1/*
2 * Copyright 2003,2004 The Apache Software Foundation
3 *
4 *  Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 *  Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package org.mockito.cglib.transform.impl;
17
18import java.lang.reflect.Method;
19
20import org.mockito.asm.Type;
21import org.mockito.cglib.core.*;
22import org.mockito.cglib.transform.*;
23
24/**
25 * @author Juozas Baliuka, Chris Nokleberg
26 */
27public class AddStaticInitTransformer extends ClassEmitterTransformer {
28    private MethodInfo info;
29
30    public AddStaticInitTransformer(Method classInit) {
31        info = ReflectUtils.getMethodInfo(classInit);
32        if (!TypeUtils.isStatic(info.getModifiers())) {
33            throw new IllegalArgumentException(classInit + " is not static");
34        }
35        Type[] types = info.getSignature().getArgumentTypes();
36        if (types.length != 1 ||
37            !types[0].equals(Constants.TYPE_CLASS) ||
38            !info.getSignature().getReturnType().equals(Type.VOID_TYPE)) {
39            throw new IllegalArgumentException(classInit + " illegal signature");
40        }
41    }
42
43    protected void init() {
44        if (!TypeUtils.isInterface(getAccess())) {
45            CodeEmitter e = getStaticHook();
46            EmitUtils.load_class_this(e);
47            e.invoke(info);
48        }
49    }
50}
51