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Add serialization for unique_ptr and shared_ptr

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This commit is contained in:
Pieter Wuille 2016-11-10 10:54:14 -08:00
parent 44adf683ad
commit 0e85204a10
1 changed files with 59 additions and 0 deletions
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59
src/serialize.h
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@ -13,6 +13,7 @@
#include <ios> #include <ios>
#include <limits> #include <limits>
#include <map> #include <map>
#include <memory>
#include <set> #include <set>
#include <stdint.h> #include <stdint.h>
#include <string> #include <string>
@ -24,6 +25,20 @@
static const unsigned int MAX_SIZE = 0x02000000; static const unsigned int MAX_SIZE = 0x02000000;
/**
* Dummy data type to identify deserializing constructors.
*
* By convention, a constructor of a type T with signature
*
* template <typename Stream> T::T(deserialize_type, Stream& s)
*
* is a deserializing constructor, which builds the type by
* deserializing it from s. If T contains const fields, this
* is likely the only way to do so.
*/
struct deserialize_type {};
constexpr deserialize_type deserialize {};
/** /**
* Used to bypass the rule against non-const reference to temporary * Used to bypass the rule against non-const reference to temporary
* where it makes sense with wrappers such as CFlatData or CTxDB * where it makes sense with wrappers such as CFlatData or CTxDB
@ -521,7 +536,17 @@ template<typename Stream, typename K, typename T, typename Pred, typename A> voi
template<typename Stream, typename K, typename Pred, typename A> void Serialize(Stream& os, const std::set<K, Pred, A>& m); template<typename Stream, typename K, typename Pred, typename A> void Serialize(Stream& os, const std::set<K, Pred, A>& m);
template<typename Stream, typename K, typename Pred, typename A> void Unserialize(Stream& is, std::set<K, Pred, A>& m); template<typename Stream, typename K, typename Pred, typename A> void Unserialize(Stream& is, std::set<K, Pred, A>& m);
/**
* shared_ptr
*/
template<typename Stream, typename T> void Serialize(Stream& os, const std::shared_ptr<const T>& p);
template<typename Stream, typename T> void Unserialize(Stream& os, std::shared_ptr<const T>& p);
/**
* unique_ptr
*/
template<typename Stream, typename T> void Serialize(Stream& os, const std::unique_ptr<const T>& p);
template<typename Stream, typename T> void Unserialize(Stream& os, std::unique_ptr<const T>& p);
@ -775,6 +800,40 @@ void Unserialize(Stream& is, std::set<K, Pred, A>& m)
/**
* unique_ptr
*/
template<typename Stream, typename T> void
Serialize(Stream& os, const std::unique_ptr<const T>& p)
{
Serialize(os, *p);
}
template<typename Stream, typename T>
void Unserialize(Stream& is, std::unique_ptr<const T>& p)
{
p.reset(new T(deserialize, is));
}
/**
* shared_ptr
*/
template<typename Stream, typename T> void
Serialize(Stream& os, const std::shared_ptr<const T>& p)
{
Serialize(os, *p);
}
template<typename Stream, typename T>
void Unserialize(Stream& is, std::shared_ptr<const T>& p)
{
p = std::make_shared<const T>(deserialize, is);
}
/** /**
* Support for ADD_SERIALIZE_METHODS and READWRITE macro * Support for ADD_SERIALIZE_METHODS and READWRITE macro
*/ */