Swiftdiff options
Diffstat (limited to '3rdParty/Boost/src/boost/variant/variant_fwd.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/variant/variant_fwd.hpp | 106 |
1 files changed, 92 insertions, 14 deletions
diff --git a/3rdParty/Boost/src/boost/variant/variant_fwd.hpp b/3rdParty/Boost/src/boost/variant/variant_fwd.hpp index 133f437..a15b0a2 100644 --- a/3rdParty/Boost/src/boost/variant/variant_fwd.hpp +++ b/3rdParty/Boost/src/boost/variant/variant_fwd.hpp @@ -1,13 +1,13 @@ //----------------------------------------------------------------------------- // boost variant/variant_fwd.hpp header file // See http://www.boost.org for updates, documentation, and revision history. //----------------------------------------------------------------------------- // -// Copyright (c) 2003 -// Eric Friedman, Itay Maman +// Copyright (c) 2003 Eric Friedman, Itay Maman +// Copyright (c) 2013 Antony Polukhin // // 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 BOOST_VARIANT_VARIANT_FWD_HPP @@ -23,22 +23,12 @@ #include "boost/preprocessor/enum.hpp" #include "boost/preprocessor/enum_params.hpp" #include "boost/preprocessor/enum_shifted_params.hpp" #include "boost/preprocessor/repeat.hpp" /////////////////////////////////////////////////////////////////////////////// -// macro BOOST_VARIANT_LIMIT_TYPES -// -// Implementation-defined preprocessor symbol describing the actual -// length of variant's pseudo-variadic template parameter list. -// -#include "boost/mpl/limits/list.hpp" -#define BOOST_VARIANT_LIMIT_TYPES \ - BOOST_MPL_LIMIT_LIST_SIZE - -/////////////////////////////////////////////////////////////////////////////// // macro BOOST_VARIANT_NO_REFERENCE_SUPPORT // // Defined if variant does not support references as bounded types. // #if defined(BOOST_VARIANT_AUX_BROKEN_CONSTRUCTOR_TEMPLATE_ORDERING) \ && !defined(BOOST_VARIANT_AUX_HAS_CONSTRUCTOR_TEMPLATE_ORDERING_SFINAE_WKND) \ @@ -64,16 +54,97 @@ // so only types declared w/ MPL lambda workarounds will work. // #include "boost/variant/detail/substitute_fwd.hpp" #if defined(BOOST_VARIANT_DETAIL_NO_SUBSTITUTE) \ - && !defined(BOOST_VARIANT_NO_FULL_RECURSIVE_VARIANT_SUPPORT) + && !defined(BOOST_VARIANT_NO_FULL_RECURSIVE_VARIANT_SUPPORT) # define BOOST_VARIANT_NO_FULL_RECURSIVE_VARIANT_SUPPORT #endif + +/////////////////////////////////////////////////////////////////////////////// +// macro BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES +// + +/* + GCC before 4.0 had no variadic tempaltes; + GCC 4.6 has incomplete implementation of variadic templates. + + MSVC2013 has variadic templates, but they have issues. +*/ +#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) \ + || (defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 7)) \ + || (defined(_MSC_VER) && (_MSC_VER <= 1800)) \ + || defined(BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE) \ + || defined (BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT) + +#ifndef BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES +# define BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES +#endif + +#endif + +#if !defined(BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES) +#include <boost/preprocessor/seq/size.hpp> + +#define BOOST_VARIANT_CLASS_OR_TYPENAME_TO_SEQ_class class)( +#define BOOST_VARIANT_CLASS_OR_TYPENAME_TO_SEQ_typename typename)( + +#define BOOST_VARIANT_CLASS_OR_TYPENAME_TO_VARIADIC_class class... +#define BOOST_VARIANT_CLASS_OR_TYPENAME_TO_VARIADIC_typename typename... + +#define ARGS_VARIADER_1(x) x ## N... +#define ARGS_VARIADER_2(x) BOOST_VARIANT_CLASS_OR_TYPENAME_TO_VARIADIC_ ## x ## N + +#define BOOST_VARIANT_MAKE_VARIADIC(sequence, x) BOOST_VARIANT_MAKE_VARIADIC_I(BOOST_PP_SEQ_SIZE(sequence), x) +#define BOOST_VARIANT_MAKE_VARIADIC_I(argscount, x) BOOST_VARIANT_MAKE_VARIADIC_II(argscount, x) +#define BOOST_VARIANT_MAKE_VARIADIC_II(argscount, orig) ARGS_VARIADER_ ## argscount(orig) + +/////////////////////////////////////////////////////////////////////////////// +// BOOST_VARIANT_ENUM_PARAMS and BOOST_VARIANT_ENUM_SHIFTED_PARAMS +// +// Convenience macro for enumeration of variant params. +// When variadic templates are available expands: +// BOOST_VARIANT_ENUM_PARAMS(class Something) => class Something0, class... SomethingN +// BOOST_VARIANT_ENUM_PARAMS(typename Something) => typename Something0, typename... SomethingN +// BOOST_VARIANT_ENUM_PARAMS(Something) => Something0, SomethingN... +// BOOST_VARIANT_ENUM_PARAMS(Something) => Something0, SomethingN... +// BOOST_VARIANT_ENUM_SHIFTED_PARAMS(class Something) => class... SomethingN +// BOOST_VARIANT_ENUM_SHIFTED_PARAMS(typename Something) => typename... SomethingN +// BOOST_VARIANT_ENUM_SHIFTED_PARAMS(Something) => SomethingN... +// BOOST_VARIANT_ENUM_SHIFTED_PARAMS(Something) => SomethingN... +// +// Rationale: Cleaner, simpler code for clients of variant library. Minimal +// code modifications to move from C++03 to C++11. +// +// With BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES defined +// will be used BOOST_VARIANT_ENUM_PARAMS and BOOST_VARIANT_ENUM_SHIFTED_PARAMS from below `#else` +// + +#define BOOST_VARIANT_ENUM_PARAMS(x) \ + x ## 0, \ + BOOST_VARIANT_MAKE_VARIADIC( (BOOST_VARIANT_CLASS_OR_TYPENAME_TO_SEQ_ ## x), x) \ + /**/ + +#define BOOST_VARIANT_ENUM_SHIFTED_PARAMS(x) \ + BOOST_VARIANT_MAKE_VARIADIC( (BOOST_VARIANT_CLASS_OR_TYPENAME_TO_SEQ_ ## x), x) \ + /**/ + +#else // defined(BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES) + +/////////////////////////////////////////////////////////////////////////////// +// macro BOOST_VARIANT_LIMIT_TYPES +// +// Implementation-defined preprocessor symbol describing the actual +// length of variant's pseudo-variadic template parameter list. +// +#include "boost/mpl/limits/list.hpp" +#define BOOST_VARIANT_LIMIT_TYPES \ + BOOST_MPL_LIMIT_LIST_SIZE + /////////////////////////////////////////////////////////////////////////////// // macro BOOST_VARIANT_RECURSIVE_VARIANT_MAX_ARITY // // Exposes maximum allowed arity of class templates with recursive_variant // arguments. That is, // make_recursive_variant< ..., T<[1], recursive_variant_, ... [N]> >. @@ -97,12 +168,14 @@ // // Convenience macro for enumeration of BOOST_VARIANT_LIMIT_TYPES-1 params. // #define BOOST_VARIANT_ENUM_SHIFTED_PARAMS( param ) \ BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_VARIANT_LIMIT_TYPES, param) +#endif // BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES workaround + namespace boost { namespace detail { namespace variant { /////////////////////////////////////////////////////////////////////////////// @@ -136,13 +209,12 @@ struct convert_void< void_ > // // Needed to work around compilers that don't support using-declaration // overloads. (See the variant::initializer workarounds below.) // #if defined(BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE) - // (detail) tags voidNN -- NN defined on [0, BOOST_VARIANT_LIMIT_TYPES) // // Defines void types that are each unique and specializations of // convert_void that yields mpl::na for each voidNN type. // @@ -165,12 +237,16 @@ BOOST_PP_REPEAT( #undef BOOST_VARIANT_DETAIL_DEFINE_VOID_N #endif // BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE workaround }} // namespace detail::variant +#if !defined(BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES) +# define BOOST_VARIANT_AUX_DECLARE_PARAMS BOOST_VARIANT_ENUM_PARAMS(typename T) +#else // defined(BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES) + /////////////////////////////////////////////////////////////////////////////// // (detail) macro BOOST_VARIANT_AUX_DECLARE_PARAM // // Template parameter list for variant and recursive_variant declarations. // @@ -193,12 +269,14 @@ BOOST_PP_REPEAT( BOOST_VARIANT_LIMIT_TYPES \ , BOOST_VARIANT_AUX_DECLARE_PARAMS_IMPL \ , T \ ) \ /**/ +#endif // BOOST_VARIANT_DO_NOT_USE_VARIADIC_TEMPLATES workaround + /////////////////////////////////////////////////////////////////////////////// // class template variant (concept inspired by Andrei Alexandrescu) // // Efficient, type-safe bounded discriminated union. // // Preconditions: |