mirror of
https://github.com/msgpack/msgpack-c
synced 2026-06-08 16:11:40 +00:00
Jakob Petsovits
b5599ef3fc
Previously the conversion would fail because struct object is not generally provided for the const version of the type, but because the wrapper would pass down the type unchanged, it would look for exactly that missing template specialization unsuccessfully. This is specifically an issue for std::reference_wrapper because std::cref() returns an std::reference_wrapper<const T>.
77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
//
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// MessagePack for C++ static resolution routine
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//
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// Copyright (C) 2015 KONDO Takatoshi
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef MSGPACK_CPP11_REFERENCE_WRAPPER_HPP
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#define MSGPACK_CPP11_REFERENCE_WRAPPER_HPP
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#include "msgpack/versioning.hpp"
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#include "msgpack/adaptor/adaptor_base.hpp"
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#include "msgpack/adaptor/check_container_size.hpp"
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#include <memory>
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#include <type_traits>
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namespace msgpack {
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/// @cond
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MSGPACK_API_VERSION_NAMESPACE(v1) {
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/// @endcond
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namespace adaptor {
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template <typename T>
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struct convert<std::reference_wrapper<T>> {
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msgpack::object const& operator()(msgpack::object const& o, std::reference_wrapper<T>& v) const {
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msgpack::adaptor::convert<T>()(o, v.get());
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return o;
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}
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};
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template <typename T>
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struct pack<std::reference_wrapper<T>> {
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template <typename Stream>
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msgpack::packer<Stream>& operator()(msgpack::packer<Stream>& o, const std::reference_wrapper<T>& v) const {
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o.pack(v.get());
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return o;
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}
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};
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template <typename T>
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struct object<std::reference_wrapper<T> > {
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void operator()(msgpack::object& o, const std::reference_wrapper<T>& v) const {
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msgpack::adaptor::object<typename std::remove_const<T>::type>()(o, v.get());
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}
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};
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template <typename T>
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struct object_with_zone<std::reference_wrapper<T>> {
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void operator()(msgpack::object::with_zone& o, const std::reference_wrapper<T>& v) const {
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msgpack::adaptor::object_with_zone<typename std::remove_const<T>::type>()(o, v.get());
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}
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};
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} // namespace adaptor
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/// @cond
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} // MSGPACK_API_VERSION_NAMESPACE(v1)
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/// @endcond
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} // namespace msgpack
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#endif // MSGPACK_CPP11_REFERENCE_WRAPPER_HPP
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