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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 * | 6 * |
7 * | 7 * |
8 * This header provides some of the helpers (std::integral_constant) and | 8 * This header provides some of the helpers (std::integral_constant) and |
9 * type transformations (std::conditional) which will become available with | 9 * type transformations (std::conditional) which will become available with |
10 * C++11 in the type_traits header. | 10 * C++11 in the type_traits header. |
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116 // The cv and ref-qualified versions are strange types we're currently avoiding,
so not supported. | 116 // The cv and ref-qualified versions are strange types we're currently avoiding,
so not supported. |
117 // On all platforms, variadic functions only exist in the c calling convention. | 117 // On all platforms, variadic functions only exist in the c calling convention. |
118 template <typename> struct is_function : false_type { }; | 118 template <typename> struct is_function : false_type { }; |
119 #if !defined(SK_BUILD_FOR_WIN) | 119 #if !defined(SK_BUILD_FOR_WIN) |
120 template <typename R, typename... Args> struct is_function<R(Args...)> : true_ty
pe {}; | 120 template <typename R, typename... Args> struct is_function<R(Args...)> : true_ty
pe {}; |
121 #else | 121 #else |
122 #if defined(_M_IX86) | 122 #if defined(_M_IX86) |
123 template <typename R, typename... Args> struct is_function<R __cdecl (Args...)>
: true_type {}; | 123 template <typename R, typename... Args> struct is_function<R __cdecl (Args...)>
: true_type {}; |
124 template <typename R, typename... Args> struct is_function<R __stdcall (Args...)
> : true_type {}; | 124 template <typename R, typename... Args> struct is_function<R __stdcall (Args...)
> : true_type {}; |
125 template <typename R, typename... Args> struct is_function<R __fastcall (Args...
)> : true_type {}; | 125 template <typename R, typename... Args> struct is_function<R __fastcall (Args...
)> : true_type {}; |
| 126 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 |
126 template <typename R, typename... Args> struct is_function<R __vectorcall (Args.
..)> : true_type {}; | 127 template <typename R, typename... Args> struct is_function<R __vectorcall (Args.
..)> : true_type {}; |
| 128 #endif |
127 #else | 129 #else |
128 template <typename R, typename... Args> struct is_function<R __cdecl (Args...)>
: true_type {}; | 130 template <typename R, typename... Args> struct is_function<R __cdecl (Args...)>
: true_type {}; |
129 template <typename R, typename... Args> struct is_function<R __vectorcall (Args.
..)> : true_type {}; | 131 template <typename R, typename... Args> struct is_function<R __vectorcall (Args.
..)> : true_type {}; |
130 #endif | 132 #endif |
131 #endif | 133 #endif |
132 template <typename R, typename... Args> struct is_function<R(Args..., ...)> : tr
ue_type {}; | 134 template <typename R, typename... Args> struct is_function<R(Args..., ...)> : tr
ue_type {}; |
133 | 135 |
134 template <typename T> struct add_const { using type = const T; }; | 136 template <typename T> struct add_const { using type = const T; }; |
135 template <typename T> using add_const_t = typename add_const<T>::type; | 137 template <typename T> using add_const_t = typename add_const<T>::type; |
136 | 138 |
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217 template <typename D, typename S> using same_volatile_t = typename same_volatile
<D, S>::type; | 219 template <typename D, typename S> using same_volatile_t = typename same_volatile
<D, S>::type; |
218 template <typename D, typename S> using same_cv = copy_cv<skstd::remove_cv_t<D>,
S>; | 220 template <typename D, typename S> using same_cv = copy_cv<skstd::remove_cv_t<D>,
S>; |
219 template <typename D, typename S> using same_cv_t = typename same_cv<D, S>::type
; | 221 template <typename D, typename S> using same_cv_t = typename same_cv<D, S>::type
; |
220 | 222 |
221 } // namespace sknonstd | 223 } // namespace sknonstd |
222 | 224 |
223 // Just a pithier wrapper for enable_if_t. | 225 // Just a pithier wrapper for enable_if_t. |
224 #define SK_WHEN(condition, T) skstd::enable_if_t<!!(condition), T> | 226 #define SK_WHEN(condition, T) skstd::enable_if_t<!!(condition), T> |
225 | 227 |
226 #endif | 228 #endif |
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