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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: Copy.java 468650 2006-10-28 07:03:30Z 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;<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.ALOAD;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.bcel.generic.ASTORE;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.bcel.generic.BranchHandle;<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.IFEQ;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.bcel.generic.IFNULL;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.bcel.generic.ILOAD;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.bcel.generic.INVOKEINTERFACE;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.apache.bcel.generic.INVOKEVIRTUAL;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.apache.bcel.generic.ISTORE;<a name="line.33"></a> |
| <FONT color="green">034</FONT> import org.apache.bcel.generic.InstructionHandle;<a name="line.34"></a> |
| <FONT color="green">035</FONT> import org.apache.bcel.generic.InstructionList;<a name="line.35"></a> |
| <FONT color="green">036</FONT> import org.apache.bcel.generic.LocalVariableGen;<a name="line.36"></a> |
| <FONT color="green">037</FONT> import org.apache.xalan.xsltc.compiler.util.ClassGenerator;<a name="line.37"></a> |
| <FONT color="green">038</FONT> import org.apache.xalan.xsltc.compiler.util.ErrorMsg;<a name="line.38"></a> |
| <FONT color="green">039</FONT> import org.apache.xalan.xsltc.compiler.util.MethodGenerator;<a name="line.39"></a> |
| <FONT color="green">040</FONT> import org.apache.xalan.xsltc.compiler.util.Type;<a name="line.40"></a> |
| <FONT color="green">041</FONT> import org.apache.xalan.xsltc.compiler.util.TypeCheckError;<a name="line.41"></a> |
| <FONT color="green">042</FONT> import org.apache.xalan.xsltc.compiler.util.Util;<a name="line.42"></a> |
| <FONT color="green">043</FONT> <a name="line.43"></a> |
| <FONT color="green">044</FONT> /**<a name="line.44"></a> |
| <FONT color="green">045</FONT> * @author Jacek Ambroziak<a name="line.45"></a> |
| <FONT color="green">046</FONT> * @author Santiago Pericas-Geertsen<a name="line.46"></a> |
| <FONT color="green">047</FONT> */<a name="line.47"></a> |
| <FONT color="green">048</FONT> final class Copy extends Instruction {<a name="line.48"></a> |
| <FONT color="green">049</FONT> private UseAttributeSets _useSets;<a name="line.49"></a> |
| <FONT color="green">050</FONT> <a name="line.50"></a> |
| <FONT color="green">051</FONT> public void parseContents(Parser parser) {<a name="line.51"></a> |
| <FONT color="green">052</FONT> final String useSets = getAttribute("use-attribute-sets");<a name="line.52"></a> |
| <FONT color="green">053</FONT> if (useSets.length() > 0) {<a name="line.53"></a> |
| <FONT color="green">054</FONT> if (!Util.isValidQNames(useSets)) {<a name="line.54"></a> |
| <FONT color="green">055</FONT> ErrorMsg err = new ErrorMsg(ErrorMsg.INVALID_QNAME_ERR, useSets, this);<a name="line.55"></a> |
| <FONT color="green">056</FONT> parser.reportError(Constants.ERROR, err); <a name="line.56"></a> |
| <FONT color="green">057</FONT> } <a name="line.57"></a> |
| <FONT color="green">058</FONT> _useSets = new UseAttributeSets(useSets, parser);<a name="line.58"></a> |
| <FONT color="green">059</FONT> }<a name="line.59"></a> |
| <FONT color="green">060</FONT> parseChildren(parser);<a name="line.60"></a> |
| <FONT color="green">061</FONT> }<a name="line.61"></a> |
| <FONT color="green">062</FONT> <a name="line.62"></a> |
| <FONT color="green">063</FONT> public void display(int indent) {<a name="line.63"></a> |
| <FONT color="green">064</FONT> indent(indent);<a name="line.64"></a> |
| <FONT color="green">065</FONT> Util.println("Copy");<a name="line.65"></a> |
| <FONT color="green">066</FONT> indent(indent + IndentIncrement);<a name="line.66"></a> |
| <FONT color="green">067</FONT> displayContents(indent + IndentIncrement);<a name="line.67"></a> |
| <FONT color="green">068</FONT> }<a name="line.68"></a> |
| <FONT color="green">069</FONT> <a name="line.69"></a> |
| <FONT color="green">070</FONT> public Type typeCheck(SymbolTable stable) throws TypeCheckError {<a name="line.70"></a> |
| <FONT color="green">071</FONT> if (_useSets != null) {<a name="line.71"></a> |
| <FONT color="green">072</FONT> _useSets.typeCheck(stable);<a name="line.72"></a> |
| <FONT color="green">073</FONT> }<a name="line.73"></a> |
| <FONT color="green">074</FONT> typeCheckContents(stable);<a name="line.74"></a> |
| <FONT color="green">075</FONT> return Type.Void;<a name="line.75"></a> |
| <FONT color="green">076</FONT> }<a name="line.76"></a> |
| <FONT color="green">077</FONT> <a name="line.77"></a> |
| <FONT color="green">078</FONT> public void translate(ClassGenerator classGen, MethodGenerator methodGen) {<a name="line.78"></a> |
| <FONT color="green">079</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.79"></a> |
| <FONT color="green">080</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.80"></a> |
| <FONT color="green">081</FONT> <a name="line.81"></a> |
| <FONT color="green">082</FONT> final LocalVariableGen name =<a name="line.82"></a> |
| <FONT color="green">083</FONT> methodGen.addLocalVariable2("name",<a name="line.83"></a> |
| <FONT color="green">084</FONT> Util.getJCRefType(STRING_SIG),<a name="line.84"></a> |
| <FONT color="green">085</FONT> null);<a name="line.85"></a> |
| <FONT color="green">086</FONT> final LocalVariableGen length =<a name="line.86"></a> |
| <FONT color="green">087</FONT> methodGen.addLocalVariable2("length",<a name="line.87"></a> |
| <FONT color="green">088</FONT> Util.getJCRefType("I"),<a name="line.88"></a> |
| <FONT color="green">089</FONT> null);<a name="line.89"></a> |
| <FONT color="green">090</FONT> <a name="line.90"></a> |
| <FONT color="green">091</FONT> // Get the name of the node to copy and save for later<a name="line.91"></a> |
| <FONT color="green">092</FONT> il.append(methodGen.loadDOM());<a name="line.92"></a> |
| <FONT color="green">093</FONT> il.append(methodGen.loadCurrentNode());<a name="line.93"></a> |
| <FONT color="green">094</FONT> il.append(methodGen.loadHandler());<a name="line.94"></a> |
| <FONT color="green">095</FONT> final int cpy = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.95"></a> |
| <FONT color="green">096</FONT> "shallowCopy",<a name="line.96"></a> |
| <FONT color="green">097</FONT> "("<a name="line.97"></a> |
| <FONT color="green">098</FONT> + NODE_SIG<a name="line.98"></a> |
| <FONT color="green">099</FONT> + TRANSLET_OUTPUT_SIG<a name="line.99"></a> |
| <FONT color="green">100</FONT> + ")" + STRING_SIG); <a name="line.100"></a> |
| <FONT color="green">101</FONT> il.append(new INVOKEINTERFACE(cpy, 3));<a name="line.101"></a> |
| <FONT color="green">102</FONT> il.append(DUP);<a name="line.102"></a> |
| <FONT color="green">103</FONT> name.setStart(il.append(new ASTORE(name.getIndex())));<a name="line.103"></a> |
| <FONT color="green">104</FONT> final BranchHandle ifBlock1 = il.append(new IFNULL(null));<a name="line.104"></a> |
| <FONT color="green">105</FONT> <a name="line.105"></a> |
| <FONT color="green">106</FONT> // Get the length of the node name and save for later<a name="line.106"></a> |
| <FONT color="green">107</FONT> il.append(new ALOAD(name.getIndex()));<a name="line.107"></a> |
| <FONT color="green">108</FONT> final int lengthMethod = cpg.addMethodref(STRING_CLASS,"length","()I");<a name="line.108"></a> |
| <FONT color="green">109</FONT> il.append(new INVOKEVIRTUAL(lengthMethod));<a name="line.109"></a> |
| <FONT color="green">110</FONT> length.setStart(il.append(new ISTORE(length.getIndex())));<a name="line.110"></a> |
| <FONT color="green">111</FONT> <a name="line.111"></a> |
| <FONT color="green">112</FONT> // Copy in attribute sets if specified<a name="line.112"></a> |
| <FONT color="green">113</FONT> if (_useSets != null) {<a name="line.113"></a> |
| <FONT color="green">114</FONT> // If the parent of this element will result in an element being<a name="line.114"></a> |
| <FONT color="green">115</FONT> // output then we know that it is safe to copy out the attributes<a name="line.115"></a> |
| <FONT color="green">116</FONT> final SyntaxTreeNode parent = getParent();<a name="line.116"></a> |
| <FONT color="green">117</FONT> if ((parent instanceof LiteralElement) ||<a name="line.117"></a> |
| <FONT color="green">118</FONT> (parent instanceof LiteralElement)) {<a name="line.118"></a> |
| <FONT color="green">119</FONT> _useSets.translate(classGen, methodGen);<a name="line.119"></a> |
| <FONT color="green">120</FONT> }<a name="line.120"></a> |
| <FONT color="green">121</FONT> // If not we have to check to see if the copy will result in an<a name="line.121"></a> |
| <FONT color="green">122</FONT> // element being output.<a name="line.122"></a> |
| <FONT color="green">123</FONT> else {<a name="line.123"></a> |
| <FONT color="green">124</FONT> // check if element; if not skip to translate body<a name="line.124"></a> |
| <FONT color="green">125</FONT> il.append(new ILOAD(length.getIndex()));<a name="line.125"></a> |
| <FONT color="green">126</FONT> final BranchHandle ifBlock2 = il.append(new IFEQ(null));<a name="line.126"></a> |
| <FONT color="green">127</FONT> // length != 0 -> element -> do attribute sets<a name="line.127"></a> |
| <FONT color="green">128</FONT> _useSets.translate(classGen, methodGen);<a name="line.128"></a> |
| <FONT color="green">129</FONT> // not an element; root<a name="line.129"></a> |
| <FONT color="green">130</FONT> ifBlock2.setTarget(il.append(NOP));<a name="line.130"></a> |
| <FONT color="green">131</FONT> }<a name="line.131"></a> |
| <FONT color="green">132</FONT> }<a name="line.132"></a> |
| <FONT color="green">133</FONT> <a name="line.133"></a> |
| <FONT color="green">134</FONT> // Instantiate body of xsl:copy<a name="line.134"></a> |
| <FONT color="green">135</FONT> translateContents(classGen, methodGen);<a name="line.135"></a> |
| <FONT color="green">136</FONT> <a name="line.136"></a> |
| <FONT color="green">137</FONT> // Call the output handler's endElement() if we copied an element<a name="line.137"></a> |
| <FONT color="green">138</FONT> // (The DOM.shallowCopy() method calls startElement().)<a name="line.138"></a> |
| <FONT color="green">139</FONT> length.setEnd(il.append(new ILOAD(length.getIndex())));<a name="line.139"></a> |
| <FONT color="green">140</FONT> final BranchHandle ifBlock3 = il.append(new IFEQ(null));<a name="line.140"></a> |
| <FONT color="green">141</FONT> il.append(methodGen.loadHandler());<a name="line.141"></a> |
| <FONT color="green">142</FONT> name.setEnd(il.append(new ALOAD(name.getIndex())));<a name="line.142"></a> |
| <FONT color="green">143</FONT> il.append(methodGen.endElement());<a name="line.143"></a> |
| <FONT color="green">144</FONT> <a name="line.144"></a> |
| <FONT color="green">145</FONT> final InstructionHandle end = il.append(NOP);<a name="line.145"></a> |
| <FONT color="green">146</FONT> ifBlock1.setTarget(end);<a name="line.146"></a> |
| <FONT color="green">147</FONT> ifBlock3.setTarget(end);<a name="line.147"></a> |
| <FONT color="green">148</FONT> methodGen.removeLocalVariable(name);<a name="line.148"></a> |
| <FONT color="green">149</FONT> methodGen.removeLocalVariable(length);<a name="line.149"></a> |
| <FONT color="green">150</FONT> }<a name="line.150"></a> |
| <FONT color="green">151</FONT> }<a name="line.151"></a> |
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| </PRE> |
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