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Inline and remove Parser::parse_and_disallow_postfix_after_cast.

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It has a single call site. Removing it removes the need for an
`ExprKind` check. The commit also clarifies the relevant comment.
This commit is contained in:
Nicholas Nethercote 2024-07-16 16:02:45 +10:00
parent d247489ac2
commit 96cc9c99b2
1 changed files with 4 additions and 13 deletions
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17
compiler/rustc_parse/src/parser/expr.rs
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@ -785,19 +785,10 @@ impl<'a> Parser<'a> {
}
};
self.parse_and_disallow_postfix_after_cast(cast_expr)
}
/// Parses a postfix operators such as `.`, `?`, or index (`[]`) after a cast,
/// then emits an error and returns the newly parsed tree.
/// The resulting parse tree for `&x as T[0]` has a precedence of `((&x) as T)[0]`.
fn parse_and_disallow_postfix_after_cast(
&mut self,
cast_expr: P<Expr>,
) -> PResult<'a, P<Expr>> {
if let ExprKind::Type(_, _) = cast_expr.kind {
panic!("ExprKind::Type must not be parsed");
}
// Try to parse a postfix operator such as `.`, `?`, or index (`[]`)
// after a cast. If one is present, emit an error then return a valid
// parse tree; For something like `&x as T[0]` will be as if it was
// written `((&x) as T)[0]`.
let span = cast_expr.span;