danicoin/src/serialization/serialization.h
2014-07-23 15:03:52 +02:00

181 lines
5.9 KiB
C++

// Copyright (c) 2014, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
/* serialization.h
*
* Simple templated serialization API */
#pragma once
#include <vector>
#include <string>
#include <boost/type_traits/is_integral.hpp>
#include <boost/type_traits/integral_constant.hpp>
template <class T>
struct is_blob_type { typedef boost::false_type type; };
template <class T>
struct has_free_serializer { typedef boost::true_type type; };
template <class Archive, class T>
struct serializer
{
static bool serialize(Archive &ar, T &v) {
return serialize(ar, v, typename boost::is_integral<T>::type(), typename is_blob_type<T>::type());
}
static bool serialize(Archive &ar, T &v, boost::false_type, boost::true_type) {
ar.serialize_blob(&v, sizeof(v));
return true;
}
static bool serialize(Archive &ar, T &v, boost::true_type, boost::false_type) {
ar.serialize_int(v);
return true;
}
static bool serialize(Archive &ar, T &v, boost::false_type, boost::false_type) {
//serialize_custom(ar, v, typename has_free_serializer<T>::type());
return v.do_serialize(ar);
}
static void serialize_custom(Archive &ar, T &v, boost::true_type) {
}
};
template <class Archive, class T>
inline bool do_serialize(Archive &ar, T &v)
{
return ::serializer<Archive, T>::serialize(ar, v);
}
#ifndef __GNUC__
#ifndef constexpr
#define constexpr
#endif
#endif
#define BLOB_SERIALIZER(T) \
template<> struct is_blob_type<T> { typedef boost::true_type type; }
#define FREE_SERIALIZER(T) \
template<> struct has_free_serializer<T> { typedef boost::true_type type; }
#define VARIANT_TAG(A, T, Tg) \
template <bool W> struct variant_serialization_traits<A<W>, T> { static inline typename A<W>::variant_tag_type get_tag() { return Tg; } }
#define BEGIN_SERIALIZE() \
template <bool W, template <bool> class Archive> bool do_serialize(Archive<W> &ar) {
#define BEGIN_SERIALIZE_OBJECT() \
template <bool W, template <bool> class Archive> bool do_serialize(Archive<W> &ar) { ar.begin_object(); bool r = do_serialize_object(ar); ar.end_object(); return r; } \
template <bool W, template <bool> class Archive> bool do_serialize_object(Archive<W> &ar){
#define PREPARE_CUSTOM_VECTOR_SERIALIZATION(size, vec) ::serialization::detail::prepare_custom_vector_serialization(size, vec, typename Archive<W>::is_saving())
#define END_SERIALIZE() return true;}
#define VALUE(f) \
do { \
ar.tag(#f); \
bool r = ::do_serialize(ar, f); \
if (!r || !ar.stream().good()) return false; \
} while(0);
#define FIELD_N(t, f) \
do { \
ar.tag(t); \
bool r = ::do_serialize(ar, f); \
if (!r || !ar.stream().good()) return false; \
} while(0);
#define FIELDS(f) \
do { \
bool r = ::do_serialize(ar, f); \
if (!r || !ar.stream().good()) return false; \
} while(0);
#define FIELD(f) \
do { \
ar.tag(#f); \
bool r = ::do_serialize(ar, f); \
if (!r || !ar.stream().good()) return false; \
} while(0);
#define VARINT_FIELD(f) \
do { \
ar.tag(#f); \
ar.serialize_varint(f); \
if (!ar.stream().good()) return false; \
} while(0);
#define VARINT_FIELD_N(t, f) \
do { \
ar.tag(t); \
ar.serialize_varint(f); \
if (!ar.stream().good()) return false; \
} while(0);
namespace serialization {
namespace detail
{
template <typename T>
void prepare_custom_vector_serialization(size_t size, std::vector<T>& vec, const boost::mpl::bool_<true>& /*is_saving*/)
{
}
template <typename T>
void prepare_custom_vector_serialization(size_t size, std::vector<T>& vec, const boost::mpl::bool_<false>& /*is_saving*/)
{
vec.resize(size);
}
template<class Stream>
bool do_check_stream_state(Stream& s, boost::mpl::bool_<true>)
{
return s.good();
}
template<class Stream>
bool do_check_stream_state(Stream& s, boost::mpl::bool_<false>)
{
bool result = false;
if (s.good())
{
std::ios_base::iostate state = s.rdstate();
result = EOF == s.peek();
s.clear(state);
}
return result;
}
}
template<class Archive>
bool check_stream_state(Archive& ar)
{
return detail::do_check_stream_state(ar.stream(), typename Archive::is_saving());
}
template <class Archive, class T>
inline bool serialize(Archive &ar, T &v)
{
bool r = do_serialize(ar, v);
return r && check_stream_state(ar);
}
}
#include "string.h"
#include "vector.h"