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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 java.util.Set;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.objectweb.asm.AnnotationVisitor;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.objectweb.asm.MethodVisitor;<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>import org.objectweb.asm.commons.GeneratorAdapter;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span><a name="line.28"></a> |
| <span class="sourceLineNo">029</span>/**<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * Insert code calling callbacks at the entry and before the exit of a method.<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * Moreover it replaces all GETFIELD and SETFIELD by getter and setter invocation.<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a><a name="line.32"></a> |
| <span class="sourceLineNo">033</span> */<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>public class MethodCodeAdapter extends GeneratorAdapter implements Opcodes {<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span> /**<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * The owner class of the field. m_owner : String<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> */<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> private String m_owner;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> /**<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * Contained fields.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> */<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private Set<String> m_fields;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> /**<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * MethodCodeAdapter constructor.<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * @param mv : MethodVisitor<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * @param owner : Name of the class<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * @param access : Method access<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * @param name : Method name<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * @param desc : Method descriptor<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * @param fields : Contained fields<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> */<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> public MethodCodeAdapter(final MethodVisitor mv, final String owner, int access, String name, String desc, Set<String> fields) {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> super(mv, access, name, desc);<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> m_owner = owner;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> m_fields = fields;<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> /**<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * Visit an instruction modifying a method (GETFIELD/PUTFIELD).<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * @see org.objectweb.asm.MethodVisitor#visitFieldInsn(int, String, String, String)<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * @param opcode : visited operation code<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * @param owner : owner of the field<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * @param name : name of the field<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * @param desc : descriptor of the field<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> */<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> public void visitFieldInsn(final int opcode, final String owner, final String name, final String desc) {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> if (owner.equals(m_owner) && m_fields.contains(name)) {<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> if (opcode == GETFIELD) {<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> String gDesc = "()" + desc;<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> visitMethodInsn(INVOKEVIRTUAL, owner, "__get" + name, gDesc);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> return;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> } else if (opcode == PUTFIELD) {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> String sDesc = "(" + desc + ")V";<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> visitMethodInsn(INVOKEVIRTUAL, owner, "__set" + name, sDesc);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> return;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> }<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> }<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> super.visitFieldInsn(opcode, owner, name, desc);<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> /**<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * Visits an annotation.<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * If the annotation is visible, the annotation is removed. In fact<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * the annotation was already moved to the method replacing this one.<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * If the annotation is not visible, this annotation is kept on this method.<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * @param name the name of the annotation<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * @param visible the annotation visibility<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * @return the <code>null</code> if the annotation is visible, otherwise returns<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * {@link GeneratorAdapter#visitAnnotation(String, boolean)}<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * @see org.objectweb.asm.MethodAdapter#visitAnnotation(java.lang.String, boolean)<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> */<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> public AnnotationVisitor visitAnnotation(String name, boolean visible) {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> // Annotations are moved to the injected constructor.<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> if (visible) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> return null;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> } else {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> return super.visitAnnotation(name, visible);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> }<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> /**<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * Visits a parameter annotation.<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * @param id the parameter number.<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> * @param name the annotation name<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> * @param visible if te annotation visibility<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> * @return the <code>null</code> if the annotation is visible, otherwise returns<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> * {@link GeneratorAdapter#visitAnnotation(String, boolean)}<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> * @see org.objectweb.asm.MethodAdapter#visitParameterAnnotation(int, java.lang.String, boolean)<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> */<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> public AnnotationVisitor visitParameterAnnotation(int id, String name,<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> boolean visible) {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> if (visible) {<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> return null;<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> } else {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> return super.visitParameterAnnotation(id, name, visible);<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> }<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> |
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| </pre> |
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