summaryrefslogtreecommitdiffstats
blob: 025b3f6964d9cc2aed5d2dd5ed867033e05a3bf2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
#ifndef BOOST_EXTENDED_TYPE_INFO_NO_RTTI_HPP
#define BOOST_EXTENDED_TYPE_INFO_NO_RTTI_HPP

/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif

// extended_type_info_no_rtti.hpp: implementation for version that depends
// on runtime typing (rtti - typeid) but uses a user specified string
// as the portable class identifier.

// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)

//  See http://www.boost.org for updates, documentation, and revision history.
#include <boost/assert.hpp>

#include <boost/config.hpp>
#include <boost/static_assert.hpp>

#include <boost/mpl/if.hpp>
#include <boost/type_traits/is_polymorphic.hpp>
#include <boost/type_traits/remove_const.hpp>

#include <boost/serialization/static_warning.hpp>
#include <boost/serialization/singleton.hpp>
#include <boost/serialization/extended_type_info.hpp>
#include <boost/serialization/factory.hpp>
#include <boost/serialization/throw_exception.hpp>

#include <boost/serialization/config.hpp>
// hijack serialization access
#include <boost/serialization/access.hpp>

#include <boost/config/abi_prefix.hpp> // must be the last header
#ifdef BOOST_MSVC
#  pragma warning(push)
#  pragma warning(disable : 4251 4231 4660 4275 4511 4512)
#endif

namespace boost {
namespace serialization {
///////////////////////////////////////////////////////////////////////
// define a special type_info that doesn't depend on rtti which is not
// available in all situations.

namespace no_rtti_system {

// common base class to share type_info_key.  This is used to 
// identify the method used to keep track of the extended type
class BOOST_SERIALIZATION_DECL(BOOST_PP_EMPTY()) extended_type_info_no_rtti_0 : 
    public extended_type_info
{
protected:
    extended_type_info_no_rtti_0(const char * key);
    ~extended_type_info_no_rtti_0();
public:
    virtual bool
    is_less_than(const boost::serialization::extended_type_info &rhs) const ;
    virtual bool
    is_equal(const boost::serialization::extended_type_info &rhs) const ;
};

} // no_rtti_system

template<class T>
class extended_type_info_no_rtti : 
    public no_rtti_system::extended_type_info_no_rtti_0,
    public singleton<extended_type_info_no_rtti< T > >
{
    template<bool tf>
    struct action {
        struct defined {
            static const char * invoke(){
                return guid< T >();
            }
        };
        struct undefined {
            // if your program traps here - you failed to 
            // export a guid for this type.  the no_rtti
            // system requires export for types serialized
            // as pointers.
            BOOST_STATIC_ASSERT(0 == sizeof(T));
            static const char * invoke();
        };
        static const char * invoke(){
            typedef 
                BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
                    tf,
                    defined,
                    undefined
                >::type type;
            return type::invoke();
        }
    };
public:
    extended_type_info_no_rtti() :
        no_rtti_system::extended_type_info_no_rtti_0(get_key())
    {
        key_register();
    }
    ~extended_type_info_no_rtti(){
        key_unregister();
    }
    const extended_type_info *
    get_derived_extended_type_info(const T & t) const {
        // find the type that corresponds to the most derived type.
        // this implementation doesn't depend on typeid() but assumes
        // that the specified type has a function of the following signature.
        // A common implemention of such a function is to define as a virtual
        // function. So if the is not a polymporphic type it's likely an error
        BOOST_STATIC_WARNING(boost::is_polymorphic< T >::value);
        const char * derived_key = t.get_key();
        BOOST_ASSERT(NULL != derived_key);
        return boost::serialization::extended_type_info::find(derived_key);
    }
    const char * get_key() const{
        return action<guid_defined< T >::value >::invoke();
    }
    virtual const char * get_debug_info() const{
        return action<guid_defined< T >::value >::invoke();
    }
    virtual void * construct(unsigned int count, ...) const{
        // count up the arguments
        std::va_list ap;
        va_start(ap, count);
        switch(count){
        case 0:
            return factory<BOOST_DEDUCED_TYPENAME boost::remove_const< T >::type, 0>(ap);
        case 1:
            return factory<BOOST_DEDUCED_TYPENAME boost::remove_const< T >::type, 1>(ap);
        case 2:
            return factory<BOOST_DEDUCED_TYPENAME boost::remove_const< T >::type, 2>(ap);
        case 3:
            return factory<BOOST_DEDUCED_TYPENAME boost::remove_const< T >::type, 3>(ap);
        case 4:
            return factory<BOOST_DEDUCED_TYPENAME boost::remove_const< T >::type, 4>(ap);
        default:
            BOOST_ASSERT(false); // too many arguments
            // throw exception here?
            return NULL;
        }
    }
    virtual void destroy(void const * const p) const{
        boost::serialization::access::destroy(
            static_cast<T const *>(p)
        );
        //delete static_cast<T const * const>(p) ;
    }
};

} // namespace serialization
} // namespace boost

///////////////////////////////////////////////////////////////////////////////
// If no other implementation has been designated as default, 
// use this one.  To use this implementation as the default, specify it
// before any of the other headers.

#ifndef BOOST_SERIALIZATION_DEFAULT_TYPE_INFO
    #define BOOST_SERIALIZATION_DEFAULT_TYPE_INFO
    namespace boost {
    namespace serialization {
    template<class T>
    struct extended_type_info_impl {
        typedef BOOST_DEDUCED_TYPENAME 
            boost::serialization::extended_type_info_no_rtti< T > type;
    };
    } // namespace serialization
    } // namespace boost
#endif

#ifdef BOOST_MSVC
#  pragma warning(pop)
#endif
#include <boost/config/abi_suffix.hpp> // pops abi_suffix.hpp pragmas

#endif // BOOST_EXTENDED_TYPE_INFO_NO_RTTI_HPP