bjoernager/rust
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Add initial support for raw lifetimes

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This commit is contained in:
Michael Goulet 2024-09-05 05:43:55 -04:00
parent 3b3e43a386
commit 97910580aa
18 changed files with 116 additions and 40 deletions
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13
compiler/rustc_lexer/src/lib.rs
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@ -97,6 +97,9 @@ pub enum TokenKind {
/// and not the separator.
UnknownPrefixLifetime,
/// `'r#lt`, which in edition < 2021 is split into several tokens: `'r # lt`.
RawLifetime,
/// Similar to the above, but *always* an error on every edition. This is used
/// for emoji identifier recovery, as those are not meant to be ever accepted.
InvalidPrefix,
@ -683,9 +686,17 @@ impl Cursor<'_> {
return Literal { kind, suffix_start };
}
if self.first() == 'r' && self.second() == '#' && is_id_start(self.third()) {
// Eat "r" and `#`, and identifier start characters.
self.bump();
self.bump();
self.bump();
self.eat_while(is_id_continue);
return RawLifetime;
}
// Either a lifetime or a character literal with
// length greater than 1.
let starts_with_number = self.first().is_ascii_digit();
// Skip the literal contents.