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1 // String Conversions -*- C++ -*-
3 // Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
25 /** @file ext/string_conversions.h
26 * This file is a GNU extension to the Standard C++ Library.
29 #ifndef _STRING_CONVERSIONS_H
30 #define _STRING_CONVERSIONS_H 1
32 #pragma GCC system_header
34 #include <bits/c++config.h>
35 #include <ext/numeric_traits.h>
36 #include <bits/functexcept.h>
42 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx
)
44 // Helper for all the sto* functions.
45 template<typename _TRet
, typename _Ret
= _TRet
, typename _CharT
,
48 __stoa(_TRet (*__convf
) (const _CharT
*, _CharT
**, _Base
...),
49 const char* __name
, const _CharT
* __str
, std::size_t* __idx
,
56 const _TRet __tmp
= __convf(__str
, &__endptr
, __base
...);
58 if (__endptr
== __str
)
59 std::__throw_invalid_argument(__name
);
60 else if (errno
== ERANGE
61 || (std::__are_same
<_Ret
, int>::__value
62 && (__tmp
< __numeric_traits
<int>::__min
63 || __tmp
> __numeric_traits
<int>::__max
)))
64 std::__throw_out_of_range(__name
);
69 *__idx
= __endptr
- __str
;
74 // Helper for the to_string / to_wstring functions.
75 template<typename _String
, typename _CharT
= typename
_String::value_type
>
77 __to_xstring(int (*__convf
) (_CharT
*, std::size_t, const _CharT
*,
78 __builtin_va_list
), std::size_t __n
,
79 const _CharT
* __fmt
, ...)
81 // XXX Eventually the result will be constructed in place in
82 // the C++0x string, likely with the help of internal hooks.
83 _CharT
* __s
= static_cast<_CharT
*>(__builtin_alloca(sizeof(_CharT
)
86 __builtin_va_list __args
;
87 __builtin_va_start(__args
, __fmt
);
89 const int __len
= __convf(__s
, __n
, __fmt
, __args
);
91 __builtin_va_end(__args
);
93 return _String(__s
, __s
+ __len
);
96 _GLIBCXX_END_NAMESPACE
98 #endif // _STRING_CONVERSIONS_H