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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: OpMap.java 468655 2006-10-28 07:12:06Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xpath.compiler;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import org.apache.xalan.res.XSLMessages;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import org.apache.xml.utils.ObjectVector;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import org.apache.xpath.patterns.NodeTest;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.xpath.res.XPATHErrorResources;<a name="line.26"></a> |
| <FONT color="green">027</FONT> <a name="line.27"></a> |
| <FONT color="green">028</FONT> /**<a name="line.28"></a> |
| <FONT color="green">029</FONT> * This class represents the data structure basics of the XPath<a name="line.29"></a> |
| <FONT color="green">030</FONT> * object.<a name="line.30"></a> |
| <FONT color="green">031</FONT> */<a name="line.31"></a> |
| <FONT color="green">032</FONT> public class OpMap<a name="line.32"></a> |
| <FONT color="green">033</FONT> {<a name="line.33"></a> |
| <FONT color="green">034</FONT> <a name="line.34"></a> |
| <FONT color="green">035</FONT> /**<a name="line.35"></a> |
| <FONT color="green">036</FONT> * The current pattern string, for diagnostics purposes<a name="line.36"></a> |
| <FONT color="green">037</FONT> */<a name="line.37"></a> |
| <FONT color="green">038</FONT> protected String m_currentPattern;<a name="line.38"></a> |
| <FONT color="green">039</FONT> <a name="line.39"></a> |
| <FONT color="green">040</FONT> /**<a name="line.40"></a> |
| <FONT color="green">041</FONT> * Return the expression as a string for diagnostics.<a name="line.41"></a> |
| <FONT color="green">042</FONT> *<a name="line.42"></a> |
| <FONT color="green">043</FONT> * @return The expression string.<a name="line.43"></a> |
| <FONT color="green">044</FONT> */<a name="line.44"></a> |
| <FONT color="green">045</FONT> public String toString()<a name="line.45"></a> |
| <FONT color="green">046</FONT> {<a name="line.46"></a> |
| <FONT color="green">047</FONT> return m_currentPattern;<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> /**<a name="line.50"></a> |
| <FONT color="green">051</FONT> * Return the expression as a string for diagnostics.<a name="line.51"></a> |
| <FONT color="green">052</FONT> *<a name="line.52"></a> |
| <FONT color="green">053</FONT> * @return The expression string.<a name="line.53"></a> |
| <FONT color="green">054</FONT> */<a name="line.54"></a> |
| <FONT color="green">055</FONT> public String getPatternString()<a name="line.55"></a> |
| <FONT color="green">056</FONT> {<a name="line.56"></a> |
| <FONT color="green">057</FONT> return m_currentPattern;<a name="line.57"></a> |
| <FONT color="green">058</FONT> }<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 starting size of the token queue.<a name="line.61"></a> |
| <FONT color="green">062</FONT> */<a name="line.62"></a> |
| <FONT color="green">063</FONT> static final int MAXTOKENQUEUESIZE = 500;<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> * Amount to grow token queue when it becomes full<a name="line.66"></a> |
| <FONT color="green">067</FONT> */<a name="line.67"></a> |
| <FONT color="green">068</FONT> static final int BLOCKTOKENQUEUESIZE = 500;<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> * TokenStack is the queue of used tokens. The current token is the token at the<a name="line.71"></a> |
| <FONT color="green">072</FONT> * end of the m_tokenQueue. The idea is that the queue can be marked and a sequence<a name="line.72"></a> |
| <FONT color="green">073</FONT> * of tokens can be reused.<a name="line.73"></a> |
| <FONT color="green">074</FONT> */<a name="line.74"></a> |
| <FONT color="green">075</FONT> ObjectVector m_tokenQueue = new ObjectVector(MAXTOKENQUEUESIZE, BLOCKTOKENQUEUESIZE);<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> * Get the XPath as a list of tokens.<a name="line.78"></a> |
| <FONT color="green">079</FONT> *<a name="line.79"></a> |
| <FONT color="green">080</FONT> * @return ObjectVector of tokens.<a name="line.80"></a> |
| <FONT color="green">081</FONT> */<a name="line.81"></a> |
| <FONT color="green">082</FONT> public ObjectVector getTokenQueue()<a name="line.82"></a> |
| <FONT color="green">083</FONT> {<a name="line.83"></a> |
| <FONT color="green">084</FONT> return m_tokenQueue;<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> /**<a name="line.87"></a> |
| <FONT color="green">088</FONT> * Get the XPath as a list of tokens.<a name="line.88"></a> |
| <FONT color="green">089</FONT> *<a name="line.89"></a> |
| <FONT color="green">090</FONT> * @param pos index into token queue.<a name="line.90"></a> |
| <FONT color="green">091</FONT> *<a name="line.91"></a> |
| <FONT color="green">092</FONT> * @return The token, normally a string.<a name="line.92"></a> |
| <FONT color="green">093</FONT> */<a name="line.93"></a> |
| <FONT color="green">094</FONT> public Object getToken(int pos)<a name="line.94"></a> |
| <FONT color="green">095</FONT> {<a name="line.95"></a> |
| <FONT color="green">096</FONT> return m_tokenQueue.elementAt(pos);<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> /**<a name="line.99"></a> |
| <FONT color="green">100</FONT> * The current size of the token queue.<a name="line.100"></a> |
| <FONT color="green">101</FONT> */<a name="line.101"></a> |
| <FONT color="green">102</FONT> // public int m_tokenQueueSize = 0;<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> * Get size of the token queue.<a name="line.105"></a> |
| <FONT color="green">106</FONT> *<a name="line.106"></a> |
| <FONT color="green">107</FONT> * @return The size of the token queue.<a name="line.107"></a> |
| <FONT color="green">108</FONT> */<a name="line.108"></a> |
| <FONT color="green">109</FONT> public int getTokenQueueSize()<a name="line.109"></a> |
| <FONT color="green">110</FONT> {<a name="line.110"></a> |
| <FONT color="green">111</FONT> return m_tokenQueue.size();<a name="line.111"></a> |
| <FONT color="green">112</FONT> <a name="line.112"></a> |
| <FONT color="green">113</FONT> }<a name="line.113"></a> |
| <FONT color="green">114</FONT> <a name="line.114"></a> |
| <FONT color="green">115</FONT> /**<a name="line.115"></a> |
| <FONT color="green">116</FONT> * An operations map is used instead of a proper parse tree. It contains<a name="line.116"></a> |
| <FONT color="green">117</FONT> * operations codes and indexes into the m_tokenQueue.<a name="line.117"></a> |
| <FONT color="green">118</FONT> * I use an array instead of a full parse tree in order to cut down<a name="line.118"></a> |
| <FONT color="green">119</FONT> * on the number of objects created.<a name="line.119"></a> |
| <FONT color="green">120</FONT> */<a name="line.120"></a> |
| <FONT color="green">121</FONT> OpMapVector m_opMap = null;<a name="line.121"></a> |
| <FONT color="green">122</FONT> <a name="line.122"></a> |
| <FONT color="green">123</FONT> /**<a name="line.123"></a> |
| <FONT color="green">124</FONT> * Get the opcode list that describes the XPath operations. It contains<a name="line.124"></a> |
| <FONT color="green">125</FONT> * operations codes and indexes into the m_tokenQueue.<a name="line.125"></a> |
| <FONT color="green">126</FONT> * I use an array instead of a full parse tree in order to cut down<a name="line.126"></a> |
| <FONT color="green">127</FONT> * on the number of objects created.<a name="line.127"></a> |
| <FONT color="green">128</FONT> *<a name="line.128"></a> |
| <FONT color="green">129</FONT> * @return An IntVector that is the opcode list that describes the XPath operations.<a name="line.129"></a> |
| <FONT color="green">130</FONT> */<a name="line.130"></a> |
| <FONT color="green">131</FONT> public OpMapVector getOpMap()<a name="line.131"></a> |
| <FONT color="green">132</FONT> {<a name="line.132"></a> |
| <FONT color="green">133</FONT> return m_opMap;<a name="line.133"></a> |
| <FONT color="green">134</FONT> }<a name="line.134"></a> |
| <FONT color="green">135</FONT> <a name="line.135"></a> |
| <FONT color="green">136</FONT> // Position indexes<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> * The length is always the opcode position + 1.<a name="line.139"></a> |
| <FONT color="green">140</FONT> * Length is always expressed as the opcode+length bytes,<a name="line.140"></a> |
| <FONT color="green">141</FONT> * so it is always 2 or greater.<a name="line.141"></a> |
| <FONT color="green">142</FONT> */<a name="line.142"></a> |
| <FONT color="green">143</FONT> public static final int MAPINDEX_LENGTH = 1;<a name="line.143"></a> |
| <FONT color="green">144</FONT> <a name="line.144"></a> |
| <FONT color="green">145</FONT> /**<a name="line.145"></a> |
| <FONT color="green">146</FONT> * Replace the large arrays<a name="line.146"></a> |
| <FONT color="green">147</FONT> * with a small array.<a name="line.147"></a> |
| <FONT color="green">148</FONT> */<a name="line.148"></a> |
| <FONT color="green">149</FONT> void shrink()<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> int n = m_opMap.elementAt(MAPINDEX_LENGTH);<a name="line.152"></a> |
| <FONT color="green">153</FONT> m_opMap.setToSize(n + 4);<a name="line.153"></a> |
| <FONT color="green">154</FONT> <a name="line.154"></a> |
| <FONT color="green">155</FONT> m_opMap.setElementAt(0,n);<a name="line.155"></a> |
| <FONT color="green">156</FONT> m_opMap.setElementAt(0,n+1);<a name="line.156"></a> |
| <FONT color="green">157</FONT> m_opMap.setElementAt(0,n+2);<a name="line.157"></a> |
| <FONT color="green">158</FONT> <a name="line.158"></a> |
| <FONT color="green">159</FONT> <a name="line.159"></a> |
| <FONT color="green">160</FONT> n = m_tokenQueue.size();<a name="line.160"></a> |
| <FONT color="green">161</FONT> m_tokenQueue.setToSize(n + 4);<a name="line.161"></a> |
| <FONT color="green">162</FONT> <a name="line.162"></a> |
| <FONT color="green">163</FONT> m_tokenQueue.setElementAt(null,n);<a name="line.163"></a> |
| <FONT color="green">164</FONT> m_tokenQueue.setElementAt(null,n + 1);<a name="line.164"></a> |
| <FONT color="green">165</FONT> m_tokenQueue.setElementAt(null,n + 2);<a name="line.165"></a> |
| <FONT color="green">166</FONT> }<a name="line.166"></a> |
| <FONT color="green">167</FONT> <a name="line.167"></a> |
| <FONT color="green">168</FONT> /**<a name="line.168"></a> |
| <FONT color="green">169</FONT> * Given an operation position, return the current op.<a name="line.169"></a> |
| <FONT color="green">170</FONT> *<a name="line.170"></a> |
| <FONT color="green">171</FONT> * @param opPos index into op map.<a name="line.171"></a> |
| <FONT color="green">172</FONT> * @return the op that corresponds to the opPos argument.<a name="line.172"></a> |
| <FONT color="green">173</FONT> */<a name="line.173"></a> |
| <FONT color="green">174</FONT> public int getOp(int opPos)<a name="line.174"></a> |
| <FONT color="green">175</FONT> {<a name="line.175"></a> |
| <FONT color="green">176</FONT> return m_opMap.elementAt(opPos);<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> /**<a name="line.179"></a> |
| <FONT color="green">180</FONT> * Set the op at index to the given int.<a name="line.180"></a> |
| <FONT color="green">181</FONT> *<a name="line.181"></a> |
| <FONT color="green">182</FONT> * @param opPos index into op map.<a name="line.182"></a> |
| <FONT color="green">183</FONT> * @param value Value to set<a name="line.183"></a> |
| <FONT color="green">184</FONT> */<a name="line.184"></a> |
| <FONT color="green">185</FONT> public void setOp(int opPos, int value)<a name="line.185"></a> |
| <FONT color="green">186</FONT> {<a name="line.186"></a> |
| <FONT color="green">187</FONT> m_opMap.setElementAt(value,opPos);<a name="line.187"></a> |
| <FONT color="green">188</FONT> }<a name="line.188"></a> |
| <FONT color="green">189</FONT> <a name="line.189"></a> |
| <FONT color="green">190</FONT> /**<a name="line.190"></a> |
| <FONT color="green">191</FONT> * Given an operation position, return the end position, i.e. the<a name="line.191"></a> |
| <FONT color="green">192</FONT> * beginning of the next operation.<a name="line.192"></a> |
| <FONT color="green">193</FONT> *<a name="line.193"></a> |
| <FONT color="green">194</FONT> * @param opPos An op position of an operation for which there is a size <a name="line.194"></a> |
| <FONT color="green">195</FONT> * entry following.<a name="line.195"></a> |
| <FONT color="green">196</FONT> * @return position of next operation in m_opMap.<a name="line.196"></a> |
| <FONT color="green">197</FONT> */<a name="line.197"></a> |
| <FONT color="green">198</FONT> public int getNextOpPos(int opPos)<a name="line.198"></a> |
| <FONT color="green">199</FONT> {<a name="line.199"></a> |
| <FONT color="green">200</FONT> return opPos + m_opMap.elementAt(opPos + 1);<a name="line.200"></a> |
| <FONT color="green">201</FONT> }<a name="line.201"></a> |
| <FONT color="green">202</FONT> <a name="line.202"></a> |
| <FONT color="green">203</FONT> /**<a name="line.203"></a> |
| <FONT color="green">204</FONT> * Given a location step position, return the end position, i.e. the<a name="line.204"></a> |
| <FONT color="green">205</FONT> * beginning of the next step.<a name="line.205"></a> |
| <FONT color="green">206</FONT> *<a name="line.206"></a> |
| <FONT color="green">207</FONT> * @param opPos the position of a location step.<a name="line.207"></a> |
| <FONT color="green">208</FONT> * @return the position of the next location step.<a name="line.208"></a> |
| <FONT color="green">209</FONT> */<a name="line.209"></a> |
| <FONT color="green">210</FONT> public int getNextStepPos(int opPos)<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> int stepType = getOp(opPos);<a name="line.213"></a> |
| <FONT color="green">214</FONT> <a name="line.214"></a> |
| <FONT color="green">215</FONT> if ((stepType >= OpCodes.AXES_START_TYPES)<a name="line.215"></a> |
| <FONT color="green">216</FONT> && (stepType <= OpCodes.AXES_END_TYPES))<a name="line.216"></a> |
| <FONT color="green">217</FONT> {<a name="line.217"></a> |
| <FONT color="green">218</FONT> return getNextOpPos(opPos);<a name="line.218"></a> |
| <FONT color="green">219</FONT> }<a name="line.219"></a> |
| <FONT color="green">220</FONT> else if ((stepType >= OpCodes.FIRST_NODESET_OP)<a name="line.220"></a> |
| <FONT color="green">221</FONT> && (stepType <= OpCodes.LAST_NODESET_OP))<a name="line.221"></a> |
| <FONT color="green">222</FONT> {<a name="line.222"></a> |
| <FONT color="green">223</FONT> int newOpPos = getNextOpPos(opPos);<a name="line.223"></a> |
| <FONT color="green">224</FONT> <a name="line.224"></a> |
| <FONT color="green">225</FONT> while (OpCodes.OP_PREDICATE == getOp(newOpPos))<a name="line.225"></a> |
| <FONT color="green">226</FONT> {<a name="line.226"></a> |
| <FONT color="green">227</FONT> newOpPos = getNextOpPos(newOpPos);<a name="line.227"></a> |
| <FONT color="green">228</FONT> }<a name="line.228"></a> |
| <FONT color="green">229</FONT> <a name="line.229"></a> |
| <FONT color="green">230</FONT> stepType = getOp(newOpPos);<a name="line.230"></a> |
| <FONT color="green">231</FONT> <a name="line.231"></a> |
| <FONT color="green">232</FONT> if (!((stepType >= OpCodes.AXES_START_TYPES)<a name="line.232"></a> |
| <FONT color="green">233</FONT> && (stepType <= OpCodes.AXES_END_TYPES)))<a name="line.233"></a> |
| <FONT color="green">234</FONT> {<a name="line.234"></a> |
| <FONT color="green">235</FONT> return OpCodes.ENDOP;<a name="line.235"></a> |
| <FONT color="green">236</FONT> }<a name="line.236"></a> |
| <FONT color="green">237</FONT> <a name="line.237"></a> |
| <FONT color="green">238</FONT> return newOpPos;<a name="line.238"></a> |
| <FONT color="green">239</FONT> }<a name="line.239"></a> |
| <FONT color="green">240</FONT> else<a name="line.240"></a> |
| <FONT color="green">241</FONT> {<a name="line.241"></a> |
| <FONT color="green">242</FONT> throw new RuntimeException(<a name="line.242"></a> |
| <FONT color="green">243</FONT> XSLMessages.createXPATHMessage(XPATHErrorResources.ER_UNKNOWN_STEP, new Object[]{String.valueOf(stepType)})); <a name="line.243"></a> |
| <FONT color="green">244</FONT> //"Programmer's assertion in getNextStepPos: unknown stepType: " + stepType);<a name="line.244"></a> |
| <FONT color="green">245</FONT> }<a name="line.245"></a> |
| <FONT color="green">246</FONT> }<a name="line.246"></a> |
| <FONT color="green">247</FONT> <a name="line.247"></a> |
| <FONT color="green">248</FONT> /**<a name="line.248"></a> |
| <FONT color="green">249</FONT> * Given an operation position, return the end position, i.e. the<a name="line.249"></a> |
| <FONT color="green">250</FONT> * beginning of the next operation.<a name="line.250"></a> |
| <FONT color="green">251</FONT> *<a name="line.251"></a> |
| <FONT color="green">252</FONT> * @param opMap The operations map.<a name="line.252"></a> |
| <FONT color="green">253</FONT> * @param opPos index to operation, for which there is a size entry following.<a name="line.253"></a> |
| <FONT color="green">254</FONT> * @return position of next operation in m_opMap.<a name="line.254"></a> |
| <FONT color="green">255</FONT> */<a name="line.255"></a> |
| <FONT color="green">256</FONT> public static int getNextOpPos(int[] opMap, int opPos)<a name="line.256"></a> |
| <FONT color="green">257</FONT> {<a name="line.257"></a> |
| <FONT color="green">258</FONT> return opPos + opMap[opPos + 1];<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> /**<a name="line.261"></a> |
| <FONT color="green">262</FONT> * Given an FROM_stepType position, return the position of the<a name="line.262"></a> |
| <FONT color="green">263</FONT> * first predicate, if there is one, or else this will point<a name="line.263"></a> |
| <FONT color="green">264</FONT> * to the end of the FROM_stepType.<a name="line.264"></a> |
| <FONT color="green">265</FONT> * Example:<a name="line.265"></a> |
| <FONT color="green">266</FONT> * int posOfPredicate = xpath.getNextOpPos(stepPos);<a name="line.266"></a> |
| <FONT color="green">267</FONT> * boolean hasPredicates =<a name="line.267"></a> |
| <FONT color="green">268</FONT> * OpCodes.OP_PREDICATE == xpath.getOp(posOfPredicate);<a name="line.268"></a> |
| <FONT color="green">269</FONT> *<a name="line.269"></a> |
| <FONT color="green">270</FONT> * @param opPos position of FROM_stepType op. <a name="line.270"></a> |
| <FONT color="green">271</FONT> * @return position of predicate in FROM_stepType structure.<a name="line.271"></a> |
| <FONT color="green">272</FONT> */<a name="line.272"></a> |
| <FONT color="green">273</FONT> public int getFirstPredicateOpPos(int opPos)<a name="line.273"></a> |
| <FONT color="green">274</FONT> throws javax.xml.transform.TransformerException<a name="line.274"></a> |
| <FONT color="green">275</FONT> {<a name="line.275"></a> |
| <FONT color="green">276</FONT> <a name="line.276"></a> |
| <FONT color="green">277</FONT> int stepType = m_opMap.elementAt(opPos);<a name="line.277"></a> |
| <FONT color="green">278</FONT> <a name="line.278"></a> |
| <FONT color="green">279</FONT> if ((stepType >= OpCodes.AXES_START_TYPES)<a name="line.279"></a> |
| <FONT color="green">280</FONT> && (stepType <= OpCodes.AXES_END_TYPES))<a name="line.280"></a> |
| <FONT color="green">281</FONT> {<a name="line.281"></a> |
| <FONT color="green">282</FONT> return opPos + m_opMap.elementAt(opPos + 2);<a name="line.282"></a> |
| <FONT color="green">283</FONT> }<a name="line.283"></a> |
| <FONT color="green">284</FONT> else if ((stepType >= OpCodes.FIRST_NODESET_OP)<a name="line.284"></a> |
| <FONT color="green">285</FONT> && (stepType <= OpCodes.LAST_NODESET_OP))<a name="line.285"></a> |
| <FONT color="green">286</FONT> {<a name="line.286"></a> |
| <FONT color="green">287</FONT> return opPos + m_opMap.elementAt(opPos + 1);<a name="line.287"></a> |
| <FONT color="green">288</FONT> }<a name="line.288"></a> |
| <FONT color="green">289</FONT> else if(-2 == stepType)<a name="line.289"></a> |
| <FONT color="green">290</FONT> {<a name="line.290"></a> |
| <FONT color="green">291</FONT> return -2;<a name="line.291"></a> |
| <FONT color="green">292</FONT> }<a name="line.292"></a> |
| <FONT color="green">293</FONT> else<a name="line.293"></a> |
| <FONT color="green">294</FONT> {<a name="line.294"></a> |
| <FONT color="green">295</FONT> error(org.apache.xpath.res.XPATHErrorResources.ER_UNKNOWN_OPCODE,<a name="line.295"></a> |
| <FONT color="green">296</FONT> new Object[]{ String.valueOf(stepType) }); //"ERROR! Unknown op code: "+m_opMap[opPos]);<a name="line.296"></a> |
| <FONT color="green">297</FONT> return -1;<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> |
| <FONT color="green">300</FONT> <a name="line.300"></a> |
| <FONT color="green">301</FONT> /**<a name="line.301"></a> |
| <FONT color="green">302</FONT> * Tell the user of an error, and probably throw an<a name="line.302"></a> |
| <FONT color="green">303</FONT> * exception.<a name="line.303"></a> |
| <FONT color="green">304</FONT> *<a name="line.304"></a> |
| <FONT color="green">305</FONT> * @param msg An error msgkey that corresponds to one of the constants found <a name="line.305"></a> |
| <FONT color="green">306</FONT> * in {@link org.apache.xpath.res.XPATHErrorResources}, which is <a name="line.306"></a> |
| <FONT color="green">307</FONT> * a key for a format string.<a name="line.307"></a> |
| <FONT color="green">308</FONT> * @param args An array of arguments represented in the format string, which <a name="line.308"></a> |
| <FONT color="green">309</FONT> * may be null.<a name="line.309"></a> |
| <FONT color="green">310</FONT> *<a name="line.310"></a> |
| <FONT color="green">311</FONT> * @throws TransformerException if the current ErrorListoner determines to <a name="line.311"></a> |
| <FONT color="green">312</FONT> * throw an exception.<a name="line.312"></a> |
| <FONT color="green">313</FONT> */<a name="line.313"></a> |
| <FONT color="green">314</FONT> public void error(String msg, Object[] args) throws javax.xml.transform.TransformerException<a name="line.314"></a> |
| <FONT color="green">315</FONT> {<a name="line.315"></a> |
| <FONT color="green">316</FONT> <a name="line.316"></a> |
| <FONT color="green">317</FONT> java.lang.String fmsg = org.apache.xalan.res.XSLMessages.createXPATHMessage(msg, args);<a name="line.317"></a> |
| <FONT color="green">318</FONT> <a name="line.318"></a> |
| <FONT color="green">319</FONT> <a name="line.319"></a> |
| <FONT color="green">320</FONT> throw new javax.xml.transform.TransformerException(fmsg);<a name="line.320"></a> |
| <FONT color="green">321</FONT> }<a name="line.321"></a> |
| <FONT color="green">322</FONT> <a name="line.322"></a> |
| <FONT color="green">323</FONT> <a name="line.323"></a> |
| <FONT color="green">324</FONT> /**<a name="line.324"></a> |
| <FONT color="green">325</FONT> * Go to the first child of a given operation.<a name="line.325"></a> |
| <FONT color="green">326</FONT> *<a name="line.326"></a> |
| <FONT color="green">327</FONT> * @param opPos position of operation.<a name="line.327"></a> |
| <FONT color="green">328</FONT> *<a name="line.328"></a> |
| <FONT color="green">329</FONT> * @return The position of the first child of the operation.<a name="line.329"></a> |
| <FONT color="green">330</FONT> */<a name="line.330"></a> |
| <FONT color="green">331</FONT> public static int getFirstChildPos(int opPos)<a name="line.331"></a> |
| <FONT color="green">332</FONT> {<a name="line.332"></a> |
| <FONT color="green">333</FONT> return opPos + 2;<a name="line.333"></a> |
| <FONT color="green">334</FONT> }<a name="line.334"></a> |
| <FONT color="green">335</FONT> <a name="line.335"></a> |
| <FONT color="green">336</FONT> /**<a name="line.336"></a> |
| <FONT color="green">337</FONT> * Get the length of an operation.<a name="line.337"></a> |
| <FONT color="green">338</FONT> *<a name="line.338"></a> |
| <FONT color="green">339</FONT> * @param opPos The position of the operation in the op map.<a name="line.339"></a> |
| <FONT color="green">340</FONT> *<a name="line.340"></a> |
| <FONT color="green">341</FONT> * @return The size of the operation.<a name="line.341"></a> |
| <FONT color="green">342</FONT> */<a name="line.342"></a> |
| <FONT color="green">343</FONT> public int getArgLength(int opPos)<a name="line.343"></a> |
| <FONT color="green">344</FONT> {<a name="line.344"></a> |
| <FONT color="green">345</FONT> return m_opMap.elementAt(opPos + MAPINDEX_LENGTH);<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> /**<a name="line.348"></a> |
| <FONT color="green">349</FONT> * Given a location step, get the length of that step.<a name="line.349"></a> |
| <FONT color="green">350</FONT> *<a name="line.350"></a> |
| <FONT color="green">351</FONT> * @param opPos Position of location step in op map.<a name="line.351"></a> |
| <FONT color="green">352</FONT> *<a name="line.352"></a> |
| <FONT color="green">353</FONT> * @return The length of the step.<a name="line.353"></a> |
| <FONT color="green">354</FONT> */<a name="line.354"></a> |
| <FONT color="green">355</FONT> public int getArgLengthOfStep(int opPos)<a name="line.355"></a> |
| <FONT color="green">356</FONT> {<a name="line.356"></a> |
| <FONT color="green">357</FONT> return m_opMap.elementAt(opPos + MAPINDEX_LENGTH + 1) - 3;<a name="line.357"></a> |
| <FONT color="green">358</FONT> }<a name="line.358"></a> |
| <FONT color="green">359</FONT> <a name="line.359"></a> |
| <FONT color="green">360</FONT> /**<a name="line.360"></a> |
| <FONT color="green">361</FONT> * Get the first child position of a given location step.<a name="line.361"></a> |
| <FONT color="green">362</FONT> *<a name="line.362"></a> |
| <FONT color="green">363</FONT> * @param opPos Position of location step in the location map.<a name="line.363"></a> |
| <FONT color="green">364</FONT> *<a name="line.364"></a> |
| <FONT color="green">365</FONT> * @return The first child position of the step.<a name="line.365"></a> |
| <FONT color="green">366</FONT> */<a name="line.366"></a> |
| <FONT color="green">367</FONT> public static int getFirstChildPosOfStep(int opPos)<a name="line.367"></a> |
| <FONT color="green">368</FONT> {<a name="line.368"></a> |
| <FONT color="green">369</FONT> return opPos + 3;<a name="line.369"></a> |
| <FONT color="green">370</FONT> }<a name="line.370"></a> |
| <FONT color="green">371</FONT> <a name="line.371"></a> |
| <FONT color="green">372</FONT> /**<a name="line.372"></a> |
| <FONT color="green">373</FONT> * Get the test type of the step, i.e. NODETYPE_XXX value.<a name="line.373"></a> |
| <FONT color="green">374</FONT> * <a name="line.374"></a> |
| <FONT color="green">375</FONT> * @param opPosOfStep The position of the FROM_XXX step.<a name="line.375"></a> |
| <FONT color="green">376</FONT> *<a name="line.376"></a> |
| <FONT color="green">377</FONT> * @return NODETYPE_XXX value.<a name="line.377"></a> |
| <FONT color="green">378</FONT> */<a name="line.378"></a> |
| <FONT color="green">379</FONT> public int getStepTestType(int opPosOfStep)<a name="line.379"></a> |
| <FONT color="green">380</FONT> {<a name="line.380"></a> |
| <FONT color="green">381</FONT> return m_opMap.elementAt(opPosOfStep + 3); // skip past op, len, len without predicates<a name="line.381"></a> |
| <FONT color="green">382</FONT> }<a name="line.382"></a> |
| <FONT color="green">383</FONT> <a name="line.383"></a> |
| <FONT color="green">384</FONT> /**<a name="line.384"></a> |
| <FONT color="green">385</FONT> * Get the namespace of the step.<a name="line.385"></a> |
| <FONT color="green">386</FONT> * <a name="line.386"></a> |
| <FONT color="green">387</FONT> * @param opPosOfStep The position of the FROM_XXX step.<a name="line.387"></a> |
| <FONT color="green">388</FONT> *<a name="line.388"></a> |
| <FONT color="green">389</FONT> * @return The step's namespace, NodeTest.WILD, or null for null namespace.<a name="line.389"></a> |
| <FONT color="green">390</FONT> */<a name="line.390"></a> |
| <FONT color="green">391</FONT> public String getStepNS(int opPosOfStep)<a name="line.391"></a> |
| <FONT color="green">392</FONT> {<a name="line.392"></a> |
| <FONT color="green">393</FONT> <a name="line.393"></a> |
| <FONT color="green">394</FONT> int argLenOfStep = getArgLengthOfStep(opPosOfStep);<a name="line.394"></a> |
| <FONT color="green">395</FONT> <a name="line.395"></a> |
| <FONT color="green">396</FONT> // System.out.println("getStepNS.argLenOfStep: "+argLenOfStep);<a name="line.396"></a> |
| <FONT color="green">397</FONT> if (argLenOfStep == 3)<a name="line.397"></a> |
| <FONT color="green">398</FONT> {<a name="line.398"></a> |
| <FONT color="green">399</FONT> int index = m_opMap.elementAt(opPosOfStep + 4);<a name="line.399"></a> |
| <FONT color="green">400</FONT> <a name="line.400"></a> |
| <FONT color="green">401</FONT> if (index >= 0)<a name="line.401"></a> |
| <FONT color="green">402</FONT> return (String) m_tokenQueue.elementAt(index);<a name="line.402"></a> |
| <FONT color="green">403</FONT> else if (OpCodes.ELEMWILDCARD == index)<a name="line.403"></a> |
| <FONT color="green">404</FONT> return NodeTest.WILD;<a name="line.404"></a> |
| <FONT color="green">405</FONT> else<a name="line.405"></a> |
| <FONT color="green">406</FONT> return null;<a name="line.406"></a> |
| <FONT color="green">407</FONT> }<a name="line.407"></a> |
| <FONT color="green">408</FONT> else<a name="line.408"></a> |
| <FONT color="green">409</FONT> return null;<a name="line.409"></a> |
| <FONT color="green">410</FONT> }<a name="line.410"></a> |
| <FONT color="green">411</FONT> <a name="line.411"></a> |
| <FONT color="green">412</FONT> /**<a name="line.412"></a> |
| <FONT color="green">413</FONT> * Get the local name of the step.<a name="line.413"></a> |
| <FONT color="green">414</FONT> * @param opPosOfStep The position of the FROM_XXX step.<a name="line.414"></a> |
| <FONT color="green">415</FONT> *<a name="line.415"></a> |
| <FONT color="green">416</FONT> * @return OpCodes.EMPTY, OpCodes.ELEMWILDCARD, or the local name.<a name="line.416"></a> |
| <FONT color="green">417</FONT> */<a name="line.417"></a> |
| <FONT color="green">418</FONT> public String getStepLocalName(int opPosOfStep)<a name="line.418"></a> |
| <FONT color="green">419</FONT> {<a name="line.419"></a> |
| <FONT color="green">420</FONT> <a name="line.420"></a> |
| <FONT color="green">421</FONT> int argLenOfStep = getArgLengthOfStep(opPosOfStep);<a name="line.421"></a> |
| <FONT color="green">422</FONT> <a name="line.422"></a> |
| <FONT color="green">423</FONT> // System.out.println("getStepLocalName.argLenOfStep: "+argLenOfStep);<a name="line.423"></a> |
| <FONT color="green">424</FONT> int index;<a name="line.424"></a> |
| <FONT color="green">425</FONT> <a name="line.425"></a> |
| <FONT color="green">426</FONT> switch (argLenOfStep)<a name="line.426"></a> |
| <FONT color="green">427</FONT> {<a name="line.427"></a> |
| <FONT color="green">428</FONT> case 0 :<a name="line.428"></a> |
| <FONT color="green">429</FONT> index = OpCodes.EMPTY;<a name="line.429"></a> |
| <FONT color="green">430</FONT> break;<a name="line.430"></a> |
| <FONT color="green">431</FONT> case 1 :<a name="line.431"></a> |
| <FONT color="green">432</FONT> index = OpCodes.ELEMWILDCARD;<a name="line.432"></a> |
| <FONT color="green">433</FONT> break;<a name="line.433"></a> |
| <FONT color="green">434</FONT> case 2 :<a name="line.434"></a> |
| <FONT color="green">435</FONT> index = m_opMap.elementAt(opPosOfStep + 4);<a name="line.435"></a> |
| <FONT color="green">436</FONT> break;<a name="line.436"></a> |
| <FONT color="green">437</FONT> case 3 :<a name="line.437"></a> |
| <FONT color="green">438</FONT> index = m_opMap.elementAt(opPosOfStep + 5);<a name="line.438"></a> |
| <FONT color="green">439</FONT> break;<a name="line.439"></a> |
| <FONT color="green">440</FONT> default :<a name="line.440"></a> |
| <FONT color="green">441</FONT> index = OpCodes.EMPTY;<a name="line.441"></a> |
| <FONT color="green">442</FONT> break; // Should assert error<a name="line.442"></a> |
| <FONT color="green">443</FONT> }<a name="line.443"></a> |
| <FONT color="green">444</FONT> <a name="line.444"></a> |
| <FONT color="green">445</FONT> // int index = (argLenOfStep == 3) ? m_opMap[opPosOfStep+5] <a name="line.445"></a> |
| <FONT color="green">446</FONT> // : ((argLenOfStep == 1) ? -3 : -2);<a name="line.446"></a> |
| <FONT color="green">447</FONT> if (index >= 0)<a name="line.447"></a> |
| <FONT color="green">448</FONT> return (String) m_tokenQueue.elementAt(index).toString();<a name="line.448"></a> |
| <FONT color="green">449</FONT> else if (OpCodes.ELEMWILDCARD == index)<a name="line.449"></a> |
| <FONT color="green">450</FONT> return NodeTest.WILD;<a name="line.450"></a> |
| <FONT color="green">451</FONT> else<a name="line.451"></a> |
| <FONT color="green">452</FONT> return null;<a name="line.452"></a> |
| <FONT color="green">453</FONT> }<a name="line.453"></a> |
| <FONT color="green">454</FONT> <a name="line.454"></a> |
| <FONT color="green">455</FONT> }<a name="line.455"></a> |
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