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#ifndef OPENMW_COMPONENTS_MISC_META_H
#define OPENMW_COMPONENTS_MISC_META_H
#include <cstddef>
#include <tuple>
#include <type_traits>
namespace Misc
{
template <class T, class Tuple>
struct TupleHasType;
template <class T, class... Args>
struct TupleHasType<T, std::tuple<Args...>>
{
static constexpr bool value = (std::is_same_v<T, Args> || ...);
};
template <class T, class Tuple>
struct TupleTypeIndex;
template <class T, class... Types>
struct TupleTypeIndex<T, std::tuple<T, Types...>>
{
static constexpr std::size_t value = 0;
};
template <class T, class U, class... Types>
struct TupleTypeIndex<T, std::tuple<U, Types...>>
{
static constexpr std::size_t value = 1 + TupleTypeIndex<T, std::tuple<Types...>>::value;
};
}
#endif
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