FM / hana

/usr/include/boost/hana

Name	Size	Mode	Actions
concept/	-	0755	rm
core/	-	0755	rm
detail/	-	0755	rm
experimental/	-	0755	rm
ext/	-	0755	rm
functional/	-	0755	rm
fwd/	-	0755	rm
accessors.hpp	1513	0644	edit dl rm
adapt_adt.hpp	422	0644	edit dl rm
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back.hpp	1534	0644	edit dl rm
basic_tuple.hpp	9455	0644	edit dl rm
bool.hpp	9747	0644	edit dl rm
cartesian_product.hpp	3860	0644	edit dl rm
chain.hpp	1488	0644	edit dl rm
comparing.hpp	1222	0644	edit dl rm
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concept.hpp	1301	0644	edit dl rm
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core.hpp	610	0644	edit dl rm
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fill.hpp	2216	0644	edit dl rm
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find.hpp	1732	0644	edit dl rm
find_if.hpp	4011	0644	edit dl rm
first.hpp	1242	0644	edit dl rm
flatten.hpp	1769	0644	edit dl rm
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functional.hpp	1186	0644	edit dl rm
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group.hpp	5543	0644	edit dl rm
hash.hpp	3572	0644	edit dl rm
if.hpp	1834	0644	edit dl rm
index_if.hpp	3485	0644	edit dl rm
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integral_constant.hpp	389	0644	edit dl rm
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intersperse.hpp	2586	0644	edit dl rm
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lift.hpp	1500	0644	edit dl rm
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negate.hpp	1857	0644	edit dl rm
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set.hpp	11854	0644	edit dl rm
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unique.hpp	2361	0644	edit dl rm
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version.hpp	2032	0644	edit dl rm
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zero.hpp	2454	0644	edit dl rm
zip.hpp	1462	0644	edit dl rm
zip_shortest.hpp	1604	0644	edit dl rm
zip_shortest_with.hpp	2116	0644	edit dl rm
zip_with.hpp	2292	0644	edit dl rm

Edit: /usr/include/boost/hana/find_if.hpp (4011B)

/*!
@file
Defines `boost::hana::find_if`.

@copyright Louis Dionne 2013-2017
@copyright Jason Rice 2017
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_FIND_IF_HPP
#define BOOST_HANA_FIND_IF_HPP

#include <boost/hana/fwd/find_if.hpp>

#include <boost/hana/accessors.hpp>
#include <boost/hana/at.hpp>
#include <boost/hana/bool.hpp>
#include <boost/hana/concept/iterable.hpp>
#include <boost/hana/concept/searchable.hpp>
#include <boost/hana/concept/struct.hpp>
#include <boost/hana/config.hpp>
#include <boost/hana/core/dispatch.hpp>
#include <boost/hana/first.hpp>
#include <boost/hana/functional/compose.hpp>
#include <boost/hana/index_if.hpp>
#include <boost/hana/second.hpp>
#include <boost/hana/transform.hpp>

#include <cstddef>
#include <utility>

BOOST_HANA_NAMESPACE_BEGIN
    //! @cond
    template <typename Xs, typename Pred>
    constexpr auto find_if_t::operator()(Xs&& xs, Pred&& pred) const {
        using S = typename hana::tag_of<Xs>::type;
        using FindIf = BOOST_HANA_DISPATCH_IF(find_if_impl<S>,
            hana::Searchable<S>::value
        );

#ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
        static_assert(hana::Searchable<S>::value,
        "hana::find_if(xs, pred) requires 'xs' to be a Searchable");
    #endif

return FindIf::apply(static_cast<Xs&&>(xs), static_cast<Pred&&>(pred));
    }
    //! @endcond

template <typename S, bool condition>
    struct find_if_impl<S, when<condition>> : default_ {
        template <typename ...Args>
        static constexpr auto apply(Args&& ...) = delete;
    };

namespace detail {
        template <typename Xs>
        struct partial_at {
            Xs const& xs;

template <typename I>
            constexpr decltype(auto) operator()(I i) const {
                return hana::at(xs, i);
            }
        };
    }

template <typename Tag>
    struct find_if_impl<Tag, when<Iterable<Tag>::value>> {
        template <typename Xs, typename Pred>
        static constexpr auto apply(Xs&& xs, Pred&& pred) {
            using Result = decltype(hana::index_if(
                static_cast<Xs&&>(xs), static_cast<Pred&&>(pred)));

return hana::transform(Result{},
                detail::partial_at<std::decay_t<Xs>>{static_cast<Xs&&>(xs)});
        }
    };

template <typename T, std::size_t N>
    struct find_if_impl<T[N]> {
        template <typename Xs>
        static constexpr auto find_if_helper(Xs&&, hana::false_)
        { return hana::nothing; }

template <typename Xs>
        static constexpr auto find_if_helper(Xs&& xs, hana::true_)
        { return hana::just(static_cast<Xs&&>(xs)[0]); }

template <typename Xs, typename Pred>
        static constexpr auto apply(Xs&& xs, Pred&& pred) {
            return find_if_helper(static_cast<Xs&&>(xs),
                hana::bool_c<decltype(
                    static_cast<Pred&&>(pred)(static_cast<Xs&&>(xs)[0])
                )::value>
            );
        }
    };

namespace struct_detail {
        template <typename X>
        struct get_member {
            X x;
            template <typename Member>
            constexpr decltype(auto) operator()(Member&& member) && {
                return hana::second(static_cast<Member&&>(member))(
                    static_cast<X&&>(x)
                );
            }
        };
    }

template <typename S>
    struct find_if_impl<S, when<hana::Struct<S>::value>> {
        template <typename X, typename Pred>
        static constexpr decltype(auto) apply(X&& x, Pred&& pred) {
            return hana::transform(
                hana::find_if(hana::accessors<S>(),
                    hana::compose(static_cast<Pred&&>(pred), hana::first)
                ),
                struct_detail::get_member<X>{static_cast<X&&>(x)}
            );
        }
    };
BOOST_HANA_NAMESPACE_END

#endif // !BOOST_HANA_FIND_IF_HPP

/*! @file Defines `boost::hana::find_if`. @copyright Louis Dionne 2013-2017 @copyright Jason Rice 2017 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_FIND_IF_HPP #define BOOST_HANA_FIND_IF_HPP #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include BOOST_HANA_NAMESPACE_BEGIN //! @cond template constexpr auto find_if_t::operator()(Xs&& xs, Pred&& pred) const { using S = typename hana::tag_of::type; using FindIf = BOOST_HANA_DISPATCH_IF(find_if_impl, hana::Searchable::value ); #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS static_assert(hana::Searchable::value, "hana::find_if(xs, pred) requires 'xs' to be a Searchable"); #endif return FindIf::apply(static_cast(xs), static_cast(pred)); } //! @endcond template struct find_if_impl> : default_ { template static constexpr auto apply(Args&& ...) = delete; }; namespace detail { template struct partial_at { Xs const& xs; template constexpr decltype(auto) operator()(I i) const { return hana::at(xs, i); } }; } template struct find_if_impl::value>> { template static constexpr auto apply(Xs&& xs, Pred&& pred) { using Result = decltype(hana::index_if( static_cast(xs), static_cast(pred))); return hana::transform(Result{}, detail::partial_at>{static_cast(xs)}); } }; template struct find_if_impl { template static constexpr auto find_if_helper(Xs&&, hana::false_) { return hana::nothing; } template static constexpr auto find_if_helper(Xs&& xs, hana::true_) { return hana::just(static_cast(xs)[0]); } template static constexpr auto apply(Xs&& xs, Pred&& pred) { return find_if_helper(static_cast(xs), hana::bool_c(pred)(static_cast(xs)[0]) )::value> ); } }; namespace struct_detail { template struct get_member { X x; template constexpr decltype(auto) operator()(Member&& member) && { return hana::second(static_cast(member))( static_cast(x) ); } }; } template struct find_if_impl::value>> { template static constexpr decltype(auto) apply(X&& x, Pred&& pred) { return hana::transform( hana::find_if(hana::accessors(), hana::compose(static_cast(pred), hana::first) ), struct_detail::get_member{static_cast(x)} ); } }; BOOST_HANA_NAMESPACE_END #endif // !BOOST_HANA_FIND_IF_HPP