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/*
* MessagePack for C++ version switcher
*
* Copyright (C) 2014 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)
*/
#ifndef MSGPACK_VERSIONING_HPP
#define MSGPACK_VERSIONING_HPP
#if !defined(MSGPACK_DEFAULT_API_VERSION)
#define MSGPACK_DEFAULT_API_VERSION 3
#endif
#define MSGPACK_DEFAULT_API_NS MSGPACK_DETAIL_PP_CAT(v, MSGPACK_DEFAULT_API_VERSION)
#if MSGPACK_DEFAULT_API_VERSION == 1
#define MSGPACK_DETAIL_PP_ENABLE_NS_v1 ()
#elif MSGPACK_DEFAULT_API_VERSION == 2
#define MSGPACK_DETAIL_PP_ENABLE_NS_v2 ()
#elif MSGPACK_DEFAULT_API_VERSION == 3
#define MSGPACK_DETAIL_PP_ENABLE_NS_v3 ()
#else
#error
#endif
#define MSGPACK_DETAIL_PP_CAT(a, ...) MSGPACK_DETAIL_PP_PRIMITIVE_CAT(a, __VA_ARGS__)
#define MSGPACK_DETAIL_PP_PRIMITIVE_CAT(a, ...) a ## __VA_ARGS__
#define MSGPACK_DETAIL_PP_IIF(c) MSGPACK_DETAIL_PP_PRIMITIVE_CAT(MSGPACK_DETAIL_PP_IIF_, c)
#define MSGPACK_DETAIL_PP_IIF_0(t, ...) __VA_ARGS__
#define MSGPACK_DETAIL_PP_IIF_1(t, ...) t
#define MSGPACK_DETAIL_PP_PROBE(x) x, 1
#if defined(_MSC_VER)
#define MSGPACK_DETAIL_PP_MSVC_VA_ARGS_WORKAROUND(define, args) define args
#define MSGPACK_DETAIL_PP_CHECK(...) MSGPACK_DETAIL_PP_MSVC_VA_ARGS_WORKAROUND(MSGPACK_DETAIL_PP_CHECK_N, (__VA_ARGS__, 0, 0))
#define MSGPACK_DETAIL_PP_CHECK_N(x, n, ...) n
#else // defined(__MSC_VER)
#define MSGPACK_DETAIL_PP_CHECK(...) MSGPACK_DETAIL_PP_CHECK_N(__VA_ARGS__, 0, 0)
#define MSGPACK_DETAIL_PP_CHECK_N(x, n, ...) n
#endif // defined(__MSC_VER)
#define MSGPACK_DETAIL_PP_NS_ENABLED_PROBE(ns) MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_PROXY( MSGPACK_DETAIL_PP_ENABLE_NS_##ns )
#define MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_PROXY(...) MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_PRIMIVIE(__VA_ARGS__)
#define MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_PRIMIVIE(x) MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_COMBINE_ x
#define MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_COMBINE_(...) MSGPACK_DETAIL_PP_PROBE(~)
#define MSGPACK_DETAIL_PP_IS_NS_ENABLED(ns) MSGPACK_DETAIL_PP_CHECK(MSGPACK_DETAIL_PP_NS_ENABLED_PROBE(ns))
#if __cplusplus < 201103L
#define MSGPACK_API_VERSION_NAMESPACE(ns) MSGPACK_DETAIL_PP_IIF(MSGPACK_DETAIL_PP_IS_NS_ENABLED(ns)) \
(namespace ns{}; using namespace ns; namespace ns, \
namespace ns)
#else // __cplusplus < 201103L
#define MSGPACK_API_VERSION_NAMESPACE(ns) MSGPACK_DETAIL_PP_IIF(MSGPACK_DETAIL_PP_IS_NS_ENABLED(ns)) \
(inline namespace ns, namespace ns)
#endif // __cplusplus < 201103L
#endif // MSGPACK_VERSIONING_HPP
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