1 | // -*- C++ -*- |
2 | //===----------------------------------------------------------------------===// |
3 | // |
4 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
5 | // See https://llvm.org/LICENSE.txt for license information. |
6 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
7 | // |
8 | //===----------------------------------------------------------------------===// |
9 | |
10 | #ifndef _LIBCPP___FUNCTIONAL_FUNCTION_H |
11 | #define _LIBCPP___FUNCTIONAL_FUNCTION_H |
12 | |
13 | #include <__assert> |
14 | #include <__config> |
15 | #include <__functional/binary_function.h> |
16 | #include <__functional/invoke.h> |
17 | #include <__functional/unary_function.h> |
18 | #include <__iterator/iterator_traits.h> |
19 | #include <__memory/addressof.h> |
20 | #include <__memory/allocator_traits.h> |
21 | #include <__memory/compressed_pair.h> |
22 | #include <__memory/shared_ptr.h> |
23 | #include <__utility/forward.h> |
24 | #include <__utility/move.h> |
25 | #include <__utility/swap.h> |
26 | #include <exception> |
27 | #include <memory> // TODO: replace with <__memory/__builtin_new_allocator.h> |
28 | #include <type_traits> |
29 | |
30 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
31 | # pragma GCC system_header |
32 | #endif |
33 | |
34 | _LIBCPP_BEGIN_NAMESPACE_STD |
35 | |
36 | // bad_function_call |
37 | |
38 | _LIBCPP_DIAGNOSTIC_PUSH |
39 | _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wweak-vtables" ) |
40 | class _LIBCPP_EXCEPTION_ABI bad_function_call |
41 | : public exception |
42 | { |
43 | public: |
44 | // Note that when a key function is not used, every translation unit that uses |
45 | // bad_function_call will end up containing a weak definition of the vtable and |
46 | // typeinfo. |
47 | #ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION |
48 | virtual ~bad_function_call() _NOEXCEPT; |
49 | #else |
50 | virtual ~bad_function_call() _NOEXCEPT {} |
51 | #endif |
52 | |
53 | #ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_GOOD_WHAT_MESSAGE |
54 | virtual const char* what() const _NOEXCEPT; |
55 | #endif |
56 | }; |
57 | _LIBCPP_DIAGNOSTIC_POP |
58 | |
59 | _LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY |
60 | void __throw_bad_function_call() |
61 | { |
62 | #ifndef _LIBCPP_NO_EXCEPTIONS |
63 | throw bad_function_call(); |
64 | #else |
65 | _VSTD::abort(); |
66 | #endif |
67 | } |
68 | |
69 | #if defined(_LIBCPP_CXX03_LANG) && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS) && __has_attribute(deprecated) |
70 | # define _LIBCPP_DEPRECATED_CXX03_FUNCTION \ |
71 | __attribute__((deprecated("Using std::function in C++03 is not supported anymore. Please upgrade to C++11 or later, or use a different type"))) |
72 | #else |
73 | # define _LIBCPP_DEPRECATED_CXX03_FUNCTION /* nothing */ |
74 | #endif |
75 | |
76 | template<class _Fp> class _LIBCPP_DEPRECATED_CXX03_FUNCTION _LIBCPP_TEMPLATE_VIS function; // undefined |
77 | |
78 | namespace __function |
79 | { |
80 | |
81 | template<class _Rp> |
82 | struct __maybe_derive_from_unary_function |
83 | { |
84 | }; |
85 | |
86 | template<class _Rp, class _A1> |
87 | struct __maybe_derive_from_unary_function<_Rp(_A1)> |
88 | : public __unary_function<_A1, _Rp> |
89 | { |
90 | }; |
91 | |
92 | template<class _Rp> |
93 | struct __maybe_derive_from_binary_function |
94 | { |
95 | }; |
96 | |
97 | template<class _Rp, class _A1, class _A2> |
98 | struct __maybe_derive_from_binary_function<_Rp(_A1, _A2)> |
99 | : public __binary_function<_A1, _A2, _Rp> |
100 | { |
101 | }; |
102 | |
103 | template <class _Fp> |
104 | _LIBCPP_INLINE_VISIBILITY |
105 | bool __not_null(_Fp const&) { return true; } |
106 | |
107 | template <class _Fp> |
108 | _LIBCPP_INLINE_VISIBILITY |
109 | bool __not_null(_Fp* __ptr) { return __ptr; } |
110 | |
111 | template <class _Ret, class _Class> |
112 | _LIBCPP_INLINE_VISIBILITY |
113 | bool __not_null(_Ret _Class::*__ptr) { return __ptr; } |
114 | |
115 | template <class _Fp> |
116 | _LIBCPP_INLINE_VISIBILITY |
117 | bool __not_null(function<_Fp> const& __f) { return !!__f; } |
118 | |
119 | #ifdef _LIBCPP_HAS_EXTENSION_BLOCKS |
120 | template <class _Rp, class ..._Args> |
121 | _LIBCPP_INLINE_VISIBILITY |
122 | bool __not_null(_Rp (^__p)(_Args...)) { return __p; } |
123 | #endif |
124 | |
125 | } // namespace __function |
126 | |
127 | #ifndef _LIBCPP_CXX03_LANG |
128 | |
129 | namespace __function { |
130 | |
131 | // __alloc_func holds a functor and an allocator. |
132 | |
133 | template <class _Fp, class _Ap, class _FB> class __alloc_func; |
134 | template <class _Fp, class _FB> |
135 | class __default_alloc_func; |
136 | |
137 | template <class _Fp, class _Ap, class _Rp, class... _ArgTypes> |
138 | class __alloc_func<_Fp, _Ap, _Rp(_ArgTypes...)> |
139 | { |
140 | __compressed_pair<_Fp, _Ap> __f_; |
141 | |
142 | public: |
143 | typedef _LIBCPP_NODEBUG _Fp _Target; |
144 | typedef _LIBCPP_NODEBUG _Ap _Alloc; |
145 | |
146 | _LIBCPP_INLINE_VISIBILITY |
147 | const _Target& __target() const { return __f_.first(); } |
148 | |
149 | // WIN32 APIs may define __allocator, so use __get_allocator instead. |
150 | _LIBCPP_INLINE_VISIBILITY |
151 | const _Alloc& __get_allocator() const { return __f_.second(); } |
152 | |
153 | _LIBCPP_INLINE_VISIBILITY |
154 | explicit __alloc_func(_Target&& __f) |
155 | : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), |
156 | _VSTD::forward_as_tuple()) |
157 | { |
158 | } |
159 | |
160 | _LIBCPP_INLINE_VISIBILITY |
161 | explicit __alloc_func(const _Target& __f, const _Alloc& __a) |
162 | : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), |
163 | _VSTD::forward_as_tuple(__a)) |
164 | { |
165 | } |
166 | |
167 | _LIBCPP_INLINE_VISIBILITY |
168 | explicit __alloc_func(const _Target& __f, _Alloc&& __a) |
169 | : __f_(piecewise_construct, _VSTD::forward_as_tuple(__f), |
170 | _VSTD::forward_as_tuple(_VSTD::move(__a))) |
171 | { |
172 | } |
173 | |
174 | _LIBCPP_INLINE_VISIBILITY |
175 | explicit __alloc_func(_Target&& __f, _Alloc&& __a) |
176 | : __f_(piecewise_construct, _VSTD::forward_as_tuple(_VSTD::move(__f)), |
177 | _VSTD::forward_as_tuple(_VSTD::move(__a))) |
178 | { |
179 | } |
180 | |
181 | _LIBCPP_INLINE_VISIBILITY |
182 | _Rp operator()(_ArgTypes&&... __arg) |
183 | { |
184 | typedef __invoke_void_return_wrapper<_Rp> _Invoker; |
185 | return _Invoker::__call(__f_.first(), |
186 | _VSTD::forward<_ArgTypes>(__arg)...); |
187 | } |
188 | |
189 | _LIBCPP_INLINE_VISIBILITY |
190 | __alloc_func* __clone() const |
191 | { |
192 | typedef allocator_traits<_Alloc> __alloc_traits; |
193 | typedef |
194 | typename __rebind_alloc_helper<__alloc_traits, __alloc_func>::type |
195 | _AA; |
196 | _AA __a(__f_.second()); |
197 | typedef __allocator_destructor<_AA> _Dp; |
198 | unique_ptr<__alloc_func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
199 | ::new ((void*)__hold.get()) __alloc_func(__f_.first(), _Alloc(__a)); |
200 | return __hold.release(); |
201 | } |
202 | |
203 | _LIBCPP_INLINE_VISIBILITY |
204 | void destroy() _NOEXCEPT { __f_.~__compressed_pair<_Target, _Alloc>(); } |
205 | |
206 | static void __destroy_and_delete(__alloc_func* __f) { |
207 | typedef allocator_traits<_Alloc> __alloc_traits; |
208 | typedef typename __rebind_alloc_helper<__alloc_traits, __alloc_func>::type |
209 | _FunAlloc; |
210 | _FunAlloc __a(__f->__get_allocator()); |
211 | __f->destroy(); |
212 | __a.deallocate(__f, 1); |
213 | } |
214 | }; |
215 | |
216 | template <class _Fp, class _Rp, class... _ArgTypes> |
217 | class __default_alloc_func<_Fp, _Rp(_ArgTypes...)> { |
218 | _Fp __f_; |
219 | |
220 | public: |
221 | typedef _LIBCPP_NODEBUG _Fp _Target; |
222 | |
223 | _LIBCPP_INLINE_VISIBILITY |
224 | const _Target& __target() const { return __f_; } |
225 | |
226 | _LIBCPP_INLINE_VISIBILITY |
227 | explicit __default_alloc_func(_Target&& __f) : __f_(_VSTD::move(__f)) {} |
228 | |
229 | _LIBCPP_INLINE_VISIBILITY |
230 | explicit __default_alloc_func(const _Target& __f) : __f_(__f) {} |
231 | |
232 | _LIBCPP_INLINE_VISIBILITY |
233 | _Rp operator()(_ArgTypes&&... __arg) { |
234 | typedef __invoke_void_return_wrapper<_Rp> _Invoker; |
235 | return _Invoker::__call(__f_, _VSTD::forward<_ArgTypes>(__arg)...); |
236 | } |
237 | |
238 | _LIBCPP_INLINE_VISIBILITY |
239 | __default_alloc_func* __clone() const { |
240 | __builtin_new_allocator::__holder_t __hold = |
241 | __builtin_new_allocator::__allocate_type<__default_alloc_func>(1); |
242 | __default_alloc_func* __res = |
243 | ::new ((void*)__hold.get()) __default_alloc_func(__f_); |
244 | (void)__hold.release(); |
245 | return __res; |
246 | } |
247 | |
248 | _LIBCPP_INLINE_VISIBILITY |
249 | void destroy() _NOEXCEPT { __f_.~_Target(); } |
250 | |
251 | static void __destroy_and_delete(__default_alloc_func* __f) { |
252 | __f->destroy(); |
253 | __builtin_new_allocator::__deallocate_type<__default_alloc_func>(__f, 1); |
254 | } |
255 | }; |
256 | |
257 | // __base provides an abstract interface for copyable functors. |
258 | |
259 | template<class _Fp> class _LIBCPP_TEMPLATE_VIS __base; |
260 | |
261 | template<class _Rp, class ..._ArgTypes> |
262 | class __base<_Rp(_ArgTypes...)> |
263 | { |
264 | __base(const __base&); |
265 | __base& operator=(const __base&); |
266 | public: |
267 | _LIBCPP_INLINE_VISIBILITY __base() {} |
268 | _LIBCPP_INLINE_VISIBILITY virtual ~__base() {} |
269 | virtual __base* __clone() const = 0; |
270 | virtual void __clone(__base*) const = 0; |
271 | virtual void destroy() _NOEXCEPT = 0; |
272 | virtual void destroy_deallocate() _NOEXCEPT = 0; |
273 | virtual _Rp operator()(_ArgTypes&& ...) = 0; |
274 | #ifndef _LIBCPP_NO_RTTI |
275 | virtual const void* target(const type_info&) const _NOEXCEPT = 0; |
276 | virtual const std::type_info& target_type() const _NOEXCEPT = 0; |
277 | #endif // _LIBCPP_NO_RTTI |
278 | }; |
279 | |
280 | // __func implements __base for a given functor type. |
281 | |
282 | template<class _FD, class _Alloc, class _FB> class __func; |
283 | |
284 | template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> |
285 | class __func<_Fp, _Alloc, _Rp(_ArgTypes...)> |
286 | : public __base<_Rp(_ArgTypes...)> |
287 | { |
288 | __alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> __f_; |
289 | public: |
290 | _LIBCPP_INLINE_VISIBILITY |
291 | explicit __func(_Fp&& __f) |
292 | : __f_(_VSTD::move(__f)) {} |
293 | |
294 | _LIBCPP_INLINE_VISIBILITY |
295 | explicit __func(const _Fp& __f, const _Alloc& __a) |
296 | : __f_(__f, __a) {} |
297 | |
298 | _LIBCPP_INLINE_VISIBILITY |
299 | explicit __func(const _Fp& __f, _Alloc&& __a) |
300 | : __f_(__f, _VSTD::move(__a)) {} |
301 | |
302 | _LIBCPP_INLINE_VISIBILITY |
303 | explicit __func(_Fp&& __f, _Alloc&& __a) |
304 | : __f_(_VSTD::move(__f), _VSTD::move(__a)) {} |
305 | |
306 | virtual __base<_Rp(_ArgTypes...)>* __clone() const; |
307 | virtual void __clone(__base<_Rp(_ArgTypes...)>*) const; |
308 | virtual void destroy() _NOEXCEPT; |
309 | virtual void destroy_deallocate() _NOEXCEPT; |
310 | virtual _Rp operator()(_ArgTypes&&... __arg); |
311 | #ifndef _LIBCPP_NO_RTTI |
312 | virtual const void* target(const type_info&) const _NOEXCEPT; |
313 | virtual const std::type_info& target_type() const _NOEXCEPT; |
314 | #endif // _LIBCPP_NO_RTTI |
315 | }; |
316 | |
317 | template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> |
318 | __base<_Rp(_ArgTypes...)>* |
319 | __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone() const |
320 | { |
321 | typedef allocator_traits<_Alloc> __alloc_traits; |
322 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
323 | _Ap __a(__f_.__get_allocator()); |
324 | typedef __allocator_destructor<_Ap> _Dp; |
325 | unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
326 | ::new ((void*)__hold.get()) __func(__f_.__target(), _Alloc(__a)); |
327 | return __hold.release(); |
328 | } |
329 | |
330 | template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> |
331 | void |
332 | __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::__clone(__base<_Rp(_ArgTypes...)>* __p) const |
333 | { |
334 | ::new ((void*)__p) __func(__f_.__target(), __f_.__get_allocator()); |
335 | } |
336 | |
337 | template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> |
338 | void |
339 | __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy() _NOEXCEPT |
340 | { |
341 | __f_.destroy(); |
342 | } |
343 | |
344 | template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> |
345 | void |
346 | __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::destroy_deallocate() _NOEXCEPT |
347 | { |
348 | typedef allocator_traits<_Alloc> __alloc_traits; |
349 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
350 | _Ap __a(__f_.__get_allocator()); |
351 | __f_.destroy(); |
352 | __a.deallocate(this, 1); |
353 | } |
354 | |
355 | template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> |
356 | _Rp |
357 | __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::operator()(_ArgTypes&& ... __arg) |
358 | { |
359 | return __f_(_VSTD::forward<_ArgTypes>(__arg)...); |
360 | } |
361 | |
362 | #ifndef _LIBCPP_NO_RTTI |
363 | |
364 | template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> |
365 | const void* |
366 | __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target(const type_info& __ti) const _NOEXCEPT |
367 | { |
368 | if (__ti == typeid(_Fp)) |
369 | return _VSTD::addressof(__f_.__target()); |
370 | return nullptr; |
371 | } |
372 | |
373 | template<class _Fp, class _Alloc, class _Rp, class ..._ArgTypes> |
374 | const std::type_info& |
375 | __func<_Fp, _Alloc, _Rp(_ArgTypes...)>::target_type() const _NOEXCEPT |
376 | { |
377 | return typeid(_Fp); |
378 | } |
379 | |
380 | #endif // _LIBCPP_NO_RTTI |
381 | |
382 | // __value_func creates a value-type from a __func. |
383 | |
384 | template <class _Fp> class __value_func; |
385 | |
386 | template <class _Rp, class... _ArgTypes> class __value_func<_Rp(_ArgTypes...)> |
387 | { |
388 | typename aligned_storage<3 * sizeof(void*)>::type __buf_; |
389 | |
390 | typedef __base<_Rp(_ArgTypes...)> __func; |
391 | __func* __f_; |
392 | |
393 | _LIBCPP_NO_CFI static __func* __as_base(void* __p) |
394 | { |
395 | return reinterpret_cast<__func*>(__p); |
396 | } |
397 | |
398 | public: |
399 | _LIBCPP_INLINE_VISIBILITY |
400 | __value_func() _NOEXCEPT : __f_(nullptr) {} |
401 | |
402 | template <class _Fp, class _Alloc> |
403 | _LIBCPP_INLINE_VISIBILITY __value_func(_Fp&& __f, const _Alloc& __a) |
404 | : __f_(nullptr) |
405 | { |
406 | typedef allocator_traits<_Alloc> __alloc_traits; |
407 | typedef __function::__func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun; |
408 | typedef typename __rebind_alloc_helper<__alloc_traits, _Fun>::type |
409 | _FunAlloc; |
410 | |
411 | if (__function::__not_null(__f)) |
412 | { |
413 | _FunAlloc __af(__a); |
414 | if (sizeof(_Fun) <= sizeof(__buf_) && |
415 | is_nothrow_copy_constructible<_Fp>::value && |
416 | is_nothrow_copy_constructible<_FunAlloc>::value) |
417 | { |
418 | __f_ = |
419 | ::new ((void*)&__buf_) _Fun(_VSTD::move(__f), _Alloc(__af)); |
420 | } |
421 | else |
422 | { |
423 | typedef __allocator_destructor<_FunAlloc> _Dp; |
424 | unique_ptr<__func, _Dp> __hold(__af.allocate(1), _Dp(__af, 1)); |
425 | ::new ((void*)__hold.get()) _Fun(_VSTD::move(__f), _Alloc(__a)); |
426 | __f_ = __hold.release(); |
427 | } |
428 | } |
429 | } |
430 | |
431 | template <class _Fp, |
432 | class = typename enable_if<!is_same<typename decay<_Fp>::type, __value_func>::value>::type> |
433 | _LIBCPP_INLINE_VISIBILITY explicit __value_func(_Fp&& __f) |
434 | : __value_func(_VSTD::forward<_Fp>(__f), allocator<_Fp>()) {} |
435 | |
436 | _LIBCPP_INLINE_VISIBILITY |
437 | __value_func(const __value_func& __f) |
438 | { |
439 | if (__f.__f_ == nullptr) |
440 | __f_ = nullptr; |
441 | else if ((void*)__f.__f_ == &__f.__buf_) |
442 | { |
443 | __f_ = __as_base(p: &__buf_); |
444 | __f.__f_->__clone(__f_); |
445 | } |
446 | else |
447 | __f_ = __f.__f_->__clone(); |
448 | } |
449 | |
450 | _LIBCPP_INLINE_VISIBILITY |
451 | __value_func(__value_func&& __f) _NOEXCEPT |
452 | { |
453 | if (__f.__f_ == nullptr) |
454 | __f_ = nullptr; |
455 | else if ((void*)__f.__f_ == &__f.__buf_) |
456 | { |
457 | __f_ = __as_base(p: &__buf_); |
458 | __f.__f_->__clone(__f_); |
459 | } |
460 | else |
461 | { |
462 | __f_ = __f.__f_; |
463 | __f.__f_ = nullptr; |
464 | } |
465 | } |
466 | |
467 | _LIBCPP_INLINE_VISIBILITY |
468 | ~__value_func() |
469 | { |
470 | if ((void*)__f_ == &__buf_) |
471 | __f_->destroy(); |
472 | else if (__f_) |
473 | __f_->destroy_deallocate(); |
474 | } |
475 | |
476 | _LIBCPP_INLINE_VISIBILITY |
477 | __value_func& operator=(__value_func&& __f) |
478 | { |
479 | *this = nullptr; |
480 | if (__f.__f_ == nullptr) |
481 | __f_ = nullptr; |
482 | else if ((void*)__f.__f_ == &__f.__buf_) |
483 | { |
484 | __f_ = __as_base(p: &__buf_); |
485 | __f.__f_->__clone(__f_); |
486 | } |
487 | else |
488 | { |
489 | __f_ = __f.__f_; |
490 | __f.__f_ = nullptr; |
491 | } |
492 | return *this; |
493 | } |
494 | |
495 | _LIBCPP_INLINE_VISIBILITY |
496 | __value_func& operator=(nullptr_t) |
497 | { |
498 | __func* __f = __f_; |
499 | __f_ = nullptr; |
500 | if ((void*)__f == &__buf_) |
501 | __f->destroy(); |
502 | else if (__f) |
503 | __f->destroy_deallocate(); |
504 | return *this; |
505 | } |
506 | |
507 | _LIBCPP_INLINE_VISIBILITY |
508 | _Rp operator()(_ArgTypes&&... __args) const |
509 | { |
510 | if (__f_ == nullptr) |
511 | __throw_bad_function_call(); |
512 | return (*__f_)(_VSTD::forward<_ArgTypes>(__args)...); |
513 | } |
514 | |
515 | _LIBCPP_INLINE_VISIBILITY |
516 | void swap(__value_func& __f) _NOEXCEPT |
517 | { |
518 | if (&__f == this) |
519 | return; |
520 | if ((void*)__f_ == &__buf_ && (void*)__f.__f_ == &__f.__buf_) |
521 | { |
522 | typename aligned_storage<sizeof(__buf_)>::type __tempbuf; |
523 | __func* __t = __as_base(p: &__tempbuf); |
524 | __f_->__clone(__t); |
525 | __f_->destroy(); |
526 | __f_ = nullptr; |
527 | __f.__f_->__clone(__as_base(p: &__buf_)); |
528 | __f.__f_->destroy(); |
529 | __f.__f_ = nullptr; |
530 | __f_ = __as_base(p: &__buf_); |
531 | __t->__clone(__as_base(p: &__f.__buf_)); |
532 | __t->destroy(); |
533 | __f.__f_ = __as_base(p: &__f.__buf_); |
534 | } |
535 | else if ((void*)__f_ == &__buf_) |
536 | { |
537 | __f_->__clone(__as_base(p: &__f.__buf_)); |
538 | __f_->destroy(); |
539 | __f_ = __f.__f_; |
540 | __f.__f_ = __as_base(p: &__f.__buf_); |
541 | } |
542 | else if ((void*)__f.__f_ == &__f.__buf_) |
543 | { |
544 | __f.__f_->__clone(__as_base(p: &__buf_)); |
545 | __f.__f_->destroy(); |
546 | __f.__f_ = __f_; |
547 | __f_ = __as_base(p: &__buf_); |
548 | } |
549 | else |
550 | _VSTD::swap(__f_, __f.__f_); |
551 | } |
552 | |
553 | _LIBCPP_INLINE_VISIBILITY |
554 | explicit operator bool() const _NOEXCEPT { return __f_ != nullptr; } |
555 | |
556 | #ifndef _LIBCPP_NO_RTTI |
557 | _LIBCPP_INLINE_VISIBILITY |
558 | const std::type_info& target_type() const _NOEXCEPT |
559 | { |
560 | if (__f_ == nullptr) |
561 | return typeid(void); |
562 | return __f_->target_type(); |
563 | } |
564 | |
565 | template <typename _Tp> |
566 | _LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT |
567 | { |
568 | if (__f_ == nullptr) |
569 | return nullptr; |
570 | return (const _Tp*)__f_->target(typeid(_Tp)); |
571 | } |
572 | #endif // _LIBCPP_NO_RTTI |
573 | }; |
574 | |
575 | // Storage for a functor object, to be used with __policy to manage copy and |
576 | // destruction. |
577 | union __policy_storage |
578 | { |
579 | mutable char __small[sizeof(void*) * 2]; |
580 | void* __large; |
581 | }; |
582 | |
583 | // True if _Fun can safely be held in __policy_storage.__small. |
584 | template <typename _Fun> |
585 | struct __use_small_storage |
586 | : public integral_constant< |
587 | bool, sizeof(_Fun) <= sizeof(__policy_storage) && |
588 | _LIBCPP_ALIGNOF(_Fun) <= _LIBCPP_ALIGNOF(__policy_storage) && |
589 | is_trivially_copy_constructible<_Fun>::value && |
590 | is_trivially_destructible<_Fun>::value> {}; |
591 | |
592 | // Policy contains information about how to copy, destroy, and move the |
593 | // underlying functor. You can think of it as a vtable of sorts. |
594 | struct __policy |
595 | { |
596 | // Used to copy or destroy __large values. null for trivial objects. |
597 | void* (*const __clone)(const void*); |
598 | void (*const __destroy)(void*); |
599 | |
600 | // True if this is the null policy (no value). |
601 | const bool __is_null; |
602 | |
603 | // The target type. May be null if RTTI is disabled. |
604 | const std::type_info* const __type_info; |
605 | |
606 | // Returns a pointer to a static policy object suitable for the functor |
607 | // type. |
608 | template <typename _Fun> |
609 | _LIBCPP_INLINE_VISIBILITY static const __policy* __create() |
610 | { |
611 | return __choose_policy<_Fun>(__use_small_storage<_Fun>()); |
612 | } |
613 | |
614 | _LIBCPP_INLINE_VISIBILITY |
615 | static const __policy* __create_empty() |
616 | { |
617 | static const _LIBCPP_CONSTEXPR __policy __policy_ = {nullptr, nullptr, |
618 | true, |
619 | #ifndef _LIBCPP_NO_RTTI |
620 | &typeid(void) |
621 | #else |
622 | nullptr |
623 | #endif |
624 | }; |
625 | return &__policy_; |
626 | } |
627 | |
628 | private: |
629 | template <typename _Fun> static void* __large_clone(const void* __s) |
630 | { |
631 | const _Fun* __f = static_cast<const _Fun*>(__s); |
632 | return __f->__clone(); |
633 | } |
634 | |
635 | template <typename _Fun> |
636 | static void __large_destroy(void* __s) { |
637 | _Fun::__destroy_and_delete(static_cast<_Fun*>(__s)); |
638 | } |
639 | |
640 | template <typename _Fun> |
641 | _LIBCPP_INLINE_VISIBILITY static const __policy* |
642 | __choose_policy(/* is_small = */ false_type) { |
643 | static const _LIBCPP_CONSTEXPR __policy __policy_ = { |
644 | &__large_clone<_Fun>, &__large_destroy<_Fun>, false, |
645 | #ifndef _LIBCPP_NO_RTTI |
646 | &typeid(typename _Fun::_Target) |
647 | #else |
648 | nullptr |
649 | #endif |
650 | }; |
651 | return &__policy_; |
652 | } |
653 | |
654 | template <typename _Fun> |
655 | _LIBCPP_INLINE_VISIBILITY static const __policy* |
656 | __choose_policy(/* is_small = */ true_type) |
657 | { |
658 | static const _LIBCPP_CONSTEXPR __policy __policy_ = { |
659 | nullptr, nullptr, false, |
660 | #ifndef _LIBCPP_NO_RTTI |
661 | &typeid(typename _Fun::_Target) |
662 | #else |
663 | nullptr |
664 | #endif |
665 | }; |
666 | return &__policy_; |
667 | } |
668 | }; |
669 | |
670 | // Used to choose between perfect forwarding or pass-by-value. Pass-by-value is |
671 | // faster for types that can be passed in registers. |
672 | template <typename _Tp> |
673 | using __fast_forward = |
674 | typename conditional<is_scalar<_Tp>::value, _Tp, _Tp&&>::type; |
675 | |
676 | // __policy_invoker calls an instance of __alloc_func held in __policy_storage. |
677 | |
678 | template <class _Fp> struct __policy_invoker; |
679 | |
680 | template <class _Rp, class... _ArgTypes> |
681 | struct __policy_invoker<_Rp(_ArgTypes...)> |
682 | { |
683 | typedef _Rp (*__Call)(const __policy_storage*, |
684 | __fast_forward<_ArgTypes>...); |
685 | |
686 | __Call __call_; |
687 | |
688 | // Creates an invoker that throws bad_function_call. |
689 | _LIBCPP_INLINE_VISIBILITY |
690 | __policy_invoker() : __call_(&__call_empty) {} |
691 | |
692 | // Creates an invoker that calls the given instance of __func. |
693 | template <typename _Fun> |
694 | _LIBCPP_INLINE_VISIBILITY static __policy_invoker __create() |
695 | { |
696 | return __policy_invoker(&__call_impl<_Fun>); |
697 | } |
698 | |
699 | private: |
700 | _LIBCPP_INLINE_VISIBILITY |
701 | explicit __policy_invoker(__Call __c) : __call_(__c) {} |
702 | |
703 | static _Rp __call_empty(const __policy_storage*, |
704 | __fast_forward<_ArgTypes>...) |
705 | { |
706 | __throw_bad_function_call(); |
707 | } |
708 | |
709 | template <typename _Fun> |
710 | static _Rp __call_impl(const __policy_storage* __buf, |
711 | __fast_forward<_ArgTypes>... __args) |
712 | { |
713 | _Fun* __f = reinterpret_cast<_Fun*>(__use_small_storage<_Fun>::value |
714 | ? &__buf->__small |
715 | : __buf->__large); |
716 | return (*__f)(_VSTD::forward<_ArgTypes>(__args)...); |
717 | } |
718 | }; |
719 | |
720 | // __policy_func uses a __policy and __policy_invoker to create a type-erased, |
721 | // copyable functor. |
722 | |
723 | template <class _Fp> class __policy_func; |
724 | |
725 | template <class _Rp, class... _ArgTypes> class __policy_func<_Rp(_ArgTypes...)> |
726 | { |
727 | // Inline storage for small objects. |
728 | __policy_storage __buf_; |
729 | |
730 | // Calls the value stored in __buf_. This could technically be part of |
731 | // policy, but storing it here eliminates a level of indirection inside |
732 | // operator(). |
733 | typedef __function::__policy_invoker<_Rp(_ArgTypes...)> __invoker; |
734 | __invoker __invoker_; |
735 | |
736 | // The policy that describes how to move / copy / destroy __buf_. Never |
737 | // null, even if the function is empty. |
738 | const __policy* __policy_; |
739 | |
740 | public: |
741 | _LIBCPP_INLINE_VISIBILITY |
742 | __policy_func() : __policy_(__policy::__create_empty()) {} |
743 | |
744 | template <class _Fp, class _Alloc> |
745 | _LIBCPP_INLINE_VISIBILITY __policy_func(_Fp&& __f, const _Alloc& __a) |
746 | : __policy_(__policy::__create_empty()) |
747 | { |
748 | typedef __alloc_func<_Fp, _Alloc, _Rp(_ArgTypes...)> _Fun; |
749 | typedef allocator_traits<_Alloc> __alloc_traits; |
750 | typedef typename __rebind_alloc_helper<__alloc_traits, _Fun>::type |
751 | _FunAlloc; |
752 | |
753 | if (__function::__not_null(__f)) |
754 | { |
755 | __invoker_ = __invoker::template __create<_Fun>(); |
756 | __policy_ = __policy::__create<_Fun>(); |
757 | |
758 | _FunAlloc __af(__a); |
759 | if (__use_small_storage<_Fun>()) |
760 | { |
761 | ::new ((void*)&__buf_.__small) |
762 | _Fun(_VSTD::move(__f), _Alloc(__af)); |
763 | } |
764 | else |
765 | { |
766 | typedef __allocator_destructor<_FunAlloc> _Dp; |
767 | unique_ptr<_Fun, _Dp> __hold(__af.allocate(1), _Dp(__af, 1)); |
768 | ::new ((void*)__hold.get()) |
769 | _Fun(_VSTD::move(__f), _Alloc(__af)); |
770 | __buf_.__large = __hold.release(); |
771 | } |
772 | } |
773 | } |
774 | |
775 | template <class _Fp, class = typename enable_if<!is_same<typename decay<_Fp>::type, __policy_func>::value>::type> |
776 | _LIBCPP_INLINE_VISIBILITY explicit __policy_func(_Fp&& __f) |
777 | : __policy_(__policy::__create_empty()) { |
778 | typedef __default_alloc_func<_Fp, _Rp(_ArgTypes...)> _Fun; |
779 | |
780 | if (__function::__not_null(__f)) { |
781 | __invoker_ = __invoker::template __create<_Fun>(); |
782 | __policy_ = __policy::__create<_Fun>(); |
783 | if (__use_small_storage<_Fun>()) { |
784 | ::new ((void*)&__buf_.__small) _Fun(_VSTD::move(__f)); |
785 | } else { |
786 | __builtin_new_allocator::__holder_t __hold = |
787 | __builtin_new_allocator::__allocate_type<_Fun>(1); |
788 | __buf_.__large = ::new ((void*)__hold.get()) _Fun(_VSTD::move(__f)); |
789 | (void)__hold.release(); |
790 | } |
791 | } |
792 | } |
793 | |
794 | _LIBCPP_INLINE_VISIBILITY |
795 | __policy_func(const __policy_func& __f) |
796 | : __buf_(__f.__buf_), __invoker_(__f.__invoker_), |
797 | __policy_(__f.__policy_) |
798 | { |
799 | if (__policy_->__clone) |
800 | __buf_.__large = __policy_->__clone(__f.__buf_.__large); |
801 | } |
802 | |
803 | _LIBCPP_INLINE_VISIBILITY |
804 | __policy_func(__policy_func&& __f) |
805 | : __buf_(__f.__buf_), __invoker_(__f.__invoker_), |
806 | __policy_(__f.__policy_) |
807 | { |
808 | if (__policy_->__destroy) |
809 | { |
810 | __f.__policy_ = __policy::__create_empty(); |
811 | __f.__invoker_ = __invoker(); |
812 | } |
813 | } |
814 | |
815 | _LIBCPP_INLINE_VISIBILITY |
816 | ~__policy_func() |
817 | { |
818 | if (__policy_->__destroy) |
819 | __policy_->__destroy(__buf_.__large); |
820 | } |
821 | |
822 | _LIBCPP_INLINE_VISIBILITY |
823 | __policy_func& operator=(__policy_func&& __f) |
824 | { |
825 | *this = nullptr; |
826 | __buf_ = __f.__buf_; |
827 | __invoker_ = __f.__invoker_; |
828 | __policy_ = __f.__policy_; |
829 | __f.__policy_ = __policy::__create_empty(); |
830 | __f.__invoker_ = __invoker(); |
831 | return *this; |
832 | } |
833 | |
834 | _LIBCPP_INLINE_VISIBILITY |
835 | __policy_func& operator=(nullptr_t) |
836 | { |
837 | const __policy* __p = __policy_; |
838 | __policy_ = __policy::__create_empty(); |
839 | __invoker_ = __invoker(); |
840 | if (__p->__destroy) |
841 | __p->__destroy(__buf_.__large); |
842 | return *this; |
843 | } |
844 | |
845 | _LIBCPP_INLINE_VISIBILITY |
846 | _Rp operator()(_ArgTypes&&... __args) const |
847 | { |
848 | return __invoker_.__call_(_VSTD::addressof(x: __buf_), |
849 | _VSTD::forward<_ArgTypes>(__args)...); |
850 | } |
851 | |
852 | _LIBCPP_INLINE_VISIBILITY |
853 | void swap(__policy_func& __f) |
854 | { |
855 | _VSTD::swap(__invoker_, __f.__invoker_); |
856 | _VSTD::swap(__policy_, __f.__policy_); |
857 | _VSTD::swap(__buf_, __f.__buf_); |
858 | } |
859 | |
860 | _LIBCPP_INLINE_VISIBILITY |
861 | explicit operator bool() const _NOEXCEPT |
862 | { |
863 | return !__policy_->__is_null; |
864 | } |
865 | |
866 | #ifndef _LIBCPP_NO_RTTI |
867 | _LIBCPP_INLINE_VISIBILITY |
868 | const std::type_info& target_type() const _NOEXCEPT |
869 | { |
870 | return *__policy_->__type_info; |
871 | } |
872 | |
873 | template <typename _Tp> |
874 | _LIBCPP_INLINE_VISIBILITY const _Tp* target() const _NOEXCEPT |
875 | { |
876 | if (__policy_->__is_null || typeid(_Tp) != *__policy_->__type_info) |
877 | return nullptr; |
878 | if (__policy_->__clone) // Out of line storage. |
879 | return reinterpret_cast<const _Tp*>(__buf_.__large); |
880 | else |
881 | return reinterpret_cast<const _Tp*>(&__buf_.__small); |
882 | } |
883 | #endif // _LIBCPP_NO_RTTI |
884 | }; |
885 | |
886 | #if defined(_LIBCPP_HAS_BLOCKS_RUNTIME) && !defined(_LIBCPP_HAS_OBJC_ARC) |
887 | |
888 | extern "C" void *_Block_copy(const void *); |
889 | extern "C" void _Block_release(const void *); |
890 | |
891 | template<class _Rp1, class ..._ArgTypes1, class _Alloc, class _Rp, class ..._ArgTypes> |
892 | class __func<_Rp1(^)(_ArgTypes1...), _Alloc, _Rp(_ArgTypes...)> |
893 | : public __base<_Rp(_ArgTypes...)> |
894 | { |
895 | typedef _Rp1(^__block_type)(_ArgTypes1...); |
896 | __block_type __f_; |
897 | |
898 | public: |
899 | _LIBCPP_INLINE_VISIBILITY |
900 | explicit __func(__block_type const& __f) |
901 | : __f_(reinterpret_cast<__block_type>(__f ? _Block_copy(__f) : nullptr)) |
902 | { } |
903 | |
904 | // [TODO] add && to save on a retain |
905 | |
906 | _LIBCPP_INLINE_VISIBILITY |
907 | explicit __func(__block_type __f, const _Alloc& /* unused */) |
908 | : __f_(reinterpret_cast<__block_type>(__f ? _Block_copy(__f) : nullptr)) |
909 | { } |
910 | |
911 | virtual __base<_Rp(_ArgTypes...)>* __clone() const { |
912 | _LIBCPP_ASSERT(false, |
913 | "Block pointers are just pointers, so they should always fit into " |
914 | "std::function's small buffer optimization. This function should " |
915 | "never be invoked." ); |
916 | return nullptr; |
917 | } |
918 | |
919 | virtual void __clone(__base<_Rp(_ArgTypes...)>* __p) const { |
920 | ::new ((void*)__p) __func(__f_); |
921 | } |
922 | |
923 | virtual void destroy() _NOEXCEPT { |
924 | if (__f_) |
925 | _Block_release(__f_); |
926 | __f_ = 0; |
927 | } |
928 | |
929 | virtual void destroy_deallocate() _NOEXCEPT { |
930 | _LIBCPP_ASSERT(false, |
931 | "Block pointers are just pointers, so they should always fit into " |
932 | "std::function's small buffer optimization. This function should " |
933 | "never be invoked." ); |
934 | } |
935 | |
936 | virtual _Rp operator()(_ArgTypes&& ... __arg) { |
937 | return _VSTD::__invoke(__f_, _VSTD::forward<_ArgTypes>(__arg)...); |
938 | } |
939 | |
940 | #ifndef _LIBCPP_NO_RTTI |
941 | virtual const void* target(type_info const& __ti) const _NOEXCEPT { |
942 | if (__ti == typeid(__func::__block_type)) |
943 | return &__f_; |
944 | return (const void*)nullptr; |
945 | } |
946 | |
947 | virtual const std::type_info& target_type() const _NOEXCEPT { |
948 | return typeid(__func::__block_type); |
949 | } |
950 | #endif // _LIBCPP_NO_RTTI |
951 | }; |
952 | |
953 | #endif // _LIBCPP_HAS_EXTENSION_BLOCKS && !_LIBCPP_HAS_OBJC_ARC |
954 | |
955 | } // namespace __function |
956 | |
957 | template<class _Rp, class ..._ArgTypes> |
958 | class _LIBCPP_TEMPLATE_VIS function<_Rp(_ArgTypes...)> |
959 | : public __function::__maybe_derive_from_unary_function<_Rp(_ArgTypes...)>, |
960 | public __function::__maybe_derive_from_binary_function<_Rp(_ArgTypes...)> |
961 | { |
962 | #ifndef _LIBCPP_ABI_OPTIMIZED_FUNCTION |
963 | typedef __function::__value_func<_Rp(_ArgTypes...)> __func; |
964 | #else |
965 | typedef __function::__policy_func<_Rp(_ArgTypes...)> __func; |
966 | #endif |
967 | |
968 | __func __f_; |
969 | |
970 | template <class _Fp, bool = _And< |
971 | _IsNotSame<__uncvref_t<_Fp>, function>, |
972 | __invokable<_Fp, _ArgTypes...> |
973 | >::value> |
974 | struct __callable; |
975 | template <class _Fp> |
976 | struct __callable<_Fp, true> |
977 | { |
978 | static const bool value = is_void<_Rp>::value || |
979 | __is_core_convertible<typename __invoke_of<_Fp, _ArgTypes...>::type, |
980 | _Rp>::value; |
981 | }; |
982 | template <class _Fp> |
983 | struct __callable<_Fp, false> |
984 | { |
985 | static const bool value = false; |
986 | }; |
987 | |
988 | template <class _Fp> |
989 | using _EnableIfLValueCallable = typename enable_if<__callable<_Fp&>::value>::type; |
990 | public: |
991 | typedef _Rp result_type; |
992 | |
993 | // construct/copy/destroy: |
994 | _LIBCPP_INLINE_VISIBILITY |
995 | function() _NOEXCEPT { } |
996 | _LIBCPP_INLINE_VISIBILITY |
997 | function(nullptr_t) _NOEXCEPT {} |
998 | function(const function&); |
999 | function(function&&) _NOEXCEPT; |
1000 | template<class _Fp, class = _EnableIfLValueCallable<_Fp>> |
1001 | function(_Fp); |
1002 | |
1003 | #if _LIBCPP_STD_VER <= 14 |
1004 | template<class _Alloc> |
1005 | _LIBCPP_INLINE_VISIBILITY |
1006 | function(allocator_arg_t, const _Alloc&) _NOEXCEPT {} |
1007 | template<class _Alloc> |
1008 | _LIBCPP_INLINE_VISIBILITY |
1009 | function(allocator_arg_t, const _Alloc&, nullptr_t) _NOEXCEPT {} |
1010 | template<class _Alloc> |
1011 | function(allocator_arg_t, const _Alloc&, const function&); |
1012 | template<class _Alloc> |
1013 | function(allocator_arg_t, const _Alloc&, function&&); |
1014 | template<class _Fp, class _Alloc, class = _EnableIfLValueCallable<_Fp>> |
1015 | function(allocator_arg_t, const _Alloc& __a, _Fp __f); |
1016 | #endif |
1017 | |
1018 | function& operator=(const function&); |
1019 | function& operator=(function&&) _NOEXCEPT; |
1020 | function& operator=(nullptr_t) _NOEXCEPT; |
1021 | template<class _Fp, class = _EnableIfLValueCallable<typename decay<_Fp>::type>> |
1022 | function& operator=(_Fp&&); |
1023 | |
1024 | ~function(); |
1025 | |
1026 | // function modifiers: |
1027 | void swap(function&) _NOEXCEPT; |
1028 | |
1029 | #if _LIBCPP_STD_VER <= 14 |
1030 | template<class _Fp, class _Alloc> |
1031 | _LIBCPP_INLINE_VISIBILITY |
1032 | void assign(_Fp&& __f, const _Alloc& __a) |
1033 | {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);} |
1034 | #endif |
1035 | |
1036 | // function capacity: |
1037 | _LIBCPP_INLINE_VISIBILITY |
1038 | explicit operator bool() const _NOEXCEPT { |
1039 | return static_cast<bool>(__f_); |
1040 | } |
1041 | |
1042 | // deleted overloads close possible hole in the type system |
1043 | template<class _R2, class... _ArgTypes2> |
1044 | bool operator==(const function<_R2(_ArgTypes2...)>&) const = delete; |
1045 | template<class _R2, class... _ArgTypes2> |
1046 | bool operator!=(const function<_R2(_ArgTypes2...)>&) const = delete; |
1047 | public: |
1048 | // function invocation: |
1049 | _Rp operator()(_ArgTypes...) const; |
1050 | |
1051 | #ifndef _LIBCPP_NO_RTTI |
1052 | // function target access: |
1053 | const std::type_info& target_type() const _NOEXCEPT; |
1054 | template <typename _Tp> _Tp* target() _NOEXCEPT; |
1055 | template <typename _Tp> const _Tp* target() const _NOEXCEPT; |
1056 | #endif // _LIBCPP_NO_RTTI |
1057 | }; |
1058 | |
1059 | #if _LIBCPP_STD_VER >= 17 |
1060 | template<class _Rp, class ..._Ap> |
1061 | function(_Rp(*)(_Ap...)) -> function<_Rp(_Ap...)>; |
1062 | |
1063 | template<class _Fp> |
1064 | struct __strip_signature; |
1065 | |
1066 | template<class _Rp, class _Gp, class ..._Ap> |
1067 | struct __strip_signature<_Rp (_Gp::*) (_Ap...)> { using type = _Rp(_Ap...); }; |
1068 | template<class _Rp, class _Gp, class ..._Ap> |
1069 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) const> { using type = _Rp(_Ap...); }; |
1070 | template<class _Rp, class _Gp, class ..._Ap> |
1071 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile> { using type = _Rp(_Ap...); }; |
1072 | template<class _Rp, class _Gp, class ..._Ap> |
1073 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile> { using type = _Rp(_Ap...); }; |
1074 | |
1075 | template<class _Rp, class _Gp, class ..._Ap> |
1076 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) &> { using type = _Rp(_Ap...); }; |
1077 | template<class _Rp, class _Gp, class ..._Ap> |
1078 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) const &> { using type = _Rp(_Ap...); }; |
1079 | template<class _Rp, class _Gp, class ..._Ap> |
1080 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile &> { using type = _Rp(_Ap...); }; |
1081 | template<class _Rp, class _Gp, class ..._Ap> |
1082 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile &> { using type = _Rp(_Ap...); }; |
1083 | |
1084 | template<class _Rp, class _Gp, class ..._Ap> |
1085 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) noexcept> { using type = _Rp(_Ap...); }; |
1086 | template<class _Rp, class _Gp, class ..._Ap> |
1087 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) const noexcept> { using type = _Rp(_Ap...); }; |
1088 | template<class _Rp, class _Gp, class ..._Ap> |
1089 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile noexcept> { using type = _Rp(_Ap...); }; |
1090 | template<class _Rp, class _Gp, class ..._Ap> |
1091 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile noexcept> { using type = _Rp(_Ap...); }; |
1092 | |
1093 | template<class _Rp, class _Gp, class ..._Ap> |
1094 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) & noexcept> { using type = _Rp(_Ap...); }; |
1095 | template<class _Rp, class _Gp, class ..._Ap> |
1096 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) const & noexcept> { using type = _Rp(_Ap...); }; |
1097 | template<class _Rp, class _Gp, class ..._Ap> |
1098 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) volatile & noexcept> { using type = _Rp(_Ap...); }; |
1099 | template<class _Rp, class _Gp, class ..._Ap> |
1100 | struct __strip_signature<_Rp (_Gp::*) (_Ap...) const volatile & noexcept> { using type = _Rp(_Ap...); }; |
1101 | |
1102 | template<class _Fp, class _Stripped = typename __strip_signature<decltype(&_Fp::operator())>::type> |
1103 | function(_Fp) -> function<_Stripped>; |
1104 | #endif // _LIBCPP_STD_VER >= 17 |
1105 | |
1106 | template<class _Rp, class ..._ArgTypes> |
1107 | function<_Rp(_ArgTypes...)>::function(const function& __f) : __f_(__f.__f_) {} |
1108 | |
1109 | #if _LIBCPP_STD_VER <= 14 |
1110 | template<class _Rp, class ..._ArgTypes> |
1111 | template <class _Alloc> |
1112 | function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, |
1113 | const function& __f) : __f_(__f.__f_) {} |
1114 | #endif |
1115 | |
1116 | template <class _Rp, class... _ArgTypes> |
1117 | function<_Rp(_ArgTypes...)>::function(function&& __f) _NOEXCEPT |
1118 | : __f_(_VSTD::move(__f.__f_)) {} |
1119 | |
1120 | #if _LIBCPP_STD_VER <= 14 |
1121 | template<class _Rp, class ..._ArgTypes> |
1122 | template <class _Alloc> |
1123 | function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc&, |
1124 | function&& __f) |
1125 | : __f_(_VSTD::move(__f.__f_)) {} |
1126 | #endif |
1127 | |
1128 | template <class _Rp, class... _ArgTypes> |
1129 | template <class _Fp, class> |
1130 | function<_Rp(_ArgTypes...)>::function(_Fp __f) : __f_(_VSTD::move(__f)) {} |
1131 | |
1132 | #if _LIBCPP_STD_VER <= 14 |
1133 | template <class _Rp, class... _ArgTypes> |
1134 | template <class _Fp, class _Alloc, class> |
1135 | function<_Rp(_ArgTypes...)>::function(allocator_arg_t, const _Alloc& __a, |
1136 | _Fp __f) |
1137 | : __f_(_VSTD::move(__f), __a) {} |
1138 | #endif |
1139 | |
1140 | template<class _Rp, class ..._ArgTypes> |
1141 | function<_Rp(_ArgTypes...)>& |
1142 | function<_Rp(_ArgTypes...)>::operator=(const function& __f) |
1143 | { |
1144 | function(__f).swap(*this); |
1145 | return *this; |
1146 | } |
1147 | |
1148 | template<class _Rp, class ..._ArgTypes> |
1149 | function<_Rp(_ArgTypes...)>& |
1150 | function<_Rp(_ArgTypes...)>::operator=(function&& __f) _NOEXCEPT |
1151 | { |
1152 | __f_ = _VSTD::move(__f.__f_); |
1153 | return *this; |
1154 | } |
1155 | |
1156 | template<class _Rp, class ..._ArgTypes> |
1157 | function<_Rp(_ArgTypes...)>& |
1158 | function<_Rp(_ArgTypes...)>::operator=(nullptr_t) _NOEXCEPT |
1159 | { |
1160 | __f_ = nullptr; |
1161 | return *this; |
1162 | } |
1163 | |
1164 | template<class _Rp, class ..._ArgTypes> |
1165 | template <class _Fp, class> |
1166 | function<_Rp(_ArgTypes...)>& |
1167 | function<_Rp(_ArgTypes...)>::operator=(_Fp&& __f) |
1168 | { |
1169 | function(_VSTD::forward<_Fp>(__f)).swap(*this); |
1170 | return *this; |
1171 | } |
1172 | |
1173 | template<class _Rp, class ..._ArgTypes> |
1174 | function<_Rp(_ArgTypes...)>::~function() {} |
1175 | |
1176 | template<class _Rp, class ..._ArgTypes> |
1177 | void |
1178 | function<_Rp(_ArgTypes...)>::swap(function& __f) _NOEXCEPT |
1179 | { |
1180 | __f_.swap(__f.__f_); |
1181 | } |
1182 | |
1183 | template<class _Rp, class ..._ArgTypes> |
1184 | _Rp |
1185 | function<_Rp(_ArgTypes...)>::operator()(_ArgTypes... __arg) const |
1186 | { |
1187 | return __f_(_VSTD::forward<_ArgTypes>(__arg)...); |
1188 | } |
1189 | |
1190 | #ifndef _LIBCPP_NO_RTTI |
1191 | |
1192 | template<class _Rp, class ..._ArgTypes> |
1193 | const std::type_info& |
1194 | function<_Rp(_ArgTypes...)>::target_type() const _NOEXCEPT |
1195 | { |
1196 | return __f_.target_type(); |
1197 | } |
1198 | |
1199 | template<class _Rp, class ..._ArgTypes> |
1200 | template <typename _Tp> |
1201 | _Tp* |
1202 | function<_Rp(_ArgTypes...)>::target() _NOEXCEPT |
1203 | { |
1204 | return (_Tp*)(__f_.template target<_Tp>()); |
1205 | } |
1206 | |
1207 | template<class _Rp, class ..._ArgTypes> |
1208 | template <typename _Tp> |
1209 | const _Tp* |
1210 | function<_Rp(_ArgTypes...)>::target() const _NOEXCEPT |
1211 | { |
1212 | return __f_.template target<_Tp>(); |
1213 | } |
1214 | |
1215 | #endif // _LIBCPP_NO_RTTI |
1216 | |
1217 | template <class _Rp, class... _ArgTypes> |
1218 | inline _LIBCPP_INLINE_VISIBILITY |
1219 | bool |
1220 | operator==(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return !__f;} |
1221 | |
1222 | template <class _Rp, class... _ArgTypes> |
1223 | inline _LIBCPP_INLINE_VISIBILITY |
1224 | bool |
1225 | operator==(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return !__f;} |
1226 | |
1227 | template <class _Rp, class... _ArgTypes> |
1228 | inline _LIBCPP_INLINE_VISIBILITY |
1229 | bool |
1230 | operator!=(const function<_Rp(_ArgTypes...)>& __f, nullptr_t) _NOEXCEPT {return (bool)__f;} |
1231 | |
1232 | template <class _Rp, class... _ArgTypes> |
1233 | inline _LIBCPP_INLINE_VISIBILITY |
1234 | bool |
1235 | operator!=(nullptr_t, const function<_Rp(_ArgTypes...)>& __f) _NOEXCEPT {return (bool)__f;} |
1236 | |
1237 | template <class _Rp, class... _ArgTypes> |
1238 | inline _LIBCPP_INLINE_VISIBILITY |
1239 | void |
1240 | swap(function<_Rp(_ArgTypes...)>& __x, function<_Rp(_ArgTypes...)>& __y) _NOEXCEPT |
1241 | {return __x.swap(__y);} |
1242 | |
1243 | #elif defined(_LIBCPP_ENABLE_CXX03_FUNCTION) |
1244 | |
1245 | namespace __function { |
1246 | |
1247 | template<class _Fp> class __base; |
1248 | |
1249 | template<class _Rp> |
1250 | class __base<_Rp()> |
1251 | { |
1252 | __base(const __base&); |
1253 | __base& operator=(const __base&); |
1254 | public: |
1255 | __base() {} |
1256 | virtual ~__base() {} |
1257 | virtual __base* __clone() const = 0; |
1258 | virtual void __clone(__base*) const = 0; |
1259 | virtual void destroy() = 0; |
1260 | virtual void destroy_deallocate() = 0; |
1261 | virtual _Rp operator()() = 0; |
1262 | #ifndef _LIBCPP_NO_RTTI |
1263 | virtual const void* target(const type_info&) const = 0; |
1264 | virtual const std::type_info& target_type() const = 0; |
1265 | #endif // _LIBCPP_NO_RTTI |
1266 | }; |
1267 | |
1268 | template<class _Rp, class _A0> |
1269 | class __base<_Rp(_A0)> |
1270 | { |
1271 | __base(const __base&); |
1272 | __base& operator=(const __base&); |
1273 | public: |
1274 | __base() {} |
1275 | virtual ~__base() {} |
1276 | virtual __base* __clone() const = 0; |
1277 | virtual void __clone(__base*) const = 0; |
1278 | virtual void destroy() = 0; |
1279 | virtual void destroy_deallocate() = 0; |
1280 | virtual _Rp operator()(_A0) = 0; |
1281 | #ifndef _LIBCPP_NO_RTTI |
1282 | virtual const void* target(const type_info&) const = 0; |
1283 | virtual const std::type_info& target_type() const = 0; |
1284 | #endif // _LIBCPP_NO_RTTI |
1285 | }; |
1286 | |
1287 | template<class _Rp, class _A0, class _A1> |
1288 | class __base<_Rp(_A0, _A1)> |
1289 | { |
1290 | __base(const __base&); |
1291 | __base& operator=(const __base&); |
1292 | public: |
1293 | __base() {} |
1294 | virtual ~__base() {} |
1295 | virtual __base* __clone() const = 0; |
1296 | virtual void __clone(__base*) const = 0; |
1297 | virtual void destroy() = 0; |
1298 | virtual void destroy_deallocate() = 0; |
1299 | virtual _Rp operator()(_A0, _A1) = 0; |
1300 | #ifndef _LIBCPP_NO_RTTI |
1301 | virtual const void* target(const type_info&) const = 0; |
1302 | virtual const std::type_info& target_type() const = 0; |
1303 | #endif // _LIBCPP_NO_RTTI |
1304 | }; |
1305 | |
1306 | template<class _Rp, class _A0, class _A1, class _A2> |
1307 | class __base<_Rp(_A0, _A1, _A2)> |
1308 | { |
1309 | __base(const __base&); |
1310 | __base& operator=(const __base&); |
1311 | public: |
1312 | __base() {} |
1313 | virtual ~__base() {} |
1314 | virtual __base* __clone() const = 0; |
1315 | virtual void __clone(__base*) const = 0; |
1316 | virtual void destroy() = 0; |
1317 | virtual void destroy_deallocate() = 0; |
1318 | virtual _Rp operator()(_A0, _A1, _A2) = 0; |
1319 | #ifndef _LIBCPP_NO_RTTI |
1320 | virtual const void* target(const type_info&) const = 0; |
1321 | virtual const std::type_info& target_type() const = 0; |
1322 | #endif // _LIBCPP_NO_RTTI |
1323 | }; |
1324 | |
1325 | template<class _FD, class _Alloc, class _FB> class __func; |
1326 | |
1327 | template<class _Fp, class _Alloc, class _Rp> |
1328 | class __func<_Fp, _Alloc, _Rp()> |
1329 | : public __base<_Rp()> |
1330 | { |
1331 | __compressed_pair<_Fp, _Alloc> __f_; |
1332 | public: |
1333 | explicit __func(_Fp __f) : __f_(_VSTD::move(__f), __default_init_tag()) {} |
1334 | explicit __func(_Fp __f, _Alloc __a) : __f_(_VSTD::move(__f), _VSTD::move(__a)) {} |
1335 | virtual __base<_Rp()>* __clone() const; |
1336 | virtual void __clone(__base<_Rp()>*) const; |
1337 | virtual void destroy(); |
1338 | virtual void destroy_deallocate(); |
1339 | virtual _Rp operator()(); |
1340 | #ifndef _LIBCPP_NO_RTTI |
1341 | virtual const void* target(const type_info&) const; |
1342 | virtual const std::type_info& target_type() const; |
1343 | #endif // _LIBCPP_NO_RTTI |
1344 | }; |
1345 | |
1346 | template<class _Fp, class _Alloc, class _Rp> |
1347 | __base<_Rp()>* |
1348 | __func<_Fp, _Alloc, _Rp()>::__clone() const |
1349 | { |
1350 | typedef allocator_traits<_Alloc> __alloc_traits; |
1351 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
1352 | _Ap __a(__f_.second()); |
1353 | typedef __allocator_destructor<_Ap> _Dp; |
1354 | unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
1355 | ::new ((void*)__hold.get()) __func(__f_.first(), _Alloc(__a)); |
1356 | return __hold.release(); |
1357 | } |
1358 | |
1359 | template<class _Fp, class _Alloc, class _Rp> |
1360 | void |
1361 | __func<_Fp, _Alloc, _Rp()>::__clone(__base<_Rp()>* __p) const |
1362 | { |
1363 | ::new ((void*)__p) __func(__f_.first(), __f_.second()); |
1364 | } |
1365 | |
1366 | template<class _Fp, class _Alloc, class _Rp> |
1367 | void |
1368 | __func<_Fp, _Alloc, _Rp()>::destroy() |
1369 | { |
1370 | __f_.~__compressed_pair<_Fp, _Alloc>(); |
1371 | } |
1372 | |
1373 | template<class _Fp, class _Alloc, class _Rp> |
1374 | void |
1375 | __func<_Fp, _Alloc, _Rp()>::destroy_deallocate() |
1376 | { |
1377 | typedef allocator_traits<_Alloc> __alloc_traits; |
1378 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
1379 | _Ap __a(__f_.second()); |
1380 | __f_.~__compressed_pair<_Fp, _Alloc>(); |
1381 | __a.deallocate(this, 1); |
1382 | } |
1383 | |
1384 | template<class _Fp, class _Alloc, class _Rp> |
1385 | _Rp |
1386 | __func<_Fp, _Alloc, _Rp()>::operator()() |
1387 | { |
1388 | typedef __invoke_void_return_wrapper<_Rp> _Invoker; |
1389 | return _Invoker::__call(__f_.first()); |
1390 | } |
1391 | |
1392 | #ifndef _LIBCPP_NO_RTTI |
1393 | |
1394 | template<class _Fp, class _Alloc, class _Rp> |
1395 | const void* |
1396 | __func<_Fp, _Alloc, _Rp()>::target(const type_info& __ti) const |
1397 | { |
1398 | if (__ti == typeid(_Fp)) |
1399 | return _VSTD::addressof(__f_.first()); |
1400 | return (const void*)0; |
1401 | } |
1402 | |
1403 | template<class _Fp, class _Alloc, class _Rp> |
1404 | const std::type_info& |
1405 | __func<_Fp, _Alloc, _Rp()>::target_type() const |
1406 | { |
1407 | return typeid(_Fp); |
1408 | } |
1409 | |
1410 | #endif // _LIBCPP_NO_RTTI |
1411 | |
1412 | template<class _Fp, class _Alloc, class _Rp, class _A0> |
1413 | class __func<_Fp, _Alloc, _Rp(_A0)> |
1414 | : public __base<_Rp(_A0)> |
1415 | { |
1416 | __compressed_pair<_Fp, _Alloc> __f_; |
1417 | public: |
1418 | _LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f) : __f_(_VSTD::move(__f), __default_init_tag()) {} |
1419 | _LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f, _Alloc __a) |
1420 | : __f_(_VSTD::move(__f), _VSTD::move(__a)) {} |
1421 | virtual __base<_Rp(_A0)>* __clone() const; |
1422 | virtual void __clone(__base<_Rp(_A0)>*) const; |
1423 | virtual void destroy(); |
1424 | virtual void destroy_deallocate(); |
1425 | virtual _Rp operator()(_A0); |
1426 | #ifndef _LIBCPP_NO_RTTI |
1427 | virtual const void* target(const type_info&) const; |
1428 | virtual const std::type_info& target_type() const; |
1429 | #endif // _LIBCPP_NO_RTTI |
1430 | }; |
1431 | |
1432 | template<class _Fp, class _Alloc, class _Rp, class _A0> |
1433 | __base<_Rp(_A0)>* |
1434 | __func<_Fp, _Alloc, _Rp(_A0)>::__clone() const |
1435 | { |
1436 | typedef allocator_traits<_Alloc> __alloc_traits; |
1437 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
1438 | _Ap __a(__f_.second()); |
1439 | typedef __allocator_destructor<_Ap> _Dp; |
1440 | unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
1441 | ::new ((void*)__hold.get()) __func(__f_.first(), _Alloc(__a)); |
1442 | return __hold.release(); |
1443 | } |
1444 | |
1445 | template<class _Fp, class _Alloc, class _Rp, class _A0> |
1446 | void |
1447 | __func<_Fp, _Alloc, _Rp(_A0)>::__clone(__base<_Rp(_A0)>* __p) const |
1448 | { |
1449 | ::new ((void*)__p) __func(__f_.first(), __f_.second()); |
1450 | } |
1451 | |
1452 | template<class _Fp, class _Alloc, class _Rp, class _A0> |
1453 | void |
1454 | __func<_Fp, _Alloc, _Rp(_A0)>::destroy() |
1455 | { |
1456 | __f_.~__compressed_pair<_Fp, _Alloc>(); |
1457 | } |
1458 | |
1459 | template<class _Fp, class _Alloc, class _Rp, class _A0> |
1460 | void |
1461 | __func<_Fp, _Alloc, _Rp(_A0)>::destroy_deallocate() |
1462 | { |
1463 | typedef allocator_traits<_Alloc> __alloc_traits; |
1464 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
1465 | _Ap __a(__f_.second()); |
1466 | __f_.~__compressed_pair<_Fp, _Alloc>(); |
1467 | __a.deallocate(this, 1); |
1468 | } |
1469 | |
1470 | template<class _Fp, class _Alloc, class _Rp, class _A0> |
1471 | _Rp |
1472 | __func<_Fp, _Alloc, _Rp(_A0)>::operator()(_A0 __a0) |
1473 | { |
1474 | typedef __invoke_void_return_wrapper<_Rp> _Invoker; |
1475 | return _Invoker::__call(__f_.first(), __a0); |
1476 | } |
1477 | |
1478 | #ifndef _LIBCPP_NO_RTTI |
1479 | |
1480 | template<class _Fp, class _Alloc, class _Rp, class _A0> |
1481 | const void* |
1482 | __func<_Fp, _Alloc, _Rp(_A0)>::target(const type_info& __ti) const |
1483 | { |
1484 | if (__ti == typeid(_Fp)) |
1485 | return &__f_.first(); |
1486 | return (const void*)0; |
1487 | } |
1488 | |
1489 | template<class _Fp, class _Alloc, class _Rp, class _A0> |
1490 | const std::type_info& |
1491 | __func<_Fp, _Alloc, _Rp(_A0)>::target_type() const |
1492 | { |
1493 | return typeid(_Fp); |
1494 | } |
1495 | |
1496 | #endif // _LIBCPP_NO_RTTI |
1497 | |
1498 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1> |
1499 | class __func<_Fp, _Alloc, _Rp(_A0, _A1)> |
1500 | : public __base<_Rp(_A0, _A1)> |
1501 | { |
1502 | __compressed_pair<_Fp, _Alloc> __f_; |
1503 | public: |
1504 | _LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f) : __f_(_VSTD::move(__f), __default_init_tag()) {} |
1505 | _LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f, _Alloc __a) |
1506 | : __f_(_VSTD::move(__f), _VSTD::move(__a)) {} |
1507 | virtual __base<_Rp(_A0, _A1)>* __clone() const; |
1508 | virtual void __clone(__base<_Rp(_A0, _A1)>*) const; |
1509 | virtual void destroy(); |
1510 | virtual void destroy_deallocate(); |
1511 | virtual _Rp operator()(_A0, _A1); |
1512 | #ifndef _LIBCPP_NO_RTTI |
1513 | virtual const void* target(const type_info&) const; |
1514 | virtual const std::type_info& target_type() const; |
1515 | #endif // _LIBCPP_NO_RTTI |
1516 | }; |
1517 | |
1518 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1> |
1519 | __base<_Rp(_A0, _A1)>* |
1520 | __func<_Fp, _Alloc, _Rp(_A0, _A1)>::__clone() const |
1521 | { |
1522 | typedef allocator_traits<_Alloc> __alloc_traits; |
1523 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
1524 | _Ap __a(__f_.second()); |
1525 | typedef __allocator_destructor<_Ap> _Dp; |
1526 | unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
1527 | ::new ((void*)__hold.get()) __func(__f_.first(), _Alloc(__a)); |
1528 | return __hold.release(); |
1529 | } |
1530 | |
1531 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1> |
1532 | void |
1533 | __func<_Fp, _Alloc, _Rp(_A0, _A1)>::__clone(__base<_Rp(_A0, _A1)>* __p) const |
1534 | { |
1535 | ::new ((void*)__p) __func(__f_.first(), __f_.second()); |
1536 | } |
1537 | |
1538 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1> |
1539 | void |
1540 | __func<_Fp, _Alloc, _Rp(_A0, _A1)>::destroy() |
1541 | { |
1542 | __f_.~__compressed_pair<_Fp, _Alloc>(); |
1543 | } |
1544 | |
1545 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1> |
1546 | void |
1547 | __func<_Fp, _Alloc, _Rp(_A0, _A1)>::destroy_deallocate() |
1548 | { |
1549 | typedef allocator_traits<_Alloc> __alloc_traits; |
1550 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
1551 | _Ap __a(__f_.second()); |
1552 | __f_.~__compressed_pair<_Fp, _Alloc>(); |
1553 | __a.deallocate(this, 1); |
1554 | } |
1555 | |
1556 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1> |
1557 | _Rp |
1558 | __func<_Fp, _Alloc, _Rp(_A0, _A1)>::operator()(_A0 __a0, _A1 __a1) |
1559 | { |
1560 | typedef __invoke_void_return_wrapper<_Rp> _Invoker; |
1561 | return _Invoker::__call(__f_.first(), __a0, __a1); |
1562 | } |
1563 | |
1564 | #ifndef _LIBCPP_NO_RTTI |
1565 | |
1566 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1> |
1567 | const void* |
1568 | __func<_Fp, _Alloc, _Rp(_A0, _A1)>::target(const type_info& __ti) const |
1569 | { |
1570 | if (__ti == typeid(_Fp)) |
1571 | return &__f_.first(); |
1572 | return (const void*)0; |
1573 | } |
1574 | |
1575 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1> |
1576 | const std::type_info& |
1577 | __func<_Fp, _Alloc, _Rp(_A0, _A1)>::target_type() const |
1578 | { |
1579 | return typeid(_Fp); |
1580 | } |
1581 | |
1582 | #endif // _LIBCPP_NO_RTTI |
1583 | |
1584 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2> |
1585 | class __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)> |
1586 | : public __base<_Rp(_A0, _A1, _A2)> |
1587 | { |
1588 | __compressed_pair<_Fp, _Alloc> __f_; |
1589 | public: |
1590 | _LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f) : __f_(_VSTD::move(__f), __default_init_tag()) {} |
1591 | _LIBCPP_INLINE_VISIBILITY explicit __func(_Fp __f, _Alloc __a) |
1592 | : __f_(_VSTD::move(__f), _VSTD::move(__a)) {} |
1593 | virtual __base<_Rp(_A0, _A1, _A2)>* __clone() const; |
1594 | virtual void __clone(__base<_Rp(_A0, _A1, _A2)>*) const; |
1595 | virtual void destroy(); |
1596 | virtual void destroy_deallocate(); |
1597 | virtual _Rp operator()(_A0, _A1, _A2); |
1598 | #ifndef _LIBCPP_NO_RTTI |
1599 | virtual const void* target(const type_info&) const; |
1600 | virtual const std::type_info& target_type() const; |
1601 | #endif // _LIBCPP_NO_RTTI |
1602 | }; |
1603 | |
1604 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2> |
1605 | __base<_Rp(_A0, _A1, _A2)>* |
1606 | __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::__clone() const |
1607 | { |
1608 | typedef allocator_traits<_Alloc> __alloc_traits; |
1609 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
1610 | _Ap __a(__f_.second()); |
1611 | typedef __allocator_destructor<_Ap> _Dp; |
1612 | unique_ptr<__func, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
1613 | ::new ((void*)__hold.get()) __func(__f_.first(), _Alloc(__a)); |
1614 | return __hold.release(); |
1615 | } |
1616 | |
1617 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2> |
1618 | void |
1619 | __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::__clone(__base<_Rp(_A0, _A1, _A2)>* __p) const |
1620 | { |
1621 | ::new ((void*)__p) __func(__f_.first(), __f_.second()); |
1622 | } |
1623 | |
1624 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2> |
1625 | void |
1626 | __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::destroy() |
1627 | { |
1628 | __f_.~__compressed_pair<_Fp, _Alloc>(); |
1629 | } |
1630 | |
1631 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2> |
1632 | void |
1633 | __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::destroy_deallocate() |
1634 | { |
1635 | typedef allocator_traits<_Alloc> __alloc_traits; |
1636 | typedef typename __rebind_alloc_helper<__alloc_traits, __func>::type _Ap; |
1637 | _Ap __a(__f_.second()); |
1638 | __f_.~__compressed_pair<_Fp, _Alloc>(); |
1639 | __a.deallocate(this, 1); |
1640 | } |
1641 | |
1642 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2> |
1643 | _Rp |
1644 | __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::operator()(_A0 __a0, _A1 __a1, _A2 __a2) |
1645 | { |
1646 | typedef __invoke_void_return_wrapper<_Rp> _Invoker; |
1647 | return _Invoker::__call(__f_.first(), __a0, __a1, __a2); |
1648 | } |
1649 | |
1650 | #ifndef _LIBCPP_NO_RTTI |
1651 | |
1652 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2> |
1653 | const void* |
1654 | __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::target(const type_info& __ti) const |
1655 | { |
1656 | if (__ti == typeid(_Fp)) |
1657 | return &__f_.first(); |
1658 | return (const void*)0; |
1659 | } |
1660 | |
1661 | template<class _Fp, class _Alloc, class _Rp, class _A0, class _A1, class _A2> |
1662 | const std::type_info& |
1663 | __func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)>::target_type() const |
1664 | { |
1665 | return typeid(_Fp); |
1666 | } |
1667 | |
1668 | #endif // _LIBCPP_NO_RTTI |
1669 | |
1670 | } // namespace __function |
1671 | |
1672 | template<class _Rp> |
1673 | class _LIBCPP_TEMPLATE_VIS function<_Rp()> |
1674 | { |
1675 | typedef __function::__base<_Rp()> __base; |
1676 | aligned_storage<3*sizeof(void*)>::type __buf_; |
1677 | __base* __f_; |
1678 | |
1679 | public: |
1680 | typedef _Rp result_type; |
1681 | |
1682 | // 20.7.16.2.1, construct/copy/destroy: |
1683 | _LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {} |
1684 | _LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {} |
1685 | function(const function&); |
1686 | template<class _Fp> |
1687 | function(_Fp, |
1688 | typename enable_if<!is_integral<_Fp>::value>::type* = 0); |
1689 | |
1690 | template<class _Alloc> |
1691 | _LIBCPP_INLINE_VISIBILITY |
1692 | function(allocator_arg_t, const _Alloc&) : __f_(0) {} |
1693 | template<class _Alloc> |
1694 | _LIBCPP_INLINE_VISIBILITY |
1695 | function(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {} |
1696 | template<class _Alloc> |
1697 | function(allocator_arg_t, const _Alloc&, const function&); |
1698 | template<class _Fp, class _Alloc> |
1699 | function(allocator_arg_t, const _Alloc& __a, _Fp __f, |
1700 | typename enable_if<!is_integral<_Fp>::value>::type* = 0); |
1701 | |
1702 | function& operator=(const function&); |
1703 | function& operator=(nullptr_t); |
1704 | template<class _Fp> |
1705 | typename enable_if |
1706 | < |
1707 | !is_integral<_Fp>::value, |
1708 | function& |
1709 | >::type |
1710 | operator=(_Fp); |
1711 | |
1712 | ~function(); |
1713 | |
1714 | // 20.7.16.2.2, function modifiers: |
1715 | void swap(function&); |
1716 | template<class _Fp, class _Alloc> |
1717 | _LIBCPP_INLINE_VISIBILITY |
1718 | void assign(_Fp __f, const _Alloc& __a) |
1719 | {function(allocator_arg, __a, __f).swap(*this);} |
1720 | |
1721 | // 20.7.16.2.3, function capacity: |
1722 | _LIBCPP_INLINE_VISIBILITY explicit operator bool() const {return __f_;} |
1723 | |
1724 | template<class _R2> |
1725 | bool operator==(const function<_R2()>&) const = delete; |
1726 | template<class _R2> |
1727 | bool operator!=(const function<_R2()>&) const = delete; |
1728 | |
1729 | // 20.7.16.2.4, function invocation: |
1730 | _Rp operator()() const; |
1731 | |
1732 | #ifndef _LIBCPP_NO_RTTI |
1733 | // 20.7.16.2.5, function target access: |
1734 | const std::type_info& target_type() const; |
1735 | template <typename _Tp> _Tp* target(); |
1736 | template <typename _Tp> const _Tp* target() const; |
1737 | #endif // _LIBCPP_NO_RTTI |
1738 | }; |
1739 | |
1740 | template<class _Rp> |
1741 | function<_Rp()>::function(const function& __f) |
1742 | { |
1743 | if (__f.__f_ == 0) |
1744 | __f_ = 0; |
1745 | else if (__f.__f_ == (const __base*)&__f.__buf_) |
1746 | { |
1747 | __f_ = (__base*)&__buf_; |
1748 | __f.__f_->__clone(__f_); |
1749 | } |
1750 | else |
1751 | __f_ = __f.__f_->__clone(); |
1752 | } |
1753 | |
1754 | template<class _Rp> |
1755 | template<class _Alloc> |
1756 | function<_Rp()>::function(allocator_arg_t, const _Alloc&, const function& __f) |
1757 | { |
1758 | if (__f.__f_ == 0) |
1759 | __f_ = 0; |
1760 | else if (__f.__f_ == (const __base*)&__f.__buf_) |
1761 | { |
1762 | __f_ = (__base*)&__buf_; |
1763 | __f.__f_->__clone(__f_); |
1764 | } |
1765 | else |
1766 | __f_ = __f.__f_->__clone(); |
1767 | } |
1768 | |
1769 | template<class _Rp> |
1770 | template <class _Fp> |
1771 | function<_Rp()>::function(_Fp __f, |
1772 | typename enable_if<!is_integral<_Fp>::value>::type*) |
1773 | : __f_(0) |
1774 | { |
1775 | if (__function::__not_null(__f)) |
1776 | { |
1777 | typedef __function::__func<_Fp, allocator<_Fp>, _Rp()> _FF; |
1778 | if (sizeof(_FF) <= sizeof(__buf_)) |
1779 | { |
1780 | __f_ = (__base*)&__buf_; |
1781 | ::new ((void*)__f_) _FF(__f); |
1782 | } |
1783 | else |
1784 | { |
1785 | typedef allocator<_FF> _Ap; |
1786 | _Ap __a; |
1787 | typedef __allocator_destructor<_Ap> _Dp; |
1788 | unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
1789 | ::new ((void*)__hold.get()) _FF(__f, allocator<_Fp>(__a)); |
1790 | __f_ = __hold.release(); |
1791 | } |
1792 | } |
1793 | } |
1794 | |
1795 | template<class _Rp> |
1796 | template <class _Fp, class _Alloc> |
1797 | function<_Rp()>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f, |
1798 | typename enable_if<!is_integral<_Fp>::value>::type*) |
1799 | : __f_(0) |
1800 | { |
1801 | typedef allocator_traits<_Alloc> __alloc_traits; |
1802 | if (__function::__not_null(__f)) |
1803 | { |
1804 | typedef __function::__func<_Fp, _Alloc, _Rp()> _FF; |
1805 | if (sizeof(_FF) <= sizeof(__buf_)) |
1806 | { |
1807 | __f_ = (__base*)&__buf_; |
1808 | ::new ((void*)__f_) _FF(__f, __a0); |
1809 | } |
1810 | else |
1811 | { |
1812 | typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap; |
1813 | _Ap __a(__a0); |
1814 | typedef __allocator_destructor<_Ap> _Dp; |
1815 | unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
1816 | ::new ((void*)__hold.get()) _FF(__f, _Alloc(__a)); |
1817 | __f_ = __hold.release(); |
1818 | } |
1819 | } |
1820 | } |
1821 | |
1822 | template<class _Rp> |
1823 | function<_Rp()>& |
1824 | function<_Rp()>::operator=(const function& __f) |
1825 | { |
1826 | if (__f) |
1827 | function(__f).swap(*this); |
1828 | else |
1829 | *this = nullptr; |
1830 | return *this; |
1831 | } |
1832 | |
1833 | template<class _Rp> |
1834 | function<_Rp()>& |
1835 | function<_Rp()>::operator=(nullptr_t) |
1836 | { |
1837 | __base* __t = __f_; |
1838 | __f_ = 0; |
1839 | if (__t == (__base*)&__buf_) |
1840 | __t->destroy(); |
1841 | else if (__t) |
1842 | __t->destroy_deallocate(); |
1843 | return *this; |
1844 | } |
1845 | |
1846 | template<class _Rp> |
1847 | template <class _Fp> |
1848 | typename enable_if |
1849 | < |
1850 | !is_integral<_Fp>::value, |
1851 | function<_Rp()>& |
1852 | >::type |
1853 | function<_Rp()>::operator=(_Fp __f) |
1854 | { |
1855 | function(_VSTD::move(__f)).swap(*this); |
1856 | return *this; |
1857 | } |
1858 | |
1859 | template<class _Rp> |
1860 | function<_Rp()>::~function() |
1861 | { |
1862 | if (__f_ == (__base*)&__buf_) |
1863 | __f_->destroy(); |
1864 | else if (__f_) |
1865 | __f_->destroy_deallocate(); |
1866 | } |
1867 | |
1868 | template<class _Rp> |
1869 | void |
1870 | function<_Rp()>::swap(function& __f) |
1871 | { |
1872 | if (_VSTD::addressof(__f) == this) |
1873 | return; |
1874 | if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_) |
1875 | { |
1876 | typename aligned_storage<sizeof(__buf_)>::type __tempbuf; |
1877 | __base* __t = (__base*)&__tempbuf; |
1878 | __f_->__clone(__t); |
1879 | __f_->destroy(); |
1880 | __f_ = 0; |
1881 | __f.__f_->__clone((__base*)&__buf_); |
1882 | __f.__f_->destroy(); |
1883 | __f.__f_ = 0; |
1884 | __f_ = (__base*)&__buf_; |
1885 | __t->__clone((__base*)&__f.__buf_); |
1886 | __t->destroy(); |
1887 | __f.__f_ = (__base*)&__f.__buf_; |
1888 | } |
1889 | else if (__f_ == (__base*)&__buf_) |
1890 | { |
1891 | __f_->__clone((__base*)&__f.__buf_); |
1892 | __f_->destroy(); |
1893 | __f_ = __f.__f_; |
1894 | __f.__f_ = (__base*)&__f.__buf_; |
1895 | } |
1896 | else if (__f.__f_ == (__base*)&__f.__buf_) |
1897 | { |
1898 | __f.__f_->__clone((__base*)&__buf_); |
1899 | __f.__f_->destroy(); |
1900 | __f.__f_ = __f_; |
1901 | __f_ = (__base*)&__buf_; |
1902 | } |
1903 | else |
1904 | _VSTD::swap(__f_, __f.__f_); |
1905 | } |
1906 | |
1907 | template<class _Rp> |
1908 | _Rp |
1909 | function<_Rp()>::operator()() const |
1910 | { |
1911 | if (__f_ == 0) |
1912 | __throw_bad_function_call(); |
1913 | return (*__f_)(); |
1914 | } |
1915 | |
1916 | #ifndef _LIBCPP_NO_RTTI |
1917 | |
1918 | template<class _Rp> |
1919 | const std::type_info& |
1920 | function<_Rp()>::target_type() const |
1921 | { |
1922 | if (__f_ == 0) |
1923 | return typeid(void); |
1924 | return __f_->target_type(); |
1925 | } |
1926 | |
1927 | template<class _Rp> |
1928 | template <typename _Tp> |
1929 | _Tp* |
1930 | function<_Rp()>::target() |
1931 | { |
1932 | if (__f_ == 0) |
1933 | return (_Tp*)0; |
1934 | return (_Tp*) const_cast<void *>(__f_->target(typeid(_Tp))); |
1935 | } |
1936 | |
1937 | template<class _Rp> |
1938 | template <typename _Tp> |
1939 | const _Tp* |
1940 | function<_Rp()>::target() const |
1941 | { |
1942 | if (__f_ == 0) |
1943 | return (const _Tp*)0; |
1944 | return (const _Tp*)__f_->target(typeid(_Tp)); |
1945 | } |
1946 | |
1947 | #endif // _LIBCPP_NO_RTTI |
1948 | |
1949 | template<class _Rp, class _A0> |
1950 | class _LIBCPP_TEMPLATE_VIS function<_Rp(_A0)> |
1951 | : public unary_function<_A0, _Rp> |
1952 | { |
1953 | typedef __function::__base<_Rp(_A0)> __base; |
1954 | aligned_storage<3*sizeof(void*)>::type __buf_; |
1955 | __base* __f_; |
1956 | |
1957 | public: |
1958 | typedef _Rp result_type; |
1959 | |
1960 | // 20.7.16.2.1, construct/copy/destroy: |
1961 | _LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {} |
1962 | _LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {} |
1963 | function(const function&); |
1964 | template<class _Fp> |
1965 | function(_Fp, |
1966 | typename enable_if<!is_integral<_Fp>::value>::type* = 0); |
1967 | |
1968 | template<class _Alloc> |
1969 | _LIBCPP_INLINE_VISIBILITY |
1970 | function(allocator_arg_t, const _Alloc&) : __f_(0) {} |
1971 | template<class _Alloc> |
1972 | _LIBCPP_INLINE_VISIBILITY |
1973 | function(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {} |
1974 | template<class _Alloc> |
1975 | function(allocator_arg_t, const _Alloc&, const function&); |
1976 | template<class _Fp, class _Alloc> |
1977 | function(allocator_arg_t, const _Alloc& __a, _Fp __f, |
1978 | typename enable_if<!is_integral<_Fp>::value>::type* = 0); |
1979 | |
1980 | function& operator=(const function&); |
1981 | function& operator=(nullptr_t); |
1982 | template<class _Fp> |
1983 | typename enable_if |
1984 | < |
1985 | !is_integral<_Fp>::value, |
1986 | function& |
1987 | >::type |
1988 | operator=(_Fp); |
1989 | |
1990 | ~function(); |
1991 | |
1992 | // 20.7.16.2.2, function modifiers: |
1993 | void swap(function&); |
1994 | template<class _Fp, class _Alloc> |
1995 | _LIBCPP_INLINE_VISIBILITY |
1996 | void assign(_Fp __f, const _Alloc& __a) |
1997 | {function(allocator_arg, __a, __f).swap(*this);} |
1998 | |
1999 | // 20.7.16.2.3, function capacity: |
2000 | _LIBCPP_INLINE_VISIBILITY explicit operator bool() const {return __f_;} |
2001 | |
2002 | template<class _R2, class _B0> |
2003 | bool operator==(const function<_R2(_B0)>&) const = delete; |
2004 | template<class _R2, class _B0> |
2005 | bool operator!=(const function<_R2(_B0)>&) const = delete; |
2006 | |
2007 | // 20.7.16.2.4, function invocation: |
2008 | _Rp operator()(_A0) const; |
2009 | |
2010 | #ifndef _LIBCPP_NO_RTTI |
2011 | // 20.7.16.2.5, function target access: |
2012 | const std::type_info& target_type() const; |
2013 | template <typename _Tp> _Tp* target(); |
2014 | template <typename _Tp> const _Tp* target() const; |
2015 | #endif // _LIBCPP_NO_RTTI |
2016 | }; |
2017 | |
2018 | template<class _Rp, class _A0> |
2019 | function<_Rp(_A0)>::function(const function& __f) |
2020 | { |
2021 | if (__f.__f_ == 0) |
2022 | __f_ = 0; |
2023 | else if (__f.__f_ == (const __base*)&__f.__buf_) |
2024 | { |
2025 | __f_ = (__base*)&__buf_; |
2026 | __f.__f_->__clone(__f_); |
2027 | } |
2028 | else |
2029 | __f_ = __f.__f_->__clone(); |
2030 | } |
2031 | |
2032 | template<class _Rp, class _A0> |
2033 | template<class _Alloc> |
2034 | function<_Rp(_A0)>::function(allocator_arg_t, const _Alloc&, const function& __f) |
2035 | { |
2036 | if (__f.__f_ == 0) |
2037 | __f_ = 0; |
2038 | else if (__f.__f_ == (const __base*)&__f.__buf_) |
2039 | { |
2040 | __f_ = (__base*)&__buf_; |
2041 | __f.__f_->__clone(__f_); |
2042 | } |
2043 | else |
2044 | __f_ = __f.__f_->__clone(); |
2045 | } |
2046 | |
2047 | template<class _Rp, class _A0> |
2048 | template <class _Fp> |
2049 | function<_Rp(_A0)>::function(_Fp __f, |
2050 | typename enable_if<!is_integral<_Fp>::value>::type*) |
2051 | : __f_(0) |
2052 | { |
2053 | if (__function::__not_null(__f)) |
2054 | { |
2055 | typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_A0)> _FF; |
2056 | if (sizeof(_FF) <= sizeof(__buf_)) |
2057 | { |
2058 | __f_ = (__base*)&__buf_; |
2059 | ::new ((void*)__f_) _FF(__f); |
2060 | } |
2061 | else |
2062 | { |
2063 | typedef allocator<_FF> _Ap; |
2064 | _Ap __a; |
2065 | typedef __allocator_destructor<_Ap> _Dp; |
2066 | unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
2067 | ::new ((void*)__hold.get()) _FF(__f, allocator<_Fp>(__a)); |
2068 | __f_ = __hold.release(); |
2069 | } |
2070 | } |
2071 | } |
2072 | |
2073 | template<class _Rp, class _A0> |
2074 | template <class _Fp, class _Alloc> |
2075 | function<_Rp(_A0)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f, |
2076 | typename enable_if<!is_integral<_Fp>::value>::type*) |
2077 | : __f_(0) |
2078 | { |
2079 | typedef allocator_traits<_Alloc> __alloc_traits; |
2080 | if (__function::__not_null(__f)) |
2081 | { |
2082 | typedef __function::__func<_Fp, _Alloc, _Rp(_A0)> _FF; |
2083 | if (sizeof(_FF) <= sizeof(__buf_)) |
2084 | { |
2085 | __f_ = (__base*)&__buf_; |
2086 | ::new ((void*)__f_) _FF(__f, __a0); |
2087 | } |
2088 | else |
2089 | { |
2090 | typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap; |
2091 | _Ap __a(__a0); |
2092 | typedef __allocator_destructor<_Ap> _Dp; |
2093 | unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
2094 | ::new ((void*)__hold.get()) _FF(__f, _Alloc(__a)); |
2095 | __f_ = __hold.release(); |
2096 | } |
2097 | } |
2098 | } |
2099 | |
2100 | template<class _Rp, class _A0> |
2101 | function<_Rp(_A0)>& |
2102 | function<_Rp(_A0)>::operator=(const function& __f) |
2103 | { |
2104 | if (__f) |
2105 | function(__f).swap(*this); |
2106 | else |
2107 | *this = nullptr; |
2108 | return *this; |
2109 | } |
2110 | |
2111 | template<class _Rp, class _A0> |
2112 | function<_Rp(_A0)>& |
2113 | function<_Rp(_A0)>::operator=(nullptr_t) |
2114 | { |
2115 | __base* __t = __f_; |
2116 | __f_ = 0; |
2117 | if (__t == (__base*)&__buf_) |
2118 | __t->destroy(); |
2119 | else if (__t) |
2120 | __t->destroy_deallocate(); |
2121 | return *this; |
2122 | } |
2123 | |
2124 | template<class _Rp, class _A0> |
2125 | template <class _Fp> |
2126 | typename enable_if |
2127 | < |
2128 | !is_integral<_Fp>::value, |
2129 | function<_Rp(_A0)>& |
2130 | >::type |
2131 | function<_Rp(_A0)>::operator=(_Fp __f) |
2132 | { |
2133 | function(_VSTD::move(__f)).swap(*this); |
2134 | return *this; |
2135 | } |
2136 | |
2137 | template<class _Rp, class _A0> |
2138 | function<_Rp(_A0)>::~function() |
2139 | { |
2140 | if (__f_ == (__base*)&__buf_) |
2141 | __f_->destroy(); |
2142 | else if (__f_) |
2143 | __f_->destroy_deallocate(); |
2144 | } |
2145 | |
2146 | template<class _Rp, class _A0> |
2147 | void |
2148 | function<_Rp(_A0)>::swap(function& __f) |
2149 | { |
2150 | if (_VSTD::addressof(__f) == this) |
2151 | return; |
2152 | if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_) |
2153 | { |
2154 | typename aligned_storage<sizeof(__buf_)>::type __tempbuf; |
2155 | __base* __t = (__base*)&__tempbuf; |
2156 | __f_->__clone(__t); |
2157 | __f_->destroy(); |
2158 | __f_ = 0; |
2159 | __f.__f_->__clone((__base*)&__buf_); |
2160 | __f.__f_->destroy(); |
2161 | __f.__f_ = 0; |
2162 | __f_ = (__base*)&__buf_; |
2163 | __t->__clone((__base*)&__f.__buf_); |
2164 | __t->destroy(); |
2165 | __f.__f_ = (__base*)&__f.__buf_; |
2166 | } |
2167 | else if (__f_ == (__base*)&__buf_) |
2168 | { |
2169 | __f_->__clone((__base*)&__f.__buf_); |
2170 | __f_->destroy(); |
2171 | __f_ = __f.__f_; |
2172 | __f.__f_ = (__base*)&__f.__buf_; |
2173 | } |
2174 | else if (__f.__f_ == (__base*)&__f.__buf_) |
2175 | { |
2176 | __f.__f_->__clone((__base*)&__buf_); |
2177 | __f.__f_->destroy(); |
2178 | __f.__f_ = __f_; |
2179 | __f_ = (__base*)&__buf_; |
2180 | } |
2181 | else |
2182 | _VSTD::swap(__f_, __f.__f_); |
2183 | } |
2184 | |
2185 | template<class _Rp, class _A0> |
2186 | _Rp |
2187 | function<_Rp(_A0)>::operator()(_A0 __a0) const |
2188 | { |
2189 | if (__f_ == 0) |
2190 | __throw_bad_function_call(); |
2191 | return (*__f_)(__a0); |
2192 | } |
2193 | |
2194 | #ifndef _LIBCPP_NO_RTTI |
2195 | |
2196 | template<class _Rp, class _A0> |
2197 | const std::type_info& |
2198 | function<_Rp(_A0)>::target_type() const |
2199 | { |
2200 | if (__f_ == 0) |
2201 | return typeid(void); |
2202 | return __f_->target_type(); |
2203 | } |
2204 | |
2205 | template<class _Rp, class _A0> |
2206 | template <typename _Tp> |
2207 | _Tp* |
2208 | function<_Rp(_A0)>::target() |
2209 | { |
2210 | if (__f_ == 0) |
2211 | return (_Tp*)0; |
2212 | return (_Tp*) const_cast<void *>(__f_->target(typeid(_Tp))); |
2213 | } |
2214 | |
2215 | template<class _Rp, class _A0> |
2216 | template <typename _Tp> |
2217 | const _Tp* |
2218 | function<_Rp(_A0)>::target() const |
2219 | { |
2220 | if (__f_ == 0) |
2221 | return (const _Tp*)0; |
2222 | return (const _Tp*)__f_->target(typeid(_Tp)); |
2223 | } |
2224 | |
2225 | #endif // _LIBCPP_NO_RTTI |
2226 | |
2227 | template<class _Rp, class _A0, class _A1> |
2228 | class _LIBCPP_TEMPLATE_VIS function<_Rp(_A0, _A1)> |
2229 | : public binary_function<_A0, _A1, _Rp> |
2230 | { |
2231 | typedef __function::__base<_Rp(_A0, _A1)> __base; |
2232 | aligned_storage<3*sizeof(void*)>::type __buf_; |
2233 | __base* __f_; |
2234 | |
2235 | public: |
2236 | typedef _Rp result_type; |
2237 | |
2238 | // 20.7.16.2.1, construct/copy/destroy: |
2239 | _LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {} |
2240 | _LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {} |
2241 | function(const function&); |
2242 | template<class _Fp> |
2243 | function(_Fp, |
2244 | typename enable_if<!is_integral<_Fp>::value>::type* = 0); |
2245 | |
2246 | template<class _Alloc> |
2247 | _LIBCPP_INLINE_VISIBILITY |
2248 | function(allocator_arg_t, const _Alloc&) : __f_(0) {} |
2249 | template<class _Alloc> |
2250 | _LIBCPP_INLINE_VISIBILITY |
2251 | function(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {} |
2252 | template<class _Alloc> |
2253 | function(allocator_arg_t, const _Alloc&, const function&); |
2254 | template<class _Fp, class _Alloc> |
2255 | function(allocator_arg_t, const _Alloc& __a, _Fp __f, |
2256 | typename enable_if<!is_integral<_Fp>::value>::type* = 0); |
2257 | |
2258 | function& operator=(const function&); |
2259 | function& operator=(nullptr_t); |
2260 | template<class _Fp> |
2261 | typename enable_if |
2262 | < |
2263 | !is_integral<_Fp>::value, |
2264 | function& |
2265 | >::type |
2266 | operator=(_Fp); |
2267 | |
2268 | ~function(); |
2269 | |
2270 | // 20.7.16.2.2, function modifiers: |
2271 | void swap(function&); |
2272 | template<class _Fp, class _Alloc> |
2273 | _LIBCPP_INLINE_VISIBILITY |
2274 | void assign(_Fp __f, const _Alloc& __a) |
2275 | {function(allocator_arg, __a, __f).swap(*this);} |
2276 | |
2277 | // 20.7.16.2.3, function capacity: |
2278 | _LIBCPP_INLINE_VISIBILITY explicit operator bool() const {return __f_;} |
2279 | |
2280 | template<class _R2, class _B0, class _B1> |
2281 | bool operator==(const function<_R2(_B0, _B1)>&) const = delete; |
2282 | template<class _R2, class _B0, class _B1> |
2283 | bool operator!=(const function<_R2(_B0, _B1)>&) const = delete; |
2284 | |
2285 | // 20.7.16.2.4, function invocation: |
2286 | _Rp operator()(_A0, _A1) const; |
2287 | |
2288 | #ifndef _LIBCPP_NO_RTTI |
2289 | // 20.7.16.2.5, function target access: |
2290 | const std::type_info& target_type() const; |
2291 | template <typename _Tp> _Tp* target(); |
2292 | template <typename _Tp> const _Tp* target() const; |
2293 | #endif // _LIBCPP_NO_RTTI |
2294 | }; |
2295 | |
2296 | template<class _Rp, class _A0, class _A1> |
2297 | function<_Rp(_A0, _A1)>::function(const function& __f) |
2298 | { |
2299 | if (__f.__f_ == 0) |
2300 | __f_ = 0; |
2301 | else if (__f.__f_ == (const __base*)&__f.__buf_) |
2302 | { |
2303 | __f_ = (__base*)&__buf_; |
2304 | __f.__f_->__clone(__f_); |
2305 | } |
2306 | else |
2307 | __f_ = __f.__f_->__clone(); |
2308 | } |
2309 | |
2310 | template<class _Rp, class _A0, class _A1> |
2311 | template<class _Alloc> |
2312 | function<_Rp(_A0, _A1)>::function(allocator_arg_t, const _Alloc&, const function& __f) |
2313 | { |
2314 | if (__f.__f_ == 0) |
2315 | __f_ = 0; |
2316 | else if (__f.__f_ == (const __base*)&__f.__buf_) |
2317 | { |
2318 | __f_ = (__base*)&__buf_; |
2319 | __f.__f_->__clone(__f_); |
2320 | } |
2321 | else |
2322 | __f_ = __f.__f_->__clone(); |
2323 | } |
2324 | |
2325 | template<class _Rp, class _A0, class _A1> |
2326 | template <class _Fp> |
2327 | function<_Rp(_A0, _A1)>::function(_Fp __f, |
2328 | typename enable_if<!is_integral<_Fp>::value>::type*) |
2329 | : __f_(0) |
2330 | { |
2331 | if (__function::__not_null(__f)) |
2332 | { |
2333 | typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_A0, _A1)> _FF; |
2334 | if (sizeof(_FF) <= sizeof(__buf_)) |
2335 | { |
2336 | __f_ = (__base*)&__buf_; |
2337 | ::new ((void*)__f_) _FF(__f); |
2338 | } |
2339 | else |
2340 | { |
2341 | typedef allocator<_FF> _Ap; |
2342 | _Ap __a; |
2343 | typedef __allocator_destructor<_Ap> _Dp; |
2344 | unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
2345 | ::new ((void*)__hold.get()) _FF(__f, allocator<_Fp>(__a)); |
2346 | __f_ = __hold.release(); |
2347 | } |
2348 | } |
2349 | } |
2350 | |
2351 | template<class _Rp, class _A0, class _A1> |
2352 | template <class _Fp, class _Alloc> |
2353 | function<_Rp(_A0, _A1)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f, |
2354 | typename enable_if<!is_integral<_Fp>::value>::type*) |
2355 | : __f_(0) |
2356 | { |
2357 | typedef allocator_traits<_Alloc> __alloc_traits; |
2358 | if (__function::__not_null(__f)) |
2359 | { |
2360 | typedef __function::__func<_Fp, _Alloc, _Rp(_A0, _A1)> _FF; |
2361 | if (sizeof(_FF) <= sizeof(__buf_)) |
2362 | { |
2363 | __f_ = (__base*)&__buf_; |
2364 | ::new ((void*)__f_) _FF(__f, __a0); |
2365 | } |
2366 | else |
2367 | { |
2368 | typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap; |
2369 | _Ap __a(__a0); |
2370 | typedef __allocator_destructor<_Ap> _Dp; |
2371 | unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
2372 | ::new ((void*)__hold.get()) _FF(__f, _Alloc(__a)); |
2373 | __f_ = __hold.release(); |
2374 | } |
2375 | } |
2376 | } |
2377 | |
2378 | template<class _Rp, class _A0, class _A1> |
2379 | function<_Rp(_A0, _A1)>& |
2380 | function<_Rp(_A0, _A1)>::operator=(const function& __f) |
2381 | { |
2382 | if (__f) |
2383 | function(__f).swap(*this); |
2384 | else |
2385 | *this = nullptr; |
2386 | return *this; |
2387 | } |
2388 | |
2389 | template<class _Rp, class _A0, class _A1> |
2390 | function<_Rp(_A0, _A1)>& |
2391 | function<_Rp(_A0, _A1)>::operator=(nullptr_t) |
2392 | { |
2393 | __base* __t = __f_; |
2394 | __f_ = 0; |
2395 | if (__t == (__base*)&__buf_) |
2396 | __t->destroy(); |
2397 | else if (__t) |
2398 | __t->destroy_deallocate(); |
2399 | return *this; |
2400 | } |
2401 | |
2402 | template<class _Rp, class _A0, class _A1> |
2403 | template <class _Fp> |
2404 | typename enable_if |
2405 | < |
2406 | !is_integral<_Fp>::value, |
2407 | function<_Rp(_A0, _A1)>& |
2408 | >::type |
2409 | function<_Rp(_A0, _A1)>::operator=(_Fp __f) |
2410 | { |
2411 | function(_VSTD::move(__f)).swap(*this); |
2412 | return *this; |
2413 | } |
2414 | |
2415 | template<class _Rp, class _A0, class _A1> |
2416 | function<_Rp(_A0, _A1)>::~function() |
2417 | { |
2418 | if (__f_ == (__base*)&__buf_) |
2419 | __f_->destroy(); |
2420 | else if (__f_) |
2421 | __f_->destroy_deallocate(); |
2422 | } |
2423 | |
2424 | template<class _Rp, class _A0, class _A1> |
2425 | void |
2426 | function<_Rp(_A0, _A1)>::swap(function& __f) |
2427 | { |
2428 | if (_VSTD::addressof(__f) == this) |
2429 | return; |
2430 | if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_) |
2431 | { |
2432 | typename aligned_storage<sizeof(__buf_)>::type __tempbuf; |
2433 | __base* __t = (__base*)&__tempbuf; |
2434 | __f_->__clone(__t); |
2435 | __f_->destroy(); |
2436 | __f_ = 0; |
2437 | __f.__f_->__clone((__base*)&__buf_); |
2438 | __f.__f_->destroy(); |
2439 | __f.__f_ = 0; |
2440 | __f_ = (__base*)&__buf_; |
2441 | __t->__clone((__base*)&__f.__buf_); |
2442 | __t->destroy(); |
2443 | __f.__f_ = (__base*)&__f.__buf_; |
2444 | } |
2445 | else if (__f_ == (__base*)&__buf_) |
2446 | { |
2447 | __f_->__clone((__base*)&__f.__buf_); |
2448 | __f_->destroy(); |
2449 | __f_ = __f.__f_; |
2450 | __f.__f_ = (__base*)&__f.__buf_; |
2451 | } |
2452 | else if (__f.__f_ == (__base*)&__f.__buf_) |
2453 | { |
2454 | __f.__f_->__clone((__base*)&__buf_); |
2455 | __f.__f_->destroy(); |
2456 | __f.__f_ = __f_; |
2457 | __f_ = (__base*)&__buf_; |
2458 | } |
2459 | else |
2460 | _VSTD::swap(__f_, __f.__f_); |
2461 | } |
2462 | |
2463 | template<class _Rp, class _A0, class _A1> |
2464 | _Rp |
2465 | function<_Rp(_A0, _A1)>::operator()(_A0 __a0, _A1 __a1) const |
2466 | { |
2467 | if (__f_ == 0) |
2468 | __throw_bad_function_call(); |
2469 | return (*__f_)(__a0, __a1); |
2470 | } |
2471 | |
2472 | #ifndef _LIBCPP_NO_RTTI |
2473 | |
2474 | template<class _Rp, class _A0, class _A1> |
2475 | const std::type_info& |
2476 | function<_Rp(_A0, _A1)>::target_type() const |
2477 | { |
2478 | if (__f_ == 0) |
2479 | return typeid(void); |
2480 | return __f_->target_type(); |
2481 | } |
2482 | |
2483 | template<class _Rp, class _A0, class _A1> |
2484 | template <typename _Tp> |
2485 | _Tp* |
2486 | function<_Rp(_A0, _A1)>::target() |
2487 | { |
2488 | if (__f_ == 0) |
2489 | return (_Tp*)0; |
2490 | return (_Tp*) const_cast<void *>(__f_->target(typeid(_Tp))); |
2491 | } |
2492 | |
2493 | template<class _Rp, class _A0, class _A1> |
2494 | template <typename _Tp> |
2495 | const _Tp* |
2496 | function<_Rp(_A0, _A1)>::target() const |
2497 | { |
2498 | if (__f_ == 0) |
2499 | return (const _Tp*)0; |
2500 | return (const _Tp*)__f_->target(typeid(_Tp)); |
2501 | } |
2502 | |
2503 | #endif // _LIBCPP_NO_RTTI |
2504 | |
2505 | template<class _Rp, class _A0, class _A1, class _A2> |
2506 | class _LIBCPP_TEMPLATE_VIS function<_Rp(_A0, _A1, _A2)> |
2507 | { |
2508 | typedef __function::__base<_Rp(_A0, _A1, _A2)> __base; |
2509 | aligned_storage<3*sizeof(void*)>::type __buf_; |
2510 | __base* __f_; |
2511 | |
2512 | public: |
2513 | typedef _Rp result_type; |
2514 | |
2515 | // 20.7.16.2.1, construct/copy/destroy: |
2516 | _LIBCPP_INLINE_VISIBILITY explicit function() : __f_(0) {} |
2517 | _LIBCPP_INLINE_VISIBILITY function(nullptr_t) : __f_(0) {} |
2518 | function(const function&); |
2519 | template<class _Fp> |
2520 | function(_Fp, |
2521 | typename enable_if<!is_integral<_Fp>::value>::type* = 0); |
2522 | |
2523 | template<class _Alloc> |
2524 | _LIBCPP_INLINE_VISIBILITY |
2525 | function(allocator_arg_t, const _Alloc&) : __f_(0) {} |
2526 | template<class _Alloc> |
2527 | _LIBCPP_INLINE_VISIBILITY |
2528 | function(allocator_arg_t, const _Alloc&, nullptr_t) : __f_(0) {} |
2529 | template<class _Alloc> |
2530 | function(allocator_arg_t, const _Alloc&, const function&); |
2531 | template<class _Fp, class _Alloc> |
2532 | function(allocator_arg_t, const _Alloc& __a, _Fp __f, |
2533 | typename enable_if<!is_integral<_Fp>::value>::type* = 0); |
2534 | |
2535 | function& operator=(const function&); |
2536 | function& operator=(nullptr_t); |
2537 | template<class _Fp> |
2538 | typename enable_if |
2539 | < |
2540 | !is_integral<_Fp>::value, |
2541 | function& |
2542 | >::type |
2543 | operator=(_Fp); |
2544 | |
2545 | ~function(); |
2546 | |
2547 | // 20.7.16.2.2, function modifiers: |
2548 | void swap(function&); |
2549 | template<class _Fp, class _Alloc> |
2550 | _LIBCPP_INLINE_VISIBILITY |
2551 | void assign(_Fp __f, const _Alloc& __a) |
2552 | {function(allocator_arg, __a, __f).swap(*this);} |
2553 | |
2554 | // 20.7.16.2.3, function capacity: |
2555 | _LIBCPP_INLINE_VISIBILITY explicit operator bool() const {return __f_;} |
2556 | |
2557 | template<class _R2, class _B0, class _B1, class _B2> |
2558 | bool operator==(const function<_R2(_B0, _B1, _B2)>&) const = delete; |
2559 | template<class _R2, class _B0, class _B1, class _B2> |
2560 | bool operator!=(const function<_R2(_B0, _B1, _B2)>&) const = delete; |
2561 | |
2562 | // 20.7.16.2.4, function invocation: |
2563 | _Rp operator()(_A0, _A1, _A2) const; |
2564 | |
2565 | #ifndef _LIBCPP_NO_RTTI |
2566 | // 20.7.16.2.5, function target access: |
2567 | const std::type_info& target_type() const; |
2568 | template <typename _Tp> _Tp* target(); |
2569 | template <typename _Tp> const _Tp* target() const; |
2570 | #endif // _LIBCPP_NO_RTTI |
2571 | }; |
2572 | |
2573 | template<class _Rp, class _A0, class _A1, class _A2> |
2574 | function<_Rp(_A0, _A1, _A2)>::function(const function& __f) |
2575 | { |
2576 | if (__f.__f_ == 0) |
2577 | __f_ = 0; |
2578 | else if (__f.__f_ == (const __base*)&__f.__buf_) |
2579 | { |
2580 | __f_ = (__base*)&__buf_; |
2581 | __f.__f_->__clone(__f_); |
2582 | } |
2583 | else |
2584 | __f_ = __f.__f_->__clone(); |
2585 | } |
2586 | |
2587 | template<class _Rp, class _A0, class _A1, class _A2> |
2588 | template<class _Alloc> |
2589 | function<_Rp(_A0, _A1, _A2)>::function(allocator_arg_t, const _Alloc&, |
2590 | const function& __f) |
2591 | { |
2592 | if (__f.__f_ == 0) |
2593 | __f_ = 0; |
2594 | else if (__f.__f_ == (const __base*)&__f.__buf_) |
2595 | { |
2596 | __f_ = (__base*)&__buf_; |
2597 | __f.__f_->__clone(__f_); |
2598 | } |
2599 | else |
2600 | __f_ = __f.__f_->__clone(); |
2601 | } |
2602 | |
2603 | template<class _Rp, class _A0, class _A1, class _A2> |
2604 | template <class _Fp> |
2605 | function<_Rp(_A0, _A1, _A2)>::function(_Fp __f, |
2606 | typename enable_if<!is_integral<_Fp>::value>::type*) |
2607 | : __f_(0) |
2608 | { |
2609 | if (__function::__not_null(__f)) |
2610 | { |
2611 | typedef __function::__func<_Fp, allocator<_Fp>, _Rp(_A0, _A1, _A2)> _FF; |
2612 | if (sizeof(_FF) <= sizeof(__buf_)) |
2613 | { |
2614 | __f_ = (__base*)&__buf_; |
2615 | ::new ((void*)__f_) _FF(__f); |
2616 | } |
2617 | else |
2618 | { |
2619 | typedef allocator<_FF> _Ap; |
2620 | _Ap __a; |
2621 | typedef __allocator_destructor<_Ap> _Dp; |
2622 | unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
2623 | ::new ((void*)__hold.get()) _FF(__f, allocator<_Fp>(__a)); |
2624 | __f_ = __hold.release(); |
2625 | } |
2626 | } |
2627 | } |
2628 | |
2629 | template<class _Rp, class _A0, class _A1, class _A2> |
2630 | template <class _Fp, class _Alloc> |
2631 | function<_Rp(_A0, _A1, _A2)>::function(allocator_arg_t, const _Alloc& __a0, _Fp __f, |
2632 | typename enable_if<!is_integral<_Fp>::value>::type*) |
2633 | : __f_(0) |
2634 | { |
2635 | typedef allocator_traits<_Alloc> __alloc_traits; |
2636 | if (__function::__not_null(__f)) |
2637 | { |
2638 | typedef __function::__func<_Fp, _Alloc, _Rp(_A0, _A1, _A2)> _FF; |
2639 | if (sizeof(_FF) <= sizeof(__buf_)) |
2640 | { |
2641 | __f_ = (__base*)&__buf_; |
2642 | ::new ((void*)__f_) _FF(__f, __a0); |
2643 | } |
2644 | else |
2645 | { |
2646 | typedef typename __rebind_alloc_helper<__alloc_traits, _FF>::type _Ap; |
2647 | _Ap __a(__a0); |
2648 | typedef __allocator_destructor<_Ap> _Dp; |
2649 | unique_ptr<__base, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
2650 | ::new ((void*)__hold.get()) _FF(__f, _Alloc(__a)); |
2651 | __f_ = __hold.release(); |
2652 | } |
2653 | } |
2654 | } |
2655 | |
2656 | template<class _Rp, class _A0, class _A1, class _A2> |
2657 | function<_Rp(_A0, _A1, _A2)>& |
2658 | function<_Rp(_A0, _A1, _A2)>::operator=(const function& __f) |
2659 | { |
2660 | if (__f) |
2661 | function(__f).swap(*this); |
2662 | else |
2663 | *this = nullptr; |
2664 | return *this; |
2665 | } |
2666 | |
2667 | template<class _Rp, class _A0, class _A1, class _A2> |
2668 | function<_Rp(_A0, _A1, _A2)>& |
2669 | function<_Rp(_A0, _A1, _A2)>::operator=(nullptr_t) |
2670 | { |
2671 | __base* __t = __f_; |
2672 | __f_ = 0; |
2673 | if (__t == (__base*)&__buf_) |
2674 | __t->destroy(); |
2675 | else if (__t) |
2676 | __t->destroy_deallocate(); |
2677 | return *this; |
2678 | } |
2679 | |
2680 | template<class _Rp, class _A0, class _A1, class _A2> |
2681 | template <class _Fp> |
2682 | typename enable_if |
2683 | < |
2684 | !is_integral<_Fp>::value, |
2685 | function<_Rp(_A0, _A1, _A2)>& |
2686 | >::type |
2687 | function<_Rp(_A0, _A1, _A2)>::operator=(_Fp __f) |
2688 | { |
2689 | function(_VSTD::move(__f)).swap(*this); |
2690 | return *this; |
2691 | } |
2692 | |
2693 | template<class _Rp, class _A0, class _A1, class _A2> |
2694 | function<_Rp(_A0, _A1, _A2)>::~function() |
2695 | { |
2696 | if (__f_ == (__base*)&__buf_) |
2697 | __f_->destroy(); |
2698 | else if (__f_) |
2699 | __f_->destroy_deallocate(); |
2700 | } |
2701 | |
2702 | template<class _Rp, class _A0, class _A1, class _A2> |
2703 | void |
2704 | function<_Rp(_A0, _A1, _A2)>::swap(function& __f) |
2705 | { |
2706 | if (_VSTD::addressof(__f) == this) |
2707 | return; |
2708 | if (__f_ == (__base*)&__buf_ && __f.__f_ == (__base*)&__f.__buf_) |
2709 | { |
2710 | typename aligned_storage<sizeof(__buf_)>::type __tempbuf; |
2711 | __base* __t = (__base*)&__tempbuf; |
2712 | __f_->__clone(__t); |
2713 | __f_->destroy(); |
2714 | __f_ = 0; |
2715 | __f.__f_->__clone((__base*)&__buf_); |
2716 | __f.__f_->destroy(); |
2717 | __f.__f_ = 0; |
2718 | __f_ = (__base*)&__buf_; |
2719 | __t->__clone((__base*)&__f.__buf_); |
2720 | __t->destroy(); |
2721 | __f.__f_ = (__base*)&__f.__buf_; |
2722 | } |
2723 | else if (__f_ == (__base*)&__buf_) |
2724 | { |
2725 | __f_->__clone((__base*)&__f.__buf_); |
2726 | __f_->destroy(); |
2727 | __f_ = __f.__f_; |
2728 | __f.__f_ = (__base*)&__f.__buf_; |
2729 | } |
2730 | else if (__f.__f_ == (__base*)&__f.__buf_) |
2731 | { |
2732 | __f.__f_->__clone((__base*)&__buf_); |
2733 | __f.__f_->destroy(); |
2734 | __f.__f_ = __f_; |
2735 | __f_ = (__base*)&__buf_; |
2736 | } |
2737 | else |
2738 | _VSTD::swap(__f_, __f.__f_); |
2739 | } |
2740 | |
2741 | template<class _Rp, class _A0, class _A1, class _A2> |
2742 | _Rp |
2743 | function<_Rp(_A0, _A1, _A2)>::operator()(_A0 __a0, _A1 __a1, _A2 __a2) const |
2744 | { |
2745 | if (__f_ == 0) |
2746 | __throw_bad_function_call(); |
2747 | return (*__f_)(__a0, __a1, __a2); |
2748 | } |
2749 | |
2750 | #ifndef _LIBCPP_NO_RTTI |
2751 | |
2752 | template<class _Rp, class _A0, class _A1, class _A2> |
2753 | const std::type_info& |
2754 | function<_Rp(_A0, _A1, _A2)>::target_type() const |
2755 | { |
2756 | if (__f_ == 0) |
2757 | return typeid(void); |
2758 | return __f_->target_type(); |
2759 | } |
2760 | |
2761 | template<class _Rp, class _A0, class _A1, class _A2> |
2762 | template <typename _Tp> |
2763 | _Tp* |
2764 | function<_Rp(_A0, _A1, _A2)>::target() |
2765 | { |
2766 | if (__f_ == 0) |
2767 | return (_Tp*)0; |
2768 | return (_Tp*) const_cast<void *>(__f_->target(typeid(_Tp))); |
2769 | } |
2770 | |
2771 | template<class _Rp, class _A0, class _A1, class _A2> |
2772 | template <typename _Tp> |
2773 | const _Tp* |
2774 | function<_Rp(_A0, _A1, _A2)>::target() const |
2775 | { |
2776 | if (__f_ == 0) |
2777 | return (const _Tp*)0; |
2778 | return (const _Tp*)__f_->target(typeid(_Tp)); |
2779 | } |
2780 | |
2781 | #endif // _LIBCPP_NO_RTTI |
2782 | |
2783 | template <class _Fp> |
2784 | inline _LIBCPP_INLINE_VISIBILITY |
2785 | bool |
2786 | operator==(const function<_Fp>& __f, nullptr_t) {return !__f;} |
2787 | |
2788 | template <class _Fp> |
2789 | inline _LIBCPP_INLINE_VISIBILITY |
2790 | bool |
2791 | operator==(nullptr_t, const function<_Fp>& __f) {return !__f;} |
2792 | |
2793 | template <class _Fp> |
2794 | inline _LIBCPP_INLINE_VISIBILITY |
2795 | bool |
2796 | operator!=(const function<_Fp>& __f, nullptr_t) {return (bool)__f;} |
2797 | |
2798 | template <class _Fp> |
2799 | inline _LIBCPP_INLINE_VISIBILITY |
2800 | bool |
2801 | operator!=(nullptr_t, const function<_Fp>& __f) {return (bool)__f;} |
2802 | |
2803 | template <class _Fp> |
2804 | inline _LIBCPP_INLINE_VISIBILITY |
2805 | void |
2806 | swap(function<_Fp>& __x, function<_Fp>& __y) |
2807 | {return __x.swap(__y);} |
2808 | |
2809 | #endif // _LIBCPP_CXX03_LANG |
2810 | |
2811 | _LIBCPP_END_NAMESPACE_STD |
2812 | |
2813 | #endif // _LIBCPP___FUNCTIONAL_FUNCTION_H |
2814 | |