1 #ifndef BOOST_MP11_FUNCTION_HPP_INCLUDED
2 #define BOOST_MP11_FUNCTION_HPP_INCLUDED
4 // Copyright 2015-2019 Peter Dimov.
6 // Distributed under the Boost Software License, Version 1.0.
8 // See accompanying file LICENSE_1_0.txt or copy at
9 // http://www.boost.org/LICENSE_1_0.txt
11 #include <boost/mp11/integral.hpp>
12 #include <boost/mp11/utility.hpp>
13 #include <boost/mp11/detail/mp_list.hpp>
14 #include <boost/mp11/detail/mp_count.hpp>
15 #include <boost/mp11/detail/mp_plus.hpp>
16 #include <boost/mp11/detail/mp_min_element.hpp>
17 #include <boost/mp11/detail/mp_void.hpp>
18 #include <boost/mp11/detail/config.hpp>
19 #include <type_traits>
27 // in detail/mp_void.hpp
30 #if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1910 )
35 template<class... T> struct mp_and_impl;
39 template<class... T> using mp_and = mp_to_bool< typename detail::mp_and_impl<T...>::type >;
44 template<> struct mp_and_impl<>
49 template<class T> struct mp_and_impl<T>
54 template<class T1, class... T> struct mp_and_impl<T1, T...>
56 using type = mp_eval_if< mp_not<T1>, T1, mp_and, T... >;
66 template<class L, class E = void> struct mp_and_impl
68 using type = mp_false;
71 template<class... T> struct mp_and_impl< mp_list<T...>, mp_void<mp_if<T, void>...> >
78 template<class... T> using mp_and = typename detail::mp_and_impl<mp_list<T...>>::type;
83 // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86355
84 #if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1920 ) || BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, != 0 )
86 template<class... T> using mp_all = mp_bool< mp_count_if< mp_list<T...>, mp_not >::value == 0 >;
88 #elif defined( BOOST_MP11_HAS_FOLD_EXPRESSIONS )
90 template<class... T> using mp_all = mp_bool<(static_cast<bool>(T::value) && ...)>;
94 template<class... T> using mp_all = mp_and<mp_to_bool<T>...>;
102 template<class... T> struct mp_or_impl;
104 } // namespace detail
106 template<class... T> using mp_or = mp_to_bool< typename detail::mp_or_impl<T...>::type >;
111 template<> struct mp_or_impl<>
113 using type = mp_false;
116 template<class T> struct mp_or_impl<T>
121 template<class T1, class... T> struct mp_or_impl<T1, T...>
123 using type = mp_eval_if< T1, T1, mp_or, T... >;
126 } // namespace detail
129 // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86356
130 #if defined( BOOST_MP11_HAS_FOLD_EXPRESSIONS ) && !BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, != 0 ) && !BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1920 )
132 template<class... T> using mp_any = mp_bool<(static_cast<bool>(T::value) || ...)>;
136 template<class... T> using mp_any = mp_bool< mp_count_if< mp_list<T...>, mp_to_bool >::value != 0 >;
144 template<class... T> struct mp_same_impl;
146 template<> struct mp_same_impl<>
148 using type = mp_true;
151 template<class T1, class... T> struct mp_same_impl<T1, T...>
153 using type = mp_all<std::is_same<T1, T>...>;
156 } // namespace detail
158 template<class... T> using mp_same = typename detail::mp_same_impl<T...>::type;
164 template<class... T> struct mp_similar_impl;
166 template<> struct mp_similar_impl<>
168 using type = mp_true;
171 template<class T> struct mp_similar_impl<T>
173 using type = mp_true;
176 template<class T> struct mp_similar_impl<T, T>
178 using type = mp_true;
181 template<class T1, class T2> struct mp_similar_impl<T1, T2>
183 using type = mp_false;
186 template<template<class...> class L, class... T1, class... T2> struct mp_similar_impl<L<T1...>, L<T2...>>
188 using type = mp_true;
191 template<class T1, class T2, class T3, class... T> struct mp_similar_impl<T1, T2, T3, T...>
193 using type = mp_all< typename mp_similar_impl<T1, T2>::type, typename mp_similar_impl<T1, T3>::type, typename mp_similar_impl<T1, T>::type... >;
196 } // namespace detail
198 template<class... T> using mp_similar = typename detail::mp_similar_impl<T...>::type;
201 # pragma GCC diagnostic push
202 # pragma GCC diagnostic ignored "-Wsign-compare"
206 template<class T1, class T2> using mp_less = mp_bool<(T1::value < 0 && T2::value >= 0) || ((T1::value < T2::value) && !(T1::value >= 0 && T2::value < 0))>;
209 # pragma GCC diagnostic pop
213 template<class T1, class... T> using mp_min = mp_min_element<mp_list<T1, T...>, mp_less>;
216 template<class T1, class... T> using mp_max = mp_max_element<mp_list<T1, T...>, mp_less>;
221 #endif // #ifndef BOOST_MP11_FUNCTION_HPP_INCLUDED