| /* |
| * Copyright 2003,2004 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.mockito.cglib.beans; |
| |
| import java.beans.PropertyDescriptor; |
| import java.lang.reflect.Method; |
| |
| import org.mockito.asm.ClassVisitor; |
| import org.mockito.asm.Type; |
| import org.mockito.cglib.core.*; |
| |
| /** |
| * @author Chris Nokleberg |
| */ |
| public class ImmutableBean |
| { |
| private static final Type ILLEGAL_STATE_EXCEPTION = |
| TypeUtils.parseType("IllegalStateException"); |
| private static final Signature CSTRUCT_OBJECT = |
| TypeUtils.parseConstructor("Object"); |
| private static final Class[] OBJECT_CLASSES = { Object.class }; |
| private static final String FIELD_NAME = "CGLIB$RWBean"; |
| |
| private ImmutableBean() { |
| } |
| |
| public static Object create(Object bean) { |
| Generator gen = new Generator(); |
| gen.setBean(bean); |
| return gen.create(); |
| } |
| |
| public static class Generator extends AbstractClassGenerator { |
| private static final Source SOURCE = new Source(ImmutableBean.class.getName()); |
| private Object bean; |
| private Class target; |
| |
| public Generator() { |
| super(SOURCE); |
| } |
| |
| public void setBean(Object bean) { |
| this.bean = bean; |
| target = bean.getClass(); |
| } |
| |
| protected ClassLoader getDefaultClassLoader() { |
| return target.getClassLoader(); |
| } |
| |
| public Object create() { |
| String name = target.getName(); |
| setNamePrefix(name); |
| return super.create(name); |
| } |
| |
| public void generateClass(ClassVisitor v) { |
| Type targetType = Type.getType(target); |
| ClassEmitter ce = new ClassEmitter(v); |
| ce.begin_class(Constants.V1_2, |
| Constants.ACC_PUBLIC, |
| getClassName(), |
| targetType, |
| null, |
| Constants.SOURCE_FILE); |
| |
| ce.declare_field(Constants.ACC_FINAL | Constants.ACC_PRIVATE, FIELD_NAME, targetType, null); |
| |
| CodeEmitter e = ce.begin_method(Constants.ACC_PUBLIC, CSTRUCT_OBJECT, null); |
| e.load_this(); |
| e.super_invoke_constructor(); |
| e.load_this(); |
| e.load_arg(0); |
| e.checkcast(targetType); |
| e.putfield(FIELD_NAME); |
| e.return_value(); |
| e.end_method(); |
| |
| PropertyDescriptor[] descriptors = ReflectUtils.getBeanProperties(target); |
| Method[] getters = ReflectUtils.getPropertyMethods(descriptors, true, false); |
| Method[] setters = ReflectUtils.getPropertyMethods(descriptors, false, true); |
| |
| for (int i = 0; i < getters.length; i++) { |
| MethodInfo getter = ReflectUtils.getMethodInfo(getters[i]); |
| e = EmitUtils.begin_method(ce, getter, Constants.ACC_PUBLIC); |
| e.load_this(); |
| e.getfield(FIELD_NAME); |
| e.invoke(getter); |
| e.return_value(); |
| e.end_method(); |
| } |
| |
| for (int i = 0; i < setters.length; i++) { |
| MethodInfo setter = ReflectUtils.getMethodInfo(setters[i]); |
| e = EmitUtils.begin_method(ce, setter, Constants.ACC_PUBLIC); |
| e.throw_exception(ILLEGAL_STATE_EXCEPTION, "Bean is immutable"); |
| e.end_method(); |
| } |
| |
| ce.end_class(); |
| } |
| |
| protected Object firstInstance(Class type) { |
| return ReflectUtils.newInstance(type, OBJECT_CLASSES, new Object[]{ bean }); |
| } |
| |
| // TODO: optimize |
| protected Object nextInstance(Object instance) { |
| return firstInstance(instance.getClass()); |
| } |
| } |
| } |