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rustdoc: refactor Tooltip rendering logic

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This commit is contained in:
binarycat 2025-05-26 11:35:45 -05:00
parent 4ef35bcaef
commit f9931d198c
1 changed files with 21 additions and 43 deletions
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64
src/librustdoc/html/highlight.rs
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@ -81,51 +81,29 @@ fn write_header(
);
if tooltip != Tooltip::None {
// variable for extending lifetimes of temporaries
let tmp;
write_str(
out,
format_args!(
"<a href=\"#\" class=\"tooltip\" title=\"{}\">ⓘ</a>",
match tooltip {
Tooltip::IgnoreAll => "This example is not tested",
Tooltip::IgnoreSome(platforms) => {
tmp = format!(
"This example is not tested on {}",
fmt::from_fn(|f| {
match platforms.len() {
0 => unreachable!(),
1 => f.write_str(&platforms[0]),
2 => write!(f, "{} or {}", &platforms[0], &platforms[1]),
_ => {
for (i, plat) in platforms.iter().enumerate() {
match (platforms.len() - 2).cmp(&i) {
std::cmp::Ordering::Greater => {
write!(f, "{}, ", plat)?
}
std::cmp::Ordering::Equal => {
write!(f, "{}, or ", plat)?
}
std::cmp::Ordering::Less => f.write_str(&plat)?,
}
}
Ok(())
}
}
})
);
&tmp
let tooltip = fmt::from_fn(|f| match &tooltip {
Tooltip::IgnoreAll => f.write_str("This example is not tested"),
Tooltip::IgnoreSome(platforms) => {
f.write_str("This example is not tested on ")?;
match &platforms[..] {
[] => unreachable!(),
[platform] => f.write_str(platform)?,
[first, second] => write!(f, "{first} or {second}")?,
[platforms @ .., last] => {
for platform in platforms {
write!(f, "{platform}, ")?;
}
write!(f, "or {last}")?;
}
Tooltip::CompileFail => "This example deliberately fails to compile",
Tooltip::ShouldPanic => "This example panics",
Tooltip::Edition(edition) => {
tmp = format!("This example runs with edition {edition}");
&tmp
}
Tooltip::None => unreachable!(),
}
),
);
Ok(())
}
Tooltip::CompileFail => f.write_str("This example deliberately fails to compile"),
Tooltip::ShouldPanic => f.write_str("This example panics"),
Tooltip::Edition(edition) => write!(f, "This example runs with edition {edition}"),
Tooltip::None => unreachable!(),
});
write_str(out, format_args!("<a href=\"#\" class=\"tooltip\" title=\"{tooltip}\">ⓘ</a>"));
}
if let Some(extra) = extra_content {