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Add mp_set_contains, mp_set_push_back, mp_set_push_front.

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Peter Dimov
2015-07-24 13:19:17 +03:00
parent 5de3bf8810
commit 26575249ff
5 changed files with 398 additions and 1 deletions
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63
include/boost/mp11/set.hpp
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@@ -8,12 +8,73 @@
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/utility.hpp>
#include <type_traits>
namespace boost
{
// mp_set_contains<S, T>
// mp_set_contains<S, V>
namespace detail
{
template<class S, class V> struct mp_set_contains_impl;
template<template<class...> class L, class... T, class V> struct mp_set_contains_impl<L<T...>, V>
{
using type = mp_to_bool<std::is_base_of<mp_identity<V>, mp_inherit<mp_identity<T>...>>>;
};
} // namespace detail
template<class S, class V> using mp_set_contains = typename detail::mp_set_contains_impl<S, V>::type;
// mp_set_push_back<S, T...>
namespace detail
{
template<class S, class... T> struct mp_set_push_back_impl;
template<template<class...> class L, class... U> struct mp_set_push_back_impl<L<U...>>
{
using type = L<U...>;
};
template<template<class...> class L, class... U, class T1, class... T> struct mp_set_push_back_impl<L<U...>, T1, T...>
{
using S = mp_if<mp_set_contains<L<U...>, T1>, L<U...>, L<U..., T1>>;
using type = typename mp_set_push_back_impl<S, T...>::type;
};
} // namespace detail
template<class S, class... T> using mp_set_push_back = typename detail::mp_set_push_back_impl<S, T...>::type;
// mp_set_push_front<S, T...>
namespace detail
{
template<class S, class... T> struct mp_set_push_front_impl;
template<template<class...> class L, class... U> struct mp_set_push_front_impl<L<U...>>
{
using type = L<U...>;
};
template<template<class...> class L, class... U, class T1> struct mp_set_push_front_impl<L<U...>, T1>
{
using type = mp_if<mp_set_contains<L<U...>, T1>, L<U...>, L<T1, U...>>;
};
template<template<class...> class L, class... U, class T1, class... T> struct mp_set_push_front_impl<L<U...>, T1, T...>
{
using S = typename mp_set_push_front_impl<L<U...>, T...>::type;
using type = typename mp_set_push_front_impl<S, T1>::type;
};
} // namespace detail
template<class S, class... T> using mp_set_push_front = typename detail::mp_set_push_front_impl<S, T...>::type;
} // namespace boost