mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-25 09:00:22 +00:00
597 lines
16 KiB
C++
597 lines
16 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
|
|
* Copyright (c) 2021, Daniel Bertalan <dani@danielbertalan.dev>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
namespace AK::Detail {
|
|
|
|
template<bool B, class T = void>
|
|
struct EnableIf {
|
|
};
|
|
|
|
template<class T>
|
|
struct EnableIf<true, T> {
|
|
using Type = T;
|
|
};
|
|
|
|
template<class T, T v>
|
|
struct IntegralConstant {
|
|
static constexpr T value = v;
|
|
using ValueType = T;
|
|
using Type = IntegralConstant;
|
|
constexpr operator ValueType() const { return value; }
|
|
constexpr ValueType operator()() const { return value; }
|
|
};
|
|
|
|
using FalseType = IntegralConstant<bool, false>;
|
|
using TrueType = IntegralConstant<bool, true>;
|
|
|
|
template<class T>
|
|
using AddConst = const T;
|
|
|
|
template<class T>
|
|
struct __RemoveConst {
|
|
using Type = T;
|
|
};
|
|
template<class T>
|
|
struct __RemoveConst<const T> {
|
|
using Type = T;
|
|
};
|
|
template<class T>
|
|
using RemoveConst = typename __RemoveConst<T>::Type;
|
|
|
|
template<class T>
|
|
struct __RemoveVolatile {
|
|
using Type = T;
|
|
};
|
|
|
|
template<class T>
|
|
struct __RemoveVolatile<volatile T> {
|
|
using Type = T;
|
|
};
|
|
|
|
template<typename T>
|
|
using RemoveVolatile = typename __RemoveVolatile<T>::Type;
|
|
|
|
template<class T>
|
|
using RemoveCV = RemoveVolatile<RemoveConst<T>>;
|
|
|
|
template<typename...>
|
|
using VoidType = void;
|
|
|
|
template<class T>
|
|
inline constexpr bool IsLvalueReference = false;
|
|
|
|
template<class T>
|
|
inline constexpr bool IsLvalueReference<T&> = true;
|
|
|
|
template<class T>
|
|
inline constexpr bool __IsPointerHelper = false;
|
|
|
|
template<class T>
|
|
inline constexpr bool __IsPointerHelper<T*> = true;
|
|
|
|
template<class T>
|
|
inline constexpr bool IsPointer = __IsPointerHelper<RemoveCV<T>>;
|
|
|
|
template<class>
|
|
inline constexpr bool IsFunction = false;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...)> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...)> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) const> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) const> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) volatile> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) volatile> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) const volatile> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) const volatile> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...)&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...)&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) const&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) const&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) volatile&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) volatile&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) const volatile&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) const volatile&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) &&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) &&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) const&&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) const&&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) volatile&&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) volatile&&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args...) const volatile&&> = true;
|
|
template<class Ret, class... Args>
|
|
inline constexpr bool IsFunction<Ret(Args..., ...) const volatile&&> = true;
|
|
|
|
template<class T>
|
|
inline constexpr bool IsRvalueReference = false;
|
|
template<class T>
|
|
inline constexpr bool IsRvalueReference<T&&> = true;
|
|
|
|
template<class T>
|
|
struct __RemovePointer {
|
|
using Type = T;
|
|
};
|
|
template<class T>
|
|
struct __RemovePointer<T*> {
|
|
using Type = T;
|
|
};
|
|
template<class T>
|
|
struct __RemovePointer<T* const> {
|
|
using Type = T;
|
|
};
|
|
template<class T>
|
|
struct __RemovePointer<T* volatile> {
|
|
using Type = T;
|
|
};
|
|
template<class T>
|
|
struct __RemovePointer<T* const volatile> {
|
|
using Type = T;
|
|
};
|
|
template<typename T>
|
|
using RemovePointer = typename __RemovePointer<T>::Type;
|
|
|
|
template<typename T, typename U>
|
|
inline constexpr bool IsSame = false;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsSame<T, T> = true;
|
|
|
|
template<bool condition, class TrueType, class FalseType>
|
|
struct __Conditional {
|
|
using Type = TrueType;
|
|
};
|
|
|
|
template<class TrueType, class FalseType>
|
|
struct __Conditional<false, TrueType, FalseType> {
|
|
using Type = FalseType;
|
|
};
|
|
|
|
template<bool condition, class TrueType, class FalseType>
|
|
using Conditional = typename __Conditional<condition, TrueType, FalseType>::Type;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsNullPointer = IsSame<decltype(nullptr), RemoveCV<T>>;
|
|
|
|
template<typename T>
|
|
struct __RemoveReference {
|
|
using Type = T;
|
|
};
|
|
template<class T>
|
|
struct __RemoveReference<T&> {
|
|
using Type = T;
|
|
};
|
|
template<class T>
|
|
struct __RemoveReference<T&&> {
|
|
using Type = T;
|
|
};
|
|
|
|
template<typename T>
|
|
using RemoveReference = typename __RemoveReference<T>::Type;
|
|
|
|
template<typename T>
|
|
using RemoveCVReference = RemoveCV<RemoveReference<T>>;
|
|
|
|
template<typename T>
|
|
struct __MakeUnsigned {
|
|
using Type = void;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<signed char> {
|
|
using Type = unsigned char;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<short> {
|
|
using Type = unsigned short;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<int> {
|
|
using Type = unsigned int;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<long> {
|
|
using Type = unsigned long;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<long long> {
|
|
using Type = unsigned long long;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<unsigned char> {
|
|
using Type = unsigned char;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<unsigned short> {
|
|
using Type = unsigned short;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<unsigned int> {
|
|
using Type = unsigned int;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<unsigned long> {
|
|
using Type = unsigned long;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<unsigned long long> {
|
|
using Type = unsigned long long;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<char> {
|
|
using Type = unsigned char;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<char8_t> {
|
|
using Type = char8_t;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<char16_t> {
|
|
using Type = char16_t;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<char32_t> {
|
|
using Type = char32_t;
|
|
};
|
|
template<>
|
|
struct __MakeUnsigned<bool> {
|
|
using Type = bool;
|
|
};
|
|
|
|
template<typename T>
|
|
using MakeUnsigned = typename __MakeUnsigned<T>::Type;
|
|
|
|
template<typename T>
|
|
struct __MakeSigned {
|
|
using Type = void;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<signed char> {
|
|
using Type = signed char;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<short> {
|
|
using Type = short;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<int> {
|
|
using Type = int;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<long> {
|
|
using Type = long;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<long long> {
|
|
using Type = long long;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<unsigned char> {
|
|
using Type = char;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<unsigned short> {
|
|
using Type = short;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<unsigned int> {
|
|
using Type = int;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<unsigned long> {
|
|
using Type = long;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<unsigned long long> {
|
|
using Type = long long;
|
|
};
|
|
template<>
|
|
struct __MakeSigned<char> {
|
|
using Type = char;
|
|
};
|
|
|
|
template<typename T>
|
|
using MakeSigned = typename __MakeSigned<T>::Type;
|
|
|
|
template<typename T>
|
|
auto declval() -> T;
|
|
|
|
template<typename...>
|
|
struct __CommonType;
|
|
|
|
template<typename T>
|
|
struct __CommonType<T> {
|
|
using Type = T;
|
|
};
|
|
|
|
template<typename T1, typename T2>
|
|
struct __CommonType<T1, T2> {
|
|
using Type = decltype(true ? declval<T1>() : declval<T2>());
|
|
};
|
|
|
|
template<typename T1, typename T2, typename... Ts>
|
|
struct __CommonType<T1, T2, Ts...> {
|
|
using Type = typename __CommonType<typename __CommonType<T1, T2>::Type, Ts...>::Type;
|
|
};
|
|
|
|
template<typename... Ts>
|
|
using CommonType = typename __CommonType<Ts...>::Type;
|
|
|
|
template<class T>
|
|
inline constexpr bool IsVoid = IsSame<void, RemoveCV<T>>;
|
|
|
|
template<class T>
|
|
inline constexpr bool IsConst = false;
|
|
|
|
template<class T>
|
|
inline constexpr bool IsConst<const T> = true;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsEnum = __is_enum(T);
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsUnion = __is_union(T);
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsClass = __is_class(T);
|
|
|
|
template<typename Base, typename Derived>
|
|
inline constexpr bool IsBaseOf = __is_base_of(Base, Derived);
|
|
|
|
template<typename T>
|
|
inline constexpr bool __IsIntegral = false;
|
|
|
|
template<>
|
|
inline constexpr bool __IsIntegral<bool> = true;
|
|
template<>
|
|
inline constexpr bool __IsIntegral<unsigned char> = true;
|
|
template<>
|
|
inline constexpr bool __IsIntegral<char8_t> = true;
|
|
template<>
|
|
inline constexpr bool __IsIntegral<char16_t> = true;
|
|
template<>
|
|
inline constexpr bool __IsIntegral<char32_t> = true;
|
|
template<>
|
|
inline constexpr bool __IsIntegral<unsigned short> = true;
|
|
template<>
|
|
inline constexpr bool __IsIntegral<unsigned int> = true;
|
|
template<>
|
|
inline constexpr bool __IsIntegral<unsigned long> = true;
|
|
template<>
|
|
inline constexpr bool __IsIntegral<unsigned long long> = true;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsIntegral = __IsIntegral<MakeUnsigned<RemoveCV<T>>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool __IsFloatingPoint = false;
|
|
template<>
|
|
inline constexpr bool __IsFloatingPoint<float> = true;
|
|
template<>
|
|
inline constexpr bool __IsFloatingPoint<double> = true;
|
|
template<>
|
|
inline constexpr bool __IsFloatingPoint<long double> = true;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsFloatingPoint = __IsFloatingPoint<RemoveCV<T>>;
|
|
|
|
template<typename ReferenceType, typename T>
|
|
using CopyConst = Conditional<IsConst<ReferenceType>, AddConst<T>, RemoveConst<T>>;
|
|
|
|
template<typename... Ts>
|
|
using Void = void;
|
|
|
|
template<typename... _Ignored>
|
|
constexpr auto DependentFalse = false;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsSigned = IsSame<T, MakeSigned<T>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsUnsigned = IsSame<T, MakeUnsigned<T>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsArithmetic = IsIntegral<T> || IsFloatingPoint<T>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsFundamental = IsArithmetic<T> || IsVoid<T> || IsNullPointer<T>;
|
|
|
|
template<typename T, T... Ts>
|
|
struct IntegerSequence {
|
|
using Type = T;
|
|
static constexpr unsigned size() noexcept { return sizeof...(Ts); };
|
|
};
|
|
|
|
template<unsigned... Indices>
|
|
using IndexSequence = IntegerSequence<unsigned, Indices...>;
|
|
|
|
template<typename T, T N, T... Ts>
|
|
auto make_integer_sequence_impl()
|
|
{
|
|
if constexpr (N == 0)
|
|
return IntegerSequence<T, Ts...> {};
|
|
else
|
|
return make_integer_sequence_impl<T, N - 1, N - 1, Ts...>();
|
|
}
|
|
|
|
template<typename T, T N>
|
|
using MakeIntegerSequence = decltype(make_integer_sequence_impl<T, N>());
|
|
|
|
template<unsigned N>
|
|
using MakeIndexSequence = MakeIntegerSequence<unsigned, N>;
|
|
|
|
template<typename T>
|
|
struct __IdentityType {
|
|
using Type = T;
|
|
};
|
|
|
|
template<typename T>
|
|
using IdentityType = typename __IdentityType<T>::Type;
|
|
|
|
template<typename T, typename = void>
|
|
struct __AddReference {
|
|
using LvalueType = T;
|
|
using TvalueType = T;
|
|
};
|
|
|
|
template<typename T>
|
|
struct __AddReference<T, VoidType<T&>> {
|
|
using LvalueType = T&;
|
|
using RvalueType = T&&;
|
|
};
|
|
|
|
template<typename T>
|
|
using AddLvalueReference = typename __AddReference<T>::LvalueType;
|
|
|
|
template<typename T>
|
|
using AddRvalueReference = typename __AddReference<T>::RvalueType;
|
|
|
|
template<class T>
|
|
requires(IsEnum<T>) using UnderlyingType = __underlying_type(T);
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsTrivial = __is_trivial(T);
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsTriviallyCopyable = __is_trivially_copyable(T);
|
|
|
|
template<typename T, typename... Args>
|
|
inline constexpr bool IsCallableWithArguments = requires(T t) { t(declval<Args>()...); };
|
|
|
|
template<typename T, typename... Args>
|
|
inline constexpr bool IsConstructible = requires { ::new T(declval<Args>()...); };
|
|
|
|
template<typename T, typename... Args>
|
|
inline constexpr bool IsTriviallyConstructible = __is_trivially_constructible(T, Args...);
|
|
|
|
template<typename From, typename To>
|
|
inline constexpr bool IsConvertible = requires { declval<void (*)(To)>()(declval<From>()); };
|
|
|
|
template<typename T, typename U>
|
|
inline constexpr bool IsAssignable = requires { declval<T>() = declval<U>(); };
|
|
|
|
template<typename T, typename U>
|
|
inline constexpr bool IsTriviallyAssignable = __is_trivially_assignable(T, U);
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsDestructible = requires { declval<T>().~T(); };
|
|
|
|
template<typename T>
|
|
#if defined(__clang__)
|
|
inline constexpr bool IsTriviallyDestructible = __is_trivially_destructible(T);
|
|
#else
|
|
inline constexpr bool IsTriviallyDestructible = __has_trivial_destructor(T) && IsDestructible<T>;
|
|
#endif
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsCopyConstructible = IsConstructible<T, AddLvalueReference<AddConst<T>>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsTriviallyCopyConstructible = IsTriviallyConstructible<T, AddLvalueReference<AddConst<T>>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsCopyAssignable = IsAssignable<AddLvalueReference<T>, AddLvalueReference<AddConst<T>>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsTriviallyCopyAssignable = IsTriviallyAssignable<AddLvalueReference<T>, AddLvalueReference<AddConst<T>>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsMoveConstructible = IsConstructible<T, AddRvalueReference<T>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsTriviallyMoveConstructible = IsTriviallyConstructible<T, AddRvalueReference<T>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsMoveAssignable = IsAssignable<AddLvalueReference<T>, AddRvalueReference<T>>;
|
|
|
|
template<typename T>
|
|
inline constexpr bool IsTriviallyMoveAssignable = IsTriviallyAssignable<AddLvalueReference<T>, AddRvalueReference<T>>;
|
|
}
|
|
using AK::Detail::AddConst;
|
|
using AK::Detail::AddLvalueReference;
|
|
using AK::Detail::AddRvalueReference;
|
|
using AK::Detail::CommonType;
|
|
using AK::Detail::Conditional;
|
|
using AK::Detail::CopyConst;
|
|
using AK::Detail::declval;
|
|
using AK::Detail::DependentFalse;
|
|
using AK::Detail::EnableIf;
|
|
using AK::Detail::FalseType;
|
|
using AK::Detail::IdentityType;
|
|
using AK::Detail::IndexSequence;
|
|
using AK::Detail::IntegerSequence;
|
|
using AK::Detail::IsArithmetic;
|
|
using AK::Detail::IsAssignable;
|
|
using AK::Detail::IsBaseOf;
|
|
using AK::Detail::IsCallableWithArguments;
|
|
using AK::Detail::IsClass;
|
|
using AK::Detail::IsConst;
|
|
using AK::Detail::IsConstructible;
|
|
using AK::Detail::IsConvertible;
|
|
using AK::Detail::IsCopyAssignable;
|
|
using AK::Detail::IsCopyConstructible;
|
|
using AK::Detail::IsDestructible;
|
|
using AK::Detail::IsEnum;
|
|
using AK::Detail::IsFloatingPoint;
|
|
using AK::Detail::IsFunction;
|
|
using AK::Detail::IsFundamental;
|
|
using AK::Detail::IsIntegral;
|
|
using AK::Detail::IsLvalueReference;
|
|
using AK::Detail::IsMoveAssignable;
|
|
using AK::Detail::IsMoveConstructible;
|
|
using AK::Detail::IsNullPointer;
|
|
using AK::Detail::IsPointer;
|
|
using AK::Detail::IsRvalueReference;
|
|
using AK::Detail::IsSame;
|
|
using AK::Detail::IsSigned;
|
|
using AK::Detail::IsTrivial;
|
|
using AK::Detail::IsTriviallyAssignable;
|
|
using AK::Detail::IsTriviallyConstructible;
|
|
using AK::Detail::IsTriviallyCopyable;
|
|
using AK::Detail::IsTriviallyCopyAssignable;
|
|
using AK::Detail::IsTriviallyCopyConstructible;
|
|
using AK::Detail::IsTriviallyDestructible;
|
|
using AK::Detail::IsTriviallyMoveAssignable;
|
|
using AK::Detail::IsTriviallyMoveConstructible;
|
|
using AK::Detail::IsUnion;
|
|
using AK::Detail::IsUnsigned;
|
|
using AK::Detail::IsVoid;
|
|
using AK::Detail::MakeIndexSequence;
|
|
using AK::Detail::MakeIntegerSequence;
|
|
using AK::Detail::MakeSigned;
|
|
using AK::Detail::MakeUnsigned;
|
|
using AK::Detail::RemoveConst;
|
|
using AK::Detail::RemoveCV;
|
|
using AK::Detail::RemoveCVReference;
|
|
using AK::Detail::RemovePointer;
|
|
using AK::Detail::RemoveReference;
|
|
using AK::Detail::RemoveVolatile;
|
|
using AK::Detail::TrueType;
|
|
using AK::Detail::UnderlyingType;
|
|
using AK::Detail::Void;
|