org.springframework.cglib.proxy.InvocationHandlerGenerator Maven / Gradle / Ivy
/*
* 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
*
* https://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.springframework.cglib.proxy;
import org.springframework.cglib.core.*;
import java.util.*;
import org.springframework.asm.Type;
@SuppressWarnings({"rawtypes", "unchecked"})
class InvocationHandlerGenerator
implements CallbackGenerator
{
public static final InvocationHandlerGenerator INSTANCE = new InvocationHandlerGenerator();
private static final Type INVOCATION_HANDLER =
TypeUtils.parseType("org.springframework.cglib.proxy.InvocationHandler");
private static final Type UNDECLARED_THROWABLE_EXCEPTION =
TypeUtils.parseType("org.springframework.cglib.proxy.UndeclaredThrowableException");
private static final Type METHOD =
TypeUtils.parseType("java.lang.reflect.Method");
private static final Signature INVOKE =
TypeUtils.parseSignature("Object invoke(Object, java.lang.reflect.Method, Object[])");
public void generate(ClassEmitter ce, Context context, List methods) {
for (Iterator it = methods.iterator(); it.hasNext();) {
MethodInfo method = (MethodInfo)it.next();
Signature impl = context.getImplSignature(method);
ce.declare_field(Constants.PRIVATE_FINAL_STATIC, impl.getName(), METHOD, null);
CodeEmitter e = context.beginMethod(ce, method);
Block handler = e.begin_block();
context.emitCallback(e, context.getIndex(method));
e.load_this();
e.getfield(impl.getName());
e.create_arg_array();
e.invoke_interface(INVOCATION_HANDLER, INVOKE);
e.unbox(method.getSignature().getReturnType());
e.return_value();
handler.end();
EmitUtils.wrap_undeclared_throwable(e, handler, method.getExceptionTypes(), UNDECLARED_THROWABLE_EXCEPTION);
e.end_method();
}
}
public void generateStatic(CodeEmitter e, Context context, List methods) {
for (Iterator it = methods.iterator(); it.hasNext();) {
MethodInfo method = (MethodInfo)it.next();
EmitUtils.load_method(e, method);
e.putfield(context.getImplSignature(method).getName());
}
}
}