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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) 2005 Jeremy Thomerson<a name="line.5"></a>
<span class="sourceLineNo">006</span> * Copyright (C) 2005 Grzegorz Lukasik<a name="line.6"></a>
<span class="sourceLineNo">007</span> * Copyright (C) 2008 Tri Bao Ho<a name="line.7"></a>
<span class="sourceLineNo">008</span> * Copyright (C) 2009 John Lewis<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Cobertura is free software; you can redistribute it and/or modify<a name="line.10"></a>
<span class="sourceLineNo">011</span> * it under the terms of the GNU General Public License as published<a name="line.11"></a>
<span class="sourceLineNo">012</span> * by the Free Software Foundation; either version 2 of the License,<a name="line.12"></a>
<span class="sourceLineNo">013</span> * or (at your option) any later version.<a name="line.13"></a>
<span class="sourceLineNo">014</span> *<a name="line.14"></a>
<span class="sourceLineNo">015</span> * Cobertura is distributed in the hope that it will be useful, but<a name="line.15"></a>
<span class="sourceLineNo">016</span> * WITHOUT ANY WARRANTY; without even the implied warranty of<a name="line.16"></a>
<span class="sourceLineNo">017</span> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU<a name="line.17"></a>
<span class="sourceLineNo">018</span> * General Public License for more details.<a name="line.18"></a>
<span class="sourceLineNo">019</span> *<a name="line.19"></a>
<span class="sourceLineNo">020</span> * You should have received a copy of the GNU General Public License<a name="line.20"></a>
<span class="sourceLineNo">021</span> * along with Cobertura; if not, write to the Free Software<a name="line.21"></a>
<span class="sourceLineNo">022</span> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307<a name="line.22"></a>
<span class="sourceLineNo">023</span> * USA<a name="line.23"></a>
<span class="sourceLineNo">024</span> */<a name="line.24"></a>
<span class="sourceLineNo">025</span>package net.sourceforge.cobertura.reporting;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.io.IOException;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.HashMap;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.Iterator;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.List;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.Map;<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>import net.sourceforge.cobertura.coveragedata.ClassData;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import net.sourceforge.cobertura.coveragedata.PackageData;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import net.sourceforge.cobertura.coveragedata.ProjectData;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import net.sourceforge.cobertura.coveragedata.SourceFileData;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import net.sourceforge.cobertura.javancss.FunctionMetric;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import net.sourceforge.cobertura.javancss.Javancss;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import net.sourceforge.cobertura.util.FileFinder;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import net.sourceforge.cobertura.util.Source;<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.log4j.Logger;<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>/**<a name="line.45"></a>
<span class="sourceLineNo">046</span> * Allows complexity computing for source files, packages and a whole project. Average<a name="line.46"></a>
<span class="sourceLineNo">047</span> * McCabe's number for methods contained in the specified entity is returned. This class<a name="line.47"></a>
<span class="sourceLineNo">048</span> * depends on FileFinder which is used to map source file names to existing files.<a name="line.48"></a>
<span class="sourceLineNo">049</span> * <a name="line.49"></a>
<span class="sourceLineNo">050</span> * <p>One instance of this class should be used for the same set of source files - an <a name="line.50"></a>
<span class="sourceLineNo">051</span> * object of this class can cache computed results.</p><a name="line.51"></a>
<span class="sourceLineNo">052</span> * <a name="line.52"></a>
<span class="sourceLineNo">053</span> * @author Grzegorz Lukasik<a name="line.53"></a>
<span class="sourceLineNo">054</span> */<a name="line.54"></a>
<span class="sourceLineNo">055</span>public class ComplexityCalculator {<a name="line.55"></a>
<span class="sourceLineNo">056</span> private static final Logger logger = Logger.getLogger(ComplexityCalculator.class);<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span> public static final Complexity ZERO_COMPLEXITY = new Complexity();<a name="line.58"></a>
<span class="sourceLineNo">059</span> <a name="line.59"></a>
<span class="sourceLineNo">060</span> // Finder used to map source file names to existing files<a name="line.60"></a>
<span class="sourceLineNo">061</span> private final FileFinder finder;<a name="line.61"></a>
<span class="sourceLineNo">062</span> <a name="line.62"></a>
<span class="sourceLineNo">063</span> // Contains pairs (String sourceFileName, Complexity complexity)<a name="line.63"></a>
<span class="sourceLineNo">064</span> private Map sourceFileCNNCache = new HashMap();<a name="line.64"></a>
<span class="sourceLineNo">065</span><a name="line.65"></a>
<span class="sourceLineNo">066</span> // Contains pairs (String packageName, Complexity complexity)<a name="line.66"></a>
<span class="sourceLineNo">067</span> private Map packageCNNCache = new HashMap();<a name="line.67"></a>
<span class="sourceLineNo">068</span><a name="line.68"></a>
<span class="sourceLineNo">069</span> /**<a name="line.69"></a>
<span class="sourceLineNo">070</span> * Creates new calculator. Passed {@link FileFinder} will be used to <a name="line.70"></a>
<span class="sourceLineNo">071</span> * map source file names to existing files when needed. <a name="line.71"></a>
<span class="sourceLineNo">072</span> * <a name="line.72"></a>
<span class="sourceLineNo">073</span> * @param finder {@link FileFinder} that allows to find source files<a name="line.73"></a>
<span class="sourceLineNo">074</span> * @throws NullPointerException if finder is null<a name="line.74"></a>
<span class="sourceLineNo">075</span> */<a name="line.75"></a>
<span class="sourceLineNo">076</span> public ComplexityCalculator( FileFinder finder) {<a name="line.76"></a>
<span class="sourceLineNo">077</span> if( finder==null)<a name="line.77"></a>
<span class="sourceLineNo">078</span> throw new NullPointerException();<a name="line.78"></a>
<span class="sourceLineNo">079</span> this.finder = finder;<a name="line.79"></a>
<span class="sourceLineNo">080</span> }<a name="line.80"></a>
<span class="sourceLineNo">081</span> <a name="line.81"></a>
<span class="sourceLineNo">082</span> /**<a name="line.82"></a>
<span class="sourceLineNo">083</span> * Calculates the code complexity number for an input stream.<a name="line.83"></a>
<span class="sourceLineNo">084</span> * "CCN" stands for "code complexity number." This is<a name="line.84"></a>
<span class="sourceLineNo">085</span> * sometimes referred to as McCabe's number. This method<a name="line.85"></a>
<span class="sourceLineNo">086</span> * calculates the average cyclomatic code complexity of all<a name="line.86"></a>
<span class="sourceLineNo">087</span> * methods of all classes in a given directory. <a name="line.87"></a>
<span class="sourceLineNo">088</span> *<a name="line.88"></a>
<span class="sourceLineNo">089</span> * @param file The input stream for which you want to calculate<a name="line.89"></a>
<span class="sourceLineNo">090</span> * the complexity<a name="line.90"></a>
<span class="sourceLineNo">091</span> * @return average complexity for the specified input stream <a name="line.91"></a>
<span class="sourceLineNo">092</span> */<a name="line.92"></a>
<span class="sourceLineNo">093</span> private Complexity getAccumlatedCCNForSource(String sourceFileName, Source source) {<a name="line.93"></a>
<span class="sourceLineNo">094</span> if (source == null)<a name="line.94"></a>
<span class="sourceLineNo">095</span> {<a name="line.95"></a>
<span class="sourceLineNo">096</span> return ZERO_COMPLEXITY;<a name="line.96"></a>
<span class="sourceLineNo">097</span> }<a name="line.97"></a>
<span class="sourceLineNo">098</span> if (!sourceFileName.endsWith(".java"))<a name="line.98"></a>
<span class="sourceLineNo">099</span> {<a name="line.99"></a>
<span class="sourceLineNo">100</span> return ZERO_COMPLEXITY;<a name="line.100"></a>
<span class="sourceLineNo">101</span> }<a name="line.101"></a>
<span class="sourceLineNo">102</span> Javancss javancss = new Javancss(source.getInputStream());<a name="line.102"></a>
<span class="sourceLineNo">103</span><a name="line.103"></a>
<span class="sourceLineNo">104</span> if (javancss.getLastErrorMessage() != null)<a name="line.104"></a>
<span class="sourceLineNo">105</span> {<a name="line.105"></a>
<span class="sourceLineNo">106</span> //there is an error while parsing the java file. log it<a name="line.106"></a>
<span class="sourceLineNo">107</span> logger.warn("JavaNCSS got an error while parsing the java " + source.getOriginDesc() + "\n" <a name="line.107"></a>
<span class="sourceLineNo">108</span> + javancss.getLastErrorMessage());<a name="line.108"></a>
<span class="sourceLineNo">109</span> }<a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span> List methodMetrics = javancss.getFunctionMetrics();<a name="line.111"></a>
<span class="sourceLineNo">112</span> int classCcn = 0;<a name="line.112"></a>
<span class="sourceLineNo">113</span> for( Iterator method = methodMetrics.iterator(); method.hasNext();)<a name="line.113"></a>
<span class="sourceLineNo">114</span> {<a name="line.114"></a>
<span class="sourceLineNo">115</span> FunctionMetric singleMethodMetrics = (FunctionMetric)method.next();<a name="line.115"></a>
<span class="sourceLineNo">116</span> classCcn += singleMethodMetrics.ccn;<a name="line.116"></a>
<span class="sourceLineNo">117</span> }<a name="line.117"></a>
<span class="sourceLineNo">118</span> <a name="line.118"></a>
<span class="sourceLineNo">119</span> return new Complexity( classCcn, methodMetrics.size());<a name="line.119"></a>
<span class="sourceLineNo">120</span> }<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span> /**<a name="line.122"></a>
<span class="sourceLineNo">123</span> * Calculates the code complexity number for single source file.<a name="line.123"></a>
<span class="sourceLineNo">124</span> * "CCN" stands for "code complexity number." This is<a name="line.124"></a>
<span class="sourceLineNo">125</span> * sometimes referred to as McCabe's number. This method<a name="line.125"></a>
<span class="sourceLineNo">126</span> * calculates the average cyclomatic code complexity of all<a name="line.126"></a>
<span class="sourceLineNo">127</span> * methods of all classes in a given directory. <a name="line.127"></a>
<span class="sourceLineNo">128</span> * @param sourceFileName <a name="line.128"></a>
<span class="sourceLineNo">129</span> *<a name="line.129"></a>
<span class="sourceLineNo">130</span> * @param file The source file for which you want to calculate<a name="line.130"></a>
<span class="sourceLineNo">131</span> * the complexity<a name="line.131"></a>
<span class="sourceLineNo">132</span> * @return average complexity for the specified source file <a name="line.132"></a>
<span class="sourceLineNo">133</span> * @throws IOException <a name="line.133"></a>
<span class="sourceLineNo">134</span> */<a name="line.134"></a>
<span class="sourceLineNo">135</span> private Complexity getAccumlatedCCNForSingleFile(String sourceFileName) throws IOException {<a name="line.135"></a>
<span class="sourceLineNo">136</span> Source source = finder.getSource(sourceFileName);<a name="line.136"></a>
<span class="sourceLineNo">137</span> try<a name="line.137"></a>
<span class="sourceLineNo">138</span> {<a name="line.138"></a>
<span class="sourceLineNo">139</span> return getAccumlatedCCNForSource(sourceFileName, source);<a name="line.139"></a>
<span class="sourceLineNo">140</span> }<a name="line.140"></a>
<span class="sourceLineNo">141</span> finally<a name="line.141"></a>
<span class="sourceLineNo">142</span> {<a name="line.142"></a>
<span class="sourceLineNo">143</span> if (source != null)<a name="line.143"></a>
<span class="sourceLineNo">144</span> {<a name="line.144"></a>
<span class="sourceLineNo">145</span> source.close();<a name="line.145"></a>
<span class="sourceLineNo">146</span> }<a name="line.146"></a>
<span class="sourceLineNo">147</span> }<a name="line.147"></a>
<span class="sourceLineNo">148</span> }<a name="line.148"></a>
<span class="sourceLineNo">149</span><a name="line.149"></a>
<span class="sourceLineNo">150</span> /**<a name="line.150"></a>
<span class="sourceLineNo">151</span> * Computes CCN for all sources contained in the project.<a name="line.151"></a>
<span class="sourceLineNo">152</span> * CCN for whole project is an average CCN for source files.<a name="line.152"></a>
<span class="sourceLineNo">153</span> * All source files for which CCN cannot be computed are ignored.<a name="line.153"></a>
<span class="sourceLineNo">154</span> * <a name="line.154"></a>
<span class="sourceLineNo">155</span> * @param projectData project to compute CCN for<a name="line.155"></a>
<span class="sourceLineNo">156</span> * @throws NullPointerException if projectData is null<a name="line.156"></a>
<span class="sourceLineNo">157</span> * @return CCN for project or 0 if no source files were found<a name="line.157"></a>
<span class="sourceLineNo">158</span> */<a name="line.158"></a>
<span class="sourceLineNo">159</span> public double getCCNForProject( ProjectData projectData) {<a name="line.159"></a>
<span class="sourceLineNo">160</span> // Sum complexity for all packages<a name="line.160"></a>
<span class="sourceLineNo">161</span> Complexity act = new Complexity();<a name="line.161"></a>
<span class="sourceLineNo">162</span> for( Iterator it = projectData.getPackages().iterator(); it.hasNext();) {<a name="line.162"></a>
<span class="sourceLineNo">163</span> PackageData packageData = (PackageData)it.next();<a name="line.163"></a>
<span class="sourceLineNo">164</span> act.add( getCCNForPackageInternal( packageData));<a name="line.164"></a>
<span class="sourceLineNo">165</span> }<a name="line.165"></a>
<span class="sourceLineNo">166</span><a name="line.166"></a>
<span class="sourceLineNo">167</span> // Return average CCN for source files<a name="line.167"></a>
<span class="sourceLineNo">168</span> return act.averageCCN();<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> /**<a name="line.171"></a>
<span class="sourceLineNo">172</span> * Computes CCN for all sources contained in the specified package.<a name="line.172"></a>
<span class="sourceLineNo">173</span> * All source files that cannot be mapped to existing files are ignored.<a name="line.173"></a>
<span class="sourceLineNo">174</span> * <a name="line.174"></a>
<span class="sourceLineNo">175</span> * @param packageData package to compute CCN for<a name="line.175"></a>
<span class="sourceLineNo">176</span> * @throws NullPointerException if <code>packageData</code> is <code>null</code><a name="line.176"></a>
<span class="sourceLineNo">177</span> * @return CCN for the specified package or 0 if no source files were found<a name="line.177"></a>
<span class="sourceLineNo">178</span> */<a name="line.178"></a>
<span class="sourceLineNo">179</span> public double getCCNForPackage(PackageData packageData) {<a name="line.179"></a>
<span class="sourceLineNo">180</span> return getCCNForPackageInternal(packageData).averageCCN();<a name="line.180"></a>
<span class="sourceLineNo">181</span> }<a name="line.181"></a>
<span class="sourceLineNo">182</span><a name="line.182"></a>
<span class="sourceLineNo">183</span> private Complexity getCCNForPackageInternal(PackageData packageData) {<a name="line.183"></a>
<span class="sourceLineNo">184</span> // Return CCN if computed earlier<a name="line.184"></a>
<span class="sourceLineNo">185</span> Complexity cachedCCN = (Complexity) packageCNNCache.get( packageData.getName());<a name="line.185"></a>
<span class="sourceLineNo">186</span> if( cachedCCN!=null) {<a name="line.186"></a>
<span class="sourceLineNo">187</span> return cachedCCN;<a name="line.187"></a>
<span class="sourceLineNo">188</span> }<a name="line.188"></a>
<span class="sourceLineNo">189</span> <a name="line.189"></a>
<span class="sourceLineNo">190</span> // Compute CCN for all source files inside package<a name="line.190"></a>
<span class="sourceLineNo">191</span> Complexity act = new Complexity();<a name="line.191"></a>
<span class="sourceLineNo">192</span> for( Iterator it = packageData.getSourceFiles().iterator(); it.hasNext();) {<a name="line.192"></a>
<span class="sourceLineNo">193</span> SourceFileData sourceData = (SourceFileData)it.next();<a name="line.193"></a>
<span class="sourceLineNo">194</span> act.add( getCCNForSourceFileNameInternal( sourceData.getName()));<a name="line.194"></a>
<span class="sourceLineNo">195</span> }<a name="line.195"></a>
<span class="sourceLineNo">196</span> <a name="line.196"></a>
<span class="sourceLineNo">197</span> // Cache result and return it<a name="line.197"></a>
<span class="sourceLineNo">198</span> packageCNNCache.put( packageData.getName(), act);<a name="line.198"></a>
<span class="sourceLineNo">199</span> return act;<a name="line.199"></a>
<span class="sourceLineNo">200</span> }<a name="line.200"></a>
<span class="sourceLineNo">201</span><a name="line.201"></a>
<span class="sourceLineNo">202</span> <a name="line.202"></a>
<span class="sourceLineNo">203</span> /**<a name="line.203"></a>
<span class="sourceLineNo">204</span> * Computes CCN for single source file.<a name="line.204"></a>
<span class="sourceLineNo">205</span> * <a name="line.205"></a>
<span class="sourceLineNo">206</span> * @param sourceFile source file to compute CCN for<a name="line.206"></a>
<span class="sourceLineNo">207</span> * @throws NullPointerException if <code>sourceFile</code> is <code>null</code><a name="line.207"></a>
<span class="sourceLineNo">208</span> * @return CCN for the specified source file, 0 if cannot map <code>sourceFile</code> to existing file<a name="line.208"></a>
<span class="sourceLineNo">209</span> */<a name="line.209"></a>
<span class="sourceLineNo">210</span> public double getCCNForSourceFile(SourceFileData sourceFile) {<a name="line.210"></a>
<span class="sourceLineNo">211</span> return getCCNForSourceFileNameInternal( sourceFile.getName()).averageCCN();<a name="line.211"></a>
<span class="sourceLineNo">212</span> }<a name="line.212"></a>
<span class="sourceLineNo">213</span><a name="line.213"></a>
<span class="sourceLineNo">214</span> private Complexity getCCNForSourceFileNameInternal(String sourceFileName) {<a name="line.214"></a>
<span class="sourceLineNo">215</span> // Return CCN if computed earlier<a name="line.215"></a>
<span class="sourceLineNo">216</span> Complexity cachedCCN = (Complexity) sourceFileCNNCache.get( sourceFileName);<a name="line.216"></a>
<span class="sourceLineNo">217</span> if( cachedCCN!=null) {<a name="line.217"></a>
<span class="sourceLineNo">218</span> return cachedCCN;<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> // Compute CCN and cache it for further use<a name="line.221"></a>
<span class="sourceLineNo">222</span> Complexity result = ZERO_COMPLEXITY;<a name="line.222"></a>
<span class="sourceLineNo">223</span> try {<a name="line.223"></a>
<span class="sourceLineNo">224</span> result = getAccumlatedCCNForSingleFile( sourceFileName );<a name="line.224"></a>
<span class="sourceLineNo">225</span> } catch( IOException ex) {<a name="line.225"></a>
<span class="sourceLineNo">226</span> logger.info( "Cannot find source file during CCN computation, source=["+sourceFileName+"]");<a name="line.226"></a>
<span class="sourceLineNo">227</span> }<a name="line.227"></a>
<span class="sourceLineNo">228</span> sourceFileCNNCache.put( sourceFileName, result);<a name="line.228"></a>
<span class="sourceLineNo">229</span> return result;<a name="line.229"></a>
<span class="sourceLineNo">230</span> }<a name="line.230"></a>
<span class="sourceLineNo">231</span><a name="line.231"></a>
<span class="sourceLineNo">232</span> /**<a name="line.232"></a>
<span class="sourceLineNo">233</span> * Computes CCN for source file the specified class belongs to.<a name="line.233"></a>
<span class="sourceLineNo">234</span> * <a name="line.234"></a>
<span class="sourceLineNo">235</span> * @param classData package to compute CCN for<a name="line.235"></a>
<span class="sourceLineNo">236</span> * @return CCN for source file the specified class belongs to<a name="line.236"></a>
<span class="sourceLineNo">237</span> * @throws NullPointerException if <code>classData</code> is <code>null</code><a name="line.237"></a>
<span class="sourceLineNo">238</span> */<a name="line.238"></a>
<span class="sourceLineNo">239</span> public double getCCNForClass(ClassData classData) {<a name="line.239"></a>
<span class="sourceLineNo">240</span> return getCCNForSourceFileNameInternal( classData.getSourceFileName()).averageCCN();<a name="line.240"></a>
<span class="sourceLineNo">241</span> }<a name="line.241"></a>
<span class="sourceLineNo">242</span><a name="line.242"></a>
<span class="sourceLineNo">243</span><a name="line.243"></a>
<span class="sourceLineNo">244</span> /**<a name="line.244"></a>
<span class="sourceLineNo">245</span> * Represents complexity of source file, package or project. Stores the number of<a name="line.245"></a>
<span class="sourceLineNo">246</span> * methods inside entity and accumlated complexity for these methods.<a name="line.246"></a>
<span class="sourceLineNo">247</span> */<a name="line.247"></a>
<span class="sourceLineNo">248</span> private static class Complexity {<a name="line.248"></a>
<span class="sourceLineNo">249</span> private double accumlatedCCN;<a name="line.249"></a>
<span class="sourceLineNo">250</span> private int methodsNum;<a name="line.250"></a>
<span class="sourceLineNo">251</span> public Complexity(double accumlatedCCN, int methodsNum) {<a name="line.251"></a>
<span class="sourceLineNo">252</span> this.accumlatedCCN = accumlatedCCN;<a name="line.252"></a>
<span class="sourceLineNo">253</span> this.methodsNum = methodsNum;<a name="line.253"></a>
<span class="sourceLineNo">254</span> }<a name="line.254"></a>
<span class="sourceLineNo">255</span> public Complexity() {<a name="line.255"></a>
<span class="sourceLineNo">256</span> this(0,0);<a name="line.256"></a>
<span class="sourceLineNo">257</span> }<a name="line.257"></a>
<span class="sourceLineNo">258</span> public double averageCCN() {<a name="line.258"></a>
<span class="sourceLineNo">259</span> if( methodsNum==0) {<a name="line.259"></a>
<span class="sourceLineNo">260</span> return 0;<a name="line.260"></a>
<span class="sourceLineNo">261</span> }<a name="line.261"></a>
<span class="sourceLineNo">262</span> return accumlatedCCN/methodsNum;<a name="line.262"></a>
<span class="sourceLineNo">263</span> }<a name="line.263"></a>
<span class="sourceLineNo">264</span> public void add( Complexity second) {<a name="line.264"></a>
<span class="sourceLineNo">265</span> accumlatedCCN += second.accumlatedCCN;<a name="line.265"></a>
<span class="sourceLineNo">266</span> methodsNum += second.methodsNum;<a name="line.266"></a>
<span class="sourceLineNo">267</span> }<a name="line.267"></a>
<span class="sourceLineNo">268</span> }<a name="line.268"></a>
<span class="sourceLineNo">269</span>}<a name="line.269"></a>
</pre>
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