Revert "externals: Update boost to 1.72 and add Boost Context"

boost/mp11/list.hpp

@@ -0,0 +1,335 @@
+#ifndef BOOST_MP11_LIST_HPP_INCLUDED
+#define BOOST_MP11_LIST_HPP_INCLUDED
+
+//  Copyright 2015-2017 Peter Dimov.
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/mp11/integral.hpp>
+#include <boost/mp11/detail/mp_list.hpp>
+#include <boost/mp11/detail/mp_is_list.hpp>
+#include <boost/mp11/detail/mp_append.hpp>
+#include <boost/mp11/detail/config.hpp>
+#include <type_traits>
+
+namespace boost
+{
+namespace mp11
+{
+
+// mp_list_c<T, I...>
+template<class T, T... I> using mp_list_c = mp_list<std::integral_constant<T, I>...>;
+
+// mp_is_list<L>
+//   in detail/mp_is_list.hpp
+
+// mp_size<L>
+namespace detail
+{
+
+template<class L> struct mp_size_impl
+{
+// An error "no type named 'type'" here means that the argument to mp_size is not a list
+};
+
+template<template<class...> class L, class... T> struct mp_size_impl<L<T...>>
+{
+    using type = mp_size_t<sizeof...(T)>;
+};
+
+} // namespace detail
+
+template<class L> using mp_size = typename detail::mp_size_impl<L>::type;
+
+// mp_empty<L>
+template<class L> using mp_empty = mp_bool< mp_size<L>::value == 0 >;
+
+// mp_assign<L1, L2>
+namespace detail
+{
+
+template<class L1, class L2> struct mp_assign_impl;
+
+template<template<class...> class L1, class... T, template<class...> class L2, class... U> struct mp_assign_impl<L1<T...>, L2<U...>>
+{
+    using type = L1<U...>;
+};
+
+} // namespace detail
+
+template<class L1, class L2> using mp_assign = typename detail::mp_assign_impl<L1, L2>::type;
+
+// mp_clear<L>
+template<class L> using mp_clear = mp_assign<L, mp_list<>>;
+
+// mp_front<L>
+namespace detail
+{
+
+template<class L> struct mp_front_impl
+{
+// An error "no type named 'type'" here means that the argument to mp_front
+// is either not a list, or is an empty list
+};
+
+template<template<class...> class L, class T1, class... T> struct mp_front_impl<L<T1, T...>>
+{
+    using type = T1;
+};
+
+} // namespace detail
+
+template<class L> using mp_front = typename detail::mp_front_impl<L>::type;
+
+// mp_pop_front<L>
+namespace detail
+{
+
+template<class L> struct mp_pop_front_impl
+{
+// An error "no type named 'type'" here means that the argument to mp_pop_front
+// is either not a list, or is an empty list
+};
+
+template<template<class...> class L, class T1, class... T> struct mp_pop_front_impl<L<T1, T...>>
+{
+    using type = L<T...>;
+};
+
+} // namespace detail
+
+template<class L> using mp_pop_front = typename detail::mp_pop_front_impl<L>::type;
+
+// mp_first<L>
+template<class L> using mp_first = mp_front<L>;
+
+// mp_rest<L>
+template<class L> using mp_rest = mp_pop_front<L>;
+
+// mp_second<L>
+namespace detail
+{
+
+template<class L> struct mp_second_impl
+{
+// An error "no type named 'type'" here means that the argument to mp_second
+// is either not a list, or has fewer than two elements
+};
+
+template<template<class...> class L, class T1, class T2, class... T> struct mp_second_impl<L<T1, T2, T...>>
+{
+    using type = T2;
+};
+
+} // namespace detail
+
+template<class L> using mp_second = typename detail::mp_second_impl<L>::type;
+
+// mp_third<L>
+namespace detail
+{
+
+template<class L> struct mp_third_impl
+{
+// An error "no type named 'type'" here means that the argument to mp_third
+// is either not a list, or has fewer than three elements
+};
+
+template<template<class...> class L, class T1, class T2, class T3, class... T> struct mp_third_impl<L<T1, T2, T3, T...>>
+{
+    using type = T3;
+};
+
+} // namespace detail
+
+template<class L> using mp_third = typename detail::mp_third_impl<L>::type;
+
+// mp_push_front<L, T...>
+namespace detail
+{
+
+template<class L, class... T> struct mp_push_front_impl
+{
+// An error "no type named 'type'" here means that the first argument to mp_push_front is not a list
+};
+
+template<template<class...> class L, class... U, class... T> struct mp_push_front_impl<L<U...>, T...>
+{
+    using type = L<T..., U...>;
+};
+
+} // namespace detail
+
+template<class L, class... T> using mp_push_front = typename detail::mp_push_front_impl<L, T...>::type;
+
+// mp_push_back<L, T...>
+namespace detail
+{
+
+template<class L, class... T> struct mp_push_back_impl
+{
+// An error "no type named 'type'" here means that the first argument to mp_push_back is not a list
+};
+
+template<template<class...> class L, class... U, class... T> struct mp_push_back_impl<L<U...>, T...>
+{
+    using type = L<U..., T...>;
+};
+
+} // namespace detail
+
+template<class L, class... T> using mp_push_back = typename detail::mp_push_back_impl<L, T...>::type;
+
+// mp_rename<L, B>
+namespace detail
+{
+
+template<class A, template<class...> class B> struct mp_rename_impl
+{
+// An error "no type named 'type'" here means that the first argument to mp_rename is not a list
+};
+
+template<template<class...> class A, class... T, template<class...> class B> struct mp_rename_impl<A<T...>, B>
+{
+    using type = B<T...>;
+};
+
+} // namespace detail
+
+template<class A, template<class...> class B> using mp_rename = typename detail::mp_rename_impl<A, B>::type;
+
+template<template<class...> class F, class L> using mp_apply = typename detail::mp_rename_impl<L, F>::type;
+
+template<class Q, class L> using mp_apply_q = typename detail::mp_rename_impl<L, Q::template fn>::type;
+
+// mp_replace_front<L, T>
+namespace detail
+{
+
+template<class L, class T> struct mp_replace_front_impl
+{
+// An error "no type named 'type'" here means that the first argument to mp_replace_front
+// is either not a list, or is an empty list
+};
+
+template<template<class...> class L, class U1, class... U, class T> struct mp_replace_front_impl<L<U1, U...>, T>
+{
+    using type = L<T, U...>;
+};
+
+} // namespace detail
+
+template<class L, class T> using mp_replace_front = typename detail::mp_replace_front_impl<L, T>::type;
+
+// mp_replace_first<L, T>
+template<class L, class T> using mp_replace_first = typename detail::mp_replace_front_impl<L, T>::type;
+
+// mp_replace_second<L, T>
+namespace detail
+{
+
+template<class L, class T> struct mp_replace_second_impl
+{
+// An error "no type named 'type'" here means that the first argument to mp_replace_second
+// is either not a list, or has fewer than two elements
+};
+
+template<template<class...> class L, class U1, class U2, class... U, class T> struct mp_replace_second_impl<L<U1, U2, U...>, T>
+{
+    using type = L<U1, T, U...>;
+};
+
+} // namespace detail
+
+template<class L, class T> using mp_replace_second = typename detail::mp_replace_second_impl<L, T>::type;
+
+// mp_replace_third<L, T>
+namespace detail
+{
+
+template<class L, class T> struct mp_replace_third_impl
+{
+// An error "no type named 'type'" here means that the first argument to mp_replace_third
+// is either not a list, or has fewer than three elements
+};
+
+template<template<class...> class L, class U1, class U2, class U3, class... U, class T> struct mp_replace_third_impl<L<U1, U2, U3, U...>, T>
+{
+    using type = L<U1, U2, T, U...>;
+};
+
+} // namespace detail
+
+template<class L, class T> using mp_replace_third = typename detail::mp_replace_third_impl<L, T>::type;
+
+// mp_transform_front<L, F>
+namespace detail
+{
+
+template<class L, template<class...> class F> struct mp_transform_front_impl
+{
+// An error "no type named 'type'" here means that the first argument to mp_transform_front
+// is either not a list, or is an empty list
+};
+
+template<template<class...> class L, class U1, class... U, template<class...> class F> struct mp_transform_front_impl<L<U1, U...>, F>
+{
+    using type = L<F<U1>, U...>;
+};
+
+} // namespace detail
+
+template<class L, template<class...> class F> using mp_transform_front = typename detail::mp_transform_front_impl<L, F>::type;
+template<class L, class Q> using mp_transform_front_q = mp_transform_front<L, Q::template fn>;
+
+// mp_transform_first<L, F>
+template<class L, template<class...> class F> using mp_transform_first = typename detail::mp_transform_front_impl<L, F>::type;
+template<class L, class Q> using mp_transform_first_q = mp_transform_first<L, Q::template fn>;
+
+// mp_transform_second<L, F>
+namespace detail
+{
+
+template<class L, template<class...> class F> struct mp_transform_second_impl
+{
+// An error "no type named 'type'" here means that the first argument to mp_transform_second
+// is either not a list, or has fewer than two elements
+};
+
+template<template<class...> class L, class U1, class U2, class... U, template<class...> class F> struct mp_transform_second_impl<L<U1, U2, U...>, F>
+{
+    using type = L<U1, F<U2>, U...>;
+};
+
+} // namespace detail
+
+template<class L, template<class...> class F> using mp_transform_second = typename detail::mp_transform_second_impl<L, F>::type;
+template<class L, class Q> using mp_transform_second_q = mp_transform_second<L, Q::template fn>;
+
+// mp_transform_third<L, F>
+namespace detail
+{
+
+template<class L, template<class...> class F> struct mp_transform_third_impl
+{
+// An error "no type named 'type'" here means that the first argument to mp_transform_third
+// is either not a list, or has fewer than three elements
+};
+
+template<template<class...> class L, class U1, class U2, class U3, class... U, template<class...> class F> struct mp_transform_third_impl<L<U1, U2, U3, U...>, F>
+{
+    using type = L<U1, U2, F<U3>, U...>;
+};
+
+} // namespace detail
+
+template<class L, template<class...> class F> using mp_transform_third = typename detail::mp_transform_third_impl<L, F>::type;
+template<class L, class Q> using mp_transform_third_q = mp_transform_third<L, Q::template fn>;
+
+} // namespace mp11
+} // namespace boost
+
+#endif // #ifndef BOOST_MP11_LIST_HPP_INCLUDED