//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <__config>
#include <__locale>
#include <algorithm>
#include <ios>
#include <limits>
#include <memory>
#include <new>
#include <stdlib.h>
#include <string>
#include "include/config_elast.h"
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
class _LIBCPP_HIDDEN __iostream_category : public __do_message {
public:
virtual const char* name() const noexcept;
virtual string message(int ev) const;
};
const char* __iostream_category::name() const noexcept { return "iostream"; }
string __iostream_category::message(int ev) const {
if (ev != static_cast<int>(io_errc::stream)
#ifdef _LIBCPP_ELAST
&& ev <= _LIBCPP_ELAST
#endif // _LIBCPP_ELAST
)
return __do_message::message(ev);
return string("unspecified iostream_category error");
}
const error_category& iostream_category() noexcept {
union AvoidDestroyingIostreamCategory {
__iostream_category iostream_error_category;
constexpr explicit AvoidDestroyingIostreamCategory() : iostream_error_category() {}
~AvoidDestroyingIostreamCategory() {}
};
constinit static AvoidDestroyingIostreamCategory helper;
return helper.iostream_error_category;
}
// ios_base::failure
ios_base::failure::failure(const string& msg, const error_code& ec) : system_error(ec, msg) {}
ios_base::failure::failure(const char* msg, const error_code& ec) : system_error(ec, msg) {}
ios_base::failure::~failure() throw() {}
// ios_base locale
const ios_base::fmtflags ios_base::boolalpha;
const ios_base::fmtflags ios_base::dec;
const ios_base::fmtflags ios_base::fixed;
const ios_base::fmtflags ios_base::hex;
const ios_base::fmtflags ios_base::internal;
const ios_base::fmtflags ios_base::left;
const ios_base::fmtflags ios_base::oct;
const ios_base::fmtflags ios_base::right;
const ios_base::fmtflags ios_base::scientific;
const ios_base::fmtflags ios_base::showbase;
const ios_base::fmtflags ios_base::showpoint;
const ios_base::fmtflags ios_base::showpos;
const ios_base::fmtflags ios_base::skipws;
const ios_base::fmtflags ios_base::unitbuf;
const ios_base::fmtflags ios_base::uppercase;
const ios_base::fmtflags ios_base::adjustfield;
const ios_base::fmtflags ios_base::basefield;
const ios_base::fmtflags ios_base::floatfield;
const ios_base::iostate ios_base::badbit;
const ios_base::iostate ios_base::eofbit;
const ios_base::iostate ios_base::failbit;
const ios_base::iostate ios_base::goodbit;
const ios_base::openmode ios_base::app;
const ios_base::openmode ios_base::ate;
const ios_base::openmode ios_base::binary;
const ios_base::openmode ios_base::in;
const ios_base::openmode ios_base::out;
const ios_base::openmode ios_base::trunc;
void ios_base::__call_callbacks(event ev) {
for (size_t i = __event_size_; i;) {
--i;
__fn_[i](ev, *this, __index_[i]);
}
}
// locale
locale ios_base::imbue(const locale& newloc) {
static_assert(sizeof(locale) == sizeof(__loc_), "");
locale& loc_storage = *reinterpret_cast<locale*>(&__loc_);
locale oldloc = loc_storage;
loc_storage = newloc;
__call_callbacks(imbue_event);
return oldloc;
}
locale ios_base::getloc() const {
const locale& loc_storage = *reinterpret_cast<const locale*>(&__loc_);
return loc_storage;
}
// xalloc
#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
atomic<int> ios_base::__xindex_{0};
#else
int ios_base::__xindex_ = 0;
#endif
template <typename _Tp>
static size_t __ios_new_cap(size_t __req_size, size_t __current_cap) { // Precondition: __req_size > __current_cap
const size_t mx = std::numeric_limits<size_t>::max() / sizeof(_Tp);
if (__req_size < mx / 2)
return std::max(2 * __current_cap, __req_size);
else
return mx;
}
int ios_base::xalloc() { return __xindex_++; }
long& ios_base::iword(int index) {
size_t req_size = static_cast<size_t>(index) + 1;
if (req_size > __iarray_cap_) {
size_t newcap = __ios_new_cap<long>(req_size, __iarray_cap_);
long* iarray = static_cast<long*>(realloc(__iarray_, newcap * sizeof(long)));
if (iarray == 0) {
setstate(badbit);
static long error;
error = 0;
return error;
}
__iarray_ = iarray;
for (long* p = __iarray_ + __iarray_size_; p < __iarray_ + newcap; ++p)
*p = 0;
__iarray_cap_ = newcap;
}
__iarray_size_ = max<size_t>(__iarray_size_, req_size);
return __iarray_[index];
}
void*& ios_base::pword(int index) {
size_t req_size = static_cast<size_t>(index) + 1;
if (req_size > __parray_cap_) {
size_t newcap = __ios_new_cap<void*>(req_size, __iarray_cap_);
void** parray = static_cast<void**>(realloc(__parray_, newcap * sizeof(void*)));
if (parray == 0) {
setstate(badbit);
static void* error;
error = 0;
return error;
}
__parray_ = parray;
for (void** p = __parray_ + __parray_size_; p < __parray_ + newcap; ++p)
*p = 0;
__parray_cap_ = newcap;
}
__parray_size_ = max<size_t>(__parray_size_, req_size);
return __parray_[index];
}
// register_callback
void ios_base::register_callback(event_callback fn, int index) {
size_t req_size = __event_size_ + 1;
if (req_size > __event_cap_) {
size_t newcap = __ios_new_cap<event_callback>(req_size, __event_cap_);
event_callback* fns = static_cast<event_callback*>(realloc(__fn_, newcap * sizeof(event_callback)));
if (fns == 0)
setstate(badbit);
__fn_ = fns;
int* indxs = static_cast<int*>(realloc(__index_, newcap * sizeof(int)));
if (indxs == 0)
setstate(badbit);
__index_ = indxs;
__event_cap_ = newcap;
}
__fn_[__event_size_] = fn;
__index_[__event_size_] = index;
++__event_size_;
}
ios_base::~ios_base() {
// Avoid UB when not properly initialized. See ios_base::ios_base for
// more information.
if (!__loc_)
return;
__call_callbacks(erase_event);
locale& loc_storage = *reinterpret_cast<locale*>(&__loc_);
loc_storage.~locale();
free(__fn_);
free(__index_);
free(__iarray_);
free(__parray_);
}
// iostate
void ios_base::clear(iostate state) {
if (__rdbuf_)
__rdstate_ = state;
else
__rdstate_ = state | badbit;
if (((state | (__rdbuf_ ? goodbit : badbit)) & __exceptions_) != 0)
__throw_failure("ios_base::clear");
}
// init
void ios_base::init(void* sb) {
__rdbuf_ = sb;
__rdstate_ = __rdbuf_ ? goodbit : badbit;
__exceptions_ = goodbit;
__fmtflags_ = skipws | dec;
__width_ = 0;
__precision_ = 6;
__fn_ = 0;
__index_ = 0;
__event_size_ = 0;
__event_cap_ = 0;
__iarray_ = 0;
__iarray_size_ = 0;
__iarray_cap_ = 0;
__parray_ = 0;
__parray_size_ = 0;
__parray_cap_ = 0;
::new (&__loc_) locale;
}
void ios_base::copyfmt(const ios_base& rhs) {
// If we can't acquire the needed resources, throw bad_alloc (can't set badbit)
// Don't alter *this until all needed resources are acquired
unique_ptr<event_callback, void (*)(void*)> new_callbacks(0, free);
unique_ptr<int, void (*)(void*)> new_ints(0, free);
unique_ptr<long, void (*)(void*)> new_longs(0, free);
unique_ptr<void*, void (*)(void*)> new_pointers(0, free);
if (__event_cap_ < rhs.__event_size_) {
size_t newesize = sizeof(event_callback) * rhs.__event_size_;
new_callbacks.reset(static_cast<event_callback*>(malloc(newesize)));
if (!new_callbacks)
__throw_bad_alloc();
size_t newisize = sizeof(int) * rhs.__event_size_;
new_ints.reset(static_cast<int*>(malloc(newisize)));
if (!new_ints)
__throw_bad_alloc();
}
if (__iarray_cap_ < rhs.__iarray_size_) {
size_t newsize = sizeof(long) * rhs.__iarray_size_;
new_longs.reset(static_cast<long*>(malloc(newsize)));
if (!new_longs)
__throw_bad_alloc();
}
if (__parray_cap_ < rhs.__parray_size_) {
size_t newsize = sizeof(void*) * rhs.__parray_size_;
new_pointers.reset(static_cast<void**>(malloc(newsize)));
if (!new_pointers)
__throw_bad_alloc();
}
// Got everything we need. Copy everything but __rdstate_, __rdbuf_ and __exceptions_
__fmtflags_ = rhs.__fmtflags_;
__precision_ = rhs.__precision_;
__width_ = rhs.__width_;
locale& lhs_loc = *reinterpret_cast<locale*>(&__loc_);
const locale& rhs_loc = *reinterpret_cast<const locale*>(&rhs.__loc_);
lhs_loc = rhs_loc;
if (__event_cap_ < rhs.__event_size_) {
free(__fn_);
__fn_ = new_callbacks.release();
free(__index_);
__index_ = new_ints.release();
__event_cap_ = rhs.__event_size_;
}
for (__event_size_ = 0; __event_size_ < rhs.__event_size_; ++__event_size_) {
__fn_[__event_size_] = rhs.__fn_[__event_size_];
__index_[__event_size_] = rhs.__index_[__event_size_];
}
if (__iarray_cap_ < rhs.__iarray_size_) {
free(__iarray_);
__iarray_ = new_longs.release();
__iarray_cap_ = rhs.__iarray_size_;
}
for (__iarray_size_ = 0; __iarray_size_ < rhs.__iarray_size_; ++__iarray_size_)
__iarray_[__iarray_size_] = rhs.__iarray_[__iarray_size_];
if (__parray_cap_ < rhs.__parray_size_) {
free(__parray_);
__parray_ = new_pointers.release();
__parray_cap_ = rhs.__parray_size_;
}
for (__parray_size_ = 0; __parray_size_ < rhs.__parray_size_; ++__parray_size_)
__parray_[__parray_size_] = rhs.__parray_[__parray_size_];
}
void ios_base::move(ios_base& rhs) {
// *this is uninitialized
__fmtflags_ = rhs.__fmtflags_;
__precision_ = rhs.__precision_;
__width_ = rhs.__width_;
__rdstate_ = rhs.__rdstate_;
__exceptions_ = rhs.__exceptions_;
__rdbuf_ = 0;
locale& rhs_loc = *reinterpret_cast<locale*>(&rhs.__loc_);
::new (&__loc_) locale(rhs_loc);
__fn_ = rhs.__fn_;
rhs.__fn_ = 0;
__index_ = rhs.__index_;
rhs.__index_ = 0;
__event_size_ = rhs.__event_size_;
rhs.__event_size_ = 0;
__event_cap_ = rhs.__event_cap_;
rhs.__event_cap_ = 0;
__iarray_ = rhs.__iarray_;
rhs.__iarray_ = 0;
__iarray_size_ = rhs.__iarray_size_;
rhs.__iarray_size_ = 0;
__iarray_cap_ = rhs.__iarray_cap_;
rhs.__iarray_cap_ = 0;
__parray_ = rhs.__parray_;
rhs.__parray_ = 0;
__parray_size_ = rhs.__parray_size_;
rhs.__parray_size_ = 0;
__parray_cap_ = rhs.__parray_cap_;
rhs.__parray_cap_ = 0;
}
void ios_base::swap(ios_base& rhs) noexcept {
std::swap(__fmtflags_, rhs.__fmtflags_);
std::swap(__precision_, rhs.__precision_);
std::swap(__width_, rhs.__width_);
std::swap(__rdstate_, rhs.__rdstate_);
std::swap(__exceptions_, rhs.__exceptions_);
locale& lhs_loc = *reinterpret_cast<locale*>(&__loc_);
locale& rhs_loc = *reinterpret_cast<locale*>(&rhs.__loc_);
std::swap(lhs_loc, rhs_loc);
std::swap(__fn_, rhs.__fn_);
std::swap(__index_, rhs.__index_);
std::swap(__event_size_, rhs.__event_size_);
std::swap(__event_cap_, rhs.__event_cap_);
std::swap(__iarray_, rhs.__iarray_);
std::swap(__iarray_size_, rhs.__iarray_size_);
std::swap(__iarray_cap_, rhs.__iarray_cap_);
std::swap(__parray_, rhs.__parray_);
std::swap(__parray_size_, rhs.__parray_size_);
std::swap(__parray_cap_, rhs.__parray_cap_);
}
void ios_base::__set_badbit_and_consider_rethrow() {
__rdstate_ |= badbit;
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
if (__exceptions_ & badbit)
throw;
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
}
void ios_base::__set_failbit_and_consider_rethrow() {
__rdstate_ |= failbit;
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
if (__exceptions_ & failbit)
throw;
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
}
bool ios_base::sync_with_stdio(bool sync) {
static bool previous_state = true;
bool r = previous_state;
previous_state = sync;
return r;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
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