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
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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
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comparing.hpp	1222	0644	edit dl rm
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concept.hpp	1301	0644	edit dl rm
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integral_constant.hpp	389	0644	edit dl rm
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zip_with.hpp	2292	0644	edit dl rm

Edit: /usr/include/boost/hana/range.hpp (9910B)

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

@copyright Louis Dionne 2013-2017
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_RANGE_HPP
#define BOOST_HANA_RANGE_HPP

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

#include <boost/hana/bool.hpp>
#include <boost/hana/concept/integral_constant.hpp>
#include <boost/hana/config.hpp>
#include <boost/hana/core/common.hpp>
#include <boost/hana/core/to.hpp>
#include <boost/hana/core/tag_of.hpp>
#include <boost/hana/detail/operators/adl.hpp>
#include <boost/hana/detail/operators/comparable.hpp>
#include <boost/hana/detail/operators/iterable.hpp>
#include <boost/hana/fwd/at.hpp>
#include <boost/hana/fwd/back.hpp>
#include <boost/hana/fwd/contains.hpp>
#include <boost/hana/fwd/drop_front.hpp>
#include <boost/hana/fwd/drop_front_exactly.hpp>
#include <boost/hana/fwd/equal.hpp>
#include <boost/hana/fwd/find.hpp>
#include <boost/hana/fwd/front.hpp>
#include <boost/hana/fwd/is_empty.hpp>
#include <boost/hana/fwd/length.hpp>
#include <boost/hana/fwd/maximum.hpp>
#include <boost/hana/fwd/minimum.hpp>
#include <boost/hana/fwd/product.hpp>
#include <boost/hana/fwd/sum.hpp>
#include <boost/hana/fwd/unpack.hpp>
#include <boost/hana/integral_constant.hpp> // required by fwd decl and below
#include <boost/hana/optional.hpp>
#include <boost/hana/value.hpp>

#include <cstddef>
#include <utility>

BOOST_HANA_NAMESPACE_BEGIN
    //////////////////////////////////////////////////////////////////////////
    // range<>
    //////////////////////////////////////////////////////////////////////////
    //! @cond
    template <typename T, T From, T To>
    struct range
        : detail::operators::adl<range<T, From, To>>
        , detail::iterable_operators<range<T, From, To>>
    {
        static_assert(From <= To,
        "hana::make_range(from, to) requires 'from <= to'");

using value_type = T;
        static constexpr value_type from = From;
        static constexpr value_type to = To;
    };
    //! @endcond

template <typename T, T From, T To>
    struct tag_of<range<T, From, To>> {
        using type = range_tag;
    };

//////////////////////////////////////////////////////////////////////////
    // make<range_tag>
    //////////////////////////////////////////////////////////////////////////
    template <>
    struct make_impl<range_tag> {
        template <typename From, typename To>
        static constexpr auto apply(From const&, To const&) {

#ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
            static_assert(hana::IntegralConstant<From>::value,
            "hana::make_range(from, to) requires 'from' to be an IntegralConstant");

static_assert(hana::IntegralConstant<To>::value,
            "hana::make_range(from, to) requires 'to' to be an IntegralConstant");
        #endif

using T = typename common<
                typename hana::tag_of<From>::type::value_type,
                typename hana::tag_of<To>::type::value_type
            >::type;
            constexpr T from = hana::to<T>(From::value);
            constexpr T to = hana::to<T>(To::value);
            return range<T, from, to>{};
        }
    };

//////////////////////////////////////////////////////////////////////////
    // Operators
    //////////////////////////////////////////////////////////////////////////
    namespace detail {
        template <>
        struct comparable_operators<range_tag> {
            static constexpr bool value = true;
        };
    }

//////////////////////////////////////////////////////////////////////////
    // Comparable
    //////////////////////////////////////////////////////////////////////////
    template <>
    struct equal_impl<range_tag, range_tag> {
        template <typename R1, typename R2>
        static constexpr auto apply(R1 const&, R2 const&) {
            return hana::bool_c<
                (R1::from == R1::to && R2::from == R2::to) ||
                (R1::from == R2::from && R1::to == R2::to)
            >;
        }
    };

//////////////////////////////////////////////////////////////////////////
    // Foldable
    //////////////////////////////////////////////////////////////////////////
    template <>
    struct unpack_impl<range_tag> {
        template <typename T, T from, typename F, T ...v>
        static constexpr decltype(auto)
        unpack_helper(F&& f, std::integer_sequence<T, v...>) {
            return static_cast<F&&>(f)(integral_constant<T, from + v>{}...);
        }

template <typename T, T from, T to, typename F>
        static constexpr decltype(auto) apply(range<T, from, to> const&, F&& f) {
            return unpack_helper<T, from>(static_cast<F&&>(f),
                std::make_integer_sequence<T, to - from>{});
        }
    };

template <>
    struct length_impl<range_tag> {
        template <typename T, T from, T to>
        static constexpr auto apply(range<T, from, to> const&)
        { return hana::size_c<static_cast<std::size_t>(to - from)>; }
    };

template <>
    struct minimum_impl<range_tag> {
        template <typename T, T from, T to>
        static constexpr auto apply(range<T, from, to> const&)
        { return integral_c<T, from>; }
    };

template <>
    struct maximum_impl<range_tag> {
        template <typename T, T from, T to>
        static constexpr auto apply(range<T, from, to> const&)
        { return integral_c<T, to-1>; }
    };

template <>
    struct sum_impl<range_tag> {
        // Returns the sum of `[m, n]`, where `m <= n` always hold.
        template <typename I>
        static constexpr I sum_helper(I m, I n) {
            if (m == n)
                return m;

// 0 == m < n
            else if (0 == m)
                return n * (n+1) / 2;

// 0 < m < n
            else if (0 < m)
                return sum_helper(0, n) - sum_helper(0, m-1);

// m < 0 <= n
            else if (0 <= n)
                return sum_helper(0, n) - sum_helper(0, -m);

// m < n < 0
            else
                return -sum_helper(-n, -m);
        }

template <typename, typename T, T from, T to>
        static constexpr auto apply(range<T, from, to> const&) {
            return integral_c<T, from == to ? 0 : sum_helper(from, to-1)>;
        }
    };

template <>
    struct product_impl<range_tag> {
        // Returns the product of `[m, n)`, where `m <= n` always hold.
        template <typename I>
        static constexpr I product_helper(I m, I n) {
            if (m <= 0 && 0 < n)
                return 0;
            else {
                I p = 1;
                for (; m != n; ++m)
                    p *= m;
                return p;
            }
        }

template <typename, typename T, T from, T to>
        static constexpr auto apply(range<T, from, to> const&)
        { return integral_c<T, product_helper(from, to)>; }
    };

//////////////////////////////////////////////////////////////////////////
    // Searchable
    //////////////////////////////////////////////////////////////////////////
    template <>
    struct find_impl<range_tag> {
        template <typename T, T from, typename N>
        static constexpr auto find_helper(hana::true_) {
            constexpr T n = N::value;
            return hana::just(hana::integral_c<T, n>);
        }

template <typename T, T from, typename N>
        static constexpr auto find_helper(hana::false_)
        { return hana::nothing; }

template <typename T, T from, T to, typename N>
        static constexpr auto apply(range<T, from, to> const&, N const&) {
            constexpr auto n = N::value;
            return find_helper<T, from, N>(hana::bool_c<(n >= from && n < to)>);
        }
    };

template <>
    struct contains_impl<range_tag> {
        template <typename T, T from, T to, typename N>
        static constexpr auto apply(range<T, from, to> const&, N const&) {
            constexpr auto n = N::value;
            return bool_c<(n >= from && n < to)>;
        }
    };

//////////////////////////////////////////////////////////////////////////
    // Iterable
    //////////////////////////////////////////////////////////////////////////
    template <>
    struct front_impl<range_tag> {
        template <typename T, T from, T to>
        static constexpr auto apply(range<T, from, to> const&)
        { return integral_c<T, from>; }
    };

template <>
    struct is_empty_impl<range_tag> {
        template <typename T, T from, T to>
        static constexpr auto apply(range<T, from, to> const&)
        { return bool_c<from == to>; }
    };

template <>
    struct at_impl<range_tag> {
        template <typename T, T from, T to, typename N>
        static constexpr auto apply(range<T, from, to> const&, N const&) {
            constexpr auto n = N::value;
            return integral_c<T, from + n>;
        }
    };

template <>
    struct back_impl<range_tag> {
        template <typename T, T from, T to>
        static constexpr auto apply(range<T, from, to> const&)
        { return integral_c<T, to - 1>; }
    };

template <>
    struct drop_front_impl<range_tag> {
        template <typename T, T from, T to, typename N>
        static constexpr auto apply(range<T, from, to> const&, N const&) {
            constexpr auto n = N::value;
            return range<T, (to < from + n ? to : from + n), to>{};
        }
    };

template <>
    struct drop_front_exactly_impl<range_tag> {
        template <typename T, T from, T to, typename N>
        static constexpr auto apply(range<T, from, to> const&, N const&) {
            constexpr auto n = N::value;
            return range<T, from + n, to>{};
        }
    };
BOOST_HANA_NAMESPACE_END

#endif // !BOOST_HANA_RANGE_HPP

/*! @file Defines `boost::hana::range`. @copyright Louis Dionne 2013-2017 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_RANGE_HPP #define BOOST_HANA_RANGE_HPP #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include // required by fwd decl and below #include #include #include #include BOOST_HANA_NAMESPACE_BEGIN ////////////////////////////////////////////////////////////////////////// // range<> ////////////////////////////////////////////////////////////////////////// //! @cond template struct range : detail::operators::adl> , detail::iterable_operators> { static_assert(From <= To, "hana::make_range(from, to) requires 'from <= to'"); using value_type = T; static constexpr value_type from = From; static constexpr value_type to = To; }; //! @endcond template struct tag_of> { using type = range_tag; }; ////////////////////////////////////////////////////////////////////////// // make ////////////////////////////////////////////////////////////////////////// template <> struct make_impl { template static constexpr auto apply(From const&, To const&) { #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS static_assert(hana::IntegralConstant::value, "hana::make_range(from, to) requires 'from' to be an IntegralConstant"); static_assert(hana::IntegralConstant::value, "hana::make_range(from, to) requires 'to' to be an IntegralConstant"); #endif using T = typename common< typename hana::tag_of::type::value_type, typename hana::tag_of::type::value_type >::type; constexpr T from = hana::to(From::value); constexpr T to = hana::to(To::value); return range{}; } }; ////////////////////////////////////////////////////////////////////////// // Operators ////////////////////////////////////////////////////////////////////////// namespace detail { template <> struct comparable_operators { static constexpr bool value = true; }; } ////////////////////////////////////////////////////////////////////////// // Comparable ////////////////////////////////////////////////////////////////////////// template <> struct equal_impl { template static constexpr auto apply(R1 const&, R2 const&) { return hana::bool_c< (R1::from == R1::to && R2::from == R2::to) || (R1::from == R2::from && R1::to == R2::to) >; } }; ////////////////////////////////////////////////////////////////////////// // Foldable ////////////////////////////////////////////////////////////////////////// template <> struct unpack_impl { template static constexpr decltype(auto) unpack_helper(F&& f, std::integer_sequence) { return static_cast(f)(integral_constant{}...); } template static constexpr decltype(auto) apply(range const&, F&& f) { return unpack_helper(static_cast(f), std::make_integer_sequence{}); } }; template <> struct length_impl { template static constexpr auto apply(range const&) { return hana::size_c(to - from)>; } }; template <> struct minimum_impl { template static constexpr auto apply(range const&) { return integral_c; } }; template <> struct maximum_impl { template static constexpr auto apply(range const&) { return integral_c; } }; template <> struct sum_impl { // Returns the sum of `[m, n]`, where `m <= n` always hold. template static constexpr I sum_helper(I m, I n) { if (m == n) return m; // 0 == m < n else if (0 == m) return n * (n+1) / 2; // 0 < m < n else if (0 < m) return sum_helper(0, n) - sum_helper(0, m-1); // m < 0 <= n else if (0 <= n) return sum_helper(0, n) - sum_helper(0, -m); // m < n < 0 else return -sum_helper(-n, -m); } template static constexpr auto apply(range const&) { return integral_c; } }; template <> struct product_impl { // Returns the product of `[m, n)`, where `m <= n` always hold. template static constexpr I product_helper(I m, I n) { if (m <= 0 && 0 < n) return 0; else { I p = 1; for (; m != n; ++m) p *= m; return p; } } template static constexpr auto apply(range const&) { return integral_c; } }; ////////////////////////////////////////////////////////////////////////// // Searchable ////////////////////////////////////////////////////////////////////////// template <> struct find_impl { template static constexpr auto find_helper(hana::true_) { constexpr T n = N::value; return hana::just(hana::integral_c); } template static constexpr auto find_helper(hana::false_) { return hana::nothing; } template static constexpr auto apply(range const&, N const&) { constexpr auto n = N::value; return find_helper(hana::bool_c<(n >= from && n < to)>); } }; template <> struct contains_impl { template static constexpr auto apply(range const&, N const&) { constexpr auto n = N::value; return bool_c<(n >= from && n < to)>; } }; ////////////////////////////////////////////////////////////////////////// // Iterable ////////////////////////////////////////////////////////////////////////// template <> struct front_impl { template static constexpr auto apply(range const&) { return integral_c; } }; template <> struct is_empty_impl { template static constexpr auto apply(range const&) { return bool_c; } }; template <> struct at_impl { template static constexpr auto apply(range const&, N const&) { constexpr auto n = N::value; return integral_c; } }; template <> struct back_impl { template static constexpr auto apply(range const&) { return integral_c; } }; template <> struct drop_front_impl { template static constexpr auto apply(range const&, N const&) { constexpr auto n = N::value; return range{}; } }; template <> struct drop_front_exactly_impl { template static constexpr auto apply(range const&, N const&) { constexpr auto n = N::value; return range{}; } }; BOOST_HANA_NAMESPACE_END #endif // !BOOST_HANA_RANGE_HPP