#ifndef BOOST_MP11_MAP_HPP_INCLUDED #define BOOST_MP11_MAP_HPP_INCLUDED // Copyright 2015-2017 Peter Dimov. // // Distributed under the Boost Software License, Version 1.0. // // See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt #include <boost/mp11/detail/mp_map_find.hpp> #include <boost/mp11/list.hpp> #include <boost/mp11/integral.hpp> #include <boost/mp11/utility.hpp> #include <boost/mp11/algorithm.hpp> #include <boost/mp11/function.hpp> #include <boost/mp11/set.hpp> #include <type_traits> namespace boost { namespace mp11 { // mp_map_contains<M, K> template<class M, class K> using mp_map_contains = mp_not<std::is_same<mp_map_find<M, K>, void>>; // mp_map_insert<M, T> template<class M, class T> using mp_map_insert = mp_if< mp_map_contains<M, mp_first<T>>, M, mp_push_back<M, T> >; // mp_map_replace<M, T> namespace detail { template<class M, class T> struct mp_map_replace_impl; template<template<class...> class M, class... U, class T> struct mp_map_replace_impl<M<U...>, T> { using K = mp_first<T>; // mp_replace_if is inlined here using a struct _f because of msvc-14.0 template<class V> struct _f { using type = mp_if< std::is_same<mp_first<V>, K>, T, V >; }; using type = mp_if< mp_map_contains<M<U...>, K>, M<typename _f<U>::type...>, M<U..., T> >; }; } // namespace detail template<class M, class T> using mp_map_replace = typename detail::mp_map_replace_impl<M, T>::type; // mp_map_update<M, T, F> namespace detail { template<class M, class T, template<class...> class F> struct mp_map_update_impl { template<class U> using _f = std::is_same<mp_first<T>, mp_first<U>>; // _f3<L<X, Y...>> -> L<X, F<X, Y...>> template<class L> using _f3 = mp_assign<L, mp_list<mp_first<L>, mp_rename<L, F> > >; using type = mp_if< mp_map_contains<M, mp_first<T>>, mp_transform_if<_f, _f3, M>, mp_push_back<M, T> >; }; } // namespace detail template<class M, class T, template<class...> class F> using mp_map_update = typename detail::mp_map_update_impl<M, T, F>::type; template<class M, class T, class Q> using mp_map_update_q = mp_map_update<M, T, Q::template fn>; // mp_map_erase<M, K> namespace detail { template<class M, class K> struct mp_map_erase_impl { template<class T> using _f = std::is_same<mp_first<T>, K>; using type = mp_remove_if<M, _f>; }; } // namespace detail template<class M, class K> using mp_map_erase = typename detail::mp_map_erase_impl<M, K>::type; // mp_map_keys<M> template<class M> using mp_map_keys = mp_transform<mp_first, M>; // mp_is_map<M> namespace detail { template<class L> struct mp_is_map_element: mp_false { }; template<template<class...> class L, class T1, class... T> struct mp_is_map_element<L<T1, T...>>: mp_true { }; template<class M> using mp_keys_are_set = mp_is_set<mp_map_keys<M>>; template<class M> struct mp_is_map_impl { using type = mp_false; }; template<template<class...> class M, class... T> struct mp_is_map_impl<M<T...>> { using type = mp_eval_if<mp_not<mp_all<mp_is_map_element<T>...>>, mp_false, mp_keys_are_set, M<T...>>; }; } // namespace detail template<class M> using mp_is_map = typename detail::mp_is_map_impl<M>::type; } // namespace mp11 } // namespace boost #endif // #ifndef BOOST_MP11_MAP_HPP_INCLUDED