#ifndef EAX_FX_SLOT_INDEX_INCLUDED
#define EAX_FX_SLOT_INDEX_INCLUDED


#include <cstddef>

#include "aloptional.h"
#include "eax_api.h"


using EaxFxSlotIndexValue = std::size_t;


class EaxFxSlotIndex : public al::optional<EaxFxSlotIndexValue>
{
public:
    using al::optional<EaxFxSlotIndexValue>::optional;

    EaxFxSlotIndex& operator=(const EaxFxSlotIndexValue &value) { set(value); return *this; }
    EaxFxSlotIndex& operator=(const GUID &guid) { set(guid); return *this; }

    void set(EaxFxSlotIndexValue index);
    void set(const GUID& guid);

private:
    [[noreturn]]
    static void fail(const char *message);
}; // EaxFxSlotIndex

bool operator==(
    const EaxFxSlotIndex& lhs,
    const EaxFxSlotIndex& rhs) noexcept;

bool operator!=(
    const EaxFxSlotIndex& lhs,
    const EaxFxSlotIndex& rhs) noexcept;

#endif // !EAX_FX_SLOT_INDEX_INCLUDED