/*! @file Defines `boost::hana::all`. @copyright Louis Dionne 2013-2016 Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) */ #ifndef BOOST_HANA_ALL_HPP #define BOOST_HANA_ALL_HPP #include <boost/hana/fwd/all.hpp> #include <boost/hana/all_of.hpp> #include <boost/hana/concept/searchable.hpp> #include <boost/hana/config.hpp> #include <boost/hana/core/dispatch.hpp> #include <boost/hana/functional/id.hpp> BOOST_HANA_NAMESPACE_BEGIN //! @cond template <typename Xs> constexpr auto all_t::operator()(Xs&& xs) const { using S = typename hana::tag_of<Xs>::type; using All = BOOST_HANA_DISPATCH_IF(all_impl<S>, hana::Searchable<S>::value ); #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS static_assert(hana::Searchable<S>::value, "hana::all(xs) requires 'xs' to be a Searchable"); #endif return All::apply(static_cast<Xs&&>(xs)); } //! @endcond template <typename S, bool condition> struct all_impl<S, when<condition>> : default_ { template <typename Xs> static constexpr auto apply(Xs&& xs) { return hana::all_of(static_cast<Xs&&>(xs), hana::id); } }; BOOST_HANA_NAMESPACE_END #endif // !BOOST_HANA_ALL_HPP