compiler-jx/src/main/java/org/apache/royale/compiler/internal/codegen/js/jx/SelfReferenceEmitter.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.codegen.js.jx;

import org.apache.royale.compiler.codegen.ISubEmitter;
import org.apache.royale.compiler.codegen.js.IJSEmitter;
import org.apache.royale.compiler.internal.codegen.as.ASEmitterTokens;
import org.apache.royale.compiler.internal.codegen.js.JSSubEmitter;
import org.apache.royale.compiler.internal.codegen.js.goog.JSGoogEmitterTokens;
import org.apache.royale.compiler.tree.as.IFunctionNode;

public class SelfReferenceEmitter extends JSSubEmitter implements
        ISubEmitter<IFunctionNode>
{

    public SelfReferenceEmitter(IJSEmitter emitter)
    {
        super(emitter);
    }

    @Override
    public void emit(IFunctionNode node)
    {
        // we don't want 'var self = this;' in Royale
        // unless there are anonymous functions
        if (node.containsLocalFunctions())
        {
            writeToken(ASEmitterTokens.VAR);
            writeToken(JSGoogEmitterTokens.SELF);
            writeToken(ASEmitterTokens.EQUAL);
            write(ASEmitterTokens.THIS);
            writeNewline(ASEmitterTokens.SEMICOLON);
        }
    }
}