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.lang.reflect.Array;
  import java.util.Optional;
  
  import com.google.common.base.Defaults;
  import com.google.common.primitives.Primitives;
  import javax.annotation.Nullable;
  
  /**
   * Provides constructors for primitive java types and wrappers.
   *
   * @author Kristian
   */
  public class PrimitiveGenerator implements InstanceProvider {
  
  	/**
  	 * Default value for Strings.
  	 */
  	@Deprecated
  	public static final String STRING_DEFAULT = "";
  
  	/**
  	 * Shared instance of this generator.
  	 */
  	public static PrimitiveGenerator INSTANCE = new PrimitiveGenerator();
  
  	// Our default string value
  	private final String stringDefault;
  
  	public PrimitiveGenerator() {
  		this.stringDefault = "";
  	}
  
  	@Deprecated
  	public PrimitiveGenerator(String stringDefault) {
  		this.stringDefault = stringDefault;
  	}
  
  	/**
  	 * Retrieve the string default.
  	 *
  	 * @return Default instance of a string.
  	 */
  	@Deprecated
  	public String getStringDefault() {
  		return stringDefault;
  	}
  
  	@Override
  	public Object create(@Nullable Class<?> type) {
  		if (type == null) {
  			return null;
  		} else if (type.isPrimitive()) {
  			return Defaults.defaultValue(type);
  		} else if (Primitives.isWrapperType(type)) {
  			return Defaults.defaultValue(Primitives.unwrap(type));
  		} else if (type.isArray()) {
  			Class<?> arrayType = type.getComponentType();
  			return Array.newInstance(arrayType, 0);
  		} else if (type.isEnum()) {
  			Object[] values = type.getEnumConstants();
  			if (values != null && values.length > 0) {
  				return values[0];
  			}
  		} else if (type.equals(String.class)) {
  			return this.stringDefault;
  		} else if (type.equals(Optional.class)) {
  			return Optional.empty();
  		}
  
  		// Cannot handle this type
  		return null;
  	}
  }
  