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
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19  */
20 /*
21  * $Id: NamespaceUriCall.java,v 1.2.4.1 2005/09/02 10:25:26 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.ConstantPoolGen;
29 import com.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE;
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 Morten Jorgensen
36  */
37 final class NamespaceUriCall extends NameBase {
38 
39     /**
40      * Handles calls with no parameter (current node is implicit parameter).
41      */
NamespaceUriCall(QName fname)42     public NamespaceUriCall(QName fname) {
43         super(fname);
44     }
45 
46     /**
47      * Handles calls with one parameter (either node or node-set).
48      */
NamespaceUriCall(QName fname, Vector arguments)49     public NamespaceUriCall(QName fname, Vector arguments) {
50         super(fname, arguments);
51     }
52 
53     /**
54      * Translate code that leaves a node's namespace URI (as a String)
55      * on the stack
56      */
translate(ClassGenerator classGen, MethodGenerator methodGen)57     public void translate(ClassGenerator classGen,
58                           MethodGenerator methodGen) {
59         final ConstantPoolGen cpg = classGen.getConstantPool();
60         final InstructionList il = methodGen.getInstructionList();
61 
62         // Returns the string value for a node in the DOM
63         final int getNamespace = cpg.addInterfaceMethodref(DOM_INTF,
64                                                            "getNamespaceName",
65                                                            "(I)"+STRING_SIG);
66         super.translate(classGen, methodGen);
67         il.append(new INVOKEINTERFACE(getNamespace, 2));
68     }
69 }
70