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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: TestSeq.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.Dictionary;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.util.Vector;<a name="line.25"></a> |
| <FONT color="green">026</FONT> <a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.apache.bcel.generic.GOTO_W;<a name="line.27"></a> |
| <FONT color="green">028</FONT> import org.apache.bcel.generic.InstructionHandle;<a name="line.28"></a> |
| <FONT color="green">029</FONT> import org.apache.bcel.generic.InstructionList;<a name="line.29"></a> |
| <FONT color="green">030</FONT> import org.apache.xalan.xsltc.compiler.util.ClassGenerator;<a name="line.30"></a> |
| <FONT color="green">031</FONT> import org.apache.xalan.xsltc.compiler.util.MethodGenerator;<a name="line.31"></a> |
| <FONT color="green">032</FONT> <a name="line.32"></a> |
| <FONT color="green">033</FONT> /**<a name="line.33"></a> |
| <FONT color="green">034</FONT> * A test sequence is a sequence of patterns that<a name="line.34"></a> |
| <FONT color="green">035</FONT> *<a name="line.35"></a> |
| <FONT color="green">036</FONT> * (1) occured in templates in the same mode<a name="line.36"></a> |
| <FONT color="green">037</FONT> * (2) share the same kernel node type (e.g. A/B and C/C/B)<a name="line.37"></a> |
| <FONT color="green">038</FONT> * (3) may also contain patterns matching "*" and "node()"<a name="line.38"></a> |
| <FONT color="green">039</FONT> * (element sequence only) or matching "@*" (attribute<a name="line.39"></a> |
| <FONT color="green">040</FONT> * sequence only).<a name="line.40"></a> |
| <FONT color="green">041</FONT> *<a name="line.41"></a> |
| <FONT color="green">042</FONT> * A test sequence may have a default template, which will be <a name="line.42"></a> |
| <FONT color="green">043</FONT> * instantiated if none of the other patterns match. <a name="line.43"></a> |
| <FONT color="green">044</FONT> * @author Jacek Ambroziak<a name="line.44"></a> |
| <FONT color="green">045</FONT> * @author Santiago Pericas-Geertsen<a name="line.45"></a> |
| <FONT color="green">046</FONT> * @author Erwin Bolwidt <ejb@klomp.org><a name="line.46"></a> |
| <FONT color="green">047</FONT> * @author Morten Jorgensen <morten.jorgensen@sun.com><a name="line.47"></a> |
| <FONT color="green">048</FONT> */<a name="line.48"></a> |
| <FONT color="green">049</FONT> final class TestSeq {<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> * Integer code for the kernel type of this test sequence<a name="line.52"></a> |
| <FONT color="green">053</FONT> */<a name="line.53"></a> |
| <FONT color="green">054</FONT> private int _kernelType;<a name="line.54"></a> |
| <FONT color="green">055</FONT> <a name="line.55"></a> |
| <FONT color="green">056</FONT> /**<a name="line.56"></a> |
| <FONT color="green">057</FONT> * Vector of all patterns in the test sequence. May include<a name="line.57"></a> |
| <FONT color="green">058</FONT> * patterns with "*", "@*" or "node()" kernel.<a name="line.58"></a> |
| <FONT color="green">059</FONT> */<a name="line.59"></a> |
| <FONT color="green">060</FONT> private Vector _patterns = null;<a name="line.60"></a> |
| <FONT color="green">061</FONT> <a name="line.61"></a> |
| <FONT color="green">062</FONT> /**<a name="line.62"></a> |
| <FONT color="green">063</FONT> * A reference to the Mode object.<a name="line.63"></a> |
| <FONT color="green">064</FONT> */<a name="line.64"></a> |
| <FONT color="green">065</FONT> private Mode _mode = null;<a name="line.65"></a> |
| <FONT color="green">066</FONT> <a name="line.66"></a> |
| <FONT color="green">067</FONT> /**<a name="line.67"></a> |
| <FONT color="green">068</FONT> * Default template for this test sequence<a name="line.68"></a> |
| <FONT color="green">069</FONT> */<a name="line.69"></a> |
| <FONT color="green">070</FONT> private Template _default = null;<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> * Instruction list representing this test sequence.<a name="line.73"></a> |
| <FONT color="green">074</FONT> */<a name="line.74"></a> |
| <FONT color="green">075</FONT> private InstructionList _instructionList;<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> * Cached handle to avoid compiling more than once.<a name="line.78"></a> |
| <FONT color="green">079</FONT> */<a name="line.79"></a> |
| <FONT color="green">080</FONT> private InstructionHandle _start = null;<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> * Creates a new test sequence given a set of patterns and a mode.<a name="line.83"></a> |
| <FONT color="green">084</FONT> */<a name="line.84"></a> |
| <FONT color="green">085</FONT> public TestSeq(Vector patterns, Mode mode) {<a name="line.85"></a> |
| <FONT color="green">086</FONT> this(patterns, -2, mode);<a name="line.86"></a> |
| <FONT color="green">087</FONT> }<a name="line.87"></a> |
| <FONT color="green">088</FONT> <a name="line.88"></a> |
| <FONT color="green">089</FONT> public TestSeq(Vector patterns, int kernelType, Mode mode) {<a name="line.89"></a> |
| <FONT color="green">090</FONT> _patterns = patterns;<a name="line.90"></a> |
| <FONT color="green">091</FONT> _kernelType = kernelType;<a name="line.91"></a> |
| <FONT color="green">092</FONT> _mode = mode;<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 name="line.95"></a> |
| <FONT color="green">096</FONT> * Returns a string representation of this test sequence. Notice<a name="line.96"></a> |
| <FONT color="green">097</FONT> * that test sequences are mutable, so the value returned by this<a name="line.97"></a> |
| <FONT color="green">098</FONT> * method is different before and after calling reduce().<a name="line.98"></a> |
| <FONT color="green">099</FONT> */<a name="line.99"></a> |
| <FONT color="green">100</FONT> public String toString() {<a name="line.100"></a> |
| <FONT color="green">101</FONT> final int count = _patterns.size();<a name="line.101"></a> |
| <FONT color="green">102</FONT> final StringBuffer result = new StringBuffer();<a name="line.102"></a> |
| <FONT color="green">103</FONT> <a name="line.103"></a> |
| <FONT color="green">104</FONT> for (int i = 0; i < count; i++) {<a name="line.104"></a> |
| <FONT color="green">105</FONT> final LocationPathPattern pattern =<a name="line.105"></a> |
| <FONT color="green">106</FONT> (LocationPathPattern) _patterns.elementAt(i);<a name="line.106"></a> |
| <FONT color="green">107</FONT> <a name="line.107"></a> |
| <FONT color="green">108</FONT> if (i == 0) {<a name="line.108"></a> |
| <FONT color="green">109</FONT> result.append("Testseq for kernel " + _kernelType)<a name="line.109"></a> |
| <FONT color="green">110</FONT> .append('\n');<a name="line.110"></a> |
| <FONT color="green">111</FONT> }<a name="line.111"></a> |
| <FONT color="green">112</FONT> result.append(" pattern " + i + ": ")<a name="line.112"></a> |
| <FONT color="green">113</FONT> .append(pattern.toString())<a name="line.113"></a> |
| <FONT color="green">114</FONT> .append('\n');<a name="line.114"></a> |
| <FONT color="green">115</FONT> }<a name="line.115"></a> |
| <FONT color="green">116</FONT> return result.toString();<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 instruction list for this test sequence<a name="line.120"></a> |
| <FONT color="green">121</FONT> */<a name="line.121"></a> |
| <FONT color="green">122</FONT> public InstructionList getInstructionList() {<a name="line.122"></a> |
| <FONT color="green">123</FONT> return _instructionList;<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> * Return the highest priority for a pattern in this test<a name="line.127"></a> |
| <FONT color="green">128</FONT> * sequence. This is either the priority of the first or<a name="line.128"></a> |
| <FONT color="green">129</FONT> * of the default pattern.<a name="line.129"></a> |
| <FONT color="green">130</FONT> */<a name="line.130"></a> |
| <FONT color="green">131</FONT> public double getPriority() {<a name="line.131"></a> |
| <FONT color="green">132</FONT> final Template template = (_patterns.size() == 0) ? _default <a name="line.132"></a> |
| <FONT color="green">133</FONT> : ((Pattern) _patterns.elementAt(0)).getTemplate();<a name="line.133"></a> |
| <FONT color="green">134</FONT> return template.getPriority();<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> * Returns the position of the highest priority pattern in <a name="line.138"></a> |
| <FONT color="green">139</FONT> * this test sequence.<a name="line.139"></a> |
| <FONT color="green">140</FONT> */<a name="line.140"></a> |
| <FONT color="green">141</FONT> public int getPosition() {<a name="line.141"></a> |
| <FONT color="green">142</FONT> final Template template = (_patterns.size() == 0) ? _default <a name="line.142"></a> |
| <FONT color="green">143</FONT> : ((Pattern) _patterns.elementAt(0)).getTemplate();<a name="line.143"></a> |
| <FONT color="green">144</FONT> return template.getPosition();<a name="line.144"></a> |
| <FONT color="green">145</FONT> }<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> * Reduce the patterns in this test sequence. Creates a new<a name="line.148"></a> |
| <FONT color="green">149</FONT> * vector of patterns and sets the default pattern if it<a name="line.149"></a> |
| <FONT color="green">150</FONT> * finds a patterns that is fully reduced.<a name="line.150"></a> |
| <FONT color="green">151</FONT> */<a name="line.151"></a> |
| <FONT color="green">152</FONT> public void reduce() {<a name="line.152"></a> |
| <FONT color="green">153</FONT> final Vector newPatterns = new Vector();<a name="line.153"></a> |
| <FONT color="green">154</FONT> <a name="line.154"></a> |
| <FONT color="green">155</FONT> final int count = _patterns.size();<a name="line.155"></a> |
| <FONT color="green">156</FONT> for (int i = 0; i < count; i++) {<a name="line.156"></a> |
| <FONT color="green">157</FONT> final LocationPathPattern pattern =<a name="line.157"></a> |
| <FONT color="green">158</FONT> (LocationPathPattern)_patterns.elementAt(i);<a name="line.158"></a> |
| <FONT color="green">159</FONT> <a name="line.159"></a> |
| <FONT color="green">160</FONT> // Reduce this pattern<a name="line.160"></a> |
| <FONT color="green">161</FONT> pattern.reduceKernelPattern();<a name="line.161"></a> |
| <FONT color="green">162</FONT> <a name="line.162"></a> |
| <FONT color="green">163</FONT> // Is this pattern fully reduced?<a name="line.163"></a> |
| <FONT color="green">164</FONT> if (pattern.isWildcard()) {<a name="line.164"></a> |
| <FONT color="green">165</FONT> _default = pattern.getTemplate();<a name="line.165"></a> |
| <FONT color="green">166</FONT> break; // Ignore following patterns <a name="line.166"></a> |
| <FONT color="green">167</FONT> }<a name="line.167"></a> |
| <FONT color="green">168</FONT> else {<a name="line.168"></a> |
| <FONT color="green">169</FONT> newPatterns.addElement(pattern);<a name="line.169"></a> |
| <FONT color="green">170</FONT> }<a name="line.170"></a> |
| <FONT color="green">171</FONT> }<a name="line.171"></a> |
| <FONT color="green">172</FONT> _patterns = newPatterns;<a name="line.172"></a> |
| <FONT color="green">173</FONT> }<a name="line.173"></a> |
| <FONT color="green">174</FONT> <a name="line.174"></a> |
| <FONT color="green">175</FONT> /**<a name="line.175"></a> |
| <FONT color="green">176</FONT> * Returns, by reference, the templates that are included in <a name="line.176"></a> |
| <FONT color="green">177</FONT> * this test sequence. Note that a single template can occur <a name="line.177"></a> |
| <FONT color="green">178</FONT> * in several test sequences if its pattern is a union.<a name="line.178"></a> |
| <FONT color="green">179</FONT> */<a name="line.179"></a> |
| <FONT color="green">180</FONT> public void findTemplates(Dictionary templates) {<a name="line.180"></a> |
| <FONT color="green">181</FONT> if (_default != null) {<a name="line.181"></a> |
| <FONT color="green">182</FONT> templates.put(_default, this);<a name="line.182"></a> |
| <FONT color="green">183</FONT> }<a name="line.183"></a> |
| <FONT color="green">184</FONT> for (int i = 0; i < _patterns.size(); i++) {<a name="line.184"></a> |
| <FONT color="green">185</FONT> final LocationPathPattern pattern =<a name="line.185"></a> |
| <FONT color="green">186</FONT> (LocationPathPattern)_patterns.elementAt(i);<a name="line.186"></a> |
| <FONT color="green">187</FONT> templates.put(pattern.getTemplate(), this);<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> /**<a name="line.191"></a> |
| <FONT color="green">192</FONT> * Get the instruction handle to a template's code. This is <a name="line.192"></a> |
| <FONT color="green">193</FONT> * used when a single template occurs in several test <a name="line.193"></a> |
| <FONT color="green">194</FONT> * sequences; that is, if its pattern is a union of patterns <a name="line.194"></a> |
| <FONT color="green">195</FONT> * (e.g. match="A/B | A/C").<a name="line.195"></a> |
| <FONT color="green">196</FONT> */<a name="line.196"></a> |
| <FONT color="green">197</FONT> private InstructionHandle getTemplateHandle(Template template) {<a name="line.197"></a> |
| <FONT color="green">198</FONT> return (InstructionHandle)_mode.getTemplateInstructionHandle(template);<a name="line.198"></a> |
| <FONT color="green">199</FONT> }<a name="line.199"></a> |
| <FONT color="green">200</FONT> <a name="line.200"></a> |
| <FONT color="green">201</FONT> /**<a name="line.201"></a> |
| <FONT color="green">202</FONT> * Returns pattern n in this test sequence<a name="line.202"></a> |
| <FONT color="green">203</FONT> */<a name="line.203"></a> |
| <FONT color="green">204</FONT> private LocationPathPattern getPattern(int n) {<a name="line.204"></a> |
| <FONT color="green">205</FONT> return (LocationPathPattern)_patterns.elementAt(n);<a name="line.205"></a> |
| <FONT color="green">206</FONT> }<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> * Compile the code for this test sequence. Compile patterns <a name="line.209"></a> |
| <FONT color="green">210</FONT> * from highest to lowest priority. Note that since patterns <a name="line.210"></a> |
| <FONT color="green">211</FONT> * can be share by multiple test sequences, instruction lists <a name="line.211"></a> |
| <FONT color="green">212</FONT> * must be copied before backpatching.<a name="line.212"></a> |
| <FONT color="green">213</FONT> */<a name="line.213"></a> |
| <FONT color="green">214</FONT> public InstructionHandle compile(ClassGenerator classGen,<a name="line.214"></a> |
| <FONT color="green">215</FONT> MethodGenerator methodGen,<a name="line.215"></a> |
| <FONT color="green">216</FONT> InstructionHandle continuation) <a name="line.216"></a> |
| <FONT color="green">217</FONT> {<a name="line.217"></a> |
| <FONT color="green">218</FONT> // Returned cached value if already compiled<a name="line.218"></a> |
| <FONT color="green">219</FONT> if (_start != null) {<a name="line.219"></a> |
| <FONT color="green">220</FONT> return _start;<a name="line.220"></a> |
| <FONT color="green">221</FONT> }<a name="line.221"></a> |
| <FONT color="green">222</FONT> <a name="line.222"></a> |
| <FONT color="green">223</FONT> // If not patterns, then return handle for default template<a name="line.223"></a> |
| <FONT color="green">224</FONT> final int count = _patterns.size();<a name="line.224"></a> |
| <FONT color="green">225</FONT> if (count == 0) {<a name="line.225"></a> |
| <FONT color="green">226</FONT> return (_start = getTemplateHandle(_default));<a name="line.226"></a> |
| <FONT color="green">227</FONT> }<a name="line.227"></a> |
| <FONT color="green">228</FONT> <a name="line.228"></a> |
| <FONT color="green">229</FONT> // Init handle to jump when all patterns failed<a name="line.229"></a> |
| <FONT color="green">230</FONT> InstructionHandle fail = (_default == null) ? continuation<a name="line.230"></a> |
| <FONT color="green">231</FONT> : getTemplateHandle(_default);<a name="line.231"></a> |
| <FONT color="green">232</FONT> <a name="line.232"></a> |
| <FONT color="green">233</FONT> // Compile all patterns in reverse order<a name="line.233"></a> |
| <FONT color="green">234</FONT> for (int n = count - 1; n >= 0; n--) {<a name="line.234"></a> |
| <FONT color="green">235</FONT> final LocationPathPattern pattern = getPattern(n);<a name="line.235"></a> |
| <FONT color="green">236</FONT> final Template template = pattern.getTemplate();<a name="line.236"></a> |
| <FONT color="green">237</FONT> final InstructionList il = new InstructionList();<a name="line.237"></a> |
| <FONT color="green">238</FONT> <a name="line.238"></a> |
| <FONT color="green">239</FONT> // Patterns expect current node on top of stack<a name="line.239"></a> |
| <FONT color="green">240</FONT> il.append(methodGen.loadCurrentNode());<a name="line.240"></a> |
| <FONT color="green">241</FONT> <a name="line.241"></a> |
| <FONT color="green">242</FONT> // Apply the test-code compiled for the pattern<a name="line.242"></a> |
| <FONT color="green">243</FONT> InstructionList ilist = methodGen.getInstructionList(pattern);<a name="line.243"></a> |
| <FONT color="green">244</FONT> if (ilist == null) {<a name="line.244"></a> |
| <FONT color="green">245</FONT> ilist = pattern.compile(classGen, methodGen);<a name="line.245"></a> |
| <FONT color="green">246</FONT> methodGen.addInstructionList(pattern, ilist);<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> // Make a copy of the instruction list for backpatching<a name="line.249"></a> |
| <FONT color="green">250</FONT> InstructionList copyOfilist = ilist.copy();<a name="line.250"></a> |
| <FONT color="green">251</FONT> <a name="line.251"></a> |
| <FONT color="green">252</FONT> FlowList trueList = pattern.getTrueList();<a name="line.252"></a> |
| <FONT color="green">253</FONT> if (trueList != null) {<a name="line.253"></a> |
| <FONT color="green">254</FONT> trueList = trueList.copyAndRedirect(ilist, copyOfilist);<a name="line.254"></a> |
| <FONT color="green">255</FONT> }<a name="line.255"></a> |
| <FONT color="green">256</FONT> FlowList falseList = pattern.getFalseList();<a name="line.256"></a> |
| <FONT color="green">257</FONT> if (falseList != null) {<a name="line.257"></a> |
| <FONT color="green">258</FONT> falseList = falseList.copyAndRedirect(ilist, copyOfilist);<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> il.append(copyOfilist);<a name="line.261"></a> |
| <FONT color="green">262</FONT> <a name="line.262"></a> |
| <FONT color="green">263</FONT> // On success branch to the template code<a name="line.263"></a> |
| <FONT color="green">264</FONT> final InstructionHandle gtmpl = getTemplateHandle(template);<a name="line.264"></a> |
| <FONT color="green">265</FONT> final InstructionHandle success = il.append(new GOTO_W(gtmpl));<a name="line.265"></a> |
| <FONT color="green">266</FONT> <a name="line.266"></a> |
| <FONT color="green">267</FONT> if (trueList != null) {<a name="line.267"></a> |
| <FONT color="green">268</FONT> trueList.backPatch(success);<a name="line.268"></a> |
| <FONT color="green">269</FONT> }<a name="line.269"></a> |
| <FONT color="green">270</FONT> if (falseList != null) {<a name="line.270"></a> |
| <FONT color="green">271</FONT> falseList.backPatch(fail);<a name="line.271"></a> |
| <FONT color="green">272</FONT> } <a name="line.272"></a> |
| <FONT color="green">273</FONT> <a name="line.273"></a> |
| <FONT color="green">274</FONT> // Next pattern's 'fail' target is this pattern's first instruction<a name="line.274"></a> |
| <FONT color="green">275</FONT> fail = il.getStart();<a name="line.275"></a> |
| <FONT color="green">276</FONT> <a name="line.276"></a> |
| <FONT color="green">277</FONT> // Append existing instruction list to the end of this one<a name="line.277"></a> |
| <FONT color="green">278</FONT> if (_instructionList != null) {<a name="line.278"></a> |
| <FONT color="green">279</FONT> il.append(_instructionList);<a name="line.279"></a> |
| <FONT color="green">280</FONT> }<a name="line.280"></a> |
| <FONT color="green">281</FONT> <a name="line.281"></a> |
| <FONT color="green">282</FONT> // Set current instruction list to be this one<a name="line.282"></a> |
| <FONT color="green">283</FONT> _instructionList = il;<a name="line.283"></a> |
| <FONT color="green">284</FONT> }<a name="line.284"></a> |
| <FONT color="green">285</FONT> return (_start = fail);<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> |
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| </PRE> |
| </BODY> |
| </HTML> |
