| /* |
| * 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.JExpression; |
| import com.google.gwt.dev.jjs.ast.JNode; |
| |
| /** |
| * Base class for all conditional execution nodes. |
| * |
| * @param <JNodeType> corresponding AST type |
| */ |
| public abstract class CfgConditionalNode<JNodeType extends JNode> extends |
| CfgNode<JNodeType> { |
| /** |
| * Else edge role. |
| */ |
| public static final String ELSE = "ELSE"; |
| /** |
| * Then edge role. |
| */ |
| public static final String THEN = "THEN"; |
| |
| public CfgConditionalNode(CfgNode<?> parent, JNodeType node) { |
| super(parent, node); |
| } |
| |
| @Override |
| public void accept(CfgVisitor visitor) { |
| visitor.visitConditionalNode(this); |
| } |
| |
| /** |
| * Condition which is used to determine the branch. |
| */ |
| public abstract JExpression getCondition(); |
| |
| @Override |
| public String toDebugString() { |
| JExpression condition = getCondition(); |
| return "COND (" + (condition != null ? condition.toSource() : "") + ")"; |
| } |
| } |