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_03 |
| 12 | #define _LIBCPP_FUNCTIONAL_BASE_03 |
| 13 | |
| 14 | // manual variadic expansion for <functional> |
| 15 | |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 16 | // __invoke |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 17 | |
| 18 | template <class _Ret, class _T1, bool _IsFunc, bool _IsBase> |
| 19 | struct __enable_invoke_imp; |
| 20 | |
| 21 | template <class _Ret, class _T1> |
| 22 | struct __enable_invoke_imp<_Ret, _T1, true, true> { |
| 23 | typedef _Ret _Bullet1; |
| 24 | typedef _Bullet1 type; |
| 25 | }; |
| 26 | |
| 27 | template <class _Ret, class _T1> |
| 28 | struct __enable_invoke_imp<_Ret, _T1, true, false> { |
| 29 | typedef _Ret _Bullet2; |
| 30 | typedef _Bullet2 type; |
| 31 | }; |
| 32 | |
| 33 | template <class _Ret, class _T1> |
| 34 | struct __enable_invoke_imp<_Ret, _T1, false, true> { |
| 35 | typedef typename add_lvalue_reference< |
| 36 | typename __apply_cv<_T1, _Ret>::type |
| 37 | >::type _Bullet3; |
| 38 | typedef _Bullet3 type; |
| 39 | }; |
| 40 | |
| 41 | template <class _Ret, class _T1> |
| 42 | struct __enable_invoke_imp<_Ret, _T1, false, false> { |
| 43 | typedef typename add_lvalue_reference< |
| 44 | typename __apply_cv<decltype(*_VSTD::declval<_T1>()), _Ret>::type |
| 45 | >::type _Bullet4; |
| 46 | typedef _Bullet4 type; |
| 47 | }; |
| 48 | |
| 49 | template <class _Ret, class _T1> |
| 50 | struct __enable_invoke_imp<_Ret, _T1*, false, false> { |
| 51 | typedef typename add_lvalue_reference< |
| 52 | typename __apply_cv<_T1, _Ret>::type |
| 53 | >::type _Bullet4; |
| 54 | typedef _Bullet4 type; |
| 55 | }; |
| 56 | |
| 57 | template <class _Fn, class _T1, |
| 58 | class _Traits = __member_pointer_traits<_Fn>, |
| 59 | class _Ret = typename _Traits::_ReturnType, |
| 60 | class _Class = typename _Traits::_ClassType> |
| 61 | struct __enable_invoke : __enable_invoke_imp< |
| 62 | _Ret, _T1, |
| 63 | is_member_function_pointer<_Fn>::value, |
| 64 | is_base_of<_Class, typename remove_reference<_T1>::type>::value> |
| 65 | { |
| 66 | }; |
| 67 | |
| 68 | __nat __invoke(__any, ...); |
| 69 | |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 70 | // first bullet |
| 71 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 72 | template <class _Fn, class _T1> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 73 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 74 | typename __enable_invoke<_Fn, _T1>::_Bullet1 |
| 75 | __invoke(_Fn __f, _T1& __t1) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 76 | return (__t1.*__f)(); |
| 77 | } |
| 78 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 79 | template <class _Fn, class _T1, class _A0> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 80 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 81 | typename __enable_invoke<_Fn, _T1>::_Bullet1 |
| 82 | __invoke(_Fn __f, _T1& __t1, _A0& __a0) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 83 | return (__t1.*__f)(__a0); |
| 84 | } |
| 85 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 86 | template <class _Fn, class _T1, class _A0, class _A1> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 87 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 88 | typename __enable_invoke<_Fn, _T1>::_Bullet1 |
| 89 | __invoke(_Fn __f, _T1& __t1, _A0& __a0, _A1& __a1) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 90 | return (__t1.*__f)(__a0, __a1); |
| 91 | } |
| 92 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 93 | template <class _Fn, class _T1, class _A0, class _A1, class _A2> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 94 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 95 | typename __enable_invoke<_Fn, _T1>::_Bullet1 |
| 96 | __invoke(_Fn __f, _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 97 | return (__t1.*__f)(__a0, __a1, __a2); |
| 98 | } |
| 99 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 100 | template <class _Fn, class _T1> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 101 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 102 | typename __enable_invoke<_Fn, _T1>::_Bullet2 |
| 103 | __invoke(_Fn __f, _T1& __t1) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 104 | return ((*__t1).*__f)(); |
| 105 | } |
| 106 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 107 | template <class _Fn, class _T1, class _A0> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 108 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 109 | typename __enable_invoke<_Fn, _T1>::_Bullet2 |
| 110 | __invoke(_Fn __f, _T1& __t1, _A0& __a0) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 111 | return ((*__t1).*__f)(__a0); |
| 112 | } |
| 113 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 114 | template <class _Fn, class _T1, class _A0, class _A1> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 115 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 116 | typename __enable_invoke<_Fn, _T1>::_Bullet2 |
| 117 | __invoke(_Fn __f, _T1& __t1, _A0& __a0, _A1& __a1) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 118 | return ((*__t1).*__f)(__a0, __a1); |
| 119 | } |
| 120 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 121 | template <class _Fn, class _T1, class _A0, class _A1, class _A2> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 122 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 123 | typename __enable_invoke<_Fn, _T1>::_Bullet2 |
| 124 | __invoke(_Fn __f, _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 125 | return ((*__t1).*__f)(__a0, __a1, __a2); |
| 126 | } |
| 127 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 128 | template <class _Fn, class _T1> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 129 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 130 | typename __enable_invoke<_Fn, _T1>::_Bullet3 |
| 131 | __invoke(_Fn __f, _T1& __t1) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 132 | return __t1.*__f; |
| 133 | } |
| 134 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 135 | template <class _Fn, class _T1> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 136 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 137 | typename __enable_invoke<_Fn, _T1>::_Bullet4 |
| 138 | __invoke(_Fn __f, _T1& __t1) { |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 139 | return (*__t1).*__f; |
| 140 | } |
| 141 | |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 142 | // fifth bullet |
| 143 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 144 | template <class _Fp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 145 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | 12ddf2c | 2015-07-28 01:52:08 +0000 | [diff] [blame] | 146 | decltype(_VSTD::declval<_Fp&>()()) |
| 147 | __invoke(_Fp& __f) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 148 | { |
| 149 | return __f(); |
| 150 | } |
| 151 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 152 | template <class _Fp, class _A0> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 153 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | 12ddf2c | 2015-07-28 01:52:08 +0000 | [diff] [blame] | 154 | decltype(_VSTD::declval<_Fp&>()(_VSTD::declval<_A0&>())) |
| 155 | __invoke(_Fp& __f, _A0& __a0) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 156 | { |
| 157 | return __f(__a0); |
| 158 | } |
| 159 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 160 | template <class _Fp, class _A0, class _A1> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 161 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | 12ddf2c | 2015-07-28 01:52:08 +0000 | [diff] [blame] | 162 | decltype(_VSTD::declval<_Fp&>()(_VSTD::declval<_A0&>(), _VSTD::declval<_A1&>())) |
| 163 | __invoke(_Fp& __f, _A0& __a0, _A1& __a1) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 164 | { |
| 165 | return __f(__a0, __a1); |
| 166 | } |
| 167 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 168 | template <class _Fp, class _A0, class _A1, class _A2> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 169 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | 12ddf2c | 2015-07-28 01:52:08 +0000 | [diff] [blame] | 170 | decltype(_VSTD::declval<_Fp&>()(_VSTD::declval<_A0&>(), _VSTD::declval<_A1&>(), _VSTD::declval<_A2&>())) |
| 171 | __invoke(_Fp& __f, _A0& __a0, _A1& __a1, _A2& __a2) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 172 | { |
| 173 | return __f(__a0, __a1, __a2); |
| 174 | } |
| 175 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 176 | template <class _Fp, bool = __has_result_type<__weak_result_type<_Fp> >::value> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 177 | struct __invoke_return |
| 178 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 179 | typedef typename __weak_result_type<_Fp>::result_type type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 180 | }; |
| 181 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 182 | template <class _Fp> |
| 183 | struct __invoke_return<_Fp, false> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 184 | { |
Eric Fiselier | 12ddf2c | 2015-07-28 01:52:08 +0000 | [diff] [blame] | 185 | typedef decltype(__invoke(_VSTD::declval<_Fp&>())) type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 186 | }; |
| 187 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 188 | template <class _Tp, class _A0> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 189 | struct __invoke_return0 |
| 190 | { |
Eric Fiselier | 12ddf2c | 2015-07-28 01:52:08 +0000 | [diff] [blame] | 191 | typedef decltype(__invoke(_VSTD::declval<_Tp&>(), _VSTD::declval<_A0&>())) type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 192 | }; |
| 193 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 194 | template <class _Rp, class _Tp, class _A0> |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 195 | struct __invoke_return0<_Rp _Tp::*, _A0> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 196 | { |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 197 | typedef typename __enable_invoke<_Rp _Tp::*, _A0>::type type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 198 | }; |
| 199 | |
| 200 | template <class _Tp, class _A0, class _A1> |
| 201 | struct __invoke_return1 |
| 202 | { |
Eric Fiselier | 12ddf2c | 2015-07-28 01:52:08 +0000 | [diff] [blame] | 203 | typedef decltype(__invoke(_VSTD::declval<_Tp&>(), _VSTD::declval<_A0&>(), |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 204 | _VSTD::declval<_A1&>())) type; |
| 205 | }; |
| 206 | |
| 207 | template <class _Rp, class _Class, class _A0, class _A1> |
| 208 | struct __invoke_return1<_Rp _Class::*, _A0, _A1> { |
| 209 | typedef typename __enable_invoke<_Rp _Class::*, _A0>::type type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 210 | }; |
| 211 | |
| 212 | template <class _Tp, class _A0, class _A1, class _A2> |
| 213 | struct __invoke_return2 |
| 214 | { |
Eric Fiselier | 12ddf2c | 2015-07-28 01:52:08 +0000 | [diff] [blame] | 215 | typedef decltype(__invoke(_VSTD::declval<_Tp&>(), _VSTD::declval<_A0&>(), |
| 216 | _VSTD::declval<_A1&>(), |
| 217 | _VSTD::declval<_A2&>())) type; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 218 | }; |
| 219 | |
Eric Fiselier | f1626ad | 2015-08-26 20:15:02 +0000 | [diff] [blame^] | 220 | template <class _Ret, class _Class, class _A0, class _A1, class _A2> |
| 221 | struct __invoke_return2<_Ret _Class::*, _A0, _A1, _A2> { |
| 222 | typedef typename __enable_invoke<_Ret _Class::*, _A0>::type type; |
| 223 | }; |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 224 | #endif // _LIBCPP_FUNCTIONAL_BASE_03 |