/*
 * 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
 *
 *   https://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.bcel.generic;

import java.io.IOException;

import org.apache.bcel.util.ByteSequence;

/**
 * LDC_W - Push item from constant pool (wide index)
 *
 * <PRE>
 * Stack: ... -&gt; ..., item.word1, item.word2
 * </PRE>
 */
public class LDC_W extends LDC {

    /**
     * Empty constructor needed for Instruction.readInstruction. Not to be used otherwise.
     */
    LDC_W() {
    }

    public LDC_W(final int index) {
        super(index);
    }

    /**
     * Reads needed data (that is, index) from file.
     */
    @Override
    protected void initFromFile(final ByteSequence bytes, final boolean wide) throws IOException {
        setIndex(bytes.readUnsignedShort());
        // Override just in case it has been changed
        super.setOpcode(org.apache.bcel.Const.LDC_W);
        super.setLength(3);
    }
}
