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<FONT color="green">001</FONT> /*<a name="line.1"></a>
<FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a>
<FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the "License");<a name="line.6"></a>
<FONT color="green">007</FONT> * you may not use this file except in compliance with the License.<a name="line.7"></a>
<FONT color="green">008</FONT> * You may obtain a copy of the License at<a name="line.8"></a>
<FONT color="green">009</FONT> *<a name="line.9"></a>
<FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<FONT color="green">011</FONT> *<a name="line.11"></a>
<FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<FONT color="green">013</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<FONT color="green">014</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<FONT color="green">015</FONT> * See the License for the specific language governing permissions and<a name="line.15"></a>
<FONT color="green">016</FONT> * limitations under the License.<a name="line.16"></a>
<FONT color="green">017</FONT> */<a name="line.17"></a>
<FONT color="green">018</FONT> /*<a name="line.18"></a>
<FONT color="green">019</FONT> * $Id: CompareGenerator.java 468649 2006-10-28 07:00:55Z minchau $<a name="line.19"></a>
<FONT color="green">020</FONT> */<a name="line.20"></a>
<FONT color="green">021</FONT> <a name="line.21"></a>
<FONT color="green">022</FONT> package org.apache.xalan.xsltc.compiler.util;<a name="line.22"></a>
<FONT color="green">023</FONT> <a name="line.23"></a>
<FONT color="green">024</FONT> import org.apache.bcel.generic.ACONST_NULL;<a name="line.24"></a>
<FONT color="green">025</FONT> import org.apache.bcel.generic.ALOAD;<a name="line.25"></a>
<FONT color="green">026</FONT> import org.apache.bcel.generic.ASTORE;<a name="line.26"></a>
<FONT color="green">027</FONT> import org.apache.bcel.generic.ConstantPoolGen;<a name="line.27"></a>
<FONT color="green">028</FONT> import org.apache.bcel.generic.ILOAD;<a name="line.28"></a>
<FONT color="green">029</FONT> import org.apache.bcel.generic.ISTORE;<a name="line.29"></a>
<FONT color="green">030</FONT> import org.apache.bcel.generic.Instruction;<a name="line.30"></a>
<FONT color="green">031</FONT> import org.apache.bcel.generic.InstructionList;<a name="line.31"></a>
<FONT color="green">032</FONT> import org.apache.bcel.generic.LocalVariableGen;<a name="line.32"></a>
<FONT color="green">033</FONT> import org.apache.bcel.generic.Type;<a name="line.33"></a>
<FONT color="green">034</FONT> import org.apache.xalan.xsltc.compiler.Constants;<a name="line.34"></a>
<FONT color="green">035</FONT> <a name="line.35"></a>
<FONT color="green">036</FONT> /**<a name="line.36"></a>
<FONT color="green">037</FONT> * @author Jacek Ambroziak<a name="line.37"></a>
<FONT color="green">038</FONT> * @author Santiago Pericas-Geertsen<a name="line.38"></a>
<FONT color="green">039</FONT> */<a name="line.39"></a>
<FONT color="green">040</FONT> public final class CompareGenerator extends MethodGenerator {<a name="line.40"></a>
<FONT color="green">041</FONT> <a name="line.41"></a>
<FONT color="green">042</FONT> private static int DOM_INDEX = 1;<a name="line.42"></a>
<FONT color="green">043</FONT> private static int CURRENT_INDEX = 2;<a name="line.43"></a>
<FONT color="green">044</FONT> private static int LEVEL_INDEX = 3;<a name="line.44"></a>
<FONT color="green">045</FONT> private static int TRANSLET_INDEX = 4;<a name="line.45"></a>
<FONT color="green">046</FONT> private static int LAST_INDEX = 5;<a name="line.46"></a>
<FONT color="green">047</FONT> private int ITERATOR_INDEX = 6;<a name="line.47"></a>
<FONT color="green">048</FONT> <a name="line.48"></a>
<FONT color="green">049</FONT> private final Instruction _iloadCurrent;<a name="line.49"></a>
<FONT color="green">050</FONT> private final Instruction _istoreCurrent;<a name="line.50"></a>
<FONT color="green">051</FONT> private final Instruction _aloadDom;<a name="line.51"></a>
<FONT color="green">052</FONT> private final Instruction _iloadLast;<a name="line.52"></a>
<FONT color="green">053</FONT> private final Instruction _aloadIterator;<a name="line.53"></a>
<FONT color="green">054</FONT> private final Instruction _astoreIterator;<a name="line.54"></a>
<FONT color="green">055</FONT> <a name="line.55"></a>
<FONT color="green">056</FONT> public CompareGenerator(int access_flags, Type return_type,<a name="line.56"></a>
<FONT color="green">057</FONT> Type[] arg_types, String[] arg_names,<a name="line.57"></a>
<FONT color="green">058</FONT> String method_name, String class_name,<a name="line.58"></a>
<FONT color="green">059</FONT> InstructionList il, ConstantPoolGen cp) {<a name="line.59"></a>
<FONT color="green">060</FONT> super(access_flags, return_type, arg_types, arg_names, method_name, <a name="line.60"></a>
<FONT color="green">061</FONT> class_name, il, cp);<a name="line.61"></a>
<FONT color="green">062</FONT> <a name="line.62"></a>
<FONT color="green">063</FONT> _iloadCurrent = new ILOAD(CURRENT_INDEX);<a name="line.63"></a>
<FONT color="green">064</FONT> _istoreCurrent = new ISTORE(CURRENT_INDEX);<a name="line.64"></a>
<FONT color="green">065</FONT> _aloadDom = new ALOAD(DOM_INDEX);<a name="line.65"></a>
<FONT color="green">066</FONT> _iloadLast = new ILOAD(LAST_INDEX);<a name="line.66"></a>
<FONT color="green">067</FONT> <a name="line.67"></a>
<FONT color="green">068</FONT> LocalVariableGen iterator =<a name="line.68"></a>
<FONT color="green">069</FONT> addLocalVariable("iterator",<a name="line.69"></a>
<FONT color="green">070</FONT> Util.getJCRefType(Constants.NODE_ITERATOR_SIG),<a name="line.70"></a>
<FONT color="green">071</FONT> null, null);<a name="line.71"></a>
<FONT color="green">072</FONT> ITERATOR_INDEX = iterator.getIndex();<a name="line.72"></a>
<FONT color="green">073</FONT> _aloadIterator = new ALOAD(ITERATOR_INDEX);<a name="line.73"></a>
<FONT color="green">074</FONT> _astoreIterator = new ASTORE(ITERATOR_INDEX);<a name="line.74"></a>
<FONT color="green">075</FONT> il.append(new ACONST_NULL());<a name="line.75"></a>
<FONT color="green">076</FONT> il.append(storeIterator());<a name="line.76"></a>
<FONT color="green">077</FONT> }<a name="line.77"></a>
<FONT color="green">078</FONT> <a name="line.78"></a>
<FONT color="green">079</FONT> public Instruction loadLastNode() {<a name="line.79"></a>
<FONT color="green">080</FONT> return _iloadLast;<a name="line.80"></a>
<FONT color="green">081</FONT> }<a name="line.81"></a>
<FONT color="green">082</FONT> <a name="line.82"></a>
<FONT color="green">083</FONT> public Instruction loadCurrentNode() {<a name="line.83"></a>
<FONT color="green">084</FONT> return _iloadCurrent;<a name="line.84"></a>
<FONT color="green">085</FONT> }<a name="line.85"></a>
<FONT color="green">086</FONT> <a name="line.86"></a>
<FONT color="green">087</FONT> public Instruction storeCurrentNode() {<a name="line.87"></a>
<FONT color="green">088</FONT> return _istoreCurrent;<a name="line.88"></a>
<FONT color="green">089</FONT> }<a name="line.89"></a>
<FONT color="green">090</FONT> <a name="line.90"></a>
<FONT color="green">091</FONT> public Instruction loadDOM() {<a name="line.91"></a>
<FONT color="green">092</FONT> return _aloadDom;<a name="line.92"></a>
<FONT color="green">093</FONT> }<a name="line.93"></a>
<FONT color="green">094</FONT> <a name="line.94"></a>
<FONT color="green">095</FONT> public int getHandlerIndex() {<a name="line.95"></a>
<FONT color="green">096</FONT> return INVALID_INDEX; // not available<a name="line.96"></a>
<FONT color="green">097</FONT> }<a name="line.97"></a>
<FONT color="green">098</FONT> <a name="line.98"></a>
<FONT color="green">099</FONT> public int getIteratorIndex() {<a name="line.99"></a>
<FONT color="green">100</FONT> return INVALID_INDEX;<a name="line.100"></a>
<FONT color="green">101</FONT> }<a name="line.101"></a>
<FONT color="green">102</FONT> <a name="line.102"></a>
<FONT color="green">103</FONT> public Instruction storeIterator() {<a name="line.103"></a>
<FONT color="green">104</FONT> return _astoreIterator;<a name="line.104"></a>
<FONT color="green">105</FONT> }<a name="line.105"></a>
<FONT color="green">106</FONT> <a name="line.106"></a>
<FONT color="green">107</FONT> public Instruction loadIterator() {<a name="line.107"></a>
<FONT color="green">108</FONT> return _aloadIterator;<a name="line.108"></a>
<FONT color="green">109</FONT> }<a name="line.109"></a>
<FONT color="green">110</FONT> <a name="line.110"></a>
<FONT color="green">111</FONT> //??? may not be used anymore<a name="line.111"></a>
<FONT color="green">112</FONT> public int getLocalIndex(String name) {<a name="line.112"></a>
<FONT color="green">113</FONT> if (name.equals("current")) {<a name="line.113"></a>
<FONT color="green">114</FONT> return CURRENT_INDEX;<a name="line.114"></a>
<FONT color="green">115</FONT> }<a name="line.115"></a>
<FONT color="green">116</FONT> return super.getLocalIndex(name);<a name="line.116"></a>
<FONT color="green">117</FONT> }<a name="line.117"></a>
<FONT color="green">118</FONT> }<a name="line.118"></a>
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