boost/serialization/collections_load_imp.hpp
#ifndef BOOST_SERIALIZATION_COLLECTIONS_LOAD_IMP_HPP
#define BOOST_SERIALIZATION_COLLECTIONS_LOAD_IMP_HPP
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#if defined(_MSC_VER) && (_MSC_VER <= 1020)
# pragma warning (disable : 4786) // too long name, harmless warning
#endif
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// collections_load_imp.hpp: serialization for loading stl collections
// (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.
// helper function templates for serialization of collections
#include <boost/config.hpp>
#include <boost/detail/workaround.hpp>
#include <boost/aligned_storage.hpp>
#include <boost/serialization/access.hpp>
#include <boost/serialization/nvp.hpp>
namespace boost{
namespace serialization {
namespace stl {
//////////////////////////////////////////////////////////////////////
// implementation of serialization for STL containers
//
// reserve space on stack for an object of type T without actually
// construction such an object
template<typename T >
struct stack_allocate
{
T * address() {
return static_cast<T*>(storage_.address());
}
T & reference() {
return * address();
}
private:
typedef BOOST_DEDUCED_TYPENAME boost::aligned_storage<
sizeof(T),
#if BOOST_WORKAROUND(__BORLANDC__,BOOST_TESTED_AT(0x564))
8
#else
boost::alignment_of<T>::value
#endif
> type;
type storage_;
};
// construct element on the stack
template<class Archive, class T>
struct stack_construct : public stack_allocate<T>
{
stack_construct(Archive & ar){
// note borland emits a no-op without the explicit namespace
boost::serialization::load_construct_data(ar, this->address(), 0U);
}
~stack_construct(){
this->address()->~T(); // undo load_construct_data above
}
};
// sequential container input
template<class Archive, class Container>
struct archive_input_seq
{
inline void operator()(Archive &ar, Container &s)
{
typedef BOOST_DEDUCED_TYPENAME Container::value_type type;
stack_construct<Archive, type> t(ar);
// borland fails silently w/o full namespace
ar >> boost::serialization::make_nvp("item", t.reference());
s.push_back(t.reference());
}
};
// map input
template<class Archive, class Container>
struct archive_input_map
{
inline void operator()(Archive &ar, Container &s)
{
#if BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1)
typedef BOOST_DEDUCED_TYPENAME std::pair<
BOOST_DEDUCED_TYPENAME Container::key_type,
BOOST_DEDUCED_TYPENAME Container::referent_type
> type;
#else
typedef BOOST_DEDUCED_TYPENAME std::pair<
BOOST_DEDUCED_TYPENAME Container::key_type,
BOOST_DEDUCED_TYPENAME Container::mapped_type
> type;
#endif
stack_construct<Archive, type> t(ar);
// borland fails silently w/o full namespace
ar >> boost::serialization::make_nvp("item", t.reference());
s.insert(t.reference());
}
};
// other associative container
template<class Archive, class Container>
struct archive_input_assoc
{
inline void operator()(Archive &ar, Container &s)
{
typedef BOOST_DEDUCED_TYPENAME Container::value_type type;
stack_construct<Archive, type> t(ar);
// borland fails silently w/o full namespace
ar >> boost::serialization::make_nvp("item", t.reference());
// s.insert(s.end(),t.reference());
// s.insert(s.begin(),t.reference());
s.insert(t.reference());
}
};
template<class Container>
class reserve_imp
{
public:
void operator()(Container &s, unsigned int count) const {
s.reserve(count);
}
};
template<class Container>
class no_reserve_imp
{
public:
void operator()(Container & /* s */, unsigned int /* count */) const{}
};
template<class Archive, class Container, class InputFunction, class R>
inline void load_collection(Archive & ar, Container &s)
{
s.clear();
// retrieve number of elements
unsigned int count;
ar >> BOOST_SERIALIZATION_NVP(count);
R rx;
rx(s, count);
InputFunction ifunc;
while(count-- > 0){
ifunc(ar, s);
}
}
} // namespace stl
} // namespace serialization
} // namespace boost
#endif //BOOST_SERIALIZATION_COLLECTIONS_LOAD_IMP_HPP