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: UnparsedEntityUriCall.java,v 1.2.4.1 2005/09/05 09:22:36 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 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.StringType;
34 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
35 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
36 
37 /**
38  * @author Jacek Ambroziak
39  * @author Santiago Pericas-Geertsen
40  * @author Morten Jorgensen
41  */
42 final class UnparsedEntityUriCall extends FunctionCall {
43     private Expression _entity;
44 
UnparsedEntityUriCall(QName fname, Vector arguments)45     public UnparsedEntityUriCall(QName fname, Vector arguments) {
46         super(fname, arguments);
47         _entity = argument();
48     }
49 
typeCheck(SymbolTable stable)50     public Type typeCheck(SymbolTable stable) throws TypeCheckError {
51         final Type entity = _entity.typeCheck(stable);
52         if (entity instanceof StringType == false) {
53             _entity = new CastExpr(_entity, Type.String);
54         }
55         return _type = Type.String;
56     }
57 
translate(ClassGenerator classGen, MethodGenerator methodGen)58     public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
59         final ConstantPoolGen cpg = classGen.getConstantPool();
60         final InstructionList il = methodGen.getInstructionList();
61         // Feck the this pointer on the stack...
62         il.append(methodGen.loadDOM());
63         // ...then the entity name...
64         _entity.translate(classGen, methodGen);
65         // ...to get the URI from the DOM object.
66         il.append(new INVOKEINTERFACE(
67                          cpg.addInterfaceMethodref(DOM_INTF,
68                                                    GET_UNPARSED_ENTITY_URI,
69                                                    GET_UNPARSED_ENTITY_URI_SIG),
70                          2));
71     }
72 }
73