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Suggest removing let if let const is used

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This commit is contained in:
Obei Sideg 2022-08-03 18:45:26 +03:00
parent 2af92bbf2e
commit accb8e34c5
1 changed files with 16 additions and 0 deletions
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16
compiler/rustc_parse/src/parser/stmt.rs
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@ -247,6 +247,22 @@ impl<'a> Parser<'a> {
/// Parses a local variable declaration. /// Parses a local variable declaration.
fn parse_local(&mut self, attrs: AttrVec) -> PResult<'a, P<Local>> { fn parse_local(&mut self, attrs: AttrVec) -> PResult<'a, P<Local>> {
let lo = self.prev_token.span; let lo = self.prev_token.span;
if self.token.is_keyword(kw::Const) && self.look_ahead(1, |t| t.is_ident()) {
self.struct_span_err(
lo.to(self.token.span),
"`const` and `let` are mutually exclusive",
)
.span_suggestion(
lo.to(self.token.span),
"remove `let`",
"const",
Applicability::MaybeIncorrect,
)
.emit();
self.bump();
}
let (pat, colon) = self.parse_pat_before_ty(None, RecoverComma::Yes, "`let` bindings")?; let (pat, colon) = self.parse_pat_before_ty(None, RecoverComma::Yes, "`let` bindings")?;
let (err, ty) = if colon { let (err, ty) = if colon {