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PacketBuffer/include/PacketBuffer/Serializer/Std/Experimental/Optional.h
2017-05-30 14:48:02 -03:00

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2.5 KiB
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/*
* Copyright (c) 2017, Rogiel Sulzbach
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of Rogiel Sulzbach nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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.
*/
#ifndef PACKETBUFFER_SERIALIZER_STD_EXPERIMENTAL_OPTIONAL_H
#define PACKETBUFFER_SERIALIZER_STD_EXPERIMENTAL_OPTIONAL_H
#include "PacketBuffer/ObjectSerializer.h"
#if __has_include(<experimental/optional>)
#include <experimental/optional>
namespace PacketBuffer {
/**
* A ObjectSerializer for std::optional of type <tt>T</tt>.
*
* @tparam T the optional type
*/
template<typename T>
class ObjectSerializer<std::experimental::optional<T>> {
public:
template<typename Packer>
static inline void pack(Packer& packer, const std::experimental::optional<T>& optional) {
if(optional) {
packer(true);
packer(*optional);
} else {
packer(false);
}
}
template<typename Unpacker>
static inline void unpack(Unpacker& unpacker, std::experimental::optional<T>& optional) {
bool hasValue;
unpacker(hasValue);
if(hasValue) {
unpacker(*optional);
}
}
};
}
#endif
#endif //PACKETBUFFER_SERIALIZER_STD_EXPERIMENTAL_OPTIONAL_H