/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.flex.compiler.internal.tree.as;
import org.apache.flex.compiler.internal.parsing.as.ASTokenTypes;
import org.apache.flex.compiler.parsing.IASToken;
import org.apache.flex.compiler.tree.ASTNodeID;
import org.apache.flex.compiler.tree.as.IASNode;
import org.apache.flex.compiler.tree.as.IIdentifierNode;
import org.apache.flex.compiler.tree.as.IIterationFlowNode;
/**
* Represents a statement that changes the flow within an iterative statement.
* This node can either represent a break or a continue statement.
*/
public class IterationFlowNode extends FixedChildrenNode implements IIterationFlowNode
{
/**
* Constructor.
*/
public IterationFlowNode(IASToken token)
{
if (token != null)
{
startBefore(token);
switch (token.getType())
{
case ASTokenTypes.TOKEN_KEYWORD_BREAK:
{
kind = IterationFlowKind.BREAK;
break;
}
case ASTokenTypes.TOKEN_KEYWORD_CONTINUE:
{
kind = IterationFlowKind.CONTINUE;
break;
}
case ASTokenTypes.TOKEN_RESERVED_WORD_GOTO:
{
kind = IterationFlowKind.GOTO;
}
}
endAfter(token);
}
}
private IdentifierNode labelNode;
private IterationFlowKind kind;
//
// NodeBase overrides
//
@Override
public ASTNodeID getNodeID()
{
switch (kind)
{
case BREAK:
return ASTNodeID.BreakID;
case CONTINUE:
return ASTNodeID.ContinueID;
case GOTO:
return ASTNodeID.GotoID;
}
assert false : "Unknown control flow type!";
return ASTNodeID.UnknownID;
}
@Override
public int getChildCount()
{
return labelNode != null ? 1 : 0;
}
@Override
public IASNode getChild(int i)
{
if (i == 0)
return labelNode;
return null;
}
//
// IIterationFlowNode implementations
//
@Override
public IterationFlowKind getKind()
{
return kind;
}
@Override
public IIdentifierNode getLabelNode()
{
return labelNode;
}
//
// Other methods
//
public void setLabel(IdentifierNode labelNode)
{
this.labelNode = labelNode;
labelNode.setParent(this);
endAfter(labelNode);
}
}