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


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: LocalNameCall.java,v 1.6 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.ConstantPoolGen;
25 import org.apache.bcel.generic.INVOKEINTERFACE;
26 import org.apache.bcel.generic.INVOKESTATIC;
27 import org.apache.bcel.generic.InstructionList;
28 import org.apache.xalan.xsltc.compiler.util.ClassGenerator;
29 import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
30
31 /**
32  * @author Morten Jorgensen
33  */
34 final class LocalNameCall extends NameBase {
35
36     /**
37      * Handles calls with no parameter (current node is implicit parameter).
38      */
39     public LocalNameCall(QName fname) {
40     super(fname);
41     }
42
43     /**
44      * Handles calls with one parameter (either node or node-set).
45      */
46     public LocalNameCall(QName fname, Vector JavaDoc arguments) {
47     super(fname, arguments);
48     }
49
50     /**
51      * This method is called when the constructor is compiled in
52      * Stylesheet.compileConstructor() and not as the syntax tree is traversed.
53      */
54     public void translate(ClassGenerator classGen,
55               MethodGenerator methodGen) {
56     final ConstantPoolGen cpg = classGen.getConstantPool();
57     final InstructionList il = methodGen.getInstructionList();
58
59     // Returns the name of a node in the DOM
60 final int getNodeName = cpg.addInterfaceMethodref(DOM_INTF,
61                               "getNodeName",
62                               "(I)"+STRING_SIG);
63
64     final int getLocalName = cpg.addMethodref(BASIS_LIBRARY_CLASS,
65                           "getLocalName",
66                           "(Ljava/lang/String;)"+
67                           "Ljava/lang/String;");
68     super.translate(classGen, methodGen);
69     il.append(new INVOKEINTERFACE(getNodeName, 2));
70     il.append(new INVOKESTATIC(getLocalName));
71     }
72 }
73
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