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Corrects issue #28777 by removing, once a binary operator is found, the

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RESTRICTION_STMT_EXPR restriction to allow subsequent expressions to
contain braces.

https://github.com/rust-lang/rust/issues/28777
This commit is contained in:
Aaron Keen
2015-12-14 21:32:16 +01:00
parent 6b3a3f2702
commit 35f2fe52c2
1 changed files with 15 additions and 6 deletions
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21
src/libsyntax/parse/parser.rs
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@@ -2813,16 +2813,25 @@ impl<'a> Parser<'a> {
let rhs = try!(match op.fixity() {
Fixity::Right => self.with_res(restrictions, |this|{
this.parse_assoc_expr_with(op.precedence(), LhsExpr::NotYetParsed)
Fixity::Right => self.with_res(
restrictions & !Restrictions::RESTRICTION_STMT_EXPR,
|this|{
this.parse_assoc_expr_with(op.precedence(),
LhsExpr::NotYetParsed)
}),
Fixity::Left => self.with_res(restrictions, |this|{
this.parse_assoc_expr_with(op.precedence() + 1, LhsExpr::NotYetParsed)
Fixity::Left => self.with_res(
restrictions & !Restrictions::RESTRICTION_STMT_EXPR,
|this|{
this.parse_assoc_expr_with(op.precedence() + 1,
LhsExpr::NotYetParsed)
}),
// We currently have no non-associative operators that are not handled above by
// the special cases. The code is here only for future convenience.
Fixity::None => self.with_res(restrictions, |this|{
this.parse_assoc_expr_with(op.precedence() + 1, LhsExpr::NotYetParsed)
Fixity::None => self.with_res(
restrictions & !Restrictions::RESTRICTION_STMT_EXPR,
|this|{
this.parse_assoc_expr_with(op.precedence() + 1,
LhsExpr::NotYetParsed)
}),
});