csu3_am335x/EVSE/GPL/msgpack-3.1.1/example/cpp11/non_def_con_class.cpp

// MessagePack for C++ example
//
// Copyright (C) 2015 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)
//

#include <cassert>
#include <memory>
#include <iostream>

#include <msgpack.hpp>

struct my {
    my() = delete;

    // target class should be either copyable or movable (or both).
    my(my const&) = delete;
    my(my&&) = default;

    my(int a):a(a) {}
    int a;
    MSGPACK_DEFINE(a);
};

namespace msgpack {
MSGPACK_API_VERSION_NAMESPACE(MSGPACK_DEFAULT_API_NS) {
namespace adaptor {

template<>
struct as<my> {
    my operator()(msgpack::object const& o) const {
        if (o.type != msgpack::type::ARRAY) throw msgpack::type_error();
        if (o.via.array.size != 1) throw msgpack::type_error();
        return my(o.via.array.ptr[0].as<int>());
    }
};

} // namespace adaptor
} // MSGPACK_API_VERSION_NAMESPACE(MSGPACK_DEFAULT_API_NS)
} // namespace msgpack

int main() {
    my m1(42);
    msgpack::zone z;
    msgpack::object obj(m1, z);
    std::cout << obj << std::endl;
    assert(m1.a == obj.as<my>().a);
}