bjoernager/rust
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implement SnapshotParser struct

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This commit is contained in:
Takayuki Maeda 2022-03-09 23:13:04 +09:00
parent 192acb4b98
commit 3ded25204b
2 changed files with 33 additions and 6 deletions
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6
compiler/rustc_parse/src/parser/path.rs
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@ -630,9 +630,9 @@ impl<'a> Parser<'a> {
Ok(ty) => GenericArg::Type(ty),
Err(err) => {
if is_const_fn {
if let Ok(expr) = snapshot.parse_expr_res(Restrictions::CONST_EXPR, None) {
snapshot.unclosed_delims.extend(self.unclosed_delims.clone());
*self = snapshot;
if let Ok(expr) = (*snapshot).parse_expr_res(Restrictions::CONST_EXPR, None)
{
self.restore(snapshot);
return Ok(Some(self.dummy_const_arg_needs_braces(err, expr.span)));
}
}