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