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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: Key.java 1225842 2011-12-30 15:14:35Z mrglavas $<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.BranchHandle;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.bcel.generic.ConstantPoolGen;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.bcel.generic.GOTO;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.bcel.generic.IFEQ;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.bcel.generic.IFGE;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.bcel.generic.IFGT;<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.bcel.generic.PUSH;<a name="line.37"></a> |
| <FONT color="green">038</FONT> import org.apache.xalan.xsltc.compiler.util.ClassGenerator;<a name="line.38"></a> |
| <FONT color="green">039</FONT> import org.apache.xalan.xsltc.compiler.util.ErrorMsg;<a name="line.39"></a> |
| <FONT color="green">040</FONT> import org.apache.xalan.xsltc.compiler.util.MethodGenerator;<a name="line.40"></a> |
| <FONT color="green">041</FONT> import org.apache.xalan.xsltc.compiler.util.NodeSetType;<a name="line.41"></a> |
| <FONT color="green">042</FONT> import org.apache.xalan.xsltc.compiler.util.StringType;<a name="line.42"></a> |
| <FONT color="green">043</FONT> import org.apache.xalan.xsltc.compiler.util.Type;<a name="line.43"></a> |
| <FONT color="green">044</FONT> import org.apache.xalan.xsltc.compiler.util.TypeCheckError;<a name="line.44"></a> |
| <FONT color="green">045</FONT> import org.apache.xalan.xsltc.compiler.util.Util;<a name="line.45"></a> |
| <FONT color="green">046</FONT> import org.apache.xml.dtm.Axis;<a name="line.46"></a> |
| <FONT color="green">047</FONT> import org.apache.xml.utils.XML11Char;<a name="line.47"></a> |
| <FONT color="green">048</FONT> <a name="line.48"></a> |
| <FONT color="green">049</FONT> /**<a name="line.49"></a> |
| <FONT color="green">050</FONT> * @author Morten Jorgensen<a name="line.50"></a> |
| <FONT color="green">051</FONT> * @author Santiago Pericas-Geertsen<a name="line.51"></a> |
| <FONT color="green">052</FONT> */<a name="line.52"></a> |
| <FONT color="green">053</FONT> final class Key extends TopLevelElement {<a name="line.53"></a> |
| <FONT color="green">054</FONT> <a name="line.54"></a> |
| <FONT color="green">055</FONT> /**<a name="line.55"></a> |
| <FONT color="green">056</FONT> * The name of this key as defined in xsl:key.<a name="line.56"></a> |
| <FONT color="green">057</FONT> */<a name="line.57"></a> |
| <FONT color="green">058</FONT> private QName _name;<a name="line.58"></a> |
| <FONT color="green">059</FONT> <a name="line.59"></a> |
| <FONT color="green">060</FONT> /**<a name="line.60"></a> |
| <FONT color="green">061</FONT> * The pattern to match starting at the root node.<a name="line.61"></a> |
| <FONT color="green">062</FONT> */<a name="line.62"></a> |
| <FONT color="green">063</FONT> private Pattern _match; <a name="line.63"></a> |
| <FONT color="green">064</FONT> <a name="line.64"></a> |
| <FONT color="green">065</FONT> /**<a name="line.65"></a> |
| <FONT color="green">066</FONT> * The expression that generates the values for this key.<a name="line.66"></a> |
| <FONT color="green">067</FONT> */<a name="line.67"></a> |
| <FONT color="green">068</FONT> private Expression _use;<a name="line.68"></a> |
| <FONT color="green">069</FONT> <a name="line.69"></a> |
| <FONT color="green">070</FONT> /**<a name="line.70"></a> |
| <FONT color="green">071</FONT> * The type of the _use expression.<a name="line.71"></a> |
| <FONT color="green">072</FONT> */<a name="line.72"></a> |
| <FONT color="green">073</FONT> private Type _useType;<a name="line.73"></a> |
| <FONT color="green">074</FONT> <a name="line.74"></a> |
| <FONT color="green">075</FONT> /**<a name="line.75"></a> |
| <FONT color="green">076</FONT> * Parse the <xsl:key> element and attributes<a name="line.76"></a> |
| <FONT color="green">077</FONT> * @param parser A reference to the stylesheet parser<a name="line.77"></a> |
| <FONT color="green">078</FONT> */<a name="line.78"></a> |
| <FONT color="green">079</FONT> public void parseContents(Parser parser) {<a name="line.79"></a> |
| <FONT color="green">080</FONT> <a name="line.80"></a> |
| <FONT color="green">081</FONT> // Get the required attributes and parser XPath expressions<a name="line.81"></a> |
| <FONT color="green">082</FONT> final String name = getAttribute("name");<a name="line.82"></a> |
| <FONT color="green">083</FONT> if (!XML11Char.isXML11ValidQName(name)){<a name="line.83"></a> |
| <FONT color="green">084</FONT> ErrorMsg err = new ErrorMsg(ErrorMsg.INVALID_QNAME_ERR, name, this);<a name="line.84"></a> |
| <FONT color="green">085</FONT> parser.reportError(Constants.ERROR, err); <a name="line.85"></a> |
| <FONT color="green">086</FONT> }<a name="line.86"></a> |
| <FONT color="green">087</FONT> <a name="line.87"></a> |
| <FONT color="green">088</FONT> // Parse key name and add to symbol table<a name="line.88"></a> |
| <FONT color="green">089</FONT> _name = parser.getQNameIgnoreDefaultNs(name);<a name="line.89"></a> |
| <FONT color="green">090</FONT> getSymbolTable().addKey(_name, this);<a name="line.90"></a> |
| <FONT color="green">091</FONT> <a name="line.91"></a> |
| <FONT color="green">092</FONT> _match = parser.parsePattern(this, "match", null);<a name="line.92"></a> |
| <FONT color="green">093</FONT> _use = parser.parseExpression(this, "use", null);<a name="line.93"></a> |
| <FONT color="green">094</FONT> <a name="line.94"></a> |
| <FONT color="green">095</FONT> // Make sure required attribute(s) have been set<a name="line.95"></a> |
| <FONT color="green">096</FONT> if (_name == null) {<a name="line.96"></a> |
| <FONT color="green">097</FONT> reportError(this, parser, ErrorMsg.REQUIRED_ATTR_ERR, "name");<a name="line.97"></a> |
| <FONT color="green">098</FONT> return;<a name="line.98"></a> |
| <FONT color="green">099</FONT> }<a name="line.99"></a> |
| <FONT color="green">100</FONT> if (_match.isDummy()) {<a name="line.100"></a> |
| <FONT color="green">101</FONT> reportError(this, parser, ErrorMsg.REQUIRED_ATTR_ERR, "match");<a name="line.101"></a> |
| <FONT color="green">102</FONT> return;<a name="line.102"></a> |
| <FONT color="green">103</FONT> }<a name="line.103"></a> |
| <FONT color="green">104</FONT> if (_use.isDummy()) {<a name="line.104"></a> |
| <FONT color="green">105</FONT> reportError(this, parser, ErrorMsg.REQUIRED_ATTR_ERR, "use");<a name="line.105"></a> |
| <FONT color="green">106</FONT> return;<a name="line.106"></a> |
| <FONT color="green">107</FONT> }<a name="line.107"></a> |
| <FONT color="green">108</FONT> }<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> * Returns a String-representation of this key's name<a name="line.111"></a> |
| <FONT color="green">112</FONT> * @return The key's name (from the <xsl:key> elements 'name' attribute).<a name="line.112"></a> |
| <FONT color="green">113</FONT> */<a name="line.113"></a> |
| <FONT color="green">114</FONT> public String getName() {<a name="line.114"></a> |
| <FONT color="green">115</FONT> return _name.toString();<a name="line.115"></a> |
| <FONT color="green">116</FONT> }<a name="line.116"></a> |
| <FONT color="green">117</FONT> <a name="line.117"></a> |
| <FONT color="green">118</FONT> public Type typeCheck(SymbolTable stable) throws TypeCheckError {<a name="line.118"></a> |
| <FONT color="green">119</FONT> // Type check match pattern<a name="line.119"></a> |
| <FONT color="green">120</FONT> _match.typeCheck(stable);<a name="line.120"></a> |
| <FONT color="green">121</FONT> <a name="line.121"></a> |
| <FONT color="green">122</FONT> // Cast node values to string values (except for nodesets)<a name="line.122"></a> |
| <FONT color="green">123</FONT> _useType = _use.typeCheck(stable);<a name="line.123"></a> |
| <FONT color="green">124</FONT> if (_useType instanceof StringType == false &&<a name="line.124"></a> |
| <FONT color="green">125</FONT> _useType instanceof NodeSetType == false) <a name="line.125"></a> |
| <FONT color="green">126</FONT> {<a name="line.126"></a> |
| <FONT color="green">127</FONT> _use = new CastExpr(_use, Type.String);<a name="line.127"></a> |
| <FONT color="green">128</FONT> }<a name="line.128"></a> |
| <FONT color="green">129</FONT> <a name="line.129"></a> |
| <FONT color="green">130</FONT> return Type.Void;<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> * This method is called if the "use" attribute of the key contains a<a name="line.134"></a> |
| <FONT color="green">135</FONT> * node set. In this case we must traverse all nodes in the set and<a name="line.135"></a> |
| <FONT color="green">136</FONT> * create one entry in this key's index for each node in the set.<a name="line.136"></a> |
| <FONT color="green">137</FONT> */<a name="line.137"></a> |
| <FONT color="green">138</FONT> public void traverseNodeSet(ClassGenerator classGen,<a name="line.138"></a> |
| <FONT color="green">139</FONT> MethodGenerator methodGen,<a name="line.139"></a> |
| <FONT color="green">140</FONT> int buildKeyIndex) {<a name="line.140"></a> |
| <FONT color="green">141</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.141"></a> |
| <FONT color="green">142</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.142"></a> |
| <FONT color="green">143</FONT> <a name="line.143"></a> |
| <FONT color="green">144</FONT> // DOM.getStringValueX(nodeIndex) => String<a name="line.144"></a> |
| <FONT color="green">145</FONT> final int getNodeValue = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.145"></a> |
| <FONT color="green">146</FONT> GET_NODE_VALUE,<a name="line.146"></a> |
| <FONT color="green">147</FONT> "(I)"+STRING_SIG);<a name="line.147"></a> |
| <FONT color="green">148</FONT> <a name="line.148"></a> |
| <FONT color="green">149</FONT> final int getNodeIdent = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.149"></a> |
| <FONT color="green">150</FONT> "getNodeIdent",<a name="line.150"></a> |
| <FONT color="green">151</FONT> "(I)"+NODE_SIG); <a name="line.151"></a> |
| <FONT color="green">152</FONT> <a name="line.152"></a> |
| <FONT color="green">153</FONT> // AbstractTranslet.SetKeyIndexDom(name, Dom) => void<a name="line.153"></a> |
| <FONT color="green">154</FONT> final int keyDom = cpg.addMethodref(TRANSLET_CLASS,<a name="line.154"></a> |
| <FONT color="green">155</FONT> "setKeyIndexDom",<a name="line.155"></a> |
| <FONT color="green">156</FONT> "("+STRING_SIG+DOM_INTF_SIG+")V"); <a name="line.156"></a> |
| <FONT color="green">157</FONT> <a name="line.157"></a> |
| <FONT color="green">158</FONT> <a name="line.158"></a> |
| <FONT color="green">159</FONT> // This variable holds the id of the node we found with the "match"<a name="line.159"></a> |
| <FONT color="green">160</FONT> // attribute of xsl:key. This is the id we store, with the value we<a name="line.160"></a> |
| <FONT color="green">161</FONT> // get from the nodes we find here, in the index for this key.<a name="line.161"></a> |
| <FONT color="green">162</FONT> final LocalVariableGen parentNode =<a name="line.162"></a> |
| <FONT color="green">163</FONT> methodGen.addLocalVariable("parentNode",<a name="line.163"></a> |
| <FONT color="green">164</FONT> Util.getJCRefType("I"),<a name="line.164"></a> |
| <FONT color="green">165</FONT> null, null);<a name="line.165"></a> |
| <FONT color="green">166</FONT> <a name="line.166"></a> |
| <FONT color="green">167</FONT> // Get the 'parameter' from the stack and store it in a local var.<a name="line.167"></a> |
| <FONT color="green">168</FONT> parentNode.setStart(il.append(new ISTORE(parentNode.getIndex()))); <a name="line.168"></a> |
| <FONT color="green">169</FONT> <a name="line.169"></a> |
| <FONT color="green">170</FONT> // Save current node and current iterator on the stack<a name="line.170"></a> |
| <FONT color="green">171</FONT> il.append(methodGen.loadCurrentNode());<a name="line.171"></a> |
| <FONT color="green">172</FONT> il.append(methodGen.loadIterator());<a name="line.172"></a> |
| <FONT color="green">173</FONT> <a name="line.173"></a> |
| <FONT color="green">174</FONT> // Overwrite current iterator with one that gives us only what we want<a name="line.174"></a> |
| <FONT color="green">175</FONT> _use.translate(classGen, methodGen);<a name="line.175"></a> |
| <FONT color="green">176</FONT> _use.startIterator(classGen, methodGen);<a name="line.176"></a> |
| <FONT color="green">177</FONT> il.append(methodGen.storeIterator());<a name="line.177"></a> |
| <FONT color="green">178</FONT> <a name="line.178"></a> |
| <FONT color="green">179</FONT> final BranchHandle nextNode = il.append(new GOTO(null));<a name="line.179"></a> |
| <FONT color="green">180</FONT> final InstructionHandle loop = il.append(NOP);<a name="line.180"></a> |
| <FONT color="green">181</FONT> <a name="line.181"></a> |
| <FONT color="green">182</FONT> // Prepare to call buildKeyIndex(String name, int node, String value);<a name="line.182"></a> |
| <FONT color="green">183</FONT> il.append(classGen.loadTranslet());<a name="line.183"></a> |
| <FONT color="green">184</FONT> il.append(new PUSH(cpg, _name.toString()));<a name="line.184"></a> |
| <FONT color="green">185</FONT> parentNode.setEnd(il.append(new ILOAD(parentNode.getIndex())));<a name="line.185"></a> |
| <FONT color="green">186</FONT> <a name="line.186"></a> |
| <FONT color="green">187</FONT> // Now get the node value and push it on the parameter stack<a name="line.187"></a> |
| <FONT color="green">188</FONT> il.append(methodGen.loadDOM());<a name="line.188"></a> |
| <FONT color="green">189</FONT> il.append(methodGen.loadCurrentNode());<a name="line.189"></a> |
| <FONT color="green">190</FONT> il.append(new INVOKEINTERFACE(getNodeValue, 2)); <a name="line.190"></a> |
| <FONT color="green">191</FONT> <a name="line.191"></a> |
| <FONT color="green">192</FONT> // Finally do the call to add an entry in the index for this key.<a name="line.192"></a> |
| <FONT color="green">193</FONT> il.append(new INVOKEVIRTUAL(buildKeyIndex));<a name="line.193"></a> |
| <FONT color="green">194</FONT> <a name="line.194"></a> |
| <FONT color="green">195</FONT> il.append(classGen.loadTranslet());<a name="line.195"></a> |
| <FONT color="green">196</FONT> il.append(new PUSH(cpg, getName()));<a name="line.196"></a> |
| <FONT color="green">197</FONT> il.append(methodGen.loadDOM());<a name="line.197"></a> |
| <FONT color="green">198</FONT> il.append(new INVOKEVIRTUAL(keyDom));<a name="line.198"></a> |
| <FONT color="green">199</FONT> <a name="line.199"></a> |
| <FONT color="green">200</FONT> nextNode.setTarget(il.append(methodGen.loadIterator()));<a name="line.200"></a> |
| <FONT color="green">201</FONT> il.append(methodGen.nextNode()); <a name="line.201"></a> |
| <FONT color="green">202</FONT> <a name="line.202"></a> |
| <FONT color="green">203</FONT> il.append(DUP);<a name="line.203"></a> |
| <FONT color="green">204</FONT> il.append(methodGen.storeCurrentNode());<a name="line.204"></a> |
| <FONT color="green">205</FONT> il.append(new IFGE(loop)); // Go on to next matching node....<a name="line.205"></a> |
| <FONT color="green">206</FONT> <a name="line.206"></a> |
| <FONT color="green">207</FONT> // Restore current node and current iterator from the stack<a name="line.207"></a> |
| <FONT color="green">208</FONT> il.append(methodGen.storeIterator());<a name="line.208"></a> |
| <FONT color="green">209</FONT> il.append(methodGen.storeCurrentNode());<a name="line.209"></a> |
| <FONT color="green">210</FONT> }<a name="line.210"></a> |
| <FONT color="green">211</FONT> <a name="line.211"></a> |
| <FONT color="green">212</FONT> /**<a name="line.212"></a> |
| <FONT color="green">213</FONT> * Gather all nodes that match the expression in the attribute "match"<a name="line.213"></a> |
| <FONT color="green">214</FONT> * and add one (or more) entries in this key's index.<a name="line.214"></a> |
| <FONT color="green">215</FONT> */<a name="line.215"></a> |
| <FONT color="green">216</FONT> public void translate(ClassGenerator classGen, MethodGenerator methodGen) {<a name="line.216"></a> |
| <FONT color="green">217</FONT> <a name="line.217"></a> |
| <FONT color="green">218</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.218"></a> |
| <FONT color="green">219</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.219"></a> |
| <FONT color="green">220</FONT> final int current = methodGen.getLocalIndex("current");<a name="line.220"></a> |
| <FONT color="green">221</FONT> <a name="line.221"></a> |
| <FONT color="green">222</FONT> // AbstractTranslet.buildKeyIndex(name,node_id,value) => void<a name="line.222"></a> |
| <FONT color="green">223</FONT> final int key = cpg.addMethodref(TRANSLET_CLASS,<a name="line.223"></a> |
| <FONT color="green">224</FONT> "buildKeyIndex",<a name="line.224"></a> |
| <FONT color="green">225</FONT> "("+STRING_SIG+"I"+OBJECT_SIG+")V");<a name="line.225"></a> |
| <FONT color="green">226</FONT> <a name="line.226"></a> |
| <FONT color="green">227</FONT> // AbstractTranslet.SetKeyIndexDom(name, Dom) => void<a name="line.227"></a> |
| <FONT color="green">228</FONT> final int keyDom = cpg.addMethodref(TRANSLET_CLASS,<a name="line.228"></a> |
| <FONT color="green">229</FONT> "setKeyIndexDom",<a name="line.229"></a> |
| <FONT color="green">230</FONT> "("+STRING_SIG+DOM_INTF_SIG+")V");<a name="line.230"></a> |
| <FONT color="green">231</FONT> <a name="line.231"></a> |
| <FONT color="green">232</FONT> final int getNodeIdent = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.232"></a> |
| <FONT color="green">233</FONT> "getNodeIdent",<a name="line.233"></a> |
| <FONT color="green">234</FONT> "(I)"+NODE_SIG); <a name="line.234"></a> |
| <FONT color="green">235</FONT> <a name="line.235"></a> |
| <FONT color="green">236</FONT> // DOM.getAxisIterator(root) => NodeIterator<a name="line.236"></a> |
| <FONT color="green">237</FONT> final int git = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.237"></a> |
| <FONT color="green">238</FONT> "getAxisIterator",<a name="line.238"></a> |
| <FONT color="green">239</FONT> "(I)"+NODE_ITERATOR_SIG);<a name="line.239"></a> |
| <FONT color="green">240</FONT> <a name="line.240"></a> |
| <FONT color="green">241</FONT> il.append(methodGen.loadCurrentNode());<a name="line.241"></a> |
| <FONT color="green">242</FONT> il.append(methodGen.loadIterator());<a name="line.242"></a> |
| <FONT color="green">243</FONT> <a name="line.243"></a> |
| <FONT color="green">244</FONT> // Get an iterator for all nodes in the DOM<a name="line.244"></a> |
| <FONT color="green">245</FONT> il.append(methodGen.loadDOM()); <a name="line.245"></a> |
| <FONT color="green">246</FONT> il.append(new PUSH(cpg,Axis.DESCENDANT));<a name="line.246"></a> |
| <FONT color="green">247</FONT> il.append(new INVOKEINTERFACE(git, 2));<a name="line.247"></a> |
| <FONT color="green">248</FONT> <a name="line.248"></a> |
| <FONT color="green">249</FONT> // Reset the iterator to start with the root node<a name="line.249"></a> |
| <FONT color="green">250</FONT> il.append(methodGen.loadCurrentNode());<a name="line.250"></a> |
| <FONT color="green">251</FONT> il.append(methodGen.setStartNode());<a name="line.251"></a> |
| <FONT color="green">252</FONT> il.append(methodGen.storeIterator());<a name="line.252"></a> |
| <FONT color="green">253</FONT> <a name="line.253"></a> |
| <FONT color="green">254</FONT> // Loop for traversing all nodes in the DOM<a name="line.254"></a> |
| <FONT color="green">255</FONT> final BranchHandle nextNode = il.append(new GOTO(null));<a name="line.255"></a> |
| <FONT color="green">256</FONT> final InstructionHandle loop = il.append(NOP);<a name="line.256"></a> |
| <FONT color="green">257</FONT> <a name="line.257"></a> |
| <FONT color="green">258</FONT> // Check if the current node matches the pattern in "match"<a name="line.258"></a> |
| <FONT color="green">259</FONT> il.append(methodGen.loadCurrentNode());<a name="line.259"></a> |
| <FONT color="green">260</FONT> _match.translate(classGen, methodGen);<a name="line.260"></a> |
| <FONT color="green">261</FONT> _match.synthesize(classGen, methodGen); // Leaves 0 or 1 on stack<a name="line.261"></a> |
| <FONT color="green">262</FONT> final BranchHandle skipNode = il.append(new IFEQ(null));<a name="line.262"></a> |
| <FONT color="green">263</FONT> <a name="line.263"></a> |
| <FONT color="green">264</FONT> // If this is a node-set we must go through each node in the set<a name="line.264"></a> |
| <FONT color="green">265</FONT> if (_useType instanceof NodeSetType) {<a name="line.265"></a> |
| <FONT color="green">266</FONT> // Pass current node as parameter (we're indexing on that node)<a name="line.266"></a> |
| <FONT color="green">267</FONT> il.append(methodGen.loadCurrentNode());<a name="line.267"></a> |
| <FONT color="green">268</FONT> traverseNodeSet(classGen, methodGen, key);<a name="line.268"></a> |
| <FONT color="green">269</FONT> }<a name="line.269"></a> |
| <FONT color="green">270</FONT> else {<a name="line.270"></a> |
| <FONT color="green">271</FONT> il.append(classGen.loadTranslet());<a name="line.271"></a> |
| <FONT color="green">272</FONT> il.append(DUP);<a name="line.272"></a> |
| <FONT color="green">273</FONT> il.append(new PUSH(cpg, _name.toString()));<a name="line.273"></a> |
| <FONT color="green">274</FONT> il.append(DUP_X1);<a name="line.274"></a> |
| <FONT color="green">275</FONT> il.append(methodGen.loadCurrentNode());<a name="line.275"></a> |
| <FONT color="green">276</FONT> _use.translate(classGen, methodGen);<a name="line.276"></a> |
| <FONT color="green">277</FONT> il.append(new INVOKEVIRTUAL(key));<a name="line.277"></a> |
| <FONT color="green">278</FONT> <a name="line.278"></a> |
| <FONT color="green">279</FONT> il.append(methodGen.loadDOM());<a name="line.279"></a> |
| <FONT color="green">280</FONT> il.append(new INVOKEVIRTUAL(keyDom));<a name="line.280"></a> |
| <FONT color="green">281</FONT> }<a name="line.281"></a> |
| <FONT color="green">282</FONT> <a name="line.282"></a> |
| <FONT color="green">283</FONT> // Get the next node from the iterator and do loop again...<a name="line.283"></a> |
| <FONT color="green">284</FONT> final InstructionHandle skip = il.append(NOP);<a name="line.284"></a> |
| <FONT color="green">285</FONT> <a name="line.285"></a> |
| <FONT color="green">286</FONT> il.append(methodGen.loadIterator());<a name="line.286"></a> |
| <FONT color="green">287</FONT> il.append(methodGen.nextNode());<a name="line.287"></a> |
| <FONT color="green">288</FONT> il.append(DUP);<a name="line.288"></a> |
| <FONT color="green">289</FONT> il.append(methodGen.storeCurrentNode());<a name="line.289"></a> |
| <FONT color="green">290</FONT> il.append(new IFGT(loop));<a name="line.290"></a> |
| <FONT color="green">291</FONT> <a name="line.291"></a> |
| <FONT color="green">292</FONT> // Restore current node and current iterator from the stack<a name="line.292"></a> |
| <FONT color="green">293</FONT> il.append(methodGen.storeIterator());<a name="line.293"></a> |
| <FONT color="green">294</FONT> il.append(methodGen.storeCurrentNode());<a name="line.294"></a> |
| <FONT color="green">295</FONT> <a name="line.295"></a> |
| <FONT color="green">296</FONT> nextNode.setTarget(skip);<a name="line.296"></a> |
| <FONT color="green">297</FONT> skipNode.setTarget(skip);<a name="line.297"></a> |
| <FONT color="green">298</FONT> }<a name="line.298"></a> |
| <FONT color="green">299</FONT> }<a name="line.299"></a> |
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| </PRE> |
| </BODY> |
| </HTML> |
