msgpack/erb/cpp03_define.hpp.erb

//
// MessagePack for C++ static resolution routine
//
// Copyright (C) 2008-2009 FURUHASHI Sadayuki
//
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
//
//        http://www.apache.org/licenses/LICENSE-2.0
//
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
//
#ifndef MSGPACK_CPP03_DEFINE_HPP
#define MSGPACK_CPP03_DEFINE_HPP

#include "msgpack/versioning.hpp"
#include "msgpack/adaptor/msgpack_tuple_fwd.hpp"
#include "msgpack/object_fwd.hpp"

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

// MSGPACK_ADD_ENUM must be used in the global namespace.
#define MSGPACK_ADD_ENUM(enum) \
  namespace msgpack { \
  MSGPACK_API_VERSION_NAMESPACE(v1) { \
    template <> \
    inline object const& operator>> (object const& o, enum& v) \
    { \
      int tmp; \
      o >> tmp; \
      v = static_cast<enum>(tmp); \
      return o; \
    } \
    template <> \
    inline void operator<< (object::with_zone& o, const enum& v) \
    { \
      o << static_cast<int>(v); \
    } \
    namespace detail { \
      template <typename Stream> \
      struct packer_serializer<Stream, enum> { \
        static packer<Stream>& pack(packer<Stream>& o, const enum& v) { \
          return o << static_cast<int>(v); \
        } \
      }; \
    } \
  } \
  }

namespace msgpack {
MSGPACK_API_VERSION_NAMESPACE(v1) {
namespace type {


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


template <>
struct define<> {
    typedef define<> 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 != type::ARRAY) { throw type_error(); }
    }
    void msgpack_object(msgpack::object* o, msgpack::zone&) const
    {
        o->type = type::ARRAY;
        o->via.array.ptr = nullptr;
        o->via.array.size = 0;
    }
};
<%0.upto(GENERATION_LIMIT) {|i|%>
template <typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
struct define<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> {
    typedef define<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> value_type;
    typedef tuple<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> tuple_type;
    define(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 != type::ARRAY) { throw 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 = type::ARRAY;
        o->via.array.ptr = static_cast<object*>(z.allocate_align(sizeof(object)*<%=i+1%>));
        o->via.array.size = <%=i+1%>;
        <%0.upto(i) {|j|%>
        o->via.array.ptr[<%=j%>] = object(a<%=j%>, z);<%}%>
    }
    <%0.upto(i) {|j|%>
    A<%=j%>& a<%=j%>;<%}%>
};
<%}%>

inline define<> make_define()
{
    return define<>();
}
<%0.upto(GENERATION_LIMIT) {|i|%>
template <typename A0<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
define<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>> make_define(A0& a0<%1.upto(i) {|j|%>, A<%=j%>& a<%=j%><%}%>)
{
    return define<A0<%1.upto(i) {|j|%>, A<%=j%><%}%>>(a0<%1.upto(i) {|j|%>, a<%=j%><%}%>);
}
<%}%>

}  // namespace type
}  // MSGPACK_API_VERSION_NAMESPACE(v1)
}  // namespace msgpack


#endif // MSGPACK_CPP03_DEFINE_HPP