boost/hana/all_of.hpp

0001 /*!
0002 @file
0003 Defines `boost::hana::all_of`.
0004
0005 Copyright Louis Dionne 2013-2022
0006 Distributed under the Boost Software License, Version 1.0.
0007 (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
0008  */
0009
0010 #ifndef BOOST_HANA_ALL_OF_HPP
0011 #define BOOST_HANA_ALL_OF_HPP
0012
0013 #include <boost/hana/fwd/all_of.hpp>
0014
0015 #include <boost/hana/any_of.hpp>
0016 #include <boost/hana/concept/searchable.hpp>
0017 #include <boost/hana/config.hpp>
0018 #include <boost/hana/core/dispatch.hpp>
0019 #include <boost/hana/functional/compose.hpp>
0020 #include <boost/hana/not.hpp>
0021
0022
0023 namespace boost { namespace hana {
0024     //! @cond
0025     template <typename Xs, typename Pred>
0026     constexpr auto all_of_t::operator()(Xs&& xs, Pred&& pred) const {
0027         using S = typename hana::tag_of<Xs>::type;
0028         using AllOf = BOOST_HANA_DISPATCH_IF(all_of_impl<S>,
0029             hana::Searchable<S>::value
0030         );
0031
0032     #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
0033         static_assert(hana::Searchable<S>::value,
0034         "hana::all_of(xs, pred) requires 'xs' to be a Searchable");
0035     #endif
0036
0037         return AllOf::apply(static_cast<Xs&&>(xs), static_cast<Pred&&>(pred));
0038     }
0039     //! @endcond
0040
0041     template <typename S, bool condition>
0042     struct all_of_impl<S, when<condition>> : default_ {
0043         template <typename Xs, typename Pred>
0044         static constexpr auto apply(Xs&& xs, Pred&& pred) {
0045             return hana::not_(hana::any_of(static_cast<Xs&&>(xs),
0046                     hana::compose(hana::not_, static_cast<Pred&&>(pred))));
0047         }
0048     };
0049 }} // end namespace boost::hana
0050
0051 #endif // !BOOST_HANA_ALL_OF_HPP