forked from boostorg/mp11
189 lines
4.7 KiB
C++
189 lines
4.7 KiB
C++
#ifndef BOOST_MP11_SET_HPP_INCLUDED
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#define BOOST_MP11_SET_HPP_INCLUDED
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// Copyright 2015, 2019 Peter Dimov.
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//
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// Distributed under the Boost Software License, Version 1.0.
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//
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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#include <boost/mp11/utility.hpp>
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#include <boost/mp11/function.hpp>
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#include <boost/mp11/detail/mp_list.hpp>
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#include <boost/mp11/detail/mp_append.hpp>
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#include <boost/mp11/detail/mp_copy_if.hpp>
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#include <boost/mp11/detail/mp_remove_if.hpp>
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#include <boost/mp11/detail/mp_is_list.hpp>
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#include <type_traits>
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namespace boost
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{
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namespace mp11
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{
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// mp_set_contains<S, V>
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namespace detail
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{
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template<class S, class V> struct mp_set_contains_impl
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{
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};
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template<template<class...> class L, class... T, class V> struct mp_set_contains_impl<L<T...>, V>
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{
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using type = mp_to_bool<std::is_base_of<mp_identity<V>, mp_inherit<mp_identity<T>...> > >;
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};
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} // namespace detail
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template<class S, class V> using mp_set_contains = typename detail::mp_set_contains_impl<S, V>::type;
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// mp_set_push_back<S, T...>
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namespace detail
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{
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template<class S, class... T> struct mp_set_push_back_impl
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{
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};
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template<template<class...> class L, class... U> struct mp_set_push_back_impl<L<U...>>
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{
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using type = L<U...>;
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};
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template<template<class...> class L, class... U, class T1, class... T> struct mp_set_push_back_impl<L<U...>, T1, T...>
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{
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using S = mp_if<mp_set_contains<L<U...>, T1>, L<U...>, L<U..., T1>>;
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using type = typename mp_set_push_back_impl<S, T...>::type;
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};
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} // namespace detail
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template<class S, class... T> using mp_set_push_back = typename detail::mp_set_push_back_impl<S, T...>::type;
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// mp_set_push_front<S, T...>
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namespace detail
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{
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template<class S, class... T> struct mp_set_push_front_impl
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{
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};
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template<template<class...> class L, class... U> struct mp_set_push_front_impl<L<U...>>
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{
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using type = L<U...>;
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};
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template<template<class...> class L, class... U, class T1> struct mp_set_push_front_impl<L<U...>, T1>
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{
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using type = mp_if<mp_set_contains<L<U...>, T1>, L<U...>, L<T1, U...>>;
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};
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template<template<class...> class L, class... U, class T1, class... T> struct mp_set_push_front_impl<L<U...>, T1, T...>
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{
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using S = typename mp_set_push_front_impl<L<U...>, T...>::type;
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using type = typename mp_set_push_front_impl<S, T1>::type;
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};
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} // namespace detail
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template<class S, class... T> using mp_set_push_front = typename detail::mp_set_push_front_impl<S, T...>::type;
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// mp_is_set<S>
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namespace detail
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{
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template<class S> struct mp_is_set_impl
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{
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using type = mp_false;
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};
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template<template<class...> class L, class... T> struct mp_is_set_impl<L<T...>>
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{
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using type = mp_to_bool<std::is_same<mp_list<T...>, mp_set_push_back<mp_list<>, T...> > >;
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};
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} // namespace detail
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template<class S> using mp_is_set = typename detail::mp_is_set_impl<S>::type;
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// mp_set_union<L...>
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namespace detail
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{
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template<class... L> struct mp_set_union_impl
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{
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};
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template<> struct mp_set_union_impl<>
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{
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using type = mp_list<>;
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};
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template<template<class...> class L, class... T> struct mp_set_union_impl<L<T...>>
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{
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using type = L<T...>;
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};
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template<template<class...> class L1, class... T1, template<class...> class L2, class... T2> struct mp_set_union_impl<L1<T1...>, L2<T2...>>
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{
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using type = mp_set_push_back<L1<T1...>, T2...>;
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};
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template<class L1, class... L> using mp_set_union_ = typename mp_set_union_impl<L1, mp_append<mp_list<>, L...>>::type;
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template<class L1, class L2, class L3, class... L> struct mp_set_union_impl<L1, L2, L3, L...>: mp_defer<mp_set_union_, L1, L2, L3, L...>
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{
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};
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} // namespace detail
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template<class... L> using mp_set_union = typename detail::mp_set_union_impl<L...>::type;
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// mp_set_intersection<S...>
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namespace detail
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{
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template<class... S> struct in_all_sets
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{
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template<class T> using fn = mp_all< mp_set_contains<S, T>... >;
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};
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template<class L, class... S> using mp_set_intersection_ = mp_if< mp_all<mp_is_list<S>...>, mp_copy_if_q<L, detail::in_all_sets<S...>> >;
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template<class... S> struct mp_set_intersection_impl
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{
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};
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template<> struct mp_set_intersection_impl<>
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{
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using type = mp_list<>;
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};
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template<class L, class... S> struct mp_set_intersection_impl<L, S...>: mp_defer<mp_set_intersection_, L, S...>
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{
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};
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} // namespace detail
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template<class... S> using mp_set_intersection = typename detail::mp_set_intersection_impl<S...>::type;
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// mp_set_difference<L, S...>
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namespace detail
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{
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template<class... S> struct in_any_set
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{
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template<class T> using fn = mp_any< mp_set_contains<S, T>... >;
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};
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} // namespace detail
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template<class L, class... S> using mp_set_difference = mp_if< mp_all<mp_is_list<S>...>, mp_remove_if_q<L, detail::in_any_set<S...>> >;
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} // namespace mp11
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} // namespace boost
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#endif // #ifndef BOOST_MP11_SET_HPP_INCLUDED
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