| // Copyright 2014 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // All Rights Reserved. |
| |
| package com.google.devtools.build.lib.graph; |
| |
| /** |
| * <p> A stub implementation of GraphVisitor providing default behaviour (do |
| * nothing) for all its methods. </p> |
| */ |
| public class AbstractGraphVisitor<T> implements GraphVisitor<T> { |
| @Override |
| public void beginVisit() {} |
| @Override |
| public void endVisit() {} |
| @Override |
| public void visitEdge(Node<T> lhs, Node<T> rhs) {} |
| @Override |
| public void visitNode(Node<T> node) {} |
| } |