text: /*
   * Copyright (c) 2017, Allogica
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without modification,
   * are permitted provided that the following conditions are met:
   *
   *     * Redistributions of source code must retain the above copyright notice,
   *       this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above copyright notice,
   *       this list of conditions and the following disclaimer in the documentation
   *       and/or other materials provided with the distribution.
   *     * Neither the name of Allogen nor the names of its contributors
   *       may be used to endorse or promote products derived from this software
   *       without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #pragma once
  
  #include "Allogen/JNI/Converter.hpp"
  
  #if __has_include(<optional>)&& !defined(__APPLE__)
  #include <optional>
  namespace Allogen {
  	namespace JNI {
  		/**
  		 * A converter specialization for C++ integral types
  		 *
  		 * @tparam IntegralType the integral type to be converted
  		 */
  		template<typename ContainedType>
  		struct Converter<std::optional<ContainedType>> {
  			/**
  			 * The C++ type this converter is operating on
  			 */
  			using Type = std::optional<ContainedType>;
  
  			/**
  			 * The JNI type this converter supports
  			 */
  			using JavaType = typename Converter<ContainedType>::JavaType;
  
  			/**
  			 * Converts a C++ integer into a Java integer
  			 *
  			 * @param env the JNI environment
  			 * @param i the C++ integer
  			 *
  			 * @return the Java integer
  			 */
  			static JavaType toJava(JNIEnv* env, Type object) {
  				if(object) {
  					return Converter<ContainedType>::toJava(env, *object);
  				}
  				return {};
  			}
  
  			/**
  			 * Converts a Java integer into a C++ integer
  			 *
  			 * @param env the JNI environment
  			 * @param i the Java integer
  			 *
  			 * @return the C++ integer
  			 */
  			static Type fromJava(JNIEnv* env, JavaType object) {
  				if(object) {
  					return Converter<ContainedType>::fromJava(env, object);
  				}
  				return {};
  			}
  		};
  	}
  }
  #elif __has_include(<experimental/optional>)
  #include <experimental/optional>
  namespace std { using std::experimental::optional; }
  namespace Allogen {
  	namespace JNI {
  		/**
  		 * A converter specialization for C++ integral types
  		 *
  		 * @tparam IntegralType the integral type to be converted
  		 */
  		template<typename ContainedType>
  		struct Converter<std::experimental::optional<ContainedType>> {
  			/**
  			 * The C++ type this converter is operating on
  			 */
  			using Type = std::experimental::optional<ContainedType>;
  
  			/**
  			 * The JNI type this converter supports
  			 */
  			using JavaType = typename Converter<ContainedType>::JavaType;
  
  			/**
  			 * Converts a C++ integer into a Java integer
  			 *
  			 * @param env the JNI environment
  			 * @param i the C++ integer
  			 *
  			 * @return the Java integer
  			 */
  			static JavaType toJava(JNIEnv* env, Type object) {
  				if(object) {
  					return Converter<ContainedType>::toJava(env, *object);
  				}
  				return {};
  			}
  
  			/**
  			 * Converts a Java integer into a C++ integer
  			 *
  			 * @param env the JNI environment
  			 * @param i the Java integer
  			 *
  			 * @return the C++ integer
  			 */
  			static Type fromJava(JNIEnv* env, JavaType object) {
  				if(object) {
  					return Converter<ContainedType>::fromJava(env, object);
  				}
  				return {};
  			}
  		};
  	}
  }
  #endif