You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@felix.apache.org by ri...@apache.org on 2006/07/26 12:40:40 UTC
svn commit: r425699 -
/incubator/felix/trunk/org.apache.felix.ipojo.plugin/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java
Author: rickhall
Date: Wed Jul 26 03:40:40 2006
New Revision: 425699
URL: http://svn.apache.org/viewvc?rev=425699&view=rev
Log:
I forgot to add this class in the last commit (FELIX-99).
Added:
incubator/felix/trunk/org.apache.felix.ipojo.plugin/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java (with props)
Added: incubator/felix/trunk/org.apache.felix.ipojo.plugin/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java
URL: http://svn.apache.org/viewvc/incubator/felix/trunk/org.apache.felix.ipojo.plugin/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java?rev=425699&view=auto
==============================================================================
--- incubator/felix/trunk/org.apache.felix.ipojo.plugin/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java (added)
+++ incubator/felix/trunk/org.apache.felix.ipojo.plugin/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java Wed Jul 26 03:40:40 2006
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2006 The Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+package org.apache.felix.ipojo.manipulation;
+
+import java.util.logging.Level;
+
+import org.apache.felix.ipojo.plugin.IPojoPluginConfiguration;
+import org.objectweb.asm.Label;
+import org.objectweb.asm.MethodAdapter;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+
+/**
+ * Constructor Adapter : add a component manager argument inside a constructor.
+ * @author <a href="mailto:felix-dev@incubator.apache.org">Felix Project Team</a>
+ */
+public class ConstructorCodeAdapter extends MethodAdapter implements Opcodes {
+
+ /** The owner class of the field.
+ * m_owner : String
+ */
+ private String m_owner;
+
+ private boolean m_superDetected;
+
+ /** PropertyCodeAdapter constructor.
+ * A new FiledCodeAdapter should be create for each method visit.
+ * @param mv MethodVisitor
+ * @param owner Name of the class
+ */
+ public ConstructorCodeAdapter(final MethodVisitor mv, final String owner) {
+ super(mv);
+ m_owner = owner;
+ System.out.println("Create a constructor adapter");
+ m_superDetected = false;
+ }
+
+
+ /** Visit Method for Field instance (GETFIELD).
+ * @see org.objectweb.asm.MethodVisitor#visitFieldInsn(int, String, String, String)
+ * @param opcode : visited operation code
+ * @param owner : owner of the field
+ * @param name : name of the field
+ * @param desc : decriptor of the field
+ */
+ public void visitFieldInsn(
+ final int opcode,
+ final String owner,
+ final String name,
+ final String desc) {
+ if (owner.equals(m_owner)) {
+ if (opcode == GETFIELD) {
+ IPojoPluginConfiguration.getLogger().log(Level.INFO, "Manipulate a GETFIELD on : " + name);
+ String gDesc = "()" + desc;
+ visitMethodInsn(INVOKEVIRTUAL, owner, "_get" + name, gDesc);
+ return;
+ } else
+ if (opcode == PUTFIELD) {
+ // replaces PUTFIELD f by INVOKESPECIAL _setf
+ IPojoPluginConfiguration.getLogger().log(Level.INFO, "Manipulate a PUTFIELD on : " + name);
+ String sDesc = "(" + desc + ")V";
+ visitMethodInsn(INVOKESPECIAL, owner, "_set" + name, sDesc);
+ return;
+ }
+ }
+ super.visitFieldInsn(opcode, owner, name, desc);
+ }
+
+ public void visitMethodInsn(int opcode, String owner, String name, String desc) {
+ // A method call is detected, check if it is the super call :
+ if(!m_superDetected) {
+ m_superDetected = true;
+ // The first invocation is the super call
+ // 1) Visit the super constructor :
+ mv.visitVarInsn(ALOAD, 0);
+ mv.visitMethodInsn(opcode, owner, name, desc); // Super constructor invocation
+
+ // 2) Load the object and the component manager argument
+ mv.visitVarInsn(ALOAD, 0);
+ //mv.visitVarInsn(ALOAD, Type.getArgumentTypes(m_constructorDesc).length);
+ mv.visitVarInsn(ALOAD, 1); // CM is always the first argument
+ // 3) Initialize the field
+ mv.visitMethodInsn(INVOKESPECIAL, m_owner, "_setComponentManager", "(Lorg/apache/felix/ipojo/ComponentManager;)V");
+ // insertion finished
+ }
+ else { mv.visitMethodInsn(opcode, owner, name, desc); }
+ }
+
+ public void visitVarInsn(int opcode, int var) {
+ if(!m_superDetected) { return; } // Do nothing the ALOAD 0 will be injected by visitMethodInsn
+ else {
+ if (var == 0) { mv.visitVarInsn(opcode, var); } // ALOAD 0 (THIS)
+ else { mv.visitVarInsn(opcode, var+1); } // All other variable count
+ }
+ }
+
+ public void visitIincInsn(int var, int increment) {
+ if(var != 0) { mv.visitIincInsn(var+1, increment); }
+ else { mv.visitIincInsn(var, increment); } // Increment the current object ???
+ }
+
+ public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) {
+ if(index == 0) {
+ mv.visitLocalVariable(name, desc, signature, start, end, index);
+ mv.visitLocalVariable("_manager", "Lorg/apache/felix/ipojo/ComponentManager;", null, start, end, 1);
+ IPojoPluginConfiguration.getLogger().log(Level.INFO, "Local Variable : " + name + " index = " + index + " desc = " + desc);
+ IPojoPluginConfiguration.getLogger().log(Level.INFO, "Local Variable : " + "_manager" + " index = " + 1 + " desc = " + "Lorg/apache/felix/ipojo/ComponentManager;");
+ }
+ mv.visitLocalVariable(name, desc, signature, start, end, index+1);
+ IPojoPluginConfiguration.getLogger().log(Level.INFO, "Local Variable : " + name + " index = " + index + " desc = " + desc);
+ }
+
+ public void visitMaxs(int maxStack, int maxLocals) {
+ mv.visitMaxs(maxStack, maxLocals+1);
+ }
+}
+
+
+
Propchange: incubator/felix/trunk/org.apache.felix.ipojo.plugin/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java
------------------------------------------------------------------------------
svn:eol-style = native