Apply visit_path to import prefixes by default

Author: petrochenkov

src/librustc/hir/intravisit.rs

@@ -274,12 +274,9 @@ pub fn walk_item<'v, V: Visitor<'v>>(visitor: &mut V, item: &'v Item) {
                     visitor.visit_path(path, item.id);
                 }
                 ViewPathList(ref prefix, ref list) => {
-                    if !list.is_empty() {
-                        for item in list {
-                            visitor.visit_path_list_item(prefix, item)
-                        }
-                    } else {
-                        visitor.visit_path(prefix, item.id);
+                    visitor.visit_path(prefix, item.id);
+                    for item in list {
+                        visitor.visit_path_list_item(prefix, item)
                     }
                 }
             }
@@ -413,12 +410,8 @@ pub fn walk_path<'v, V: Visitor<'v>>(visitor: &mut V, path: &'v Path) {
 }
 
 pub fn walk_path_list_item<'v, V: Visitor<'v>>(visitor: &mut V,
-                                               prefix: &'v Path,
+                                               _prefix: &'v Path,
                                                item: &'v PathListItem) {
-    for segment in &prefix.segments {
-        visitor.visit_path_segment(prefix.span, segment);
-    }
-
     walk_opt_name(visitor, item.span, item.node.name());
     walk_opt_name(visitor, item.span, item.node.rename());
 }

src/librustc_incremental/calculate_svh.rs

@@ -401,10 +401,6 @@ mod svh_visitor {
             SawPath.hash(self.st); visit::walk_path(self, path)
         }
 
-        fn visit_path_list_item(&mut self, prefix: &'a Path, item: &'a PathListItem) {
-            SawPath.hash(self.st); visit::walk_path_list_item(self, prefix, item)
-        }
-
         fn visit_block(&mut self, b: &'a Block) {
             SawBlock.hash(self.st); visit::walk_block(self, b)
         }

src/libsyntax/visit.rs

@@ -247,12 +247,9 @@ pub fn walk_item<'v, V: Visitor<'v>>(visitor: &mut V, item: &'v Item) {
                     visitor.visit_path(path, item.id);
                 }
                 ViewPathList(ref prefix, ref list) => {
-                    if !list.is_empty() {
-                        for item in list {
-                            visitor.visit_path_list_item(prefix, item)
-                        }
-                    } else {
-                        visitor.visit_path(prefix, item.id);
+                    visitor.visit_path(prefix, item.id);
+                    for item in list {
+                        visitor.visit_path_list_item(prefix, item)
                     }
                 }
             }
@@ -382,12 +379,8 @@ pub fn walk_path<'v, V: Visitor<'v>>(visitor: &mut V, path: &'v Path) {
     }
 }
 
-pub fn walk_path_list_item<'v, V: Visitor<'v>>(visitor: &mut V, prefix: &'v Path,
+pub fn walk_path_list_item<'v, V: Visitor<'v>>(visitor: &mut V, _prefix: &'v Path,
                                                item: &'v PathListItem) {
-    for segment in &prefix.segments {
-        visitor.visit_path_segment(prefix.span, segment);
-    }
-
     walk_opt_ident(visitor, item.span, item.node.name());
     walk_opt_ident(visitor, item.span, item.node.rename());
 }