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//
// MessagePack for C++ static resolution routine
//
// Copyright (C) 2015-2016 KONDO Takatoshi
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef MSGPACK_V1_TYPE_BOOST_FUSION_HPP
#define MSGPACK_V1_TYPE_BOOST_FUSION_HPP
#include "msgpack/versioning.hpp"
#include "msgpack/adaptor/adaptor_base.hpp"
#include "msgpack/adaptor/check_container_size.hpp"
#include "msgpack/meta.hpp"
#include "msgpack/adaptor/pair.hpp"
#if !defined (MSGPACK_USE_CPP03)
#include "msgpack/adaptor/cpp11/tuple.hpp"
#endif // #if !defined (MSGPACK_USE_CPP03)
#include <boost/fusion/support/is_sequence.hpp>
#include <boost/fusion/sequence/intrinsic/size.hpp>
#include <boost/fusion/algorithm/iteration/for_each.hpp>
#include <boost/fusion/sequence/intrinsic/at.hpp>
#include <boost/fusion/include/mpl.hpp>
#include <boost/mpl/size.hpp>
namespace msgpack {
/// @cond
MSGPACK_API_VERSION_NAMESPACE(v1) {
/// @endcond
namespace adaptor {
namespace detail {
template <typename T>
struct is_std_pair {
static bool const value = false;
};
template <typename T, typename U>
struct is_std_pair<std::pair<T, U> > {
static bool const value = true;
};
#if !defined(MSGPACK_USE_CPP03)
template <typename T>
struct is_std_tuple {
static bool const value = false;
};
template <typename... Args>
struct is_std_tuple<std::tuple<Args...>> {
static bool const value = true;
};
#endif // !defined(MSGPACK_USE_CPP03)
template <typename T>
struct is_seq_no_pair_no_tuple {
static bool const value =
boost::fusion::traits::is_sequence<T>::value
&&
!is_std_pair<T>::value
#if !defined (MSGPACK_USE_CPP03)
&&
!is_std_tuple<T>::value
#endif // !defined (MSGPACK_USE_CPP03)
;
};
} // namespace detail
#if !defined (MSGPACK_USE_CPP03)
template <typename T>
struct as<
T,
typename msgpack::enable_if<
detail::is_seq_no_pair_no_tuple<T>::value &&
boost::mpl::fold<
T,
boost::mpl::bool_<true>,
boost::mpl::if_ <
boost::mpl::or_<
boost::mpl::_1,
msgpack::has_as<boost::mpl::_2>
>,
boost::mpl::bool_<true>,
boost::mpl::bool_<false>
>
>::type::value
>::type
> {
T operator()(msgpack::object const& o) const {
if (o.type != msgpack::type::ARRAY) { throw msgpack::type_error(); }
if (o.via.array.size != checked_get_container_size(boost::mpl::size<T>::value)) {
throw msgpack::type_error();
}
using tuple_t = decltype(to_tuple(std::declval<T>(), gen_seq<boost::mpl::size<T>::value>()));
return to_t(
o.as<tuple_t>(),
msgpack::gen_seq<boost::mpl::size<T>::value>());
}
template<std::size_t... Is, typename U>
static std::tuple<
typename std::remove_reference<
typename boost::fusion::result_of::at_c<T, Is>::type
>::type...>
to_tuple(U const& u, seq<Is...>) {
return std::make_tuple(boost::fusion::at_c<Is>(u)...);
}
template<std::size_t... Is, typename U>
static T to_t(U const& u, seq<Is...>) {
return T(std::get<Is>(u)...);
}
};
#endif // !defined (MSGPACK_USE_CPP03)
template <typename T>
struct convert<T, typename msgpack::enable_if<detail::is_seq_no_pair_no_tuple<T>::value>::type > {
msgpack::object const& operator()(msgpack::object const& o, T& v) const {
if (o.type != msgpack::type::ARRAY) { throw msgpack::type_error(); }
if (o.via.array.size != checked_get_container_size(boost::fusion::size(v))) {
throw msgpack::type_error();
}
uint32_t index = 0;
boost::fusion::for_each(v, convert_imp(o, index));
return o;
}
private:
struct convert_imp {
convert_imp(msgpack::object const& obj, uint32_t& index):obj_(obj), index_(index) {}
template <typename U>
void operator()(U& v) const {
msgpack::adaptor::convert<U>()(obj_.via.array.ptr[index_++], v);
}
private:
msgpack::object const& obj_;
uint32_t& index_;
};
};
template <typename T>
struct pack<T, typename msgpack::enable_if<detail::is_seq_no_pair_no_tuple<T>::value>::type > {
template <typename Stream>
msgpack::packer<Stream>& operator()(msgpack::packer<Stream>& o, const T& v) const {
uint32_t size = checked_get_container_size(boost::fusion::size(v));
o.pack_array(size);
boost::fusion::for_each(v, pack_imp<Stream>(o));
return o;
}
private:
template <typename Stream>
struct pack_imp {
pack_imp(msgpack::packer<Stream>& stream):stream_(stream) {}
template <typename U>
void operator()(U const& v) const {
stream_.pack(v);
}
private:
msgpack::packer<Stream>& stream_;
};
};
template <typename T>
struct object_with_zone<T, typename msgpack::enable_if<detail::is_seq_no_pair_no_tuple<T>::value>::type > {
void operator()(msgpack::object::with_zone& o, const T& v) const {
uint32_t size = checked_get_container_size(boost::fusion::size(v));
o.type = msgpack::type::ARRAY;
o.via.array.ptr = static_cast<msgpack::object*>(o.zone.allocate_align(sizeof(msgpack::object)*size, MSGPACK_ZONE_ALIGNOF(msgpack::object)));
o.via.array.size = size;
uint32_t count = 0;
boost::fusion::for_each(v, with_zone_imp(o, count));
}
private:
struct with_zone_imp {
with_zone_imp(msgpack::object::with_zone const& obj, uint32_t& count):obj_(obj), count_(count) {}
template <typename U>
void operator()(U const& v) const {
obj_.via.array.ptr[count_++] = msgpack::object(v, obj_.zone);
}
msgpack::object::with_zone const& obj_;
uint32_t& count_;
};
};
} // namespace adaptor
/// @cond
} // MSGPACK_API_VERSION_NAMESPACE(v1)
/// @endcond
} // namespace msgpack
#endif // MSGPACK_V1_TYPE_BOOST_FUSION_HPP
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