2006-09-18 15:30:56 +02:00
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// -*- C++ -*-
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2007-01-16 01:01:24 +01:00
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// Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
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2006-09-18 15:30:56 +02:00
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the terms
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 2, or (at your option) any later
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// version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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2006-10-01 12:39:16 +02:00
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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// USA.
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2006-09-18 15:30:56 +02:00
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// As a special exception, you may use this file as part of a free
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// software library without restriction. Specifically, if other files
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// instantiate templates or use macros or inline functions from this
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// file, or you compile this file and link it with other files to
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// produce an executable, this file does not by itself cause the
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// resulting executable to be covered by the GNU General Public
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// License. This exception does not however invalidate any other
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// reasons why the executable file might be covered by the GNU General
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// Public License.
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2006-11-29 21:59:22 +01:00
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/** @file ext/type_traits.h
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* This file is a GNU extension to the Standard C++ Library.
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*/
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2006-09-18 15:30:56 +02:00
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#ifndef _EXT_TYPE_TRAITS
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#define _EXT_TYPE_TRAITS 1
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#pragma GCC system_header
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2007-04-06 16:52:27 +02:00
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#include <bits/c++config.h>
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2006-09-21 22:07:10 +02:00
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#include <bits/cpp_type_traits.h>
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_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
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// Define a nested type if some predicate holds.
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template<bool, typename>
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struct __enable_if
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{ };
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template<typename _Tp>
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struct __enable_if<true, _Tp>
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{ typedef _Tp __type; };
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2006-09-29 15:38:58 +02:00
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2006-09-18 15:30:56 +02:00
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// Conditional expression for types. If true, first, if false, second.
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template<bool _Cond, typename _Iftrue, typename _Iffalse>
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struct __conditional_type
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{ typedef _Iftrue __type; };
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template<typename _Iftrue, typename _Iffalse>
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struct __conditional_type<false, _Iftrue, _Iffalse>
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{ typedef _Iffalse __type; };
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2006-09-29 15:38:58 +02:00
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// Given an integral builtin type, return the corresponding unsigned type.
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template<typename _Tp>
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struct __add_unsigned
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{
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private:
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typedef __enable_if<std::__is_integer<_Tp>::__value, _Tp> __if_type;
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public:
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typedef typename __if_type::__type __type;
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};
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template<>
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struct __add_unsigned<char>
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{ typedef unsigned char __type; };
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2006-09-29 15:38:58 +02:00
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template<>
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struct __add_unsigned<signed char>
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{ typedef unsigned char __type; };
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template<>
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struct __add_unsigned<short>
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{ typedef unsigned short __type; };
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template<>
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struct __add_unsigned<int>
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{ typedef unsigned int __type; };
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template<>
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struct __add_unsigned<long>
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{ typedef unsigned long __type; };
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template<>
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struct __add_unsigned<long long>
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{ typedef unsigned long long __type; };
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2006-09-29 15:38:58 +02:00
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// Declare but don't define.
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template<>
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struct __add_unsigned<bool>;
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template<>
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struct __add_unsigned<wchar_t>;
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// Given an integral builtin type, return the corresponding signed type.
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template<typename _Tp>
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struct __remove_unsigned
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{
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private:
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typedef __enable_if<std::__is_integer<_Tp>::__value, _Tp> __if_type;
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public:
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typedef typename __if_type::__type __type;
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};
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template<>
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struct __remove_unsigned<char>
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{ typedef signed char __type; };
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template<>
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struct __remove_unsigned<unsigned char>
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{ typedef signed char __type; };
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template<>
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struct __remove_unsigned<unsigned short>
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{ typedef short __type; };
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template<>
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struct __remove_unsigned<unsigned int>
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{ typedef int __type; };
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template<>
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struct __remove_unsigned<unsigned long>
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{ typedef long __type; };
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template<>
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struct __remove_unsigned<unsigned long long>
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{ typedef long long __type; };
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// Declare but don't define.
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template<>
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struct __remove_unsigned<bool>;
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template<>
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struct __remove_unsigned<wchar_t>;
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PR libstdc++/28277 (partial: vstring bits)
2007-04-10 Paolo Carlini <pcarlini@suse.de>
PR libstdc++/28277 (partial: vstring bits)
* include/bits/ostream_insert.h: New.
* include/Makefile.am: Add.
* include/ext/vstring.h (operator<<(basic_ostream<>&,
const __versa_string<>&): Forward to __ostream_insert.
* include/bits/basic_string.h (operator<<(basic_ostream<>&,
const string<>&)): Likewise.
* include/std/ostream (operator<<(basic_ostream<>&, _CharT),
operator<<(basic_ostream<char,>&, char), operator<<(basic_ostream<>&,
const _CharT*), operator<<(basic_ostream<char,>&, const char*)):
Likewise.
* include/ext/vstring.tcc (operator<<(basic_ostream<>&,
const __versa_string<>&)): Remove.
(class basic_ostream): Remove friend declarations.
(basic_ostream<>::_M_write(char_type, streamsize),
_M_insert(const char_type*, streamsize)): Remove.
* include/bits/ostream.tcc (_M_insert(const char_type*, streamsize)):
Remove definition.
(operator<<(basic_ostream<>&, const char*)): Use __ostream_insert.
* config/abi/pre/gnu.ver: Adjust.
* src/ostream-inst.cc: Add __ostream_insert instantiations.
* include/bits/locale_facets.h (__pad<>::_S_pad): Remove __num
parameter.
* include/bits/locale_facets.tcc (__pad<>::_S_pad): Adjust.
(num_put<>::_M_pad(_CharT, streamsize, ios_base&, _CharT*,
const _CharT*, int&)): Likewise.
* include/Makefile.in: Rebuild.
* testsuite/ext/vstring/inserters_extractors/char/28277.cc: New.
* testsuite/ext/vstring/inserters_extractors/wchar_t/28277.cc: New.
* include/ext/vstring_util.h: Do not include the whole <locale>.
* include/ext/vstring.tcc (operator>>(basic_istream<>&,
__versa_string<>&, getline(basic_istream<>&, __versa_string<>&,
_CharT)): Tweak to refer to ios_base as a base of istream; do not
refer to non-standard types of istream.
* include/bits/istream.tcc (operator>>(basic_istream<>&, _CharT*),
ws(basic_istream<>&)): Do not refer to non-standard types of istream.
* include/std/bitset (operator>>(std::basic_istream<>&, bitset<>&)):
Avoid using basic_streambuf<>*.
* include/bits/istream.tcc (operator>>(basic_istream<>&,
basic_string<>&), getline(basic_istream<>&, basic_string<>&, _CharT)):
Move...
* include/bits/basic_string.tcc: ... here; tweak to refer to ios_base
as a base of istream; do not refer to non-standard types of istream.
* include/std/string: Tweak includes.
* include/ext/type_traits.h (__is_null_pointer): Add.
* include/ext/rc_string_base.h: Use it.
* include/ext/sso_string_base.h: Likewise.
* include/bits/basic_string.tcc (__is_null_pointer): Remove, use
the above.
* include/ext/vstring_util.h (__vstring_utility<>::_S_is_null_pointer):
Remove.
From-SVN: r123692
2007-04-10 12:38:50 +02:00
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// For use in string and vstring.
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template<typename _Type>
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inline bool
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__is_null_pointer(_Type* __ptr)
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{ return __ptr == 0; }
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template<typename _Type>
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inline bool
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__is_null_pointer(_Type)
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{ return false; }
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2006-09-18 15:30:56 +02:00
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_GLIBCXX_END_NAMESPACE
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#endif
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