/*! \file common.hpp
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\brief Support common types - always included automatically
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\ingroup OtherTypes */
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/*
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Copyright (c) 2014, Randolph Voorhies, Shane Grant
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the copyright holder nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CEREAL_TYPES_COMMON_HPP_
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#define CEREAL_TYPES_COMMON_HPP_
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#include "../cereal.hpp"
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namespace cereal
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{
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namespace common_detail
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{
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//! Serialization for arrays if BinaryData is supported and we are arithmetic
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/*! @internal */
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template <class Archive, class T> inline
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void serializeArray( Archive & ar, T & array, std::true_type /* binary_supported */ )
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{
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ar( binary_data( array, sizeof(array) ) );
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}
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//! Serialization for arrays if BinaryData is not supported or we are not arithmetic
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/*! @internal */
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template <class Archive, class T> inline
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void serializeArray( Archive & ar, T & array, std::false_type /* binary_supported */ )
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{
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for( auto & i : array )
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ar( i );
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}
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namespace
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{
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//! Gets the underlying type of an enum
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/*! @internal */
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template <class T, bool IsEnum>
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struct enum_underlying_type : std::false_type {};
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//! Gets the underlying type of an enum
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/*! Specialization for when we actually have an enum
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@internal */
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template <class T>
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struct enum_underlying_type<T, true> { using type = typename std::underlying_type<T>::type; };
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} // anon namespace
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//! Checks if a type is an enum
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/*! This is needed over simply calling std::is_enum because the type
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traits checking at compile time will attempt to call something like
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load_minimal with a special NoConvertRef struct that wraps up the true type.
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This will strip away any of that and also expose the true underlying type.
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@internal */
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template <class T>
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class is_enum
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{
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private:
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using DecayedT = typename std::decay<T>::type;
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using StrippedT = typename ::cereal::traits::strip_minimal<DecayedT>::type;
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public:
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static const bool value = std::is_enum<StrippedT>::value;
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using type = StrippedT;
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using base_type = typename enum_underlying_type<StrippedT, value>::type;
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};
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}
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//! Saving for enum types
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template <class Archive, class T> inline
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typename std::enable_if<common_detail::is_enum<T>::value,
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typename common_detail::is_enum<T>::base_type>::type
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CEREAL_SAVE_MINIMAL_FUNCTION_NAME( Archive const &, T const & t )
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{
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return static_cast<typename common_detail::is_enum<T>::base_type>(t);
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}
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//! Loading for enum types
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template <class Archive, class T> inline
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typename std::enable_if<common_detail::is_enum<T>::value, void>::type
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CEREAL_LOAD_MINIMAL_FUNCTION_NAME( Archive const &, T && t,
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typename common_detail::is_enum<T>::base_type const & value )
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{
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t = reinterpret_cast<typename common_detail::is_enum<T>::type const &>( value );
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}
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//! Serialization for raw pointers
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/*! This exists only to throw a static_assert to let users know we don't support raw pointers. */
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template <class Archive, class T> inline
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void CEREAL_SERIALIZE_FUNCTION_NAME( Archive &, T * & )
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{
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static_assert(cereal::traits::detail::delay_static_assert<T>::value,
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"Cereal does not support serializing raw pointers - please use a smart pointer");
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}
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//! Serialization for C style arrays
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template <class Archive, class T> inline
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typename std::enable_if<std::is_array<T>::value, void>::type
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CEREAL_SERIALIZE_FUNCTION_NAME(Archive & ar, T & array)
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{
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common_detail::serializeArray( ar, array,
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std::integral_constant<bool, traits::is_output_serializable<BinaryData<T>, Archive>::value &&
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std::is_arithmetic<typename std::remove_all_extents<T>::type>::value>() );
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}
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} // namespace cereal
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#endif // CEREAL_TYPES_COMMON_HPP_
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