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fix #108495, postfix decrement and prefix decrement has no warning

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This commit is contained in:
nx2k3
2023-02-26 16:17:23 +00:00
parent 70fd012439
commit 46ea12a499
4 changed files with 214 additions and 7 deletions
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29
compiler/rustc_parse/src/parser/diagnostics.rs
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@@ -166,7 +166,7 @@ enum IsStandalone {
enum IncOrDec {
Inc,
// FIXME: `i--` recovery isn't implemented yet
#[allow(dead_code)]
// #[allow(dead_code)]
Dec,
}
@@ -1331,7 +1331,7 @@ impl<'a> Parser<'a> {
Ok(())
}
#[allow(dead_code)]
pub(super) fn recover_from_prefix_increment(
&mut self,
operand_expr: P<Expr>,
@@ -1342,7 +1342,7 @@ impl<'a> Parser<'a> {
let kind = IncDecRecovery { standalone, op: IncOrDec::Inc, fixity: UnaryFixity::Pre };
self.recover_from_inc_dec(operand_expr, kind, op_span)
}
#[allow(dead_code)]
pub(super) fn recover_from_postfix_increment(
&mut self,
operand_expr: P<Expr>,
@@ -1356,7 +1356,30 @@ impl<'a> Parser<'a> {
};
self.recover_from_inc_dec(operand_expr, kind, op_span)
}
pub(super) fn recover_from_prefix_decrement(
&mut self,
operand_expr: P<Expr>,
op_span: Span,
start_stmt: bool,
) -> PResult<'a, P<Expr>> {
let standalone = if start_stmt { IsStandalone::Standalone } else { IsStandalone::Subexpr };
let kind = IncDecRecovery { standalone, op: IncOrDec::Dec, fixity: UnaryFixity::Pre };
self.recover_from_inc_dec(operand_expr, kind, op_span)
}
pub(super) fn recover_from_postfix_decrement(
&mut self,
operand_expr: P<Expr>,
op_span: Span,
start_stmt: bool,
) -> PResult<'a, P<Expr>> {
let kind = IncDecRecovery {
standalone: if start_stmt { IsStandalone::Standalone } else { IsStandalone::Subexpr },
op: IncOrDec::Dec,
fixity: UnaryFixity::Post,
};
self.recover_from_inc_dec(operand_expr, kind, op_span)
}
fn recover_from_inc_dec(
&mut self,
base: P<Expr>,