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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef CR_MAP_TYPE_IMPL_H
#define CR_MAP_TYPE_IMPL_H
#include "creg_cond.h"
#include "System/UnorderedMap.hpp"
#include <map>
#ifdef USING_CREG
#include <string>
namespace creg
{
// implement map insert() function with an interface common to all map types
template<typename T>
struct MapInserter
{
typedef typename T::iterator iterator;
typedef typename T::value_type value_type;
iterator insert(T& m, value_type& p) {
// std::map<>::insert returns std::pair<iterator, bool>.
return m.insert(p).first;
}
};
template<typename TKey, typename TValue>
struct MapInserter<std::multimap<TKey, TValue> >
{
typedef typename std::multimap<TKey, TValue>::iterator iterator;
typedef typename std::multimap<TKey, TValue>::value_type value_type;
iterator insert(std::multimap<TKey, TValue>& m, value_type& p) {
// std::multimap<>::insert returns iterator.
return m.insert(p);
}
};
// map/multimap, this template assumes that the map key type is copyable
template<typename T>
struct MapType : public IType
{
std::shared_ptr<IType> keyType, mappedType;
typedef typename T::iterator iterator;
MapType(std::shared_ptr<IType> keyType, std::shared_ptr<IType> mappedType) :
keyType(keyType), mappedType(mappedType) {}
~MapType() {
}
void Serialize(ISerializer *s, void *instance)
{
T& ct = *(T*)instance;
if (s->IsWriting()) {
int size = ct.size();
s->SerializeInt(&size, sizeof(int));
for (iterator i = ct.begin(); i != ct.end(); ++i) {
keyType->Serialize(s, (void*) &i->first);
mappedType->Serialize(s, &i->second);
}
} else {
ct.clear();
int size;
s->SerializeInt(&size, sizeof(int));
for (int a = 0; a < size; a++) {
typename T::value_type pt;
// only allow copying of the key type
keyType->Serialize(s, (void*) &pt.first);
iterator i = MapInserter<T>().insert(ct, pt);
mappedType->Serialize(s, &i->second);
}
}
}
std::string GetName() const { return "map<" + keyType->GetName() + ", " + mappedType->GetName() + ">"; }
size_t GetSize() const { return sizeof(T); }
};
// Map type
template<typename TKey, typename TValue>
struct DeduceType<std::map<TKey, TValue> > {
static std::shared_ptr<IType> Get() {
return std::shared_ptr<IType>(new MapType<std::map<TKey, TValue> >(DeduceType<TKey>::Get(), DeduceType<TValue>::Get()));
}
};
// Multimap
template<typename TKey, typename TValue>
struct DeduceType<std::multimap<TKey, TValue> > {
static std::shared_ptr<IType> Get() {
return std::shared_ptr<IType>(new MapType<std::multimap<TKey, TValue> >(DeduceType<TKey>::Get(), DeduceType<TValue>::Get()));
}
};
// Hash map
template<typename TKey, typename TValue>
struct DeduceType<spring::unordered_map<TKey, TValue> > {
static std::shared_ptr<IType> Get() {
return std::shared_ptr<IType>(new MapType<spring::unordered_map<TKey, TValue> >(DeduceType<TKey>::Get(), DeduceType<TValue>::Get()));
}
};
template<typename TKey, typename TValue>
struct DeduceType<spring::unsynced_map<TKey, TValue> > {
static std::shared_ptr<IType> Get() {
return std::shared_ptr<IType>(new MapType<spring::unsynced_map<TKey, TValue> >(DeduceType<TKey>::Get(), DeduceType<TValue>::Get()));
}
};
template<typename T>
struct PairType : public IType
{
PairType(std::shared_ptr<IType> first, std::shared_ptr<IType> second):
firstType(first), secondType(second) {}
~PairType() {
}
std::shared_ptr<IType> firstType, secondType;
void Serialize(ISerializer *s, void *instance)
{
T& p = *(T*)instance;
firstType->Serialize(s, &p.first);
secondType->Serialize(s, &p.second);
}
std::string GetName() const { return "pair<" + firstType->GetName() + "," + secondType->GetName() + ">"; }
size_t GetSize() const { return sizeof(T); }
};
// std::pair
template<typename TFirst, typename TSecond>
struct DeduceType<std::pair<TFirst, TSecond> >
{
static std::shared_ptr<IType> Get() {
return std::shared_ptr<IType>(new PairType<std::pair<TFirst, TSecond> >(DeduceType<TFirst>::Get(), DeduceType<TSecond>::Get()));
}
};
}
#endif // USING_CREG
#endif // CR_MAP_TYPE_IMPL_H
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