bjoernager/rust
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simplify similar_tokens from Vec<_> to &[_]

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This commit is contained in:
Marijn Schouten 2025-01-22 16:50:22 +01:00
parent ccb967438d
commit 5f01e12ea8
2 changed files with 8 additions and 8 deletions
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12
compiler/rustc_ast/src/token.rs
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@ -527,13 +527,13 @@ impl TokenKind {
/// Returns tokens that are likely to be typed accidentally instead of the current token. /// Returns tokens that are likely to be typed accidentally instead of the current token.
/// Enables better error recovery when the wrong token is found. /// Enables better error recovery when the wrong token is found.
pub fn similar_tokens(&self) -> Vec<TokenKind> { pub fn similar_tokens(&self) -> &[TokenKind] {
match self { match self {
Comma => vec![Dot, Lt, Semi], Comma => &[Dot, Lt, Semi],
Semi => vec![Colon, Comma], Semi => &[Colon, Comma],
Colon => vec![Semi], Colon => &[Semi],
FatArrow => vec![Eq, RArrow, Ge, Gt], FatArrow => &[Eq, RArrow, Ge, Gt],
_ => vec![], _ => &[],
} }
} }

4
compiler/rustc_parse/src/parser/expr.rs
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@ -3114,8 +3114,8 @@ impl<'a> Parser<'a> {
let span_before_body = this.prev_token.span; let span_before_body = this.prev_token.span;
let arm_body; let arm_body;
let is_fat_arrow = this.check(exp!(FatArrow)); let is_fat_arrow = this.check(exp!(FatArrow));
let is_almost_fat_arrow = TokenKind::FatArrow let is_almost_fat_arrow =
.similar_tokens().contains(&this.token.kind); TokenKind::FatArrow.similar_tokens().contains(&this.token.kind);
// this avoids the compiler saying that a `,` or `}` was expected even though // this avoids the compiler saying that a `,` or `}` was expected even though
// the pattern isn't a never pattern (and thus an arm body is required) // the pattern isn't a never pattern (and thus an arm body is required)