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AQuery/server/types.h

183 lines
6.3 KiB

#ifndef _TYPES_H
#define _TYPES_H
#include <typeinfo>
#include <functional>
#include <cstdint>
#include <type_traits>
#include <string>
#ifdef _MSC_VER
#define __restrict__ __restrict
#endif
namespace types {
enum Type_t {
AINT, AFLOAT, ASTR, ADOUBLE, ALDOUBLE, ALONG, ASHORT, ADATE, ATIME, ACHAR,
AUINT, AULONG, AUSHORT, AUCHAR, NONE, ERROR
};
static constexpr const char* printf_str[] = { "%d", "%f", "%s", "%lf", "%llf", "%ld", "%hi", "%s", "%s", "%c",
"%u", "%lu", "%hu", "%hhu", "NULL" };
// TODO: deal with data/time <=> str/uint conversion
struct date_t {
uint32_t val;
date_t(const char* d) {
}
std::string toString() const;
};
struct time_t {
uint32_t val;
time_t(const char* d) {
}
std::string toString() const;
};
template <typename T>
struct Types {
typedef T type;
constexpr Types() noexcept = default;
#define ConnectTypes(f) \
f(int, AINT) \
f(float, AFLOAT) \
f(const char*, ASTR) \
f(double, ADOUBLE) \
f(long double, ALDOUBLE) \
f(long, ALONG) \
f(short, ASHORT) \
f(date_t, ADATE) \
f(time_t, ATIME) \
f(unsigned char, ACHAR) \
f(unsigned int, AUINT) \
f(unsigned long, AULONG) \
f(unsigned short, AUSHORT) \
f(unsigned char, AUCHAR)
constexpr static Type_t getType() {
#define TypeConnect(x, y) if(typeid(T) == typeid(x)) return y; else
ConnectTypes(TypeConnect)
return NONE;
}
//static constexpr inline void print(T& v);
};
#define ATypeSize(t, at) sizeof(t),
static constexpr size_t AType_sizes[] = { ConnectTypes(ATypeSize) 1 };
#define Cond(c, x, y) typename std::conditional<c, x, y>::type
#define Comp(o) (sizeof(T1) o sizeof(T2))
#define Same(x, y) (std::is_same_v<x, y>)
#define _U(x) std::is_unsigned<x>::value
#define Fp(x) std::is_floating_point<x>::value
template <class T1, class T2>
struct Coercion {
using t1 = Cond(Comp(<= ), Cond(Comp(== ), Cond(Fp(T1), T1, Cond(Fp(T2), T2, Cond(_U(T1), T2, T1))), T2), T1);
using t2 = Cond(Same(T1, T2), T1, Cond(Same(T1, const char*) || Same(T2, const char*), const char*, void));
using type = Cond(Same(t2, void), Cond(Same(T1, date_t) && Same(T2, time_t) || Same(T1, time_t) && Same(T2, time_t), void, t1), t2);
};
#define __Eq(x) (sizeof(T) == sizeof(x))
template<class T>
struct GetFPTypeImpl {
using type = Cond(__Eq(float), float, Cond(__Eq(double), double, long double));
};
template<class T>
using GetFPType = typename GetFPTypeImpl<typename std::decay<T>::type>::type;
template<class T>
struct GetLongTypeImpl {
using type = Cond(_U(T), unsigned long long, Cond(Fp(T), long double, long long));
};
template<class T>
using GetLongType = typename GetLongTypeImpl<typename std::decay<T>::type>::type;
}
#define getT(i, t) std::tuple_element_t<i, std::tuple<t...>>
template <template<typename ...> class T, typename ...Types>
struct applyTemplates {
using type = T<Types...>;
};
template <class lT, template <typename ...> class rT>
struct transTypes_s;
template <template<typename ...> class lT, typename ...T, template<typename ...> class rT>
struct transTypes_s<lT<T...>, rT> {
using type = rT<T...>;
};
// static_assert(std::is_same<transTypes<std::tuple<int, float>, std::unordered_map>, std::unordered_map<int, float>>::value);
template <class lT, template <typename ...> class rT>
using transTypes = typename transTypes_s<lT, rT>::type;
template <class ...Types>
struct record_types {};
template <class ...Types>
using record = std::tuple<Types...>;
template <class T>
struct decayS {
using type = typename std::decay<T>::type;
};
template<template<typename ...> class T, typename ...Types>
struct decayS <T<Types...>>{
using type = T<typename std::decay<Types>::type ...>;
};
template <class T>
using decays = typename decayS<typename std::decay<T>::type>::type;
template <class T>
using decay_inner = typename decayS<T>::type;
template <class, template <class...> class T>
struct instance_of_impl : std::false_type {};
template <class ...T1, template <class ...> class T2>
struct instance_of_impl<T2<T1...>, T2> : std::true_type {};
template <class T1, class T2>
struct same_class_impl : std::false_type {};
template <class ...T1s, class ...T2s, template <class...> class T1>
struct same_class_impl<T1<T1s...>, T1<T2s...>> : std::true_type {};
template <class T1, class T2>
bool same_class = same_class_impl<T1, T2>::value;
template <class T1, template <class...> class T2>
bool instance_of = instance_of_impl<T1, T2>::value;
template <class lT, template <typename ...> class rT>
using transTypes = typename transTypes_s<lT, rT>::type;
template <class lT, class vT, template <vT ...> class rT>
struct transValues_s;
template <class vT, template<class, vT ...> class lT, vT ...T, template<vT ...> class rT>
struct transValues_s<lT<vT, T...>, vT, rT> {
using type = rT<T...>;
};
#include <utility>
template <class vT, int i, template <vT ...> class rT>
using transValues = typename transValues_s<std::make_integer_sequence<vT, i>, vT, rT>::type;
template <int i, template <int ...> class rT>
using applyIntegerSequence = typename transValues_s<std::make_integer_sequence<int, i>, int, rT>::type;
template <template <class ...> class T, class ...Types>
struct decayed_impl{ typedef T<Types...> type;};
template <template <typename ...> class VT, class ...Types>
using decayed_t = typename decayed_impl<VT, Types...>::type;
template <class First = void, class...Rest>
struct get_first_impl {
typedef First first;
constexpr static size_t rest_len = sizeof...(Rest);
typedef get_first_impl<Rest...> rest;
};
template <class ...T>
using get_first = typename get_first_impl<T...>::first;
template <class T>
struct value_type_impl { typedef T type; };
template <template <class...> class VT, class ...V>
struct value_type_impl<VT<V...>> { typedef get_first<V...> type; };
template <class T>
using value_type = typename value_type_impl<T>::type;
template <class ...T>
using get_first = typename get_first_impl<T...>::first;
template <class T>
struct value_type_rec_impl { typedef T type; };
template <template <class...> class VT, class ...V>
struct value_type_rec_impl<VT<V...>> { typedef typename value_type_rec_impl<get_first<int>>::type type; };
template <class T>
using value_type_r = typename value_type_rec_impl<T>::type;
#endif // !_TYPES_H