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librustdoc: lazily format list of aliases in render_impl_summary

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This commit is contained in:
Yotam Ofek 2025-02-10 17:37:33 +00:00
parent bc061858d2
commit 5c5763a6cf
1 changed files with 6 additions and 6 deletions
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12
src/librustdoc/html/render/mod.rs
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@ -63,7 +63,7 @@ pub(crate) use self::context::*;
pub(crate) use self::span_map::{LinkFromSrc, collect_spans_and_sources};
pub(crate) use self::write_shared::*;
use crate::clean::{self, ItemId, RenderedLink};
use crate::display::MaybeDisplay as _;
use crate::display::{Joined as _, MaybeDisplay as _};
use crate::error::Error;
use crate::formats::Impl;
use crate::formats::cache::Cache;
@ -2142,11 +2142,11 @@ pub(crate) fn render_impl_summary(
) {
let inner_impl = i.inner_impl();
let id = cx.derive_id(get_id_for_impl(cx.tcx(), i.impl_item.item_id));
let aliases = if aliases.is_empty() {
String::new()
} else {
format!(" data-aliases=\"{}\"", aliases.join(","))
};
let aliases = (!aliases.is_empty())
.then_some(fmt::from_fn(|f| {
write!(f, " data-aliases=\"{}\"", fmt::from_fn(|f| aliases.iter().joined(",", f)))
}))
.maybe_display();
write_str(w, format_args!("<section id=\"{id}\" class=\"impl\"{aliases}>"));
render_rightside(w, cx, &i.impl_item, RenderMode::Normal);
write_str(