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more clippy::perf fixes
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Rustdoc-Json: Add enum discriminant
Does the first part of #101337, by adding it to `clean`, but doesn't change HTML output, as
1. [No Consensus has appeared on the UI for this](https://rust-lang.zulipchat.com/#narrow/stream/266220-rustdoc/topic/Enum.20discriminant.20values.20in.20HTML.20output)
2. [When inlining across crates, information is lost](https://rust-lang.zulipchat.com/#narrow/stream/266220-rustdoc/topic/.60clean_variant_def.20.60vs.20.60clean_variant_data.60)
JSON doesn't have either of these limitations.
r? `@GuillaumeGomez`
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r=GuillaumeGomez
rustdoc: remove redundant mobile-sized `.source nav:not(.sidebar).sub`
It's redundant because there's already a selector `.source nav.sub` with exactly the same margin-left at [line 796].
[line 796]: https://github.com/rust-lang/rust/blob/84f0c3f79a85329dd79a54694ff8a7f427c842e9/src/librustdoc/html/static/css/rustdoc.css#L796
This selector was added in 1e98fb10274ea0245f865ddb1e295e454382000b, along with an identical desktop selector, but that desktop selector was removed in 6a5f8b1aef1417d7dc85b5d0a229d2db1930eb7c as part of a larger simplification.
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It's redundant because there's already a selector `.source nav.sub` with
exactly the same margin-left at line 796.
This selector was added in 1e98fb10274ea0245f865ddb1e295e454382000b, along
with an identical desktop selector, but that desktop selector was removed in
6a5f8b1aef1417d7dc85b5d0a229d2db1930eb7c as part of a larger simplification.
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Added in 34bd2b845b3acd84c5a9bddae3ff8081c19ec5e9
For this to actually do anything, [according to MDN] (and Firefox Dev Tools),
it must be a "flex item", which only happens if its a direct child of a node
with `display: flex` on it. It seems like it could not have worked at the time
when this rule was added, because the only items in `rustdoc.css` with
`display: flex` active were:
* `#help`
This should not contain anything like this.
* `.impl-items h4, h4.impl, h3.impl`
These are all headers, so they shouldn't contain `.impl-items` either.
* `.content .impl-items .method, .content .impl-items > .type, .impl-items > .associatedconstant`
Associated constants and methods definitely shouldn't contain a list of impl
items, and the `.type` class seems to refer to type aliases, which, when
shown inside of an impl, only show a link to the aliased type.
[according to MDN]: https://developer.mozilla.org/en-US/docs/Web/CSS/flex-basis
Nowadays, `display: flex` is a lot more prolific, but `.impl-items` still
seems to only be used in plain block parents:
* If it's not a trait impl, then it's nested below a `<div>` with an id but no
class, added in a5216cf67d93de97091b41ecba85de2e08f39863. This will be
`display: block`, probably. For example, [vec deref]
* Inherent impls also get a `<div>` tag, for example [vec impl], and they are
also wrapped by their own non-flexbox `<details>` tag.
* If it's a tait implementation, then it's also nested below a `<details>`
container, like [deref cstring].
[vec impl]: https://doc.rust-lang.org/1.63.0/std/vec/struct.Vec.html#impl
[vec deref]: https://doc.rust-lang.org/1.63.0/std/vec/struct.Vec.html#deref-methods-%5BT%5D
[deref cstring]: https://doc.rust-lang.org/1.63.0/std/ops/trait.Deref.html#impl-Deref
Also, this would imply that trait items ought to take up as much space as
possible, pushing everything else to the edge of the screen. If this is nested
directly below the `.rustdoc` container, which has a row basis, that would
be bad.
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rustdoc: remove old CSS selector that causes weird spacing
It was added with e08a84a0c18739417a50c3e46917ced5037244eb (actually, it was called `.methods > .stability` at the time) and was directly nested that way.
**EDIT**: It is technically reachable code still, but it seems wrong.
## With the old CSS rule still present
https://notriddle.com/notriddle-rustdoc-test/weird-spacing/lib/struct.Foo.html
## Version 2 (an older version of this PR)
https://notriddle.com/notriddle-rustdoc-test/normal-spacing-2/lib/struct.Foo.html
## Version 3 (with alignment fix for mobile)
https://notriddle.com/notriddle-rustdoc-test/normal-spacing-3/lib/struct.Foo.html
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It was added with e08a84a0c18739417a50c3e46917ced5037244eb
(actually, it was called `.methods > .stability` at the time) and was
directly nested that way.
But with the switch to `<details>`, the code has changed drastically out from
under it, to the point where you have to go out of your way to actually get
it to render this way, and the result looks overly-tight and weird alongside
the normal version where this code is not reachable.
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Remove unused .toggle-label CSS rule
It was added in https://github.com/rust-lang/rust/pull/44192 but since we moved to `<details>`, we don't use this rule any more.
r? `@notriddle`
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r=GuillaumeGomez
rustdoc: remove unused CSS `#main-content > .since`
This rule was added (actually, it was called `#main > .since` back then) with cdca0843779eed0b9046e9fee48c91458ad51605 and you can see an example of the bug it's intended to fix in <https://doc.rust-lang.org/1.9.0/std/fmt/fn.write.html> by looking at the `1.0.0` version marker.
However, a5a2f2b951ea982a666eaf52b1874d8f1b17290b changed it so that `<span class="since">` is always placed in an out-of-band wrapper, so it's never nested directly below `#main` / `#main-content` any more.
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This rule was added (actually, it was called `#main > .since` back then) with
cdca0843779eed0b9046e9fee48c91458ad51605 and you can see an example of the
bug it's intended to fix in <https://doc.rust-lang.org/1.9.0/std/fmt/fn.write.html>
by looking at the `1.0.0` version marker.
However, a5a2f2b951ea982a666eaf52b1874d8f1b17290b changed it so that
`<span class="since">` is always placed in an out-of-band wrapper, so it's
never nested directly below `#main` / `#main-content` any more.
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r=GuillaumeGomez
rustdoc: remove unneeded CSS `.content table td:first-child > a`
This rule was added in c1c6175e62189f8f0e6479bff7bac0e59a95a406 to benefit the module items table. However, the module items table stopped using table tags when 6020c79ddeafe8d9760b27c14c39da81bac9b4a6 switched us over to grid layout.
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rustdoc: remove unused `.docblock .impl-items` CSS
The impl-items list stopped being nested inside a docblock since c1b1d6804bfce1aee3a95b3cbff3eaeb15bad9a4
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r=notriddle
Remove unneeded where whitespace
It fixes these two bugs:
It's a relic from a very old time (this commit: https://github.com/rust-lang/rust/commit/bfd01b7f40ae2cbfe9acbc1d10e79ffe16870df8).
You can test the result [here](https://rustdoc.crud.net/imperio/remove-unneeded-where-whitespace/lib2/struct.WhereWhitespace.html).
cc `````````@jsha`````````
r? `````````@notriddle`````````
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This rule was added in c1c6175e62189f8f0e6479bff7bac0e59a95a406 to benefit
the module items table. However, the module items table stopped using table
tags when 6020c79ddeafe8d9760b27c14c39da81bac9b4a6 switched us over to grid
layout.
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Fix a bunch of typo
This PR will fix some typos detected by [typos].
I only picked the ones I was sure were spelling errors to fix, mostly in
the comments.
[typos]: https://github.com/crate-ci/typos
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The impl-items list stopped being nested inside a docblock since c1b1d6804bfce1aee3a95b3cbff3eaeb15bad9a4
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rustdoc: Resugar async fn return type in `clean`, not `html`
This way it also happens for json output.
Fixes #101199
r? ``@GuillaumeGomez``
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Ignore `reference`s in "Type::inner_def_id"
Fixes #90775.
Reopening of #90726.
As discussed on [zulip](https://rust-lang.zulipchat.com/#narrow/stream/266220-rustdoc/topic/rendering.20for.20reference.20primitive.20doc.20page), the reference page shouldn't list these implementations (since they are listed on the types and on the traits in any case). And more generally, you don't implement something on a reference but on something behind a reference. I think it's the important point.
So currently it looks like this:
With this PR, only the implementations over generics behind a reference are kept.
You can test it [here](https://rustdoc.crud.net/imperio/def-id-remove-weird-case/std/primitive.reference.html).
cc ``@camelid``
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This PR will fix some typos detected by [typos].
I only picked the ones I was sure were spelling errors to fix, mostly in
the comments.
[typos]: https://github.com/crate-ci/typos
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Fix search results color on hover for ayu theme
Before:
After:
You can test it [here](https://rustdoc.crud.net/imperio/search-results-color-ayu/foo/index.html?search=item).
r? ``@jsha``
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This way it also happens for json output.
Fixes #101199
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rustdoc: remove unused CSS selectors for `.table-display`
This class was added to support the function signature [src] lockup. That lockup was changed in 34bd2b845b3acd84c5a9bddae3ff8081c19ec5e9 to use flexbox instead, leaving these selectors unused.
Continuation of #101046
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This class was added to support the function signature [src] lockup. That
lockup was changed in 34bd2b845b3acd84c5a9bddae3ff8081c19ec5e9 to use flexbox
instead, leaving these selectors unused.
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Avoid cloning a collection only to iterate over it
`@rustbot` label: +C-cleanup
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Merge duplicated CSS rules
I used the [stylelint](https://stylelint.io/user-guide/configure) tool to check for duplicated CSS rules in order to merge them.
r? `@notriddle`
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rustdoc: remove empty extern_crates and type="text/javascript" on script
Like #101023, this removes an attribute with a default value.
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rustdoc: remove incorrect CSS selector `.impl-items table td`
Fixes #100994
This selector was added in c7312fbae4979c6d4fdfbd1f55a71cd47d82a480. The bug can be seen at <https://doc.rust-lang.org/1.27.0/alloc/slice/trait.SliceIndex.html#foreign-impls>.
This rule was added to help with a `<table>` that was used for displaying the function signature [src] lockup. That lockup was changed in 34bd2b845b3acd84c5a9bddae3ff8081c19ec5e9 to use flexbox instead, leaving this selector unused (at least, for its original purpose).
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rustdoc: remove unused CSS for `hidden-by-*-hider`
This CSS seems to have become obsolete with the move to `<details>` tags,
and its corresponding JavaScript was removed in aee054d05d8b795d35c0b448a4b731b6507aa459
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r=GuillaumeGomez
rustdoc: omit start/end tags for empty item description blocks
Related to #100952
This is definitely not a complete solution, but it does shrink keysyms/index.html on smithay from 620K to 516K.
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Like #101023, this removes an attribute with a default value.
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Fixes #100994
This selector was added in c7312fbae4979c6d4fdfbd1f55a71cd47d82a480.
The bug can be seen at <https://doc.rust-lang.org/1.27.0/alloc/slice/trait.SliceIndex.html#foreign-impls>.
This rule was added to help with a `<table>` that was used for displaying the
function signature [src] lockup. That lockup was changed in
34bd2b845b3acd84c5a9bddae3ff8081c19ec5e9 to use flexbox instead, leaving this
selector unused (at least, for its original purpose).
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This CSS seems to have become obsolete with the move to `<details>` tags,
and its corresponding JavaScript was removed in aee054d05d8b795d35c0b448a4b731b6507aa459
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rustdoc: remove `type="text/css"` from stylesheet links
MDN directly recommends this in <https://developer.mozilla.org/en-US/docs/Web/HTML/Element/link>, since "CSS is the only stylesheet language used on the web."
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rustdoc: remove unused CSS for `.variants_table`
Continuation of #100938 and #101010. This rule was added to support the old, table-based style for displaying enum variants, which are now displayed using headers and paragraphs.
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Fix doc cfg on reexports
Fixes #83428.
The problem was that the newly inlined item cfg propagation was not working since its real parent is different than its current one.
For the implementation, I decided to put it directly into `CfgPropagation` instead of inside `inline.rs` because I thought it would be simpler to maintain and to not forget if new kind of items are added if it's all done in one place.
r? `@notriddle`
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Reduce right-side DOM size
This is another follow-up of https://github.com/rust-lang/rust/pull/100429 but not in code blocks this time.
So the idea is: if there is only one element in the `.rightside` element, there is no need to wrap it, we can just create one node.
On each page, I run this JS: `document.getElementsByTagName('*').length`. Important to note: the bigger the number of elements inside the page, the greater the gain. It also doesn't work very nicely on std docs because there are a lot of version annotations. So with this PR, It allows to get the following results:
| file name | before this PR | with this PR | diff |
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| std/default/trait.Default.html | 2189 | 1331 | 39.2% |
| std/vec/struct.Vec.html | 14073 | 13842 | 1.7% |
| std/fmt/trait.Debug.html | 5313 | 4907 | 7.7% |
| std/ops/trait.Index.html | 642 | 630 | 1.9% |
| gtk4/WidgetExt | 3269 | 3061 | 6.4% |
You can test it [here](https://rustdoc.crud.net/imperio/reduce-rightsize-dom-size/gtk4/prelude/trait.WidgetExt.html).
r? `@notriddle`
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MDN directly recommends this in <https://developer.mozilla.org/en-US/docs/Web/HTML/Element/link>,
since "CSS is the only stylesheet language used on the web."
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Related to #100952
This is definitely not a complete solution, but it does shrink
keysyms/index.html on smithay from 620K to 516K.
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rustdoc: remove unused CSS for `.multi-column`
As a sanity check, [this tool] can be used to run a CSS query across an HTML tree to detect if a selector ever matches (I use compiler-docs and std docs). This isn't good enough, because I also need to account for JavaScript, but this class is never mentioned in any of the JS files, either.
According to [blame], this class was added when rustdoc was first written, and, as far as I can tell, was never actually used.
[this tool]: https://gitlab.com/notriddle/html-scanner
[blame]: https://github.com/rust-lang/rust/blame/4d45b0745ab227feb9000bc15713ade4b99241ea/src/librustdoc/html/static/css/rustdoc.css#L753-L761
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