1 //===-------------------------- ios.cpp -----------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
18 #include "include/config_elast.h"
25 #include "__undef_macros"
27 _LIBCPP_BEGIN_NAMESPACE_STD
29 template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ios<char>;
30 template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ios<wchar_t>;
32 template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_streambuf<char>;
33 template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_streambuf<wchar_t>;
35 template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_istream<char>;
36 template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_istream<wchar_t>;
38 template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ostream<char>;
39 template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ostream<wchar_t>;
41 template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_iostream<char>;
43 class _LIBCPP_HIDDEN __iostream_category
47 virtual const char* name() const _NOEXCEPT;
48 virtual string message(int ev) const;
52 __iostream_category::name() const _NOEXCEPT
58 __iostream_category::message(int ev) const
60 if (ev != static_cast<int>(io_errc::stream)
62 && ev <= _LIBCPP_ELAST
63 #endif // _LIBCPP_ELAST
65 return __do_message::message(ev);
66 return string("unspecified iostream_category error");
70 iostream_category() _NOEXCEPT
72 static __iostream_category s;
78 ios_base::failure::failure(const string& msg, const error_code& ec)
79 : system_error(ec, msg)
83 ios_base::failure::failure(const char* msg, const error_code& ec)
84 : system_error(ec, msg)
88 ios_base::failure::~failure() throw()
94 const ios_base::fmtflags ios_base::boolalpha;
95 const ios_base::fmtflags ios_base::dec;
96 const ios_base::fmtflags ios_base::fixed;
97 const ios_base::fmtflags ios_base::hex;
98 const ios_base::fmtflags ios_base::internal;
99 const ios_base::fmtflags ios_base::left;
100 const ios_base::fmtflags ios_base::oct;
101 const ios_base::fmtflags ios_base::right;
102 const ios_base::fmtflags ios_base::scientific;
103 const ios_base::fmtflags ios_base::showbase;
104 const ios_base::fmtflags ios_base::showpoint;
105 const ios_base::fmtflags ios_base::showpos;
106 const ios_base::fmtflags ios_base::skipws;
107 const ios_base::fmtflags ios_base::unitbuf;
108 const ios_base::fmtflags ios_base::uppercase;
109 const ios_base::fmtflags ios_base::adjustfield;
110 const ios_base::fmtflags ios_base::basefield;
111 const ios_base::fmtflags ios_base::floatfield;
113 const ios_base::iostate ios_base::badbit;
114 const ios_base::iostate ios_base::eofbit;
115 const ios_base::iostate ios_base::failbit;
116 const ios_base::iostate ios_base::goodbit;
118 const ios_base::openmode ios_base::app;
119 const ios_base::openmode ios_base::ate;
120 const ios_base::openmode ios_base::binary;
121 const ios_base::openmode ios_base::in;
122 const ios_base::openmode ios_base::out;
123 const ios_base::openmode ios_base::trunc;
126 ios_base::__call_callbacks(event ev)
128 for (size_t i = __event_size_; i;)
131 __fn_[i](ev, *this, __index_[i]);
138 ios_base::imbue(const locale& newloc)
140 static_assert(sizeof(locale) == sizeof(__loc_), "");
141 locale& loc_storage = *reinterpret_cast<locale*>(&__loc_);
142 locale oldloc = loc_storage;
143 loc_storage = newloc;
144 __call_callbacks(imbue_event);
149 ios_base::getloc() const
151 const locale& loc_storage = *reinterpret_cast<const locale*>(&__loc_);
156 #if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
157 atomic<int> ios_base::__xindex_ = ATOMIC_VAR_INIT(0);
159 int ios_base::__xindex_ = 0;
162 template <typename _Tp>
163 static size_t __ios_new_cap(size_t __req_size, size_t __current_cap)
164 { // Precondition: __req_size > __current_cap
165 const size_t mx = std::numeric_limits<size_t>::max() / sizeof(_Tp);
166 if (__req_size < mx/2)
167 return _VSTD::max(2 * __current_cap, __req_size);
179 ios_base::iword(int index)
181 size_t req_size = static_cast<size_t>(index)+1;
182 if (req_size > __iarray_cap_)
184 size_t newcap = __ios_new_cap<long>(req_size, __iarray_cap_);
185 long* iarray = static_cast<long*>(realloc(__iarray_, newcap * sizeof(long)));
194 for (long* p = __iarray_ + __iarray_size_; p < __iarray_ + newcap; ++p)
196 __iarray_cap_ = newcap;
198 __iarray_size_ = max<size_t>(__iarray_size_, req_size);
199 return __iarray_[index];
203 ios_base::pword(int index)
205 size_t req_size = static_cast<size_t>(index)+1;
206 if (req_size > __parray_cap_)
208 size_t newcap = __ios_new_cap<void *>(req_size, __iarray_cap_);
209 void** parray = static_cast<void**>(realloc(__parray_, newcap * sizeof(void *)));
218 for (void** p = __parray_ + __parray_size_; p < __parray_ + newcap; ++p)
220 __parray_cap_ = newcap;
222 __parray_size_ = max<size_t>(__parray_size_, req_size);
223 return __parray_[index];
229 ios_base::register_callback(event_callback fn, int index)
231 size_t req_size = __event_size_ + 1;
232 if (req_size > __event_cap_)
234 size_t newcap = __ios_new_cap<event_callback>(req_size, __event_cap_);
235 event_callback* fns = static_cast<event_callback*>(realloc(__fn_, newcap * sizeof(event_callback)));
239 int* indxs = static_cast<int *>(realloc(__index_, newcap * sizeof(int)));
243 __event_cap_ = newcap;
245 __fn_[__event_size_] = fn;
246 __index_[__event_size_] = index;
250 ios_base::~ios_base()
252 __call_callbacks(erase_event);
253 locale& loc_storage = *reinterpret_cast<locale*>(&__loc_);
254 loc_storage.~locale();
264 ios_base::clear(iostate state)
269 __rdstate_ = state | badbit;
270 #ifndef _LIBCPP_NO_EXCEPTIONS
271 if (((state | (__rdbuf_ ? goodbit : badbit)) & __exceptions_) != 0)
272 throw failure("ios_base::clear");
273 #endif // _LIBCPP_NO_EXCEPTIONS
279 ios_base::init(void* sb)
282 __rdstate_ = __rdbuf_ ? goodbit : badbit;
283 __exceptions_ = goodbit;
284 __fmtflags_ = skipws | dec;
297 ::new(&__loc_) locale;
301 ios_base::copyfmt(const ios_base& rhs)
303 // If we can't acquire the needed resources, throw bad_alloc (can't set badbit)
304 // Don't alter *this until all needed resources are acquired
305 unique_ptr<event_callback, void (*)(void*)> new_callbacks(0, free);
306 unique_ptr<int, void (*)(void*)> new_ints(0, free);
307 unique_ptr<long, void (*)(void*)> new_longs(0, free);
308 unique_ptr<void*, void (*)(void*)> new_pointers(0, free);
309 if (__event_cap_ < rhs.__event_size_)
311 size_t newesize = sizeof(event_callback) * rhs.__event_size_;
312 new_callbacks.reset(static_cast<event_callback*>(malloc(newesize)));
313 #ifndef _LIBCPP_NO_EXCEPTIONS
316 #endif // _LIBCPP_NO_EXCEPTIONS
318 size_t newisize = sizeof(int) * rhs.__event_size_;
319 new_ints.reset(static_cast<int *>(malloc(newisize)));
320 #ifndef _LIBCPP_NO_EXCEPTIONS
323 #endif // _LIBCPP_NO_EXCEPTIONS
325 if (__iarray_cap_ < rhs.__iarray_size_)
327 size_t newsize = sizeof(long) * rhs.__iarray_size_;
328 new_longs.reset(static_cast<long*>(malloc(newsize)));
329 #ifndef _LIBCPP_NO_EXCEPTIONS
332 #endif // _LIBCPP_NO_EXCEPTIONS
334 if (__parray_cap_ < rhs.__parray_size_)
336 size_t newsize = sizeof(void*) * rhs.__parray_size_;
337 new_pointers.reset(static_cast<void**>(malloc(newsize)));
338 #ifndef _LIBCPP_NO_EXCEPTIONS
341 #endif // _LIBCPP_NO_EXCEPTIONS
343 // Got everything we need. Copy everything but __rdstate_, __rdbuf_ and __exceptions_
344 __fmtflags_ = rhs.__fmtflags_;
345 __precision_ = rhs.__precision_;
346 __width_ = rhs.__width_;
347 locale& lhs_loc = *reinterpret_cast<locale*>(&__loc_);
348 const locale& rhs_loc = *reinterpret_cast<const locale*>(&rhs.__loc_);
350 if (__event_cap_ < rhs.__event_size_)
353 __fn_ = new_callbacks.release();
355 __index_ = new_ints.release();
356 __event_cap_ = rhs.__event_size_;
358 for (__event_size_ = 0; __event_size_ < rhs.__event_size_; ++__event_size_)
360 __fn_[__event_size_] = rhs.__fn_[__event_size_];
361 __index_[__event_size_] = rhs.__index_[__event_size_];
363 if (__iarray_cap_ < rhs.__iarray_size_)
366 __iarray_ = new_longs.release();
367 __iarray_cap_ = rhs.__iarray_size_;
369 for (__iarray_size_ = 0; __iarray_size_ < rhs.__iarray_size_; ++__iarray_size_)
370 __iarray_[__iarray_size_] = rhs.__iarray_[__iarray_size_];
371 if (__parray_cap_ < rhs.__parray_size_)
374 __parray_ = new_pointers.release();
375 __parray_cap_ = rhs.__parray_size_;
377 for (__parray_size_ = 0; __parray_size_ < rhs.__parray_size_; ++__parray_size_)
378 __parray_[__parray_size_] = rhs.__parray_[__parray_size_];
382 ios_base::move(ios_base& rhs)
384 // *this is uninitialized
385 __fmtflags_ = rhs.__fmtflags_;
386 __precision_ = rhs.__precision_;
387 __width_ = rhs.__width_;
388 __rdstate_ = rhs.__rdstate_;
389 __exceptions_ = rhs.__exceptions_;
391 locale& rhs_loc = *reinterpret_cast<locale*>(&rhs.__loc_);
392 ::new(&__loc_) locale(rhs_loc);
395 __index_ = rhs.__index_;
397 __event_size_ = rhs.__event_size_;
398 rhs.__event_size_ = 0;
399 __event_cap_ = rhs.__event_cap_;
400 rhs.__event_cap_ = 0;
401 __iarray_ = rhs.__iarray_;
403 __iarray_size_ = rhs.__iarray_size_;
404 rhs.__iarray_size_ = 0;
405 __iarray_cap_ = rhs.__iarray_cap_;
406 rhs.__iarray_cap_ = 0;
407 __parray_ = rhs.__parray_;
409 __parray_size_ = rhs.__parray_size_;
410 rhs.__parray_size_ = 0;
411 __parray_cap_ = rhs.__parray_cap_;
412 rhs.__parray_cap_ = 0;
416 ios_base::swap(ios_base& rhs) _NOEXCEPT
418 _VSTD::swap(__fmtflags_, rhs.__fmtflags_);
419 _VSTD::swap(__precision_, rhs.__precision_);
420 _VSTD::swap(__width_, rhs.__width_);
421 _VSTD::swap(__rdstate_, rhs.__rdstate_);
422 _VSTD::swap(__exceptions_, rhs.__exceptions_);
423 locale& lhs_loc = *reinterpret_cast<locale*>(&__loc_);
424 locale& rhs_loc = *reinterpret_cast<locale*>(&rhs.__loc_);
425 _VSTD::swap(lhs_loc, rhs_loc);
426 _VSTD::swap(__fn_, rhs.__fn_);
427 _VSTD::swap(__index_, rhs.__index_);
428 _VSTD::swap(__event_size_, rhs.__event_size_);
429 _VSTD::swap(__event_cap_, rhs.__event_cap_);
430 _VSTD::swap(__iarray_, rhs.__iarray_);
431 _VSTD::swap(__iarray_size_, rhs.__iarray_size_);
432 _VSTD::swap(__iarray_cap_, rhs.__iarray_cap_);
433 _VSTD::swap(__parray_, rhs.__parray_);
434 _VSTD::swap(__parray_size_, rhs.__parray_size_);
435 _VSTD::swap(__parray_cap_, rhs.__parray_cap_);
439 ios_base::__set_badbit_and_consider_rethrow()
441 __rdstate_ |= badbit;
442 #ifndef _LIBCPP_NO_EXCEPTIONS
443 if (__exceptions_ & badbit)
445 #endif // _LIBCPP_NO_EXCEPTIONS
449 ios_base::__set_failbit_and_consider_rethrow()
451 __rdstate_ |= failbit;
452 #ifndef _LIBCPP_NO_EXCEPTIONS
453 if (__exceptions_ & failbit)
455 #endif // _LIBCPP_NO_EXCEPTIONS
459 ios_base::sync_with_stdio(bool sync)
461 static bool previous_state = true;
462 bool r = previous_state;
463 previous_state = sync;
467 _LIBCPP_END_NAMESPACE_STD