//usr/include/c++/11/bits
146 items
NAME ↑ SIZE MODIFIED PERMS ACTIONS
.. / Parent Directory
algorithmfwd.h — 23.97 KB
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align.h — 3.62 KB
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alloc_traits.h — 26.98 KB
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allocated_ptr.h — 3.25 KB
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allocator.h — 9.51 KB
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atomic_base.h — 56.07 KB
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atomic_futex.h — 12.1 KB
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atomic_lockfree_defines.h — 2.3 KB
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atomic_timed_wait.h — 13.21 KB
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atomic_wait.h — 12.26 KB
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basic_ios.h — 15.7 KB
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basic_ios.tcc — 5.94 KB
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basic_string.h — 246.04 KB
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basic_string.tcc — 52.92 KB
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boost_concept_check.h — 26.54 KB
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c++0x_warning.h — 1.44 KB
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char_traits.h — 28.66 KB
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charconv.h — 3.35 KB
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codecvt.h — 24.9 KB
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concept_check.h — 3.34 KB
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cpp_type_traits.h — 13.67 KB
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cxxabi_forced.h — 1.77 KB
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cxxabi_init_exception.h — 2.17 KB
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deque.tcc — 41.37 KB
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enable_special_members.h — 12.16 KB
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erase_if.h — 2.02 KB
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exception.h — 2.45 KB
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exception_defines.h — 1.61 KB
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exception_ptr.h — 7.46 KB
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forward_list.h — 49.21 KB
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forward_list.tcc — 13.71 KB
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fs_dir.h — 16.23 KB
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fs_fwd.h — 10.65 KB
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fs_ops.h — 10.49 KB
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fs_path.h — 39.49 KB
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fstream.tcc — 32.88 KB
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functexcept.h — 3.43 KB
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functional_hash.h — 8.39 KB
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gslice.h — 5.39 KB
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gslice_array.h — 7.71 KB
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hash_bytes.h — 2.1 KB
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hashtable.h — 82.94 KB
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hashtable_policy.h — 60.84 KB
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indirect_array.h — 7.72 KB
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invoke.h — 5.92 KB
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ios_base.h — 31.19 KB
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istream.tcc — 30.85 KB
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iterator_concepts.h — 32.55 KB
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list.tcc — 16.8 KB
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locale_classes.h — 24.46 KB
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locale_classes.tcc — 8.18 KB
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locale_conv.h — 18.38 KB
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locale_facets.h — 91.46 KB
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locale_facets.tcc — 39.51 KB
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locale_facets_nonio.h — 68.07 KB
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locale_facets_nonio.tcc — 46.42 KB
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localefwd.h — 5.8 KB
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mask_array.h — 7.54 KB
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max_size_type.h — 22.18 KB
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memoryfwd.h — 2.45 KB
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move.h — 6.64 KB
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nested_exception.h — 4.77 KB
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node_handle.h — 11.07 KB
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ostream.tcc — 12.03 KB
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ostream_insert.h — 3.94 KB
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parse_numbers.h — 7.79 KB
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postypes.h — 8.27 KB
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predefined_ops.h — 9.94 KB
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ptr_traits.h — 6.55 KB
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quoted_string.h — 4.93 KB
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random.h — 174.18 KB
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random.tcc — 103.21 KB
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range_access.h — 10.46 KB
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ranges_algo.h — 114.09 KB
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ranges_algobase.h — 18.43 KB
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ranges_base.h — 23.82 KB
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ranges_cmp.h — 5.88 KB
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ranges_uninitialized.h — 17.71 KB
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ranges_util.h — 20.11 KB
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refwrap.h — 12.9 KB
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regex.h — 101.53 KB
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regex.tcc — 16.11 KB
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regex_automaton.h — 10.54 KB
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regex_automaton.tcc — 7.54 KB
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regex_compiler.h — 15.84 KB
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regex_compiler.tcc — 18.71 KB
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regex_constants.h — 15.18 KB
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regex_error.h — 4.9 KB
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regex_executor.h — 8.64 KB
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regex_executor.tcc — 18.4 KB
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regex_scanner.h — 6.88 KB
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regex_scanner.tcc — 14.89 KB
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semaphore_base.h — 7.75 KB
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shared_ptr.h — 30.25 KB
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shared_ptr_atomic.h — 9.64 KB
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shared_ptr_base.h — 53.62 KB
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slice_array.h — 9.39 KB
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specfun.h — 46.13 KB
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sstream.tcc — 9.91 KB
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std_abs.h — 3.28 KB
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std_function.h — 22.33 KB
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std_mutex.h — 6.29 KB
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std_thread.h — 8.39 KB
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stl_algo.h — 209.67 KB
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stl_algobase.h — 74.6 KB
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stl_bvector.h — 34.74 KB
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stl_construct.h — 8.59 KB
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stl_deque.h — 75.17 KB
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stl_function.h — 42.87 KB
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stl_heap.h — 20.27 KB
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stl_iterator.h — 77 KB
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stl_iterator_base_funcs.h — 7.99 KB
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stl_iterator_base_types.h — 9.44 KB
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stl_list.h — 68.14 KB
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stl_map.h — 53.41 KB
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stl_multimap.h — 42.51 KB
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stl_multiset.h — 36.79 KB
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stl_numeric.h — 14.26 KB
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stl_pair.h — 19.66 KB
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stl_queue.h — 24.45 KB
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stl_raw_storage_iter.h — 3.74 KB
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stl_relops.h — 4.49 KB
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stl_set.h — 37.05 KB
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stl_stack.h — 12.39 KB
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stl_tempbuf.h — 8.45 KB
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stl_tree.h — 72.16 KB
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stl_uninitialized.h — 33.22 KB
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stl_vector.h — 64.37 KB
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stream_iterator.h — 7.52 KB
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streambuf.tcc — 4.81 KB
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streambuf_iterator.h — 15.17 KB
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string_view.tcc — 7 KB
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stringfwd.h — 2.63 KB
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this_thread_sleep.h — 3.23 KB
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uniform_int_dist.h — 12.75 KB
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unique_lock.h — 6 KB
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unique_ptr.h — 31.77 KB
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unordered_map.h — 74.87 KB
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unordered_set.h — 61.46 KB
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uses_allocator.h — 6.74 KB
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uses_allocator_args.h — 7.38 KB
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valarray_after.h — 22.74 KB
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valarray_array.h — 20.8 KB
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valarray_array.tcc — 7.08 KB
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valarray_before.h — 18.69 KB
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vector.tcc — 30.26 KB
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// Iostreams base classes -*- C++ -*- // Copyright (C) 1997-2021 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // . /** @file bits/basic_ios.h * This is an internal header file, included by other library headers. * Do not attempt to use it directly. @headername{ios} */ #ifndef _BASIC_IOS_H #define _BASIC_IOS_H 1 #pragma GCC system_header #include #include #include #include #include namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION template inline const _Facet& __check_facet(const _Facet* __f) { if (!__f) __throw_bad_cast(); return *__f; } /** * @brief Template class basic_ios, virtual base class for all * stream classes. * @ingroup io * * @tparam _CharT Type of character stream. * @tparam _Traits Traits for character type, defaults to * char_traits<_CharT>. * * Most of the member functions called dispatched on stream objects * (e.g., @c std::cout.foo(bar);) are consolidated in this class. */ template class basic_ios : public ios_base { public: ///@{ /** * These are standard types. They permit a standardized way of * referring to names of (or names dependent on) the template * parameters, which are specific to the implementation. */ typedef _CharT char_type; typedef typename _Traits::int_type int_type; typedef typename _Traits::pos_type pos_type; typedef typename _Traits::off_type off_type; typedef _Traits traits_type; ///@} ///@{ /** * These are non-standard types. */ typedef ctype<_CharT> __ctype_type; typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > __num_put_type; typedef num_get<_CharT, istreambuf_iterator<_CharT, _Traits> > __num_get_type; ///@} // Data members: protected: basic_ostream<_CharT, _Traits>* _M_tie; mutable char_type _M_fill; mutable bool _M_fill_init; basic_streambuf<_CharT, _Traits>* _M_streambuf; // Cached use_facet, which is based on the current locale info. const __ctype_type* _M_ctype; // For ostream. const __num_put_type* _M_num_put; // For istream. const __num_get_type* _M_num_get; public: ///@{ /** * @brief The quick-and-easy status check. * * This allows you to write constructs such as * if (!a_stream) ... and while (a_stream) ... */ #if __cplusplus >= 201103L explicit operator bool() const { return !this->fail(); } #else operator void*() const { return this->fail() ? 0 : const_cast(this); } #endif bool operator!() const { return this->fail(); } ///@} /** * @brief Returns the error state of the stream buffer. * @return A bit pattern (well, isn't everything?) * * See std::ios_base::iostate for the possible bit values. Most * users will call one of the interpreting wrappers, e.g., good(). */ iostate rdstate() const { return _M_streambuf_state; } /** * @brief [Re]sets the error state. * @param __state The new state flag(s) to set. * * See std::ios_base::iostate for the possible bit values. Most * users will not need to pass an argument. */ void clear(iostate __state = goodbit); /** * @brief Sets additional flags in the error state. * @param __state The additional state flag(s) to set. * * See std::ios_base::iostate for the possible bit values. */ void setstate(iostate __state) { this->clear(this->rdstate() | __state); } // Flip the internal state on for the proper state bits, then // rethrows the propagated exception if bit also set in // exceptions(). void _M_setstate(iostate __state) { // 27.6.1.2.1 Common requirements. // Turn this on without causing an ios::failure to be thrown. _M_streambuf_state |= __state; if (this->exceptions() & __state) __throw_exception_again; } /** * @brief Fast error checking. * @return True if no error flags are set. * * A wrapper around rdstate. */ bool good() const { return this->rdstate() == 0; } /** * @brief Fast error checking. * @return True if the eofbit is set. * * Note that other iostate flags may also be set. */ bool eof() const { return (this->rdstate() & eofbit) != 0; } /** * @brief Fast error checking. * @return True if either the badbit or the failbit is set. * * Checking the badbit in fail() is historical practice. * Note that other iostate flags may also be set. */ bool fail() const { return (this->rdstate() & (badbit | failbit)) != 0; } /** * @brief Fast error checking. * @return True if the badbit is set. * * Note that other iostate flags may also be set. */ bool bad() const { return (this->rdstate() & badbit) != 0; } /** * @brief Throwing exceptions on errors. * @return The current exceptions mask. * * This changes nothing in the stream. See the one-argument version * of exceptions(iostate) for the meaning of the return value. */ iostate exceptions() const { return _M_exception; } /** * @brief Throwing exceptions on errors. * @param __except The new exceptions mask. * * By default, error flags are set silently. You can set an * exceptions mask for each stream; if a bit in the mask becomes set * in the error flags, then an exception of type * std::ios_base::failure is thrown. * * If the error flag is already set when the exceptions mask is * added, the exception is immediately thrown. Try running the * following under GCC 3.1 or later: * @code * #include * #include * #include * * int main() * { * std::set_terminate (__gnu_cxx::__verbose_terminate_handler); * * std::ifstream f ("/etc/motd"); * * std::cerr << "Setting badbit\n"; * f.setstate (std::ios_base::badbit); * * std::cerr << "Setting exception mask\n"; * f.exceptions (std::ios_base::badbit); * } * @endcode */ void exceptions(iostate __except) { _M_exception = __except; this->clear(_M_streambuf_state); } // Constructor/destructor: /** * @brief Constructor performs initialization. * * The parameter is passed by derived streams. */ explicit basic_ios(basic_streambuf<_CharT, _Traits>* __sb) : ios_base(), _M_tie(0), _M_fill(), _M_fill_init(false), _M_streambuf(0), _M_ctype(0), _M_num_put(0), _M_num_get(0) { this->init(__sb); } /** * @brief Empty. * * The destructor does nothing. More specifically, it does not * destroy the streambuf held by rdbuf(). */ virtual ~basic_ios() { } // Members: /** * @brief Fetches the current @e tied stream. * @return A pointer to the tied stream, or NULL if the stream is * not tied. * * A stream may be @e tied (or synchronized) to a second output * stream. When this stream performs any I/O, the tied stream is * first flushed. For example, @c std::cin is tied to @c std::cout. */ basic_ostream<_CharT, _Traits>* tie() const { return _M_tie; } /** * @brief Ties this stream to an output stream. * @param __tiestr The output stream. * @return The previously tied output stream, or NULL if the stream * was not tied. * * This sets up a new tie; see tie() for more. */ basic_ostream<_CharT, _Traits>* tie(basic_ostream<_CharT, _Traits>* __tiestr) { basic_ostream<_CharT, _Traits>* __old = _M_tie; _M_tie = __tiestr; return __old; } /** * @brief Accessing the underlying buffer. * @return The current stream buffer. * * This does not change the state of the stream. */ basic_streambuf<_CharT, _Traits>* rdbuf() const { return _M_streambuf; } /** * @brief Changing the underlying buffer. * @param __sb The new stream buffer. * @return The previous stream buffer. * * Associates a new buffer with the current stream, and clears the * error state. * * Due to historical accidents which the LWG refuses to correct, the * I/O library suffers from a design error: this function is hidden * in derived classes by overrides of the zero-argument @c rdbuf(), * which is non-virtual for hysterical raisins. As a result, you * must use explicit qualifications to access this function via any * derived class. For example: * * @code * std::fstream foo; // or some other derived type * std::streambuf* p = .....; * * foo.ios::rdbuf(p); // ios == basic_ios * @endcode */ basic_streambuf<_CharT, _Traits>* rdbuf(basic_streambuf<_CharT, _Traits>* __sb); /** * @brief Copies fields of __rhs into this. * @param __rhs The source values for the copies. * @return Reference to this object. * * All fields of __rhs are copied into this object except that rdbuf() * and rdstate() remain unchanged. All values in the pword and iword * arrays are copied. Before copying, each callback is invoked with * erase_event. After copying, each (new) callback is invoked with * copyfmt_event. The final step is to copy exceptions(). */ basic_ios& copyfmt(const basic_ios& __rhs); /** * @brief Retrieves the @a empty character. * @return The current fill character. * * It defaults to a space (' ') in the current locale. */ char_type fill() const { if (!_M_fill_init) { _M_fill = this->widen(' '); _M_fill_init = true; } return _M_fill; } /** * @brief Sets a new @a empty character. * @param __ch The new character. * @return The previous fill character. * * The fill character is used to fill out space when P+ characters * have been requested (e.g., via setw), Q characters are actually * used, and Qfill(); _M_fill = __ch; return __old; } // Locales: /** * @brief Moves to a new locale. * @param __loc The new locale. * @return The previous locale. * * Calls @c ios_base::imbue(loc), and if a stream buffer is associated * with this stream, calls that buffer's @c pubimbue(loc). * * Additional l10n notes are at * http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html */ locale imbue(const locale& __loc); /** * @brief Squeezes characters. * @param __c The character to narrow. * @param __dfault The character to narrow. * @return The narrowed character. * * Maps a character of @c char_type to a character of @c char, * if possible. * * Returns the result of * @code * std::use_facet >(getloc()).narrow(c,dfault) * @endcode * * Additional l10n notes are at * http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html */ char narrow(char_type __c, char __dfault) const { return __check_facet(_M_ctype).narrow(__c, __dfault); } /** * @brief Widens characters. * @param __c The character to widen. * @return The widened character. * * Maps a character of @c char to a character of @c char_type. * * Returns the result of * @code * std::use_facet >(getloc()).widen(c) * @endcode * * Additional l10n notes are at * http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html */ char_type widen(char __c) const { return __check_facet(_M_ctype).widen(__c); } protected: // 27.4.5.1 basic_ios constructors /** * @brief Empty. * * The default constructor does nothing and is not normally * accessible to users. */ basic_ios() : ios_base(), _M_tie(0), _M_fill(char_type()), _M_fill_init(false), _M_streambuf(0), _M_ctype(0), _M_num_put(0), _M_num_get(0) { } /** * @brief All setup is performed here. * * This is called from the public constructor. It is not virtual and * cannot be redefined. */ void init(basic_streambuf<_CharT, _Traits>* __sb); #if __cplusplus >= 201103L basic_ios(const basic_ios&) = delete; basic_ios& operator=(const basic_ios&) = delete; void move(basic_ios& __rhs) { ios_base::_M_move(__rhs); _M_cache_locale(_M_ios_locale); this->tie(__rhs.tie(nullptr)); _M_fill = __rhs._M_fill; _M_fill_init = __rhs._M_fill_init; _M_streambuf = nullptr; } void move(basic_ios&& __rhs) { this->move(__rhs); } void swap(basic_ios& __rhs) noexcept { ios_base::_M_swap(__rhs); _M_cache_locale(_M_ios_locale); __rhs._M_cache_locale(__rhs._M_ios_locale); std::swap(_M_tie, __rhs._M_tie); std::swap(_M_fill, __rhs._M_fill); std::swap(_M_fill_init, __rhs._M_fill_init); } void set_rdbuf(basic_streambuf<_CharT, _Traits>* __sb) { _M_streambuf = __sb; } #endif void _M_cache_locale(const locale& __loc); }; _GLIBCXX_END_NAMESPACE_VERSION } // namespace #include #endif /* _BASIC_IOS_H */