memory.hpp

/*
    SPDX-License-Identifier: MIT
    Copyright © 2023 Amebis
*/
 
#pragma once
 
#include <memory>
 
namespace stdex
{
    template <class T>
    struct no_delete {
        constexpr no_delete() noexcept = default;
 
        template <class T2, std::enable_if_t<std::is_convertible_v<T2*, T*>, int> = 0>
        inline no_delete(const no_delete<T2>&) noexcept {}
 
        inline void operator()(T* p) const noexcept { p; }
    };
 
    template <class T>
    struct no_delete<T[]> {
        constexpr no_delete() noexcept = default;
 
        template <class _Uty, std::enable_if_t<std::is_convertible_v<_Uty(*)[], T(*)[]>, int> = 0>
        inline no_delete(const no_delete<_Uty[]>&) noexcept {}
 
        template <class _Uty, std::enable_if_t<std::is_convertible_v<_Uty(*)[], T(*)[]>, int> = 0>
        inline void operator()(_Uty* p) const noexcept { p; }
    };
 
    template <class T>
    inline std::shared_ptr<T> make_shared_no_delete(_In_ T* p)
    {
        return std::shared_ptr<T>(p, no_delete<T>{});
    }
}