1 #ifndef BOOST_ARCHIVE_BASIC_BINARY_OPRIMITIVE_HPP
2 #define BOOST_ARCHIVE_BASIC_BINARY_OPRIMITIVE_HPP
4 // MS compatible compilers support #pragma once
9 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
10 // basic_binary_oprimitive.hpp
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)
17 // See http://www.boost.org for updates, documentation, and revision history.
19 // archives stored as native binary - this should be the fastest way
20 // to archive the state of a group of obects. It makes no attempt to
21 // convert to any canonical form.
23 // IN GENERAL, ARCHIVES CREATED WITH THIS CLASS WILL NOT BE READABLE
24 // ON PLATFORM APART FROM THE ONE THEY ARE CREATE ON
27 #include <boost/assert.hpp>
29 #include <streambuf> // basic_streambuf
31 #include <cstddef> // size_t
33 #include <boost/config.hpp>
34 #if defined(BOOST_NO_STDC_NAMESPACE)
40 #include <boost/cstdint.hpp>
41 #include <boost/integer.hpp>
42 #include <boost/integer_traits.hpp>
43 #include <boost/scoped_ptr.hpp>
44 #include <boost/serialization/throw_exception.hpp>
46 #include <boost/archive/basic_streambuf_locale_saver.hpp>
47 #include <boost/archive/archive_exception.hpp>
48 #include <boost/serialization/is_bitwise_serializable.hpp>
49 #include <boost/mpl/placeholders.hpp>
50 #include <boost/serialization/array.hpp>
51 #include <boost/archive/detail/auto_link_archive.hpp>
52 #include <boost/archive/detail/abi_prefix.hpp> // must be the last header
57 /////////////////////////////////////////////////////////////////////////
58 // class basic_binary_oprimitive - binary output of prmitives
60 template<class Archive, class Elem, class Tr>
61 class basic_binary_oprimitive {
62 #ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
63 friend class save_access;
68 std::basic_streambuf<Elem, Tr> & m_sb;
69 // return a pointer to the most derived class
71 return static_cast<Archive *>(this);
73 #ifndef BOOST_NO_STD_LOCALE
74 boost::scoped_ptr<std::locale> archive_locale;
75 basic_streambuf_locale_saver<Elem, Tr> locale_saver;
77 // default saving of primitives.
79 void save(const T & t)
81 save_binary(& t, sizeof(T));
84 /////////////////////////////////////////////////////////
85 // fundamental types that need special treatment
87 // trap usage of invalid uninitialized boolean which would
88 // otherwise crash on load.
89 void save(const bool t){
90 BOOST_ASSERT(0 == static_cast<int>(t) || 1 == static_cast<int>(t));
91 save_binary(& t, sizeof(t));
93 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
94 save(const std::string &s);
95 #ifndef BOOST_NO_STD_WSTRING
96 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
97 save(const std::wstring &ws);
99 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
100 save(const char * t);
101 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
102 save(const wchar_t * t);
104 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
107 BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
108 basic_binary_oprimitive(
109 std::basic_streambuf<Elem, Tr> & sb,
112 BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
113 ~basic_binary_oprimitive();
116 // we provide an optimized save for all fundamental types
117 // typedef serialization::is_bitwise_serializable<mpl::_1>
118 // use_array_optimization;
119 // workaround without using mpl lambdas
120 struct use_array_optimization {
122 #if defined(BOOST_NO_DEPENDENT_NESTED_DERIVATIONS)
124 typedef typename boost::serialization::is_bitwise_serializable< T >::type type;
127 struct apply : public boost::serialization::is_bitwise_serializable< T > {};
132 // the optimized save_array dispatches to save_binary
133 template <class ValueType>
134 void save_array(boost::serialization::array<ValueType> const& a, unsigned int)
136 save_binary(a.address(),a.count()*sizeof(ValueType));
139 void save_binary(const void *address, std::size_t count);
142 template<class Archive, class Elem, class Tr>
144 basic_binary_oprimitive<Archive, Elem, Tr>::save_binary(
149 // static_cast<std::size_t>((std::numeric_limits<std::streamsize>::max)()) >= count
151 // note: if the following assertions fail
152 // a likely cause is that the output stream is set to "text"
153 // mode where by cr characters recieve special treatment.
154 // be sure that the output stream is opened with ios::binary
156 // boost::serialization::throw_exception(
157 // archive_exception(archive_exception::output_stream_error)
159 // figure number of elements to output - round up
160 count = ( count + sizeof(Elem) - 1)
162 BOOST_ASSERT(count <= std::size_t(boost::integer_traits<std::streamsize>::const_max));
163 std::streamsize scount = m_sb.sputn(
164 static_cast<const Elem *>(address),
165 static_cast<std::streamsize>(count)
167 if(count != static_cast<std::size_t>(scount))
168 boost::serialization::throw_exception(
169 archive_exception(archive_exception::output_stream_error)
172 // static_cast<const typename OStream::char_type *>(address),
175 //BOOST_ASSERT(os.good());
179 } //namespace archive
181 #include <boost/archive/detail/abi_suffix.hpp> // pop pragmas
183 #endif // BOOST_ARCHIVE_BASIC_BINARY_OPRIMITIVE_HPP