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/*
 * Copyright (C) 2013, 2014 Brett Wooldridge
 *
 * 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 com.zaxxer.hikari.util;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

/**
 * Methods useful for class reflection and class loading.
 *
 * @author Brett Wooldridge
 */
public final class ClassLoaderUtils
{
   public static Set> getAllInterfaces(Class clazz)
   {
      Set> interfaces = new HashSet>();
      for (Class intf : Arrays.asList(clazz.getInterfaces())) {
         if (intf.getInterfaces().length > 0) {
            interfaces.addAll(getAllInterfaces(intf));
         }
         interfaces.add(intf);
      }
      if (clazz.getSuperclass() != null) {
         interfaces.addAll(getAllInterfaces(clazz.getSuperclass()));
      }

      if (clazz.isInterface()) {
         interfaces.add(clazz);
      }

      return interfaces;
   }
}