1 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
2 // serializer_map.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 #if (defined _MSC_VER) && (_MSC_VER == 1200)
12 # pragma warning (disable : 4786) // too long name, harmless warning
13 #endif
14
15 #include <set>
16 #include <utility>
17
18 #define BOOST_ARCHIVE_SOURCE
19 // include this to prevent linker errors when the
20 // same modules are marked export and import.
21 #define BOOST_SERIALIZATION_SOURCE
22 #include <boost/serialization/config.hpp>
23 #include <boost/serialization/throw_exception.hpp>
24
25 #include <boost/archive/archive_exception.hpp>
26 #include <boost/archive/detail/basic_serializer.hpp>
27 #include <boost/archive/detail/basic_serializer_map.hpp>
28
29 namespace boost {
30 namespace serialization {
31 class extended_type_info;
32 }
33 namespace archive {
34 namespace detail {
35
36 bool
operator ()(const basic_serializer * lhs,const basic_serializer * rhs) const37 basic_serializer_map::type_info_pointer_compare::operator()(
38 const basic_serializer * lhs, const basic_serializer * rhs
39 ) const {
40 return *lhs < *rhs;
41 }
42
43 BOOST_ARCHIVE_DECL bool
insert(const basic_serializer * bs)44 basic_serializer_map::insert(const basic_serializer * bs){
45 // attempt to insert serializer into it's map
46 // the following is commented out - rather than being just
47 // deleted as a reminder not to try this.
48
49 // const std::pair<map_type::iterator, bool> result =
50 m_map.insert(bs);
51
52 // At first it seemed like a good idea. It enforced the
53 // idea that a type be exported from at most one code module
54 // (DLL or mainline). This would enforce a "one definition rule"
55 // across code modules. This seems a good idea to me.
56 // But it seems that it's just too hard for many users to implement.
57
58 // Ideally, I would like to make this exception a warning -
59 // but there isn't anyway to do that.
60
61 // if this fails, it's because it's been instantiated
62 // in multiple modules - DLLS - a recipe for problems.
63 // So trap this here
64 // if(!result.second){
65 // boost::serialization::throw_exception(
66 // archive_exception(
67 // archive_exception::multiple_code_instantiation,
68 // bs->get_debug_info()
69 // )
70 // );
71 // }
72 return true;
73 }
74
75 BOOST_ARCHIVE_DECL void
erase(const basic_serializer * bs)76 basic_serializer_map::erase(const basic_serializer * bs){
77 map_type::iterator it = m_map.begin();
78 map_type::iterator it_end = m_map.end();
79
80 while(it != it_end){
81 // note item 9 from Effective STL !!! it++
82 if(*it == bs)
83 m_map.erase(it++);
84 else
85 it++;
86 }
87 // note: we can't do this since some of the eti records
88 // we're pointing to might be expired and the comparison
89 // won't work. Leave this as a reminder not to "optimize" this.
90 //it = m_map.find(bs);
91 //assert(it != m_map.end());
92 //if(*it == bs)
93 // m_map.erase(it);
94 }
95 BOOST_ARCHIVE_DECL const basic_serializer *
find(const boost::serialization::extended_type_info & eti) const96 basic_serializer_map::find(
97 const boost::serialization::extended_type_info & eti
98 ) const {
99 const basic_serializer_arg bs(eti);
100 map_type::const_iterator it;
101 it = m_map.find(& bs);
102 if(it == m_map.end()){
103 BOOST_ASSERT(false);
104 return 0;
105 }
106 return *it;
107 }
108
109 } // namespace detail
110 } // namespace archive
111 } // namespace boost
112
113