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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
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back.hpp	1534	0644	edit dl rm
basic_tuple.hpp	9455	0644	edit dl rm
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cartesian_product.hpp	3860	0644	edit dl rm
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zip_with.hpp	2292	0644	edit dl rm

Edit: /usr/include/boost/hana/basic_tuple.hpp (9455B)

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

@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_BASIC_TUPLE_HPP
#define BOOST_HANA_BASIC_TUPLE_HPP

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

#include <boost/hana/config.hpp>
#include <boost/hana/detail/decay.hpp>
#include <boost/hana/detail/ebo.hpp>
#include <boost/hana/fwd/at.hpp>
#include <boost/hana/fwd/bool.hpp>
#include <boost/hana/fwd/concept/sequence.hpp>
#include <boost/hana/fwd/core/make.hpp>
#include <boost/hana/fwd/core/tag_of.hpp>
#include <boost/hana/fwd/drop_front.hpp>
#include <boost/hana/fwd/integral_constant.hpp>
#include <boost/hana/fwd/is_empty.hpp>
#include <boost/hana/fwd/length.hpp>
#include <boost/hana/fwd/transform.hpp>
#include <boost/hana/fwd/unpack.hpp>

#include <cstddef>
#include <type_traits>
#include <utility>

BOOST_HANA_NAMESPACE_BEGIN
 namespace detail {
 //////////////////////////////////////////////////////////////////////
 // basic_tuple_impl<n, Xn>
 //////////////////////////////////////////////////////////////////////
 template <std::size_t> struct bti; // basic_tuple_index

struct from_other { };

template <typename Indices, typename ...Xn>
#ifdef BOOST_HANA_WORKAROUND_MSVC_EMPTYBASE
 struct __declspec(empty_bases) basic_tuple_impl;
#else
 struct basic_tuple_impl;
#endif

template <std::size_t ...n, typename ...Xn>
#ifdef BOOST_HANA_WORKAROUND_MSVC_EMPTYBASE
 struct __declspec(empty_bases) basic_tuple_impl<std::index_sequence<n...>, Xn...>
#else
 struct basic_tuple_impl<std::index_sequence<n...>, Xn...>
#endif
 : detail::ebo<bti<n>, Xn>...
 {
 static constexpr std::size_t size_ = sizeof...(Xn);

constexpr basic_tuple_impl() = default;

template <typename Other>
 explicit constexpr basic_tuple_impl(detail::from_other, Other&& other)
 : detail::ebo<bti<n>, Xn>(detail::ebo_get<bti<n>>(static_cast<Other&&>(other)))...
 { }

template <typename ...Yn>
 explicit constexpr basic_tuple_impl(Yn&& ...yn)
 : detail::ebo<bti<n>, Xn>(static_cast<Yn&&>(yn))...
 { }
 };
 }

//////////////////////////////////////////////////////////////////////////
 // basic_tuple
 //////////////////////////////////////////////////////////////////////////
 //! @cond
 template <typename ...Xn>
 struct basic_tuple final
 : detail::basic_tuple_impl<std::make_index_sequence<sizeof...(Xn)>, Xn...>
 {
 using Base = detail::basic_tuple_impl<std::make_index_sequence<sizeof...(Xn)>, Xn...>;

constexpr basic_tuple() = default;

// copy constructor
 template <typename Other, typename = typename std::enable_if<
 std::is_same<typename detail::decay<Other>::type, basic_tuple>::value
 >::type>
 constexpr basic_tuple(Other&& other)
 : Base(detail::from_other{}, static_cast<Other&&>(other))
 { }

template <typename ...Yn>
 explicit constexpr basic_tuple(Yn&& ...yn)
 : Base(static_cast<Yn&&>(yn)...)
 { }
 };
 //! @endcond

template <typename ...Xn>
 struct tag_of<basic_tuple<Xn...>> {
 using type = basic_tuple_tag;
 };

//////////////////////////////////////////////////////////////////////////
 // Foldable
 //////////////////////////////////////////////////////////////////////////
 template <>
 struct unpack_impl<basic_tuple_tag> {
 template <std::size_t ...i, typename ...Xn, typename F>
 static constexpr decltype(auto)
 apply(detail::basic_tuple_impl<std::index_sequence<i...>, Xn...> const& xs, F&& f) {
 return static_cast<F&&>(f)(
 detail::ebo_get<detail::bti>(
 static_cast<detail::ebo<detail::bti, Xn> const&>(xs)
 )...
 );
 }

template <std::size_t ...i, typename ...Xn, typename F>
 static constexpr decltype(auto)
 apply(detail::basic_tuple_impl<std::index_sequence<i...>, Xn...>& xs, F&& f) {
 return static_cast<F&&>(f)(
 detail::ebo_get<detail::bti>(
 static_cast<detail::ebo<detail::bti, Xn>&>(xs)
 )...
 );
 }

template <std::size_t ...i, typename ...Xn, typename F>
 static constexpr decltype(auto)
 apply(detail::basic_tuple_impl<std::index_sequence<i...>, Xn...>&& xs, F&& f) {
 return static_cast<F&&>(f)(
 detail::ebo_get<detail::bti>(
 static_cast<detail::ebo<detail::bti, Xn>&&>(xs)
 )...
 );
 }
 };

//////////////////////////////////////////////////////////////////////////
 // Functor
 //////////////////////////////////////////////////////////////////////////
 template <>
 struct transform_impl<basic_tuple_tag> {
 template <std::size_t ...i, typename ...Xn, typename F>
 static constexpr auto
 apply(detail::basic_tuple_impl<std::index_sequence<i...>, Xn...> const& xs, F const& f) {
 return hana::make_basic_tuple(
 f(detail::ebo_get<detail::bti>(
 static_cast<detail::ebo<detail::bti, Xn> const&>(xs)
 ))...
 );
 }

template <std::size_t ...i, typename ...Xn, typename F>
 static constexpr auto
 apply(detail::basic_tuple_impl<std::index_sequence<i...>, Xn...>& xs, F const& f) {
 return hana::make_basic_tuple(
 f(detail::ebo_get<detail::bti>(
 static_cast<detail::ebo<detail::bti, Xn>&>(xs)
 ))...
 );
 }

template <std::size_t ...i, typename ...Xn, typename F>
 static constexpr auto
 apply(detail::basic_tuple_impl<std::index_sequence<i...>, Xn...>&& xs, F const& f) {
 return hana::make_basic_tuple(
 f(detail::ebo_get<detail::bti>(
 static_cast<detail::ebo<detail::bti, Xn>&&>(xs)
 ))...
 );
 }
 };

//////////////////////////////////////////////////////////////////////////
 // Iterable
 //////////////////////////////////////////////////////////////////////////
 template <>
 struct at_impl<basic_tuple_tag> {
 template <typename Xs, typename N>
 static constexpr decltype(auto) apply(Xs&& xs, N const&) {
 constexpr std::size_t index = N::value;
 return detail::ebo_get<detail::bti<index>>(static_cast<Xs&&>(xs));
 }
 };

template <>
 struct drop_front_impl<basic_tuple_tag> {
 template <std::size_t N, typename Xs, std::size_t ...i>
 static constexpr auto drop_front_helper(Xs&& xs, std::index_sequence<i...>) {
 return hana::make_basic_tuple(
 detail::ebo_get<detail::bti<i+N>>(static_cast<Xs&&>(xs))...
 );
 }

template <typename Xs, typename N>
 static constexpr auto apply(Xs&& xs, N const&) {
 constexpr std::size_t len = detail::decay<Xs>::type::size_;
 return drop_front_helper<N::value>(static_cast<Xs&&>(xs), std::make_index_sequence<
 (N::value < len) ? len - N::value : 0
 >{});
 }
 };

template <>
 struct is_empty_impl<basic_tuple_tag> {
 template <typename ...Xs>
 static constexpr hana::bool_<sizeof...(Xs) == 0>
 apply(basic_tuple<Xs...> const&)
 { return {}; }
 };

// compile-time optimizations (to reduce the # of function instantiations)
 template <std::size_t n, typename ...Xs>
 constexpr decltype(auto) at_c(basic_tuple<Xs...> const& xs) {
 return detail::ebo_get<detail::bti<n>>(xs);
 }

template <std::size_t n, typename ...Xs>
 constexpr decltype(auto) at_c(basic_tuple<Xs...>& xs) {
 return detail::ebo_get<detail::bti<n>>(xs);
 }

template <std::size_t n, typename ...Xs>
 constexpr decltype(auto) at_c(basic_tuple<Xs...>&& xs) {
 return detail::ebo_get<detail::bti<n>>(static_cast<basic_tuple<Xs...>&&>(xs));
 }

//////////////////////////////////////////////////////////////////////////
 // Sequence
 //////////////////////////////////////////////////////////////////////////
 template <>
 struct Sequence<basic_tuple_tag> {
 static constexpr bool value = true;
 };

template <>
 struct make_impl<basic_tuple_tag> {
 template <typename ...Xn>
 static constexpr basic_tuple<typename detail::decay<Xn>::type...>
 apply(Xn&& ...xn) {
 return basic_tuple<typename detail::decay<Xn>::type...>{
 static_cast<Xn&&>(xn)...
 };
 }
 };

//////////////////////////////////////////////////////////////////////////
 // length
 //////////////////////////////////////////////////////////////////////////
 template <>
 struct length_impl<basic_tuple_tag> {
 template <typename ...Xn>
 static constexpr auto apply(basic_tuple<Xn...> const&) {
 return hana::size_t<sizeof...(Xn)>{};
 }
 };
BOOST_HANA_NAMESPACE_END

#endif // !BOOST_HANA_BASIC_TUPLE_HPP

/*! @file Defines `boost::hana::basic_tuple`. @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_BASIC_TUPLE_HPP #define BOOST_HANA_BASIC_TUPLE_HPP #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include BOOST_HANA_NAMESPACE_BEGIN namespace detail { ////////////////////////////////////////////////////////////////////// // basic_tuple_impl ////////////////////////////////////////////////////////////////////// template struct bti; // basic_tuple_index struct from_other { }; template #ifdef BOOST_HANA_WORKAROUND_MSVC_EMPTYBASE struct __declspec(empty_bases) basic_tuple_impl; #else struct basic_tuple_impl; #endif template #ifdef BOOST_HANA_WORKAROUND_MSVC_EMPTYBASE struct __declspec(empty_bases) basic_tuple_impl, Xn...> #else struct basic_tuple_impl, Xn...> #endif : detail::ebo, Xn>... { static constexpr std::size_t size_ = sizeof...(Xn); constexpr basic_tuple_impl() = default; template explicit constexpr basic_tuple_impl(detail::from_other, Other&& other) : detail::ebo, Xn>(detail::ebo_get>(static_cast(other)))... { } template explicit constexpr basic_tuple_impl(Yn&& ...yn) : detail::ebo, Xn>(static_cast(yn))... { } }; } ////////////////////////////////////////////////////////////////////////// // basic_tuple ////////////////////////////////////////////////////////////////////////// //! @cond template struct basic_tuple final : detail::basic_tuple_impl, Xn...> { using Base = detail::basic_tuple_impl, Xn...>; constexpr basic_tuple() = default; // copy constructor template ::type, basic_tuple>::value >::type> constexpr basic_tuple(Other&& other) : Base(detail::from_other{}, static_cast(other)) { } template explicit constexpr basic_tuple(Yn&& ...yn) : Base(static_cast(yn)...) { } }; //! @endcond template struct tag_of> { using type = basic_tuple_tag; }; ////////////////////////////////////////////////////////////////////////// // Foldable ////////////////////////////////////////////////////////////////////////// template <> struct unpack_impl { template static constexpr decltype(auto) apply(detail::basic_tuple_impl, Xn...> const& xs, F&& f) { return static_cast(f)( detail::ebo_get>( static_cast, Xn> const&>(xs) )... ); } template static constexpr decltype(auto) apply(detail::basic_tuple_impl, Xn...>& xs, F&& f) { return static_cast(f)( detail::ebo_get>( static_cast, Xn>&>(xs) )... ); } template static constexpr decltype(auto) apply(detail::basic_tuple_impl, Xn...>&& xs, F&& f) { return static_cast(f)( detail::ebo_get>( static_cast, Xn>&&>(xs) )... ); } }; ////////////////////////////////////////////////////////////////////////// // Functor ////////////////////////////////////////////////////////////////////////// template <> struct transform_impl { template static constexpr auto apply(detail::basic_tuple_impl, Xn...> const& xs, F const& f) { return hana::make_basic_tuple( f(detail::ebo_get>( static_cast, Xn> const&>(xs) ))... ); } template static constexpr auto apply(detail::basic_tuple_impl, Xn...>& xs, F const& f) { return hana::make_basic_tuple( f(detail::ebo_get>( static_cast, Xn>&>(xs) ))... ); } template static constexpr auto apply(detail::basic_tuple_impl, Xn...>&& xs, F const& f) { return hana::make_basic_tuple( f(detail::ebo_get>( static_cast, Xn>&&>(xs) ))... ); } }; ////////////////////////////////////////////////////////////////////////// // Iterable ////////////////////////////////////////////////////////////////////////// template <> struct at_impl { template static constexpr decltype(auto) apply(Xs&& xs, N const&) { constexpr std::size_t index = N::value; return detail::ebo_get>(static_cast(xs)); } }; template <> struct drop_front_impl { template static constexpr auto drop_front_helper(Xs&& xs, std::index_sequence) { return hana::make_basic_tuple( detail::ebo_get>(static_cast(xs))... ); } template static constexpr auto apply(Xs&& xs, N const&) { constexpr std::size_t len = detail::decay::type::size_; return drop_front_helper(static_cast(xs), std::make_index_sequence< (N::value < len) ? len - N::value : 0 >{}); } }; template <> struct is_empty_impl { template static constexpr hana::bool_ apply(basic_tuple const&) { return {}; } }; // compile-time optimizations (to reduce the # of function instantiations) template constexpr decltype(auto) at_c(basic_tuple const& xs) { return detail::ebo_get>(xs); } template constexpr decltype(auto) at_c(basic_tuple& xs) { return detail::ebo_get>(xs); } template constexpr decltype(auto) at_c(basic_tuple&& xs) { return detail::ebo_get>(static_cast&&>(xs)); } ////////////////////////////////////////////////////////////////////////// // Sequence ////////////////////////////////////////////////////////////////////////// template <> struct Sequence { static constexpr bool value = true; }; template <> struct make_impl { template static constexpr basic_tuple::type...> apply(Xn&& ...xn) { return basic_tuple::type...>{ static_cast(xn)... }; } }; ////////////////////////////////////////////////////////////////////////// // length ////////////////////////////////////////////////////////////////////////// template <> struct length_impl { template static constexpr auto apply(basic_tuple const&) { return hana::size_t{}; } }; BOOST_HANA_NAMESPACE_END #endif // !BOOST_HANA_BASIC_TUPLE_HPP