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Use ranges returned by pulldown

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Co-authored-by: Joshua Nelson <joshua@yottadb.com>
This commit is contained in:
Dániel Buga 2020-12-31 10:07:19 +01:00
parent 923e3d2400
commit 08f7b0a422
1 changed files with 35 additions and 31 deletions
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66
src/librustdoc/html/markdown.rs
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@ -414,11 +414,13 @@ impl<'a, I: Iterator<Item = Event<'a>>> Iterator for LinkReplacer<'a, I> {
}
}
type SpannedEvent<'a> = (Event<'a>, Range<usize>);
/// Make headings links with anchor IDs and build up TOC.
struct HeadingLinks<'a, 'b, 'ids, I> {
inner: I,
toc: Option<&'b mut TocBuilder>,
buf: VecDeque<Event<'a>>,
buf: VecDeque<SpannedEvent<'a>>,
id_map: &'ids mut IdMap,
}
@ -428,8 +430,10 @@ impl<'a, 'b, 'ids, I> HeadingLinks<'a, 'b, 'ids, I> {
}
}
impl<'a, 'b, 'ids, I: Iterator<Item = Event<'a>>> Iterator for HeadingLinks<'a, 'b, 'ids, I> {
type Item = Event<'a>;
impl<'a, 'b, 'ids, I: Iterator<Item = SpannedEvent<'a>>> Iterator
for HeadingLinks<'a, 'b, 'ids, I>
{
type Item = SpannedEvent<'a>;
fn next(&mut self) -> Option<Self::Item> {
if let Some(e) = self.buf.pop_front() {
@ -437,31 +441,29 @@ impl<'a, 'b, 'ids, I: Iterator<Item = Event<'a>>> Iterator for HeadingLinks<'a,
}
let event = self.inner.next();
if let Some(Event::Start(Tag::Heading(level))) = event {
if let Some((Event::Start(Tag::Heading(level)), _)) = event {
let mut id = String::new();
for event in &mut self.inner {
match &event {
match &event.0 {
Event::End(Tag::Heading(..)) => break,
Event::Start(Tag::Link(_, _, _)) | Event::End(Tag::Link(..)) => {}
Event::Text(text) | Event::Code(text) => {
id.extend(text.chars().filter_map(slugify));
self.buf.push_back(event);
}
_ => {}
}
match event {
Event::Start(Tag::Link(_, _, _)) | Event::End(Tag::Link(..)) => {}
event => self.buf.push_back(event),
_ => self.buf.push_back(event),
}
}
let id = self.id_map.derive(id);
if let Some(ref mut builder) = self.toc {
let mut html_header = String::new();
html::push_html(&mut html_header, self.buf.iter().cloned());
html::push_html(&mut html_header, self.buf.iter().map(|(ev, _)| ev.clone()));
let sec = builder.push(level as u32, html_header, id.clone());
self.buf.push_front(Event::Html(format!("{} ", sec).into()));
self.buf.push_front((Event::Html(format!("{} ", sec).into()), 0..0));
}
self.buf.push_back(Event::Html(format!("</a></h{}>", level).into()));
self.buf.push_back((Event::Html(format!("</a></h{}>", level).into()), 0..0));
let start_tags = format!(
"<h{level} id=\"{id}\" class=\"section-header\">\
@ -469,7 +471,7 @@ impl<'a, 'b, 'ids, I: Iterator<Item = Event<'a>>> Iterator for HeadingLinks<'a,
id = id,
level = level
);
return Some(Event::Html(start_tags.into()));
return Some((Event::Html(start_tags.into()), 0..0));
}
event
}
@ -560,23 +562,23 @@ impl<'a, I> Footnotes<'a, I> {
}
}
impl<'a, I: Iterator<Item = Event<'a>>> Iterator for Footnotes<'a, I> {
type Item = Event<'a>;
impl<'a, I: Iterator<Item = SpannedEvent<'a>>> Iterator for Footnotes<'a, I> {
type Item = SpannedEvent<'a>;
fn next(&mut self) -> Option<Self::Item> {
loop {
match self.inner.next() {
Some(Event::FootnoteReference(ref reference)) => {
Some((Event::FootnoteReference(ref reference), range)) => {
let entry = self.get_entry(&reference);
let reference = format!(
"<sup id=\"fnref{0}\"><a href=\"#fn{0}\">{0}</a></sup>",
(*entry).1
);
return Some(Event::Html(reference.into()));
return Some((Event::Html(reference.into()), range));
}
Some(Event::Start(Tag::FootnoteDefinition(def))) => {
Some((Event::Start(Tag::FootnoteDefinition(def)), _)) => {
let mut content = Vec::new();
for event in &mut self.inner {
for (event, _) in &mut self.inner {
if let Event::End(Tag::FootnoteDefinition(..)) = event {
break;
}
@ -607,7 +609,7 @@ impl<'a, I: Iterator<Item = Event<'a>>> Iterator for Footnotes<'a, I> {
ret.push_str("</li>");
}
ret.push_str("</ol></div>");
return Some(Event::Html(ret.into()));
return Some((Event::Html(ret.into()), 0..0));
} else {
return None;
}
@ -917,13 +919,14 @@ impl Markdown<'_> {
};
let p = Parser::new_with_broken_link_callback(md, opts(), Some(&mut replacer));
let p = p.into_offset_iter();
let mut s = String::with_capacity(md.len() * 3 / 2);
let p = HeadingLinks::new(p, None, &mut ids);
let p = LinkReplacer::new(p, links);
let p = CodeBlocks::new(p, codes, edition, playground);
let p = Footnotes::new(p);
let p = LinkReplacer::new(p.map(|(ev, _)| ev), links);
let p = CodeBlocks::new(p, codes, edition, playground);
html::push_html(&mut s, p);
s
@ -934,7 +937,7 @@ impl MarkdownWithToc<'_> {
crate fn into_string(self) -> String {
let MarkdownWithToc(md, mut ids, codes, edition, playground) = self;
let p = Parser::new_ext(md, opts());
let p = Parser::new_ext(md, opts()).into_offset_iter();
let mut s = String::with_capacity(md.len() * 3 / 2);
@ -942,8 +945,8 @@ impl MarkdownWithToc<'_> {
{
let p = HeadingLinks::new(p, Some(&mut toc), &mut ids);
let p = CodeBlocks::new(p, codes, edition, playground);
let p = Footnotes::new(p);
let p = CodeBlocks::new(p.map(|(ev, _)| ev), codes, edition, playground);
html::push_html(&mut s, p);
}
@ -959,19 +962,19 @@ impl MarkdownHtml<'_> {
if md.is_empty() {
return String::new();
}
let p = Parser::new_ext(md, opts());
let p = Parser::new_ext(md, opts()).into_offset_iter();
// Treat inline HTML as plain text.
let p = p.map(|event| match event {
Event::Html(text) => Event::Text(text),
let p = p.map(|event| match event.0 {
Event::Html(text) => (Event::Text(text), event.1),
_ => event,
});
let mut s = String::with_capacity(md.len() * 3 / 2);
let p = HeadingLinks::new(p, None, &mut ids);
let p = CodeBlocks::new(p, codes, edition, playground);
let p = Footnotes::new(p);
let p = CodeBlocks::new(p.map(|(ev, _)| ev), codes, edition, playground);
html::push_html(&mut s, p);
s
@ -1153,7 +1156,8 @@ crate fn markdown_links(md: &str) -> Vec<(String, Option<Range<usize>>)> {
shortcut_links.push((link.reference.to_owned(), locate(link.reference)));
None
};
let p = Parser::new_with_broken_link_callback(md, opts(), Some(&mut push));
let p =
Parser::new_with_broken_link_callback(md, opts(), Some(&mut push)).into_offset_iter();
// There's no need to thread an IdMap through to here because
// the IDs generated aren't going to be emitted anywhere.
@ -1161,7 +1165,7 @@ crate fn markdown_links(md: &str) -> Vec<(String, Option<Range<usize>>)> {
let iter = Footnotes::new(HeadingLinks::new(p, None, &mut ids));
for ev in iter {
if let Event::Start(Tag::Link(_, dest, _)) = ev {
if let Event::Start(Tag::Link(_, dest, _)) = ev.0 {
debug!("found link: {}", dest);
links.push(match dest {
CowStr::Borrowed(s) => (s.to_owned(), locate(s)),