msgpack/erb/cpp03_define_array.hpp.erb

//
// MessagePack for C++ static resolution routine
//
// Copyright (C) 2008-2009 FURUHASHI Sadayuki
//
//    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_DEFINE_ARRAY_HPP
#define MSGPACK_CPP03_DEFINE_ARRAY_HPP

#include "msgpack/versioning.hpp"
#include "msgpack/adaptor/msgpack_tuple.hpp"
#include "msgpack/adaptor/adaptor_base.hpp"
#include "msgpack/object_fwd.hpp"

#define MSGPACK_DEFINE_ARRAY(...) \
    template <typename Packer> \
    void msgpack_pack(Packer& pk) const \
    { \
        msgpack::type::make_define_array(__VA_ARGS__).msgpack_pack(pk); \
    } \
    void msgpack_unpack(msgpack::object const& o) \
    { \
        msgpack::type::make_define_array(__VA_ARGS__).msgpack_unpack(o); \
    }\
    template <typename MSGPACK_OBJECT> \
    void msgpack_object(MSGPACK_OBJECT* o, msgpack::zone& z) const \
    { \
        msgpack::type::make_define_array(__VA_ARGS__).msgpack_object(o, z); \
    }

#define MSGPACK_BASE_ARRAY(base) (*const_cast<base *>(static_cast<base const*>(this)))

// MSGPACK_ADD_ENUM must be used in the global namespace.
#define MSGPACK_ADD_ENUM(enum_name) \
  namespace msgpack { \
  /** @cond */ \
  MSGPACK_API_VERSION_NAMESPACE(v1) { \
  /** @endcond */ \
  namespace adaptor { \
    template<> \
    struct convert<enum_name> { \
      msgpack::object const& operator()(msgpack::object const& o, enum_name& v) const {\
        int tmp; \
        o >> tmp; \
        v = static_cast<enum_name>(tmp); \
        return o; \
      } \
    }; \
    template<> \
    struct object<enum_name> { \
      void operator()(msgpack::object& o, const enum_name& v) const {\
        o << static_cast<int>(v); \
      } \
    }; \
    template<> \
    struct object_with_zone<enum_name> { \
      void operator()(msgpack::object::with_zone& o, const enum_name& v) const { \
        o << static_cast<int>(v); \
      } \
    }; \
    template<> \
    struct pack<enum_name> { \
      template <typename Stream> \
      msgpack::packer<Stream>& operator()(msgpack::packer<Stream>& o, const enum_name& v) const { \
        return o << static_cast<int>(v); \
      } \
    }; \
  } \
  /** @cond */ \
  } \
  /** @endcond */ \
  }

namespace msgpack {
/// @cond
MSGPACK_API_VERSION_NAMESPACE(v1) {
/// @endcond
namespace type {

/// @cond
<% GENERATION_LIMIT = 31 %>
template <typename A0 = void<%1.upto(GENERATION_LIMIT+1) {|i|%>, typename A<%=i%> = void<%}%>>
struct define_array;
/// @endcond

template <>
struct define_array<> {
    typedef define_array<> value_type;
    typedef tuple<> tuple_type;
    template <typename Packer>
    void msgpack_pack(Packer& pk) const
    {
        pk.pack_array(0);
    }
    void msgpack_unpack(msgpack::object const& o)
    {
        if(o.type != msgpack::type::ARRAY) { throw msgpack::type_error(); }
    }
    void msgpack_object(msgpack::object* o, msgpack::zone&) 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 define_array<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> {
    typedef define_array<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> value_type;
    typedef tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> tuple_type;
    define_array(A0& _a0<%1.upto(i) {|j|%>, A<%=j%>& _a<%=j%><%}%>) :
        a0(_a0)<%1.upto(i) {|j|%>, a<%=j%>(_a<%=j%>)<%}%> {}
    template <typename Packer>
    void msgpack_pack(Packer& pk) const
    {
        pk.pack_array(<%=i+1%>);
        <%0.upto(i) {|j|%>
        pk.pack(a<%=j%>);<%}%>
    }
    void msgpack_unpack(msgpack::object const& o)
    {
        if(o.type != msgpack::type::ARRAY) { throw msgpack::type_error(); }
        const size_t size = o.via.array.size;
        if(size > 0) {
            msgpack::object *ptr = o.via.array.ptr;
            switch(size) {
            default:<%(i).downto(0) {|j|%>
            case <%=j+1%>: ptr[<%=j%>].convert(a<%=j%>);<%}%>
            }
        }
    }
    void msgpack_object(msgpack::object* o, msgpack::zone& z) const
    {
        o->type = msgpack::type::ARRAY;
        o->via.array.ptr = static_cast<msgpack::object*>(z.allocate_align(sizeof(msgpack::object)*<%=i+1%>));
        o->via.array.size = <%=i+1%>;
        <%0.upto(i) {|j|%>
        o->via.array.ptr[<%=j%>] = msgpack::object(a<%=j%>, z);<%}%>
    }
    <%0.upto(i) {|j|%>
    A<%=j%>& a<%=j%>;<%}%>
};
<%}%>
/// @endcond

inline define_array<> make_define_array()
{
    return define_array<>();
}

/// @cond
<%0.upto(GENERATION_LIMIT) {|i|%>
template <typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
inline define_array<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> make_define_array(A0& a0<%1.upto(i) {|j|%>, A<%=j%>& a<%=j%><%}%>)
{
    return define_array<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>>(a0<%1.upto(i) {|j|%>, a<%=j%><%}%>);
}
<%}%>
/// @endcond

}  // namespace type
/// @cond
}  // MSGPACK_API_VERSION_NAMESPACE(v1)
/// @endcond
}  // namespace msgpack


#endif // MSGPACK_CPP03_DEFINE_ARRAY_HPP