110 lines
3.0 KiB
C++
110 lines
3.0 KiB
C++
//
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// MessagePack for C++ static resolution routine
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//
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// Copyright (C) 2008-2016 FURUHASHI Sadayuki and KONDO Takatoshi
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef MSGPACK_V2_OBJECT_FWD_HPP
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#define MSGPACK_V2_OBJECT_FWD_HPP
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#include "rpc/msgpack/v2/object_fwd_decl.hpp"
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#include "rpc/msgpack/object_fwd.hpp"
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namespace clmdep_msgpack {
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/// @cond
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MSGPACK_API_VERSION_NAMESPACE(v2) {
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/// @endcond
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struct object : v1::object {
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object() {}
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object(v1::object const& o):v1::object(o) {}
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/// Construct object from T
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/**
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* If `v` is the type that is corresponding to MessegePack format str, bin, ext, array, or map,
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* you need to call `object(const T& v, clmdep_msgpack::zone& z)` instead of this constructor.
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*
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* @tparam T The type of `v`.
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* @param v The value you want to convert.
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*/
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template <typename T>
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explicit object(const T& v) {
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*this << v;
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}
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/// Construct object from T
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/**
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* The object is constructed on the zone `z`.
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* See https://github.com/msgpack/msgpack-c/wiki/v1_1_cpp_object
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*
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* @tparam T The type of `v`.
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* @param v The value you want to convert.
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* @param z The zone that is used by the object.
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*/
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template <typename T>
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object(const T& v, clmdep_msgpack::zone& z):v1::object(v, z) {}
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public:
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/// Convert the object
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/**
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* If the object can't be converted to T, clmdep_msgpack::type_error would be thrown.
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* @tparam T The type of v.
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* @param v The value you want to get. `v` is output parameter. `v` is overwritten by converted value from the object.
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* @return The reference of `v`.
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*/
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template <typename T>
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T& convert(T& v) const { return v1::object::convert(v); }
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using v1::object::with_zone;
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implicit_type convert() const;
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};
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#if !defined(MSGPACK_USE_CPP03)
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namespace adaptor {
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// If v1 has as specialization for T, then dispatch v1::adaptor::as<T>.
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// So I call v1::has_as<T> meta function intentionally.
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template <typename T>
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struct as<T, typename std::enable_if<v1::has_as<T>::value>::type> : v1::adaptor::as<T> {
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};
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} // namespace adaptor
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template <typename T>
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struct has_as {
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private:
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template <typename U>
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static auto check(U*) ->
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typename std::enable_if<
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// check v2 specialization
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std::is_same<
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decltype(adaptor::as<U>()(std::declval<clmdep_msgpack::object>())),
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U
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>::value
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// check v1 specialization
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v1::has_as<U>::value,
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std::true_type
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>::type;
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template <typename>
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static std::false_type check(...);
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public:
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using type = decltype(check<T>(MSGPACK_NULLPTR));
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static constexpr bool value = type::value;
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};
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#endif // !defined(MSGPACK_USE_CPP03)
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/// @cond
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} // MSGPACK_API_VERSION_NAMESPACE(v2)
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/// @endcond
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} // namespace clmdep_msgpack
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#endif // MSGPACK_V2_OBJECT_FWD_HPP
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