bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Fix regression in parsing of trait object types

Browse source
This commit is contained in:
Vadim Petrochenkov 2017-01-19 13:28:45 +03:00
parent 74c42ac173
commit 853f697476
2 changed files with 24 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

11
src/libsyntax/parse/parser.rs
View file

@ -1277,10 +1277,17 @@ impl<'a> Parser<'a> {
"at least one type parameter bound \
must be specified");
}
if let TyKind::Path(None, ref path) = lhs.node {
let mut lhs = lhs.unwrap();
if let TyKind::Paren(ty) = lhs.node {
// We have to accept the first bound in parens for backward compatibility.
// Example: `(Bound) + Bound + Bound`
lhs = ty.unwrap();
}
if let TyKind::Path(None, path) = lhs.node {
let poly_trait_ref = PolyTraitRef {
bound_lifetimes: Vec::new(),
trait_ref: TraitRef { path: path.clone(), ref_id: lhs.id },
trait_ref: TraitRef { path: path, ref_id: lhs.id },
span: lhs.span,
};
let poly_trait_ref = TraitTyParamBound(poly_trait_ref, TraitBoundModifier::None);