syntax: add fully qualified UFCS expressions.

1 files changed, 15 insertions, 3 deletions

diff --git a/src/libsyntax/visit.rs b/src/libsyntax/visit.rs
index 3f91304dcc5..7778b4fa34a 100644
--- a/src/libsyntax/visit.rs
+++ b/src/libsyntax/visit.rs
@@ -126,6 +126,9 @@ pub trait Visitor<'v> : Sized {
     fn visit_path(&mut self, path: &'v Path, _id: ast::NodeId) {
         walk_path(self, path)
     }
+    fn visit_qpath(&mut self, qpath_span: Span, qpath: &'v QPath) {
+        walk_qpath(self, qpath_span, qpath)
+    }
     fn visit_path_segment(&mut self, path_span: Span, path_segment: &'v PathSegment) {
         walk_path_segment(self, path_span, path_segment)
     }
@@ -419,9 +422,7 @@ pub fn walk_ty<'v, V: Visitor<'v>>(visitor: &mut V, typ: &'v Ty) {
             walk_ty_param_bounds_helper(visitor, bounds);
         }
         TyQPath(ref qpath) => {
-            visitor.visit_ty(&*qpath.self_type);
-            visitor.visit_trait_ref(&*qpath.trait_ref);
-            visitor.visit_ident(typ.span, qpath.item_name);
+            visitor.visit_qpath(typ.span, &**qpath);
         }
         TyFixedLengthVec(ref ty, ref expression) => {
             visitor.visit_ty(&**ty);
@@ -450,6 +451,14 @@ pub fn walk_path<'v, V: Visitor<'v>>(visitor: &mut V, path: &'v Path) {
     }
 }
 
+pub fn walk_qpath<'v, V: Visitor<'v>>(visitor: &mut V,
+                                      qpath_span: Span,
+                                      qpath: &'v QPath) {
+    visitor.visit_ty(&*qpath.self_type);
+    visitor.visit_trait_ref(&*qpath.trait_ref);
+    visitor.visit_path_segment(qpath_span, &qpath.item_path);
+}
+
 pub fn walk_path_segment<'v, V: Visitor<'v>>(visitor: &mut V,
                                              path_span: Span,
                                              segment: &'v PathSegment) {
@@ -881,6 +890,9 @@ pub fn walk_expr<'v, V: Visitor<'v>>(visitor: &mut V, expression: &'v Expr) {
         ExprPath(ref path) => {
             visitor.visit_path(path, expression.id)
         }
+        ExprQPath(ref qpath) => {
+            visitor.visit_qpath(expression.span, &**qpath)
+        }
         ExprBreak(_) | ExprAgain(_) => {}
         ExprRet(ref optional_expression) => {
             walk_expr_opt(visitor, optional_expression)