| /* |
| * Copyright 2009 Google Inc. |
| * |
| * 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. |
| */ |
| package com.google.gwt.dev.jjs.impl.gflow.cfg; |
| |
| import com.google.gwt.dev.jjs.ast.JNode; |
| import com.google.gwt.dev.util.collect.Lists; |
| |
| import java.util.List; |
| |
| /** |
| * Base class for nodes in CFG graph. |
| * |
| * @param <JNodeType> node's corresponding JNode type. |
| */ |
| public abstract class CfgNode<JNodeType extends JNode> { |
| List<CfgEdge> in = Lists.create(); |
| List<CfgEdge> out = Lists.create(); |
| private final JNodeType node; |
| private final CfgNode<?> parent; |
| |
| public CfgNode(CfgNode<?> parent, JNodeType node) { |
| this.parent = parent; |
| this.node = node; |
| } |
| |
| public abstract void accept(CfgVisitor visitor); |
| |
| @Override |
| public CfgNode<?> clone() { |
| return cloneImpl(); |
| } |
| |
| public JNodeType getJNode() { |
| return node; |
| } |
| |
| public CfgNode<?> getParent() { |
| return parent; |
| } |
| |
| /** |
| * @return debug string representation of the node. |
| */ |
| public abstract String toDebugString(); |
| |
| @Override |
| public String toString() { |
| return toDebugString(); |
| } |
| |
| /** |
| * @return node clone. |
| */ |
| protected abstract CfgNode<?> cloneImpl(); |
| } |