#include "macros.hh"

namespace error {
	struct Error {
		DEFINE_INTERFACE(Error);
		constexpr Error() noexcept = default;

		constexpr operator std::string_view() const noexcept { return message(); }	

		constexpr virtual std::string_view message() const noexcept =0;
		constexpr virtual Error const* inner() const noexcept { return nullptr; }

		// TODO: `borrow::Borrow<typename T, where::deref_to<T> (using std::pointer_traits<>) PtrType = T*>` (borrow.hh): essentially specialised `std::variant<T, PtrType>`
		constexpr virtual borrow::Borrow<const Report> report() const& { return borrow::Borrow{ nullptr }; }
//		constexpr virtual borrow::Borrow<const Report> report() & { return borrow::Borrow{ nullptr }; }
		constexpr virtual borrow::Borrow<Report> report() & { return borrow::Borrow{ nullptr }; }
		constexpr virtual borrow::Borrow<Report>:into_owned_t report() && { return borrow::Borrow{ nullptr }.into_owned(); } // <- Will initialise with `into_owned() &&` member function, which `std::move()`s the value from the pointer instead of just copying the pointer. XXX: How do we actually want this borrowing interface to behave, huh?
	};
}