Sprout/sprout/optional/comparison.hpp
2012-10-22 23:10:11 +09:00

49 lines
1.4 KiB
C++

#ifndef SPROUT_OPTIONAL_COMPARISON_HPP
#define SPROUT_OPTIONAL_COMPARISON_HPP
#include <sprout/config.hpp>
#include <sprout/optional/optional.hpp>
#include <sprout/utility/compare_pointees.hpp>
namespace sprout {
//
// operator==
// operator!=
// operator<
// operator>
// operator<=
// operator>=
//
template<typename T>
inline SPROUT_CONSTEXPR bool
operator==(sprout::optional<T> const& lhs, sprout::optional<T> const& rhs) {
return sprout::equal_pointees(lhs, rhs);
}
template<typename T>
inline SPROUT_CONSTEXPR bool
operator!=(sprout::optional<T> const& lhs, sprout::optional<T> const& rhs) {
return !(lhs == rhs);
}
template<typename T>
inline SPROUT_CONSTEXPR bool
operator<(sprout::optional<T> const& lhs, sprout::optional<T> const& rhs) {
return sprout::less_pointees(lhs, rhs);
}
template<typename T>
inline SPROUT_CONSTEXPR bool
operator>(sprout::optional<T> const& lhs, sprout::optional<T> const& rhs) {
return rhs < lhs;
}
template<typename T>
inline SPROUT_CONSTEXPR bool
operator<=(sprout::optional<T> const& lhs, sprout::optional<T> const& rhs) {
return !(rhs < lhs);
}
template<typename T>
inline SPROUT_CONSTEXPR bool
operator>=(sprout::optional<T> const& lhs, sprout::optional<T> const& rhs) {
return !(lhs < rhs);
}
} // namespace sprout
#endif // #ifndef SPROUT_OPTIONAL_COMPARISON_HPP