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: ClassGenerator.java,v 1.2.4.1 2005/09/05 11:07:09 pvedula Exp $ 22 */ 23 24 package com.sun.org.apache.xalan.internal.xsltc.compiler.util; 25 26 import com.sun.org.apache.bcel.internal.classfile.Method; 27 import com.sun.org.apache.bcel.internal.generic.ALOAD; 28 import com.sun.org.apache.bcel.internal.generic.ClassGen; 29 import com.sun.org.apache.bcel.internal.generic.Instruction; 30 import com.sun.org.apache.xalan.internal.xsltc.compiler.Constants; 31 import com.sun.org.apache.xalan.internal.xsltc.compiler.Parser; 32 import com.sun.org.apache.xalan.internal.xsltc.compiler.Stylesheet; 33 34 /** 35 * The class that implements any class that inherits from 36 * <tt>AbstractTranslet</tt>, i.e. any translet. Methods in this 37 * class may be of the following kinds: 38 * 39 * 1. Main method: applyTemplates, implemented by intances of 40 * <tt>MethodGenerator</tt>. 41 * 42 * 2. Named methods: for named templates, implemented by instances 43 * of <tt>NamedMethodGenerator</tt>. 44 * 45 * 3. Rt methods: for result tree fragments, implemented by 46 * instances of <tt>RtMethodGenerator</tt>. 47 * @author Jacek Ambroziak 48 * @author Santiago Pericas-Geertsen 49 */ 50 public class ClassGenerator extends ClassGen { 51 protected final static int TRANSLET_INDEX = 0; 52 protected static int INVALID_INDEX = -1; 53 54 private Stylesheet _stylesheet; 55 private final Parser _parser; // --> can be moved to XSLT 56 // a single instance cached here 57 private final Instruction _aloadTranslet; 58 private final String _domClass; 59 private final String _domClassSig; 60 private final String _applyTemplatesSig; 61 private final String _applyTemplatesSigForImport; 62 63 public ClassGenerator(String class_name, String super_class_name, 64 String file_name, 65 int access_flags, String[] interfaces, 66 Stylesheet stylesheet) { 67 super(class_name, super_class_name, file_name, 68 access_flags, interfaces); 69 _stylesheet = stylesheet; 70 _parser = stylesheet.getParser(); 71 _aloadTranslet = new ALOAD(TRANSLET_INDEX); 72 73 if (stylesheet.isMultiDocument()) { 74 _domClass = "com.sun.org.apache.xalan.internal.xsltc.dom.MultiDOM"; 75 _domClassSig = "Lcom/sun/org/apache/xalan/internal/xsltc/dom/MultiDOM;"; 76 } 77 else { 78 _domClass = "com.sun.org.apache.xalan.internal.xsltc.dom.DOMAdapter"; 79 _domClassSig = "Lcom/sun/org/apache/xalan/internal/xsltc/dom/DOMAdapter;"; 80 } 81 _applyTemplatesSig = "(" 82 + Constants.DOM_INTF_SIG 83 + Constants.NODE_ITERATOR_SIG 84 + Constants.TRANSLET_OUTPUT_SIG 85 + ")V"; 86 87 _applyTemplatesSigForImport = "(" 88 + Constants.DOM_INTF_SIG 89 + Constants.NODE_ITERATOR_SIG 90 + Constants.TRANSLET_OUTPUT_SIG 91 + Constants.NODE_FIELD_SIG 92 + ")V"; 93 } 94 95 public final Parser getParser() { 96 return _parser; 97 } 98 99 public final Stylesheet getStylesheet() { 100 return _stylesheet; 101 } 102 103 /** 104 * Pretend this is the stylesheet class. Useful when compiling 105 * references to global variables inside a predicate. 106 */ 107 public final String getClassName() { 108 return _stylesheet.getClassName(); 109 } 110 111 public Instruction loadTranslet() { 112 return _aloadTranslet; 113 } 114 115 public final String getDOMClass() { 116 return _domClass; 117 } 118 119 public final String getDOMClassSig() { 120 return _domClassSig; 121 } 122 123 public final String getApplyTemplatesSig() { 124 return _applyTemplatesSig; 125 } 126 127 public final String getApplyTemplatesSigForImport() { 128 return _applyTemplatesSigForImport; 129 } 130 131 /** 132 * Returns <tt>true</tt> or <tt>false</tt> depending on whether 133 * this class inherits from <tt>AbstractTranslet</tt> or not. 134 */ 135 public boolean isExternal() { 136 return false; 137 } 138 public void addMethod(MethodGenerator methodGen) { 139 Method[] methodsToAdd = methodGen.getGeneratedMethods(this); 140 for (int i = 0; i < methodsToAdd.length; i++) { 141 addMethod(methodsToAdd[i]); 142 } 143 } 144 }