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 com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
  25 import com.sun.org.apache.bcel.internal.generic.InstructionList;
  26 import com.sun.org.apache.bcel.internal.generic.PUSH;
  27 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  28 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
  29 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
  30 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
  31 
  32 /**
  33  * @author Jacek Ambroziak
  34  * @author Santiago Pericas-Geertsen
  35  */
  36 final class SimpleAttributeValue extends AttributeValue {
  37 
  38     private String _value; // The attributes value (literate string).
  39 
  40     /**
  41      * Creates a new simple attribute value.
  42      * @param value the attribute value.
  43      */
  44     public SimpleAttributeValue(String value) {
  45         _value = value;
  46     }
  47 
  48     /**
  49      * Returns this attribute value's type (String).
  50      * @param stable The compiler/parser's symbol table
  51      */
  52     public Type typeCheck(SymbolTable stable) throws TypeCheckError {
  53         return _type = Type.String;
  54     }
  55 
  56     public String toString() {
  57         return _value;
  58     }
  59 
  60     protected boolean contextDependent() {
  61         return false;
  62     }
  63 
  64     /**
  65      * Translate this attribute value into JVM bytecodes that pushes the
  66      * attribute value onto the JVM's stack.
  67      * @param classGen BCEL Java class generator
  68      * @param methodGen BCEL Java method generator
  69      */
  70     public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
  71         final ConstantPoolGen cpg = classGen.getConstantPool();
  72         final InstructionList il = methodGen.getInstructionList();
  73         il.append(new PUSH(cpg, _value));
  74     }
  75 }