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feat(typetraits): add TypeTraits/PrimaryType.h and the corresponding testing

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This commit is contained in:
_Redstone_c_
2021-12-10 21:43:57 +08:00
parent cfb53c21e0
commit 60b4ec6f58
4 changed files with 222 additions and 0 deletions
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13
Redcraft.Utility/Source/Public/Testing/TypeTraitsTesting.h Normal file
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#pragma once
#include "CoreTypes.h"
NAMESPACE_REDCRAFT_BEGIN
NAMESPACE_MODULE_BEGIN(Redcraft)
NAMESPACE_MODULE_BEGIN(Utility)
void REDCRAFTUTILITY_API TestTypeTraits();
NAMESPACE_MODULE_END(Utility)
NAMESPACE_MODULE_END(Redcraft)
NAMESPACE_REDCRAFT_END

52
Redcraft.Utility/Source/Public/TypeTraits/HelperClasses.h Normal file
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#pragma once
#include "CoreTypes.h"
NAMESPACE_REDCRAFT_BEGIN
NAMESPACE_MODULE_BEGIN(Redcraft)
NAMESPACE_MODULE_BEGIN(Utility)
NAMESPACE_BEGIN(TypeTraits)
template <typename InType, InType InValue>
struct TConstant
{
using Type = InType;
static constexpr Type Value = InValue;
constexpr operator Type() const { return Value; }
constexpr Type operator()() const { return Value; }
};
template <bool InValue>
using TBoolConstant = TConstant<bool, InValue>;
template <int32 InValue>
using TIntegralConstant = TConstant<int32, InValue>;
using FTrue = TBoolConstant<true>;
using FFalse = TBoolConstant<false>;
template <typename... Types>
struct TAnd;
template <typename LHS, typename... RHS>
struct TAnd<LHS, RHS...> : TBoolConstant<LHS::Value&& TAnd<RHS...>::Value> { };
template <>
struct TAnd<> : FTrue { };
template <typename... Types>
struct TOr;
template <typename LHS, typename... RHS>
struct TOr<LHS, RHS...> : TBoolConstant<LHS::Value || TOr<RHS...>::Value> { };
template <>
struct TOr<> : FFalse { };
template <typename Type>
struct TNot : TBoolConstant<!Type::Value> { };
NAMESPACE_END(TypeTraits)
NAMESPACE_MODULE_END(Utility)
NAMESPACE_MODULE_END(Redcraft)
NAMESPACE_REDCRAFT_END

44
Redcraft.Utility/Source/Public/TypeTraits/PrimaryType.h Normal file
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#pragma once
#include "CoreTypes.h"
#include "TypeTraits/HelperClasses.h"
#include <type_traits>
NAMESPACE_REDCRAFT_BEGIN
NAMESPACE_MODULE_BEGIN(Redcraft)
NAMESPACE_MODULE_BEGIN(Utility)
NAMESPACE_BEGIN(TypeTraits)
template <typename T> struct TIsVoid : TBoolConstant<NAMESPACE_STD::is_void_v<T>> { };
template <typename T> struct TIsNullPointer : TBoolConstant<NAMESPACE_STD::is_null_pointer_v<T>> { };
template <typename T> struct TIsIntegral : TBoolConstant<NAMESPACE_STD::is_integral_v<T>> { };
template <typename T> struct TIsFloatingPoint : TBoolConstant<NAMESPACE_STD::is_floating_point_v<T>> { };
template <typename T> struct TIsArray : TBoolConstant<NAMESPACE_STD::is_array_v<T>> { };
template <typename T> struct TIsPointer : TBoolConstant<NAMESPACE_STD::is_pointer_v<T>> { };
template <typename T> struct TIsLValueReference : TBoolConstant<NAMESPACE_STD::is_lvalue_reference_v<T>> { };
template <typename T> struct TIsRValueReference : TBoolConstant<NAMESPACE_STD::is_rvalue_reference_v<T>> { };
template <typename T> struct TIsMemberObjectPointer : TBoolConstant<NAMESPACE_STD::is_member_object_pointer_v<T>> { };
template <typename T> struct TIsMemberFunctionPointer : TBoolConstant<NAMESPACE_STD::is_member_function_pointer_v<T>> { };
template <typename T> struct TIsEnum : TBoolConstant<NAMESPACE_STD::is_enum_v<T>> { };
template <typename T> struct TIsUnion : TBoolConstant<NAMESPACE_STD::is_union_v<T>> { };
template <typename T> struct TIsClass : TBoolConstant<NAMESPACE_STD::is_class_v<T>> { };
template <typename T> struct TIsFunction : TBoolConstant<NAMESPACE_STD::is_function_v<T>> { };
NAMESPACE_PRIVATE_BEGIN
static char(&Resolve(int))[2];
static char Resolve(...);
template <typename T>
struct TIsEnumConvertibleToInt : TBoolConstant<sizeof(Resolve(T())) - 1> { };
NAMESPACE_PRIVATE_END
template <typename T>
struct TIsEnumClass : TBoolConstant<TAnd<TIsEnum<T>, TNot<NAMESPACE_PRIVATE::TIsEnumConvertibleToInt<T>>>::Value> { };
NAMESPACE_END(TypeTraits)
NAMESPACE_MODULE_END(Utility)
NAMESPACE_MODULE_END(Redcraft)
NAMESPACE_REDCRAFT_END