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<div class="title">string_conversions.h</div> </div>
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<a href="a01076.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// String Conversions -*- C++ -*-</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.</span>
<a name="l00004"></a>00004 <span class="comment">//</span>
<a name="l00005"></a>00005 <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span>
<a name="l00006"></a>00006 <span class="comment">// software; you can redistribute it and/or modify it under the</span>
<a name="l00007"></a>00007 <span class="comment">// terms of the GNU General Public License as published by the</span>
<a name="l00008"></a>00008 <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span>
<a name="l00009"></a>00009 <span class="comment">// any later version.</span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="comment">// This library is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00014"></a>00014 <span class="comment">// GNU General Public License for more details.</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span>
<a name="l00017"></a>00017 <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span>
<a name="l00018"></a>00018 <span class="comment">// 3.1, as published by the Free Software Foundation.</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="comment">// You should have received a copy of the GNU General Public License and</span>
<a name="l00021"></a>00021 <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span>
<a name="l00022"></a>00022 <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span>
<a name="l00023"></a>00023 <span class="comment">// <http://www.gnu.org/licenses/>.</span>
<a name="l00024"></a>00024 <span class="comment"></span>
<a name="l00025"></a>00025 <span class="comment">/** @file ext/string_conversions.h</span>
<a name="l00026"></a>00026 <span class="comment"> * This file is a GNU extension to the Standard C++ Library.</span>
<a name="l00027"></a>00027 <span class="comment"> */</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#ifndef _STRING_CONVERSIONS_H</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define _STRING_CONVERSIONS_H 1</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span>
<a name="l00032"></a>00032 <span class="preprocessor">#pragma GCC system_header</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <<a class="code" href="a00781.html">bits/c++config.h</a>></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <<a class="code" href="a00962.html">ext/numeric_traits.h</a>></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <<a class="code" href="a00883.html">bits/functexcept.h</a>></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <cstdlib></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include <cwchar></span>
<a name="l00039"></a>00039 <span class="preprocessor">#include <cstdio></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <<a class="code" href="a00791.html">cerrno</a>></span>
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">namespace </span>__gnu_cxx _GLIBCXX_VISIBILITY(default)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 _GLIBCXX_BEGIN_NAMESPACE_VERSION
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="comment">// Helper for all the sto* functions.</span>
<a name="l00047"></a>00047 <span class="keyword">template</span><<span class="keyword">typename</span> _TRet, <span class="keyword">typename</span> _Ret = _TRet, <span class="keyword">typename</span> _CharT,
<a name="l00048"></a>00048 <span class="keyword">typename</span>... _Base>
<a name="l00049"></a>00049 _Ret
<a name="l00050"></a>00050 __stoa(_TRet (*__convf) (<span class="keyword">const</span> _CharT*, _CharT**, _Base...),
<a name="l00051"></a>00051 <span class="keyword">const</span> <span class="keywordtype">char</span>* __name, <span class="keyword">const</span> _CharT* __str, std::size_t* __idx,
<a name="l00052"></a>00052 _Base... <a class="code" href="a01129.html#a1eb258935ccc1f18d8b8423cf079c353">__base</a>)
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 _Ret __ret;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 _CharT* __endptr;
<a name="l00057"></a>00057 errno = 0;
<a name="l00058"></a>00058 <span class="keyword">const</span> _TRet __tmp = __convf(__str, &__endptr, <a class="code" href="a01129.html#a1eb258935ccc1f18d8b8423cf079c353">__base</a>...);
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keywordflow">if</span> (__endptr == __str)
<a name="l00061"></a>00061 std::__throw_invalid_argument(__name);
<a name="l00062"></a>00062 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (errno == ERANGE
<a name="l00063"></a>00063 || (std::__are_same<_Ret, int>::__value
<a name="l00064"></a>00064 && (__tmp < __numeric_traits<int>::__min
<a name="l00065"></a>00065 || __tmp > __numeric_traits<int>::__max)))
<a name="l00066"></a>00066 std::__throw_out_of_range(__name);
<a name="l00067"></a>00067 <span class="keywordflow">else</span>
<a name="l00068"></a>00068 __ret = __tmp;
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keywordflow">if</span> (__idx)
<a name="l00071"></a>00071 *__idx = __endptr - __str;
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keywordflow">return</span> __ret;
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="comment">// Helper for the to_string / to_wstring functions.</span>
<a name="l00077"></a>00077 <span class="keyword">template</span><<span class="keyword">typename</span> _String, <span class="keyword">typename</span> _CharT = <span class="keyword">typename</span> _String::value_type>
<a name="l00078"></a>00078 _String
<a name="l00079"></a>00079 __to_xstring(<span class="keywordtype">int</span> (*__convf) (_CharT*, std::size_t, <span class="keyword">const</span> _CharT*,
<a name="l00080"></a>00080 __builtin_va_list), std::size_t __n,
<a name="l00081"></a>00081 <span class="keyword">const</span> _CharT* __fmt, ...)
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <span class="comment">// XXX Eventually the result will be constructed in place in</span>
<a name="l00084"></a>00084 <span class="comment">// the C++0x string, likely with the help of internal hooks.</span>
<a name="l00085"></a>00085 _CharT* __s = <span class="keyword">static_cast<</span>_CharT*<span class="keyword">></span>(__builtin_alloca(<span class="keyword">sizeof</span>(_CharT)
<a name="l00086"></a>00086 * __n));
<a name="l00087"></a>00087
<a name="l00088"></a>00088 __builtin_va_list __args;
<a name="l00089"></a>00089 __builtin_va_start(__args, __fmt);
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keyword">const</span> <span class="keywordtype">int</span> __len = __convf(__s, __n, __fmt, __args);
<a name="l00092"></a>00092
<a name="l00093"></a>00093 __builtin_va_end(__args);
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordflow">return</span> _String(__s, __s + __len);
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097
<a name="l00098"></a>00098 _GLIBCXX_END_NAMESPACE_VERSION
<a name="l00099"></a>00099 } <span class="comment">// namespace</span>
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="preprocessor">#endif // _STRING_CONVERSIONS_H</span>
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