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Rollup merge of #110983 - GuillaumeGomez:foreign-repr, r=notriddle

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rustdoc: Get `repr` information through `AdtDef` for foreign items

As suggested by `@notriddle,` this approach works too. The only downside is that the display of the original attribute isn't kept, but I think it's an acceptable downside.

r? `@notriddle`
This commit is contained in:
Matthias Krüger 2023-04-30 01:14:59 +02:00 • committed by GitHub
commit 549b3a13a1
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8 changed files with 136 additions and 54 deletions
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38
src/librustdoc/html/render/mod.rs
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@ -48,7 +48,6 @@ use std::str;
use std::string::ToString;
use askama::Template;
use rustc_ast_pretty::pprust;
use rustc_attr::{ConstStability, Deprecation, StabilityLevel};
use rustc_data_structures::captures::Captures;
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
@ -849,10 +848,10 @@ fn assoc_method(
let (indent, indent_str, end_newline) = if parent == ItemType::Trait {
header_len += 4;
let indent_str = " ";
write!(w, "{}", render_attributes_in_pre(meth, indent_str));
write!(w, "{}", render_attributes_in_pre(meth, indent_str, tcx));
(4, indent_str, Ending::NoNewline)
} else {
render_attributes_in_code(w, meth);
render_attributes_in_code(w, meth, tcx);
(0, "", Ending::Newline)
};
w.reserve(header_len + "<a href=\"\" class=\"fn\">{".len() + "</a>".len());
@ -1021,36 +1020,15 @@ fn render_assoc_item(
}
}
const ALLOWED_ATTRIBUTES: &[Symbol] =
&[sym::export_name, sym::link_section, sym::no_mangle, sym::repr, sym::non_exhaustive];
fn attributes(it: &clean::Item) -> Vec<String> {
it.attrs
.other_attrs
.iter()
.filter_map(|attr| {
if ALLOWED_ATTRIBUTES.contains(&attr.name_or_empty()) {
Some(
pprust::attribute_to_string(attr)
.replace("\\\n", "")
.replace('\n', "")
.replace(" ", " "),
)
} else {
None
}
})
.collect()
}
// When an attribute is rendered inside a `<pre>` tag, it is formatted using
// a whitespace prefix and newline.
fn render_attributes_in_pre<'a>(
fn render_attributes_in_pre<'a, 'b: 'a>(
it: &'a clean::Item,
prefix: &'a str,
) -> impl fmt::Display + Captures<'a> {
tcx: TyCtxt<'b>,
) -> impl fmt::Display + Captures<'a> + Captures<'b> {
crate::html::format::display_fn(move |f| {
for a in attributes(it) {
for a in it.attributes(tcx, false) {
writeln!(f, "{}{}", prefix, a)?;
}
Ok(())
@ -1059,8 +1037,8 @@ fn render_attributes_in_pre<'a>(
// When an attribute is rendered inside a <code> tag, it is formatted using
// a div to produce a newline after it.
fn render_attributes_in_code(w: &mut Buffer, it: &clean::Item) {
for a in attributes(it) {
fn render_attributes_in_code(w: &mut Buffer, it: &clean::Item, tcx: TyCtxt<'_>) {
for a in it.attributes(tcx, false) {
write!(w, "<div class=\"code-attribute\">{}</div>", a);
}
}