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Java > Open Source Codes > org > apache > xalan > xsltc > compiler > NotCall


1 /*
2  * Copyright 2001-2004 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  * $Id: NotCall.java,v 1.5 2004/02/16 22:24:29 minchau Exp $
18  */
19
20 package org.apache.xalan.xsltc.compiler;
21
22 import java.util.Vector JavaDoc;
23
24 import org.apache.bcel.generic.BranchHandle;
25 import org.apache.bcel.generic.GOTO;
26 import org.apache.bcel.generic.InstructionList;
27 import org.apache.xalan.xsltc.compiler.util.ClassGenerator;
28 import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
29
30 /**
31  * @author Jacek Ambroziak
32  * @author Santiago Pericas-Geertsen
33  */
34 final class NotCall extends FunctionCall {
35     public NotCall(QName fname, Vector JavaDoc arguments) {
36     super(fname, arguments);
37     }
38
39     public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
40     final InstructionList il = methodGen.getInstructionList();
41     argument().translate(classGen, methodGen);
42     il.append(ICONST_1);
43     il.append(IXOR);
44     }
45
46     public void translateDesynthesized(ClassGenerator classGen,
47                        MethodGenerator methodGen) {
48     final InstructionList il = methodGen.getInstructionList();
49     final Expression exp = argument();
50     exp.translateDesynthesized(classGen, methodGen);
51     final BranchHandle gotoh = il.append(new GOTO(null));
52     _trueList = exp._falseList; // swap flow lists
53 _falseList = exp._trueList;
54     _falseList.add(gotoh);
55     }
56 }
57
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