1   package org.apache.bcel.generic;
2   
3   /* ====================================================================
4    * The Apache Software License, Version 1.1
5    *
6    * Copyright (c) 2001 The Apache Software Foundation.  All rights
7    * reserved.
8    *
9    * Redistribution and use in source and binary forms, with or without
10   * modification, are permitted provided that the following conditions
11   * are met:
12   *
13   * 1. Redistributions of source code must retain the above copyright
14   *    notice, this list of conditions and the following disclaimer.
15   *
16   * 2. Redistributions in binary form must reproduce the above copyright
17   *    notice, this list of conditions and the following disclaimer in
18   *    the documentation and/or other materials provided with the
19   *    distribution.
20   *
21   * 3. The end-user documentation included with the redistribution,
22   *    if any, must include the following acknowledgment:
23   *       "This product includes software developed by the
24   *        Apache Software Foundation (http://www.apache.org/)."
25   *    Alternately, this acknowledgment may appear in the software itself,
26   *    if and wherever such third-party acknowledgments normally appear.
27   *
28   * 4. The names "Apache" and "Apache Software Foundation" and
29   *    "Apache BCEL" must not be used to endorse or promote products
30   *    derived from this software without prior written permission. For
31   *    written permission, please contact apache@apache.org.
32   *
33   * 5. Products derived from this software may not be called "Apache",
34   *    "Apache BCEL", nor may "Apache" appear in their name, without
35   *    prior written permission of the Apache Software Foundation.
36   *
37   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48   * SUCH DAMAGE.
49   * ====================================================================
50   *
51   * This software consists of voluntary contributions made by many
52   * individuals on behalf of the Apache Software Foundation.  For more
53   * information on the Apache Software Foundation, please see
54   * <http://www.apache.org/>.
55   */
56  
57  /*** 
58   * IF_ICMPEQ - Branch if int comparison succeeds
59   *
60   * <PRE>Stack: ..., value1, value2 -> ...</PRE>
61   *
62   * @version $Id: IF_ICMPEQ.java,v 1.1.1.1 2001/10/29 20:00:15 jvanzyl Exp $
63   * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
64   */
65  public class IF_ICMPEQ extends IfInstruction {
66    /***
67     * Empty constructor needed for the Class.newInstance() statement in
68     * Instruction.readInstruction(). Not to be used otherwise.
69     */
70    IF_ICMPEQ() {}
71  
72    public IF_ICMPEQ(InstructionHandle target) {
73      super(org.apache.bcel.Constants.IF_ICMPEQ, target);
74    }
75  
76    /***
77     * @return negation of instruction
78     */
79    public IfInstruction negate() {
80      return new IF_ICMPNE(target);
81    }
82  
83  
84    /***
85     * Call corresponding visitor method(s). The order is:
86     * Call visitor methods of implemented interfaces first, then
87     * call methods according to the class hierarchy in descending order,
88     * i.e., the most specific visitXXX() call comes last.
89     *
90     * @param v Visitor object
91     */
92    public void accept(Visitor v) {
93      v.visitStackConsumer(this);
94      v.visitBranchInstruction(this);
95      v.visitIfInstruction(this);
96      v.visitIF_ICMPEQ(this);
97    }
98  }
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