test: epoc32/include/stdapis/boost/serialization/export.hpp@2fe1408b6811

     1 #ifndef BOOST_SERIALIZATION_EXPORT_HPP

     2 #define BOOST_SERIALIZATION_EXPORT_HPP

     4 // MS compatible compilers support #pragma once

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

     6 # pragma once

     7 #endif

     9 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8

    10 // export.hpp: set traits of classes to be serialized

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

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

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

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

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

    19 // implementation of class export functionality.  This is an alternative to

    20 // "forward declaration" method to provoke instantiation of derived classes

    21 // that are to be serialized through pointers.

    23 #include <utility>

    25 #include <boost/config.hpp>

    27 // if no archive headers have been included this is a no op

    28 // this is to permit BOOST_EXPORT etc to be included in a

    29 // file declaration header

    30 #if ! defined(BOOST_ARCHIVE_BASIC_ARCHIVE_HPP)

    31 #define BOOST_CLASS_EXPORT_GUID_ARCHIVE_LIST(T, K, ASEQ)

    33 #else

    34 #include <boost/static_assert.hpp>

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

    36 #include <boost/mpl/eval_if.hpp>

    37 #include <boost/mpl/or.hpp>

    38 #include <boost/mpl/empty.hpp>

    39 #include <boost/mpl/front.hpp>

    40 #include <boost/mpl/pop_front.hpp>

    41 #include <boost/mpl/void.hpp>

    42 #include <boost/mpl/identity.hpp>

    44 #include <boost/archive/detail/known_archive_types.hpp>

    45 #include <boost/serialization/force_include.hpp>

    46 #include <boost/serialization/type_info_implementation.hpp>

    47 #include <boost/serialization/is_abstract.hpp>

    49 namespace boost {

    50 namespace archive {

    51 namespace detail {

    53 // forward template declarations

    54 class basic_pointer_iserializer;

    55 template<class Archive, class T>

    56 BOOST_DLLEXPORT const basic_pointer_iserializer &

    57 instantiate_pointer_iserializer(Archive * ar, T *) BOOST_USED;

    59 class basic_pointer_oserializer;

    60 template<class Archive, class T>

    61 BOOST_DLLEXPORT const basic_pointer_oserializer &

    62 instantiate_pointer_oserializer(Archive * ar, T *) BOOST_USED;

    64 namespace export_impl

    65 {

    66     struct nothing{

    67         static void instantiate(){}

    68     };

    70     template<class Archive, class T>

    71     struct archive {

    72         struct i {

    73             static void invoke(){

    74                 instantiate_pointer_iserializer(

    75                     static_cast<Archive *>(NULL),

    76                     static_cast<T *>(NULL)

    77                 );

    78             }

    79         };

    80         struct o {

    81             static void invoke(){

    82                 instantiate_pointer_oserializer(

    83                     static_cast<Archive *>(NULL),

    84                     static_cast<T *>(NULL)

    85                 );

    86             }

    87         };

    88         static void instantiate(){

    89             #if defined(__GNUC__) && (__GNUC__ >= 3)

    90             BOOST_STATIC_ASSERT(

    91                 Archive::is_loading::value || Archive::is_saving::value

    92             );

    93             #endif

    94             typedef BOOST_DEDUCED_TYPENAME mpl::eval_if<

    95                 BOOST_DEDUCED_TYPENAME Archive::is_saving,

    96                 mpl::identity<o>,

    97             // else

    98             BOOST_DEDUCED_TYPENAME mpl::eval_if<

    99                 BOOST_DEDUCED_TYPENAME Archive::is_loading,

   100                 mpl::identity<i>,

   101             // else

   102                 mpl::identity<nothing>

   103             > >::type typex;

   104             typex::invoke();

   105         }

   106     };

   108     template<class ASeq, class T>

   109     struct for_each_archive {

   110     private:

   111         typedef BOOST_DEDUCED_TYPENAME mpl::pop_front<ASeq>::type tail;

   112         typedef BOOST_DEDUCED_TYPENAME mpl::front<ASeq>::type head;

   113     public:

   114         static void instantiate(){

   115             archive<head, T>::instantiate();

   116             typedef BOOST_DEDUCED_TYPENAME mpl::eval_if<

   117                 mpl::empty<tail>,

   118                 mpl::identity<nothing>,

   119                 mpl::identity<for_each_archive<tail, T> >

   120             >::type typex;

   121             typex::instantiate();

   122         }

   123     };

   125 } // namespace export_impl

   127 // strictly conforming

   128 template<class T, class ASeq>

   129 struct export_generator {

   130     export_generator(){

   131         export_impl::for_each_archive<ASeq, T>::instantiate();

   132     }

   133     static const export_generator instance;

   134 };

   136 template<class T, class ASeq>

   137 const export_generator<T, ASeq>

   138     export_generator<T, ASeq>::instance;

   140 // instantiation of this template creates a static object.

   141 template<class T>

   142 struct guid_initializer {

   143     typedef BOOST_DEDUCED_TYPENAME boost::serialization::type_info_implementation<T>::type eti_type;

   144     static void export_register(const char *key){

   145         eti_type::export_register(key);

   146     }

   147     static const guid_initializer instance;

   148     guid_initializer(const char *key = 0) BOOST_USED ;

   149 };

   151 template<class T>

   152 guid_initializer<T>::guid_initializer(const char *key){

   153     if(0 != key)

   154         export_register(key);

   155 }

   157 template<class T>

   158 const guid_initializer<T> guid_initializer<T>::instance;

   160 // only gcc seems to be able to explicitly instantiate a static instance.

   161 // but all can instantiate a function that refers to a static instance

   163 // the following optimization - inhibiting explicit instantiation for abstract

   164 // classes breaks msvc compliles

   165 template<class T, class ASeq>

   166 struct export_instance {

   167     struct abstract {

   168         static const export_generator<T, ASeq> *

   169         invoke(){

   170             return 0;

   171         }

   172     };

   173     struct not_abstract {

   174         static const export_generator<T, ASeq> *

   175         invoke(){

   176             return & export_generator<T, ASeq>::instance;

   177         }

   178     };

   179 };

   181 template<class T, class ASeq>

   182 BOOST_DLLEXPORT

   183 std::pair<const export_generator<T, ASeq> *, const guid_initializer<T> *>

   184 export_instance_invoke() {

   185     typedef BOOST_DEDUCED_TYPENAME mpl::eval_if<

   186         serialization::is_abstract<T>,

   187         mpl::identity<BOOST_DEDUCED_TYPENAME export_instance<T, ASeq>::abstract>,

   188         mpl::identity<BOOST_DEDUCED_TYPENAME export_instance<T, ASeq>::not_abstract>

   189     >::type typex;

   190     return std::pair<const export_generator<T, ASeq> *, const guid_initializer<T> *>(

   191         typex::invoke(),

   192         & guid_initializer<T>::instance

   193     );

   194 }

   196 template<class T, class ASeq>

   197 struct export_archives {

   198     struct empty_archive_list {

   199         static BOOST_DLLEXPORT

   200         std::pair<const export_generator<T, ASeq> *, const guid_initializer<T> *>

   201         invoke(){

   202             return std::pair<const export_generator<T, ASeq> *,

   203                              const guid_initializer<T> *>(0, 0);

   204         }

   205     };

   206     struct non_empty_archive_list {

   207         static BOOST_DLLEXPORT

   208         std::pair<const export_generator<T, ASeq> *, const guid_initializer<T> *>

   209         invoke(){

   210             return export_instance_invoke<T, ASeq>();

   211         }

   212     };

   213 };

   215 template<class T, class ASeq>

   216 BOOST_DLLEXPORT

   217 std::pair<const export_generator<T, ASeq> *, const guid_initializer<T> *>

   218 export_archives_invoke(T &, ASeq &){

   219     typedef BOOST_DEDUCED_TYPENAME mpl::eval_if<

   220         mpl::empty<ASeq>,

   221         mpl::identity<BOOST_DEDUCED_TYPENAME export_archives<T, ASeq>::empty_archive_list>,

   222         mpl::identity<BOOST_DEDUCED_TYPENAME export_archives<T, ASeq>::non_empty_archive_list>

   223     >::type typex;

   224     return typex::invoke();

   225 }

   227 } // namespace detail

   228 } // namespace archive

   229 } // namespace boost

   231 #define BOOST_CLASS_EXPORT_GUID_ARCHIVE_LIST(T, K, ASEQ)         \

   232     namespace boost {                                            \

   233     namespace archive {                                          \

   234     namespace detail {                                           \

   235     template<>                                                   \

   236     const guid_initializer< T >                                  \

   237         guid_initializer< T >::instance(K);                      \

   238     template                                                     \

   239     BOOST_DLLEXPORT                                              \

   240     std::pair<const export_generator<T, ASEQ> *, const guid_initializer< T > *> \

   241     export_archives_invoke<T, ASEQ>(T &, ASEQ &);                \

   242     } } }                                                        \

   243     /**/

   245 #endif

   247 // check for unnecessary export.  T isn't polymorphic so there is no

   248 // need to export it.

   249 #define BOOST_CLASS_EXPORT_CHECK(T)                              \

   250     BOOST_STATIC_WARNING(                                        \

   251         boost::serialization::type_info_implementation< T >      \

   252             ::type::is_polymorphic::value                        \

   253     );                                                           \

   254     /**/

   256 // the default list of archives types for which code id generated

   257 #define BOOST_CLASS_EXPORT_GUID(T, K)                            \

   258     BOOST_CLASS_EXPORT_GUID_ARCHIVE_LIST(                        \

   259         T,                                                       \

   260         K,                                                       \

   261         boost::archive::detail::known_archive_types::type        \

   262     )                                                            \

   263     /**/

   265 // the default exportable class identifier is the class name

   266 #define BOOST_CLASS_EXPORT_ARCHIVE_LIST(T, ASEQ)                 \

   267     BOOST_CLASS_EXPORT_GUID_ARCHIVE_LIST(T, BOOST_PP_STRINGIZE(T), A)

   269 // the default exportable class identifier is the class name

   270 // the default list of archives types for which code id generated

   271 // are the originally included with this serialization system

   272 #define BOOST_CLASS_EXPORT(T)                                    \

   273     BOOST_CLASS_EXPORT_GUID_ARCHIVE_LIST(                        \

   274         T,                                                       \

   275         BOOST_PP_STRINGIZE(T),                                   \

   276         boost::archive::detail::known_archive_types::type        \

   277     )                                                            \

   278     /**/

   280 #endif // BOOST_SERIALIZATION_EXPORT_HPP

author	William Roberts <williamr@symbian.org>
	Tue, 16 Mar 2010 16:12:26 +0000
branch	Symbian2
changeset 2	2fe1408b6811
permissions	-rw-r--r--