35 lines
1.2 KiB
Rust
35 lines
1.2 KiB
Rust
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//! Rustdoc specific doc comment handling
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// stripped down version of https://github.com/rust-lang/rust/blob/392ba2ba1a7d6c542d2459fb8133bebf62a4a423/src/librustdoc/html/markdown.rs#L810-L933
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pub fn is_rust_fence(s: &str) -> bool {
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let mut seen_rust_tags = false;
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let mut seen_other_tags = false;
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let tokens = s
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.trim()
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.split(|c| c == ',' || c == ' ' || c == '\t')
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.map(str::trim)
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.filter(|t| !t.is_empty());
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for token in tokens {
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match token {
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"should_panic" | "no_run" | "ignore" | "allow_fail" => {
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seen_rust_tags = !seen_other_tags
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}
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"rust" => seen_rust_tags = true,
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"test_harness" | "compile_fail" => seen_rust_tags = !seen_other_tags || seen_rust_tags,
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x if x.starts_with("edition") => {}
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x if x.starts_with('E') && x.len() == 5 => {
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if x[1..].parse::<u32>().is_ok() {
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seen_rust_tags = !seen_other_tags || seen_rust_tags;
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} else {
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seen_other_tags = true;
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}
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}
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_ => seen_other_tags = true,
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}
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}
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!seen_other_tags || seen_rust_tags
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}
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