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rustdoc: show code spans as `<code>` in TOC

This commit is contained in:
Michael Howell 2024-07-22 12:59:34 -07:00
parent 68773c789a
commit 7091fa5880
9 changed files with 92 additions and 31 deletions
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29
src/librustdoc/html/markdown.rs
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@ -50,7 +50,7 @@ use rustc_span::{Span, Symbol};
use crate::clean::RenderedLink;
use crate::doctest;
use crate::doctest::GlobalTestOptions;
use crate::html::escape::Escape;
use crate::html::escape::{Escape, EscapeBodyText};
use crate::html::format::Buffer;
use crate::html::highlight;
use crate::html::length_limit::HtmlWithLimit;
@ -535,7 +535,9 @@ impl<'a, 'b, 'ids, I: Iterator<Item = SpannedEvent<'a>>> Iterator
if let Some(ref mut builder) = self.toc {
let mut text_header = String::new();
plain_text_from_events(self.buf.iter().map(|(ev, _)| ev.clone()), &mut text_header);
let sec = builder.push(level as u32, text_header, id.clone());
let mut html_header = String::new();
html_text_from_events(self.buf.iter().map(|(ev, _)| ev.clone()), &mut html_header);
let sec = builder.push(level as u32, text_header, html_header, id.clone());
self.buf.push_front((Event::Html(format!("{sec} ").into()), 0..0));
}
@ -1655,6 +1657,29 @@ pub(crate) fn plain_text_from_events<'a>(
}
}
pub(crate) fn html_text_from_events<'a>(
events: impl Iterator<Item = pulldown_cmark::Event<'a>>,
s: &mut String,
) {
for event in events {
match &event {
Event::Text(text) => {
write!(s, "{}", EscapeBodyText(text)).expect("string alloc infallible")
}
Event::Code(code) => {
s.push_str("<code>");
write!(s, "{}", EscapeBodyText(code)).expect("string alloc infallible");
s.push_str("</code>");
}
Event::HardBreak | Event::SoftBreak => s.push(' '),
Event::Start(Tag::CodeBlock(..)) => break,
Event::End(TagEnd::Paragraph) => break,
Event::End(TagEnd::Heading(..)) => break,
_ => (),
}
}
}
#[derive(Debug)]
pub(crate) struct MarkdownLink {
pub kind: LinkType,

12
src/librustdoc/html/render/sidebar.rs
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@ -81,8 +81,10 @@ impl<'a> LinkBlock<'a> {
/// A link to an item. Content should not be escaped.
#[derive(PartialOrd, Ord, PartialEq, Eq, Hash, Clone)]
pub(crate) struct Link<'a> {
/// The content for the anchor tag
/// The content for the anchor tag and title attr
name: Cow<'a, str>,
/// The content for the anchor tag (if different from name)
name_html: Option<Cow<'a, str>>,
/// The id of an anchor within the page (without a `#` prefix)
href: Cow<'a, str>,
/// Nested list of links (used only in top-toc)
@ -91,7 +93,7 @@ pub(crate) struct Link<'a> {
impl<'a> Link<'a> {
pub fn new(href: impl Into<Cow<'a, str>>, name: impl Into<Cow<'a, str>>) -> Self {
Self { href: href.into(), name: name.into(), children: vec![] }
Self { href: href.into(), name: name.into(), children: vec![], name_html: None }
}
pub fn empty() -> Link<'static> {
Link::new("", "")
@ -207,6 +209,7 @@ fn docblock_toc<'a>(
.into_iter()
.map(|entry| {
Link {
name_html: if entry.html == entry.name { None } else { Some(entry.html.into()) },
name: entry.name.into(),
href: entry.id.into(),
children: entry
@ -214,6 +217,11 @@ fn docblock_toc<'a>(
.entries
.into_iter()
.map(|entry| Link {
name_html: if entry.html == entry.name {
None
} else {
Some(entry.html.into())
},
name: entry.name.into(),
href: entry.id.into(),
// Only a single level of nesting is shown here.

18
src/librustdoc/html/templates/sidebar.html
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@ -23,11 +23,25 @@
<ul class="block{% if !block.class.is_empty() +%} {{+block.class}}{% endif %}">
{% for link in block.links %}
<li> {# #}
<a href="#{{link.href|safe}}">{{link.name}}</a> {# #}
<a href="#{{link.href|safe}}" title="{{link.name}}">
{% match link.name_html %}
{% when Some with (html) %}
{{html|safe}}
{% else %}
{{link.name}}
{% endmatch %}
</a> {# #}
{% if !link.children.is_empty() %}
<ul>
{% for child in link.children %}
<li><a href="#{{child.href|safe}}">{{child.name}}</a></li>
<li><a href="#{{child.href|safe}}" title="{{child.name}}">
{% match child.name_html %}
{% when Some with (html) %}
{{html|safe}}
{% else %}
{{child.name}}
{% endmatch %}
</a></li>
{% endfor %}
</ul>
{% endif %}

15
src/librustdoc/html/toc.rs
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@ -1,5 +1,5 @@
//! Table-of-contents creation.
use crate::html::escape::EscapeBodyText;
use crate::html::escape::Escape;
/// A (recursive) table of contents
#[derive(Debug, PartialEq)]
@ -30,7 +30,12 @@ impl Toc {
pub(crate) struct TocEntry {
pub(crate) level: u32,
pub(crate) sec_number: String,
// name is a plain text header that works in a `title` tag
// html includes `<code>` tags
// the tooltip is used so that, when a toc is truncated,
// you can mouse over it to see the whole thing
pub(crate) name: String,
pub(crate) html: String,
pub(crate) id: String,
pub(crate) children: Toc,
}
@ -116,7 +121,7 @@ impl TocBuilder {
/// Push a level `level` heading into the appropriate place in the
/// hierarchy, returning a string containing the section number in
/// `<num>.<num>.<num>` format.
pub(crate) fn push(&mut self, level: u32, name: String, id: String) -> &str {
pub(crate) fn push(&mut self, level: u32, name: String, html: String, id: String) -> &str {
assert!(level >= 1);
// collapse all previous sections into their parents until we
@ -150,6 +155,7 @@ impl TocBuilder {
self.chain.push(TocEntry {
level,
name,
html,
sec_number,
id,
children: Toc { entries: Vec::new() },
@ -171,10 +177,11 @@ impl Toc {
// recursively format this table of contents
let _ = write!(
v,
"\n<li><a href=\"#{id}\">{num} {name}</a>",
"\n<li><a href=\"#{id}\" title=\"{name}\">{num} {html}</a>",
id = entry.id,
num = entry.sec_number,
name = EscapeBodyText(&entry.name)
name = Escape(&entry.name),
html = &entry.html,
);
entry.children.print_inner(&mut *v);
v.push_str("</li>");

6
src/librustdoc/html/toc/tests.rs
View File

@ -9,7 +9,10 @@ fn builder_smoke() {
// there's been no macro mistake.
macro_rules! push {
($level: expr, $name: expr) => {
assert_eq!(builder.push($level, $name.to_string(), "".to_string()), $name);
assert_eq!(
builder.push($level, $name.to_string(), $name.to_string(), "".to_string()),
$name
);
};
}
push!(2, "0.1");
@ -48,6 +51,7 @@ fn builder_smoke() {
TocEntry {
level: $level,
name: $name.to_string(),
html: $name.to_string(),
sec_number: $name.to_string(),
id: "".to_string(),
children: toc!($($sub),*)

15
tests/rustdoc/sidebar/top-toc-html.rs
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@ -4,7 +4,7 @@
#![feature(lazy_type_alias)]
#![allow(incomplete_features)]
//! # Basic [link](https://example.com) and *emphasis*
//! # Basic [link](https://example.com) and *emphasis* and `code`
//!
//! This test case covers TOC entries with rich text inside.
//! Rustdoc normally supports headers with links, but for the
@ -12,9 +12,12 @@
//!
//! For consistency, emphasis is also filtered out.
// @has foo/index.html
//@ has foo/index.html
// User header
// @has - '//section[@id="TOC"]/h3' 'Sections'
// @has - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#basic-link-and-emphasis"]' 'Basic link and emphasis'
// @count - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#basic-link-and-emphasis"]/em' 0
// @count - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#basic-link-and-emphasis"]/a' 0
//@ has - '//section[@id="TOC"]/h3' 'Sections'
//@ has - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#basic-link-and-emphasis-and-code"]/@title' 'Basic link and emphasis and `code`'
//@ has - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#basic-link-and-emphasis-and-code"]' 'Basic link and emphasis and code'
//@ count - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#basic-link-and-emphasis-and-code"]/em' 0
//@ count - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#basic-link-and-emphasis-and-code"]/a' 0
//@ count - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#basic-link-and-emphasis-and-code"]/code' 1
//@ has - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#basic-link-and-emphasis-and-code"]/code' 'code'

22
tests/rustdoc/sidebar/top-toc-idmap.rs
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@ -14,13 +14,13 @@
//! in the `top-doc`, and the one that's not in the `top-doc`
//! needs to match the one that isn't in the `top-toc`.
// @has foo/index.html
//@ has foo/index.html
// User header
// @has - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#structs"]' 'Structs'
// @has - '//details[@class="toggle top-doc"]/div[@class="docblock"]/h2[@id="structs"]' 'Structs'
//@ has - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#structs"]' 'Structs'
//@ has - '//details[@class="toggle top-doc"]/div[@class="docblock"]/h2[@id="structs"]' 'Structs'
// Built-in header
// @has - '//section[@id="TOC"]/ul[@class="block"]/li/a[@href="#structs-1"]' 'Structs'
// @has - '//section[@id="main-content"]/h2[@id="structs-1"]' 'Structs'
//@ has - '//section[@id="TOC"]/ul[@class="block"]/li/a[@href="#structs-1"]' 'Structs'
//@ has - '//section[@id="main-content"]/h2[@id="structs-1"]' 'Structs'
/// # Fields
/// ## Fields
@ -29,15 +29,15 @@
/// The difference between struct-like headers and module-like headers
/// is strange, but not actually a problem as long as we're consistent.
// @has foo/struct.MyStruct.html
//@ has foo/struct.MyStruct.html
// User header
// @has - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#fields-1"]' 'Fields'
// @has - '//details[@class="toggle top-doc"]/div[@class="docblock"]/h2[@id="fields-1"]' 'Fields'
//@ has - '//section[@id="TOC"]/ul[@class="block top-toc"]/li/a[@href="#fields-1"]' 'Fields'
//@ has - '//details[@class="toggle top-doc"]/div[@class="docblock"]/h2[@id="fields-1"]' 'Fields'
// Only one level of nesting
// @count - '//section[@id="TOC"]/ul[@class="block top-toc"]//a' 2
//@ count - '//section[@id="TOC"]/ul[@class="block top-toc"]//a' 2
// Built-in header
// @has - '//section[@id="TOC"]/h3/a[@href="#fields"]' 'Fields'
// @has - '//section[@id="main-content"]/h2[@id="fields"]' 'Fields'
//@ has - '//section[@id="TOC"]/h3/a[@href="#fields"]' 'Fields'
//@ has - '//section[@id="main-content"]/h2[@id="fields"]' 'Fields'
pub struct MyStruct {
pub fields: i32,

4
tests/rustdoc/sidebar/top-toc-nil.rs
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@ -2,6 +2,6 @@
//! This test case covers missing top TOC entries.
// @has foo/index.html
//@ has foo/index.html
// User header
// @!has - '//section[@id="TOC"]/ul[@class="block top-toc"]' 'Basic link and emphasis'
//@ !has - '//section[@id="TOC"]/ul[@class="block top-toc"]' 'Basic link and emphasis'

2
tests/rustdoc/strip-enum-variant.no-not-shown.html
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@ -1 +1 @@
<ul class="block variant"><li><a href="#variant.Shown">Shown</a></li></ul>
<ul class="block variant"><li><a href="#variant.Shown" title="Shown">Shown</a></li></ul>