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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Cobertura - http://cobertura.sourceforge.net/<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Copyright (C) 2005 Mark Doliner<a name="line.4"></a>
<span class="sourceLineNo">005</span> * Copyright (C) 2006 Jiri Mares<a name="line.5"></a>
<span class="sourceLineNo">006</span> *<a name="line.6"></a>
<span class="sourceLineNo">007</span> * Cobertura is free software; you can redistribute it and/or modify<a name="line.7"></a>
<span class="sourceLineNo">008</span> * it under the terms of the GNU General Public License as published<a name="line.8"></a>
<span class="sourceLineNo">009</span> * by the Free Software Foundation; either version 2 of the License,<a name="line.9"></a>
<span class="sourceLineNo">010</span> * or (at your option) any later version.<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Cobertura is distributed in the hope that it will be useful, but<a name="line.12"></a>
<span class="sourceLineNo">013</span> * WITHOUT ANY WARRANTY; without even the implied warranty of<a name="line.13"></a>
<span class="sourceLineNo">014</span> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU<a name="line.14"></a>
<span class="sourceLineNo">015</span> * General Public License for more details.<a name="line.15"></a>
<span class="sourceLineNo">016</span> *<a name="line.16"></a>
<span class="sourceLineNo">017</span> * You should have received a copy of the GNU General Public License<a name="line.17"></a>
<span class="sourceLineNo">018</span> * along with Cobertura; if not, write to the Free Software<a name="line.18"></a>
<span class="sourceLineNo">019</span> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307<a name="line.19"></a>
<span class="sourceLineNo">020</span> * USA<a name="line.20"></a>
<span class="sourceLineNo">021</span> */<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>package net.sourceforge.cobertura.instrument;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Collection;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.HashMap;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Map;<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>import net.sourceforge.cobertura.coveragedata.ClassData;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import net.sourceforge.cobertura.util.RegexUtil;<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.objectweb.asm.Label;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.objectweb.asm.MethodAdapter;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.objectweb.asm.MethodVisitor;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.objectweb.asm.Opcodes;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.objectweb.asm.tree.MethodNode;<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>public class FirstPassMethodInstrumenter extends MethodAdapter implements Opcodes<a name="line.38"></a>
<span class="sourceLineNo">039</span>{<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span> private final String ownerClass;<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span> private String myName;<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span> private String myDescriptor;<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
<span class="sourceLineNo">047</span> private int myAccess;<a name="line.47"></a>
<span class="sourceLineNo">048</span> <a name="line.48"></a>
<span class="sourceLineNo">049</span> private Collection ignoreRegexs;<a name="line.49"></a>
<span class="sourceLineNo">050</span> <a name="line.50"></a>
<span class="sourceLineNo">051</span> private Collection ignoreBranchesRegexs;<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span> private ClassData classData;<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span> private int currentLine;<a name="line.55"></a>
<span class="sourceLineNo">056</span> <a name="line.56"></a>
<span class="sourceLineNo">057</span> private int currentJump;<a name="line.57"></a>
<span class="sourceLineNo">058</span> <a name="line.58"></a>
<span class="sourceLineNo">059</span> private int currentSwitch;<a name="line.59"></a>
<span class="sourceLineNo">060</span> <a name="line.60"></a>
<span class="sourceLineNo">061</span> private Map jumpTargetLabels;<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span> private Map switchTargetLabels;<a name="line.63"></a>
<span class="sourceLineNo">064</span> <a name="line.64"></a>
<span class="sourceLineNo">065</span> private Map lineLabels;<a name="line.65"></a>
<span class="sourceLineNo">066</span> <a name="line.66"></a>
<span class="sourceLineNo">067</span> private MethodVisitor writerMethodVisitor;<a name="line.67"></a>
<span class="sourceLineNo">068</span> <a name="line.68"></a>
<span class="sourceLineNo">069</span> private MethodNode methodNode;<a name="line.69"></a>
<span class="sourceLineNo">070</span><a name="line.70"></a>
<span class="sourceLineNo">071</span> public FirstPassMethodInstrumenter(ClassData classData, final MethodVisitor mv,<a name="line.71"></a>
<span class="sourceLineNo">072</span> final String owner, final int access, final String name, final String desc, <a name="line.72"></a>
<span class="sourceLineNo">073</span> final String signature, final String[] exceptions, final Collection ignoreRegexs,<a name="line.73"></a>
<span class="sourceLineNo">074</span> final Collection ignoreBranchesRegexs)<a name="line.74"></a>
<span class="sourceLineNo">075</span> {<a name="line.75"></a>
<span class="sourceLineNo">076</span> super(new MethodNode(access, name, desc, signature, exceptions));<a name="line.76"></a>
<span class="sourceLineNo">077</span> writerMethodVisitor = mv;<a name="line.77"></a>
<span class="sourceLineNo">078</span> this.ownerClass = owner;<a name="line.78"></a>
<span class="sourceLineNo">079</span> this.methodNode = (MethodNode) this.mv;<a name="line.79"></a>
<span class="sourceLineNo">080</span> this.classData = classData;<a name="line.80"></a>
<span class="sourceLineNo">081</span> this.myAccess = access;<a name="line.81"></a>
<span class="sourceLineNo">082</span> this.myName = name;<a name="line.82"></a>
<span class="sourceLineNo">083</span> this.myDescriptor = desc;<a name="line.83"></a>
<span class="sourceLineNo">084</span> this.ignoreRegexs = ignoreRegexs;<a name="line.84"></a>
<span class="sourceLineNo">085</span> this.ignoreBranchesRegexs = ignoreBranchesRegexs;<a name="line.85"></a>
<span class="sourceLineNo">086</span> this.jumpTargetLabels = new HashMap();<a name="line.86"></a>
<span class="sourceLineNo">087</span> this.switchTargetLabels = new HashMap();<a name="line.87"></a>
<span class="sourceLineNo">088</span> this.lineLabels = new HashMap();<a name="line.88"></a>
<span class="sourceLineNo">089</span> this.currentLine = 0;<a name="line.89"></a>
<span class="sourceLineNo">090</span> }<a name="line.90"></a>
<span class="sourceLineNo">091</span><a name="line.91"></a>
<span class="sourceLineNo">092</span> public void visitEnd() {<a name="line.92"></a>
<span class="sourceLineNo">093</span> super.visitEnd();<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span> methodNode.accept(lineLabels.isEmpty() ? writerMethodVisitor : new SecondPassMethodInstrumenter(this)); //when there is no line number info -> no instrumentation<a name="line.95"></a>
<span class="sourceLineNo">096</span> }<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span> public void visitJumpInsn(int opcode, Label label)<a name="line.98"></a>
<span class="sourceLineNo">099</span> {<a name="line.99"></a>
<span class="sourceLineNo">100</span> // Ignore any jump instructions in the "class init" method.<a name="line.100"></a>
<span class="sourceLineNo">101</span> // When initializing static variables, the JVM first checks<a name="line.101"></a>
<span class="sourceLineNo">102</span> // that the variable is null before attempting to set it.<a name="line.102"></a>
<span class="sourceLineNo">103</span> // This check contains an IFNONNULL jump instruction which<a name="line.103"></a>
<span class="sourceLineNo">104</span> // would confuse people if it showed up in the reports.<a name="line.104"></a>
<span class="sourceLineNo">105</span> if ((opcode != GOTO) && (opcode != JSR) && (currentLine != 0)<a name="line.105"></a>
<span class="sourceLineNo">106</span> && (!this.myName.equals("<clinit>")))<a name="line.106"></a>
<span class="sourceLineNo">107</span> {<a name="line.107"></a>
<span class="sourceLineNo">108</span> classData.addLineJump(currentLine, currentJump);<a name="line.108"></a>
<span class="sourceLineNo">109</span> jumpTargetLabels.put(label, new JumpHolder(currentLine, currentJump++));<a name="line.109"></a>
<span class="sourceLineNo">110</span> }<a name="line.110"></a>
<span class="sourceLineNo">111</span> <a name="line.111"></a>
<span class="sourceLineNo">112</span> super.visitJumpInsn(opcode, label);<a name="line.112"></a>
<span class="sourceLineNo">113</span> }<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span> public void visitLineNumber(int line, Label start)<a name="line.115"></a>
<span class="sourceLineNo">116</span> {<a name="line.116"></a>
<span class="sourceLineNo">117</span> // Record initial information about this line of code<a name="line.117"></a>
<span class="sourceLineNo">118</span> currentLine = line;<a name="line.118"></a>
<span class="sourceLineNo">119</span> classData.addLine(currentLine, myName, myDescriptor);<a name="line.119"></a>
<span class="sourceLineNo">120</span> currentJump = 0;<a name="line.120"></a>
<span class="sourceLineNo">121</span> currentSwitch = 0;<a name="line.121"></a>
<span class="sourceLineNo">122</span> <a name="line.122"></a>
<span class="sourceLineNo">123</span> lineLabels.put(start, new Integer(line));<a name="line.123"></a>
<span class="sourceLineNo">124</span><a name="line.124"></a>
<span class="sourceLineNo">125</span> //removed because the MethodNode doesn't reproduce visitLineNumber where they are but at the end of the file :-(( <a name="line.125"></a>
<span class="sourceLineNo">126</span> //therefore we don't need them<a name="line.126"></a>
<span class="sourceLineNo">127</span> //We can directly instrument the visit line number here, but it is better to leave all instrumentation in the second pass<a name="line.127"></a>
<span class="sourceLineNo">128</span> //therefore we just collects what label is the line ...<a name="line.128"></a>
<span class="sourceLineNo">129</span> //super.visitLineNumber(line, start);<a name="line.129"></a>
<span class="sourceLineNo">130</span> }<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span> public void visitMethodInsn(int opcode, String owner, String name,<a name="line.132"></a>
<span class="sourceLineNo">133</span> String desc)<a name="line.133"></a>
<span class="sourceLineNo">134</span> {<a name="line.134"></a>
<span class="sourceLineNo">135</span> super.visitMethodInsn(opcode, owner, name, desc);<a name="line.135"></a>
<span class="sourceLineNo">136</span><a name="line.136"></a>
<span class="sourceLineNo">137</span> // If any of the ignore patterns match this line<a name="line.137"></a>
<span class="sourceLineNo">138</span> // then remove it from our data<a name="line.138"></a>
<span class="sourceLineNo">139</span> if (RegexUtil.matches(ignoreRegexs, owner)) <a name="line.139"></a>
<span class="sourceLineNo">140</span> {<a name="line.140"></a>
<span class="sourceLineNo">141</span> classData.removeLine(currentLine);<a name="line.141"></a>
<span class="sourceLineNo">142</span> }<a name="line.142"></a>
<span class="sourceLineNo">143</span> }<a name="line.143"></a>
<span class="sourceLineNo">144</span><a name="line.144"></a>
<span class="sourceLineNo">145</span> public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)<a name="line.145"></a>
<span class="sourceLineNo">146</span> {<a name="line.146"></a>
<span class="sourceLineNo">147</span> super.visitLookupSwitchInsn(dflt, keys, labels);<a name="line.147"></a>
<span class="sourceLineNo">148</span> <a name="line.148"></a>
<span class="sourceLineNo">149</span> if (currentLine != 0)<a name="line.149"></a>
<span class="sourceLineNo">150</span> {<a name="line.150"></a>
<span class="sourceLineNo">151</span> switchTargetLabels.put(dflt, new SwitchHolder(currentLine, currentSwitch, -1)); <a name="line.151"></a>
<span class="sourceLineNo">152</span> for (int i = labels.length -1; i >=0; i--)<a name="line.152"></a>
<span class="sourceLineNo">153</span> switchTargetLabels.put(labels[i], new SwitchHolder(currentLine, currentSwitch, i));<a name="line.153"></a>
<span class="sourceLineNo">154</span> classData.addLineSwitch(currentLine, currentSwitch++, keys);<a name="line.154"></a>
<span class="sourceLineNo">155</span> }<a name="line.155"></a>
<span class="sourceLineNo">156</span> }<a name="line.156"></a>
<span class="sourceLineNo">157</span><a name="line.157"></a>
<span class="sourceLineNo">158</span> public void visitTableSwitchInsn(int min, int max, Label dflt, Label[] labels)<a name="line.158"></a>
<span class="sourceLineNo">159</span> {<a name="line.159"></a>
<span class="sourceLineNo">160</span> super.visitTableSwitchInsn(min, max, dflt, labels);<a name="line.160"></a>
<span class="sourceLineNo">161</span> <a name="line.161"></a>
<span class="sourceLineNo">162</span> if (currentLine != 0)<a name="line.162"></a>
<span class="sourceLineNo">163</span> {<a name="line.163"></a>
<span class="sourceLineNo">164</span> switchTargetLabels.put(dflt, new SwitchHolder(currentLine, currentSwitch, -1)); <a name="line.164"></a>
<span class="sourceLineNo">165</span> for (int i = labels.length -1; i >=0; i--)<a name="line.165"></a>
<span class="sourceLineNo">166</span> switchTargetLabels.put(labels[i], new SwitchHolder(currentLine, currentSwitch, i));<a name="line.166"></a>
<span class="sourceLineNo">167</span> classData.addLineSwitch(currentLine, currentSwitch++, min, max);<a name="line.167"></a>
<span class="sourceLineNo">168</span> }<a name="line.168"></a>
<span class="sourceLineNo">169</span> }<a name="line.169"></a>
<span class="sourceLineNo">170</span><a name="line.170"></a>
<span class="sourceLineNo">171</span> protected void removeLine(int lineNumber) <a name="line.171"></a>
<span class="sourceLineNo">172</span> {<a name="line.172"></a>
<span class="sourceLineNo">173</span> classData.removeLine(lineNumber);<a name="line.173"></a>
<span class="sourceLineNo">174</span> }<a name="line.174"></a>
<span class="sourceLineNo">175</span> <a name="line.175"></a>
<span class="sourceLineNo">176</span> protected MethodVisitor getWriterMethodVisitor() <a name="line.176"></a>
<span class="sourceLineNo">177</span> {<a name="line.177"></a>
<span class="sourceLineNo">178</span> return writerMethodVisitor;<a name="line.178"></a>
<span class="sourceLineNo">179</span> }<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
<span class="sourceLineNo">181</span> protected Collection getIgnoreRegexs() <a name="line.181"></a>
<span class="sourceLineNo">182</span> {<a name="line.182"></a>
<span class="sourceLineNo">183</span> return ignoreRegexs;<a name="line.183"></a>
<span class="sourceLineNo">184</span> }<a name="line.184"></a>
<span class="sourceLineNo">185</span><a name="line.185"></a>
<span class="sourceLineNo">186</span> protected Map getJumpTargetLabels() <a name="line.186"></a>
<span class="sourceLineNo">187</span> {<a name="line.187"></a>
<span class="sourceLineNo">188</span> return jumpTargetLabels;<a name="line.188"></a>
<span class="sourceLineNo">189</span> }<a name="line.189"></a>
<span class="sourceLineNo">190</span><a name="line.190"></a>
<span class="sourceLineNo">191</span> protected Map getSwitchTargetLabels() <a name="line.191"></a>
<span class="sourceLineNo">192</span> {<a name="line.192"></a>
<span class="sourceLineNo">193</span> return switchTargetLabels;<a name="line.193"></a>
<span class="sourceLineNo">194</span> }<a name="line.194"></a>
<span class="sourceLineNo">195</span><a name="line.195"></a>
<span class="sourceLineNo">196</span> protected int getMyAccess() <a name="line.196"></a>
<span class="sourceLineNo">197</span> {<a name="line.197"></a>
<span class="sourceLineNo">198</span> return myAccess;<a name="line.198"></a>
<span class="sourceLineNo">199</span> }<a name="line.199"></a>
<span class="sourceLineNo">200</span><a name="line.200"></a>
<span class="sourceLineNo">201</span> protected String getMyDescriptor() <a name="line.201"></a>
<span class="sourceLineNo">202</span> {<a name="line.202"></a>
<span class="sourceLineNo">203</span> return myDescriptor;<a name="line.203"></a>
<span class="sourceLineNo">204</span> }<a name="line.204"></a>
<span class="sourceLineNo">205</span><a name="line.205"></a>
<span class="sourceLineNo">206</span> protected String getMyName() <a name="line.206"></a>
<span class="sourceLineNo">207</span> {<a name="line.207"></a>
<span class="sourceLineNo">208</span> return myName;<a name="line.208"></a>
<span class="sourceLineNo">209</span> }<a name="line.209"></a>
<span class="sourceLineNo">210</span><a name="line.210"></a>
<span class="sourceLineNo">211</span> protected String getOwnerClass() <a name="line.211"></a>
<span class="sourceLineNo">212</span> {<a name="line.212"></a>
<span class="sourceLineNo">213</span> return ownerClass;<a name="line.213"></a>
<span class="sourceLineNo">214</span> }<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span> protected Map getLineLabels() <a name="line.216"></a>
<span class="sourceLineNo">217</span> {<a name="line.217"></a>
<span class="sourceLineNo">218</span> return lineLabels;<a name="line.218"></a>
<span class="sourceLineNo">219</span> }<a name="line.219"></a>
<span class="sourceLineNo">220</span><a name="line.220"></a>
<span class="sourceLineNo">221</span>}<a name="line.221"></a>
</pre>
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