mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
#ifndef SPROUT_TUPLE_TUPLE_COMPARISON_HPP
|
|
#define SPROUT_TUPLE_TUPLE_COMPARISON_HPP
|
|
|
|
#include <cstddef>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/tuple/tuple.hpp>
|
|
|
|
namespace sprout {
|
|
namespace tuples {
|
|
//
|
|
// operator==
|
|
// operator<
|
|
// operator!=
|
|
// operator>
|
|
// operator>=
|
|
// operator<=
|
|
//
|
|
namespace detail {
|
|
template<std::size_t CheckEqualSize, std::size_t I, std::size_t J, typename T, typename U>
|
|
struct tuple_compare;
|
|
template<std::size_t I, typename T, typename U>
|
|
struct tuple_compare<0, I, I, T, U> {
|
|
public:
|
|
static SPROUT_CONSTEXPR bool eq(T const&, U const&) {
|
|
return true;
|
|
}
|
|
static SPROUT_CONSTEXPR bool less(T const&, U const&) {
|
|
return false;
|
|
}
|
|
};
|
|
template<std::size_t I, std::size_t J, typename T, typename U>
|
|
struct tuple_compare<0, I, J, T, U> {
|
|
public:
|
|
static SPROUT_CONSTEXPR bool eq(T const& t, U const& u) {
|
|
return (sprout::tuples::get<I>(t) == sprout::tuples::get<I>(u)
|
|
&& sprout::tuples::detail::tuple_compare<0, I + 1, J, T, U>::eq(t, u))
|
|
;
|
|
}
|
|
static SPROUT_CONSTEXPR bool less(T const& t, U const& u) {
|
|
return (sprout::tuples::get<I>(t) < sprout::tuples::get<I>(u))
|
|
|| (!(sprout::tuples::get<I>(u) < sprout::tuples::get<I>(t))
|
|
&& sprout::tuples::detail::tuple_compare<0, I + 1, J, T, U>::less(t, u)
|
|
)
|
|
;
|
|
}
|
|
};
|
|
} // namespace detail
|
|
template<typename... TTypes, typename... UTypes>
|
|
SPROUT_CONSTEXPR inline bool operator==(
|
|
sprout::tuples::tuple<TTypes...> const& lhs,
|
|
sprout::tuples::tuple<UTypes...> const& rhs
|
|
)
|
|
{
|
|
typedef sprout::tuples::tuple<TTypes...> T;
|
|
typedef sprout::tuples::tuple<UTypes...> U;
|
|
return sprout::tuples::detail::tuple_compare<
|
|
sprout::tuples::tuple_size<T>::value - sprout::tuples::tuple_size<U>::value,
|
|
0,
|
|
sprout::tuples::tuple_size<T>::value,
|
|
T,
|
|
U
|
|
>::eq(lhs, rhs);
|
|
}
|
|
template<typename... TTypes, typename... UTypes>
|
|
SPROUT_CONSTEXPR inline bool operator<(
|
|
sprout::tuples::tuple<TTypes...> const& lhs,
|
|
sprout::tuples::tuple<UTypes...> const& rhs
|
|
)
|
|
{
|
|
typedef sprout::tuples::tuple<TTypes...> T;
|
|
typedef sprout::tuples::tuple<UTypes...> U;
|
|
return sprout::tuples::detail::tuple_compare<
|
|
sprout::tuples::tuple_size<T>::value - sprout::tuples::tuple_size<U>::value,
|
|
0,
|
|
sprout::tuples::tuple_size<T>::value,
|
|
T,
|
|
U
|
|
>::less(lhs, rhs);
|
|
}
|
|
template<typename... TTypes, typename... UTypes>
|
|
SPROUT_CONSTEXPR inline bool operator!=(
|
|
sprout::tuples::tuple<TTypes...> const& lhs,
|
|
sprout::tuples::tuple<UTypes...> const& rhs
|
|
)
|
|
{
|
|
return !(lhs == rhs);
|
|
}
|
|
template<typename... TTypes, typename... UTypes>
|
|
SPROUT_CONSTEXPR inline bool operator>(
|
|
sprout::tuples::tuple<TTypes...> const& lhs,
|
|
sprout::tuples::tuple<UTypes...> const& rhs
|
|
)
|
|
{
|
|
return rhs < lhs;
|
|
}
|
|
template<typename... TTypes, typename... UTypes>
|
|
SPROUT_CONSTEXPR inline bool operator<=(
|
|
sprout::tuples::tuple<TTypes...> const& lhs,
|
|
sprout::tuples::tuple<UTypes...> const& rhs
|
|
)
|
|
{
|
|
return !(rhs < lhs);
|
|
}
|
|
template<typename... TTypes, typename... UTypes>
|
|
SPROUT_CONSTEXPR inline bool operator>=(
|
|
sprout::tuples::tuple<TTypes...> const& lhs,
|
|
sprout::tuples::tuple<UTypes...> const& rhs
|
|
)
|
|
{
|
|
return !(lhs < rhs);
|
|
}
|
|
} // namespace tuples
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_TUPLE_TUPLE_COMPARISON_HPP
|