| /* |
| * Copyright 2003-2007 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.codehaus.groovy.runtime.metaclass; |
| |
| import groovy.lang.Closure; |
| import groovy.lang.ClosureInvokingMethod; |
| import groovy.lang.MetaMethod; |
| import org.codehaus.groovy.reflection.CachedClass; |
| import org.codehaus.groovy.reflection.ParameterTypes; |
| import org.codehaus.groovy.reflection.ReflectionCache; |
| |
| import java.lang.reflect.Modifier; |
| |
| /** |
| * |
| * A MetaMethod that accepts a closure in the constructor which is invoked when the MetaMethod is called. |
| * The delegate of the closure is set to the instance that the MetaMethod is invoked on when called. |
| * |
| * @author Graeme Rocher |
| * @since 1.1 |
| */ |
| public class ClosureMetaMethod extends MetaMethod implements ClosureInvokingMethod { |
| |
| private final Closure callable; |
| private final String name; |
| private final ParameterTypes pt; |
| private final CachedClass declaringClass; |
| |
| public ClosureMetaMethod(String name, Closure c) { |
| this(name, c.getOwner().getClass(), c); |
| } |
| |
| public ClosureMetaMethod(String name, Class declaringClass,Closure c) { |
| this.name = name; |
| callable = c; |
| pt = new ParameterTypes(c.getParameterTypes()); |
| this.declaringClass = ReflectionCache.getCachedClass(declaringClass); |
| } |
| |
| |
| public int getModifiers() { |
| return Modifier.PUBLIC; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public Class getReturnType() { |
| return Object.class; |
| } |
| |
| public CachedClass getDeclaringClass() { |
| return declaringClass; |
| } |
| |
| public ParameterTypes getParamTypes() { |
| return pt; |
| } |
| |
| public Object invoke(final Object object, final Object[] arguments) { |
| Closure cloned = (Closure) callable.clone(); |
| cloned.setDelegate(object); |
| |
| return cloned.call(arguments); |
| } |
| |
| /** |
| * Retrieves the closure that is invoked by this MetaMethod |
| * |
| * @return The closure |
| */ |
| public Closure getClosure() { |
| return callable; |
| } |
| } |