/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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 * Version 2] license."  If you don't indicate a single choice of license, a
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package com.sun.jdo.api.persistence.enhancer.classfile;

import java.io.PrintStream;

/**
 * InsnTarget is a pseudo-instruction which represents a branch target
 * in an instruction stream.
 */

public class InsnTarget extends Insn {

  private boolean branchTarget = false;

  public int nStackArgs() {
    return 0;
  }

  public int nStackResults() {
    return 0;
  }

  public String argTypes() {
      return "";//NOI18N
  }

  public String resultTypes() {
      return "";//NOI18N
  }

  public boolean branches() {
    return false;
  }

  public void setBranchTarget() {
    branchTarget = true;
  }

  /* not valid unless method instructions processed specially */
  public boolean isBranchTarget() {
    return branchTarget;
  }

  /**
   * Constructor
   */
  public InsnTarget() {
    super(opc_target, NO_OFFSET);
  }

  /* package local methods */

  void print (PrintStream out, int indent) {
    ClassPrint.spaces(out, indent);
    out.println(offset() + ":");//NOI18N
  }

  int store(byte buf[], int index) {
    return index;
  }

  int size() {
    return 0;
  }

  InsnTarget(int offset) {
    super(opc_target, offset);
  }

}