demo: (warning - slow!) https://rustdoc.crud.net/jsha/highlight-lighter/src/core/up/up/stdarch/crates/core_arch/src/x86/avx512f.rs.html
[1]:
https://doc.rust-lang.org/nightly/src/core/up/up/stdarch/crates/core_arch/src/x86/avx512f.rs.html
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