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feat(templates): add Invoke function and corresponding peripheral tools

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This commit is contained in:
_Redstone_c_
2022-02-04 21:11:05 +08:00
parent b0c170f803
commit 63fdd34789
9 changed files with 219 additions and 16 deletions
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9
Redcraft.Utility/Source/Private/Testing/ConceptsTesting.cpp
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@@ -183,6 +183,15 @@ void TestConcepts()
always_check((CSwappableWith<int32&, int32&>));
// Invocable.h
always_check((CInvocable <decltype([]( ) -> void { }) >));
always_check((CRegularInvocable <decltype([](int32 A ) -> int32 { return A; }), int32 >));
always_check((CPredicate <decltype([](int32 A, int32 B, int32 C) -> bool { return (A + B + C) == 0; }), int32, int32, int32 >));
always_check((CRelation <decltype([](int32 A, int32 B ) -> bool { return (A ^ B) == 0; }), int32, int32 >));
always_check((CEquivalenceRelation<decltype([](int32 A, int32 B ) -> bool { return A == B; }), int32, int32 >));
always_check((CStrictWeakOrder <decltype([](int32 A, int32 B ) -> bool { return A < B; }), int32, int32 >));
}
NAMESPACE_MODULE_END(Utility)

49
Redcraft.Utility/Source/Private/Testing/TemplatesTesting.cpp Normal file
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@@ -0,0 +1,49 @@
#include "Testing/TemplatesTesting.h"
#include "Misc/AssertionMacros.h"
#include "Templates/Templates.h"
NAMESPACE_REDCRAFT_BEGIN
NAMESPACE_MODULE_BEGIN(Redcraft)
NAMESPACE_MODULE_BEGIN(Utility)
void TestTemplates()
{
TestInvoke();
}
NAMESPACE_UNNAMED_BEGIN
int32 TestFunctionA(int32 A, int32 B, int32 C)
{
return A + B + C;
}
struct FTestStructA
{
int32 Num;
FTestStructA(int32 InNum) : Num(InNum) { }
int32 Add(int32 A) const { return Num + A; }
};
NAMESPACE_UNNAMED_END
void TestInvoke()
{
Invoke([=]() { });
FTestStructA TempA(123);
always_check(Invoke(TestFunctionA, 1, 2, 3) == 6);
always_check(Invoke(&FTestStructA::Add, TempA, 1) == 124);
always_check(Invoke(&FTestStructA::Add, &TempA, 1) == 124);
int32 TempB = Invoke(&FTestStructA::Num, &TempA);
int32 TempC = Invoke(&FTestStructA::Num, TempA);
always_check(TempB == 123);
always_check(TempC == 123);
int64 TempD = InvokeResult<int64>(&FTestStructA::Num, &TempA);
int64 TempE = InvokeResult<int64>(&FTestStructA::Num, TempA);
always_check(TempD == 123);
always_check(TempE == 123);
}
NAMESPACE_MODULE_END(Utility)
NAMESPACE_MODULE_END(Redcraft)
NAMESPACE_REDCRAFT_END

15
Redcraft.Utility/Source/Private/Testing/TypeTraitsTesting.cpp
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@@ -313,11 +313,16 @@ void TestTypeTraits()
always_check(!(TIsConvertible<FTestStructE*, FTestStructH*>::Value));
always_check((TIsConvertible<FTestStructW, FTestStructV>::Value));
always_check((TIsInvocable<void, int32()>::Value));
always_check((TIsInvocable<int32, int32()>::Value));
always_check((TIsInvocable<int32, int32(int32), int32>::Value));
always_check(!(TIsInvocable<int32, int32(int32), FTestStructA>::Value));
always_check(!(TIsInvocable<FTestStructA, int32(int32), int32>::Value));
always_check((TIsInvocable<int32()>::Value));
always_check((TIsInvocable<int32(int32), int32>::Value));
always_check(!(TIsInvocable<int32(int32), FTestStructA>::Value));
always_check((TIsInvocable<int32(int32), int32>::Value));
always_check((TIsInvocableResult<void, int32()>::Value));
always_check((TIsInvocableResult<int32, int32()>::Value));
always_check((TIsInvocableResult<int32, int32(int32), int32>::Value));
always_check(!(TIsInvocableResult<int32, int32(int32), FTestStructA>::Value));
always_check(!(TIsInvocableResult<FTestStructA, int32(int32), int32>::Value));
always_check((TIsSame<int32, TRemoveConst<int32>::Type>::Value));
always_check(!(TIsSame<int32, TRemoveConst<int32*>::Type>::Value));

8
Redcraft.Utility/Source/Public/Concepts/Concepts.h
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@@ -4,6 +4,7 @@
#include "Concepts/Same.h"
#include "Concepts/Derived.h"
#include "Concepts/Objects.h"
#include "Concepts/Invocable.h"
#include "Concepts/Swappable.h"
#include "Concepts/Assignable.h"
#include "Concepts/Comparable.h"
@@ -12,10 +13,3 @@
#include "Concepts/Destructible.h"
#include "Concepts/Constructible.h"
#include "Concepts/BooleanTestable.h"
//template <typename F, typename... Args> concept CInvocable; // Prerequisites: Invoke, Forward
//template <typename F, typename... Args> concept CRegularInvocable; // Prerequisites: Invoke, Forward
//template <typename F, typename... Args> concept CPredicate; // Prerequisites: CBooleanTestable, CRegularInvocable
//template <typename F, typename T, typename U> concept CRelation; // Prerequisites: CPredicate
//template <typename F, typename T, typename U> concept CEquivalenceRelation // Prerequisites: CRelation
//template <typename F, typename T, typename U> concept CStrictWeakOrder // Prerequisites: CRelation

32
Redcraft.Utility/Source/Public/Concepts/Invocable.h Normal file
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@@ -0,0 +1,32 @@
#pragma once
#include "CoreTypes.h"
#include "TypeTraits/TypeTraits.h"
NAMESPACE_REDCRAFT_BEGIN
NAMESPACE_MODULE_BEGIN(Redcraft)
NAMESPACE_MODULE_BEGIN(Utility)
template <typename F, typename... Types>
concept CInvocable = requires(F&& Func, Types&&... Args) { Invoke(Forward<F>(Func), Forward<Types>(Args)...); };
template <typename F, typename... Types>
concept CRegularInvocable = CInvocable<F, Types...>;
template <typename F, typename... Types>
concept CPredicate = CRegularInvocable<F, Types...> && CBooleanTestable<typename TInvokeResult<F, Types...>::Type>;
template <typename R, typename T, typename U>
concept CRelation =
CPredicate<R, T, T> && CPredicate<R, U, U> &&
CPredicate<R, T, U> && CPredicate<R, U, T>;
template <typename R, typename T, typename U>
concept CEquivalenceRelation = CRelation<R, T, U>;
template <typename R, typename T, typename U>
concept CStrictWeakOrder = CRelation<R, T, U>;
NAMESPACE_MODULE_END(Utility)
NAMESPACE_MODULE_END(Redcraft)
NAMESPACE_REDCRAFT_END

98
Redcraft.Utility/Source/Public/Templates/Invoke.h Normal file
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@@ -0,0 +1,98 @@
#pragma once
#include "CoreTypes.h"
#include "TypeTraits/Miscellaneous.h"
NAMESPACE_REDCRAFT_BEGIN
NAMESPACE_MODULE_BEGIN(Redcraft)
NAMESPACE_MODULE_BEGIN(Utility)
NAMESPACE_PRIVATE_BEGIN
struct InvokeFunction
{
template <typename F, typename... Types>
static auto Invoke(F&& Object, Types&&... Args)
{
return Object(Forward<Types>(Args)...);
}
};
struct InvokeMemberFunction
{
template <typename F, typename ObjectType, typename... Types>
static auto Invoke(F&& Func, ObjectType&& Object, Types&&... Args) ->
decltype((Object->*Func)(Forward<Types>(Args)...))
{
return (Object->*Func)(Forward<Types>(Args)...);
}
template <typename F, typename ObjectType, typename... Types>
static auto Invoke(F&& Func, ObjectType&& Object, Types&&... Args) ->
decltype((Object.*Func)(Forward<Types>(Args)...))
{
return (Object.*Func)(Forward<Types>(Args)...);
}
};
struct InvokeMemberObject
{
template <typename F, typename ObjectType>
static auto Invoke(F&& Func, ObjectType&& Object) ->
decltype(Object->*Func)
{
return (Object->*Func);
}
template <typename F, typename ObjectType>
static auto Invoke(F&& Func, ObjectType&& Object) ->
decltype(Object.*Func)
{
return (Object.*Func);
}
};
template <typename F,
typename T,
typename Decayed = typename TDecay<F>::Type,
bool IsMemberFunction = TIsMemberFunctionPointer<Decayed>::Value,
bool IsMemberObject = TIsMemberObjectPointer<Decayed>::Value>
struct InvokeMember;
template <typename F, typename T, typename Decayed>
struct InvokeMember<F, T, Decayed, true, false> : InvokeMemberFunction { };
template <typename F, typename T, typename Decayed>
struct InvokeMember<F, T, Decayed, false, true> : InvokeMemberObject { };
template <typename F, typename T, typename Decayed>
struct InvokeMember<F, T, Decayed, false, false> : InvokeFunction { };
template <typename F, typename... Types>
struct InvokeImpl;
template <typename F>
struct InvokeImpl<F> : InvokeFunction { };
template <typename F, typename T, typename... Types>
struct InvokeImpl<F, T, Types...> : InvokeMember<F, T> { };
NAMESPACE_PRIVATE_END
template <typename F, typename... Types> requires TIsInvocable<F, Types...>::Value
constexpr auto Invoke(F&& Func, Types&&... Args)
{
return NAMESPACE_PRIVATE::InvokeImpl<F, Types...>::Invoke(Forward<F>(Func), Forward<Types>(Args)...);
}
template <typename R, typename F, typename... Types> requires TIsInvocableResult<R, F, Types...>::Value
constexpr R InvokeResult(F&& Func, Types&&... Args)
{
if constexpr (TIsVoid<R>::Value) Invoke(Forward<F>(Func), Forward<Types>(Args)...);
else return Invoke(Forward<F>(Func), Forward<Types>(Args)...);
}
NAMESPACE_MODULE_END(Utility)
NAMESPACE_MODULE_END(Redcraft)
NAMESPACE_REDCRAFT_END

1
Redcraft.Utility/Source/Public/Templates/Templates.h
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@@ -4,3 +4,4 @@
#include "Templates/Utility.h"
#include "Templates/Container.h"
#include "Templates/Noncopyable.h"
#include "Templates/Invoke.h"

14
Redcraft.Utility/Source/Public/Testing/TemplatesTesting.h Normal file
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@@ -0,0 +1,14 @@
#pragma once
#include "CoreTypes.h"
NAMESPACE_REDCRAFT_BEGIN
NAMESPACE_MODULE_BEGIN(Redcraft)
NAMESPACE_MODULE_BEGIN(Utility)
void REDCRAFTUTILITY_API TestTemplates();
void REDCRAFTUTILITY_API TestInvoke();
NAMESPACE_MODULE_END(Utility)
NAMESPACE_MODULE_END(Redcraft)
NAMESPACE_REDCRAFT_END

9
Redcraft.Utility/Source/Public/TypeTraits/Miscellaneous.h
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@@ -28,10 +28,11 @@ NAMESPACE_PRIVATE_END
template <typename T> struct TRank : TConstant<size_t, NAMESPACE_STD::rank_v<T>> { };
template <typename T, size_t I = 0> struct TExtent : TConstant<size_t, NAMESPACE_STD::extent_v<T, I>> { };
template <typename T, typename U> struct TIsSame : TBoolConstant<NAMESPACE_STD::is_same_v<T, U>> { };
template <typename T, typename U> struct TIsBaseOf : TBoolConstant<NAMESPACE_STD::is_base_of_v<T, U>> { };
template <typename T, typename U> struct TIsConvertible : TBoolConstant<NAMESPACE_STD::is_convertible_v<T, U>> { };
template <typename R, typename F, typename... Args> struct TIsInvocable : TBoolConstant<NAMESPACE_STD::is_invocable_r_v<R, F, Args...>> { };
template <typename T, typename U> struct TIsSame : TBoolConstant<NAMESPACE_STD::is_same_v<T, U>> { };
template <typename T, typename U> struct TIsBaseOf : TBoolConstant<NAMESPACE_STD::is_base_of_v<T, U>> { };
template <typename T, typename U> struct TIsConvertible : TBoolConstant<NAMESPACE_STD::is_convertible_v<T, U>> { };
template <typename F, typename... Args> struct TIsInvocable : TBoolConstant<NAMESPACE_STD::is_invocable_v<F, Args...>> { };
template <typename R, typename F, typename... Args> struct TIsInvocableResult : TBoolConstant<NAMESPACE_STD::is_invocable_r_v<R, F, Args...>> { }; // FIXME: The result for char(&())[2] is wrong on MSVC
template <typename T> struct TRemoveConst { using Type = NAMESPACE_STD::remove_const_t<T>; };
template <typename T> struct TRemoveVolatile { using Type = NAMESPACE_STD::remove_volatile_t<T>; };