Line data    Source code

       1             : 
       2             : /* Copyright (c) 2012, Daniel Nachbaur <daniel.nachbaur@gmail.com>
       3             :  *
       4             :  * This library is free software; you can redistribute it and/or modify it under
       5             :  * the terms of the GNU Lesser General Public License version 3.0 as published
       6             :  * by the Free Software Foundation.
       7             :  *
       8             :  * This library is distributed in the hope that it will be useful, but WITHOUT
       9             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      10             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      11             :  * details.
      12             :  *
      13             :  * You should have received a copy of the GNU Lesser General Public License
      14             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      15             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      16             :  */
      17             : 
      18             : #ifndef LUNCHBOX_ANYSERIALIZATION_H
      19             : #define LUNCHBOX_ANYSERIALIZATION_H
      20             : 
      21             : #include <lunchbox/any.h>
      22             : #include <lunchbox/types.h>
      23             : #include <servus/uint128_t.h>
      24             : 
      25             : #include <boost/mpl/for_each.hpp>
      26             : #include <boost/mpl/list.hpp>
      27             : 
      28             : #include <boost/serialization/export.hpp>
      29             : #include <boost/serialization/extended_type_info.hpp>
      30             : 
      31             : /**
      32             :  * Declares the given class to be serializable within a lunchbox::Any.
      33             :  * User is supposed to use this macro on global scope and in the compilation
      34             :  * unit where this class is to be serialized.
      35             :  */
      36             : #define SERIALIZABLEANY(CLASS) BOOST_CLASS_EXPORT(lunchbox::Any::holder<CLASS>)
      37             : 
      38             : namespace lunchbox
      39             : {
      40             : /** List of supported POD types for lunchbox::Any serialization. */
      41             : typedef boost::mpl::list<int8_t, uint8_t, int16_t, uint16_t, int32_t, uint32_t,
      42             :                          int64_t, uint64_t, float, double, bool, std::string,
      43             :                          servus::uint128_t>
      44             :     podTypes;
      45             : 
      46             : /** @cond IGNORE */
      47             : /**
      48             :  * @internal
      49             :  * Utility struct for registering types for lunchbox::Any from a type list.
      50             :  */
      51             : template <class Archive>
      52             : struct registerWrapper
      53             : {
      54          56 :     explicit registerWrapper(Archive& ar)
      55          56 :         : ar_(ar)
      56             :     {
      57          56 :     }
      58             :     Archive& ar_;
      59             : 
      60             :     template <typename T>
      61         728 :     void operator()(T)
      62             :     {
      63         728 :         ar_.template register_type<Any::holder<T> >();
      64         728 :     }
      65             : };
      66             : /** @endcond */
      67             : 
      68             : /**
      69             :  * Registers the types from the given type list for serializing it inside a
      70             :  * lunchbox::Any through the given archive.
      71             :  */
      72             : template <class TypeList, class Archive>
      73          56 : void registerTypelist(Archive& ar)
      74             : {
      75          56 :     boost::mpl::for_each<TypeList>(registerWrapper<Archive>(ar));
      76          56 : }
      77             : 
      78             : /**
      79             :  * Serializes the given object which can be a lunchbox::Any through the given
      80             :  * archive type to/from the given stream.
      81             :  */
      82             : template <class Archive, class Object, class Stream>
      83             : void serializeAny(Object& object, Stream& stream)
      84             : {
      85             :     Archive ar(stream);
      86             :     registerTypelist<podTypes>(ar);
      87             :     ar& object;
      88             : }
      89             : 
      90             : /**
      91             :  * Saves the given object which can be a lunchbox::Any through the given archive
      92             :  * type to/from the given stream.
      93             :  */
      94             : template <class Archive, class Object, class Stream>
      95          28 : void saveAny(Object& object, Stream& stream)
      96             : {
      97          56 :     Archive ar(stream);
      98          28 :     registerTypelist<podTypes>(ar);
      99          28 :     ar << object;
     100          28 : }
     101             : 
     102             : /**
     103             :  * Loads the given object which can be a lunchbox::Any through the given archive
     104             :  * type to/from the given stream.
     105             :  */
     106             : template <class Archive, class Object, class Stream>
     107          28 : void loadAny(Object& object, Stream& stream)
     108             : {
     109          56 :     Archive ar(stream);
     110          28 :     registerTypelist<podTypes>(ar);
     111          28 :     ar >> object;
     112          28 : }
     113             : }
     114             : 
     115             : #endif