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Implement .use keyword as an alias of clone

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Santiago Pastorino 2024-10-02 16:35:37 -03:00
parent 0cf8dbc96c
commit 05c516446a
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GPG key ID: 8131A24E0C79EFAF
36 changed files with 247 additions and 24 deletions
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21
compiler/rustc_parse/src/parser/diagnostics.rs
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@ -38,8 +38,8 @@ use crate::errors::{
DoubleColonInBound, ExpectedIdentifier, ExpectedSemi, ExpectedSemiSugg,
GenericParamsWithoutAngleBrackets, GenericParamsWithoutAngleBracketsSugg,
HelpIdentifierStartsWithNumber, HelpUseLatestEdition, InInTypo, IncorrectAwait,
IncorrectSemicolon, IncorrectUseOfAwait, PatternMethodParamWithoutBody, QuestionMarkInType,
QuestionMarkInTypeSugg, SelfParamNotFirst, StructLiteralBodyWithoutPath,
IncorrectSemicolon, IncorrectUseOfAwait, IncorrectUseOfUse, PatternMethodParamWithoutBody,
QuestionMarkInType, QuestionMarkInTypeSugg, SelfParamNotFirst, StructLiteralBodyWithoutPath,
StructLiteralBodyWithoutPathSugg, StructLiteralNeedingParens, StructLiteralNeedingParensSugg,
SuggAddMissingLetStmt, SuggEscapeIdentifier, SuggRemoveComma, TernaryOperator,
UnexpectedConstInGenericParam, UnexpectedConstParamDeclaration,
@ -1991,7 +1991,7 @@ impl<'a> Parser<'a> {
self.parse_expr()
}
.map_err(|mut err| {
err.span_label(await_sp, "while parsing this incorrect await expression");
err.span_label(await_sp, format!("while parsing this incorrect await expression"));
err
})?;
Ok((expr.span, expr, is_question))
@ -2030,6 +2030,21 @@ impl<'a> Parser<'a> {
self.dcx().emit_err(IncorrectUseOfAwait { span });
}
}
///
/// If encountering `x.use()`, consumes and emits an error.
pub(super) fn recover_from_use(&mut self) {
if self.token == token::OpenDelim(Delimiter::Parenthesis)
&& self.look_ahead(1, |t| t == &token::CloseDelim(Delimiter::Parenthesis))
{
// var.use()
let lo = self.token.span;
self.bump(); // (
let span = lo.to(self.token.span);
self.bump(); // )
self.dcx().emit_err(IncorrectUseOfUse { span });
}
}
pub(super) fn try_macro_suggestion(&mut self) -> PResult<'a, P<Expr>> {
let is_try = self.token.is_keyword(kw::Try);