pointers.h

/*****************************************************************************
 * VCLib                                                                     *
 * Visual Computing Library                                                  *
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 * Copyright(C) 2021-2025                                                    *
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the              *
 * Mozilla Public License Version 2.0                                        *
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 ****************************************************************************/
 
#ifndef VCL_TYPES_POINTERS_H
#define VCL_TYPES_POINTERS_H
 
#include <type_traits>
#include <utility>
 
namespace vcl {
 
template<typename T>
using RemovePtr = std::remove_pointer_t<T>;
 
template<typename T>
using RemoveRef = std::remove_reference_t<T>;
 
template<typename T>
using RemoveCVRefAndPointer = std::remove_cvref_t<RemovePtr<T>>;
 
template<typename T>
using RemoveConstFromPointer = std::conditional_t<
    std::is_pointer_v<T>,
    std::add_pointer_t<std::remove_cv_t<RemovePtr<T>>>,
    T>;
 
template<typename T>
auto& dereferencePtr(T&& obj)
{
    if constexpr (std::is_pointer_v<RemoveRef<T>>) {
        return *obj;
    }
    else {
        return std::forward<T>(obj);
    }
}
 
template<typename T>
auto addressOfObj(T& obj)
{
    if constexpr (std::is_pointer_v<RemoveRef<T>>) {
        return obj;
    }
    else {
        return &obj;
    }
}
 
} // namespace vcl
 
#endif // VCL_TYPES_POINTERS_H