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1 | #ifndef BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_HPP |
2 | #define BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_HPP | |
3 | ||
4 | // MS compatible compilers support #pragma once | |
5 | #if defined(_MSC_VER) | |
6 | # pragma once | |
7 | #endif | |
8 | ||
9 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 | |
10 | // extended_type_info.hpp: interface for portable version of type_info | |
11 | ||
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) | |
16 | ||
17 | // See http://www.boost.org for updates, documentation, and revision history. | |
18 | ||
19 | // for now, extended type info is part of the serialization libraries | |
20 | // this could change in the future. | |
21 | #include <cstdarg> | |
22 | #include <boost/assert.hpp> | |
23 | #include <cstddef> // NULL | |
24 | #include <boost/config.hpp> | |
25 | #include <boost/noncopyable.hpp> | |
26 | #include <boost/mpl/bool.hpp> | |
27 | ||
28 | #include <boost/serialization/config.hpp> | |
29 | #include <boost/config/abi_prefix.hpp> // must be the last header | |
30 | #ifdef BOOST_MSVC | |
31 | # pragma warning(push) | |
32 | # pragma warning(disable : 4251 4231 4660 4275) | |
33 | #endif | |
34 | ||
35 | #define BOOST_SERIALIZATION_MAX_KEY_SIZE 128 | |
36 | ||
37 | namespace boost { | |
38 | namespace serialization { | |
39 | ||
40 | namespace void_cast_detail{ | |
41 | class void_caster; | |
42 | } | |
43 | ||
44 | class BOOST_SYMBOL_VISIBLE extended_type_info : | |
45 | private boost::noncopyable | |
46 | { | |
47 | private: | |
48 | friend class boost::serialization::void_cast_detail::void_caster; | |
49 | ||
50 | // used to uniquely identify the type of class derived from this one | |
51 | // so that different derivations of this class can be simultaneously | |
52 | // included in implementation of sets and maps. | |
53 | const unsigned int m_type_info_key; | |
54 | virtual bool is_less_than(const extended_type_info & /*rhs*/) const = 0; | |
55 | virtual bool is_equal(const extended_type_info & /*rhs*/) const = 0; | |
56 | const char * m_key; | |
57 | ||
58 | protected: | |
59 | BOOST_SERIALIZATION_DECL void key_unregister() const; | |
60 | BOOST_SERIALIZATION_DECL void key_register() const; | |
61 | // this class can't be used as is. It's just the | |
62 | // common functionality for all type_info replacement | |
63 | // systems. Hence, make these protected | |
64 | BOOST_SERIALIZATION_DECL extended_type_info( | |
65 | const unsigned int type_info_key, | |
66 | const char * key | |
67 | ); | |
68 | virtual BOOST_SERIALIZATION_DECL ~extended_type_info(); | |
69 | public: | |
70 | const char * get_key() const { | |
71 | return m_key; | |
72 | } | |
73 | virtual const char * get_debug_info() const = 0; | |
74 | BOOST_SERIALIZATION_DECL bool operator<(const extended_type_info &rhs) const; | |
75 | BOOST_SERIALIZATION_DECL bool operator==(const extended_type_info &rhs) const; | |
76 | bool operator!=(const extended_type_info &rhs) const { | |
77 | return !(operator==(rhs)); | |
78 | } | |
79 | // note explicit "export" of static function to work around | |
80 | // gcc 4.5 mingw error | |
81 | static BOOST_SERIALIZATION_DECL const extended_type_info * | |
82 | find(const char *key); | |
83 | // for plugins | |
84 | virtual void * construct(unsigned int /*count*/ = 0, ...) const = 0; | |
85 | virtual void destroy(void const * const /*p*/) const = 0; | |
86 | }; | |
87 | ||
88 | template<class T> | |
89 | struct guid_defined : boost::mpl::false_ {}; | |
90 | ||
91 | namespace ext { | |
92 | template <typename T> | |
93 | struct guid_impl | |
94 | { | |
95 | static inline const char * call() | |
96 | { | |
97 | return NULL; | |
98 | } | |
99 | }; | |
100 | } | |
101 | ||
102 | template<class T> | |
103 | inline const char * guid(){ | |
104 | return ext::guid_impl<T>::call(); | |
105 | } | |
106 | ||
107 | } // namespace serialization | |
108 | } // namespace boost | |
109 | ||
110 | #ifdef BOOST_MSVC | |
111 | #pragma warning(pop) | |
112 | #endif | |
113 | ||
114 | #include <boost/config/abi_suffix.hpp> // pops abi_suffix.hpp pragmas | |
115 | ||
116 | #endif // BOOST_SERIALIZATION_EXTENDED_TYPE_INFO_HPP |