Implement RFC 3503: frontmatters

Supercedes #137193
2025-11-02 04:48:13 +00:00 · 2025-04-12 15:53:46 +00:00 · 2025-04-12 15:53:46 +00:00 · 9fce1dfac5
commit 9fce1dfac5
parent 39c198d823
5 changed files with 18 additions and 1 deletions
--- a/crates/parser/src/lexed_str.rs
+++ b/crates/parser/src/lexed_str.rs
@ -179,6 +179,15 @@ impl<'a> Converter<'a> {
                    COMMENT
                }

+                rustc_lexer::TokenKind::Frontmatter  { has_invalid_preceding_whitespace, invalid_infostring } => {
+                    if *has_invalid_preceding_whitespace {
+                        err = "invalid preceding whitespace for frontmatter opening"
+                    } else if *invalid_infostring {
+                        err = "invalid infostring for frontmatter"
+                    }
+                    FRONTMATTER
+                }
+
                rustc_lexer::TokenKind::Whitespace => WHITESPACE,

                rustc_lexer::TokenKind::Ident if token_text == "_" => UNDERSCORE,
--- a/crates/parser/src/syntax_kind/generated.rs
+++ b/crates/parser/src/syntax_kind/generated.rs