1 #ifndef BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_TYPEID_HPP

     2 #define BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_TYPEID_HPP

     3 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8

     4 // MS compatible compilers support #pragma once

     5 #if defined(_MSC_VER) && (_MSC_VER >= 1020)

     6 # pragma once

     7 #endif

     8 

     9 // extended_type_info_typeid.hpp: implementation for version that depends

    10 // on runtime typing (rtti - typeid) but uses a user specified string

    11 // as the portable class identifier.

    12 

    13 // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 

    14 // Use, modification and distribution is subject to the Boost Software

    15 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at

    16 // http://www.boost.org/LICENSE_1_0.txt)

    17 

    18 //  See http://www.boost.org for updates, documentation, and revision history.

    19 

    20 #include <typeinfo>

    21 #include <boost/config.hpp>

    22 

    23 //#include <boost/static_warning.hpp>

    24 #include <boost/static_assert.hpp>

    25 #include <boost/type_traits/is_polymorphic.hpp>

    26 #include <boost/type_traits/is_const.hpp>

    27 #include <boost/preprocessor/stringize.hpp>

    28 

    29 #include <boost/serialization/extended_type_info.hpp>

    30 

    31 #include <boost/config/abi_prefix.hpp> // must be the last header

    32 #ifdef BOOST_MSVC

    33 #  pragma warning(push)

    34 #  pragma warning(disable : 4251 4231 4660 4275)

    35 #endif

    36 

    37 namespace boost {

    38 namespace serialization {

    39 

    40 namespace detail {

    41 

    42 class BOOST_SERIALIZATION_DECL(BOOST_PP_EMPTY()) extended_type_info_typeid_0 : 

    43     public extended_type_info

    44 {

    45 private:

    46     virtual bool

    47     less_than(const extended_type_info &rhs) const;

    48 protected:

    49     static const extended_type_info *

    50     get_derived_extended_type_info(const std::type_info & ti);

    51     extended_type_info_typeid_0();

    52     // account for bogus gcc warning

    53     #if defined(__GNUC__)

    54     virtual

    55     #endif

    56     ~extended_type_info_typeid_0();

    57 public:

    58     virtual const std::type_info & get_eti() const = 0;

    59 };

    60 

    61 ///////////////////////////////////////////////////////////////////////////////

    62 // layer to fold T and const T into the same table entry.

    63 template<class T>

    64 class extended_type_info_typeid_1 : 

    65     public detail::extended_type_info_typeid_0

    66 {

    67 private:

    68     virtual const std::type_info & get_eti() const {

    69         return typeid(T);

    70     }

    71 protected:

    72     // private constructor to inhibit any existence other than the 

    73     // static one

    74     extended_type_info_typeid_1() :

    75         detail::extended_type_info_typeid_0()

    76     {

    77         self_register();    // add type to type table

    78     }

    79 public:

    80     struct is_polymorphic

    81     {

    82         typedef BOOST_DEDUCED_TYPENAME boost::is_polymorphic<T>::type type;

    83         BOOST_STATIC_CONSTANT(bool, value = is_polymorphic::type::value);

    84     };

    85     static const extended_type_info *

    86     get_derived_extended_type_info(const T & t){

    87         // note: this implementation - based on usage of typeid (rtti)

    88         // only works if the class has at least one virtual function.

    89 //      BOOST_STATIC_WARNING(

    90 //          static_cast<bool>(is_polymorphic::value)

    91 //      );

    92         return detail::extended_type_info_typeid_0::get_derived_extended_type_info(typeid(t));

    93     }

    94     static extended_type_info *

    95     get_instance(){

    96         static extended_type_info_typeid_1<T> instance;

    97         return & instance;

    98     }

    99     static void

   100     export_register(const char * key){

   101         get_instance()->key_register(key);

   102     }

   103 };

   104 

   105 } // namespace detail

   106 

   107 ///////////////////////////////////////////////////////////////////////////////

   108 template<class T>

   109 class extended_type_info_typeid : 

   110     public detail::extended_type_info_typeid_1<const T>

   111 {};

   112 

   113 } // namespace serialization

   114 } // namespace boost

   115 

   116 ///////////////////////////////////////////////////////////////////////////////

   117 // If no other implementation has been designated as default, 

   118 // use this one.  To use this implementation as the default, specify it

   119 // before any of the other headers.

   120 #ifndef BOOST_SERIALIZATION_DEFAULT_TYPE_INFO

   121     #define BOOST_SERIALIZATION_DEFAULT_TYPE_INFO

   122     namespace boost {

   123     namespace serialization {

   124     template<class T>

   125     struct extended_type_info_impl {

   126         typedef BOOST_DEDUCED_TYPENAME 

   127             boost::serialization::extended_type_info_typeid<T> type;

   128     };

   129     } // namespace serialization

   130     } // namespace boost

   131 #endif

   132 

   133 #ifdef BOOST_MSVC

   134 #pragma warning(pop)

   135 #endif

   136 #include <boost/config/abi_suffix.hpp> // pops abi_suffix.hpp pragmas

   137 

   138 #endif // BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_TYPEID_HPP