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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: Step.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 java.util.Vector;<a name="line.24"></a> |
| <FONT color="green">025</FONT> <a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.bcel.generic.ALOAD;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.bcel.generic.ASTORE;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.bcel.generic.CHECKCAST;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.bcel.generic.ConstantPoolGen;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.bcel.generic.ICONST;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.bcel.generic.ILOAD;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.apache.bcel.generic.ISTORE;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.apache.bcel.generic.INVOKEINTERFACE;<a name="line.33"></a> |
| <FONT color="green">034</FONT> import org.apache.bcel.generic.INVOKESPECIAL;<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.NEW;<a name="line.37"></a> |
| <FONT color="green">038</FONT> import org.apache.bcel.generic.PUSH;<a name="line.38"></a> |
| <FONT color="green">039</FONT> import org.apache.xalan.xsltc.DOM;<a name="line.39"></a> |
| <FONT color="green">040</FONT> import org.apache.xalan.xsltc.compiler.util.ClassGenerator;<a name="line.40"></a> |
| <FONT color="green">041</FONT> import org.apache.xalan.xsltc.compiler.util.MethodGenerator;<a name="line.41"></a> |
| <FONT color="green">042</FONT> import org.apache.xalan.xsltc.compiler.util.Type;<a name="line.42"></a> |
| <FONT color="green">043</FONT> import org.apache.xalan.xsltc.compiler.util.TypeCheckError;<a name="line.43"></a> |
| <FONT color="green">044</FONT> import org.apache.xalan.xsltc.compiler.util.Util;<a name="line.44"></a> |
| <FONT color="green">045</FONT> import org.apache.xml.dtm.Axis;<a name="line.45"></a> |
| <FONT color="green">046</FONT> import org.apache.xml.dtm.DTM;<a name="line.46"></a> |
| <FONT color="green">047</FONT> <a name="line.47"></a> |
| <FONT color="green">048</FONT> /**<a name="line.48"></a> |
| <FONT color="green">049</FONT> * @author Jacek Ambroziak<a name="line.49"></a> |
| <FONT color="green">050</FONT> * @author Santiago Pericas-Geertsen<a name="line.50"></a> |
| <FONT color="green">051</FONT> * @author Morten Jorgensen<a name="line.51"></a> |
| <FONT color="green">052</FONT> */<a name="line.52"></a> |
| <FONT color="green">053</FONT> final class Step extends RelativeLocationPath {<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> * This step's axis as defined in class Axis.<a name="line.56"></a> |
| <FONT color="green">057</FONT> */<a name="line.57"></a> |
| <FONT color="green">058</FONT> private int _axis;<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> * A vector of predicates (filters) defined on this step - may be null<a name="line.61"></a> |
| <FONT color="green">062</FONT> */<a name="line.62"></a> |
| <FONT color="green">063</FONT> private Vector _predicates;<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> * Some simple predicates can be handled by this class (and not by the<a name="line.66"></a> |
| <FONT color="green">067</FONT> * Predicate class) and will be removed from the above vector as they are<a name="line.67"></a> |
| <FONT color="green">068</FONT> * handled. We use this boolean to remember if we did have any predicates.<a name="line.68"></a> |
| <FONT color="green">069</FONT> */<a name="line.69"></a> |
| <FONT color="green">070</FONT> private boolean _hadPredicates = false;<a name="line.70"></a> |
| <FONT color="green">071</FONT> <a name="line.71"></a> |
| <FONT color="green">072</FONT> /**<a name="line.72"></a> |
| <FONT color="green">073</FONT> * Type of the node test.<a name="line.73"></a> |
| <FONT color="green">074</FONT> */<a name="line.74"></a> |
| <FONT color="green">075</FONT> private int _nodeType;<a name="line.75"></a> |
| <FONT color="green">076</FONT> <a name="line.76"></a> |
| <FONT color="green">077</FONT> public Step(int axis, int nodeType, Vector predicates) {<a name="line.77"></a> |
| <FONT color="green">078</FONT> _axis = axis;<a name="line.78"></a> |
| <FONT color="green">079</FONT> _nodeType = nodeType;<a name="line.79"></a> |
| <FONT color="green">080</FONT> _predicates = predicates;<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> /**<a name="line.83"></a> |
| <FONT color="green">084</FONT> * Set the parser for this element and all child predicates<a name="line.84"></a> |
| <FONT color="green">085</FONT> */<a name="line.85"></a> |
| <FONT color="green">086</FONT> public void setParser(Parser parser) {<a name="line.86"></a> |
| <FONT color="green">087</FONT> super.setParser(parser);<a name="line.87"></a> |
| <FONT color="green">088</FONT> if (_predicates != null) {<a name="line.88"></a> |
| <FONT color="green">089</FONT> final int n = _predicates.size();<a name="line.89"></a> |
| <FONT color="green">090</FONT> for (int i = 0; i < n; i++) {<a name="line.90"></a> |
| <FONT color="green">091</FONT> final Predicate exp = (Predicate)_predicates.elementAt(i);<a name="line.91"></a> |
| <FONT color="green">092</FONT> exp.setParser(parser);<a name="line.92"></a> |
| <FONT color="green">093</FONT> exp.setParent(this);<a name="line.93"></a> |
| <FONT color="green">094</FONT> }<a name="line.94"></a> |
| <FONT color="green">095</FONT> }<a name="line.95"></a> |
| <FONT color="green">096</FONT> }<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> * Define the axis (defined in Axis class) for this step<a name="line.99"></a> |
| <FONT color="green">100</FONT> */<a name="line.100"></a> |
| <FONT color="green">101</FONT> public int getAxis() {<a name="line.101"></a> |
| <FONT color="green">102</FONT> return _axis;<a name="line.102"></a> |
| <FONT color="green">103</FONT> }<a name="line.103"></a> |
| <FONT color="green">104</FONT> <a name="line.104"></a> |
| <FONT color="green">105</FONT> /**<a name="line.105"></a> |
| <FONT color="green">106</FONT> * Get the axis (defined in Axis class) for this step<a name="line.106"></a> |
| <FONT color="green">107</FONT> */<a name="line.107"></a> |
| <FONT color="green">108</FONT> public void setAxis(int axis) {<a name="line.108"></a> |
| <FONT color="green">109</FONT> _axis = axis;<a name="line.109"></a> |
| <FONT color="green">110</FONT> }<a name="line.110"></a> |
| <FONT color="green">111</FONT> <a name="line.111"></a> |
| <FONT color="green">112</FONT> /**<a name="line.112"></a> |
| <FONT color="green">113</FONT> * Returns the node-type for this step<a name="line.113"></a> |
| <FONT color="green">114</FONT> */<a name="line.114"></a> |
| <FONT color="green">115</FONT> public int getNodeType() {<a name="line.115"></a> |
| <FONT color="green">116</FONT> return _nodeType;<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> |
| <FONT color="green">119</FONT> /**<a name="line.119"></a> |
| <FONT color="green">120</FONT> * Returns the vector containing all predicates for this step.<a name="line.120"></a> |
| <FONT color="green">121</FONT> */<a name="line.121"></a> |
| <FONT color="green">122</FONT> public Vector getPredicates() {<a name="line.122"></a> |
| <FONT color="green">123</FONT> return _predicates;<a name="line.123"></a> |
| <FONT color="green">124</FONT> }<a name="line.124"></a> |
| <FONT color="green">125</FONT> <a name="line.125"></a> |
| <FONT color="green">126</FONT> /**<a name="line.126"></a> |
| <FONT color="green">127</FONT> * Returns the vector containing all predicates for this step.<a name="line.127"></a> |
| <FONT color="green">128</FONT> */<a name="line.128"></a> |
| <FONT color="green">129</FONT> public void addPredicates(Vector predicates) {<a name="line.129"></a> |
| <FONT color="green">130</FONT> if (_predicates == null) {<a name="line.130"></a> |
| <FONT color="green">131</FONT> _predicates = predicates;<a name="line.131"></a> |
| <FONT color="green">132</FONT> }<a name="line.132"></a> |
| <FONT color="green">133</FONT> else {<a name="line.133"></a> |
| <FONT color="green">134</FONT> _predicates.addAll(predicates);<a name="line.134"></a> |
| <FONT color="green">135</FONT> }<a name="line.135"></a> |
| <FONT color="green">136</FONT> }<a name="line.136"></a> |
| <FONT color="green">137</FONT> <a name="line.137"></a> |
| <FONT color="green">138</FONT> /**<a name="line.138"></a> |
| <FONT color="green">139</FONT> * Returns 'true' if this step has a parent pattern.<a name="line.139"></a> |
| <FONT color="green">140</FONT> * This method will return 'false' if this step occurs on its own under<a name="line.140"></a> |
| <FONT color="green">141</FONT> * an element like <xsl:for-each> or <xsl:apply-templates>.<a name="line.141"></a> |
| <FONT color="green">142</FONT> */<a name="line.142"></a> |
| <FONT color="green">143</FONT> private boolean hasParentPattern() {<a name="line.143"></a> |
| <FONT color="green">144</FONT> final SyntaxTreeNode parent = getParent();<a name="line.144"></a> |
| <FONT color="green">145</FONT> return (parent instanceof ParentPattern ||<a name="line.145"></a> |
| <FONT color="green">146</FONT> parent instanceof ParentLocationPath ||<a name="line.146"></a> |
| <FONT color="green">147</FONT> parent instanceof UnionPathExpr ||<a name="line.147"></a> |
| <FONT color="green">148</FONT> parent instanceof FilterParentPath);<a name="line.148"></a> |
| <FONT color="green">149</FONT> }<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> |
| <FONT color="green">152</FONT> * Returns 'true' if this step has any predicates<a name="line.152"></a> |
| <FONT color="green">153</FONT> */<a name="line.153"></a> |
| <FONT color="green">154</FONT> private boolean hasPredicates() {<a name="line.154"></a> |
| <FONT color="green">155</FONT> return _predicates != null && _predicates.size() > 0;<a name="line.155"></a> |
| <FONT color="green">156</FONT> }<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> * Returns 'true' if this step is used within a predicate<a name="line.159"></a> |
| <FONT color="green">160</FONT> */<a name="line.160"></a> |
| <FONT color="green">161</FONT> private boolean isPredicate() {<a name="line.161"></a> |
| <FONT color="green">162</FONT> SyntaxTreeNode parent = this;<a name="line.162"></a> |
| <FONT color="green">163</FONT> while (parent != null) {<a name="line.163"></a> |
| <FONT color="green">164</FONT> parent = parent.getParent();<a name="line.164"></a> |
| <FONT color="green">165</FONT> if (parent instanceof Predicate) return true;<a name="line.165"></a> |
| <FONT color="green">166</FONT> }<a name="line.166"></a> |
| <FONT color="green">167</FONT> return false;<a name="line.167"></a> |
| <FONT color="green">168</FONT> }<a name="line.168"></a> |
| <FONT color="green">169</FONT> <a name="line.169"></a> |
| <FONT color="green">170</FONT> /**<a name="line.170"></a> |
| <FONT color="green">171</FONT> * True if this step is the abbreviated step '.'<a name="line.171"></a> |
| <FONT color="green">172</FONT> */<a name="line.172"></a> |
| <FONT color="green">173</FONT> public boolean isAbbreviatedDot() {<a name="line.173"></a> |
| <FONT color="green">174</FONT> return _nodeType == NodeTest.ANODE && _axis == Axis.SELF;<a name="line.174"></a> |
| <FONT color="green">175</FONT> }<a name="line.175"></a> |
| <FONT color="green">176</FONT> <a name="line.176"></a> |
| <FONT color="green">177</FONT> <a name="line.177"></a> |
| <FONT color="green">178</FONT> /**<a name="line.178"></a> |
| <FONT color="green">179</FONT> * True if this step is the abbreviated step '..'<a name="line.179"></a> |
| <FONT color="green">180</FONT> */<a name="line.180"></a> |
| <FONT color="green">181</FONT> public boolean isAbbreviatedDDot() {<a name="line.181"></a> |
| <FONT color="green">182</FONT> return _nodeType == NodeTest.ANODE && _axis == Axis.PARENT;<a name="line.182"></a> |
| <FONT color="green">183</FONT> }<a name="line.183"></a> |
| <FONT color="green">184</FONT> <a name="line.184"></a> |
| <FONT color="green">185</FONT> /**<a name="line.185"></a> |
| <FONT color="green">186</FONT> * Type check this step. The abbreviated steps '.' and '@attr' are<a name="line.186"></a> |
| <FONT color="green">187</FONT> * assigned type node if they have no predicates. All other steps <a name="line.187"></a> |
| <FONT color="green">188</FONT> * have type node-set.<a name="line.188"></a> |
| <FONT color="green">189</FONT> */<a name="line.189"></a> |
| <FONT color="green">190</FONT> public Type typeCheck(SymbolTable stable) throws TypeCheckError {<a name="line.190"></a> |
| <FONT color="green">191</FONT> <a name="line.191"></a> |
| <FONT color="green">192</FONT> // Save this value for later - important for testing for special<a name="line.192"></a> |
| <FONT color="green">193</FONT> // combinations of steps and patterns than can be optimised<a name="line.193"></a> |
| <FONT color="green">194</FONT> _hadPredicates = hasPredicates();<a name="line.194"></a> |
| <FONT color="green">195</FONT> <a name="line.195"></a> |
| <FONT color="green">196</FONT> // Special case for '.'<a name="line.196"></a> |
| <FONT color="green">197</FONT> // in the case where '.' has a context such as book/. <a name="line.197"></a> |
| <FONT color="green">198</FONT> // or .[false()] we can not optimize the nodeset to a single node. <a name="line.198"></a> |
| <FONT color="green">199</FONT> if (isAbbreviatedDot()) {<a name="line.199"></a> |
| <FONT color="green">200</FONT> _type = (hasParentPattern() || hasPredicates() ) ? <a name="line.200"></a> |
| <FONT color="green">201</FONT> Type.NodeSet : Type.Node;<a name="line.201"></a> |
| <FONT color="green">202</FONT> }<a name="line.202"></a> |
| <FONT color="green">203</FONT> else {<a name="line.203"></a> |
| <FONT color="green">204</FONT> _type = Type.NodeSet;<a name="line.204"></a> |
| <FONT color="green">205</FONT> }<a name="line.205"></a> |
| <FONT color="green">206</FONT> <a name="line.206"></a> |
| <FONT color="green">207</FONT> // Type check all predicates (expressions applied to the step)<a name="line.207"></a> |
| <FONT color="green">208</FONT> if (_predicates != null) {<a name="line.208"></a> |
| <FONT color="green">209</FONT> final int n = _predicates.size();<a name="line.209"></a> |
| <FONT color="green">210</FONT> for (int i = 0; i < n; i++) {<a name="line.210"></a> |
| <FONT color="green">211</FONT> final Expression pred = (Expression)_predicates.elementAt(i);<a name="line.211"></a> |
| <FONT color="green">212</FONT> pred.typeCheck(stable);<a name="line.212"></a> |
| <FONT color="green">213</FONT> }<a name="line.213"></a> |
| <FONT color="green">214</FONT> }<a name="line.214"></a> |
| <FONT color="green">215</FONT> <a name="line.215"></a> |
| <FONT color="green">216</FONT> // Return either Type.Node or Type.NodeSet<a name="line.216"></a> |
| <FONT color="green">217</FONT> return _type;<a name="line.217"></a> |
| <FONT color="green">218</FONT> }<a name="line.218"></a> |
| <FONT color="green">219</FONT> <a name="line.219"></a> |
| <FONT color="green">220</FONT> /**<a name="line.220"></a> |
| <FONT color="green">221</FONT> * Translate a step by pushing the appropriate iterator onto the stack.<a name="line.221"></a> |
| <FONT color="green">222</FONT> * The abbreviated steps '.' and '@attr' do not create new iterators<a name="line.222"></a> |
| <FONT color="green">223</FONT> * if they are not part of a LocationPath and have no filters.<a name="line.223"></a> |
| <FONT color="green">224</FONT> * In these cases a node index instead of an iterator is pushed<a name="line.224"></a> |
| <FONT color="green">225</FONT> * onto the stack.<a name="line.225"></a> |
| <FONT color="green">226</FONT> */<a name="line.226"></a> |
| <FONT color="green">227</FONT> public void translate(ClassGenerator classGen, MethodGenerator methodGen) {<a name="line.227"></a> |
| <FONT color="green">228</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.228"></a> |
| <FONT color="green">229</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.229"></a> |
| <FONT color="green">230</FONT> <a name="line.230"></a> |
| <FONT color="green">231</FONT> if (hasPredicates()) {<a name="line.231"></a> |
| <FONT color="green">232</FONT> translatePredicates(classGen, methodGen);<a name="line.232"></a> |
| <FONT color="green">233</FONT> } else {<a name="line.233"></a> |
| <FONT color="green">234</FONT> int star = 0;<a name="line.234"></a> |
| <FONT color="green">235</FONT> String name = null;<a name="line.235"></a> |
| <FONT color="green">236</FONT> final XSLTC xsltc = getParser().getXSLTC();<a name="line.236"></a> |
| <FONT color="green">237</FONT> <a name="line.237"></a> |
| <FONT color="green">238</FONT> if (_nodeType >= DTM.NTYPES) {<a name="line.238"></a> |
| <FONT color="green">239</FONT> final Vector ni = xsltc.getNamesIndex();<a name="line.239"></a> |
| <FONT color="green">240</FONT> <a name="line.240"></a> |
| <FONT color="green">241</FONT> name = (String)ni.elementAt(_nodeType-DTM.NTYPES);<a name="line.241"></a> |
| <FONT color="green">242</FONT> star = name.lastIndexOf('*');<a name="line.242"></a> |
| <FONT color="green">243</FONT> }<a name="line.243"></a> |
| <FONT color="green">244</FONT> <a name="line.244"></a> |
| <FONT color="green">245</FONT> // If it is an attribute, but not '@*', '@pre:*' or '@node()',<a name="line.245"></a> |
| <FONT color="green">246</FONT> // and has no parent<a name="line.246"></a> |
| <FONT color="green">247</FONT> if (_axis == Axis.ATTRIBUTE && _nodeType != NodeTest.ATTRIBUTE<a name="line.247"></a> |
| <FONT color="green">248</FONT> && _nodeType != NodeTest.ANODE && !hasParentPattern()<a name="line.248"></a> |
| <FONT color="green">249</FONT> && star == 0)<a name="line.249"></a> |
| <FONT color="green">250</FONT> {<a name="line.250"></a> |
| <FONT color="green">251</FONT> int iter = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.251"></a> |
| <FONT color="green">252</FONT> "getTypedAxisIterator",<a name="line.252"></a> |
| <FONT color="green">253</FONT> "(II)"+NODE_ITERATOR_SIG);<a name="line.253"></a> |
| <FONT color="green">254</FONT> il.append(methodGen.loadDOM());<a name="line.254"></a> |
| <FONT color="green">255</FONT> il.append(new PUSH(cpg, Axis.ATTRIBUTE));<a name="line.255"></a> |
| <FONT color="green">256</FONT> il.append(new PUSH(cpg, _nodeType));<a name="line.256"></a> |
| <FONT color="green">257</FONT> il.append(new INVOKEINTERFACE(iter, 3));<a name="line.257"></a> |
| <FONT color="green">258</FONT> return;<a name="line.258"></a> |
| <FONT color="green">259</FONT> }<a name="line.259"></a> |
| <FONT color="green">260</FONT> <a name="line.260"></a> |
| <FONT color="green">261</FONT> SyntaxTreeNode parent = getParent();<a name="line.261"></a> |
| <FONT color="green">262</FONT> // Special case for '.'<a name="line.262"></a> |
| <FONT color="green">263</FONT> if (isAbbreviatedDot()) {<a name="line.263"></a> |
| <FONT color="green">264</FONT> if (_type == Type.Node) {<a name="line.264"></a> |
| <FONT color="green">265</FONT> // Put context node on stack if using Type.Node<a name="line.265"></a> |
| <FONT color="green">266</FONT> il.append(methodGen.loadContextNode());<a name="line.266"></a> |
| <FONT color="green">267</FONT> }<a name="line.267"></a> |
| <FONT color="green">268</FONT> else {<a name="line.268"></a> |
| <FONT color="green">269</FONT> if (parent instanceof ParentLocationPath){<a name="line.269"></a> |
| <FONT color="green">270</FONT> // Wrap the context node in a singleton iterator if not.<a name="line.270"></a> |
| <FONT color="green">271</FONT> int init = cpg.addMethodref(SINGLETON_ITERATOR,<a name="line.271"></a> |
| <FONT color="green">272</FONT> "<init>",<a name="line.272"></a> |
| <FONT color="green">273</FONT> "("+NODE_SIG+")V");<a name="line.273"></a> |
| <FONT color="green">274</FONT> il.append(new NEW(cpg.addClass(SINGLETON_ITERATOR)));<a name="line.274"></a> |
| <FONT color="green">275</FONT> il.append(DUP);<a name="line.275"></a> |
| <FONT color="green">276</FONT> il.append(methodGen.loadContextNode());<a name="line.276"></a> |
| <FONT color="green">277</FONT> il.append(new INVOKESPECIAL(init));<a name="line.277"></a> |
| <FONT color="green">278</FONT> } else {<a name="line.278"></a> |
| <FONT color="green">279</FONT> // DOM.getAxisIterator(int axis);<a name="line.279"></a> |
| <FONT color="green">280</FONT> int git = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.280"></a> |
| <FONT color="green">281</FONT> "getAxisIterator",<a name="line.281"></a> |
| <FONT color="green">282</FONT> "(I)"+NODE_ITERATOR_SIG);<a name="line.282"></a> |
| <FONT color="green">283</FONT> il.append(methodGen.loadDOM());<a name="line.283"></a> |
| <FONT color="green">284</FONT> il.append(new PUSH(cpg, _axis));<a name="line.284"></a> |
| <FONT color="green">285</FONT> il.append(new INVOKEINTERFACE(git, 2));<a name="line.285"></a> |
| <FONT color="green">286</FONT> }<a name="line.286"></a> |
| <FONT color="green">287</FONT> }<a name="line.287"></a> |
| <FONT color="green">288</FONT> return;<a name="line.288"></a> |
| <FONT color="green">289</FONT> }<a name="line.289"></a> |
| <FONT color="green">290</FONT> <a name="line.290"></a> |
| <FONT color="green">291</FONT> // Special case for /foo/*/bar<a name="line.291"></a> |
| <FONT color="green">292</FONT> if ((parent instanceof ParentLocationPath) &&<a name="line.292"></a> |
| <FONT color="green">293</FONT> (parent.getParent() instanceof ParentLocationPath)) {<a name="line.293"></a> |
| <FONT color="green">294</FONT> if ((_nodeType == NodeTest.ELEMENT) && (!_hadPredicates)) {<a name="line.294"></a> |
| <FONT color="green">295</FONT> _nodeType = NodeTest.ANODE;<a name="line.295"></a> |
| <FONT color="green">296</FONT> }<a name="line.296"></a> |
| <FONT color="green">297</FONT> }<a name="line.297"></a> |
| <FONT color="green">298</FONT> <a name="line.298"></a> |
| <FONT color="green">299</FONT> // "ELEMENT" or "*" or "@*" or ".." or "@attr" with a parent.<a name="line.299"></a> |
| <FONT color="green">300</FONT> switch (_nodeType) {<a name="line.300"></a> |
| <FONT color="green">301</FONT> case NodeTest.ATTRIBUTE:<a name="line.301"></a> |
| <FONT color="green">302</FONT> _axis = Axis.ATTRIBUTE;<a name="line.302"></a> |
| <FONT color="green">303</FONT> case NodeTest.ANODE:<a name="line.303"></a> |
| <FONT color="green">304</FONT> // DOM.getAxisIterator(int axis);<a name="line.304"></a> |
| <FONT color="green">305</FONT> int git = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.305"></a> |
| <FONT color="green">306</FONT> "getAxisIterator",<a name="line.306"></a> |
| <FONT color="green">307</FONT> "(I)"+NODE_ITERATOR_SIG);<a name="line.307"></a> |
| <FONT color="green">308</FONT> il.append(methodGen.loadDOM());<a name="line.308"></a> |
| <FONT color="green">309</FONT> il.append(new PUSH(cpg, _axis));<a name="line.309"></a> |
| <FONT color="green">310</FONT> il.append(new INVOKEINTERFACE(git, 2));<a name="line.310"></a> |
| <FONT color="green">311</FONT> break;<a name="line.311"></a> |
| <FONT color="green">312</FONT> default:<a name="line.312"></a> |
| <FONT color="green">313</FONT> if (star > 1) {<a name="line.313"></a> |
| <FONT color="green">314</FONT> final String namespace;<a name="line.314"></a> |
| <FONT color="green">315</FONT> if (_axis == Axis.ATTRIBUTE)<a name="line.315"></a> |
| <FONT color="green">316</FONT> namespace = name.substring(0,star-2);<a name="line.316"></a> |
| <FONT color="green">317</FONT> else<a name="line.317"></a> |
| <FONT color="green">318</FONT> namespace = name.substring(0,star-1);<a name="line.318"></a> |
| <FONT color="green">319</FONT> <a name="line.319"></a> |
| <FONT color="green">320</FONT> final int nsType = xsltc.registerNamespace(namespace);<a name="line.320"></a> |
| <FONT color="green">321</FONT> final int ns = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.321"></a> |
| <FONT color="green">322</FONT> "getNamespaceAxisIterator",<a name="line.322"></a> |
| <FONT color="green">323</FONT> "(II)"+NODE_ITERATOR_SIG);<a name="line.323"></a> |
| <FONT color="green">324</FONT> il.append(methodGen.loadDOM());<a name="line.324"></a> |
| <FONT color="green">325</FONT> il.append(new PUSH(cpg, _axis));<a name="line.325"></a> |
| <FONT color="green">326</FONT> il.append(new PUSH(cpg, nsType));<a name="line.326"></a> |
| <FONT color="green">327</FONT> il.append(new INVOKEINTERFACE(ns, 3));<a name="line.327"></a> |
| <FONT color="green">328</FONT> break;<a name="line.328"></a> |
| <FONT color="green">329</FONT> }<a name="line.329"></a> |
| <FONT color="green">330</FONT> case NodeTest.ELEMENT:<a name="line.330"></a> |
| <FONT color="green">331</FONT> // DOM.getTypedAxisIterator(int axis, int type);<a name="line.331"></a> |
| <FONT color="green">332</FONT> final int ty = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.332"></a> |
| <FONT color="green">333</FONT> "getTypedAxisIterator",<a name="line.333"></a> |
| <FONT color="green">334</FONT> "(II)"+NODE_ITERATOR_SIG);<a name="line.334"></a> |
| <FONT color="green">335</FONT> // Get the typed iterator we're after<a name="line.335"></a> |
| <FONT color="green">336</FONT> il.append(methodGen.loadDOM());<a name="line.336"></a> |
| <FONT color="green">337</FONT> il.append(new PUSH(cpg, _axis));<a name="line.337"></a> |
| <FONT color="green">338</FONT> il.append(new PUSH(cpg, _nodeType));<a name="line.338"></a> |
| <FONT color="green">339</FONT> il.append(new INVOKEINTERFACE(ty, 3));<a name="line.339"></a> |
| <FONT color="green">340</FONT> <a name="line.340"></a> |
| <FONT color="green">341</FONT> break;<a name="line.341"></a> |
| <FONT color="green">342</FONT> }<a name="line.342"></a> |
| <FONT color="green">343</FONT> }<a name="line.343"></a> |
| <FONT color="green">344</FONT> }<a name="line.344"></a> |
| <FONT color="green">345</FONT> <a name="line.345"></a> |
| <FONT color="green">346</FONT> <a name="line.346"></a> |
| <FONT color="green">347</FONT> /**<a name="line.347"></a> |
| <FONT color="green">348</FONT> * Translate a sequence of predicates. Each predicate is translated<a name="line.348"></a> |
| <FONT color="green">349</FONT> * by constructing an instance of <code>CurrentNodeListIterator</code><a name="line.349"></a> |
| <FONT color="green">350</FONT> * which is initialized from another iterator (recursive call),<a name="line.350"></a> |
| <FONT color="green">351</FONT> * a filter and a closure (call to translate on the predicate) and "this". <a name="line.351"></a> |
| <FONT color="green">352</FONT> */<a name="line.352"></a> |
| <FONT color="green">353</FONT> public void translatePredicates(ClassGenerator classGen,<a name="line.353"></a> |
| <FONT color="green">354</FONT> MethodGenerator methodGen) {<a name="line.354"></a> |
| <FONT color="green">355</FONT> final ConstantPoolGen cpg = classGen.getConstantPool();<a name="line.355"></a> |
| <FONT color="green">356</FONT> final InstructionList il = methodGen.getInstructionList();<a name="line.356"></a> |
| <FONT color="green">357</FONT> <a name="line.357"></a> |
| <FONT color="green">358</FONT> int idx = 0;<a name="line.358"></a> |
| <FONT color="green">359</FONT> <a name="line.359"></a> |
| <FONT color="green">360</FONT> if (_predicates.size() == 0) {<a name="line.360"></a> |
| <FONT color="green">361</FONT> translate(classGen, methodGen);<a name="line.361"></a> |
| <FONT color="green">362</FONT> }<a name="line.362"></a> |
| <FONT color="green">363</FONT> else {<a name="line.363"></a> |
| <FONT color="green">364</FONT> final Predicate predicate = (Predicate)_predicates.lastElement();<a name="line.364"></a> |
| <FONT color="green">365</FONT> _predicates.remove(predicate);<a name="line.365"></a> |
| <FONT color="green">366</FONT> <a name="line.366"></a> |
| <FONT color="green">367</FONT> // Special case for predicates that can use the NodeValueIterator<a name="line.367"></a> |
| <FONT color="green">368</FONT> // instead of an auxiliary class. Certain path/predicates pairs<a name="line.368"></a> |
| <FONT color="green">369</FONT> // are translated into a base path, on top of which we place a<a name="line.369"></a> |
| <FONT color="green">370</FONT> // node value iterator that tests for the desired value:<a name="line.370"></a> |
| <FONT color="green">371</FONT> // foo[@attr = 'str'] -> foo/@attr + test(value='str')<a name="line.371"></a> |
| <FONT color="green">372</FONT> // foo[bar = 'str'] -> foo/bar + test(value='str')<a name="line.372"></a> |
| <FONT color="green">373</FONT> // foo/bar[. = 'str'] -> foo/bar + test(value='str')<a name="line.373"></a> |
| <FONT color="green">374</FONT> if (predicate.isNodeValueTest()) {<a name="line.374"></a> |
| <FONT color="green">375</FONT> Step step = predicate.getStep();<a name="line.375"></a> |
| <FONT color="green">376</FONT> <a name="line.376"></a> |
| <FONT color="green">377</FONT> il.append(methodGen.loadDOM());<a name="line.377"></a> |
| <FONT color="green">378</FONT> // If the predicate's Step is simply '.' we translate this Step<a name="line.378"></a> |
| <FONT color="green">379</FONT> // and place the node test on top of the resulting iterator<a name="line.379"></a> |
| <FONT color="green">380</FONT> if (step.isAbbreviatedDot()) {<a name="line.380"></a> |
| <FONT color="green">381</FONT> translate(classGen, methodGen);<a name="line.381"></a> |
| <FONT color="green">382</FONT> il.append(new ICONST(DOM.RETURN_CURRENT));<a name="line.382"></a> |
| <FONT color="green">383</FONT> }<a name="line.383"></a> |
| <FONT color="green">384</FONT> // Otherwise we create a parent location path with this Step and<a name="line.384"></a> |
| <FONT color="green">385</FONT> // the predicates Step, and place the node test on top of that<a name="line.385"></a> |
| <FONT color="green">386</FONT> else {<a name="line.386"></a> |
| <FONT color="green">387</FONT> ParentLocationPath path = new ParentLocationPath(this,step);<a name="line.387"></a> |
| <FONT color="green">388</FONT> try {<a name="line.388"></a> |
| <FONT color="green">389</FONT> path.typeCheck(getParser().getSymbolTable());<a name="line.389"></a> |
| <FONT color="green">390</FONT> }<a name="line.390"></a> |
| <FONT color="green">391</FONT> catch (TypeCheckError e) { }<a name="line.391"></a> |
| <FONT color="green">392</FONT> path.translate(classGen, methodGen);<a name="line.392"></a> |
| <FONT color="green">393</FONT> il.append(new ICONST(DOM.RETURN_PARENT));<a name="line.393"></a> |
| <FONT color="green">394</FONT> }<a name="line.394"></a> |
| <FONT color="green">395</FONT> predicate.translate(classGen, methodGen);<a name="line.395"></a> |
| <FONT color="green">396</FONT> idx = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.396"></a> |
| <FONT color="green">397</FONT> GET_NODE_VALUE_ITERATOR,<a name="line.397"></a> |
| <FONT color="green">398</FONT> GET_NODE_VALUE_ITERATOR_SIG);<a name="line.398"></a> |
| <FONT color="green">399</FONT> il.append(new INVOKEINTERFACE(idx, 5));<a name="line.399"></a> |
| <FONT color="green">400</FONT> } <a name="line.400"></a> |
| <FONT color="green">401</FONT> // Handle '//*[n]' expression<a name="line.401"></a> |
| <FONT color="green">402</FONT> else if (predicate.isNthDescendant()) {<a name="line.402"></a> |
| <FONT color="green">403</FONT> il.append(methodGen.loadDOM());<a name="line.403"></a> |
| <FONT color="green">404</FONT> // il.append(new ICONST(NodeTest.ELEMENT));<a name="line.404"></a> |
| <FONT color="green">405</FONT> il.append(new ICONST(predicate.getPosType()));<a name="line.405"></a> |
| <FONT color="green">406</FONT> predicate.translate(classGen, methodGen);<a name="line.406"></a> |
| <FONT color="green">407</FONT> il.append(new ICONST(0));<a name="line.407"></a> |
| <FONT color="green">408</FONT> idx = cpg.addInterfaceMethodref(DOM_INTF,<a name="line.408"></a> |
| <FONT color="green">409</FONT> "getNthDescendant",<a name="line.409"></a> |
| <FONT color="green">410</FONT> "(IIZ)"+NODE_ITERATOR_SIG);<a name="line.410"></a> |
| <FONT color="green">411</FONT> il.append(new INVOKEINTERFACE(idx, 4));<a name="line.411"></a> |
| <FONT color="green">412</FONT> }<a name="line.412"></a> |
| <FONT color="green">413</FONT> // Handle 'elem[n]' expression<a name="line.413"></a> |
| <FONT color="green">414</FONT> else if (predicate.isNthPositionFilter()) {<a name="line.414"></a> |
| <FONT color="green">415</FONT> idx = cpg.addMethodref(NTH_ITERATOR_CLASS,<a name="line.415"></a> |
| <FONT color="green">416</FONT> "<init>",<a name="line.416"></a> |
| <FONT color="green">417</FONT> "("+NODE_ITERATOR_SIG+"I)V");<a name="line.417"></a> |
| <FONT color="green">418</FONT> <a name="line.418"></a> |
| <FONT color="green">419</FONT> // Backwards branches are prohibited if an uninitialized object<a name="line.419"></a> |
| <FONT color="green">420</FONT> // is on the stack by section 4.9.4 of the JVM Specification,<a name="line.420"></a> |
| <FONT color="green">421</FONT> // 2nd Ed. We don't know whether this code might contain<a name="line.421"></a> |
| <FONT color="green">422</FONT> // backwards branches, so we mustn't create the new object until<a name="line.422"></a> |
| <FONT color="green">423</FONT> // after we've created the suspect arguments to its constructor.<a name="line.423"></a> |
| <FONT color="green">424</FONT> // Instead we calculate the values of the arguments to the<a name="line.424"></a> |
| <FONT color="green">425</FONT> // constructor first, store them in temporary variables, create<a name="line.425"></a> |
| <FONT color="green">426</FONT> // the object and reload the arguments from the temporaries to<a name="line.426"></a> |
| <FONT color="green">427</FONT> // avoid the problem.<a name="line.427"></a> |
| <FONT color="green">428</FONT> translatePredicates(classGen, methodGen); // recursive call<a name="line.428"></a> |
| <FONT color="green">429</FONT> LocalVariableGen iteratorTemp<a name="line.429"></a> |
| <FONT color="green">430</FONT> = methodGen.addLocalVariable("step_tmp1",<a name="line.430"></a> |
| <FONT color="green">431</FONT> Util.getJCRefType(NODE_ITERATOR_SIG),<a name="line.431"></a> |
| <FONT color="green">432</FONT> null, null);<a name="line.432"></a> |
| <FONT color="green">433</FONT> iteratorTemp.setStart(<a name="line.433"></a> |
| <FONT color="green">434</FONT> il.append(new ASTORE(iteratorTemp.getIndex())));<a name="line.434"></a> |
| <FONT color="green">435</FONT> <a name="line.435"></a> |
| <FONT color="green">436</FONT> predicate.translate(classGen, methodGen);<a name="line.436"></a> |
| <FONT color="green">437</FONT> LocalVariableGen predicateValueTemp<a name="line.437"></a> |
| <FONT color="green">438</FONT> = methodGen.addLocalVariable("step_tmp2",<a name="line.438"></a> |
| <FONT color="green">439</FONT> Util.getJCRefType("I"),<a name="line.439"></a> |
| <FONT color="green">440</FONT> null, null);<a name="line.440"></a> |
| <FONT color="green">441</FONT> predicateValueTemp.setStart(<a name="line.441"></a> |
| <FONT color="green">442</FONT> il.append(new ISTORE(predicateValueTemp.getIndex())));<a name="line.442"></a> |
| <FONT color="green">443</FONT> <a name="line.443"></a> |
| <FONT color="green">444</FONT> il.append(new NEW(cpg.addClass(NTH_ITERATOR_CLASS)));<a name="line.444"></a> |
| <FONT color="green">445</FONT> il.append(DUP);<a name="line.445"></a> |
| <FONT color="green">446</FONT> iteratorTemp.setEnd(<a name="line.446"></a> |
| <FONT color="green">447</FONT> il.append(new ALOAD(iteratorTemp.getIndex())));<a name="line.447"></a> |
| <FONT color="green">448</FONT> predicateValueTemp.setEnd(<a name="line.448"></a> |
| <FONT color="green">449</FONT> il.append(new ILOAD(predicateValueTemp.getIndex())));<a name="line.449"></a> |
| <FONT color="green">450</FONT> il.append(new INVOKESPECIAL(idx));<a name="line.450"></a> |
| <FONT color="green">451</FONT> }<a name="line.451"></a> |
| <FONT color="green">452</FONT> else {<a name="line.452"></a> |
| <FONT color="green">453</FONT> idx = cpg.addMethodref(CURRENT_NODE_LIST_ITERATOR,<a name="line.453"></a> |
| <FONT color="green">454</FONT> "<init>",<a name="line.454"></a> |
| <FONT color="green">455</FONT> "("<a name="line.455"></a> |
| <FONT color="green">456</FONT> + NODE_ITERATOR_SIG<a name="line.456"></a> |
| <FONT color="green">457</FONT> + CURRENT_NODE_LIST_FILTER_SIG<a name="line.457"></a> |
| <FONT color="green">458</FONT> + NODE_SIG<a name="line.458"></a> |
| <FONT color="green">459</FONT> + TRANSLET_SIG<a name="line.459"></a> |
| <FONT color="green">460</FONT> + ")V");<a name="line.460"></a> |
| <FONT color="green">461</FONT> <a name="line.461"></a> |
| <FONT color="green">462</FONT> // Backwards branches are prohibited if an uninitialized object<a name="line.462"></a> |
| <FONT color="green">463</FONT> // is on the stack by section 4.9.4 of the JVM Specification,<a name="line.463"></a> |
| <FONT color="green">464</FONT> // 2nd Ed. We don't know whether this code might contain<a name="line.464"></a> |
| <FONT color="green">465</FONT> // backwards branches, so we mustn't create the new object until<a name="line.465"></a> |
| <FONT color="green">466</FONT> // after we've created the suspect arguments to its constructor.<a name="line.466"></a> |
| <FONT color="green">467</FONT> // Instead we calculate the values of the arguments to the<a name="line.467"></a> |
| <FONT color="green">468</FONT> // constructor first, store them in temporary variables, create<a name="line.468"></a> |
| <FONT color="green">469</FONT> // the object and reload the arguments from the temporaries to<a name="line.469"></a> |
| <FONT color="green">470</FONT> // avoid the problem.<a name="line.470"></a> |
| <FONT color="green">471</FONT> translatePredicates(classGen, methodGen); // recursive call<a name="line.471"></a> |
| <FONT color="green">472</FONT> LocalVariableGen iteratorTemp<a name="line.472"></a> |
| <FONT color="green">473</FONT> = methodGen.addLocalVariable("step_tmp1",<a name="line.473"></a> |
| <FONT color="green">474</FONT> Util.getJCRefType(NODE_ITERATOR_SIG),<a name="line.474"></a> |
| <FONT color="green">475</FONT> null, null);<a name="line.475"></a> |
| <FONT color="green">476</FONT> iteratorTemp.setStart(<a name="line.476"></a> |
| <FONT color="green">477</FONT> il.append(new ASTORE(iteratorTemp.getIndex())));<a name="line.477"></a> |
| <FONT color="green">478</FONT> <a name="line.478"></a> |
| <FONT color="green">479</FONT> predicate.translateFilter(classGen, methodGen);<a name="line.479"></a> |
| <FONT color="green">480</FONT> LocalVariableGen filterTemp<a name="line.480"></a> |
| <FONT color="green">481</FONT> = methodGen.addLocalVariable("step_tmp2",<a name="line.481"></a> |
| <FONT color="green">482</FONT> Util.getJCRefType(CURRENT_NODE_LIST_FILTER_SIG),<a name="line.482"></a> |
| <FONT color="green">483</FONT> null, null);<a name="line.483"></a> |
| <FONT color="green">484</FONT> filterTemp.setStart(<a name="line.484"></a> |
| <FONT color="green">485</FONT> il.append(new ASTORE(filterTemp.getIndex())));<a name="line.485"></a> |
| <FONT color="green">486</FONT> <a name="line.486"></a> |
| <FONT color="green">487</FONT> // create new CurrentNodeListIterator<a name="line.487"></a> |
| <FONT color="green">488</FONT> il.append(new NEW(cpg.addClass(CURRENT_NODE_LIST_ITERATOR)));<a name="line.488"></a> |
| <FONT color="green">489</FONT> il.append(DUP);<a name="line.489"></a> |
| <FONT color="green">490</FONT> <a name="line.490"></a> |
| <FONT color="green">491</FONT> iteratorTemp.setEnd(<a name="line.491"></a> |
| <FONT color="green">492</FONT> il.append(new ALOAD(iteratorTemp.getIndex())));<a name="line.492"></a> |
| <FONT color="green">493</FONT> filterTemp.setEnd(il.append(new ALOAD(filterTemp.getIndex())));<a name="line.493"></a> |
| <FONT color="green">494</FONT> <a name="line.494"></a> |
| <FONT color="green">495</FONT> il.append(methodGen.loadCurrentNode());<a name="line.495"></a> |
| <FONT color="green">496</FONT> il.append(classGen.loadTranslet());<a name="line.496"></a> |
| <FONT color="green">497</FONT> if (classGen.isExternal()) {<a name="line.497"></a> |
| <FONT color="green">498</FONT> final String className = classGen.getClassName();<a name="line.498"></a> |
| <FONT color="green">499</FONT> il.append(new CHECKCAST(cpg.addClass(className)));<a name="line.499"></a> |
| <FONT color="green">500</FONT> }<a name="line.500"></a> |
| <FONT color="green">501</FONT> il.append(new INVOKESPECIAL(idx));<a name="line.501"></a> |
| <FONT color="green">502</FONT> }<a name="line.502"></a> |
| <FONT color="green">503</FONT> }<a name="line.503"></a> |
| <FONT color="green">504</FONT> }<a name="line.504"></a> |
| <FONT color="green">505</FONT> <a name="line.505"></a> |
| <FONT color="green">506</FONT> /**<a name="line.506"></a> |
| <FONT color="green">507</FONT> * Returns a string representation of this step.<a name="line.507"></a> |
| <FONT color="green">508</FONT> */<a name="line.508"></a> |
| <FONT color="green">509</FONT> public String toString() {<a name="line.509"></a> |
| <FONT color="green">510</FONT> final StringBuffer buffer = new StringBuffer("step(\"");<a name="line.510"></a> |
| <FONT color="green">511</FONT> buffer.append(Axis.getNames(_axis)).append("\", ").append(_nodeType);<a name="line.511"></a> |
| <FONT color="green">512</FONT> if (_predicates != null) {<a name="line.512"></a> |
| <FONT color="green">513</FONT> final int n = _predicates.size();<a name="line.513"></a> |
| <FONT color="green">514</FONT> for (int i = 0; i < n; i++) {<a name="line.514"></a> |
| <FONT color="green">515</FONT> final Predicate pred = (Predicate)_predicates.elementAt(i);<a name="line.515"></a> |
| <FONT color="green">516</FONT> buffer.append(", ").append(pred.toString());<a name="line.516"></a> |
| <FONT color="green">517</FONT> }<a name="line.517"></a> |
| <FONT color="green">518</FONT> }<a name="line.518"></a> |
| <FONT color="green">519</FONT> return buffer.append(')').toString();<a name="line.519"></a> |
| <FONT color="green">520</FONT> }<a name="line.520"></a> |
| <FONT color="green">521</FONT> }<a name="line.521"></a> |
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| </PRE> |
| </BODY> |
| </HTML> |
