summaryrefslogtreecommitdiffstats
blob: 53765af315e5f956a0f97a4314b9ec8e6a039782 (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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
#ifndef BOOST_ARCHIVE_DETAIL_ISERIALIZER_HPP
#define BOOST_ARCHIVE_DETAIL_ISERIALIZER_HPP

// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#pragma inline_depth(511)
#pragma inline_recursion(on)
#endif

#if defined(__MWERKS__)
#pragma inline_depth(511)
#endif

/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// iserializer.hpp: interface for serialization system.

// (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 <new>     // for placement new
#include <memory>  // for auto_ptr
#include <cstddef> // size_t, NULL

#include <boost/config.hpp>
#include <boost/detail/workaround.hpp>
#if defined(BOOST_NO_STDC_NAMESPACE)
namespace std{ 
    using ::size_t; 
} // namespace std
#endif

#include <boost/static_assert.hpp>

#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/greater_equal.hpp>
#include <boost/mpl/equal_to.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/detail/no_exceptions_support.hpp>

#ifndef BOOST_SERIALIZATION_DEFAULT_TYPE_INFO   
    #include <boost/serialization/extended_type_info_typeid.hpp>   
#endif
#include <boost/serialization/throw_exception.hpp>
#include <boost/serialization/smart_cast.hpp>
#include <boost/serialization/static_warning.hpp>

#include <boost/type_traits/is_pointer.hpp>
#include <boost/type_traits/is_enum.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/type_traits/remove_const.hpp>
#include <boost/type_traits/remove_extent.hpp>
#include <boost/type_traits/is_polymorphic.hpp>

#include <boost/serialization/assume_abstract.hpp>

#define DONT_USE_HAS_NEW_OPERATOR (                    \
    defined(__BORLANDC__)                              \
    || BOOST_WORKAROUND(__IBMCPP__, < 1210)            \
    || defined(BOOST_MSVC) && (BOOST_MSVC <= 1300)     \
    || defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x590)   \
)

#if ! DONT_USE_HAS_NEW_OPERATOR
#include <boost/type_traits/has_new_operator.hpp>
#endif

#include <boost/serialization/serialization.hpp>
#include <boost/serialization/version.hpp>
#include <boost/serialization/level.hpp>
#include <boost/serialization/tracking.hpp>
#include <boost/serialization/type_info_implementation.hpp>
#include <boost/serialization/nvp.hpp>
#include <boost/serialization/void_cast.hpp>
#include <boost/serialization/array.hpp>
#include <boost/serialization/collection_size_type.hpp>
#include <boost/serialization/singleton.hpp>
#include <boost/serialization/wrapper.hpp>

// the following is need only for dynamic cast of polymorphic pointers
#include <boost/archive/archive_exception.hpp>
#include <boost/archive/detail/basic_iarchive.hpp>
#include <boost/archive/detail/basic_iserializer.hpp>
#include <boost/archive/detail/basic_pointer_iserializer.hpp>
#include <boost/archive/detail/archive_serializer_map.hpp>
#include <boost/archive/detail/check.hpp>

namespace boost {

namespace serialization {
    class extended_type_info;
} // namespace serialization

namespace archive {

// an accessor to permit friend access to archives.  Needed because
// some compilers don't handle friend templates completely
class load_access {
public:
    template<class Archive, class T>
    static void load_primitive(Archive &ar, T &t){
        ar.load(t);
    }
};

namespace detail {

#ifdef BOOST_MSVC
#  pragma warning(push)
#  pragma warning(disable : 4511 4512)
#endif

template<class Archive, class T>
class iserializer : public basic_iserializer
{
private:
    virtual void destroy(/*const*/ void *address) const {
        boost::serialization::access::destroy(static_cast<T *>(address));
    }
protected:
    // protected constructor since it's always created by singleton
    explicit iserializer() :
        basic_iserializer(
            boost::serialization::singleton<
                BOOST_DEDUCED_TYPENAME 
                boost::serialization::type_info_implementation< T >::type
            >::get_const_instance()
        )
    {}
public:
    virtual BOOST_DLLEXPORT void load_object_data(
        basic_iarchive & ar,
        void *x, 
        const unsigned int file_version
    ) const BOOST_USED;
    virtual bool class_info() const {
        return boost::serialization::implementation_level< T >::value 
            >= boost::serialization::object_class_info;
    }
    virtual bool tracking(const unsigned int /* flags */) const {
        return boost::serialization::tracking_level< T >::value 
                == boost::serialization::track_always
            || ( boost::serialization::tracking_level< T >::value 
                == boost::serialization::track_selectively
                && serialized_as_pointer());
    }
    virtual version_type version() const {
        return version_type(::boost::serialization::version< T >::value);
    }
    virtual bool is_polymorphic() const {
        return boost::is_polymorphic< T >::value;
    }
    virtual ~iserializer(){};
};

#ifdef BOOST_MSVC
#  pragma warning(pop)
#endif

template<class Archive, class T>
BOOST_DLLEXPORT void iserializer<Archive, T>::load_object_data(
    basic_iarchive & ar,
    void *x, 
    const unsigned int file_version
) const {
    // note: we now comment this out. Before we permited archive
    // version # to be very large.  Now we don't.  To permit
    // readers of these old archives, we have to suppress this 
    // code.  Perhaps in the future we might re-enable it but
    // permit its suppression with a runtime switch.
    #if 0
    // trap case where the program cannot handle the current version
    if(file_version > static_cast<const unsigned int>(version()))
        boost::serialization::throw_exception(
            archive::archive_exception(
                boost::archive::archive_exception::unsupported_class_version,
                get_debug_info()
            )
        );
    #endif
    // make sure call is routed through the higest interface that might
    // be specialized by the user.
    boost::serialization::serialize_adl(
        boost::serialization::smart_cast_reference<Archive &>(ar),
        * static_cast<T *>(x), 
        file_version
    );
}

#ifdef BOOST_MSVC
#  pragma warning(push)
#  pragma warning(disable : 4511 4512)
#endif

template<class Archive, class T>
class pointer_iserializer :
    public basic_pointer_iserializer
{
private:
    virtual const basic_iserializer & get_basic_serializer() const {
        return boost::serialization::singleton<
            iserializer<Archive, T>
        >::get_const_instance();
    }
    BOOST_DLLEXPORT virtual void load_object_ptr(
        basic_iarchive & ar, 
        void * & x,
        const unsigned int file_version
    ) const BOOST_USED;
protected:
    // this should alway be a singleton so make the constructor protected
    pointer_iserializer();
    ~pointer_iserializer();
};

#ifdef BOOST_MSVC
#  pragma warning(pop)
#endif

// note trick to be sure that operator new is using class specific
// version if such exists. Due to Peter Dimov.
// note: the following fails if T has no default constructor.
// otherwise it would have been ideal
//struct heap_allocator : public T 
//{
//    T * invoke(){
//        return ::new(sizeof(T));
//    }
//}

template<class T>
struct heap_allocator
{
    // boost::has_new_operator< T > doesn't work on these compilers
    #if DONT_USE_HAS_NEW_OPERATOR
        // This doesn't handle operator new overload for class T
        static T * invoke(){
            return static_cast<T *>(operator new(sizeof(T)));
        }
    #else
        struct has_new_operator {
            static T* invoke() {
                return static_cast<T *>((T::operator new)(sizeof(T)));
            }
        };
        struct doesnt_have_new_operator {
            static T* invoke() {
                return static_cast<T *>(operator new(sizeof(T)));
            }
        };
        static T * invoke() {
            typedef BOOST_DEDUCED_TYPENAME
                mpl::eval_if<
                    boost::has_new_operator< T >,
                    mpl::identity<has_new_operator >,
                    mpl::identity<doesnt_have_new_operator >    
                >::type typex;
            return typex::invoke();
        }
    #endif
};

// due to Martin Ecker
template <typename T>
class auto_ptr_with_deleter
{
public:
    explicit auto_ptr_with_deleter(T* p) :
        m_p(p)
    {}
    ~auto_ptr_with_deleter(){
        if (m_p)
            boost::serialization::access::destroy(m_p);
    }
    T* get() const {
        return m_p;
    }

    T* release() {
        T* p = m_p;
        m_p = NULL;
        return p;
    }
private:
    T* m_p;
};

// note: BOOST_DLLEXPORT is so that code for polymorphic class
// serialized only through base class won't get optimized out
template<class Archive, class T>
BOOST_DLLEXPORT void pointer_iserializer<Archive, T>::load_object_ptr(
    basic_iarchive & ar, 
    void * & x,
    const unsigned int file_version
) const
{
    Archive & ar_impl = 
        boost::serialization::smart_cast_reference<Archive &>(ar);

    auto_ptr_with_deleter< T > ap(heap_allocator< T >::invoke());
    if(NULL == ap.get())
        boost::serialization::throw_exception(std::bad_alloc()) ;

    T * t = ap.get();
    x = t;

    // catch exception during load_construct_data so that we don't
    // automatically delete the t which is most likely not fully
    // constructed
    BOOST_TRY {
        // this addresses an obscure situtation that occurs when 
        // load_constructor de-serializes something through a pointer.
        ar.next_object_pointer(t);
        boost::serialization::load_construct_data_adl<Archive, T>(
            ar_impl,
            t, 
            file_version
        );
    }
    BOOST_CATCH(...){
        ap.release();
        BOOST_RETHROW;
    }
    BOOST_CATCH_END

    ar_impl >> boost::serialization::make_nvp(NULL, * t);
    ap.release();
}

template<class Archive, class T>
pointer_iserializer<Archive, T>::pointer_iserializer() :
    basic_pointer_iserializer(
        boost::serialization::singleton<
            BOOST_DEDUCED_TYPENAME 
            boost::serialization::type_info_implementation< T >::type
        >::get_const_instance()
    )
{
    boost::serialization::singleton<
        iserializer<Archive, T>
    >::get_mutable_instance().set_bpis(this);
    archive_serializer_map<Archive>::insert(this);
}

template<class Archive, class T>
pointer_iserializer<Archive, T>::~pointer_iserializer(){
    archive_serializer_map<Archive>::erase(this);
}

template<class Archive>
struct load_non_pointer_type {
    // note this bounces the call right back to the archive
    // with no runtime overhead
    struct load_primitive {
        template<class T>
        static void invoke(Archive & ar, T & t){
            load_access::load_primitive(ar, t);
        }
    };
    // note this bounces the call right back to the archive
    // with no runtime overhead
    struct load_only {
        template<class T>
        static void invoke(Archive & ar, const T & t){
            // short cut to user's serializer
            // make sure call is routed through the higest interface that might
            // be specialized by the user.
            boost::serialization::serialize_adl(
                ar, 
                const_cast<T &>(t), 
                boost::serialization::version< T >::value
            );
        }
    };

    // note this save class information including version
    // and serialization level to the archive
    struct load_standard {
        template<class T>
        static void invoke(Archive &ar, const T & t){
            void * x = & const_cast<T &>(t);
            ar.load_object(
                x, 
                boost::serialization::singleton<
                    iserializer<Archive, T>
                >::get_const_instance()
            );
        }
    };

    struct load_conditional {
        template<class T>
        static void invoke(Archive &ar, T &t){
            //if(0 == (ar.get_flags() & no_tracking))
                load_standard::invoke(ar, t);
            //else
            //    load_only::invoke(ar, t);
        }
    };

    template<class T>
    static void invoke(Archive & ar, T &t){
        typedef BOOST_DEDUCED_TYPENAME mpl::eval_if<
                // if its primitive
                mpl::equal_to<
                    boost::serialization::implementation_level< T >,
                    mpl::int_<boost::serialization::primitive_type>
                >,
                mpl::identity<load_primitive>,
            // else
            BOOST_DEDUCED_TYPENAME mpl::eval_if<
            // class info / version
            mpl::greater_equal<
                        boost::serialization::implementation_level< T >,
                        mpl::int_<boost::serialization::object_class_info>
                    >,
            // do standard load
            mpl::identity<load_standard>,
        // else
        BOOST_DEDUCED_TYPENAME mpl::eval_if<
            // no tracking
                    mpl::equal_to<
                        boost::serialization::tracking_level< T >,
                        mpl::int_<boost::serialization::track_never>
                >,
                // do a fast load
                mpl::identity<load_only>,
            // else
            // do a fast load only tracking is turned off
            mpl::identity<load_conditional>
        > > >::type typex;
        check_object_versioning< T >();
        check_object_level< T >();
        typex::invoke(ar, t);
    }
};

template<class Archive>
struct load_pointer_type {
    struct abstract
    {
        template<class T>
        static const basic_pointer_iserializer * register_type(Archive & /* ar */){
            // it has? to be polymorphic
            BOOST_STATIC_ASSERT(boost::is_polymorphic< T >::value);
            return static_cast<basic_pointer_iserializer *>(NULL);
         }
    };

    struct non_abstract
    {
        template<class T>
        static const basic_pointer_iserializer * register_type(Archive & ar){
            return ar.register_type(static_cast<T *>(NULL));
        }
    };

    template<class T>
    static const basic_pointer_iserializer * register_type(Archive &ar, const T & /*t*/){
        // there should never be any need to load an abstract polymorphic 
        // class pointer.  Inhibiting code generation for this
        // permits abstract base classes to be used - note: exception
        // virtual serialize functions used for plug-ins
        typedef BOOST_DEDUCED_TYPENAME
            mpl::eval_if<
                boost::serialization::is_abstract<const T>,
                boost::mpl::identity<abstract>,
                boost::mpl::identity<non_abstract>  
            >::type typex;
        return typex::template register_type< T >(ar);
    }

    template<class T>
    static T * pointer_tweak(
        const boost::serialization::extended_type_info & eti,
        void const * const t,
        const T &
    ) {
        // tweak the pointer back to the base class
        return static_cast<T *>(
            const_cast<void *>(
                boost::serialization::void_upcast(
                    eti,
                    boost::serialization::singleton<
                        BOOST_DEDUCED_TYPENAME 
                        boost::serialization::type_info_implementation< T >::type
                    >::get_const_instance(),
                    t
                )
            )
        );
    }

    template<class T>
    static void check_load(T & /* t */){
        check_pointer_level< T >();
        check_pointer_tracking< T >();
    }

    static const basic_pointer_iserializer *
    find(const boost::serialization::extended_type_info & type){
        return static_cast<const basic_pointer_iserializer *>(
            archive_serializer_map<Archive>::find(type)
        );
    }

    template<class Tptr>
    static void invoke(Archive & ar, Tptr & t){
        check_load(*t);
        const basic_pointer_iserializer * bpis_ptr = register_type(ar, *t);
        const basic_pointer_iserializer * newbpis_ptr = ar.load_pointer(
            // note major hack here !!!
            // I tried every way to convert Tptr &t (where Tptr might
            // include const) to void * &.  This is the only way
            // I could make it work. RR
            (void * & )t,
            bpis_ptr,
            find
        );
        // if the pointer isn't that of the base class
        if(newbpis_ptr != bpis_ptr){
            t = pointer_tweak(newbpis_ptr->get_eti(), t, *t);
        }
    }
};

template<class Archive>
struct load_enum_type {
    template<class T>
    static void invoke(Archive &ar, T &t){
        // convert integers to correct enum to load
        int i;
        ar >> boost::serialization::make_nvp(NULL, i);
        t = static_cast< T >(i);
    }
};

template<class Archive>
struct load_array_type {
    template<class T>
    static void invoke(Archive &ar, T &t){
        typedef BOOST_DEDUCED_TYPENAME remove_extent< T >::type value_type;
        
        // convert integers to correct enum to load
        // determine number of elements in the array. Consider the
        // fact that some machines will align elements on boundries
        // other than characters.
        std::size_t current_count = sizeof(t) / (
            static_cast<char *>(static_cast<void *>(&t[1])) 
            - static_cast<char *>(static_cast<void *>(&t[0]))
        );
        boost::serialization::collection_size_type count;
        ar >> BOOST_SERIALIZATION_NVP(count);
        if(static_cast<std::size_t>(count) > current_count)
            boost::serialization::throw_exception(
                archive::archive_exception(
                    boost::archive::archive_exception::array_size_too_short
                )
            );
        ar >> serialization::make_array(static_cast<value_type*>(&t[0]),count);
    }
};

} // detail

template<class Archive, class T>
inline void load(Archive & ar, T &t){
    // if this assertion trips. It means we're trying to load a
    // const object with a compiler that doesn't have correct
    // funtion template ordering.  On other compilers, this is
    // handled below.
    detail::check_const_loading< T >();
    typedef
        BOOST_DEDUCED_TYPENAME mpl::eval_if<is_pointer< T >,
            mpl::identity<detail::load_pointer_type<Archive> >
        ,//else
        BOOST_DEDUCED_TYPENAME mpl::eval_if<is_array< T >,
            mpl::identity<detail::load_array_type<Archive> >
        ,//else
        BOOST_DEDUCED_TYPENAME mpl::eval_if<is_enum< T >,
            mpl::identity<detail::load_enum_type<Archive> >
        ,//else
            mpl::identity<detail::load_non_pointer_type<Archive> >
        >
        >
        >::type typex;
    typex::invoke(ar, t);
}

#if 0

// BORLAND
#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x560))
// borland has a couple of problems
// a) if function is partially specialized - see below
// const paramters are transformed to non-const ones
// b) implementation of base_object can't be made to work
// correctly which results in all base_object s being const.
// So, strip off the const for borland.  This breaks the trap
// for loading const objects - but I see no alternative
template<class Archive, class T>
inline void load(Archive &ar, const T & t){
    load(ar, const_cast<T &>(t));
}
#endif

// let wrappers through.
#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
template<class Archive, class T>
inline void load_wrapper(Archive &ar, const T&t, mpl::true_){
    boost::archive::load(ar, const_cast<T&>(t));
}

#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x560))
template<class Archive, class T>
inline void load(Archive &ar, const T&t){
  load_wrapper(ar,t,serialization::is_wrapper< T >());
}
#endif 
#endif

#endif

} // namespace archive
} // namespace boost

#endif // BOOST_ARCHIVE_DETAIL_ISERIALIZER_HPP