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blockchain/contrib/epee/include/serialization/keyvalue_serialization_boost_variant.h
2018-12-27 18:50:45 +03:00

67 lines
3.1 KiB
C++

// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// 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 the Andrey N. Sabelnikov 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 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 <boost/variant.hpp>
namespace epee
{
namespace serialization
{
template<class t_storage>
struct serialize_variant_visitor : public boost::static_visitor<bool>
{
serialize_variant_visitor(t_storage& rstg, typename t_storage::hsection hsection, const char* pn)
:stg(rstg), hparent_section(hsection), pname(pn)
{}
t_storage& stg;
typename t_storage::hsection hparent_section;
const char* pname;
template<class t_type>
bool operator()(const t_type& v) const
{
return kv_serialization_overloads_impl_is_base_serializable_types<boost::mpl::contains<base_serializable_types<t_storage>, typename std::remove_const<t_type>::type>::value>::kv_serialize(v, stg, hparent_section, pname);
}
};
template<class t_storage, typename t_type, typename... rest>
bool kv_serialize(const boost::variant<t_type, rest...>& d, t_storage& stg, typename t_storage::hsection hparent_section, const char* pname)
{
serialize_variant_visitor<t_storage> sv(stg, hparent_section, pname);
return boost::apply_visitor(sv, d);
}
//-------------------------------------------------------------------------------------------------------------------
template<class t_storage, typename t_type, typename... rest>
bool kv_unserialize(boost::variant<t_type, rest... > &d, t_storage& stg, typename t_storage::hsection hparent_section, const char* pname)
{
LOG_ERROR("kv_unserialize on boost::variant call not allowed");
return false;
}
}
}