Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 1 | // -*- C++ -*- |
| 2 | //===----------------------------------------------------------------------===// |
| 3 | // |
Howard Hinnant | f5256e1 | 2010-05-11 21:36:01 +0000 | [diff] [blame] | 4 | // The LLVM Compiler Infrastructure |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 5 | // |
Howard Hinnant | b64f8b0 | 2010-11-16 22:09:02 +0000 | [diff] [blame] | 6 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 7 | // Source Licenses. See LICENSE.TXT for details. |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 8 | // |
| 9 | //===----------------------------------------------------------------------===// |
| 10 | |
| 11 | #ifndef _LIBCPP_FUNCTIONAL_BASE |
| 12 | #define _LIBCPP_FUNCTIONAL_BASE |
| 13 | |
| 14 | #include <__config> |
| 15 | #include <type_traits> |
| 16 | #include <typeinfo> |
| 17 | #include <exception> |
| 18 | |
Howard Hinnant | 08e1747 | 2011-10-17 20:05:10 +0000 | [diff] [blame] | 19 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 20 | #pragma GCC system_header |
Howard Hinnant | 08e1747 | 2011-10-17 20:05:10 +0000 | [diff] [blame] | 21 | #endif |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 22 | |
| 23 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 24 | |
| 25 | template <class _Arg, class _Result> |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 26 | struct _LIBCPP_VISIBLE unary_function |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 27 | { |
| 28 | typedef _Arg argument_type; |
| 29 | typedef _Result result_type; |
| 30 | }; |
| 31 | |
| 32 | template <class _Arg1, class _Arg2, class _Result> |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 33 | struct _LIBCPP_VISIBLE binary_function |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 34 | { |
| 35 | typedef _Arg1 first_argument_type; |
| 36 | typedef _Arg2 second_argument_type; |
| 37 | typedef _Result result_type; |
| 38 | }; |
| 39 | |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 40 | template <class _Tp> struct _LIBCPP_VISIBLE hash; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 41 | |
| 42 | template <class _Tp> |
| 43 | struct __has_result_type |
| 44 | { |
| 45 | private: |
Howard Hinnant | 9c0df14 | 2012-10-30 19:06:59 +0000 | [diff] [blame^] | 46 | struct __two {char __lx; char __lxx;}; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 47 | template <class _Up> static __two __test(...); |
| 48 | template <class _Up> static char __test(typename _Up::result_type* = 0); |
| 49 | public: |
| 50 | static const bool value = sizeof(__test<_Tp>(0)) == 1; |
| 51 | }; |
| 52 | |
Howard Hinnant | 3fadda3 | 2012-02-21 21:02:58 +0000 | [diff] [blame] | 53 | template <class _Tp> |
| 54 | struct _LIBCPP_VISIBLE less : binary_function<_Tp, _Tp, bool> |
| 55 | { |
| 56 | _LIBCPP_INLINE_VISIBILITY bool operator()(const _Tp& __x, const _Tp& __y) const |
| 57 | {return __x < __y;} |
| 58 | }; |
| 59 | |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 60 | #ifdef _LIBCPP_HAS_NO_VARIADICS |
| 61 | |
| 62 | #include <__functional_base_03> |
| 63 | |
| 64 | #else // _LIBCPP_HAS_NO_VARIADICS |
| 65 | |
| 66 | // __weak_result_type |
| 67 | |
| 68 | template <class _Tp> |
| 69 | struct __derives_from_unary_function |
| 70 | { |
| 71 | private: |
Howard Hinnant | 9c0df14 | 2012-10-30 19:06:59 +0000 | [diff] [blame^] | 72 | struct __two {char __lx; char __lxx;}; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 73 | static __two __test(...); |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 74 | template <class _Ap, class _Rp> |
| 75 | static unary_function<_Ap, _Rp> |
| 76 | __test(const volatile unary_function<_Ap, _Rp>*); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 77 | public: |
| 78 | static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value; |
| 79 | typedef decltype(__test((_Tp*)0)) type; |
| 80 | }; |
| 81 | |
| 82 | template <class _Tp> |
| 83 | struct __derives_from_binary_function |
| 84 | { |
| 85 | private: |
Howard Hinnant | 9c0df14 | 2012-10-30 19:06:59 +0000 | [diff] [blame^] | 86 | struct __two {char __lx; char __lxx;}; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 87 | static __two __test(...); |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 88 | template <class _A1, class _A2, class _Rp> |
| 89 | static binary_function<_A1, _A2, _Rp> |
| 90 | __test(const volatile binary_function<_A1, _A2, _Rp>*); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 91 | public: |
| 92 | static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value; |
| 93 | typedef decltype(__test((_Tp*)0)) type; |
| 94 | }; |
| 95 | |
| 96 | template <class _Tp, bool = __derives_from_unary_function<_Tp>::value> |
| 97 | struct __maybe_derive_from_unary_function // bool is true |
| 98 | : public __derives_from_unary_function<_Tp>::type |
| 99 | { |
| 100 | }; |
| 101 | |
| 102 | template <class _Tp> |
| 103 | struct __maybe_derive_from_unary_function<_Tp, false> |
| 104 | { |
| 105 | }; |
| 106 | |
| 107 | template <class _Tp, bool = __derives_from_binary_function<_Tp>::value> |
| 108 | struct __maybe_derive_from_binary_function // bool is true |
| 109 | : public __derives_from_binary_function<_Tp>::type |
| 110 | { |
| 111 | }; |
| 112 | |
| 113 | template <class _Tp> |
| 114 | struct __maybe_derive_from_binary_function<_Tp, false> |
| 115 | { |
| 116 | }; |
| 117 | |
| 118 | template <class _Tp, bool = __has_result_type<_Tp>::value> |
| 119 | struct __weak_result_type_imp // bool is true |
| 120 | : public __maybe_derive_from_unary_function<_Tp>, |
| 121 | public __maybe_derive_from_binary_function<_Tp> |
| 122 | { |
| 123 | typedef typename _Tp::result_type result_type; |
| 124 | }; |
| 125 | |
| 126 | template <class _Tp> |
| 127 | struct __weak_result_type_imp<_Tp, false> |
| 128 | : public __maybe_derive_from_unary_function<_Tp>, |
| 129 | public __maybe_derive_from_binary_function<_Tp> |
| 130 | { |
| 131 | }; |
| 132 | |
| 133 | template <class _Tp> |
| 134 | struct __weak_result_type |
| 135 | : public __weak_result_type_imp<_Tp> |
| 136 | { |
| 137 | }; |
| 138 | |
| 139 | // 0 argument case |
| 140 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 141 | template <class _Rp> |
| 142 | struct __weak_result_type<_Rp ()> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 143 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 144 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 145 | }; |
| 146 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 147 | template <class _Rp> |
| 148 | struct __weak_result_type<_Rp (&)()> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 149 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 150 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 151 | }; |
| 152 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 153 | template <class _Rp> |
| 154 | struct __weak_result_type<_Rp (*)()> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 155 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 156 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 157 | }; |
| 158 | |
| 159 | // 1 argument case |
| 160 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 161 | template <class _Rp, class _A1> |
| 162 | struct __weak_result_type<_Rp (_A1)> |
| 163 | : public unary_function<_A1, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 164 | { |
| 165 | }; |
| 166 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 167 | template <class _Rp, class _A1> |
| 168 | struct __weak_result_type<_Rp (&)(_A1)> |
| 169 | : public unary_function<_A1, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 170 | { |
| 171 | }; |
| 172 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 173 | template <class _Rp, class _A1> |
| 174 | struct __weak_result_type<_Rp (*)(_A1)> |
| 175 | : public unary_function<_A1, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 176 | { |
| 177 | }; |
| 178 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 179 | template <class _Rp, class _Cp> |
| 180 | struct __weak_result_type<_Rp (_Cp::*)()> |
| 181 | : public unary_function<_Cp*, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 182 | { |
| 183 | }; |
| 184 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 185 | template <class _Rp, class _Cp> |
| 186 | struct __weak_result_type<_Rp (_Cp::*)() const> |
| 187 | : public unary_function<const _Cp*, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 188 | { |
| 189 | }; |
| 190 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 191 | template <class _Rp, class _Cp> |
| 192 | struct __weak_result_type<_Rp (_Cp::*)() volatile> |
| 193 | : public unary_function<volatile _Cp*, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 194 | { |
| 195 | }; |
| 196 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 197 | template <class _Rp, class _Cp> |
| 198 | struct __weak_result_type<_Rp (_Cp::*)() const volatile> |
| 199 | : public unary_function<const volatile _Cp*, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 200 | { |
| 201 | }; |
| 202 | |
| 203 | // 2 argument case |
| 204 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 205 | template <class _Rp, class _A1, class _A2> |
| 206 | struct __weak_result_type<_Rp (_A1, _A2)> |
| 207 | : public binary_function<_A1, _A2, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 208 | { |
| 209 | }; |
| 210 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 211 | template <class _Rp, class _A1, class _A2> |
| 212 | struct __weak_result_type<_Rp (*)(_A1, _A2)> |
| 213 | : public binary_function<_A1, _A2, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 214 | { |
| 215 | }; |
| 216 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 217 | template <class _Rp, class _A1, class _A2> |
| 218 | struct __weak_result_type<_Rp (&)(_A1, _A2)> |
| 219 | : public binary_function<_A1, _A2, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 220 | { |
| 221 | }; |
| 222 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 223 | template <class _Rp, class _Cp, class _A1> |
| 224 | struct __weak_result_type<_Rp (_Cp::*)(_A1)> |
| 225 | : public binary_function<_Cp*, _A1, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 226 | { |
| 227 | }; |
| 228 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 229 | template <class _Rp, class _Cp, class _A1> |
| 230 | struct __weak_result_type<_Rp (_Cp::*)(_A1) const> |
| 231 | : public binary_function<const _Cp*, _A1, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 232 | { |
| 233 | }; |
| 234 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 235 | template <class _Rp, class _Cp, class _A1> |
| 236 | struct __weak_result_type<_Rp (_Cp::*)(_A1) volatile> |
| 237 | : public binary_function<volatile _Cp*, _A1, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 238 | { |
| 239 | }; |
| 240 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 241 | template <class _Rp, class _Cp, class _A1> |
| 242 | struct __weak_result_type<_Rp (_Cp::*)(_A1) const volatile> |
| 243 | : public binary_function<const volatile _Cp*, _A1, _Rp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 244 | { |
| 245 | }; |
| 246 | |
| 247 | // 3 or more arguments |
| 248 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 249 | template <class _Rp, class _A1, class _A2, class _A3, class ..._A4> |
| 250 | struct __weak_result_type<_Rp (_A1, _A2, _A3, _A4...)> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 251 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 252 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 253 | }; |
| 254 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 255 | template <class _Rp, class _A1, class _A2, class _A3, class ..._A4> |
| 256 | struct __weak_result_type<_Rp (&)(_A1, _A2, _A3, _A4...)> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 257 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 258 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 259 | }; |
| 260 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 261 | template <class _Rp, class _A1, class _A2, class _A3, class ..._A4> |
| 262 | struct __weak_result_type<_Rp (*)(_A1, _A2, _A3, _A4...)> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 263 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 264 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 265 | }; |
| 266 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 267 | template <class _Rp, class _Cp, class _A1, class _A2, class ..._A3> |
| 268 | struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2, _A3...)> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 269 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 270 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 271 | }; |
| 272 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 273 | template <class _Rp, class _Cp, class _A1, class _A2, class ..._A3> |
| 274 | struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2, _A3...) const> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 275 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 276 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 277 | }; |
| 278 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 279 | template <class _Rp, class _Cp, class _A1, class _A2, class ..._A3> |
| 280 | struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2, _A3...) volatile> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 281 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 282 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 283 | }; |
| 284 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 285 | template <class _Rp, class _Cp, class _A1, class _A2, class ..._A3> |
| 286 | struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2, _A3...) const volatile> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 287 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 288 | typedef _Rp result_type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 289 | }; |
| 290 | |
| 291 | // __invoke |
| 292 | |
Howard Hinnant | bd89e4b | 2011-05-20 22:02:53 +0000 | [diff] [blame] | 293 | // bullets 1 and 2 |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 294 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 295 | template <class _Fp, class _A0, class ..._Args> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 296 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bd89e4b | 2011-05-20 22:02:53 +0000 | [diff] [blame] | 297 | auto |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 298 | __invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args) |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 299 | -> decltype((_VSTD::forward<_A0>(__a0).*__f)(_VSTD::forward<_Args>(__args)...)) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 300 | { |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 301 | return (_VSTD::forward<_A0>(__a0).*__f)(_VSTD::forward<_Args>(__args)...); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 302 | } |
| 303 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 304 | template <class _Fp, class _A0, class ..._Args> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 305 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bd89e4b | 2011-05-20 22:02:53 +0000 | [diff] [blame] | 306 | auto |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 307 | __invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args) |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 308 | -> decltype(((*_VSTD::forward<_A0>(__a0)).*__f)(_VSTD::forward<_Args>(__args)...)) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 309 | { |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 310 | return ((*_VSTD::forward<_A0>(__a0)).*__f)(_VSTD::forward<_Args>(__args)...); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 311 | } |
| 312 | |
Howard Hinnant | bd89e4b | 2011-05-20 22:02:53 +0000 | [diff] [blame] | 313 | // bullets 3 and 4 |
| 314 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 315 | template <class _Fp, class _A0> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 316 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bd89e4b | 2011-05-20 22:02:53 +0000 | [diff] [blame] | 317 | auto |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 318 | __invoke(_Fp&& __f, _A0&& __a0) |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 319 | -> decltype(_VSTD::forward<_A0>(__a0).*__f) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 320 | { |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 321 | return _VSTD::forward<_A0>(__a0).*__f; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 322 | } |
| 323 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 324 | template <class _Fp, class _A0> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 325 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bd89e4b | 2011-05-20 22:02:53 +0000 | [diff] [blame] | 326 | auto |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 327 | __invoke(_Fp&& __f, _A0&& __a0) |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 328 | -> decltype((*_VSTD::forward<_A0>(__a0)).*__f) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 329 | { |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 330 | return (*_VSTD::forward<_A0>(__a0)).*__f; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 331 | } |
| 332 | |
Howard Hinnant | bd89e4b | 2011-05-20 22:02:53 +0000 | [diff] [blame] | 333 | // bullet 5 |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 334 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 335 | template <class _Fp, class ..._Args> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 336 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bd89e4b | 2011-05-20 22:02:53 +0000 | [diff] [blame] | 337 | auto |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 338 | __invoke(_Fp&& __f, _Args&& ...__args) |
| 339 | -> decltype(_VSTD::forward<_Fp>(__f)(_VSTD::forward<_Args>(__args)...)) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 340 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 341 | return _VSTD::forward<_Fp>(__f)(_VSTD::forward<_Args>(__args)...); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 342 | } |
| 343 | |
| 344 | template <class _Tp, class ..._Args> |
| 345 | struct __invoke_return |
| 346 | { |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 347 | typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_Args>()...)) type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 348 | }; |
| 349 | |
| 350 | template <class _Tp> |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 351 | class _LIBCPP_VISIBLE reference_wrapper |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 352 | : public __weak_result_type<_Tp> |
| 353 | { |
| 354 | public: |
| 355 | // types |
| 356 | typedef _Tp type; |
| 357 | private: |
| 358 | type* __f_; |
| 359 | |
| 360 | public: |
| 361 | // construct/copy/destroy |
Howard Hinnant | 603d2c0 | 2011-05-28 17:59:48 +0000 | [diff] [blame] | 362 | _LIBCPP_INLINE_VISIBILITY reference_wrapper(type& __f) _NOEXCEPT : __f_(&__f) {} |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame] | 363 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 364 | private: reference_wrapper(type&&); public: // = delete; // do not bind to temps |
| 365 | #endif |
| 366 | |
| 367 | // access |
Howard Hinnant | 603d2c0 | 2011-05-28 17:59:48 +0000 | [diff] [blame] | 368 | _LIBCPP_INLINE_VISIBILITY operator type& () const _NOEXCEPT {return *__f_;} |
| 369 | _LIBCPP_INLINE_VISIBILITY type& get() const _NOEXCEPT {return *__f_;} |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 370 | |
| 371 | // invoke |
| 372 | template <class... _ArgTypes> |
Howard Hinnant | 99acc50 | 2010-09-21 17:32:39 +0000 | [diff] [blame] | 373 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 57cff29 | 2011-05-19 15:05:04 +0000 | [diff] [blame] | 374 | typename __invoke_of<type&, _ArgTypes...>::type |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 375 | operator() (_ArgTypes&&... __args) const |
| 376 | { |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 377 | return __invoke(get(), _VSTD::forward<_ArgTypes>(__args)...); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 378 | } |
| 379 | }; |
| 380 | |
| 381 | template <class _Tp> struct ____is_reference_wrapper : public false_type {}; |
| 382 | template <class _Tp> struct ____is_reference_wrapper<reference_wrapper<_Tp> > : public true_type {}; |
| 383 | template <class _Tp> struct __is_reference_wrapper |
| 384 | : public ____is_reference_wrapper<typename remove_cv<_Tp>::type> {}; |
| 385 | |
| 386 | template <class _Tp> |
| 387 | inline _LIBCPP_INLINE_VISIBILITY |
| 388 | reference_wrapper<_Tp> |
Howard Hinnant | 603d2c0 | 2011-05-28 17:59:48 +0000 | [diff] [blame] | 389 | ref(_Tp& __t) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 390 | { |
| 391 | return reference_wrapper<_Tp>(__t); |
| 392 | } |
| 393 | |
| 394 | template <class _Tp> |
| 395 | inline _LIBCPP_INLINE_VISIBILITY |
| 396 | reference_wrapper<_Tp> |
Howard Hinnant | 603d2c0 | 2011-05-28 17:59:48 +0000 | [diff] [blame] | 397 | ref(reference_wrapper<_Tp> __t) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 398 | { |
| 399 | return ref(__t.get()); |
| 400 | } |
| 401 | |
| 402 | template <class _Tp> |
| 403 | inline _LIBCPP_INLINE_VISIBILITY |
| 404 | reference_wrapper<const _Tp> |
Howard Hinnant | 603d2c0 | 2011-05-28 17:59:48 +0000 | [diff] [blame] | 405 | cref(const _Tp& __t) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 406 | { |
| 407 | return reference_wrapper<const _Tp>(__t); |
| 408 | } |
| 409 | |
| 410 | template <class _Tp> |
| 411 | inline _LIBCPP_INLINE_VISIBILITY |
| 412 | reference_wrapper<const _Tp> |
Howard Hinnant | 603d2c0 | 2011-05-28 17:59:48 +0000 | [diff] [blame] | 413 | cref(reference_wrapper<_Tp> __t) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 414 | { |
| 415 | return cref(__t.get()); |
| 416 | } |
| 417 | |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame] | 418 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 419 | #ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS |
| 420 | |
Howard Hinnant | ec3773c | 2011-12-01 20:21:04 +0000 | [diff] [blame] | 421 | template <class _Tp> void ref(const _Tp&&) = delete; |
| 422 | template <class _Tp> void cref(const _Tp&&) = delete; |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame] | 423 | |
| 424 | #else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS |
| 425 | |
Howard Hinnant | ec3773c | 2011-12-01 20:21:04 +0000 | [diff] [blame] | 426 | template <class _Tp> void ref(const _Tp&&);// = delete; |
| 427 | template <class _Tp> void cref(const _Tp&&);// = delete; |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame] | 428 | |
| 429 | #endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS |
| 430 | |
| 431 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 432 | |
| 433 | #endif // _LIBCPP_HAS_NO_VARIADICS |
| 434 | |
| 435 | _LIBCPP_END_NAMESPACE_STD |
| 436 | |
| 437 | #endif // _LIBCPP_FUNCTIONAL_BASE |