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/*
* CSerializer.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
#include "../ConstTransitivePtr.h"
#include "../GameConstants.h"
VCMI_LIB_NAMESPACE_BEGIN
const std::string SAVEGAME_MAGIC = "VCMISVG";
class CHero;
class CGHeroInstance;
class CGObjectInstance;
class CGameState;
class LibClasses;
extern DLL_LINKAGE LibClasses * VLC;
struct TypeComparer
{
bool operator()(const std::type_info *a, const std::type_info *b) const
{
//#ifndef __APPLE__
// return a->before(*b);
//#else
return strcmp(a->name(), b->name()) < 0;
//#endif
}
};
template <typename ObjType, typename IdType>
struct VectorizedObjectInfo
{
const std::vector<ConstTransitivePtr<ObjType> > *vector; //pointer to the appropriate vector
std::function<IdType(const ObjType &)> idRetriever;
VectorizedObjectInfo(const std::vector< ConstTransitivePtr<ObjType> > *Vector, std::function<IdType(const ObjType &)> IdGetter)
:vector(Vector), idRetriever(IdGetter)
{
}
};
/// Base class for serializers capable of reading or writing data
class DLL_LINKAGE CSerializer : boost::noncopyable
{
template<typename Numeric, std::enable_if_t<std::is_arithmetic_v<Numeric>, bool> = true>
static int32_t idToNumber(const Numeric &t)
{
return t;
}
template<typename IdentifierType, std::enable_if_t<std::is_base_of_v<IdentifierBase, IdentifierType>, bool> = true>
static int32_t idToNumber(const IdentifierType &t)
{
return t.getNum();
}
template <typename T, typename U>
void registerVectoredType(const std::vector<T*> *Vector, const std::function<U(const T&)> &idRetriever)
{
vectors[&typeid(T)] = VectorizedObjectInfo<T, U>(Vector, idRetriever);
}
template <typename T, typename U>
void registerVectoredType(const std::vector<ConstTransitivePtr<T> > *Vector, const std::function<U(const T&)> &idRetriever)
{
vectors[&typeid(T)] = VectorizedObjectInfo<T, U>(Vector, idRetriever);
}
using TTypeVecMap = std::map<const std::type_info *, std::any, TypeComparer>;
TTypeVecMap vectors; //entry must be a pointer to vector containing pointers to the objects of key type
public:
bool smartVectorMembersSerialization = false;
bool sendStackInstanceByIds = false;
~CSerializer();
virtual void reportState(vstd::CLoggerBase * out){};
template <typename T, typename U>
const VectorizedObjectInfo<T, U> *getVectorizedTypeInfo()
{
const std::type_info *myType = nullptr;
myType = &typeid(T);
auto i = vectors.find(myType);
if(i == vectors.end())
return nullptr;
else
{
assert(i->second.has_value());
#ifndef __APPLE__
assert(i->second.type() == typeid(VectorizedObjectInfo<T, U>));
#endif
auto *ret = std::any_cast<VectorizedObjectInfo<T, U>>(&i->second);
return ret;
}
}
template <typename T, typename U>
T* getVectorItemFromId(const VectorizedObjectInfo<T, U> &oInfo, U id) const
{
si32 idAsNumber = idToNumber(id);
assert(oInfo.vector);
assert(static_cast<si32>(oInfo.vector->size()) > idAsNumber);
return const_cast<T*>((*oInfo.vector)[idAsNumber].get());
}
template <typename T, typename U>
U getIdFromVectorItem(const VectorizedObjectInfo<T, U> &oInfo, const T* obj) const
{
if(!obj)
return U(-1);
return oInfo.idRetriever(*obj);
}
void addStdVecItems(CGameState *gs, LibClasses *lib = VLC);
};
/// Helper to detect classes with user-provided serialize(S&, int version) method
template<class S, class T>
struct is_serializeable
{
using Yes = char (&)[1];
using No = char (&)[2];
template<class U>
static Yes test(U * data, S* arg1 = nullptr, typename std::enable_if_t<std::is_void_v<decltype(data->serialize(*arg1))>> * = nullptr);
static No test(...);
static const bool value = sizeof(Yes) == sizeof(is_serializeable::test((typename std::remove_reference_t<typename std::remove_cv_t<T>>*)nullptr));
};
template <typename T> //metafunction returning CGObjectInstance if T is its derivate or T elsewise
struct VectorizedTypeFor
{
using type = std::conditional_t<std::is_base_of_v<CGObjectInstance, T>, CGObjectInstance, T>;
};
template <>
struct VectorizedTypeFor<CGHeroInstance>
{
using type = CGHeroInstance;
};
template <typename T>
struct VectorizedIDType
{
using type = std::conditional_t<std::is_base_of_v<CGObjectInstance, T>, ObjectInstanceID, int32_t>;
};
template <>
struct VectorizedIDType<CArtifactInstance>
{
using type = ArtifactInstanceID;
};
template <>
struct VectorizedIDType<CGHeroInstance>
{
using type = HeroTypeID;
};
/// Base class for deserializers
class DLL_LINKAGE IBinaryReader : public virtual CSerializer
{
public:
virtual int read(std::byte * data, unsigned size) = 0;
};
/// Base class for serializers
class DLL_LINKAGE IBinaryWriter : public virtual CSerializer
{
public:
virtual int write(const std::byte * data, unsigned size) = 0;
};
VCMI_LIB_NAMESPACE_END
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