net.sf.cglib.transform.impl.AddStaticInitTransformer 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
*
* 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 net.sf.cglib.transform.impl;
import java.lang.reflect.Method;
import net.sf.cglib.core.*;
import net.sf.cglib.transform.*;
import org.objectweb.asm.Type;
/**
* @author Juozas Baliuka, Chris Nokleberg
*/
public class AddStaticInitTransformer extends ClassEmitterTransformer {
private MethodInfo info;
public AddStaticInitTransformer(Method classInit) {
info = ReflectUtils.getMethodInfo(classInit);
if (!TypeUtils.isStatic(info.getModifiers())) {
throw new IllegalArgumentException(classInit + " is not static");
}
Type[] types = info.getSignature().getArgumentTypes();
if (types.length != 1 ||
!types[0].equals(Constants.TYPE_CLASS) ||
!info.getSignature().getReturnType().equals(Type.VOID_TYPE)) {
throw new IllegalArgumentException(classInit + " illegal signature");
}
}
protected void init() {
if (!TypeUtils.isInterface(getAccess())) {
CodeEmitter e = getStaticHook();
EmitUtils.load_class_this(e);
e.invoke(info);
}
}
}