compiler/src/main/java/org/apache/royale/compiler/internal/tree/mxml/MXMLBooleanNode.java

/*
 *
 *  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.royale.compiler.internal.tree.mxml;

import org.apache.royale.compiler.constants.IASLanguageConstants;
import org.apache.royale.compiler.internal.tree.as.NodeBase;
import org.apache.royale.compiler.mxml.IMXMLTagData;
import org.apache.royale.compiler.tree.ASTNodeID;
import org.apache.royale.compiler.tree.mxml.IMXMLBooleanNode;

class MXMLBooleanNode extends MXMLExpressionNodeBase implements IMXMLBooleanNode
{
    private static final Boolean DEFAULT = Boolean.FALSE;

    /**
     * Constructor
     * 
     * @param parent The parent node of this node, or <code>null</code> if there
     * is no parent.
     */
    MXMLBooleanNode(NodeBase parent)
    {
        super(parent);
    }

    @Override
    public ASTNodeID getNodeID()
    {
        return ASTNodeID.MXMLBooleanID;
    }

    @Override
    public String getName()
    {
        return IASLanguageConstants.Boolean;
    }

    @Override
    public boolean getValue()
    {
        assert getExpressionNode() == null || getExpressionNode() instanceof MXMLLiteralNode :
               "getValue() shouldn't be getting called on a non-literal MXMLBooleanNode";

        MXMLLiteralNode literalNode = (MXMLLiteralNode)getExpressionNode();
        return literalNode != null ? ((Boolean)literalNode.getValue()).booleanValue() : false;
    }

    @Override
    public ExpressionType getExpressionType()
    {
        return ExpressionType.BOOLEAN;
    }

    @Override
    protected void initializationComplete(MXMLTreeBuilder builder, IMXMLTagData tag,
                                          MXMLNodeInfo info)
    {
        NodeBase expressionNode = createExpressionNodeFromFragments(builder, tag, info, DEFAULT);
        setExpressionNode(expressionNode);

        super.initializationComplete(builder, tag, info);
    }
}