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1   /*
2    * Copyright  2000-2004 The Apache Software Foundation
3    *
4    *  Licensed under the Apache License, Version 2.0 (the "License"); 
5    *  you may not use this file except in compliance with the License.
6    *  You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   *  Unless required by applicable law or agreed to in writing, software
11   *  distributed under the License is distributed on an "AS IS" BASIS,
12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *  See the License for the specific language governing permissions and
14   *  limitations under the License. 
15   *
16   */ 
17  package org.apache.bcel.verifier.exc;
18  
19  /***
20   * Instances of this class are thrown by BCEL's class file verifier "JustIce" when
21   * a class file to verify does not pass the verification pass 3 because of a violation
22   * of a structural constraint as described in the Java Virtual Machine Specification,
23   * 2nd edition, 4.8.2, pages 137-139.
24   * Note that the notion of a "structural" constraint is somewhat misleading. Structural
25   * constraints are constraints on relationships between Java virtual machine instructions.
26   * These are the constraints where data-flow analysis is needed to verify if they hold.
27   * The data flow analysis of pass 3 is called pass 3b in JustIce.
28   *
29   * @version $Id: StructuralCodeConstraintException.java 371539 2006-01-23 14:08:00Z tcurdt $
30   * @author Enver Haase
31   */
32  public class StructuralCodeConstraintException extends CodeConstraintException{
33  	/***
34  	 * Constructs a new StructuralCodeConstraintException with the specified error message.
35  	 */
36  	public StructuralCodeConstraintException(String message){
37  		super(message);
38  	}
39  	/***
40  	 * Constructs a new StructuralCodeConstraintException with null as its error message string.
41  	 */
42  	public StructuralCodeConstraintException(){
43  		super();
44  	}
45  }