deallocate_one.h

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#pragma once
 
#include "di/container/allocator/allocate.h"
#include "di/container/allocator/allocation_result.h"
#include "di/container/allocator/allocator.h"
#include "di/container/allocator/std_allocator.h"
#include "di/meta/vocab.h"
#include "di/util/voidify.h"
#include "di/vocab/expected/as_fallible.h"
#include "di/vocab/expected/try_infallible.h"
 
namespace di::container {
namespace detail {
    template<typename T>
    struct DeallocateOneFunction {
        constexpr void operator()(concepts::Allocator auto& allocator, T* pointer) const {
            if consteval {
                return std::allocator<T>().deallocate(pointer, 1);
            }
 
            return di::deallocate(allocator, di::voidify(pointer), sizeof(T), alignof(T));
        }
    };
}
 
template<typename T>
constexpr inline auto deallocate_one = detail::DeallocateOneFunction<T> {};
}
 
namespace di {
using container::deallocate_one;
}