1 /*
   2  * reserved comment block
   3  * DO NOT REMOVE OR ALTER!
   4  */
   5 /*
   6  * Licensed to the Apache Software Foundation (ASF) under one or more
   7  * contributor license agreements.  See the NOTICE file distributed with
   8  * this work for additional information regarding copyright ownership.
   9  * The ASF licenses this file to You under the Apache License, Version 2.0
  10  * (the "License"); you may not use this file except in compliance with
  11  * the License.  You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  */
  21 
  22 package com.sun.org.apache.xalan.internal.xsltc.compiler;
  23 
  24 import java.util.Vector;
  25 
  26 import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
  27 import com.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE;
  28 import com.sun.org.apache.bcel.internal.generic.InstructionList;
  29 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  30 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
  31 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.StringType;
  32 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
  33 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
  34 
  35 /**
  36  * @author Jacek Ambroziak
  37  * @author Santiago Pericas-Geertsen
  38  * @author Morten Jorgensen
  39  */
  40 final class UnparsedEntityUriCall extends FunctionCall {
  41     private Expression _entity;
  42 
  43     public UnparsedEntityUriCall(QName fname, Vector arguments) {
  44         super(fname, arguments);
  45         _entity = argument();
  46     }
  47 
  48     public Type typeCheck(SymbolTable stable) throws TypeCheckError {
  49         final Type entity = _entity.typeCheck(stable);
  50         if (entity instanceof StringType == false) {
  51             _entity = new CastExpr(_entity, Type.String);
  52         }
  53         return _type = Type.String;
  54     }
  55 
  56     public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
  57         final ConstantPoolGen cpg = classGen.getConstantPool();
  58         final InstructionList il = methodGen.getInstructionList();
  59         // Feck the this pointer on the stack...
  60         il.append(methodGen.loadDOM());
  61         // ...then the entity name...
  62         _entity.translate(classGen, methodGen);
  63         // ...to get the URI from the DOM object.
  64         il.append(new INVOKEINTERFACE(
  65                          cpg.addInterfaceMethodref(DOM_INTF,
  66                                                    GET_UNPARSED_ENTITY_URI,
  67                                                    GET_UNPARSED_ENTITY_URI_SIG),
  68                          2));
  69     }
  70 }