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Remove unnecessary fields and parameters in rustdoc
r? `@GuillaumeGomez`
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r=Manishearth,Nemo157,GuillaumeGomez
Use details tag for trait implementors.
Part of #83332 and following on from #83337 and #83355.
This removes one category of JS-generated toggles (implementors), and replaces them with a `<details>` tag. This simplifies the JS, and fixes some bugs where things that were supposed to be hidden by the toggle were not hidden. Compare https://hoffman-andrews.com/rust/details-implementors/std/io/trait.Read.html#impl-Read vs https://doc.rust-lang.org/nightly/std/io/trait.Read.html#implementors.
This introduces a `left: -23px` to put the toggle in the correct place, matching the current style for `.collapse-toggle`.
It's worth noting this introduces a slight behavior change: since the entire line is now a `<summary>`, any part of the line is clickable. So for instance, in `impl Read for File`, clicking `impl` or `for` will collapse / expand the docs. Clicking `Read` or `File` still links to the appropriate documentation as before.
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clean::Module
It can be calculated on-demand even without a TyCtxt.
This also changed `from_item_kind` to take a whole item, which avoids
having to add more and more parameters.
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rustdoc: Convert sub-variant toggle to HTML
Instead of creating a JS toggle, this injects details/summary for
sub-variants of enums. This also fixes the CSS so that the toggle button
does not jump when expanding/collapsing.
Takes inspiration from #83337 and should be considered part of #83332. Not quite sure if the `.sub-variant` selectors could be further simplified? AFAICS it is only used in that place, and that does not seem to allow any recursion.
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It's always `tcx.crate_name(LOCAL_CRATE)`, it doesn't need to be passed
in separately.
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This makes Rustdoc titles for items read like
"x in cratename::blah::foo - Rust". Title for modules and other
non-items are unchanged, and still read like
"doccratenameconst::blah::foo - Rust". This makes managing several open
Rustdoc tabs easier.
Closes #84371.
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rustdoc: Simplify some document functions
* Remove `prefix` param of `document_short/full`, `render_markdown`, as its always an empty string.
* Remove `Option` wrapping of `document_short` `parent`, as its always `Some`.
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Add stability tags to ImportItem.
Fixes #83832.
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This switches from JS-generated toggles to using the HTML <details> tag
for expanding and collapsing entries in the "Implementors" section.
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* Remove `prefix` param of `document_short/full`, `render_markdown`, as its always an empty string.
* Remove `Option` wrapping of `document_short` `parent`, as its always `Some`.
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Instead of creating a JS toggle, this injects details/summary for
sub-variants of enums. This also fixes the CSS so that the toggle button
does not jump when expanding/collapsing.
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rustdoc: Reduce visual weight of attributes.
Followup from #83337. As part of that PR, we stopped hiding attributes behind a toggle, because most things have just zero or one attributes. However, this made clear that the current rendering of attributes emphasizes them a lot, which distracts from function signatures. This PR changes their color of attributes to be the same as the toggles, and reduces their font weight.
This also removes `#[lang]` from the list of ALLOWED_ATTRIBUTES. This attribute is an implementation detail rather than part of the public-facing documentation.
Demo at https://hoffman-andrews.com/rust/de-emph-attr/std/string/struct.String.html#method.trim
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rustdoc: get rid of CURRENT_DEPTH
Fixes #82742
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rustdoc: move some search code into search.js
This reduces main.s from 3094 lines to 1587. Also it saves some bytes
of download in the case where search isn't used.
There were a fair number of variables that needed to be accessible in
both main.js and search.js, but I didn't want to put too many symbols in
the global namespace, so I consolidated much of the search-related
state and functions into a new object `window.searchState`.
Demo at https://hoffman-andrews.com/rust/move-search/std/?search=foo
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This should help make things consistent.
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Instead of using a depth counter and adding "../" to get to the top,
this commit makes rustdoc actually compare the path of what it's
linking from to the path that it's linking to. This makes the resulting
HTML shorter.
Here's a comparison of one of the largest (non-source) files in the
Rust standard library docs (about 4% improvement before gzipping).
$ wc -c struct.Wrapping.old.html struct.Wrapping.new.html
2387389 struct.Wrapping.old.html
2298538 struct.Wrapping.new.html
Most if it can be efficiently gzipped away.
$ wc -c struct.Wrapping.old.html.gz struct.Wrapping.new.html.gz
70679 struct.Wrapping.old.html.gz
70050 struct.Wrapping.new.html.gz
But it also makes a difference in the final DOM size, reducing it from 91MiB to 82MiB.
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rustdoc: Hide item contents, not items
This tweaks rustdoc to hide item contents instead of items, and only when there are too many of them.
This means that users will _always_ see the type parameters, and will _often_ see fields/etc as long as they are small. Traits have some heuristics for hiding only the methods or only the methods and the consts, since the associated types are super important.
I'm happy to play around with the heuristics here; we could potentially make it so that structs/enums/etc are always hidden but traits will try really hard to show type aliases.
This needs a test, but you can see it rendered at https://manishearth.net/sand/doc_render/bar/
<details>
<summary> Code example </summary>
```rust
pub struct PubStruct {
pub a: usize,
pub b: usize,
}
pub struct BigPubStruct {
pub a: usize,
pub b: usize,
pub c: usize,
pub d: usize,
pub e: usize,
pub f: usize,
}
pub union BigUnion {
pub a: usize,
pub b: usize,
pub c: usize,
pub d: usize,
pub e: usize,
pub f: usize,
}
pub union Union {
pub a: usize,
pub b: usize,
pub c: usize,
}
pub struct PrivStruct {
a: usize,
b: usize,
}
pub enum Enum {
A, B, C,
D {
a: u8,
b: u8
}
}
pub enum LargeEnum {
A, B, C, D, E, F, G, H, I, J
}
pub trait Trait {
type A;
#[must_use]
fn foo();
fn bar();
}
pub trait GinormousTrait {
type A;
type B;
type C;
type D;
type E;
type F;
const N: usize = 1;
#[must_use]
fn foo();
fn bar();
}
pub trait HugeTrait {
type A;
const M: usize = 1;
const N: usize = 1;
const O: usize = 1;
const P: usize = 1;
const Q: usize = 1;
#[must_use]
fn foo();
fn bar();
}
pub trait BigTrait {
type A;
#[must_use]
fn foo();
fn bar();
fn baz();
fn quux();
fn frob();
fn greeble();
}
#[macro_export]
macro_rules! foo {
(a) => {a};
}
```
</details>
Fixes https://github.com/rust-lang/rust/issues/82114
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Export a few variables and functions into the global scope because they
are needed both by main.js and search-index.js.
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Introduce a first use of the `<details>` and `<summary>` tags as
replacements for the JS-built toggles. I think this has the potential to
replace all the JS toggles and generally clean up the JS, CSS, and HTML.
Split rendering of attributes into two cases: in the case where they are
rendered as descendents of a `<pre>` tag, where they use indent spaces and
newlines for formatting, matching their surrounding markup. In the case
where they are rendered as descendants of a `<code>` tag, they are
rendered as `<div>`. This let me clean up some fragile CSS that was
adjusting the margin-left of attributes depending on context.
Remove toggles for attributes. With the ALLOWED_ATTRIBUTES filter, it's
rare for an item to have more than one attribute, so hiding attributes
behind a toggle doesn't save any screen space in the common case.
Fix a couple of invocations of `matches!` that didn't compile on my
machine.
Fix a boolean for the JS `createToggle` call that was causing
"Expand description" to show up spuriously on already-expanded
descriptions.
Add JS for auto-hide settings and hide all / show all.
Remove a z-index property and some font color tweaks made unnecessary
by the <details> toggles.
Add CSS for the <details> toggles.
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Co-authored-by: Joshua Nelson <joshua@yottadb.com>
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Co-authored-by: Joshua Nelson <joshua@yottadb.com>
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