ceph/src/boost/libs/lexical_cast/include/boost/lexical_cast.hpp

   1 // Copyright Kevlin Henney, 2000-2005.
   2 // Copyright Alexander Nasonov, 2006-2010.
   3 // Copyright Antony Polukhin, 2011-2014.
   4 //
   5 // Distributed under the Boost Software License, Version 1.0. (See
   6 // accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8 //
   9 // what:  lexical_cast custom keyword cast
  10 // who:   contributed by Kevlin Henney,
  11 //        enhanced with contributions from Terje Slettebo,
  12 //        with additional fixes and suggestions from Gennaro Prota,
  13 //        Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
  14 //        Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
  15 //        Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
  16 // when:  November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
  17
  18 #ifndef BOOST_LEXICAL_CAST_INCLUDED
  19 #define BOOST_LEXICAL_CAST_INCLUDED
  20
  21 #include <boost/config.hpp>
  22 #ifdef BOOST_HAS_PRAGMA_ONCE
  23 #   pragma once
  24 #endif
  25
  26 #if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
  27 #define BOOST_LCAST_NO_WCHAR_T
  28 #endif
  29
  30 #include <boost/range/iterator_range_core.hpp>
  31 #include <boost/lexical_cast/bad_lexical_cast.hpp>
  32 #include <boost/lexical_cast/try_lexical_convert.hpp>
  33
  34 namespace boost
  35 {
  36     template <typename Target, typename Source>
  37     inline Target lexical_cast(const Source &arg)
  38     {
  39         Target result = Target();
  40
  41         if (!boost::conversion::detail::try_lexical_convert(arg, result)) {
  42             boost::conversion::detail::throw_bad_cast<Source, Target>();
  43         }
  44
  45         return result;
  46     }
  47
  48     template <typename Target>
  49     inline Target lexical_cast(const char* chars, std::size_t count)
  50     {
  51         return ::boost::lexical_cast<Target>(
  52             ::boost::iterator_range<const char*>(chars, chars + count)
  53         );
  54     }
  55
  56     template <typename Target>
  57     inline Target lexical_cast(const unsigned char* chars, std::size_t count)
  58     {
  59         return ::boost::lexical_cast<Target>(
  60             ::boost::iterator_range<const unsigned char*>(chars, chars + count)
  61         );
  62     }
  63
  64     template <typename Target>
  65     inline Target lexical_cast(const signed char* chars, std::size_t count)
  66     {
  67         return ::boost::lexical_cast<Target>(
  68             ::boost::iterator_range<const signed char*>(chars, chars + count)
  69         );
  70     }
  71
  72 #ifndef BOOST_LCAST_NO_WCHAR_T
  73     template <typename Target>
  74     inline Target lexical_cast(const wchar_t* chars, std::size_t count)
  75     {
  76         return ::boost::lexical_cast<Target>(
  77             ::boost::iterator_range<const wchar_t*>(chars, chars + count)
  78         );
  79     }
  80 #endif
  81 #ifndef BOOST_NO_CXX11_CHAR16_T
  82     template <typename Target>
  83     inline Target lexical_cast(const char16_t* chars, std::size_t count)
  84     {
  85         return ::boost::lexical_cast<Target>(
  86             ::boost::iterator_range<const char16_t*>(chars, chars + count)
  87         );
  88     }
  89 #endif
  90 #ifndef BOOST_NO_CXX11_CHAR32_T
  91     template <typename Target>
  92     inline Target lexical_cast(const char32_t* chars, std::size_t count)
  93     {
  94         return ::boost::lexical_cast<Target>(
  95             ::boost::iterator_range<const char32_t*>(chars, chars + count)
  96         );
  97     }
  98 #endif
  99
 100 } // namespace boost
 101
 102 #undef BOOST_LCAST_NO_WCHAR_T
 103
 104 #endif // BOOST_LEXICAL_CAST_INCLUDED
 105