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Accept E<error_number> notation in doctests

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```compile_fail,E0000
```

The code was stolen from rustdoc at 392ba2ba1a/src/librustdoc/html/markdown.rs (L866-L867)
This commit is contained in:
Chayim Refael Friedman 2021-04-18 05:09:20 +03:00
parent 19fc1f333f
commit 6c287e1504
2 changed files with 23 additions and 5 deletions
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10
crates/ide/src/syntax_highlighting/inject.rs
View file

@ -90,6 +90,13 @@ const RUSTDOC_FENCE_TOKENS: &[&'static str] = &[
"edition2021",
];
fn is_rustdoc_fence_token(token: &str) -> bool {
if RUSTDOC_FENCE_TOKENS.contains(&token) {
return true;
}
token.starts_with('E') && token.len() == 5 && token[1..].parse::<u32>().is_ok()
}
/// Injection of syntax highlighting of doctests.
pub(super) fn doc_comment(
hl: &mut Highlights,
@ -174,8 +181,7 @@ pub(super) fn doc_comment(
is_codeblock = !is_codeblock;
// Check whether code is rust by inspecting fence guards
let guards = &line[idx + RUSTDOC_FENCE.len()..];
let is_rust =
guards.split(',').all(|sub| RUSTDOC_FENCE_TOKENS.contains(&sub.trim()));
let is_rust = guards.split(',').all(|sub| is_rustdoc_fence_token(sub.trim()));
is_doctest = is_codeblock && is_rust;
continue;
}