content: /*
   * MIT License
   *
   * Copyright (c) 2018 Alibaba Group
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  package com.tmall.wireless.tangram3.eventbus;
  
  import android.support.annotation.NonNull;
  import android.text.TextUtils;
  
  import java.lang.reflect.Method;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  /**
   * Created by longerian on 16/4/29.
   *
   * Helper to find a callback method of subscriber.
   */
  public class ReflectedActionFinder {
  
      private static final Map<Object, Map<String, Method>> methodCache = new ConcurrentHashMap<>();
  
      public static void clear() {
          methodCache.clear();
      }
  
      public static Method findMethodByName(@NonNull String name, @NonNull Object subscriber) {
          if (TextUtils.isEmpty(name)) {
              name = "execute";
          }
          Map<String, Method> methodPair = methodCache.get(subscriber);
          if (methodPair == null) {
              methodPair = new HashMap<>();
              methodCache.put(subscriber, methodPair);
          }
          Method method = methodPair.get(name);
          if (method == null) {
              Class<?> subscriberClass = subscriber.getClass();
              try {
                  Class<?> clazz = subscriberClass;
                  while (clazz != null && !clazz.equals(Object.class)) {
                      method = subscriberClass.getMethod(name, Event.class);
                      if (method != null) {
                          methodPair.put(name, method);
                          break;
                      }
                  }
              } catch (NoSuchMethodException e) {
                  e.printStackTrace();
              }
          }
          return method;
      }
  
  }
  