| /* | |
| * Licensed to the Apache Software Foundation (ASF) under one | |
| * or more contributor license agreements. See the NOTICE file | |
| * distributed with this work for additional information | |
| * regarding copyright ownership. The ASF licenses this file | |
| * to you 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.ArrayList; | |
| import java.util.Iterator; | |
| import java.util.List; | |
| import java.util.Map; | |
| import java.util.Set; | |
| import org.objectweb.asm.ClassAdapter; | |
| import org.objectweb.asm.ClassVisitor; | |
| import org.objectweb.asm.FieldVisitor; | |
| import org.objectweb.asm.Label; | |
| import org.objectweb.asm.MethodVisitor; | |
| import org.objectweb.asm.Opcodes; | |
| import org.objectweb.asm.Type; | |
| import org.objectweb.asm.commons.GeneratorAdapter; | |
| /** | |
| * iPOJO Class Adapter. | |
| * This class adapt the visited class to link the class with the container. | |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> | |
| */ | |
| public class MethodCreator extends ClassAdapter implements Opcodes { | |
| /** | |
| * Instance Manager Field. | |
| */ | |
| public static final String IM_FIELD = "__IM"; | |
| /** | |
| * All POJO method will be renamed by using this prefix. | |
| */ | |
| private static final String PREFIX = "__"; | |
| /** | |
| * POJO class. | |
| */ | |
| private static final String POJO = "org/apache/felix/ipojo/Pojo"; | |
| /** | |
| * Filed flag prefix. | |
| */ | |
| private static final String FIELD_FLAG_PREFIX = "__F"; | |
| /** | |
| * MEthof flag prefix. | |
| */ | |
| private static final String METHOD_FLAG_PREFIX = "__M"; | |
| /** | |
| * onEntry method name. | |
| */ | |
| private static final String ENTRY = "onEntry"; | |
| /** | |
| * onExit method name. | |
| */ | |
| private static final String EXIT = "onExit"; | |
| /** | |
| * on Error method name. | |
| */ | |
| private static final String ERROR = "onError"; | |
| /** | |
| * onGet method name. | |
| */ | |
| private static final String GET = "onGet"; | |
| /** | |
| * onSet method name. | |
| */ | |
| private static final String SET = "onSet"; | |
| /** | |
| * Name of the current manipulated class. | |
| */ | |
| private String m_owner; | |
| /** | |
| * Set of fields detected in the class. | |
| * (this set is given by the previous analysis) | |
| */ | |
| private Set m_fields; | |
| /** | |
| * List of methods contained in the class. | |
| * This set contains method id. | |
| */ | |
| private List m_methods = new ArrayList(); // Contains method id. | |
| /** | |
| * Constructor. | |
| * @param arg0 : class visitor. | |
| * @param fields : fields map detected during the previous class analysis. | |
| */ | |
| public MethodCreator(ClassVisitor arg0, Map fields) { | |
| super(arg0); | |
| m_fields = fields.keySet(); | |
| } | |
| /** | |
| * Vist method. | |
| * This method store the current class name. | |
| * Moreover the POJO interface is added to the list of implemented interface. | |
| * Then the Instance manager field is added. | |
| * @param version : version | |
| * @param access : access flag | |
| * @param name : class name | |
| * @param signature : signature | |
| * @param superName : parent class | |
| * @param interfaces : implemented interface | |
| * @see org.objectweb.asm.ClassAdapter#visit(int, int, java.lang.String, java.lang.String, java.lang.String, java.lang.String[]) | |
| */ | |
| public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) { | |
| m_owner = name; | |
| addPOJOInterface(version, access, name, signature, superName, interfaces); | |
| addIMField(); | |
| } | |
| /** | |
| * A method is visited. | |
| * This method does not manipulate clinit and class$ methods. | |
| * In the case of a constructor, this method will generate a constructor with the instance manager | |
| * and will adapt the current constructor to call this constructor. | |
| * For standard method, this method will create method header, rename the current method and adapt it. | |
| * @param access : access flag. | |
| * @param name : name of the method | |
| * @param desc : method descriptor | |
| * @param signature : signature | |
| * @param exceptions : declared exceptions. | |
| * @return the MethodVisitor wichi will visit the method code. | |
| * @see org.objectweb.asm.ClassAdapter#visitMethod(int, java.lang.String, java.lang.String, java.lang.String, java.lang.String[]) | |
| */ | |
| public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) { | |
| // Avoid manipulating special methods | |
| if (name.equals("<clinit>") || name.equals("class$")) { return super.visitMethod(access, name, desc, signature, exceptions); } | |
| // The constructor is manipulated separately | |
| if (name.equals("<init>")) { | |
| //TODO : do not manipulate non matching constructor. | |
| // 1) change the constructor descriptor (add a component manager arg as first argument) | |
| String newDesc = desc.substring(1); | |
| newDesc = "(Lorg/apache/felix/ipojo/InstanceManager;" + newDesc; | |
| Type[] args = Type.getArgumentTypes(desc); | |
| if (args.length == 0) { | |
| generateEmptyConstructor(access, signature, exceptions); | |
| } else if (args.length == 1 && args[0].getClassName().equals("org.osgi.framework.BundleContext")) { | |
| generateBCConstructor(access, signature, exceptions); | |
| } else { | |
| // Do nothing, the constructor does not match. | |
| return cv.visitMethod(access, name, desc, signature, exceptions); | |
| } | |
| // Insert the new constructor | |
| MethodVisitor mv = super.visitMethod(ACC_PRIVATE, "<init>", newDesc, signature, exceptions); | |
| return new ConstructorCodeAdapter(mv, m_owner, m_fields, ACC_PRIVATE, name, newDesc); | |
| } | |
| if ((access & ACC_STATIC) == ACC_STATIC) { return super.visitMethod(access, name, desc, signature, exceptions); } | |
| generateMethodHeader(access, name, desc, signature, exceptions); | |
| FieldVisitor flagField = cv.visitField(Opcodes.ACC_PRIVATE, generateMethodFlag(name, desc), "Z", null, null); | |
| flagField.visitEnd(); | |
| MethodVisitor mv = super.visitMethod(ACC_PRIVATE, PREFIX + name, desc, signature, exceptions); | |
| return new MethodCodeAdapter(mv, m_owner, ACC_PRIVATE, PREFIX + name, desc, m_fields); | |
| } | |
| /** | |
| * Visit a Field. | |
| * This field access is replaced by an invocation to the getter method or to the setter method. | |
| * (except for static field). | |
| * Inject the getter and the setter method for this field. | |
| * @see org.objectweb.asm.ClassVisitor#visitField(int, java.lang.String, java.lang.String, java.lang.String, java.lang.Object) | |
| * @param access : access modifier | |
| * @param name : name of the field | |
| * @param desc : description of the field | |
| * @param signature : signature of the field | |
| * @param value : value of the field | |
| * @return FieldVisitor : null | |
| */ | |
| public FieldVisitor visitField(final int access, final String name, final String desc, final String signature, final Object value) { | |
| if ((access & ACC_STATIC) == 0) { | |
| FieldVisitor flag = cv.visitField(Opcodes.ACC_PRIVATE, FIELD_FLAG_PREFIX + name, "Z", null, null); | |
| flag.visitEnd(); | |
| Type type = Type.getType(desc); | |
| if (type.getSort() == Type.ARRAY) { | |
| String gDesc = "()" + desc; | |
| createArrayGetter(name, gDesc, type); | |
| // Generates setter method | |
| String sDesc = "(" + desc + ")V"; | |
| createArraySetter(name, sDesc, type); | |
| } else { | |
| // Generate the getter method | |
| String gDesc = "()" + desc; | |
| createSimpleGetter(name, gDesc, type); | |
| // Generates setter method | |
| String sDesc = "(" + desc + ")V"; | |
| createSimpleSetter(name, sDesc, type); | |
| } | |
| } | |
| return cv.visitField(access, name, desc, signature, value); | |
| } | |
| /** | |
| * Create a constructor to call the manipulated constructor. | |
| * This constructor does not have any argument. It will call the manipulated | |
| * constructor with a null instance manager. | |
| * @param access : access flag | |
| * @param signature : method signature | |
| * @param exceptions : declared exception | |
| */ | |
| private void generateEmptyConstructor(int access, String signature, String[] exceptions) { | |
| MethodVisitor mv = cv.visitMethod(access, "<init>", "()V", signature, exceptions); | |
| mv.visitCode(); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitInsn(ACONST_NULL); | |
| mv.visitMethodInsn(INVOKESPECIAL, m_owner, "<init>", "(Lorg/apache/felix/ipojo/InstanceManager;)V"); | |
| mv.visitInsn(RETURN); | |
| mv.visitMaxs(0, 0); | |
| mv.visitEnd(); | |
| } | |
| /** | |
| * Create a constructor to call the manipulated constructor. | |
| * This constructor has one argument (the bundle context). It will call the manipulated | |
| * constructor with a null instance manager. | |
| * @param access : access flag | |
| * @param signature : method signature | |
| * @param exceptions : declared exception | |
| */ | |
| private void generateBCConstructor(int access, String signature, String[] exceptions) { | |
| MethodVisitor mv = cv.visitMethod(access, "<init>", "(Lorg/osgi/framework/BundleContext;)V", signature, exceptions); | |
| mv.visitCode(); | |
| Label l0 = new Label(); | |
| mv.visitLabel(l0); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitInsn(ACONST_NULL); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitMethodInsn(INVOKESPECIAL, m_owner, "<init>", "(Lorg/apache/felix/ipojo/InstanceManager;Lorg/osgi/framework/BundleContext;)V"); | |
| mv.visitInsn(RETURN); | |
| mv.visitMaxs(0, 0); | |
| mv.visitEnd(); | |
| } | |
| /** | |
| * Generate the method header of a POJO method. | |
| * This method header encapsulate the POJO method call to | |
| * signal entry exit and error to the container. | |
| * @param access : access flag. | |
| * @param name : method name. | |
| * @param desc : method descriptor. | |
| * @param signature : method signature. | |
| * @param exceptions : declared exceptions. | |
| */ | |
| private void generateMethodHeader(int access, String name, String desc, String signature, String[] exceptions) { | |
| GeneratorAdapter mv = new GeneratorAdapter(cv.visitMethod(access, name, desc, signature, exceptions), access, name, desc); | |
| mv.visitCode(); | |
| Type returnType = Type.getReturnType(desc); | |
| // Compute result and exception stack location | |
| int result = -1; | |
| int exception = -1; | |
| //int arguments = mv.newLocal(Type.getType((new Object[0]).getClass())); | |
| if (returnType.getSort() != Type.VOID) { | |
| // The method returns something | |
| result = mv.newLocal(returnType); | |
| exception = mv.newLocal(Type.getType(Throwable.class)); | |
| } else { | |
| exception = mv.newLocal(Type.getType(Throwable.class)); | |
| } | |
| Label l0 = new Label(); | |
| Label l1 = new Label(); | |
| Label l2 = new Label(); | |
| mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Throwable"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, generateMethodFlag(name, desc), "Z"); | |
| mv.visitJumpInsn(IFNE, l0); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.loadArgs(); | |
| mv.visitMethodInsn(INVOKESPECIAL, m_owner, PREFIX + name, desc); | |
| mv.visitInsn(returnType.getOpcode(IRETURN)); | |
| // end of the non intercepted method invocation. | |
| mv.visitLabel(l0); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(generateMethodId(name, desc)); | |
| mv.loadArgArray(); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", ENTRY, "(Ljava/lang/Object;Ljava/lang/String;[Ljava/lang/Object;)V"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| // Do not allow argument modification : just reload arguments. | |
| mv.loadArgs(); | |
| mv.visitMethodInsn(INVOKESPECIAL, m_owner, PREFIX + name, desc); | |
| if (returnType.getSort() != Type.VOID) { | |
| mv.visitVarInsn(returnType.getOpcode(ISTORE), result); | |
| } | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(generateMethodId(name, desc)); | |
| if (returnType.getSort() != Type.VOID) { | |
| mv.visitVarInsn(returnType.getOpcode(ILOAD), result); | |
| mv.box(returnType); | |
| } else { | |
| mv.visitInsn(ACONST_NULL); | |
| } | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", EXIT, "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V"); | |
| mv.visitLabel(l1); | |
| Label l7 = new Label(); | |
| mv.visitJumpInsn(GOTO, l7); | |
| mv.visitLabel(l2); | |
| mv.visitVarInsn(ASTORE, exception); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(generateMethodId(name, desc)); | |
| mv.visitVarInsn(ALOAD, exception); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", ERROR, "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Throwable;)V"); | |
| mv.visitVarInsn(ALOAD, exception); | |
| mv.visitInsn(ATHROW); | |
| mv.visitLabel(l7); | |
| if (returnType.getSort() != Type.VOID) { | |
| mv.visitVarInsn(returnType.getOpcode(ILOAD), result); | |
| } | |
| mv.visitInsn(returnType.getOpcode(IRETURN)); | |
| mv.visitMaxs(0, 0); | |
| mv.visitEnd(); | |
| } | |
| /** | |
| * Generate a method flag name. | |
| * @param name : method name. | |
| * @param desc : method descriptor. | |
| * @return the method flag name. | |
| */ | |
| private String generateMethodFlag(String name, String desc) { | |
| return METHOD_FLAG_PREFIX + generateMethodId(name, desc); | |
| } | |
| /** | |
| * Generate the method id based on the given method name and method descriptor. | |
| * The method Id is unique for this method and serves to create the flag field (so | |
| * must follow field name Java restrictions). | |
| * @param name : method name | |
| * @param desc : method descriptor | |
| * @return method ID | |
| */ | |
| private String generateMethodId(String name, String desc) { | |
| String id = name; | |
| Type[] args = Type.getArgumentTypes(desc); | |
| for (int i = 0; i < args.length; i++) { | |
| String arg = args[i].getClassName(); | |
| if (arg.endsWith("[]")) { | |
| arg = arg.substring(0, arg.length() - 2); | |
| id += "$" + arg.replace('.', '_') + "__"; | |
| } else { | |
| id += "$" + arg.replace('.', '_'); | |
| } | |
| } | |
| if (!m_methods.contains(id)) { | |
| m_methods.add(id); | |
| } | |
| return id; | |
| } | |
| /** | |
| * Add the instance manager field (__im). | |
| */ | |
| private void addIMField() { | |
| FieldVisitor fv = super.visitField(ACC_PRIVATE, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;", null, null); | |
| fv.visitEnd(); | |
| } | |
| /** | |
| * Add the POJO interface to the visited class. | |
| * @param version : class version | |
| * @param access : class access | |
| * @param name : class name | |
| * @param signature : class signature | |
| * @param superName : super class | |
| * @param interfaces : implemented interfaces. | |
| */ | |
| private void addPOJOInterface(int version, int access, String name, String signature, String superName, String[] interfaces) { | |
| // Add the POJO interface to the interface list | |
| // Check that the POJO interface is not already in the list | |
| boolean found = false; | |
| for (int i = 0; i < interfaces.length; i++) { | |
| if (interfaces[i].equals(POJO)) { | |
| found = true; | |
| } | |
| } | |
| String[] itfs; | |
| if (!found) { | |
| itfs = new String[interfaces.length + 1]; | |
| for (int i = 0; i < interfaces.length; i++) { | |
| itfs[i] = interfaces[i]; | |
| } | |
| itfs[interfaces.length] = POJO; | |
| } else { | |
| itfs = interfaces; | |
| } | |
| String str = ""; | |
| for (int i = 0; i < itfs.length; i++) { | |
| str += itfs[i] + " "; | |
| } | |
| cv.visit(version, access, name, signature, superName, itfs); | |
| } | |
| /** | |
| * Visit end. | |
| * Create helper methods. | |
| * @see org.objectweb.asm.ClassAdapter#visitEnd() | |
| */ | |
| public void visitEnd() { | |
| // Create the component manager setter method | |
| createSetInstanceManagerMethod(); | |
| // Add the getComponentInstance | |
| createGetComponentInstanceMethod(); | |
| m_methods.clear(); | |
| cv.visitEnd(); | |
| } | |
| /** | |
| * Create the setter method for the __cm field. | |
| */ | |
| private void createSetInstanceManagerMethod() { | |
| MethodVisitor mv = cv.visitMethod(ACC_PRIVATE, "_setInstanceManager", "(Lorg/apache/felix/ipojo/InstanceManager;)V", null, null); | |
| mv.visitCode(); | |
| // If the given instance manager is null, just returns. | |
| mv.visitVarInsn(ALOAD, 1); | |
| Label l1 = new Label(); | |
| mv.visitJumpInsn(IFNONNULL, l1); | |
| mv.visitInsn(RETURN); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitFieldInsn(PUTFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", "getRegistredFields", "()Ljava/util/Set;"); | |
| mv.visitVarInsn(ASTORE, 2); | |
| mv.visitVarInsn(ALOAD, 2); | |
| Label endif = new Label(); | |
| mv.visitJumpInsn(IFNULL, endif); | |
| Iterator it = m_fields.iterator(); | |
| while (it.hasNext()) { | |
| String field = (String) it.next(); | |
| mv.visitVarInsn(ALOAD, 2); | |
| mv.visitLdcInsn(field); | |
| mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Set", "contains", "(Ljava/lang/Object;)Z"); | |
| Label l3 = new Label(); | |
| mv.visitJumpInsn(IFEQ, l3); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitInsn(ICONST_1); | |
| mv.visitFieldInsn(PUTFIELD, m_owner, FIELD_FLAG_PREFIX + field, "Z"); | |
| mv.visitLabel(l3); | |
| } | |
| mv.visitLabel(endif); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", "getRegistredMethods", "()Ljava/util/Set;"); | |
| mv.visitVarInsn(ASTORE, 2); | |
| mv.visitVarInsn(ALOAD, 2); | |
| Label endif2 = new Label(); | |
| mv.visitJumpInsn(IFNULL, endif2); | |
| for (int i = 0; i < m_methods.size(); i++) { | |
| String methodId = (String) m_methods.get(i); | |
| if (!methodId.equals("<init>")) { | |
| mv.visitVarInsn(ALOAD, 2); | |
| mv.visitLdcInsn(methodId); | |
| mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Set", "contains", "(Ljava/lang/Object;)Z"); | |
| Label l3 = new Label(); | |
| mv.visitJumpInsn(IFEQ, l3); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitInsn(ICONST_1); | |
| mv.visitFieldInsn(PUTFIELD, m_owner, METHOD_FLAG_PREFIX + methodId, "Z"); | |
| mv.visitLabel(l3); | |
| } | |
| } | |
| mv.visitLabel(endif2); | |
| mv.visitInsn(RETURN); | |
| mv.visitMaxs(0, 0); | |
| mv.visitEnd(); | |
| } | |
| /** | |
| * Create the getComponentInstance method. | |
| */ | |
| private void createGetComponentInstanceMethod() { | |
| MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "getComponentInstance", "()Lorg/apache/felix/ipojo/ComponentInstance;", null, null); | |
| mv.visitCode(); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitInsn(ARETURN); | |
| mv.visitMaxs(0, 0); | |
| mv.visitEnd(); | |
| } | |
| /** | |
| * Create a getter method for an array. | |
| * @param name : field name | |
| * @param desc : method description | |
| * @param type : contained type (inside the array) | |
| */ | |
| private void createArraySetter(String name, String desc, Type type) { | |
| MethodVisitor mv = cv.visitMethod(ACC_PRIVATE, "__set" + name, desc, null, null); | |
| mv.visitCode(); | |
| String internalType = desc.substring(1); | |
| internalType = internalType.substring(0, internalType.length() - 2); | |
| Label l1 = new Label(); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| Label l2 = new Label(); | |
| mv.visitJumpInsn(IFNE, l2); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitFieldInsn(PUTFIELD, m_owner, name, internalType); | |
| mv.visitInsn(RETURN); | |
| mv.visitLabel(l2); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET, "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V"); | |
| mv.visitInsn(RETURN); | |
| // End | |
| mv.visitMaxs(0, 0); | |
| mv.visitEnd(); | |
| } | |
| /** | |
| * Create a setter method for an array. | |
| * @param name : field name | |
| * @param desc : method description | |
| * @param type : contained type (inside the array) | |
| */ | |
| private void createArrayGetter(String name, String desc, Type type) { | |
| String methodName = "__get" + name; | |
| MethodVisitor mv = cv.visitMethod(ACC_PRIVATE, methodName, desc, null, null); | |
| mv.visitCode(); | |
| String internalType = desc.substring(2); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| Label l1 = new Label(); | |
| mv.visitJumpInsn(IFNE, l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, name, internalType); | |
| mv.visitInsn(ARETURN); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET, "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;"); | |
| mv.visitTypeInsn(CHECKCAST, internalType); | |
| mv.visitInsn(ARETURN); | |
| // End | |
| mv.visitMaxs(0, 0); | |
| mv.visitEnd(); | |
| } | |
| /** | |
| * Create the getter for a field. | |
| * @param name : field of the dependency | |
| * @param desc : description of the getter method | |
| * @param type : type to return | |
| */ | |
| private void createSimpleGetter(String name, String desc, Type type) { | |
| String methodName = "__get" + name; | |
| MethodVisitor mv = cv.visitMethod(ACC_PRIVATE, methodName, desc, null, null); | |
| mv.visitCode(); | |
| switch (type.getSort()) { | |
| case Type.BOOLEAN: | |
| case Type.CHAR: | |
| case Type.BYTE: | |
| case Type.SHORT: | |
| case Type.INT: | |
| String internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0]; | |
| String boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1]; | |
| String unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2]; | |
| Label l0 = new Label(); | |
| mv.visitLabel(l0); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| Label l1 = new Label(); | |
| mv.visitJumpInsn(IFNE, l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, name, internalName); | |
| mv.visitInsn(IRETURN); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET, "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;"); | |
| mv.visitVarInsn(ASTORE, 1); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitTypeInsn(CHECKCAST, boxingType); | |
| mv.visitVarInsn(ASTORE, 2); | |
| mv.visitVarInsn(ALOAD, 2); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName); | |
| mv.visitInsn(type.getOpcode(IRETURN)); | |
| break; | |
| case Type.LONG: | |
| internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0]; | |
| boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1]; | |
| unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2]; | |
| l0 = new Label(); | |
| mv.visitLabel(l0); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| l1 = new Label(); | |
| mv.visitJumpInsn(IFNE, l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, name, internalName); | |
| mv.visitInsn(LRETURN); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET, "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;"); | |
| mv.visitVarInsn(ASTORE, 1); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitTypeInsn(CHECKCAST, boxingType); | |
| mv.visitVarInsn(ASTORE, 2); | |
| mv.visitVarInsn(ALOAD, 2); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName); | |
| mv.visitInsn(LRETURN); | |
| break; | |
| case Type.DOUBLE: | |
| internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0]; | |
| boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1]; | |
| unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2]; | |
| l0 = new Label(); | |
| mv.visitLabel(l0); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| l1 = new Label(); | |
| mv.visitJumpInsn(IFNE, l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, name, internalName); | |
| mv.visitInsn(DRETURN); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET, "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;"); | |
| mv.visitVarInsn(ASTORE, 1); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitTypeInsn(CHECKCAST, boxingType); | |
| mv.visitVarInsn(ASTORE, 2); | |
| mv.visitVarInsn(ALOAD, 2); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName); | |
| mv.visitInsn(DRETURN); | |
| break; | |
| case Type.FLOAT: | |
| internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0]; | |
| boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1]; | |
| unboxingMethod = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][2]; | |
| l0 = new Label(); | |
| mv.visitLabel(l0); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| l1 = new Label(); | |
| mv.visitJumpInsn(IFNE, l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, name, internalName); | |
| mv.visitInsn(FRETURN); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET, "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;"); | |
| mv.visitVarInsn(ASTORE, 1); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitTypeInsn(CHECKCAST, boxingType); | |
| mv.visitVarInsn(ASTORE, 2); | |
| mv.visitVarInsn(ALOAD, 2); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, boxingType, unboxingMethod, "()" + internalName); | |
| mv.visitInsn(FRETURN); | |
| break; | |
| case Type.OBJECT: | |
| l0 = new Label(); | |
| mv.visitLabel(l0); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| l1 = new Label(); | |
| mv.visitJumpInsn(IFNE, l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, name, "L" + type.getInternalName() + ";"); | |
| mv.visitInsn(ARETURN); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", GET, "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;"); | |
| mv.visitTypeInsn(CHECKCAST, type.getInternalName()); | |
| mv.visitInsn(ARETURN); | |
| break; | |
| default: | |
| ManipulationProperty.getLogger().log(ManipulationProperty.SEVERE, "Manipulation problem in " + m_owner + " : a type is not implemented : " + type); | |
| break; | |
| } | |
| mv.visitMaxs(0, 0); | |
| mv.visitEnd(); | |
| } | |
| /** | |
| * Create the setter method for one property. The name of the method is _set+name of the field | |
| * @param name : name of the field representing a property | |
| * @param desc : description of the setter method | |
| * @param type : type of the property | |
| */ | |
| private void createSimpleSetter(String name, String desc, Type type) { | |
| MethodVisitor mv = cv.visitMethod(ACC_PRIVATE, "__set" + name, desc, null, null); | |
| mv.visitCode(); | |
| switch (type.getSort()) { | |
| case Type.BOOLEAN: | |
| case Type.CHAR: | |
| case Type.BYTE: | |
| case Type.SHORT: | |
| case Type.INT: | |
| case Type.FLOAT: | |
| String internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0]; | |
| String boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1]; | |
| Label l1 = new Label(); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| Label l22 = new Label(); | |
| mv.visitJumpInsn(IFNE, l22); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitVarInsn(type.getOpcode(ILOAD), 1); | |
| mv.visitFieldInsn(PUTFIELD, m_owner, name, internalName); | |
| mv.visitInsn(RETURN); | |
| mv.visitLabel(l22); | |
| mv.visitTypeInsn(NEW, boxingType); | |
| mv.visitInsn(DUP); | |
| mv.visitVarInsn(type.getOpcode(ILOAD), 1); | |
| mv.visitMethodInsn(INVOKESPECIAL, boxingType, "<init>", "(" + internalName + ")V"); | |
| mv.visitVarInsn(ASTORE, 2); | |
| Label l2 = new Label(); | |
| mv.visitLabel(l2); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitVarInsn(ALOAD, 2); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET, "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V"); | |
| Label l3 = new Label(); | |
| mv.visitLabel(l3); | |
| mv.visitInsn(RETURN); | |
| break; | |
| case Type.LONG: | |
| case Type.DOUBLE: | |
| internalName = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][0]; | |
| boxingType = ManipulationProperty.PRIMITIVE_BOXING_INFORMATION[type.getSort()][1]; | |
| l1 = new Label(); | |
| mv.visitLabel(l1); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| Label l23 = new Label(); | |
| mv.visitJumpInsn(IFNE, l23); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitVarInsn(type.getOpcode(ILOAD), 1); | |
| mv.visitFieldInsn(PUTFIELD, m_owner, name, internalName); | |
| mv.visitInsn(RETURN); | |
| mv.visitLabel(l23); | |
| mv.visitTypeInsn(NEW, boxingType); | |
| mv.visitInsn(DUP); | |
| mv.visitVarInsn(type.getOpcode(ILOAD), 1); | |
| mv.visitMethodInsn(INVOKESPECIAL, boxingType, "<init>", "(" + internalName + ")V"); | |
| mv.visitVarInsn(ASTORE, 3); // Double space | |
| l2 = new Label(); | |
| mv.visitLabel(l2); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitVarInsn(ALOAD, 3); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET, "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V"); | |
| l3 = new Label(); | |
| mv.visitLabel(l3); | |
| mv.visitInsn(RETURN); | |
| break; | |
| case Type.OBJECT: | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, FIELD_FLAG_PREFIX + name, "Z"); | |
| Label l24 = new Label(); | |
| mv.visitJumpInsn(IFNE, l24); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitFieldInsn(PUTFIELD, m_owner, name, "L" + type.getInternalName() + ";"); | |
| mv.visitInsn(RETURN); | |
| mv.visitLabel(l24); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitFieldInsn(GETFIELD, m_owner, IM_FIELD, "Lorg/apache/felix/ipojo/InstanceManager;"); | |
| mv.visitVarInsn(ALOAD, 0); | |
| mv.visitLdcInsn(name); | |
| mv.visitVarInsn(ALOAD, 1); | |
| mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/felix/ipojo/InstanceManager", SET, "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V"); | |
| mv.visitInsn(RETURN); | |
| break; | |
| default: | |
| ManipulationProperty.getLogger().log(ManipulationProperty.SEVERE, "Manipulation Error : Cannot create the setter method for the field : " + name + " (" + type + ")"); | |
| break; | |
| } | |
| mv.visitMaxs(0, 0); | |
| mv.visitEnd(); | |
| } | |
| } |