ceph/src/boost/libs/serialization/src/basic_archive.cpp

   1 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
   2 // basic_archive.cpp:
   3
   4 // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
   5 // Use, modification and distribution is subject to the Boost Software
   6 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 //  See http://www.boost.org for updates, documentation, and revision history.
  10
  11 //////////////////////////////////////////////////////////////////////
  12 //
  13 //  objects are stored as
  14 //
  15 //      class_id*   // -1 for a null pointer
  16 //      if a new class id
  17 //      [
  18 //          exported key - class name*
  19 //          tracking level - always/never
  20 //          class version
  21 //      ]
  22 //
  23 //      if tracking
  24 //      [
  25 //          object_id
  26 //      ]
  27 //
  28 //      [   // if a new object id
  29 //          data...
  30 //      ]
  31 //
  32 //  * required only for pointers - optional for objects
  33
  34 #define BOOST_ARCHIVE_SOURCE
  35 #include <boost/serialization/config.hpp>
  36 #include <boost/archive/basic_archive.hpp>
  37
  38 namespace boost {
  39 namespace archive {
  40
  41 ///////////////////////////////////////////////////////////////////////
  42 // constants used in archive signature
  43 //This should never ever change. note that is not an std::string
  44 // string.
  45 BOOST_SYMBOL_VISIBLE const char *
  46 BOOST_ARCHIVE_SIGNATURE(){
  47     return "serialization::archive";
  48 }
  49
  50 // this should change if the capabilities are added to the library
  51 // such that archives can be created which can't be read by previous
  52 // versions of this library
  53 // 1 - initial version
  54 // 2 - made address tracking optional
  55 // 3 - numerous changes - can't guarentee compatibility with previous versions
  56 // 4 - Boost 1.34
  57 //     added item_version to properly support versioning for collections
  58 // 5 - Boost 1.36
  59 //     changed serialization of collections: adding version even for primitive
  60 //     types caused backwards compatibility breaking change in 1.35
  61 // 6 - Boost 1.41 17 Nov 2009
  62 //     serializing collection sizes as std::size_t
  63 // 7   Boost 1.42 2 Feb 2010
  64 //     error - changed binary version to 16 bits w/o changing library version #
  65 //     That is - binary archives are recorded with #6 even though they are
  66 //     different from the previous versions.  This means that binary archives
  67 //     created with versions 1.42 and 1.43 will have to be fixed with a special
  68 //     program which fixes the library version # in the header
  69 //     Boost 1.43 6 May 2010
  70 //     no change
  71 // 8 - Boost 1.44
  72 //     separated version_type into library_version_type and class_version_type
  73 //     changed version_type to be stored as 8 bits.
  74 // 10- fixed base64 output/input.
  75 // 11- not changes
  76 // 12- improved serialization of collections
  77 // 13- simplified visibility, removed Borland, removed pfto
  78 // 14- improved visibility, refactor map/set
  79 // 15- corrections to optional and collection loading
  80 // 16- eliminated dependency on <codecvt> which is buggy in some libraries
  81 //     and now officially deprecated in the standard
  82 // 17- Boost 1.68 August 2018
  83
  84 BOOST_SYMBOL_VISIBLE library_version_type
  85 BOOST_ARCHIVE_VERSION(){
  86     return library_version_type(17);
  87 }
  88
  89 } // namespace archive
  90 } // namespace boost