/*
* 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() : "") + ")";
}
}