content: /*
   *  ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
   *  Copyright (C) 2012 Kristian S. Stangeland
   *
   *  This program is free software; you can redistribute it and/or modify it under the terms of the 
   *  GNU General Public License as published by the Free Software Foundation; either version 2 of 
   *  the License, or (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
   *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
   *  See the GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License along with this program; 
   *  if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 
   *  02111-1307 USA
   */
  
  package com.comphenix.protocol.reflect.instances;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Map;
  import java.util.Queue;
  import java.util.Set;
  import java.util.SortedMap;
  import java.util.SortedSet;
  import java.util.TreeMap;
  import java.util.TreeSet;
  
  import javax.annotation.Nullable;
  
  /**
   * Provides simple constructors for collection interfaces.
   * @author Kristian
   */
  public class CollectionGenerator implements InstanceProvider {
  
  	/**
  	 * Shared instance of this generator.
  	 */
  	public static final CollectionGenerator INSTANCE = new CollectionGenerator();
  	
  	@Override
  	public Object create(@Nullable Class<?> type) {
  		// Standard collection types
  		if (type != null && type.isInterface()) {
  			if (type.equals(Collection.class) || type.equals(List.class)) return new ArrayList<>();
  			else if (type.equals(Set.class)) return new HashSet<>();
  			else if (type.equals(Map.class)) return new HashMap<>();
  			else if (type.equals(SortedSet.class)) return new TreeSet<>();
  			else if (type.equals(SortedMap.class)) return new TreeMap<>();
  			else if (type.equals(Queue.class)) return new LinkedList<>();
  		}
  		
  		// Cannot provide an instance
  		return null;
  	}
  }
  