projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*============================================================================= |
| 2 | Copyright (c) 2006-2007 Tobias Schwinger | |
| 3 | ||
| 4 | Use modification and distribution are subject to the Boost Software | |
| 5 | License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
| 6 | http://www.boost.org/LICENSE_1_0.txt). | |
| 7 | ==============================================================================*/ | |
| 8 | ||
| 9 | #if !defined(BOOST_FUSION_FUNCTIONAL_INVOCATION_DETAIL_THAT_PTR_HPP_INCLUDED) | |
| 10 | #define BOOST_FUSION_FUNCTIONAL_INVOCATION_DETAIL_THAT_PTR_HPP_INCLUDED | |
| 11 | ||
| 12 | #include <boost/fusion/support/config.hpp> | |
| 13 | #include <boost/get_pointer.hpp> | |
| 14 | #include <boost/utility/addressof.hpp> | |
| 15 | #include <boost/type_traits/remove_reference.hpp> | |
| 16 | ||
| 17 | namespace boost { namespace fusion { namespace detail | |
| 18 | { | |
| 19 | template <typename Wanted> | |
| 20 | struct that_ptr | |
| 21 | { | |
| 22 | private: | |
| 23 | ||
| 24 | typedef typename remove_reference<Wanted>::type pointee; | |
| 25 | ||
| 26 | template <typename T> | |
| 27 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 28 | static inline pointee * do_get_pointer(T &, pointee * x) | |
| 29 | { | |
| 30 | return x; | |
| 31 | } | |
| 32 | template <typename T> | |
| 33 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 34 | static inline pointee * do_get_pointer(T & x, void const *) | |
| 35 | { | |
| 36 | return get_pointer(x); | |
| 37 | } | |
| 38 | ||
| 39 | public: | |
| 40 | ||
| 41 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 42 | static inline pointee * get(pointee * x) | |
| 43 | { | |
| 44 | return x; | |
| 45 | } | |
| 46 | ||
| 47 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 48 | static inline pointee * get(pointee & x) | |
| 49 | { | |
| 50 | return boost::addressof(x); | |
| 51 | } | |
| 52 | ||
| 53 | template <typename T> | |
| 54 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 55 | static inline pointee * get(T & x) | |
| 56 | { | |
| 57 | return do_get_pointer(x, boost::addressof(x)); | |
| 58 | } | |
| 59 | }; | |
| 60 | ||
| 61 | template <typename PtrOrSmartPtr> struct non_const_pointee; | |
| 62 | ||
| 63 | #if defined(BOOST_MSVC) || (defined(__BORLANDC__) && !defined(BOOST_DISABLE_WIN32)) | |
| 64 | # define BOOST_FUSION_TRAIT_DECL __cdecl | |
| 65 | #else | |
| 66 | # define BOOST_FUSION_TRAIT_DECL /**/ | |
| 67 | #endif | |
| 68 | ||
| 69 | namespace adl_barrier | |
| 70 | { | |
| 71 | using boost::get_pointer; | |
| 72 | void const * BOOST_FUSION_TRAIT_DECL get_pointer(...); // fallback | |
| 73 | ||
| 74 | template< typename T> char const_tester(T *); | |
| 75 | template< typename T> long const_tester(T const *); | |
| 76 | ||
| 77 | template <typename Ptr> | |
| 78 | struct non_const_pointee_impl | |
| 79 | { | |
| 80 | static Ptr & what; | |
| 81 | ||
| 82 | static bool const value = | |
| 83 | sizeof(const_tester(get_pointer(what))) == 1; | |
| 84 | }; | |
| 85 | } | |
| 86 | ||
| 87 | template <typename PtrOrSmartPtr> struct non_const_pointee | |
| 88 | : adl_barrier::non_const_pointee_impl< | |
| 89 | typename remove_cv< | |
| 90 | typename remove_reference<PtrOrSmartPtr>::type >::type > | |
| 91 | { | |
| 92 | typedef non_const_pointee type; | |
| 93 | typedef bool value_type; | |
| 94 | }; | |
| 95 | ||
| 96 | }}} | |
| 97 | ||
| 98 | #endif | |
| 99 |