msgpack-1.4.2/erb/cpp03_msgpack_tuple.hpp.erb

//
// MessagePack for C++ static resolution routine
//
// Copyright (C) 2008-2013 FURUHASHI Sadayuki and 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_CPP03_MSGPACK_TUPLE_HPP
#define MSGPACK_CPP03_MSGPACK_TUPLE_HPP

#include "msgpack/versioning.hpp"
#include "msgpack/object.hpp"
#include "msgpack/adaptor/adaptor_base.hpp"

namespace msgpack {

/// @cond
MSGPACK_API_VERSION_NAMESPACE(v1) {
/// @endcond

namespace type {

// FIXME operator==
// FIXME operator!=
<% GENERATION_LIMIT = 31 %>

/// @cond
template <typename A0 = void<%1.upto(GENERATION_LIMIT+1) {|i|%>, typename A<%=i%> = void<%}%>>
struct tuple;
/// @endcond

template <typename Tuple, int N>
struct tuple_element;

template <typename Tuple, int N>
struct const_tuple_element;

template <typename T>
struct tuple_type {
    typedef T type;
    typedef T value_type;
    typedef T& reference;
    typedef const T& const_reference;
    typedef const T& transparent_reference;
};

template <typename T>
struct tuple_type<T&> {
    typedef T type;
    typedef T& value_type;
    typedef T& reference;
    typedef const T& const_reference;
    typedef T& transparent_reference;
};

template <typename T>
struct tuple_type<const T&> {
    typedef T type;
    typedef T& value_type;
    typedef T& reference;
    typedef const T& const_reference;
    typedef const T& transparent_reference;
};

/// @cond
<%0.upto(GENERATION_LIMIT) {|i|%>
<%0.upto(i) {|j|%>
template <typename A0<%1.upto(i) {|k|%>, typename A<%=k%><%}%>>
struct tuple_element<tuple<A0<%1.upto(i) {|k|%>, A<%=k%><%}%>>, <%=j%>> : tuple_type<A<%=j%>> {
    tuple_element(tuple<A0<%1.upto(i) {|k|%>, A<%=k%> <%}%>>& x) : m_x(x.a<%=j%>) {}
    typename tuple_type<A<%=j%>>::reference get() { return m_x; }
    typename tuple_type<A<%=j%>>::const_reference get() const { return m_x; }
private:
    typename tuple_type<A<%=j%>>::reference m_x;
};
<%}%>
<%}%>

<%0.upto(GENERATION_LIMIT) {|i|%>
<%0.upto(i) {|j|%>
template <typename A0<%1.upto(i) {|k|%>, typename A<%=k%><%}%>>
struct const_tuple_element<tuple<A0<%1.upto(i) {|k|%>, A<%=k%><%}%>>, <%=j%>> : tuple_type<A<%=j%>> {
    const_tuple_element(const tuple<A0<%1.upto(i) {|k|%>, A<%=k%><%}%>>& x) : m_x(x.a<%=j%>) {}
    typename tuple_type<A<%=j%>>::const_reference get() const { return m_x; }
private:
    typename tuple_type<A<%=j%>>::const_reference m_x;
};
<%}%>
<%}%>
/// @endcond

template <>
struct tuple<> {
    tuple() {}
    tuple(msgpack::object const& o) { o.convert(*this); }
    typedef tuple<> value_type;
};

/// @cond
<%0.upto(GENERATION_LIMIT) {|i|%>
template <typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
struct tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> {
    typedef tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> value_type;
    tuple() {}
    tuple(typename tuple_type<A0>::transparent_reference _a0<%1.upto(i) {|j|%>, typename tuple_type<A<%=j%>>::transparent_reference _a<%=j%><%}%>) :
        a0(_a0)<%1.upto(i) {|j|%>, a<%=j%>(_a<%=j%>)<%}%> {}
    tuple(msgpack::object const& o) { o.convert(*this); }
    template <int N> typename tuple_element<value_type, N>::reference get()
        { return tuple_element<value_type, N>(*this).get(); }
    template <int N> typename const_tuple_element<value_type, N>::const_reference get() const
        { return const_tuple_element<value_type, N>(*this).get(); }
    <%0.upto(i) {|j|%>
    A<%=j%> a<%=j%>;<%}%>
};

template <int N, typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
inline typename type::tuple_element<type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>>, N>::reference get(type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>>& t)
{ return t.template get<N>(); }
template <int N, typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
inline typename type::const_tuple_element<type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>>, N>::const_reference get(type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> const& t)
{ return t.template get<N>(); }
<%}%>
/// @endcond

inline tuple<> make_tuple()
{
    return tuple<>();
}

/// @cond
<%0.upto(GENERATION_LIMIT) {|i|%>
template <typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
inline tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> make_tuple(typename tuple_type<A0>::transparent_reference a0<%1.upto(i) {|j|%>, typename tuple_type<A<%=j%>>::transparent_reference a<%=j%><%}%>)
{
    return tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>>(a0<%1.upto(i) {|j|%>, a<%=j%><%}%>);
}
<%}%>
/// @endcond

}  // namespace type

namespace adaptor {

template <>
struct convert<type::tuple<> > {
    msgpack::object const& operator()(
        msgpack::object const& o,
        type::tuple<>&) const {
        if(o.type != msgpack::type::ARRAY) { throw msgpack::type_error(); }
        return o;
    }
};

/// @cond
<%0.upto(GENERATION_LIMIT) {|i|%>
template <typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
struct convert<type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> > {
    msgpack::object const& operator()(
        msgpack::object const& o,
        type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>>& v) const {
        if(o.type != msgpack::type::ARRAY) { throw msgpack::type_error(); }
        if(o.via.array.size < <%=i+1%>) { throw msgpack::type_error(); }
        <%0.upto(i) {|j|%>
        // In order to avoid clang++'s invalid warning, msgpack::object:: has been added.
        o.via.array.ptr[<%=j%>].msgpack::object::convert<typename type::tuple_type<A<%=j%>>::type>(v.template get<<%=j%>>());<%}%>
        return o;
    }
};
<%}%>
/// @endcond

template <>
struct pack<type::tuple<> > {
    template <typename Stream>
    msgpack::packer<Stream>& operator()(
        msgpack::packer<Stream>& o,
        const type::tuple<>&) const {
        o.pack_array(0);
        return o;
    }
};

/// @cond
<%0.upto(GENERATION_LIMIT) {|i|%>
template <typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
struct pack<type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> > {
    template <typename Stream>
    msgpack::packer<Stream>& operator()(
        msgpack::packer<Stream>& o,
        const type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>>& v) const {
        o.pack_array(<%=i+1%>);
        <%0.upto(i) {|j|%>
        o.pack(v.template get<<%=j%>>());<%}%>
        return o;
    }
};
<%}%>
/// @endcond

template <>
struct object_with_zone<type::tuple<> > {
    void operator()(
        msgpack::object::with_zone& o,
        const type::tuple<>&) const {
        o.type = msgpack::type::ARRAY;
        o.via.array.ptr = nullptr;
        o.via.array.size = 0;
    }
};

/// @cond
<%0.upto(GENERATION_LIMIT) {|i|%>
template <typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
struct object_with_zone<type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> > {
    void operator()(
        msgpack::object::with_zone& o,
        const type::tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>>& v) const {
        o.type = msgpack::type::ARRAY;
        o.via.array.ptr = static_cast<msgpack::object*>(o.zone.allocate_align(sizeof(msgpack::object)*<%=i+1%>));
        o.via.array.size = <%=i+1%>;
        <%0.upto(i) {|j|%>
        o.via.array.ptr[<%=j%>] = msgpack::object(v.template get<<%=j%>>(), o.zone);<%}%>
    }
};
<%}%>
/// @endcond

} // namespace adaptor

/// @cond
}  // MSGPACK_API_VERSION_NAMESPACE(v1)
/// @endcond

}  // namespace msgpack

#endif // MSGPACK_CPP03_MSGPACK_TUPLE_HPP
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