/*
* Copyright 2010 the original author or authors.
*
* 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.spockframework.runtime.extension.builtin;
import groovy.lang.ExpandoMetaClass;
import groovy.lang.GroovySystem;
import groovy.lang.MetaClass;
import groovy.lang.MetaClassRegistry;
import org.spockframework.runtime.extension.IMethodInterceptor;
import org.spockframework.runtime.extension.IMethodInvocation;
import java.util.*;
/**
* @author Luke Daley
* @author Peter Niederwieser
*/
public class ConfineMetaClassChangesInterceptor implements IMethodInterceptor {
private final Collection<Class<?>> classes;
private final List<MetaClass> originalMetaClasses = new ArrayList<MetaClass>();
public ConfineMetaClassChangesInterceptor(Collection<Class<?>> classes) {
this.classes = classes;
}
public void intercept(IMethodInvocation invocation) throws Throwable {
MetaClassRegistry registry = GroovySystem.getMetaClassRegistry();
for (Class<?> clazz : classes) {
originalMetaClasses.add(registry.getMetaClass(clazz));
MetaClass temporaryMetaClass = new ExpandoMetaClass(clazz, true, true);
temporaryMetaClass.initialize();
registry.setMetaClass(clazz, temporaryMetaClass);
}
try {
invocation.proceed();
} finally {
for (MetaClass original : originalMetaClasses)
registry.setMetaClass(original.getTheClass(), original);
}
}
}