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1   /*
2    * reserved comment block
3    * DO NOT REMOVE OR ALTER!
4    */
5   /*
6    * Copyright 2001-2004 The Apache Software Foundation.
7    *
8    * Licensed under the Apache License, Version 2.0 (the "License");
9    * you may not use this file except in compliance with the License.
10   * You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  /*
21   * $Id: NotCall.java,v 1.2.4.1 2005/09/02 10:32:18 pvedula Exp $
22   */
23  
24  package com.sun.org.apache.xalan.internal.xsltc.compiler;
25  
26  import java.util.Vector;
27  
28  import com.sun.org.apache.bcel.internal.generic.BranchHandle;
29  import com.sun.org.apache.bcel.internal.generic.GOTO;
30  import com.sun.org.apache.bcel.internal.generic.InstructionList;
31  import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
32  import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
33  
34  /**
35   * @author Jacek Ambroziak
36   * @author Santiago Pericas-Geertsen
37   */
38  final class NotCall extends FunctionCall {
39      public NotCall(QName fname, Vector arguments) {
40          super(fname, arguments);
41      }
42  
43      public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
44          final InstructionList il = methodGen.getInstructionList();
45          argument().translate(classGen, methodGen);
46          il.append(ICONST_1);
47          il.append(IXOR);
48      }
49  
50      public void translateDesynthesized(ClassGenerator classGen,
51                                         MethodGenerator methodGen) {
52          final InstructionList il = methodGen.getInstructionList();
53          final Expression exp = argument();
54          exp.translateDesynthesized(classGen, methodGen);
55          final BranchHandle gotoh = il.append(new GOTO(null));
56          _trueList = exp._falseList;     // swap flow lists
57          _falseList = exp._trueList;
58          _falseList.add(gotoh);
59      }
60  }