package act.util;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* 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.
* #L%
*/
import act.Act;
import act.asm.ClassVisitor;
import act.asm.Opcodes;
import act.plugin.Plugin;
import org.osgl.$;
import org.osgl.util.E;
/**
* Base class for all bytecode enhancer that using ASM lib
*/
public abstract class AsmByteCodeEnhancer<T extends AsmByteCodeEnhancer> extends PredictableByteCodeVisitor
implements Opcodes, Plugin, Cloneable {
private $.Predicate<String> targetClassPredicate;
protected abstract Class<T> subClass();
protected AsmByteCodeEnhancer($.Predicate<String> targetClassPredicate) {
this.targetClassPredicate = targetClassPredicate;
}
protected AsmByteCodeEnhancer($.Predicate<String> targetClassPredicate, ClassVisitor cv) {
super(cv);
this.targetClassPredicate = targetClassPredicate;
}
public void predicate($.Predicate<String> predicate) {
targetClassPredicate = predicate;
}
@Override
public boolean isTargetClass(String className) {
return (null == targetClassPredicate) || targetClassPredicate.test(className);
}
@Override
public void register() {
Act.enhancerManager().register(this);
}
public T clone() {
try {
return (T) super.clone();
} catch (CloneNotSupportedException e) {
throw E.unexpected(e);
}
}
}