001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License. 
016     *
017     */
018    package org.apache.bcel.generic;
019    
020    import java.io.IOException;
021    import org.apache.bcel.util.ByteSequence;
022    
023    /** 
024     * LDC_W - Push item from constant pool (wide index)
025     *
026     * <PRE>Stack: ... -&gt; ..., item.word1, item.word2</PRE>
027     *
028     * @version $Id: LDC_W.java 1152072 2011-07-29 01:54:05Z dbrosius $
029     * @author  <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
030     */
031    public class LDC_W extends LDC {
032    
033        private static final long serialVersionUID = -8040188785844554411L;
034    
035    
036        /**
037         * Empty constructor needed for the Class.newInstance() statement in
038         * Instruction.readInstruction(). Not to be used otherwise.
039         */
040        LDC_W() {
041        }
042    
043    
044        public LDC_W(int index) {
045            super(index);
046        }
047    
048    
049        /**
050         * Read needed data (i.e., index) from file.
051         */
052        @Override
053        protected void initFromFile( ByteSequence bytes, boolean wide ) throws IOException {
054            setIndex(bytes.readUnsignedShort());
055            // Override just in case it has been changed
056            opcode = org.apache.bcel.Constants.LDC_W;
057            length = 3;
058        }
059    }