boost/exception/detail/error_info_impl.hpp

   1 //Copyright (c) 2006-2010 Emil Dotchevski and Reverge Studios, Inc.
   2
   3 //Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 //file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #ifndef UUID_CE6983AC753411DDA764247956D89593
   7 #define UUID_CE6983AC753411DDA764247956D89593
   8
   9 #include <boost/config.hpp>
  10 #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
  11 #include <boost/type_traits/is_nothrow_move_constructible.hpp>
  12 #endif
  13 #include <utility>
  14 #include <string>
  15
  16 #if (__GNUC__*100+__GNUC_MINOR__>301) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
  17 #pragma GCC system_header
  18 #endif
  19 #if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
  20 #pragma warning(push,1)
  21 #endif
  22
  23 namespace
  24 boost
  25     {
  26     namespace
  27     exception_detail
  28         {
  29         class
  30         error_info_base
  31             {
  32             public:
  33
  34             virtual std::string name_value_string() const = 0;
  35             virtual error_info_base * clone() const = 0;
  36
  37             virtual
  38             ~error_info_base() BOOST_NOEXCEPT_OR_NOTHROW
  39                 {
  40                 }
  41             };
  42         }
  43
  44     template <class Tag,class T>
  45     class
  46     error_info:
  47         public exception_detail::error_info_base
  48         {
  49         exception_detail::error_info_base *
  50         clone() const
  51             {
  52             return new error_info<Tag,T>(*this);
  53             }
  54         public:
  55         typedef T value_type;
  56         error_info( value_type const & v ):
  57             v_(v)
  58             {
  59             }
  60 #if (__GNUC__*100+__GNUC_MINOR__!=406) //workaround for g++ bug
  61 #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
  62         error_info( error_info const & x ):
  63             v_(x.v_)
  64             {
  65             }
  66         error_info( T && v ) BOOST_NOEXCEPT_IF(boost::is_nothrow_move_constructible<T>::value):
  67             v_(std::move(v))
  68             {
  69             }
  70         error_info( error_info && x ) BOOST_NOEXCEPT_IF(boost::is_nothrow_move_constructible<T>::value):
  71             v_(std::move(x.v_))
  72             {
  73             }
  74 #endif
  75 #endif
  76         ~error_info() BOOST_NOEXCEPT_OR_NOTHROW
  77             {
  78             }
  79         value_type const &
  80         value() const
  81             {
  82             return v_;
  83             }
  84         value_type &
  85         value()
  86             {
  87             return v_;
  88             }
  89         private:
  90         error_info & operator=( error_info const & );
  91 #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
  92         error_info & operator=( error_info && x );
  93 #endif
  94         std::string name_value_string() const;
  95         value_type v_;
  96         };
  97     }
  98
  99 #if defined(_MSC_VER) && !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
 100 #pragma warning(pop)
 101 #endif
 102 #endif