ferencd@0: #ifndef BASE_NAMED_OPERATOR_HPP
ferencd@0: #define BASE_NAMED_OPERATOR_HPP
ferencd@0: 
ferencd@0: #include <utility>
ferencd@0: 
ferencd@0: namespace base {
ferencd@0: 
ferencd@0: template <typename F>
ferencd@0: struct named_operator_wrapper {
ferencd@0:     F f;
ferencd@0: };
ferencd@0: 
ferencd@0: template <typename T, typename F>
ferencd@0: struct named_operator_lhs {
ferencd@0:     F f;
ferencd@0:     T& value;
ferencd@0: };
ferencd@0: 
ferencd@0: template <typename T, typename F>
ferencd@0: inline named_operator_lhs<T, F> operator <(T& lhs, named_operator_wrapper<F> rhs) {
ferencd@0:     return {rhs.f, lhs};
ferencd@0: }
ferencd@0: 
ferencd@0: template <typename T, typename F>
ferencd@0: inline named_operator_lhs<T const, F> operator <(T const& lhs, named_operator_wrapper<F> rhs) {
ferencd@0:     return {rhs.f, lhs};
ferencd@0: }
ferencd@0: 
ferencd@0: template <typename T1, typename T2, typename F>
ferencd@0: inline auto operator >(named_operator_lhs<T1, F> const& lhs, T2 const& rhs)
ferencd@0:     -> decltype(lhs.f(std::declval<T1>(), std::declval<T2>()))
ferencd@0: {
ferencd@0:     return lhs.f(lhs.value, rhs);
ferencd@0: }
ferencd@0: 
ferencd@0: template <typename T1, typename T2, typename F>
ferencd@0: inline auto operator >=(named_operator_lhs<T1, F> const& lhs, T2 const& rhs)
ferencd@0:     -> decltype(lhs.value = lhs.f(std::declval<T1>(), std::declval<T2>()))
ferencd@0: {
ferencd@0:     return lhs.value = lhs.f(lhs.value, rhs);
ferencd@0: }
ferencd@0: 
ferencd@0: template <typename F>
ferencd@0: inline 
ferencd@0: #ifndef _MSC_VER
ferencd@0: constexpr 
ferencd@0: #endif
ferencd@0: named_operator_wrapper<F> make_named_operator(F f) {
ferencd@0:     return {f};
ferencd@0: }
ferencd@0: 
ferencd@0: } // namespace base
ferencd@0: 
ferencd@0: #endif // ndef BASE_NAMED_OPERATOR_HPP