/*

 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

package com.sun.org.apache.bcel.internal.generic;

import java.io.*;

import com.sun.org.apache.bcel.internal.util.ByteSequence;

/**

 * JSR_W - Jump to subroutine

 *

 * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>

 */

public class JSR_W extends JsrInstruction {

  /**

   * Empty constructor needed for the Class.newInstance() statement in

   * Instruction.readInstruction(). Not to be used otherwise.

   */

  JSR_W() {}

  public JSR_W(InstructionHandle target) {

    super(com.sun.org.apache.bcel.internal.Constants.JSR_W, target);

    length = 5;

  }

  /**

   * Dump instruction as byte code to stream out.

   * @param out Output stream

   */

  public void dump(DataOutputStream out) throws IOException {

    index = getTargetOffset();

    out.writeByte(opcode);

    out.writeInt(index);

  }

  /**

   * Read needed data (e.g. index) from file.

   */

  protected void initFromFile(ByteSequence bytes, boolean wide) throws IOException

  {

    index = bytes.readInt();

    length = 5;

  }

  /**

   * Call corresponding visitor method(s). The order is:

   * Call visitor methods of implemented interfaces first, then

   * call methods according to the class hierarchy in descending order,

   * i.e., the most specific visitXXX() call comes last.

   *

   * @param v Visitor object

   */

  public void accept(Visitor v) {

    v.visitStackProducer(this);

    v.visitBranchInstruction(this);

    v.visitJsrInstruction(this);

    v.visitJSR_W(this);

  }

}