diff options
Diffstat (limited to 'src/tools/rust-analyzer/crates/ide-db/src/rust_doc.rs')
-rw-r--r-- | src/tools/rust-analyzer/crates/ide-db/src/rust_doc.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/tools/rust-analyzer/crates/ide-db/src/rust_doc.rs b/src/tools/rust-analyzer/crates/ide-db/src/rust_doc.rs new file mode 100644 index 000000000..e27e23867 --- /dev/null +++ b/src/tools/rust-analyzer/crates/ide-db/src/rust_doc.rs @@ -0,0 +1,34 @@ +//! Rustdoc specific doc comment handling + +// stripped down version of https://github.com/rust-lang/rust/blob/392ba2ba1a7d6c542d2459fb8133bebf62a4a423/src/librustdoc/html/markdown.rs#L810-L933 +pub fn is_rust_fence(s: &str) -> bool { + let mut seen_rust_tags = false; + let mut seen_other_tags = false; + + let tokens = s + .trim() + .split(|c| c == ',' || c == ' ' || c == '\t') + .map(str::trim) + .filter(|t| !t.is_empty()); + + for token in tokens { + match token { + "should_panic" | "no_run" | "ignore" | "allow_fail" => { + seen_rust_tags = !seen_other_tags + } + "rust" => seen_rust_tags = true, + "test_harness" | "compile_fail" => seen_rust_tags = !seen_other_tags || seen_rust_tags, + x if x.starts_with("edition") => {} + x if x.starts_with('E') && x.len() == 5 => { + if x[1..].parse::<u32>().is_ok() { + seen_rust_tags = !seen_other_tags || seen_rust_tags; + } else { + seen_other_tags = true; + } + } + _ => seen_other_tags = true, + } + } + + !seen_other_tags || seen_rust_tags +} |