diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am index 69f6c33b295..de25aadd219 100644 --- a/libstdc++-v3/include/Makefile.am +++ b/libstdc++-v3/include/Makefile.am @@ -137,6 +137,7 @@ bits_freestanding = \ ${bits_srcdir}/memoryfwd.h \ ${bits_srcdir}/monostate.h \ ${bits_srcdir}/move.h \ + ${bits_srcdir}/ostream.h \ ${bits_srcdir}/out_ptr.h \ ${bits_srcdir}/predefined_ops.h \ ${bits_srcdir}/parse_numbers.h \ diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in index 4c461afb751..5a20dfb69b0 100644 --- a/libstdc++-v3/include/Makefile.in +++ b/libstdc++-v3/include/Makefile.in @@ -492,6 +492,7 @@ bits_freestanding = \ ${bits_srcdir}/memoryfwd.h \ ${bits_srcdir}/monostate.h \ ${bits_srcdir}/move.h \ + ${bits_srcdir}/ostream.h \ ${bits_srcdir}/out_ptr.h \ ${bits_srcdir}/predefined_ops.h \ ${bits_srcdir}/parse_numbers.h \ diff --git a/libstdc++-v3/include/bits/ostream.h b/libstdc++-v3/include/bits/ostream.h new file mode 100644 index 00000000000..8ee63d2d66e --- /dev/null +++ b/libstdc++-v3/include/bits/ostream.h @@ -0,0 +1,814 @@ +// Output streams -*- C++ -*- + +// Copyright (C) 1997-2024 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/ostream.h + * This is an internal header file, included by other library headers. + * Do not attempt to use it directly. @headername{ostream} + */ + +// +// ISO C++ 14882: 27.6.2 Output streams +// + +#ifndef _GLIBCXX_OSTREAM_H +#define _GLIBCXX_OSTREAM_H 1 + +#ifdef _GLIBCXX_SYSHDR +#pragma GCC system_header +#endif + +#include // iostreams + +#include +#include + +# define __glibcxx_want_print +#include // __glibcxx_syncbuf + +namespace std _GLIBCXX_VISIBILITY(default) +{ +_GLIBCXX_BEGIN_NAMESPACE_VERSION + + /** + * @brief Template class basic_ostream. + * @ingroup io + * + * @tparam _CharT Type of character stream. + * @tparam _Traits Traits for character type, defaults to + * char_traits<_CharT>. + * + * This is the base class for all output streams. It provides text + * formatting of all builtin types, and communicates with any class + * derived from basic_streambuf to do the actual output. + */ + template + class basic_ostream : virtual public basic_ios<_CharT, _Traits> + { + public: + // Types (inherited from basic_ios): + 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; + + // Non-standard Types: + typedef basic_streambuf<_CharT, _Traits> __streambuf_type; + typedef basic_ios<_CharT, _Traits> __ios_type; + typedef basic_ostream<_CharT, _Traits> __ostream_type; + typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > + __num_put_type; + typedef ctype<_CharT> __ctype_type; + + /** + * @brief Base constructor. + * + * This ctor is almost never called by the user directly, rather from + * derived classes' initialization lists, which pass a pointer to + * their own stream buffer. + */ + explicit + basic_ostream(__streambuf_type* __sb) + { this->init(__sb); } + + /** + * @brief Base destructor. + * + * This does very little apart from providing a virtual base dtor. + */ + virtual + ~basic_ostream() { } + + /// Safe prefix/suffix operations. + class sentry; + friend class sentry; + + ///@{ + /** + * @brief Interface for manipulators. + * + * Manipulators such as @c std::endl and @c std::hex use these + * functions in constructs like "std::cout << std::endl". For more + * information, see the iomanip header. + */ + __ostream_type& + operator<<(__ostream_type& (*__pf)(__ostream_type&)) + { + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // DR 60. What is a formatted input function? + // The inserters for manipulators are *not* formatted output functions. + return __pf(*this); + } + + __ostream_type& + operator<<(__ios_type& (*__pf)(__ios_type&)) + { + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // DR 60. What is a formatted input function? + // The inserters for manipulators are *not* formatted output functions. + __pf(*this); + return *this; + } + + __ostream_type& + operator<<(ios_base& (*__pf) (ios_base&)) + { + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // DR 60. What is a formatted input function? + // The inserters for manipulators are *not* formatted output functions. + __pf(*this); + return *this; + } + ///@} + + ///@{ + /** + * @name Inserters + * + * All the @c operator<< functions (aka formatted output + * functions) have some common behavior. Each starts by + * constructing a temporary object of type std::basic_ostream::sentry. + * This can have several effects, concluding with the setting of a + * status flag; see the sentry documentation for more. + * + * If the sentry status is good, the function tries to generate + * whatever data is appropriate for the type of the argument. + * + * If an exception is thrown during insertion, ios_base::badbit + * will be turned on in the stream's error state without causing an + * ios_base::failure to be thrown. The original exception will then + * be rethrown. + */ + + ///@{ + /** + * @brief Integer arithmetic inserters + * @param __n A variable of builtin integral type. + * @return @c *this if successful + * + * These functions use the stream's current locale (specifically, the + * @c num_get facet) to perform numeric formatting. + */ + __ostream_type& + operator<<(long __n) + { return _M_insert(__n); } + + __ostream_type& + operator<<(unsigned long __n) + { return _M_insert(__n); } + + __ostream_type& + operator<<(bool __n) + { return _M_insert(__n); } + + __ostream_type& + operator<<(short __n); + + __ostream_type& + operator<<(unsigned short __n) + { + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 117. basic_ostream uses nonexistent num_put member functions. + return _M_insert(static_cast(__n)); + } + + __ostream_type& + operator<<(int __n); + + __ostream_type& + operator<<(unsigned int __n) + { + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 117. basic_ostream uses nonexistent num_put member functions. + return _M_insert(static_cast(__n)); + } + +#ifdef _GLIBCXX_USE_LONG_LONG +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wlong-long" + __ostream_type& + operator<<(long long __n) + { return _M_insert(__n); } + + __ostream_type& + operator<<(unsigned long long __n) + { return _M_insert(__n); } +#pragma GCC diagnostic pop +#endif + ///@} + + ///@{ + /** + * @brief Floating point arithmetic inserters + * @param __f A variable of builtin floating point type. + * @return @c *this if successful + * + * These functions use the stream's current locale (specifically, the + * @c num_get facet) to perform numeric formatting. + */ + __ostream_type& + operator<<(double __f) + { return _M_insert(__f); } + + __ostream_type& + operator<<(float __f) + { + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 117. basic_ostream uses nonexistent num_put member functions. + return _M_insert(_S_cast_flt(__f)); + } + + __ostream_type& + operator<<(long double __f) + { return _M_insert(__f); } + ///@} + +#if defined(__STDCPP_FLOAT16_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64) + __attribute__((__always_inline__)) + __ostream_type& + operator<<(_Float16 __f) + { + return _M_insert(_S_cast_flt(__f)); + } +#endif + +#if defined(__STDCPP_FLOAT32_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64) + __attribute__((__always_inline__)) + __ostream_type& + operator<<(_Float32 __f) + { + return _M_insert(_S_cast_flt(__f)); + } +#endif + +#if defined(__STDCPP_FLOAT64_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64) + __attribute__((__always_inline__)) + __ostream_type& + operator<<(_Float64 __f) + { + return _M_insert(_S_cast_flt(__f)); + } +#endif + +#if defined(__STDCPP_FLOAT128_T__) && defined(_GLIBCXX_LDOUBLE_IS_IEEE_BINARY128) + __attribute__((__always_inline__)) + __ostream_type& + operator<<(_Float128 __f) + { + return _M_insert(_S_cast_flt(__f)); + } +#endif + +#if defined(__STDCPP_BFLOAT16_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64) + __attribute__((__always_inline__)) + __ostream_type& + operator<<(__gnu_cxx::__bfloat16_t __f) + { + return _M_insert(_S_cast_flt(__f)); + } +#endif + + /** + * @brief Pointer arithmetic inserters + * @param __p A variable of pointer type. + * @return @c *this if successful + * + * These functions use the stream's current locale (specifically, the + * @c num_get facet) to perform numeric formatting. + */ + __ostream_type& + operator<<(const void* __p) + { return _M_insert(__p); } + +#if __cplusplus >= 201703L + __ostream_type& + operator<<(nullptr_t) + { return *this << "nullptr"; } +#endif + +#if __cplusplus > 202002L + __attribute__((__always_inline__)) + __ostream_type& + operator<<(const volatile void* __p) + { return _M_insert(const_cast(__p)); } +#endif + + /** + * @brief Extracting from another streambuf. + * @param __sb A pointer to a streambuf + * + * This function behaves like one of the basic arithmetic extractors, + * in that it also constructs a sentry object and has the same error + * handling behavior. + * + * If @p __sb is NULL, the stream will set failbit in its error state. + * + * Characters are extracted from @p __sb and inserted into @c *this + * until one of the following occurs: + * + * - the input stream reaches end-of-file, + * - insertion into the output sequence fails (in this case, the + * character that would have been inserted is not extracted), or + * - an exception occurs while getting a character from @p __sb, which + * sets failbit in the error state + * + * If the function inserts no characters, failbit is set. + */ + __ostream_type& + operator<<(__streambuf_type* __sb); + ///@} + + ///@{ + /** + * @name Unformatted Output Functions + * + * All the unformatted output functions have some common behavior. + * Each starts by constructing a temporary object of type + * std::basic_ostream::sentry. This has several effects, concluding + * with the setting of a status flag; see the sentry documentation + * for more. + * + * If the sentry status is good, the function tries to generate + * whatever data is appropriate for the type of the argument. + * + * If an exception is thrown during insertion, ios_base::badbit + * will be turned on in the stream's error state. If badbit is on in + * the stream's exceptions mask, the exception will be rethrown + * without completing its actions. + */ + + /** + * @brief Simple insertion. + * @param __c The character to insert. + * @return *this + * + * Tries to insert @p __c. + * + * @note This function is not overloaded on signed char and + * unsigned char. + */ + __ostream_type& + put(char_type __c); + + /** + * @brief Character string insertion. + * @param __s The array to insert. + * @param __n Maximum number of characters to insert. + * @return *this + * + * Characters are copied from @p __s and inserted into the stream until + * one of the following happens: + * + * - @p __n characters are inserted + * - inserting into the output sequence fails (in this case, badbit + * will be set in the stream's error state) + * + * @note This function is not overloaded on signed char and + * unsigned char. + */ + __ostream_type& + write(const char_type* __s, streamsize __n); + ///@} + + /** + * @brief Synchronizing the stream buffer. + * @return *this + * + * If @c rdbuf() is a null pointer, changes nothing. + * + * Otherwise, calls @c rdbuf()->pubsync(), and if that returns -1, + * sets badbit. + */ + __ostream_type& + flush(); + + /** + * @brief Getting the current write position. + * @return A file position object. + * + * If @c fail() is not false, returns @c pos_type(-1) to indicate + * failure. Otherwise returns @c rdbuf()->pubseekoff(0,cur,out). + */ + pos_type + tellp(); + + /** + * @brief Changing the current write position. + * @param __pos A file position object. + * @return *this + * + * If @c fail() is not true, calls @c rdbuf()->pubseekpos(pos). If + * that function fails, sets failbit. + */ + __ostream_type& + seekp(pos_type); + + /** + * @brief Changing the current write position. + * @param __off A file offset object. + * @param __dir The direction in which to seek. + * @return *this + * + * If @c fail() is not true, calls @c rdbuf()->pubseekoff(off,dir). + * If that function fails, sets failbit. + */ + __ostream_type& + seekp(off_type, ios_base::seekdir); + + protected: + basic_ostream() + { this->init(0); } + +#if __cplusplus >= 201103L + // Non-standard constructor that does not call init() + basic_ostream(basic_iostream<_CharT, _Traits>&) { } + + basic_ostream(const basic_ostream&) = delete; + + basic_ostream(basic_ostream&& __rhs) + : __ios_type() + { __ios_type::move(__rhs); } + + // 27.7.3.3 Assign/swap + + basic_ostream& operator=(const basic_ostream&) = delete; + + basic_ostream& + operator=(basic_ostream&& __rhs) + { + swap(__rhs); + return *this; + } + + void + swap(basic_ostream& __rhs) + { __ios_type::swap(__rhs); } +#endif + + template + __ostream_type& + _M_insert(_ValueT __v); + + private: +#if !_GLIBCXX_INLINE_VERSION + void + _M_write(const char_type* __s, streamsize __n) + { std::__ostream_insert(*this, __s, __n); } +#endif + +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wc++17-extensions" // for if-constexpr + template + static _To + _S_cast_flt(_From __f) + { + _To __d = static_cast<_To>(__f); + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 4101: LWG 117 loses the sign for negative NaN on some arches. +#if defined __riscv + _To __sign; +#if __cpp_constexpr && __has_builtin(__builtin_bit_cast) + if constexpr (sizeof(__f) == sizeof(short)) + __sign = static_cast<_To>(__builtin_bit_cast(short, __f)); + else if constexpr (sizeof(__f) == sizeof(int)) + __sign = static_cast<_To>(__builtin_bit_cast(int, __f)); + else if constexpr (sizeof(__f) == sizeof(long long)) + __sign = static_cast<_To>(__builtin_bit_cast(long long, __f)); + else +#endif + __sign = __builtin_signbit(__f) ? _To(-1.0) : _To(+1.0); + + if _GLIBCXX17_CONSTEXPR (__is_same(_To, double)) + __d = __builtin_copysign(__d, __sign); + else if _GLIBCXX17_CONSTEXPR (__is_same(_To, long double)) + __d = __builtin_copysignl(__d, __sign); +#endif + return __d; + } +#pragma GCC diagnostic pop + }; + + /** + * @brief Performs setup work for output streams. + * + * Objects of this class are created before all of the standard + * inserters are run. It is responsible for exception-safe prefix and + * suffix operations. + */ + template + class basic_ostream<_CharT, _Traits>::sentry + { + // Data Members. + bool _M_ok; + basic_ostream<_CharT, _Traits>& _M_os; + + public: + /** + * @brief The constructor performs preparatory work. + * @param __os The output stream to guard. + * + * If the stream state is good (@a __os.good() is true), then if the + * stream is tied to another output stream, @c is.tie()->flush() + * is called to synchronize the output sequences. + * + * If the stream state is still good, then the sentry state becomes + * true (@a okay). + */ + explicit + sentry(basic_ostream<_CharT, _Traits>& __os); + +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wdeprecated-declarations" + /** + * @brief Possibly flushes the stream. + * + * If @c ios_base::unitbuf is set in @c os.flags(), and + * @c std::uncaught_exception() is true, the sentry destructor calls + * @c flush() on the output stream. + */ + ~sentry() + { + // XXX MT + if (bool(_M_os.flags() & ios_base::unitbuf) && !uncaught_exception()) + { + // Can't call flush directly or else will get into recursive lock. + if (_M_os.rdbuf() && _M_os.rdbuf()->pubsync() == -1) + _M_os.setstate(ios_base::badbit); + } + } +#pragma GCC diagnostic pop + + /** + * @brief Quick status checking. + * @return The sentry state. + * + * For ease of use, sentries may be converted to booleans. The + * return value is that of the sentry state (true == okay). + */ +#if __cplusplus >= 201103L + explicit +#endif + operator bool() const + { return _M_ok; } + }; + + ///@{ + /** + * @brief Character inserters + * @param __out An output stream. + * @param __c A character. + * @return out + * + * Behaves like one of the formatted arithmetic inserters described in + * std::basic_ostream. After constructing a sentry object with good + * status, this function inserts a single character and any required + * padding (as determined by [22.2.2.2.2]). @c __out.width(0) is then + * called. + * + * If @p __c is of type @c char and the character type of the stream is not + * @c char, the character is widened before insertion. + */ + template + inline basic_ostream<_CharT, _Traits>& + operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c) + { + if (__out.width() != 0) + return __ostream_insert(__out, &__c, 1); + __out.put(__c); + return __out; + } + + template + inline basic_ostream<_CharT, _Traits>& + operator<<(basic_ostream<_CharT, _Traits>& __out, char __c) + { return (__out << __out.widen(__c)); } + + // Specialization + template + inline basic_ostream& + operator<<(basic_ostream& __out, char __c) + { + if (__out.width() != 0) + return __ostream_insert(__out, &__c, 1); + __out.put(__c); + return __out; + } + + // Signed and unsigned + template + inline basic_ostream& + operator<<(basic_ostream& __out, signed char __c) + { return (__out << static_cast(__c)); } + + template + inline basic_ostream& + operator<<(basic_ostream& __out, unsigned char __c) + { return (__out << static_cast(__c)); } + +#if __cplusplus > 201703L + // The following deleted overloads prevent formatting character values as + // numeric values. + + template + basic_ostream& + operator<<(basic_ostream&, wchar_t) = delete; + +#ifdef _GLIBCXX_USE_CHAR8_T + template + basic_ostream& + operator<<(basic_ostream&, char8_t) = delete; +#endif + + template + basic_ostream& + operator<<(basic_ostream&, char16_t) = delete; + + template + basic_ostream& + operator<<(basic_ostream&, char32_t) = delete; + +#ifdef _GLIBCXX_USE_WCHAR_T +#ifdef _GLIBCXX_USE_CHAR8_T + template + basic_ostream& + operator<<(basic_ostream&, char8_t) = delete; +#endif // _GLIBCXX_USE_CHAR8_T + + template + basic_ostream& + operator<<(basic_ostream&, char16_t) = delete; + + template + basic_ostream& + operator<<(basic_ostream&, char32_t) = delete; +#endif // _GLIBCXX_USE_WCHAR_T +#endif // C++20 + ///@} + + ///@{ + /** + * @brief String inserters + * @param __out An output stream. + * @param __s A character string. + * @return out + * @pre @p __s must be a non-NULL pointer + * + * Behaves like one of the formatted arithmetic inserters described in + * std::basic_ostream. After constructing a sentry object with good + * status, this function inserts @c traits::length(__s) characters starting + * at @p __s, widened if necessary, followed by any required padding (as + * determined by [22.2.2.2.2]). @c __out.width(0) is then called. + */ + template + inline basic_ostream<_CharT, _Traits>& + operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s) + { + if (!__s) + __out.setstate(ios_base::badbit); + else + __ostream_insert(__out, __s, + static_cast(_Traits::length(__s))); + return __out; + } + + template + basic_ostream<_CharT, _Traits> & + operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s); + + // Partial specializations + template + inline basic_ostream& + operator<<(basic_ostream& __out, const char* __s) + { + if (!__s) + __out.setstate(ios_base::badbit); + else + __ostream_insert(__out, __s, + static_cast(_Traits::length(__s))); + return __out; + } + + // Signed and unsigned + template + inline basic_ostream& + operator<<(basic_ostream& __out, const signed char* __s) + { return (__out << reinterpret_cast(__s)); } + + template + inline basic_ostream & + operator<<(basic_ostream& __out, const unsigned char* __s) + { return (__out << reinterpret_cast(__s)); } + +#if __cplusplus > 201703L + // The following deleted overloads prevent formatting strings as + // pointer values. + + template + basic_ostream& + operator<<(basic_ostream&, const wchar_t*) = delete; + +#ifdef _GLIBCXX_USE_CHAR8_T + template + basic_ostream& + operator<<(basic_ostream&, const char8_t*) = delete; +#endif // _GLIBCXX_USE_CHAR8_T + + template + basic_ostream& + operator<<(basic_ostream&, const char16_t*) = delete; + + template + basic_ostream& + operator<<(basic_ostream&, const char32_t*) = delete; + +#ifdef _GLIBCXX_USE_WCHAR_T +#ifdef _GLIBCXX_USE_CHAR8_T + template + basic_ostream& + operator<<(basic_ostream&, const char8_t*) = delete; +#endif + + template + basic_ostream& + operator<<(basic_ostream&, const char16_t*) = delete; + + template + basic_ostream& + operator<<(basic_ostream&, const char32_t*) = delete; +#endif // _GLIBCXX_USE_WCHAR_T +#endif // C++20 + ///@} + +#if __cplusplus >= 201103L + // C++11 27.7.3.9 Rvalue stream insertion [ostream.rvalue] + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 1203. More useful rvalue stream insertion + +#if __cpp_concepts >= 201907L && __glibcxx_type_trait_variable_templates + // Use concepts if possible because they're cheaper to evaluate. + template + concept __derived_from_ios_base = is_class_v<_Tp> + && (!is_same_v<_Tp, ios_base>) + && requires (_Tp* __t, ios_base* __b) { __b = __t; }; + + template + requires __derived_from_ios_base<_Os> + && requires (_Os& __os, const _Tp& __t) { __os << __t; } + using __rvalue_stream_insertion_t = _Os&&; +#else + template + using _Require_derived_from_ios_base + = _Require, __not_>, + is_convertible::type, ios_base*>>; + + template, + typename + = decltype(std::declval<_Os&>() << std::declval())> + using __rvalue_stream_insertion_t = _Os&&; +#endif + + /** + * @brief Generic inserter for rvalue stream + * @param __os An input stream. + * @param __x A reference to the object being inserted. + * @return __os + * + * This is just a forwarding function to allow insertion to + * rvalue streams since they won't bind to the inserter functions + * that take an lvalue reference. + */ + template + inline __rvalue_stream_insertion_t<_Ostream, _Tp> + operator<<(_Ostream&& __os, const _Tp& __x) + { + __os << __x; + return std::move(__os); + } +#endif // C++11 + +_GLIBCXX_END_NAMESPACE_VERSION +} // namespace std + +#endif /* _GLIBCXX_OSTREAM_H */ diff --git a/libstdc++-v3/include/bits/unique_ptr.h b/libstdc++-v3/include/bits/unique_ptr.h index b11c59f303f..746989dfe47 100644 --- a/libstdc++-v3/include/bits/unique_ptr.h +++ b/libstdc++-v3/include/bits/unique_ptr.h @@ -40,7 +40,7 @@ #if __cplusplus >= 202002L # include # if _GLIBCXX_HOSTED -# include +# include # endif #endif diff --git a/libstdc++-v3/include/std/ostream b/libstdc++-v3/include/std/ostream index d6b366728df..644e568e882 100644 --- a/libstdc++-v3/include/std/ostream +++ b/libstdc++-v3/include/std/ostream @@ -39,8 +39,7 @@ #include // iostreams -#include -#include +#include #if __cplusplus > 202002L # include #endif @@ -52,716 +51,6 @@ namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION - /** - * @brief Template class basic_ostream. - * @ingroup io - * - * @tparam _CharT Type of character stream. - * @tparam _Traits Traits for character type, defaults to - * char_traits<_CharT>. - * - * This is the base class for all output streams. It provides text - * formatting of all builtin types, and communicates with any class - * derived from basic_streambuf to do the actual output. - */ - template - class basic_ostream : virtual public basic_ios<_CharT, _Traits> - { - public: - // Types (inherited from basic_ios): - 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; - - // Non-standard Types: - typedef basic_streambuf<_CharT, _Traits> __streambuf_type; - typedef basic_ios<_CharT, _Traits> __ios_type; - typedef basic_ostream<_CharT, _Traits> __ostream_type; - typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > - __num_put_type; - typedef ctype<_CharT> __ctype_type; - - /** - * @brief Base constructor. - * - * This ctor is almost never called by the user directly, rather from - * derived classes' initialization lists, which pass a pointer to - * their own stream buffer. - */ - explicit - basic_ostream(__streambuf_type* __sb) - { this->init(__sb); } - - /** - * @brief Base destructor. - * - * This does very little apart from providing a virtual base dtor. - */ - virtual - ~basic_ostream() { } - - /// Safe prefix/suffix operations. - class sentry; - friend class sentry; - - ///@{ - /** - * @brief Interface for manipulators. - * - * Manipulators such as @c std::endl and @c std::hex use these - * functions in constructs like "std::cout << std::endl". For more - * information, see the iomanip header. - */ - __ostream_type& - operator<<(__ostream_type& (*__pf)(__ostream_type&)) - { - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // DR 60. What is a formatted input function? - // The inserters for manipulators are *not* formatted output functions. - return __pf(*this); - } - - __ostream_type& - operator<<(__ios_type& (*__pf)(__ios_type&)) - { - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // DR 60. What is a formatted input function? - // The inserters for manipulators are *not* formatted output functions. - __pf(*this); - return *this; - } - - __ostream_type& - operator<<(ios_base& (*__pf) (ios_base&)) - { - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // DR 60. What is a formatted input function? - // The inserters for manipulators are *not* formatted output functions. - __pf(*this); - return *this; - } - ///@} - - ///@{ - /** - * @name Inserters - * - * All the @c operator<< functions (aka formatted output - * functions) have some common behavior. Each starts by - * constructing a temporary object of type std::basic_ostream::sentry. - * This can have several effects, concluding with the setting of a - * status flag; see the sentry documentation for more. - * - * If the sentry status is good, the function tries to generate - * whatever data is appropriate for the type of the argument. - * - * If an exception is thrown during insertion, ios_base::badbit - * will be turned on in the stream's error state without causing an - * ios_base::failure to be thrown. The original exception will then - * be rethrown. - */ - - ///@{ - /** - * @brief Integer arithmetic inserters - * @param __n A variable of builtin integral type. - * @return @c *this if successful - * - * These functions use the stream's current locale (specifically, the - * @c num_get facet) to perform numeric formatting. - */ - __ostream_type& - operator<<(long __n) - { return _M_insert(__n); } - - __ostream_type& - operator<<(unsigned long __n) - { return _M_insert(__n); } - - __ostream_type& - operator<<(bool __n) - { return _M_insert(__n); } - - __ostream_type& - operator<<(short __n); - - __ostream_type& - operator<<(unsigned short __n) - { - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 117. basic_ostream uses nonexistent num_put member functions. - return _M_insert(static_cast(__n)); - } - - __ostream_type& - operator<<(int __n); - - __ostream_type& - operator<<(unsigned int __n) - { - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 117. basic_ostream uses nonexistent num_put member functions. - return _M_insert(static_cast(__n)); - } - -#ifdef _GLIBCXX_USE_LONG_LONG -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wlong-long" - __ostream_type& - operator<<(long long __n) - { return _M_insert(__n); } - - __ostream_type& - operator<<(unsigned long long __n) - { return _M_insert(__n); } -#pragma GCC diagnostic pop -#endif - ///@} - - ///@{ - /** - * @brief Floating point arithmetic inserters - * @param __f A variable of builtin floating point type. - * @return @c *this if successful - * - * These functions use the stream's current locale (specifically, the - * @c num_get facet) to perform numeric formatting. - */ - __ostream_type& - operator<<(double __f) - { return _M_insert(__f); } - - __ostream_type& - operator<<(float __f) - { - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 117. basic_ostream uses nonexistent num_put member functions. - return _M_insert(_S_cast_flt(__f)); - } - - __ostream_type& - operator<<(long double __f) - { return _M_insert(__f); } - ///@} - -#if defined(__STDCPP_FLOAT16_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64) - __attribute__((__always_inline__)) - __ostream_type& - operator<<(_Float16 __f) - { - return _M_insert(_S_cast_flt(__f)); - } -#endif - -#if defined(__STDCPP_FLOAT32_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64) - __attribute__((__always_inline__)) - __ostream_type& - operator<<(_Float32 __f) - { - return _M_insert(_S_cast_flt(__f)); - } -#endif - -#if defined(__STDCPP_FLOAT64_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64) - __attribute__((__always_inline__)) - __ostream_type& - operator<<(_Float64 __f) - { - return _M_insert(_S_cast_flt(__f)); - } -#endif - -#if defined(__STDCPP_FLOAT128_T__) && defined(_GLIBCXX_LDOUBLE_IS_IEEE_BINARY128) - __attribute__((__always_inline__)) - __ostream_type& - operator<<(_Float128 __f) - { - return _M_insert(_S_cast_flt(__f)); - } -#endif - -#if defined(__STDCPP_BFLOAT16_T__) && defined(_GLIBCXX_DOUBLE_IS_IEEE_BINARY64) - __attribute__((__always_inline__)) - __ostream_type& - operator<<(__gnu_cxx::__bfloat16_t __f) - { - return _M_insert(_S_cast_flt(__f)); - } -#endif - - /** - * @brief Pointer arithmetic inserters - * @param __p A variable of pointer type. - * @return @c *this if successful - * - * These functions use the stream's current locale (specifically, the - * @c num_get facet) to perform numeric formatting. - */ - __ostream_type& - operator<<(const void* __p) - { return _M_insert(__p); } - -#if __cplusplus >= 201703L - __ostream_type& - operator<<(nullptr_t) - { return *this << "nullptr"; } -#endif - -#if __cplusplus > 202002L - __attribute__((__always_inline__)) - __ostream_type& - operator<<(const volatile void* __p) - { return _M_insert(const_cast(__p)); } -#endif - - /** - * @brief Extracting from another streambuf. - * @param __sb A pointer to a streambuf - * - * This function behaves like one of the basic arithmetic extractors, - * in that it also constructs a sentry object and has the same error - * handling behavior. - * - * If @p __sb is NULL, the stream will set failbit in its error state. - * - * Characters are extracted from @p __sb and inserted into @c *this - * until one of the following occurs: - * - * - the input stream reaches end-of-file, - * - insertion into the output sequence fails (in this case, the - * character that would have been inserted is not extracted), or - * - an exception occurs while getting a character from @p __sb, which - * sets failbit in the error state - * - * If the function inserts no characters, failbit is set. - */ - __ostream_type& - operator<<(__streambuf_type* __sb); - ///@} - - ///@{ - /** - * @name Unformatted Output Functions - * - * All the unformatted output functions have some common behavior. - * Each starts by constructing a temporary object of type - * std::basic_ostream::sentry. This has several effects, concluding - * with the setting of a status flag; see the sentry documentation - * for more. - * - * If the sentry status is good, the function tries to generate - * whatever data is appropriate for the type of the argument. - * - * If an exception is thrown during insertion, ios_base::badbit - * will be turned on in the stream's error state. If badbit is on in - * the stream's exceptions mask, the exception will be rethrown - * without completing its actions. - */ - - /** - * @brief Simple insertion. - * @param __c The character to insert. - * @return *this - * - * Tries to insert @p __c. - * - * @note This function is not overloaded on signed char and - * unsigned char. - */ - __ostream_type& - put(char_type __c); - - /** - * @brief Character string insertion. - * @param __s The array to insert. - * @param __n Maximum number of characters to insert. - * @return *this - * - * Characters are copied from @p __s and inserted into the stream until - * one of the following happens: - * - * - @p __n characters are inserted - * - inserting into the output sequence fails (in this case, badbit - * will be set in the stream's error state) - * - * @note This function is not overloaded on signed char and - * unsigned char. - */ - __ostream_type& - write(const char_type* __s, streamsize __n); - ///@} - - /** - * @brief Synchronizing the stream buffer. - * @return *this - * - * If @c rdbuf() is a null pointer, changes nothing. - * - * Otherwise, calls @c rdbuf()->pubsync(), and if that returns -1, - * sets badbit. - */ - __ostream_type& - flush(); - - /** - * @brief Getting the current write position. - * @return A file position object. - * - * If @c fail() is not false, returns @c pos_type(-1) to indicate - * failure. Otherwise returns @c rdbuf()->pubseekoff(0,cur,out). - */ - pos_type - tellp(); - - /** - * @brief Changing the current write position. - * @param __pos A file position object. - * @return *this - * - * If @c fail() is not true, calls @c rdbuf()->pubseekpos(pos). If - * that function fails, sets failbit. - */ - __ostream_type& - seekp(pos_type); - - /** - * @brief Changing the current write position. - * @param __off A file offset object. - * @param __dir The direction in which to seek. - * @return *this - * - * If @c fail() is not true, calls @c rdbuf()->pubseekoff(off,dir). - * If that function fails, sets failbit. - */ - __ostream_type& - seekp(off_type, ios_base::seekdir); - - protected: - basic_ostream() - { this->init(0); } - -#if __cplusplus >= 201103L - // Non-standard constructor that does not call init() - basic_ostream(basic_iostream<_CharT, _Traits>&) { } - - basic_ostream(const basic_ostream&) = delete; - - basic_ostream(basic_ostream&& __rhs) - : __ios_type() - { __ios_type::move(__rhs); } - - // 27.7.3.3 Assign/swap - - basic_ostream& operator=(const basic_ostream&) = delete; - - basic_ostream& - operator=(basic_ostream&& __rhs) - { - swap(__rhs); - return *this; - } - - void - swap(basic_ostream& __rhs) - { __ios_type::swap(__rhs); } -#endif - - template - __ostream_type& - _M_insert(_ValueT __v); - - private: -#if !_GLIBCXX_INLINE_VERSION - void - _M_write(const char_type* __s, streamsize __n) - { std::__ostream_insert(*this, __s, __n); } -#endif - -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wc++17-extensions" // for if-constexpr - template - static _To - _S_cast_flt(_From __f) - { - _To __d = static_cast<_To>(__f); - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 4101: LWG 117 loses the sign for negative NaN on some arches. -#if defined __riscv - _To __sign; -#if __cpp_constexpr && __has_builtin(__builtin_bit_cast) - if constexpr (sizeof(__f) == sizeof(short)) - __sign = static_cast<_To>(__builtin_bit_cast(short, __f)); - else if constexpr (sizeof(__f) == sizeof(int)) - __sign = static_cast<_To>(__builtin_bit_cast(int, __f)); - else if constexpr (sizeof(__f) == sizeof(long long)) - __sign = static_cast<_To>(__builtin_bit_cast(long long, __f)); - else -#endif - __sign = __builtin_signbit(__f) ? _To(-1.0) : _To(+1.0); - - if _GLIBCXX17_CONSTEXPR (__is_same(_To, double)) - __d = __builtin_copysign(__d, __sign); - else if _GLIBCXX17_CONSTEXPR (__is_same(_To, long double)) - __d = __builtin_copysignl(__d, __sign); -#endif - return __d; - } - }; -#pragma GCC diagnostic pop - - /** - * @brief Performs setup work for output streams. - * - * Objects of this class are created before all of the standard - * inserters are run. It is responsible for exception-safe prefix and - * suffix operations. - */ - template - class basic_ostream<_CharT, _Traits>::sentry - { - // Data Members. - bool _M_ok; - basic_ostream<_CharT, _Traits>& _M_os; - - public: - /** - * @brief The constructor performs preparatory work. - * @param __os The output stream to guard. - * - * If the stream state is good (@a __os.good() is true), then if the - * stream is tied to another output stream, @c is.tie()->flush() - * is called to synchronize the output sequences. - * - * If the stream state is still good, then the sentry state becomes - * true (@a okay). - */ - explicit - sentry(basic_ostream<_CharT, _Traits>& __os); - -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wdeprecated-declarations" - /** - * @brief Possibly flushes the stream. - * - * If @c ios_base::unitbuf is set in @c os.flags(), and - * @c std::uncaught_exception() is true, the sentry destructor calls - * @c flush() on the output stream. - */ - ~sentry() - { - // XXX MT - if (bool(_M_os.flags() & ios_base::unitbuf) && !uncaught_exception()) - { - // Can't call flush directly or else will get into recursive lock. - if (_M_os.rdbuf() && _M_os.rdbuf()->pubsync() == -1) - _M_os.setstate(ios_base::badbit); - } - } -#pragma GCC diagnostic pop - - /** - * @brief Quick status checking. - * @return The sentry state. - * - * For ease of use, sentries may be converted to booleans. The - * return value is that of the sentry state (true == okay). - */ -#if __cplusplus >= 201103L - explicit -#endif - operator bool() const - { return _M_ok; } - }; - - ///@{ - /** - * @brief Character inserters - * @param __out An output stream. - * @param __c A character. - * @return out - * - * Behaves like one of the formatted arithmetic inserters described in - * std::basic_ostream. After constructing a sentry object with good - * status, this function inserts a single character and any required - * padding (as determined by [22.2.2.2.2]). @c __out.width(0) is then - * called. - * - * If @p __c is of type @c char and the character type of the stream is not - * @c char, the character is widened before insertion. - */ - template - inline basic_ostream<_CharT, _Traits>& - operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c) - { - if (__out.width() != 0) - return __ostream_insert(__out, &__c, 1); - __out.put(__c); - return __out; - } - - template - inline basic_ostream<_CharT, _Traits>& - operator<<(basic_ostream<_CharT, _Traits>& __out, char __c) - { return (__out << __out.widen(__c)); } - - // Specialization - template - inline basic_ostream& - operator<<(basic_ostream& __out, char __c) - { - if (__out.width() != 0) - return __ostream_insert(__out, &__c, 1); - __out.put(__c); - return __out; - } - - // Signed and unsigned - template - inline basic_ostream& - operator<<(basic_ostream& __out, signed char __c) - { return (__out << static_cast(__c)); } - - template - inline basic_ostream& - operator<<(basic_ostream& __out, unsigned char __c) - { return (__out << static_cast(__c)); } - -#if __cplusplus > 201703L - // The following deleted overloads prevent formatting character values as - // numeric values. - - template - basic_ostream& - operator<<(basic_ostream&, wchar_t) = delete; - -#ifdef _GLIBCXX_USE_CHAR8_T - template - basic_ostream& - operator<<(basic_ostream&, char8_t) = delete; -#endif - - template - basic_ostream& - operator<<(basic_ostream&, char16_t) = delete; - - template - basic_ostream& - operator<<(basic_ostream&, char32_t) = delete; - -#ifdef _GLIBCXX_USE_WCHAR_T -#ifdef _GLIBCXX_USE_CHAR8_T - template - basic_ostream& - operator<<(basic_ostream&, char8_t) = delete; -#endif // _GLIBCXX_USE_CHAR8_T - - template - basic_ostream& - operator<<(basic_ostream&, char16_t) = delete; - - template - basic_ostream& - operator<<(basic_ostream&, char32_t) = delete; -#endif // _GLIBCXX_USE_WCHAR_T -#endif // C++20 - ///@} - - ///@{ - /** - * @brief String inserters - * @param __out An output stream. - * @param __s A character string. - * @return out - * @pre @p __s must be a non-NULL pointer - * - * Behaves like one of the formatted arithmetic inserters described in - * std::basic_ostream. After constructing a sentry object with good - * status, this function inserts @c traits::length(__s) characters starting - * at @p __s, widened if necessary, followed by any required padding (as - * determined by [22.2.2.2.2]). @c __out.width(0) is then called. - */ - template - inline basic_ostream<_CharT, _Traits>& - operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s) - { - if (!__s) - __out.setstate(ios_base::badbit); - else - __ostream_insert(__out, __s, - static_cast(_Traits::length(__s))); - return __out; - } - - template - basic_ostream<_CharT, _Traits> & - operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s); - - // Partial specializations - template - inline basic_ostream& - operator<<(basic_ostream& __out, const char* __s) - { - if (!__s) - __out.setstate(ios_base::badbit); - else - __ostream_insert(__out, __s, - static_cast(_Traits::length(__s))); - return __out; - } - - // Signed and unsigned - template - inline basic_ostream& - operator<<(basic_ostream& __out, const signed char* __s) - { return (__out << reinterpret_cast(__s)); } - - template - inline basic_ostream & - operator<<(basic_ostream& __out, const unsigned char* __s) - { return (__out << reinterpret_cast(__s)); } - -#if __cplusplus > 201703L - // The following deleted overloads prevent formatting strings as - // pointer values. - - template - basic_ostream& - operator<<(basic_ostream&, const wchar_t*) = delete; - -#ifdef _GLIBCXX_USE_CHAR8_T - template - basic_ostream& - operator<<(basic_ostream&, const char8_t*) = delete; -#endif // _GLIBCXX_USE_CHAR8_T - - template - basic_ostream& - operator<<(basic_ostream&, const char16_t*) = delete; - - template - basic_ostream& - operator<<(basic_ostream&, const char32_t*) = delete; - -#ifdef _GLIBCXX_USE_WCHAR_T -#ifdef _GLIBCXX_USE_CHAR8_T - template - basic_ostream& - operator<<(basic_ostream&, const char8_t*) = delete; -#endif - - template - basic_ostream& - operator<<(basic_ostream&, const char16_t*) = delete; - - template - basic_ostream& - operator<<(basic_ostream&, const char32_t*) = delete; -#endif // _GLIBCXX_USE_WCHAR_T -#endif // C++20 - ///@} - // Standard basic_ostream manipulators /** @@ -799,53 +88,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION flush(basic_ostream<_CharT, _Traits>& __os) { return __os.flush(); } -#if __cplusplus >= 201103L - // C++11 27.7.3.9 Rvalue stream insertion [ostream.rvalue] - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 1203. More useful rvalue stream insertion - -#if __cpp_concepts >= 201907L && __glibcxx_type_trait_variable_templates - // Use concepts if possible because they're cheaper to evaluate. - template - concept __derived_from_ios_base = is_class_v<_Tp> - && (!is_same_v<_Tp, ios_base>) - && requires (_Tp* __t, ios_base* __b) { __b = __t; }; - - template - requires __derived_from_ios_base<_Os> - && requires (_Os& __os, const _Tp& __t) { __os << __t; } - using __rvalue_stream_insertion_t = _Os&&; -#else - template - using _Require_derived_from_ios_base - = _Require, __not_>, - is_convertible::type, ios_base*>>; - - template, - typename - = decltype(std::declval<_Os&>() << std::declval())> - using __rvalue_stream_insertion_t = _Os&&; -#endif - - /** - * @brief Generic inserter for rvalue stream - * @param __os An input stream. - * @param __x A reference to the object being inserted. - * @return __os - * - * This is just a forwarding function to allow insertion to - * rvalue streams since they won't bind to the inserter functions - * that take an lvalue reference. - */ - template - inline __rvalue_stream_insertion_t<_Ostream, _Tp> - operator<<(_Ostream&& __os, const _Tp& __x) - { - __os << __x; - return std::move(__os); - } - #ifdef __glibcxx_syncbuf // C++ >= 20 && HOSTED && CXX11ABI template class __syncbuf_base : public basic_streambuf<_CharT, _Traits> @@ -914,7 +156,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif // __glibcxx_syncbuf #if __cpp_lib_print // C++ >= 23 - inline void vprint_nonunicode(ostream& __os, string_view __fmt, format_args __args) { @@ -1047,8 +288,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif // __cpp_lib_print -#endif // C++11 - _GLIBCXX_END_NAMESPACE_VERSION } // namespace std