001/*
002 * Trident - A Multithreaded Server Alternative
003 * Copyright 2014 The TridentSDK Team
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *    http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package net.tridentsdk.reflect;
019
020import com.esotericsoftware.reflectasm.MethodAccess;
021import net.tridentsdk.docs.InternalUseOnly;
022
023/**
024 * Wrapper for the provided ReflectASM method library
025 *
026 * @author The TridentSDK Team
027 * @since 0.3-alpha-DP
028 */
029public class FastMethod {
030    private final MethodAccess access;
031    private final String name;
032    private final Object instance;
033
034    @InternalUseOnly
035    public FastMethod(Object instance, MethodAccess access, String name) {
036        this.access = access;
037        this.name = name;
038        this.instance = instance;
039    }
040
041    /**
042     * Invokes the method with parameters
043     *
044     * @param instance the instance of the class to use, to {@code null for static methods}
045     * @param args     the parameter values for the method
046     * @return the return type of the method, or {@code null} for {@code void} methods
047     */
048    public Object invoke(Object instance, Object... args) {
049        return this.access.invoke(instance, this.name, args);
050    }
051
052    /**
053     * Invokes the method without parameters (no-arg)
054     *
055     * @param instance the instance of the class to use, to {@code null for static methods}
056     * @return the return type of the method, or {@code null} for {@code void} methods
057     */
058    public Object invoke(Object instance) {
059        return this.access.invoke(instance, this.name);
060    }
061
062    /**
063     * Gets the object instance used by this class
064     *
065     * @return the instance for method invocation
066     */
067    public Object instance() {
068        return instance;
069    }
070}