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/*
 * Copyright 2012 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 leap.lang.reflect;

import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.Parameter;

import leap.lang.Classes;
import leap.lang.Strings;

public class ReflectMethod extends ReflectMember{
	
	private final ReflectAccessor accessor;
	private final int             accessorIndex;
	private final Method          reflectedMethod;
	private ReflectParameter[]    parameters;
	private boolean               setter;
	private boolean               getter;
	
	protected ReflectMethod(ReflectClass reflectClass,Method method) {
		super(reflectClass,method);
		
		this.accessor		 = reflectClass.getAccessor();
		this.reflectedMethod = method;
		this.accessorIndex   = accessor == null ? -1 : accessor.getMethodIndex(method);
		
		this.initialize();
	}
	
	public String getName() {
	    return reflectedMethod.getName();
    }

	public Method getReflectedMethod(){
		return this.reflectedMethod;
	}
	
	public ReflectParameter[] getParameters(){
		return parameters;
	}
	
	public Class getReturnType(){
		return reflectedMethod.getReturnType();
	}
	
	public boolean isStatic(){
		return Modifier.isStatic(reflectedMethod.getModifiers());
	}
	
	public boolean isSynthetic(){
		return reflectedMethod.isSynthetic();
	}
	
	public boolean isGetterMethod(){
		return getter;
	}
	
	public boolean isSetterMethod(){
		return setter;
	}
	
	public boolean isAnnotationPresent(Class annotationClsss){
		return reflectedMethod.isAnnotationPresent(annotationClsss);
	}
	
	public  T getAnnotation(Class annotationClass){
		return reflectedMethod.getAnnotation(annotationClass);
	}
	
	public Annotation[] getAnnotations(){
		return reflectedMethod.getAnnotations();
	}
	
	public boolean hasReturnValue(){
		return !Classes.isVoid(reflectedMethod.getReturnType());
	}
	
	public Object invoke(Object instance,Object... args) {
		try {
			if(parameters.length != args.length){
				throw new IllegalArgumentException("argument's length must be " + parameters.length);
			}
			
			for(int i=0;i 0){
			String[] names = Reflection.getParameterNames(reflectedMethod);

			if(null == names){
				names = createUnknowParameterNames(parameters.length);
			}

			for(int i=0;i