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Implement RFC 3503: frontmatters

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Supercedes #137193
This commit is contained in:
Deadbeef 2025-04-12 15:53:46 +00:00
parent 39c198d823
commit 9fce1dfac5
5 changed files with 18 additions and 1 deletions
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9
crates/parser/src/lexed_str.rs
View file

@ -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,

4
crates/parser/src/syntax_kind/generated.rs
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File diff suppressed because one or more lines are too long

1
crates/syntax/rust.ungram
View file

@ -133,6 +133,7 @@ Meta =
SourceFile =
'#shebang'?
'#frontmatter'?
Attr*
Item*

4
crates/syntax/src/ast/generated/nodes.rs
View file

@ -1524,6 +1524,10 @@ impl ast::HasAttrs for SourceFile {}
impl ast::HasDocComments for SourceFile {}
impl ast::HasModuleItem for SourceFile {}
impl SourceFile {
#[inline]
pub fn frontmatter_token(&self) -> Option<SyntaxToken> {
support::token(&self.syntax, T![frontmatter])
}
#[inline]
pub fn shebang_token(&self) -> Option<SyntaxToken> { support::token(&self.syntax, T![shebang]) }
}

1
xtask/src/codegen/grammar.rs
View file

@ -670,6 +670,7 @@ fn generate_syntax_kinds(grammar: KindsSrc) -> String {
[ident] => { $crate::SyntaxKind::IDENT };
[string] => { $crate::SyntaxKind::STRING };
[shebang] => { $crate::SyntaxKind::SHEBANG };
[frontmatter] => { $crate::SyntaxKind::FRONTMATTER };
}
impl ::core::marker::Copy for SyntaxKind {}