| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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; |
| |
| import groovy.lang.Closure; |
| import groovy.lang.MetaMethod; |
| |
| import java.util.List; |
| |
| |
| /** |
| * Represents a method on an object using a closure which can be invoked |
| * at any time |
| * |
| * @author <a href="mailto:james@coredevelopers.net">James Strachan</a> |
| */ |
| public class MethodClosure extends Closure { |
| |
| public static boolean ALLOW_RESOLVE = false; |
| |
| private static final Class[] EMPTY_CLASS_ARRAY = new Class[0]; |
| private final String method; |
| |
| public MethodClosure(Object owner, String method) { |
| super(owner); |
| this.method = method; |
| |
| final Class clazz = owner.getClass()==Class.class?(Class) owner:owner.getClass(); |
| |
| maximumNumberOfParameters = 0; |
| parameterTypes = EMPTY_CLASS_ARRAY; |
| |
| List<MetaMethod> methods = InvokerHelper.getMetaClass(clazz).respondsTo(owner, method); |
| |
| for(MetaMethod m : methods) { |
| if (m.getParameterTypes().length > maximumNumberOfParameters) { |
| Class[] pt = m.getNativeParameterTypes(); |
| maximumNumberOfParameters = pt.length; |
| parameterTypes = pt; |
| } |
| } |
| } |
| |
| public String getMethod() { |
| return method; |
| } |
| |
| protected Object doCall(Object arguments) { |
| return InvokerHelper.invokeMethod(getOwner(), method, arguments); |
| } |
| |
| private Object readResolve() { |
| if (ALLOW_RESOLVE) { |
| return this; |
| } |
| throw new UnsupportedOperationException(); |
| } |
| |
| public Object getProperty(String property) { |
| if ("method".equals(property)) { |
| return getMethod(); |
| } else return super.getProperty(property); |
| } |
| } |