basics.hpp

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// SPDX-License-Identifier: BSD-2-Clause
 
#ifndef pRC_CORE_BASIC_BASICS_H
#define pRC_CORE_BASIC_BASICS_H
 
#include <cstdint>
#include <functional>
#include <type_traits>
#include <utility>
 
#include <prc/std.hpp>
 
namespace pRC
{
    using std::declval;
    using std::forward;
    using std::get;
    using std::move;
    using std::swap;
    using std::tie;
 
    template<class... Ts>
    using Tuple = std::tuple<Ts...>;
 
    template<std::size_t I, class T>
    using TupleElement = std::tuple_element_t<I, T>;
 
    using Void = void;
    using Bool = bool;
 
    using Size = std::size_t;
    using Index = Size;
    using Seed = std::uint32_t;
 
    class Undefined;
 
    template<class T, T V>
    using Constant = std::integral_constant<T, V>;
 
    template<class T>
    using RemoveReference = std::remove_reference_t<T>;
 
    template<class T>
    using RemoveConst = std::remove_const_t<T>;
 
    template<class T>
    using RemoveConstReference = RemoveConst<RemoveReference<T>>;
 
    template<class T>
    using AddConst = std::add_const_t<T>;
 
    template<class... Ts>
    using Common = std::common_type_t<Ts...>;
 
    template<Bool B, class T, class F>
    using Conditional = std::conditional_t<B, T, F>;
 
    template<class F, class... Args>
    using ResultOf = std::invoke_result_t<F, Args...>;
 
    template<class T>
    using UnderlyingType = std::underlying_type_t<T>;
 
    template<class... Xs>
    static inline constexpr auto forwardAsTuple(Xs &&...args)
    {
        return Tuple<Xs &&...>(forward<Xs>(args)...);
    }
 
    template<class X>
    static inline constexpr AddConst<X> &asConst(X &a)
    {
        return a;
    }
 
    template<class X>
    static inline constexpr RemoveConst<X> asConst(X &&a)
    {
        return forward<X>(a);
    }
 
    template<class X>
    static inline constexpr RemoveConst<X> as(X &&a)
    {
        return forward<X>(a);
    }
}
#endif // pRC_CORE_BASIC_BASICS_H