/*
 * Copyright  2000-2004 The Apache Software Foundation
 *
 *  Licensed 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.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>
 * 
 * @version $Id: LDC_W.java 386056 2006-03-15 11:31:56Z tcurdt $
 * @author <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
 */
public class LDC_W extends LDC {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * Empty constructor needed for the Class.newInstance() statement in
	 * Instruction.readInstruction(). Not to be used otherwise.
	 */
	LDC_W() {
	}

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

	/**
	 * Read needed data (i.e., index) from file.
	 */
	@Override
	protected void initFromFile(ByteSequence bytes, boolean wide)
			throws IOException {
		setIndex(bytes.readUnsignedShort());
		// Override just in case it has been changed
		opcode = org.apache.bcel.Constants.LDC_W;
		length = 3;
	}
}
