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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: TransformSnapshotImpl.java 468645 2006-10-28 06:57:24Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xalan.transformer;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import java.util.Enumeration;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.util.Stack;<a name="line.24"></a> |
| <FONT color="green">025</FONT> <a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.apache.xml.dtm.DTMIterator;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.xml.utils.BoolStack;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.xml.utils.IntStack;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.xml.utils.NamespaceSupport2;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.xml.utils.NodeVector;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.xml.utils.ObjectStack;<a name="line.31"></a> |
| <FONT color="green">032</FONT> import org.apache.xpath.VariableStack;<a name="line.32"></a> |
| <FONT color="green">033</FONT> import org.apache.xpath.XPathContext;<a name="line.33"></a> |
| <FONT color="green">034</FONT> <a name="line.34"></a> |
| <FONT color="green">035</FONT> import org.xml.sax.helpers.NamespaceSupport;<a name="line.35"></a> |
| <FONT color="green">036</FONT> <a name="line.36"></a> |
| <FONT color="green">037</FONT> import org.apache.xml.serializer.NamespaceMappings;<a name="line.37"></a> |
| <FONT color="green">038</FONT> import org.apache.xml.serializer.SerializationHandler;<a name="line.38"></a> |
| <FONT color="green">039</FONT> /**<a name="line.39"></a> |
| <FONT color="green">040</FONT> * This class holds a "snapshot" of it's current transformer state,<a name="line.40"></a> |
| <FONT color="green">041</FONT> * which can later be restored.<a name="line.41"></a> |
| <FONT color="green">042</FONT> *<a name="line.42"></a> |
| <FONT color="green">043</FONT> * This only saves state which can change over the course of the side-effect-free<a name="line.43"></a> |
| <FONT color="green">044</FONT> * (i.e. no extensions that call setURIResolver, etc.).<a name="line.44"></a> |
| <FONT color="green">045</FONT> * <a name="line.45"></a> |
| <FONT color="green">046</FONT> * @deprecated It doesn't look like this code, which is for tooling, has<a name="line.46"></a> |
| <FONT color="green">047</FONT> * functioned propery for a while, so it doesn't look like it is being used.<a name="line.47"></a> |
| <FONT color="green">048</FONT> */<a name="line.48"></a> |
| <FONT color="green">049</FONT> class TransformSnapshotImpl implements TransformSnapshot<a name="line.49"></a> |
| <FONT color="green">050</FONT> {<a name="line.50"></a> |
| <FONT color="green">051</FONT> <a name="line.51"></a> |
| <FONT color="green">052</FONT> /**<a name="line.52"></a> |
| <FONT color="green">053</FONT> * The stack of Variable stack frames.<a name="line.53"></a> |
| <FONT color="green">054</FONT> */<a name="line.54"></a> |
| <FONT color="green">055</FONT> private VariableStack m_variableStacks;<a name="line.55"></a> |
| <FONT color="green">056</FONT> <a name="line.56"></a> |
| <FONT color="green">057</FONT> /**<a name="line.57"></a> |
| <FONT color="green">058</FONT> * The stack of <a href="http://www.w3.org/TR/xslt#dt-current-node">current node</a> objects.<a name="line.58"></a> |
| <FONT color="green">059</FONT> * Not to be confused with the current node list. <a name="line.59"></a> |
| <FONT color="green">060</FONT> */<a name="line.60"></a> |
| <FONT color="green">061</FONT> private IntStack m_currentNodes;<a name="line.61"></a> |
| <FONT color="green">062</FONT> <a name="line.62"></a> |
| <FONT color="green">063</FONT> /** A stack of the current sub-expression nodes. */<a name="line.63"></a> |
| <FONT color="green">064</FONT> private IntStack m_currentExpressionNodes;<a name="line.64"></a> |
| <FONT color="green">065</FONT> <a name="line.65"></a> |
| <FONT color="green">066</FONT> /**<a name="line.66"></a> |
| <FONT color="green">067</FONT> * The current context node lists stack.<a name="line.67"></a> |
| <FONT color="green">068</FONT> */<a name="line.68"></a> |
| <FONT color="green">069</FONT> private Stack m_contextNodeLists;<a name="line.69"></a> |
| <FONT color="green">070</FONT> <a name="line.70"></a> |
| <FONT color="green">071</FONT> /**<a name="line.71"></a> |
| <FONT color="green">072</FONT> * The current context node list.<a name="line.72"></a> |
| <FONT color="green">073</FONT> */<a name="line.73"></a> |
| <FONT color="green">074</FONT> private DTMIterator m_contextNodeList;<a name="line.74"></a> |
| <FONT color="green">075</FONT> <a name="line.75"></a> |
| <FONT color="green">076</FONT> /**<a name="line.76"></a> |
| <FONT color="green">077</FONT> * Stack of AxesIterators.<a name="line.77"></a> |
| <FONT color="green">078</FONT> */<a name="line.78"></a> |
| <FONT color="green">079</FONT> private Stack m_axesIteratorStack;<a name="line.79"></a> |
| <FONT color="green">080</FONT> <a name="line.80"></a> |
| <FONT color="green">081</FONT> /**<a name="line.81"></a> |
| <FONT color="green">082</FONT> * Is > 0 when we're processing a for-each.<a name="line.82"></a> |
| <FONT color="green">083</FONT> */<a name="line.83"></a> |
| <FONT color="green">084</FONT> private BoolStack m_currentTemplateRuleIsNull;<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 node vector used as a stack to track the current<a name="line.87"></a> |
| <FONT color="green">088</FONT> * ElemTemplateElement. Needed for the<a name="line.88"></a> |
| <FONT color="green">089</FONT> * org.apache.xalan.transformer.TransformState interface,<a name="line.89"></a> |
| <FONT color="green">090</FONT> * so a tool can discover the calling template. <a name="line.90"></a> |
| <FONT color="green">091</FONT> */<a name="line.91"></a> |
| <FONT color="green">092</FONT> private ObjectStack m_currentTemplateElements;<a name="line.92"></a> |
| <FONT color="green">093</FONT> <a name="line.93"></a> |
| <FONT color="green">094</FONT> /**<a name="line.94"></a> |
| <FONT color="green">095</FONT> * A node vector used as a stack to track the current<a name="line.95"></a> |
| <FONT color="green">096</FONT> * ElemTemplate that was matched, as well as the node that<a name="line.96"></a> |
| <FONT color="green">097</FONT> * was matched. Needed for the<a name="line.97"></a> |
| <FONT color="green">098</FONT> * org.apache.xalan.transformer.TransformState interface,<a name="line.98"></a> |
| <FONT color="green">099</FONT> * so a tool can discover the matched template, and matched<a name="line.99"></a> |
| <FONT color="green">100</FONT> * node. <a name="line.100"></a> |
| <FONT color="green">101</FONT> */<a name="line.101"></a> |
| <FONT color="green">102</FONT> private Stack m_currentMatchTemplates;<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 node vector used as a stack to track the current<a name="line.105"></a> |
| <FONT color="green">106</FONT> * ElemTemplate that was matched, as well as the node that<a name="line.106"></a> |
| <FONT color="green">107</FONT> * was matched. Needed for the<a name="line.107"></a> |
| <FONT color="green">108</FONT> * org.apache.xalan.transformer.TransformState interface,<a name="line.108"></a> |
| <FONT color="green">109</FONT> * so a tool can discover the matched template, and matched<a name="line.109"></a> |
| <FONT color="green">110</FONT> * node. <a name="line.110"></a> |
| <FONT color="green">111</FONT> */<a name="line.111"></a> |
| <FONT color="green">112</FONT> private NodeVector m_currentMatchNodes;<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> * The table of counters for xsl:number support.<a name="line.115"></a> |
| <FONT color="green">116</FONT> * @see ElemNumber<a name="line.116"></a> |
| <FONT color="green">117</FONT> */<a name="line.117"></a> |
| <FONT color="green">118</FONT> private CountersTable m_countersTable;<a name="line.118"></a> |
| <FONT color="green">119</FONT> <a name="line.119"></a> |
| <FONT color="green">120</FONT> /**<a name="line.120"></a> |
| <FONT color="green">121</FONT> * Stack for the purposes of flagging infinite recursion with<a name="line.121"></a> |
| <FONT color="green">122</FONT> * attribute sets.<a name="line.122"></a> |
| <FONT color="green">123</FONT> */<a name="line.123"></a> |
| <FONT color="green">124</FONT> private Stack m_attrSetStack;<a name="line.124"></a> |
| <FONT color="green">125</FONT> <a name="line.125"></a> |
| <FONT color="green">126</FONT> /** Indicate whether a namespace context was pushed */<a name="line.126"></a> |
| <FONT color="green">127</FONT> boolean m_nsContextPushed;<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> * Use the SAX2 helper class to track result namespaces.<a name="line.130"></a> |
| <FONT color="green">131</FONT> */<a name="line.131"></a> |
| <FONT color="green">132</FONT> private NamespaceMappings m_nsSupport;<a name="line.132"></a> |
| <FONT color="green">133</FONT> <a name="line.133"></a> |
| <FONT color="green">134</FONT> /** The number of events queued */<a name="line.134"></a> |
| <FONT color="green">135</FONT> // int m_eventCount;<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> * Constructor TransformSnapshotImpl<a name="line.138"></a> |
| <FONT color="green">139</FONT> * Take a snapshot of the currently executing context.<a name="line.139"></a> |
| <FONT color="green">140</FONT> *<a name="line.140"></a> |
| <FONT color="green">141</FONT> * @param transformer Non null transformer instance<a name="line.141"></a> |
| <FONT color="green">142</FONT> * @deprecated It doesn't look like this code, which is for tooling, has<a name="line.142"></a> |
| <FONT color="green">143</FONT> * functioned propery for a while, so it doesn't look like it is being used.<a name="line.143"></a> |
| <FONT color="green">144</FONT> */<a name="line.144"></a> |
| <FONT color="green">145</FONT> TransformSnapshotImpl(TransformerImpl transformer)<a name="line.145"></a> |
| <FONT color="green">146</FONT> {<a name="line.146"></a> |
| <FONT color="green">147</FONT> <a name="line.147"></a> |
| <FONT color="green">148</FONT> try<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> // Are all these clones deep enough?<a name="line.151"></a> |
| <FONT color="green">152</FONT> SerializationHandler rtf = transformer.getResultTreeHandler();<a name="line.152"></a> |
| <FONT color="green">153</FONT> <a name="line.153"></a> |
| <FONT color="green">154</FONT> {<a name="line.154"></a> |
| <FONT color="green">155</FONT> // save serializer fields<a name="line.155"></a> |
| <FONT color="green">156</FONT> m_nsSupport = (NamespaceMappings)rtf.getNamespaceMappings().clone();<a name="line.156"></a> |
| <FONT color="green">157</FONT> <a name="line.157"></a> |
| <FONT color="green">158</FONT> // Do other fields need to be saved/restored?<a name="line.158"></a> |
| <FONT color="green">159</FONT> }<a name="line.159"></a> |
| <FONT color="green">160</FONT> <a name="line.160"></a> |
| <FONT color="green">161</FONT> XPathContext xpc = transformer.getXPathContext();<a name="line.161"></a> |
| <FONT color="green">162</FONT> <a name="line.162"></a> |
| <FONT color="green">163</FONT> m_variableStacks = (VariableStack) xpc.getVarStack().clone();<a name="line.163"></a> |
| <FONT color="green">164</FONT> m_currentNodes = (IntStack) xpc.getCurrentNodeStack().clone();<a name="line.164"></a> |
| <FONT color="green">165</FONT> m_currentExpressionNodes =<a name="line.165"></a> |
| <FONT color="green">166</FONT> (IntStack) xpc.getCurrentExpressionNodeStack().clone();<a name="line.166"></a> |
| <FONT color="green">167</FONT> m_contextNodeLists = (Stack) xpc.getContextNodeListsStack().clone();<a name="line.167"></a> |
| <FONT color="green">168</FONT> <a name="line.168"></a> |
| <FONT color="green">169</FONT> if (!m_contextNodeLists.empty())<a name="line.169"></a> |
| <FONT color="green">170</FONT> m_contextNodeList =<a name="line.170"></a> |
| <FONT color="green">171</FONT> (DTMIterator) xpc.getContextNodeList().clone();<a name="line.171"></a> |
| <FONT color="green">172</FONT> <a name="line.172"></a> |
| <FONT color="green">173</FONT> m_axesIteratorStack = (Stack) xpc.getAxesIteratorStackStacks().clone();<a name="line.173"></a> |
| <FONT color="green">174</FONT> m_currentTemplateRuleIsNull =<a name="line.174"></a> |
| <FONT color="green">175</FONT> (BoolStack) transformer.m_currentTemplateRuleIsNull.clone();<a name="line.175"></a> |
| <FONT color="green">176</FONT> m_currentTemplateElements =<a name="line.176"></a> |
| <FONT color="green">177</FONT> (ObjectStack) transformer.m_currentTemplateElements.clone();<a name="line.177"></a> |
| <FONT color="green">178</FONT> m_currentMatchTemplates =<a name="line.178"></a> |
| <FONT color="green">179</FONT> (Stack) transformer.m_currentMatchTemplates.clone();<a name="line.179"></a> |
| <FONT color="green">180</FONT> m_currentMatchNodes =<a name="line.180"></a> |
| <FONT color="green">181</FONT> (NodeVector) transformer.m_currentMatchedNodes.clone();<a name="line.181"></a> |
| <FONT color="green">182</FONT> m_countersTable =<a name="line.182"></a> |
| <FONT color="green">183</FONT> (CountersTable) transformer.getCountersTable().clone();<a name="line.183"></a> |
| <FONT color="green">184</FONT> <a name="line.184"></a> |
| <FONT color="green">185</FONT> if (transformer.m_attrSetStack != null)<a name="line.185"></a> |
| <FONT color="green">186</FONT> m_attrSetStack = (Stack) transformer.m_attrSetStack.clone();<a name="line.186"></a> |
| <FONT color="green">187</FONT> }<a name="line.187"></a> |
| <FONT color="green">188</FONT> catch (CloneNotSupportedException cnse)<a name="line.188"></a> |
| <FONT color="green">189</FONT> {<a name="line.189"></a> |
| <FONT color="green">190</FONT> throw new org.apache.xml.utils.WrappedRuntimeException(cnse);<a name="line.190"></a> |
| <FONT color="green">191</FONT> }<a name="line.191"></a> |
| <FONT color="green">192</FONT> }<a name="line.192"></a> |
| <FONT color="green">193</FONT> <a name="line.193"></a> |
| <FONT color="green">194</FONT> /**<a name="line.194"></a> |
| <FONT color="green">195</FONT> * This will reset the stylesheet to a given execution context<a name="line.195"></a> |
| <FONT color="green">196</FONT> * based on some previously taken snapshot where we can then start execution <a name="line.196"></a> |
| <FONT color="green">197</FONT> *<a name="line.197"></a> |
| <FONT color="green">198</FONT> * @param transformer Non null transformer instance<a name="line.198"></a> |
| <FONT color="green">199</FONT> * <a name="line.199"></a> |
| <FONT color="green">200</FONT> * @deprecated It doesn't look like this code, which is for tooling, has<a name="line.200"></a> |
| <FONT color="green">201</FONT> * functioned propery for a while, so it doesn't look like it is being used.<a name="line.201"></a> |
| <FONT color="green">202</FONT> */<a name="line.202"></a> |
| <FONT color="green">203</FONT> void apply(TransformerImpl transformer)<a name="line.203"></a> |
| <FONT color="green">204</FONT> {<a name="line.204"></a> |
| <FONT color="green">205</FONT> <a name="line.205"></a> |
| <FONT color="green">206</FONT> try<a name="line.206"></a> |
| <FONT color="green">207</FONT> {<a name="line.207"></a> |
| <FONT color="green">208</FONT> <a name="line.208"></a> |
| <FONT color="green">209</FONT> // Are all these clones deep enough?<a name="line.209"></a> |
| <FONT color="green">210</FONT> SerializationHandler rtf = transformer.getResultTreeHandler();<a name="line.210"></a> |
| <FONT color="green">211</FONT> <a name="line.211"></a> |
| <FONT color="green">212</FONT> if (rtf != null)<a name="line.212"></a> |
| <FONT color="green">213</FONT> {<a name="line.213"></a> |
| <FONT color="green">214</FONT> // restore serializer fields<a name="line.214"></a> |
| <FONT color="green">215</FONT> rtf.setNamespaceMappings((NamespaceMappings)m_nsSupport.clone());<a name="line.215"></a> |
| <FONT color="green">216</FONT> }<a name="line.216"></a> |
| <FONT color="green">217</FONT> <a name="line.217"></a> |
| <FONT color="green">218</FONT> XPathContext xpc = transformer.getXPathContext();<a name="line.218"></a> |
| <FONT color="green">219</FONT> <a name="line.219"></a> |
| <FONT color="green">220</FONT> xpc.setVarStack((VariableStack) m_variableStacks.clone());<a name="line.220"></a> |
| <FONT color="green">221</FONT> xpc.setCurrentNodeStack((IntStack) m_currentNodes.clone());<a name="line.221"></a> |
| <FONT color="green">222</FONT> xpc.setCurrentExpressionNodeStack(<a name="line.222"></a> |
| <FONT color="green">223</FONT> (IntStack) m_currentExpressionNodes.clone());<a name="line.223"></a> |
| <FONT color="green">224</FONT> xpc.setContextNodeListsStack((Stack) m_contextNodeLists.clone());<a name="line.224"></a> |
| <FONT color="green">225</FONT> <a name="line.225"></a> |
| <FONT color="green">226</FONT> if (m_contextNodeList != null)<a name="line.226"></a> |
| <FONT color="green">227</FONT> xpc.pushContextNodeList((DTMIterator) m_contextNodeList.clone());<a name="line.227"></a> |
| <FONT color="green">228</FONT> <a name="line.228"></a> |
| <FONT color="green">229</FONT> xpc.setAxesIteratorStackStacks((Stack) m_axesIteratorStack.clone());<a name="line.229"></a> |
| <FONT color="green">230</FONT> <a name="line.230"></a> |
| <FONT color="green">231</FONT> transformer.m_currentTemplateRuleIsNull =<a name="line.231"></a> |
| <FONT color="green">232</FONT> (BoolStack) m_currentTemplateRuleIsNull.clone();<a name="line.232"></a> |
| <FONT color="green">233</FONT> transformer.m_currentTemplateElements =<a name="line.233"></a> |
| <FONT color="green">234</FONT> (ObjectStack) m_currentTemplateElements.clone();<a name="line.234"></a> |
| <FONT color="green">235</FONT> transformer.m_currentMatchTemplates =<a name="line.235"></a> |
| <FONT color="green">236</FONT> (Stack) m_currentMatchTemplates.clone();<a name="line.236"></a> |
| <FONT color="green">237</FONT> transformer.m_currentMatchedNodes =<a name="line.237"></a> |
| <FONT color="green">238</FONT> (NodeVector) m_currentMatchNodes.clone();<a name="line.238"></a> |
| <FONT color="green">239</FONT> transformer.m_countersTable = (CountersTable) m_countersTable.clone();<a name="line.239"></a> |
| <FONT color="green">240</FONT> <a name="line.240"></a> |
| <FONT color="green">241</FONT> if (m_attrSetStack != null)<a name="line.241"></a> |
| <FONT color="green">242</FONT> transformer.m_attrSetStack = (Stack) m_attrSetStack.clone();<a name="line.242"></a> |
| <FONT color="green">243</FONT> }<a name="line.243"></a> |
| <FONT color="green">244</FONT> catch (CloneNotSupportedException cnse)<a name="line.244"></a> |
| <FONT color="green">245</FONT> {<a name="line.245"></a> |
| <FONT color="green">246</FONT> throw new org.apache.xml.utils.WrappedRuntimeException(cnse);<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> }<a name="line.249"></a> |
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