+++ /dev/null
-// Output streams -*- C++ -*-
-
-// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006
-// 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 2, 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.
-
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-// USA.
-
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
-
-/** @file ostream
- * This is a Standard C++ Library header.
- */
-
-//
-// ISO C++ 14882: 27.6.2 Output streams
-//
-
-#ifndef _GLIBCXX_OSTREAM
-#define _GLIBCXX_OSTREAM 1
-
-#pragma GCC system_header
-
-#include <ios>
-
-_GLIBCXX_BEGIN_NAMESPACE(std)
-
- // [27.6.2.1] Template class basic_ostream
- /**
- * @brief Controlling output.
- *
- * 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<typename _CharT, typename _Traits>
- class basic_ostream : virtual public basic_ios<_CharT, _Traits>
- {
- public:
- // Types (inherited from basic_ios (27.4.4)):
- 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;
-
- template<typename _CharT2, typename _Traits2>
- friend basic_ostream<_CharT2, _Traits2>&
- operator<<(basic_ostream<_CharT2, _Traits2>&, _CharT2);
-
- template<typename _Traits2>
- friend basic_ostream<char, _Traits2>&
- operator<<(basic_ostream<char, _Traits2>&, char);
-
- template<typename _CharT2, typename _Traits2>
- friend basic_ostream<_CharT2, _Traits2>&
- operator<<(basic_ostream<_CharT2, _Traits2>&, const _CharT2*);
-
- template<typename _Traits2>
- friend basic_ostream<char, _Traits2>&
- operator<<(basic_ostream<char, _Traits2>&, const char*);
-
- template<typename _CharT2, typename _Traits2>
- friend basic_ostream<_CharT2, _Traits2>&
- operator<<(basic_ostream<_CharT2, _Traits2>&, const char*);
-
- template<typename _CharT2, typename _Traits2, typename _Alloc>
- friend basic_ostream<_CharT2, _Traits2>&
- operator<<(basic_ostream<_CharT2, _Traits2>&,
- const basic_string<_CharT2, _Traits2, _Alloc>&);
-
- // [27.6.2.2] constructor/destructor
- /**
- * @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() { }
-
- // [27.6.2.3] prefix/suffix
- class sentry;
- friend class sentry;
-
- // [27.6.2.5] formatted output
- // [27.6.2.5.3] basic_ostream::operator<<
- //@{
- /**
- * @brief Interface for manipulators.
- *
- * Manuipulators 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;
- }
- //@}
-
- // [27.6.2.5.2] arithmetic inserters
- /**
- * @name Arithmetic Inserters
- *
- * All the @c operator<< functions (aka <em>formatted output
- * functions</em>) 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 Basic arithmetic inserters
- * @param A variable of builtin 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<unsigned long>(__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<unsigned long>(__n));
- }
-
-#ifdef _GLIBCXX_USE_LONG_LONG
- __ostream_type&
- operator<<(long long __n)
- { return _M_insert(__n); }
-
- __ostream_type&
- operator<<(unsigned long long __n)
- { return _M_insert(__n); }
-#endif
-
- __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(static_cast<double>(__f));
- }
-
- __ostream_type&
- operator<<(long double __f)
- { return _M_insert(__f); }
-
- __ostream_type&
- operator<<(const void* __p)
- { return _M_insert(__p); }
-
- /**
- * @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 @a sb is NULL, the stream will set failbit in its error state.
- *
- * Characters are extracted from @a 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 @a sb, which
- * sets failbit in the error state
- *
- * If the function inserts no characters, failbit is set.
- */
- __ostream_type&
- operator<<(__streambuf_type* __sb);
- //@}
-
- // [27.6.2.6] unformatted output functions
- /**
- * @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 @a c.
- *
- * @note This function is not overloaded on signed char and
- * unsigned char.
- */
- __ostream_type&
- put(char_type __c);
-
- // Core write functionality, without sentry.
- void
- _M_write(const char_type* __s, streamsize __n)
- {
- const streamsize __put = this->rdbuf()->sputn(__s, __n);
- if (__put != __n)
- this->setstate(ios_base::badbit);
- }
-
- void
- _M_write(char_type __c, streamsize __n)
- {
- for (; __n > 0; --__n)
- {
- const int_type __put = this->rdbuf()->sputc(__c);
- if (traits_type::eq_int_type(__put, traits_type::eof()))
- {
- this->setstate(ios_base::badbit);
- break;
- }
- }
- }
-
- /**
- * @brief Character string insertion.
- * @param s The array to insert.
- * @param n Maximum number of characters to insert.
- * @return *this
- *
- * Characters are copied from @a s and inserted into the stream until
- * one of the following happens:
- *
- * - @a 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();
-
- // [27.6.2.4] seek members
- /**
- * @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:
- explicit
- basic_ostream() { }
-
- template<typename _ValueT>
- __ostream_type&
- _M_insert(_ValueT __v);
-
- __ostream_type&
- _M_insert(const char_type* __s, streamsize __n);
- };
-
- /**
- * @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." Additional actions may be added by the
- * implementation, and we list them in
- * http://gcc.gnu.org/onlinedocs/libstdc++/17_intro/howto.html#5
- * under [27.6] notes.
- */
- template <typename _CharT, typename _Traits>
- 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 ("okay").
- */
- explicit
- sentry(basic_ostream<_CharT, _Traits>& __os);
-
- /**
- * @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 (_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);
- }
- }
-
- /**
- * @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).
- */
- operator bool() const
- { return _M_ok; }
- };
-
- // [27.6.2.5.4] character insertion templates
- //@{
- /**
- * @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 @a c is of type @c char and the character type of the stream is not
- * @c char, the character is widened before insertion.
- */
- template<typename _CharT, typename _Traits>
- inline basic_ostream<_CharT, _Traits>&
- operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
- { return __out._M_insert(&__c, 1); }
-
- template<typename _CharT, typename _Traits>
- inline basic_ostream<_CharT, _Traits>&
- operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
- { return (__out << __out.widen(__c)); }
-
- // Specialization
- template <class _Traits>
- inline basic_ostream<char, _Traits>&
- operator<<(basic_ostream<char, _Traits>& __out, char __c)
- { return __out._M_insert(&__c, 1); }
-
- // Signed and unsigned
- template<class _Traits>
- inline basic_ostream<char, _Traits>&
- operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
- { return (__out << static_cast<char>(__c)); }
-
- template<class _Traits>
- inline basic_ostream<char, _Traits>&
- operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
- { return (__out << static_cast<char>(__c)); }
- //@}
-
- //@{
- /**
- * @brief String inserters
- * @param out An output stream.
- * @param s A character string.
- * @return out
- * @pre @a 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 @a 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<typename _CharT, typename _Traits>
- inline basic_ostream<_CharT, _Traits>&
- operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
- {
- if (!__s)
- __out.setstate(ios_base::badbit);
- else
- __out._M_insert(__s, static_cast<streamsize>(_Traits::length(__s)));
- return __out;
- }
-
- template<typename _CharT, typename _Traits>
- basic_ostream<_CharT, _Traits> &
- operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s);
-
- // Partial specializationss
- template<class _Traits>
- inline basic_ostream<char, _Traits>&
- operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
- {
- if (!__s)
- __out.setstate(ios_base::badbit);
- else
- __out._M_insert(__s, static_cast<streamsize>(_Traits::length(__s)));
- return __out;
- }
-
- // Signed and unsigned
- template<class _Traits>
- inline basic_ostream<char, _Traits>&
- operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
- { return (__out << reinterpret_cast<const char*>(__s)); }
-
- template<class _Traits>
- inline basic_ostream<char, _Traits> &
- operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
- { return (__out << reinterpret_cast<const char*>(__s)); }
- //@}
-
- // [27.6.2.7] standard basic_ostream manipulators
- /**
- * @brief Write a newline and flush the stream.
- *
- * This manipulator is often mistakenly used when a simple newline is
- * desired, leading to poor buffering performance. See
- * http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#2 for more
- * on this subject.
- */
- template<typename _CharT, typename _Traits>
- inline basic_ostream<_CharT, _Traits>&
- endl(basic_ostream<_CharT, _Traits>& __os)
- { return flush(__os.put(__os.widen('\n'))); }
-
- /**
- * @brief Write a null character into the output sequence.
- *
- * "Null character" is @c CharT() by definition. For CharT of @c char,
- * this correctly writes the ASCII @c NUL character string terminator.
- */
- template<typename _CharT, typename _Traits>
- inline basic_ostream<_CharT, _Traits>&
- ends(basic_ostream<_CharT, _Traits>& __os)
- { return __os.put(_CharT()); }
-
- /**
- * @brief Flushes the output stream.
- *
- * This manipulator simply calls the stream's @c flush() member function.
- */
- template<typename _CharT, typename _Traits>
- inline basic_ostream<_CharT, _Traits>&
- flush(basic_ostream<_CharT, _Traits>& __os)
- { return __os.flush(); }
-
-_GLIBCXX_END_NAMESPACE
-
-#ifndef _GLIBCXX_EXPORT_TEMPLATE
-# include <bits/ostream.tcc>
-#endif
-
-#endif /* _GLIBCXX_OSTREAM */
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