[857] | 1 | #ifndef BOOST_EXTENDED_TYPE_INFO_NO_RTTI_HPP
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| 2 | #define BOOST_EXTENDED_TYPE_INFO_NO_RTTI_HPP
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| 3 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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| 4 | // MS compatible compilers support #pragma once
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| 5 | #if defined(_MSC_VER) && (_MSC_VER >= 1020)
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| 6 | # pragma once
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| 7 | #endif
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| 8 |
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| 9 | // extended_type_info_no_rtti.hpp: implementation for version that depends
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| 10 | // on runtime typing (rtti - typeid) but uses a user specified string
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| 11 | // as the portable class identifier.
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| 12 |
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| 13 | // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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| 14 | // Use, modification and distribution is subject to the Boost Software
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| 15 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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| 16 | // http://www.boost.org/LICENSE_1_0.txt)
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| 17 |
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| 18 | // See http://www.boost.org for updates, documentation, and revision history.
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| 19 | #include <cassert>
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| 20 | #include <boost/config.hpp>
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| 21 | #include <boost/static_assert.hpp>
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| 22 | #include <boost/type_traits/is_const.hpp>
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| 23 |
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| 24 | #include <boost/serialization/extended_type_info.hpp>
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| 25 | #include <boost/mpl/bool.hpp>
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| 26 |
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| 27 | #include <boost/config/abi_prefix.hpp> // must be the last header
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| 28 | #ifdef BOOST_MSVC
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| 29 | # pragma warning(push)
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| 30 | # pragma warning(disable : 4251 4231 4660 4275)
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| 31 | #endif
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| 32 |
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| 33 | namespace boost {
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| 34 | namespace serialization {
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| 35 | namespace detail {
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| 36 | ///////////////////////////////////////////////////////////////////////
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| 37 | // define a special type_info that doesn't depend on rtti which is not
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| 38 | // available in all situations.
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| 39 |
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| 40 | // common base class to share type_info_key. This is used to
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| 41 | // identify the method used to keep track of the extended type
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| 42 | class BOOST_SERIALIZATION_DECL(BOOST_PP_EMPTY()) extended_type_info_no_rtti_0 :
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| 43 | public extended_type_info
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| 44 | {
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| 45 | virtual bool
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| 46 | less_than(const boost::serialization::extended_type_info &rhs) const ;
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| 47 | protected:
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| 48 | extended_type_info_no_rtti_0();
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| 49 | // account for bogus gcc warning
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| 50 | #if defined(__GNUC__)
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| 51 | virtual
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| 52 | #endif
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| 53 | ~extended_type_info_no_rtti_0();
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| 54 | public:
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| 55 | struct is_polymorphic
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| 56 | {
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| 57 | typedef boost::mpl::bool_<true> type;
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| 58 | BOOST_STATIC_CONSTANT(bool, value = is_polymorphic::type::value);
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| 59 | };
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| 60 | };
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| 61 |
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| 62 | template<class T>
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| 63 | class extended_type_info_no_rtti_1 :
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| 64 | public extended_type_info_no_rtti_0
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| 65 | {
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| 66 | protected:
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| 67 | extended_type_info_no_rtti_1(){}
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| 68 | public:
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| 69 | // note borland complains at making this destructor protected
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| 70 | ~extended_type_info_no_rtti_1(){};
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| 71 | static const boost::serialization::extended_type_info *
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| 72 | get_derived_extended_type_info(const T & t){
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| 73 | // find the type that corresponds to the most derived type.
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| 74 | // this implementation doesn't depend on typeid() but assumes
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| 75 | // that the specified type has a function of the following signature.
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| 76 | // A common implemention of such a function is to define as a virtual
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| 77 | // function.
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| 78 | const char * derived_key = t.get_key();
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| 79 | assert(NULL != derived_key);
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| 80 | return boost::serialization::extended_type_info::find(derived_key);
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| 81 | }
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| 82 | static boost::serialization::extended_type_info *
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| 83 | get_instance(){
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| 84 | static extended_type_info_no_rtti_1<T> instance;
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| 85 | return & instance;
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| 86 | }
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| 87 | static void
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| 88 | export_register(const char * key){
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| 89 | boost::serialization::extended_type_info * eti;
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| 90 | eti = get_instance();
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| 91 | eti->key_register(key); // initialize key and add to table
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| 92 | eti->self_register(); // add type to type table
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| 93 | }
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| 94 | };
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| 95 | } // namespace detail
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| 96 |
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| 97 | template<class T>
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| 98 | class extended_type_info_no_rtti :
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| 99 | public detail::extended_type_info_no_rtti_1<const T>
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| 100 | {
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| 101 | // private constructor to inhibit any existence other than the
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| 102 | // static one
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| 103 | extended_type_info_no_rtti(){}
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| 104 | ~extended_type_info_no_rtti(){};
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| 105 | };
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| 106 |
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| 107 | } // namespace serialization
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| 108 | } // namespace boost
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| 109 |
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| 110 | ///////////////////////////////////////////////////////////////////////////////
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| 111 | // If no other implementation has been designated as default,
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| 112 | // use this one. To use this implementation as the default, specify it
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| 113 | // before any of the other headers.
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| 114 |
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| 115 | #ifndef BOOST_SERIALIZATION_DEFAULT_TYPE_INFO
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| 116 | #define BOOST_SERIALIZATION_DEFAULT_TYPE_INFO(T) \
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| 117 | extended_type_info_no_rtti<const T>
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| 118 | /**/
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| 119 | #endif
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| 120 |
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| 121 | #ifdef BOOST_MSVC
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| 122 | #pragma warning(pop)
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| 123 | #endif
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| 124 | #include <boost/config/abi_suffix.hpp> // pops abi_suffix.hpp pragmas
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| 125 |
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| 126 | #endif // BOOST_EXTENDED_TYPE_INFO_NO_RTTI_HPP
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