mirror of
https://github.com/vcmi/vcmi.git
synced 2024-12-22 22:13:35 +02:00
541 lines
12 KiB
C++
541 lines
12 KiB
C++
/*
|
|
* BinaryDeserializer.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 "CSerializer.h"
|
|
#include "SerializerReflection.h"
|
|
#include "ESerializationVersion.h"
|
|
#include "../mapObjects/CGHeroInstance.h"
|
|
|
|
VCMI_LIB_NAMESPACE_BEGIN
|
|
|
|
class DLL_LINKAGE CLoaderBase
|
|
{
|
|
protected:
|
|
IBinaryReader * reader;
|
|
public:
|
|
CLoaderBase(IBinaryReader * r): reader(r){};
|
|
|
|
inline void read(void * data, unsigned size, bool reverseEndianness)
|
|
{
|
|
auto bytePtr = reinterpret_cast<std::byte*>(data);
|
|
|
|
reader->read(bytePtr, size);
|
|
if(reverseEndianness)
|
|
std::reverse(bytePtr, bytePtr + size);
|
|
};
|
|
};
|
|
|
|
/// Main class for deserialization of classes from binary form
|
|
/// Effectively revesed version of BinarySerializer
|
|
class BinaryDeserializer : public CLoaderBase
|
|
{
|
|
template<typename Fake, typename T>
|
|
static bool loadIfStackInstance(T &data)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
template<typename Fake>
|
|
bool loadIfStackInstance(const CStackInstance* &data)
|
|
{
|
|
CArmedInstance * armyPtr = nullptr;
|
|
ObjectInstanceID armyID;
|
|
SlotID slot;
|
|
load(armyID);
|
|
load(slot);
|
|
|
|
if (armyID == ObjectInstanceID::NONE)
|
|
return false;
|
|
|
|
if(reader->smartVectorMembersSerialization)
|
|
{
|
|
if(const auto *info = reader->getVectorizedTypeInfo<CArmedInstance, ObjectInstanceID>())
|
|
armyPtr = reader->getVectorItemFromId<CArmedInstance, ObjectInstanceID>(*info, armyID);
|
|
}
|
|
|
|
if(slot != SlotID::COMMANDER_SLOT_PLACEHOLDER)
|
|
{
|
|
assert(armyPtr->hasStackAtSlot(slot));
|
|
data = armyPtr->stacks[slot];
|
|
}
|
|
else
|
|
{
|
|
auto * hero = dynamic_cast<CGHeroInstance *>(armyPtr);
|
|
assert(hero);
|
|
assert(hero->commander);
|
|
data = hero->commander;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
STRONG_INLINE uint32_t readAndCheckLength()
|
|
{
|
|
uint32_t length;
|
|
load(length);
|
|
//NOTE: also used for h3m's embedded in campaigns, so it may be quite large in some cases (e.g. XXL maps with multiple objects)
|
|
if(length > 1000000)
|
|
{
|
|
logGlobal->warn("Warning: very big length: %d", length);
|
|
reader->reportState(logGlobal);
|
|
};
|
|
return length;
|
|
}
|
|
|
|
int write(const void * data, unsigned size);
|
|
|
|
public:
|
|
using Version = ESerializationVersion;
|
|
|
|
bool reverseEndianness; //if source has different endianness than us, we reverse bytes
|
|
Version version;
|
|
|
|
std::vector<std::string> loadedStrings;
|
|
std::map<uint32_t, Serializeable*> loadedPointers;
|
|
std::map<const Serializeable*, std::shared_ptr<Serializeable>> loadedSharedPointers;
|
|
IGameCallback * cb = nullptr;
|
|
static constexpr bool trackSerializedPointers = true;
|
|
static constexpr bool saving = false;
|
|
bool loadingGamestate = false;
|
|
|
|
bool hasFeature(Version what) const
|
|
{
|
|
return version >= what;
|
|
};
|
|
|
|
DLL_LINKAGE BinaryDeserializer(IBinaryReader * r);
|
|
|
|
template<class T>
|
|
BinaryDeserializer & operator&(T & t)
|
|
{
|
|
this->load(t);
|
|
return * this;
|
|
}
|
|
|
|
int64_t loadEncodedInteger()
|
|
{
|
|
uint64_t valueUnsigned = 0;
|
|
uint_fast8_t offset = 0;
|
|
|
|
for (;;)
|
|
{
|
|
uint8_t byteValue;
|
|
load(byteValue);
|
|
|
|
if ((byteValue & 0x80) != 0)
|
|
{
|
|
valueUnsigned |= static_cast<uint64_t>(byteValue & 0x7f) << offset;
|
|
offset += 7;
|
|
}
|
|
else
|
|
{
|
|
valueUnsigned |= static_cast<uint64_t>(byteValue & 0x3f) << offset;
|
|
bool isNegative = (byteValue & 0x40) != 0;
|
|
if (isNegative)
|
|
return -static_cast<int64_t>(valueUnsigned);
|
|
else
|
|
return valueUnsigned;
|
|
}
|
|
}
|
|
}
|
|
|
|
template < class T, typename std::enable_if_t < std::is_floating_point_v<T>, int > = 0 >
|
|
void load(T &data)
|
|
{
|
|
this->read(static_cast<void *>(&data), sizeof(data), reverseEndianness);
|
|
}
|
|
|
|
template < class T, typename std::enable_if_t < std::is_integral_v<T> && !std::is_same_v<T, bool>, int > = 0 >
|
|
void load(T &data)
|
|
{
|
|
if constexpr (sizeof(T) == 1)
|
|
{
|
|
this->read(static_cast<void *>(&data), sizeof(data), reverseEndianness);
|
|
}
|
|
else
|
|
{
|
|
static_assert(!std::is_same_v<uint64_t, T>, "Serialization of unsigned 64-bit value may not work in some cases");
|
|
if (hasFeature(Version::COMPACT_INTEGER_SERIALIZATION))
|
|
data = loadEncodedInteger();
|
|
else
|
|
this->read(static_cast<void *>(&data), sizeof(data), reverseEndianness);
|
|
}
|
|
}
|
|
|
|
template < typename T, typename std::enable_if_t < is_serializeable<BinaryDeserializer, T>::value, int > = 0 >
|
|
void load(T &data)
|
|
{
|
|
////that const cast is evil because it allows to implicitly overwrite const objects when deserializing
|
|
typedef typename std::remove_const_t<T> nonConstT;
|
|
auto & hlp = const_cast<nonConstT &>(data);
|
|
hlp.serialize(*this);
|
|
}
|
|
template < typename T, typename std::enable_if_t < std::is_array_v<T>, int > = 0 >
|
|
void load(T &data)
|
|
{
|
|
uint32_t size = std::size(data);
|
|
for(uint32_t i = 0; i < size; i++)
|
|
load(data[i]);
|
|
}
|
|
|
|
void load(Version &data)
|
|
{
|
|
this->read(static_cast<void *>(&data), sizeof(data), reverseEndianness);
|
|
}
|
|
|
|
template < typename T, typename std::enable_if_t < std::is_enum_v<T>, int > = 0 >
|
|
void load(T &data)
|
|
{
|
|
int32_t read;
|
|
load( read );
|
|
data = static_cast<T>(read);
|
|
}
|
|
|
|
template < typename T, typename std::enable_if_t < std::is_same_v<T, bool>, int > = 0 >
|
|
void load(T &data)
|
|
{
|
|
uint8_t read;
|
|
load( read );
|
|
data = static_cast<bool>(read);
|
|
}
|
|
|
|
template <typename T, typename std::enable_if_t < !std::is_same_v<T, bool >, int > = 0>
|
|
void load(std::vector<T> &data)
|
|
{
|
|
uint32_t length = readAndCheckLength();
|
|
data.resize(length);
|
|
for(uint32_t i=0;i<length;i++)
|
|
load( data[i]);
|
|
}
|
|
|
|
template <typename T, typename std::enable_if_t < !std::is_same_v<T, bool >, int > = 0>
|
|
void load(std::deque<T> & data)
|
|
{
|
|
uint32_t length = readAndCheckLength();
|
|
data.resize(length);
|
|
for(uint32_t i = 0; i < length; i++)
|
|
load(data[i]);
|
|
}
|
|
|
|
template < typename T, typename std::enable_if_t < std::is_pointer_v<T>, int > = 0 >
|
|
void load(T &data)
|
|
{
|
|
bool isNull;
|
|
load( isNull );
|
|
if(isNull)
|
|
{
|
|
data = nullptr;
|
|
return;
|
|
}
|
|
|
|
if(reader->smartVectorMembersSerialization)
|
|
{
|
|
typedef typename std::remove_const_t<typename std::remove_pointer_t<T>> TObjectType; //eg: const CGHeroInstance * => CGHeroInstance
|
|
typedef typename VectorizedTypeFor<TObjectType>::type VType; //eg: CGHeroInstance -> CGobjectInstance
|
|
typedef typename VectorizedIDType<TObjectType>::type IDType;
|
|
if(const auto *info = reader->getVectorizedTypeInfo<VType, IDType>())
|
|
{
|
|
IDType id;
|
|
load(id);
|
|
if(id != IDType(-1))
|
|
{
|
|
data = static_cast<T>(reader->getVectorItemFromId<VType, IDType>(*info, id));
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(reader->sendStackInstanceByIds)
|
|
{
|
|
bool gotLoaded = loadIfStackInstance<void>(data);
|
|
if(gotLoaded)
|
|
return;
|
|
}
|
|
|
|
uint32_t pid = 0xffffffff; //pointer id (or maybe rather pointee id)
|
|
if(trackSerializedPointers)
|
|
{
|
|
load( pid ); //get the id
|
|
auto i = loadedPointers.find(pid); //lookup
|
|
|
|
if(i != loadedPointers.end())
|
|
{
|
|
// We already got this pointer
|
|
// Cast it in case we are loading it to a non-first base pointer
|
|
data = dynamic_cast<T>(i->second);
|
|
return;
|
|
}
|
|
}
|
|
//get type id
|
|
uint16_t tid;
|
|
load( tid );
|
|
|
|
typedef typename std::remove_pointer_t<T> npT;
|
|
typedef typename std::remove_const_t<npT> ncpT;
|
|
if(!tid)
|
|
{
|
|
data = ClassObjectCreator<ncpT>::invoke(cb);
|
|
ptrAllocated(data, pid);
|
|
load(*data);
|
|
}
|
|
else
|
|
{
|
|
auto * app = CSerializationApplier::getInstance().getApplier(tid);
|
|
if(app == nullptr)
|
|
{
|
|
logGlobal->error("load %d %d - no loader exists", tid, pid);
|
|
data = nullptr;
|
|
return;
|
|
}
|
|
auto dataNonConst = dynamic_cast<ncpT*>(app->createPtr(*this, cb));
|
|
data = dataNonConst;
|
|
ptrAllocated(data, pid);
|
|
app->loadPtr(*this, cb, dataNonConst);
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void ptrAllocated(T *ptr, uint32_t pid)
|
|
{
|
|
if(trackSerializedPointers && pid != 0xffffffff)
|
|
loadedPointers[pid] = const_cast<Serializeable*>(dynamic_cast<const Serializeable*>(ptr)); //add loaded pointer to our lookup map; cast is to avoid errors with const T* pt
|
|
}
|
|
|
|
template <typename T>
|
|
void load(std::shared_ptr<T> &data)
|
|
{
|
|
typedef typename std::remove_const_t<T> NonConstT;
|
|
NonConstT *internalPtr;
|
|
load(internalPtr);
|
|
|
|
const auto * internalPtrDerived = static_cast<Serializeable*>(internalPtr);
|
|
|
|
if(internalPtr)
|
|
{
|
|
auto itr = loadedSharedPointers.find(internalPtrDerived);
|
|
if(itr != loadedSharedPointers.end())
|
|
{
|
|
// This pointers is already loaded. The "data" needs to be pointed to it,
|
|
// so their shared state is actually shared.
|
|
data = std::static_pointer_cast<T>(itr->second);
|
|
}
|
|
else
|
|
{
|
|
auto hlp = std::shared_ptr<NonConstT>(internalPtr);
|
|
data = hlp;
|
|
loadedSharedPointers[internalPtrDerived] = std::static_pointer_cast<Serializeable>(hlp);
|
|
}
|
|
}
|
|
else
|
|
data.reset();
|
|
}
|
|
|
|
void load(std::monostate & data)
|
|
{
|
|
// no-op
|
|
}
|
|
|
|
template <typename T>
|
|
void load(std::shared_ptr<const T> & data)
|
|
{
|
|
std::shared_ptr<T> nonConstData;
|
|
|
|
load(nonConstData);
|
|
|
|
data = nonConstData;
|
|
}
|
|
|
|
template <typename T>
|
|
void load(std::unique_ptr<T> &data)
|
|
{
|
|
T *internalPtr;
|
|
load( internalPtr );
|
|
data.reset(internalPtr);
|
|
}
|
|
template <typename T, size_t N>
|
|
void load(std::array<T, N> &data)
|
|
{
|
|
for(uint32_t i = 0; i < N; i++)
|
|
load( data[i] );
|
|
}
|
|
template <typename T>
|
|
void load(std::set<T> &data)
|
|
{
|
|
uint32_t length = readAndCheckLength();
|
|
data.clear();
|
|
T ins;
|
|
for(uint32_t i=0;i<length;i++)
|
|
{
|
|
load( ins );
|
|
data.insert(ins);
|
|
}
|
|
}
|
|
template <typename T, typename U>
|
|
void load(std::unordered_set<T, U> &data)
|
|
{
|
|
uint32_t length = readAndCheckLength();
|
|
data.clear();
|
|
T ins;
|
|
for(uint32_t i=0;i<length;i++)
|
|
{
|
|
load(ins);
|
|
data.insert(ins);
|
|
}
|
|
}
|
|
template <typename T>
|
|
void load(std::list<T> &data)
|
|
{
|
|
uint32_t length = readAndCheckLength();
|
|
data.clear();
|
|
T ins;
|
|
for(uint32_t i=0;i<length;i++)
|
|
{
|
|
load(ins);
|
|
data.push_back(ins);
|
|
}
|
|
}
|
|
template <typename T1, typename T2>
|
|
void load(std::pair<T1,T2> &data)
|
|
{
|
|
load(data.first);
|
|
load(data.second);
|
|
}
|
|
|
|
template <typename T1, typename T2>
|
|
void load(std::unordered_map<T1,T2> &data)
|
|
{
|
|
uint32_t length = readAndCheckLength();
|
|
data.clear();
|
|
T1 key;
|
|
for(uint32_t i=0;i<length;i++)
|
|
{
|
|
load(key);
|
|
load(data[key]);
|
|
}
|
|
}
|
|
|
|
template <typename T1, typename T2>
|
|
void load(std::map<T1,T2> &data)
|
|
{
|
|
uint32_t length = readAndCheckLength();
|
|
data.clear();
|
|
T1 key;
|
|
for(uint32_t i=0;i<length;i++)
|
|
{
|
|
load(key);
|
|
load(data[key]);
|
|
}
|
|
}
|
|
void load(std::string &data)
|
|
{
|
|
if (hasFeature(Version::COMPACT_STRING_SERIALIZATION))
|
|
{
|
|
int32_t length;
|
|
load(length);
|
|
|
|
if (length < 0)
|
|
{
|
|
int32_t stringID = -length - 1; // -1, -2 ... -> 0, 1 ...
|
|
data = loadedStrings[stringID];
|
|
}
|
|
if (length == 0)
|
|
{
|
|
data = {};
|
|
}
|
|
if (length > 0)
|
|
{
|
|
data.resize(length);
|
|
this->read(static_cast<void *>(data.data()), length, false);
|
|
loadedStrings.push_back(data);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
uint32_t length = readAndCheckLength();
|
|
data.resize(length);
|
|
this->read(static_cast<void *>(data.data()), length, false);
|
|
}
|
|
}
|
|
|
|
template<typename... TN>
|
|
void load(std::variant<TN...> & data)
|
|
{
|
|
int32_t which;
|
|
load( which );
|
|
assert(which < sizeof...(TN));
|
|
|
|
// Create array of variants that contains all default-constructed alternatives
|
|
const std::variant<TN...> table[] = { TN{ }... };
|
|
// use appropriate alternative for result
|
|
data = table[which];
|
|
// perform actual load via std::visit dispatch
|
|
std::visit([&](auto& o) { load(o); }, data);
|
|
}
|
|
|
|
template<typename T>
|
|
void load(std::optional<T> & data)
|
|
{
|
|
uint8_t present;
|
|
load( present );
|
|
if(present)
|
|
{
|
|
//TODO: replace with emplace once we start request Boost 1.56+, see PR360
|
|
T t;
|
|
load(t);
|
|
data = std::make_optional(std::move(t));
|
|
}
|
|
else
|
|
{
|
|
data = std::optional<T>();
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void load(boost::multi_array<T, 3> & data)
|
|
{
|
|
uint32_t length = readAndCheckLength();
|
|
uint32_t x;
|
|
uint32_t y;
|
|
uint32_t z;
|
|
load(x);
|
|
load(y);
|
|
load(z);
|
|
data.resize(boost::extents[x][y][z]);
|
|
assert(length == data.num_elements()); //x*y*z should be equal to number of elements
|
|
for(uint32_t i = 0; i < length; i++)
|
|
load(data.data()[i]);
|
|
}
|
|
template <std::size_t T>
|
|
void load(std::bitset<T> &data)
|
|
{
|
|
static_assert(T <= 64);
|
|
if constexpr (T <= 16)
|
|
{
|
|
uint16_t read;
|
|
load(read);
|
|
data = read;
|
|
}
|
|
else if constexpr (T <= 32)
|
|
{
|
|
uint32_t read;
|
|
load(read);
|
|
data = read;
|
|
}
|
|
else if constexpr (T <= 64)
|
|
{
|
|
uint64_t read;
|
|
load(read);
|
|
data = read;
|
|
}
|
|
}
|
|
};
|
|
|
|
VCMI_LIB_NAMESPACE_END
|