1/* 2 * MessagePack for C++ version switcher 3 * 4 * Copyright (C) 2014 KONDO Takatoshi 5 * 6 * Distributed under the Boost Software License, Version 1.0. 7 * (See accompanying file LICENSE_1_0.txt or copy at 8 * http://www.boost.org/LICENSE_1_0.txt) 9 */ 10#ifndef MSGPACK_VERSIONING_HPP 11#define MSGPACK_VERSIONING_HPP 12 13#if !defined(MSGPACK_DEFAULT_API_VERSION) 14#define MSGPACK_DEFAULT_API_VERSION 1 15#endif 16 17#define MSGPACK_DEFAULT_API_NS MSGPACK_DETAIL_PP_CAT(v, MSGPACK_DEFAULT_API_VERSION) 18 19#if MSGPACK_DEFAULT_API_VERSION == 1 20#define MSGPACK_DETAIL_PP_ENABLE_NS_v1 () 21//#elif MSGPACK_DEFAULT_API_VERSION == 2 22//#define MSGPACK_DETAIL_PP_ENABLE_NS_v2 () 23#else 24#error 25#endif 26 27#define MSGPACK_DETAIL_PP_CAT(a, ...) MSGPACK_DETAIL_PP_PRIMITIVE_CAT(a, __VA_ARGS__) 28#define MSGPACK_DETAIL_PP_PRIMITIVE_CAT(a, ...) a ## __VA_ARGS__ 29 30#define MSGPACK_DETAIL_PP_IIF(c) MSGPACK_DETAIL_PP_PRIMITIVE_CAT(MSGPACK_DETAIL_PP_IIF_, c) 31#define MSGPACK_DETAIL_PP_IIF_0(t, ...) __VA_ARGS__ 32#define MSGPACK_DETAIL_PP_IIF_1(t, ...) t 33 34#define MSGPACK_DETAIL_PP_PROBE(x) x, 1 35 36#if defined(_MSC_VER) 37 38#define MSGPACK_DETAIL_PP_MSVC_VA_ARGS_WORKAROUND(define, args) define args 39#define MSGPACK_DETAIL_PP_CHECK(...) MSGPACK_DETAIL_PP_MSVC_VA_ARGS_WORKAROUND(MSGPACK_DETAIL_PP_CHECK_N, (__VA_ARGS__, 0)) 40#define MSGPACK_DETAIL_PP_CHECK_N(x, n, ...) n 41 42#else // defined(__MSC_VER) 43 44#define MSGPACK_DETAIL_PP_CHECK(...) MSGPACK_DETAIL_PP_CHECK_N(__VA_ARGS__, 0) 45#define MSGPACK_DETAIL_PP_CHECK_N(x, n, ...) n 46 47#endif // defined(__MSC_VER) 48 49 50#define MSGPACK_DETAIL_PP_NS_ENABLED_PROBE(ns) MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_PROXY( MSGPACK_DETAIL_PP_ENABLE_NS_##ns ) 51#define MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_PROXY(...) MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_PRIMIVIE(__VA_ARGS__) 52#define MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_PRIMIVIE(x) MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_COMBINE_ x 53#define MSGPACK_DETAIL_PP_NS_ENABLED_PROBE_COMBINE_(...) MSGPACK_DETAIL_PP_PROBE(~) 54 55#define MSGPACK_DETAIL_PP_IS_NS_ENABLED(ns) MSGPACK_DETAIL_PP_CHECK(MSGPACK_DETAIL_PP_NS_ENABLED_PROBE(ns)) 56 57#if __cplusplus < 201103L 58#define MSGPACK_API_VERSION_NAMESPACE(ns) MSGPACK_DETAIL_PP_IIF(MSGPACK_DETAIL_PP_IS_NS_ENABLED(ns)) \ 59 (namespace ns{}; using namespace ns; namespace ns, \ 60 namespace ns) 61 62#else // __cplusplus < 201103L 63 64#define MSGPACK_API_VERSION_NAMESPACE(ns) MSGPACK_DETAIL_PP_IIF(MSGPACK_DETAIL_PP_IS_NS_ENABLED(ns)) \ 65 (inline namespace ns, namespace ns) 66 67#endif // __cplusplus < 201103L 68 69#endif // MSGPACK_VERSIONING_HPP 70