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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.felix.ipojo.manipulation;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.felix.ipojo.metadata.Attribute;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.felix.ipojo.metadata.Element;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.objectweb.asm.ClassReader;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.objectweb.asm.ClassWriter;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.objectweb.asm.Opcodes;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.io.ByteArrayInputStream;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.io.IOException;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.io.InputStream;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.*;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span>/**<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * iPOJO Byte code Manipulator.<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a><a name="line.35"></a> |
| <span class="sourceLineNo">036</span> *<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> */<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>public class Manipulator {<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> /**<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * Store the visited fields : [name of the field, type of the field].<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> */<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> private Map<String, String> m_fields;<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> * Store the interface implemented by the class.<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> */<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> private List<String> m_interfaces;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> /**<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * Store the methods list.<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> */<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> private List<MethodDescriptor> m_methods;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> /**<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * Pojo super class.<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> */<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> private String m_superClass;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span><a name="line.58"></a> |
| <span class="sourceLineNo">059</span> /**<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * List of owned inner classes and internal methods.<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> */<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> private Map<String, List<MethodDescriptor>> m_inners;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> /**<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * Java byte code version.<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> */<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private int m_version;<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> * Was the class already manipulated.<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> */<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> private boolean m_alreadyManipulated;<a name="line.72"></a> |
| <span class="sourceLineNo">073</span><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> /**<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * The manipulated class name.<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> */<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private String m_className;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> /**<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> * Checks the given bytecode, determines if the class was already manipulated, and collect the metadata about the<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * class.<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> * @param origin the bytecode<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> */<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> public void prepare(byte[] origin) throws IOException {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> InputStream is = new ByteArrayInputStream(origin);<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> // First check if the class is already manipulated :<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> ClassReader ckReader = new ClassReader(is);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> ClassChecker ck = new ClassChecker();<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> ckReader.accept(ck, ClassReader.SKIP_FRAMES);<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> is.close();<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> m_fields = ck.getFields(); // Get visited fields (contains only POJO fields)<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> m_className = ck.getClassName();<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> // Get interfaces and super class.<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> m_interfaces = ck.getInterfaces();<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> m_superClass = ck.getSuperClass();<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> // Get the methods list<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> m_methods = ck.getMethods();<a name="line.101"></a> |
| <span class="sourceLineNo">102</span><a name="line.102"></a> |
| <span class="sourceLineNo">103</span> // Methods are not yet collected, but the structure is ready.<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> m_inners = ck.getInnerClassesAndMethods();<a name="line.104"></a> |
| <span class="sourceLineNo">105</span><a name="line.105"></a> |
| <span class="sourceLineNo">106</span> m_version = ck.getClassVersion();<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> m_alreadyManipulated = ck.isAlreadyManipulated();<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> /**<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> * Manipulate the given byte array.<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> * @param origin : original class.<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * @return the manipulated class, if the class is already manipulated, the original class.<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * @throws IOException : if an error occurs during the manipulation.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> */<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> public byte[] manipulate(byte[] origin) throws IOException {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> if (!m_alreadyManipulated) {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> InputStream is2 = new ByteArrayInputStream(origin);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> ClassReader cr0 = new ClassReader(is2);<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> ClassWriter cw0 = new ClassWriter(ClassWriter.COMPUTE_MAXS);<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> //CheckClassAdapter ch = new CheckClassAdapter(cw0);<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> MethodCreator process = new MethodCreator(cw0, this);<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> if (m_version >= Opcodes.V1_6) {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> cr0.accept(process, ClassReader.EXPAND_FRAMES);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> } else {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> cr0.accept(process, 0);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> is2.close();<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> return cw0.toByteArray();<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> } else {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> return origin;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> }<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> }<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> /**<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> * Checks whether the class was already manipulated.<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> * @return {@code true} if the class was already manipulated, {@code false} otherwise<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> */<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> public boolean isAlreadyManipulated() {<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> return m_alreadyManipulated;<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> public static String toQualifiedName(String clazz) {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> return clazz.replace("/", ".");<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> * Compute component type manipulation metadata.<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> * @return the manipulation metadata of the class.<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> */<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> public Element getManipulationMetadata() {<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> Element elem = new Element("Manipulation", "");<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> elem.addAttribute(new Attribute("className", toQualifiedName(m_className)));<a name="line.155"></a> |
| <span class="sourceLineNo">156</span><a name="line.156"></a> |
| <span class="sourceLineNo">157</span> if (m_superClass != null) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> elem.addAttribute(new Attribute("super", m_superClass));<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> }<a name="line.159"></a> |
| <span class="sourceLineNo">160</span><a name="line.160"></a> |
| <span class="sourceLineNo">161</span> for (String m_interface : m_interfaces) {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> Element itf = new Element("Interface", "");<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> Attribute att = new Attribute("name", m_interface);<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> itf.addAttribute(att);<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> elem.addElement(itf);<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> }<a name="line.166"></a> |
| <span class="sourceLineNo">167</span><a name="line.167"></a> |
| <span class="sourceLineNo">168</span> for (Map.Entry<String, String> f : m_fields.entrySet()) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> Element field = new Element("Field", "");<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> Attribute attName = new Attribute("name", f.getKey());<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> Attribute attType = new Attribute("type", f.getValue());<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> field.addAttribute(attName);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> field.addAttribute(attType);<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> elem.addElement(field);<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> }<a name="line.175"></a> |
| <span class="sourceLineNo">176</span><a name="line.176"></a> |
| <span class="sourceLineNo">177</span> for (MethodDescriptor method : m_methods) {<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> elem.addElement(method.getElement());<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> for (Map.Entry<String, List<MethodDescriptor>> inner : m_inners.entrySet()) {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> Element element = new Element("Inner", "");<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> Attribute name = new Attribute("name", extractInnerClassName(toQualifiedName(inner.getKey())));<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> element.addAttribute(name);<a name="line.184"></a> |
| <span class="sourceLineNo">185</span><a name="line.185"></a> |
| <span class="sourceLineNo">186</span> for (MethodDescriptor method : inner.getValue()) {<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> element.addElement(method.getElement());<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> }<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> elem.addElement(element);<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> return elem;<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> }<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> * Extracts the inner class simple name from the qualified name. It extracts the part after the `$` character.<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> * @param clazz the qualified class name<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * @return the simple inner class name<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> */<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> public static String extractInnerClassName(String clazz) {<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> if (!clazz.contains("$")) {<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> return clazz;<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> } else {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> return clazz.substring(clazz.indexOf("$") +1);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> }<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> }<a name="line.206"></a> |
| <span class="sourceLineNo">207</span><a name="line.207"></a> |
| <span class="sourceLineNo">208</span> public Map<String, String> getFields() {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> return m_fields;<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span><a name="line.211"></a> |
| <span class="sourceLineNo">212</span> public List<MethodDescriptor> getMethods() {<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> return m_methods;<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> public Collection<String> getInnerClasses() {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> return new ArrayList<String>(m_inners.keySet());<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> }<a name="line.218"></a> |
| <span class="sourceLineNo">219</span><a name="line.219"></a> |
| <span class="sourceLineNo">220</span> public int getClassVersion() {<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> return m_version;<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> }<a name="line.222"></a> |
| <span class="sourceLineNo">223</span><a name="line.223"></a> |
| <span class="sourceLineNo">224</span> /**<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> * Adds a method to an inner class.<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> * @param name the inner class name<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> * @param md the method descriptor to add<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> */<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> public void addMethodToInnerClass(String name, MethodDescriptor md) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> List<MethodDescriptor> list = m_inners.get(name);<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> if (list == null) {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> list = new ArrayList<MethodDescriptor>();<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> m_inners.put(name, list);<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> list.add(md);<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> }<a name="line.236"></a> |
| <span class="sourceLineNo">237</span><a name="line.237"></a> |
| <span class="sourceLineNo">238</span> /**<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> * Analyzes the given inner class.<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> * @param inner the inner class name<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> * @param bytecode the bytecode of the inner class<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> */<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> public void prepareInnerClass(String inner, byte[] bytecode) throws IOException {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> InputStream is = new ByteArrayInputStream(bytecode);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> ClassReader ckReader = new ClassReader(is);<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> InnerClassChecker ck = new InnerClassChecker(inner, this);<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> ckReader.accept(ck, ClassReader.SKIP_FRAMES);<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> is.close();<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> // The metadata are collected during the visit.<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> }<a name="line.250"></a> |
| <span class="sourceLineNo">251</span><a name="line.251"></a> |
| <span class="sourceLineNo">252</span> /**<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> * Manipulates the inner class. If the outer class was already manipulated does not re-manipulate the inner class.<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> * We consider that the manipulation cycle of the outer and inner classes are the same.<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> * @param inner the inner class name<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> * @param bytecode input (i.e. original) class<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * @return the manipulated class<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * @throws IOException the class cannot be read correctly<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> */<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> public byte[] manipulateInnerClass(String inner, byte[] bytecode) throws IOException {<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> if (!m_alreadyManipulated) {<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> InputStream is1 = new ByteArrayInputStream(bytecode);<a name="line.262"></a> |
| <span class="sourceLineNo">263</span><a name="line.263"></a> |
| <span class="sourceLineNo">264</span> ClassReader cr = new ClassReader(is1);<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> InnerClassAdapter adapter = new InnerClassAdapter(inner, cw, m_className, this);<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> if (m_version >= Opcodes.V1_6) {<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> cr.accept(adapter, ClassReader.EXPAND_FRAMES);<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> } else {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> cr.accept(adapter, 0);<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> }<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> is1.close();<a name="line.272"></a> |
| <span class="sourceLineNo">273</span><a name="line.273"></a> |
| <span class="sourceLineNo">274</span> return cw.toByteArray();<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> } else {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> // Return the unchanged inner class<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> return bytecode;<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> }<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span><a name="line.280"></a> |
| <span class="sourceLineNo">281</span> public List<MethodDescriptor> getMethodsFromInnerClass(String innerClassInternalName) {<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> return m_inners.get(innerClassInternalName);<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> }<a name="line.283"></a> |
| <span class="sourceLineNo">284</span><a name="line.284"></a> |
| <span class="sourceLineNo">285</span> public Map<String, List<MethodDescriptor>> getInnerClassesAndMethods() {<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> // Transform the map to use the simple name of the inner classes.<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> Map<String, List<MethodDescriptor>> map = new HashMap<String, List<MethodDescriptor>>();<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> for (Map.Entry<String, List<MethodDescriptor>> entry : m_inners.entrySet()) {<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> String name = extractInnerClassName(toQualifiedName(entry.getKey()));<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> map.put(name, entry.getValue());<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> return map;<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> }<a name="line.293"></a> |
| <span class="sourceLineNo">294</span>}<a name="line.294"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
