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Add mp_copy_if, mp_remove_if, mp_partition, mp_sort.

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This commit is contained in:
Peter Dimov
2015-06-24 16:05:47 +03:00
parent 05ab3e7a42
commit baaead6860
6 changed files with 352 additions and 4 deletions
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147
include/boost/mp11/algorithm.hpp
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@@ -354,17 +354,156 @@ template<class L, template<class...> class P, class W> struct mp_replace_if_impl
template<class L, template<class...> class P, class W> using mp_replace_if = typename detail::mp_replace_if_impl<L, P, W>::type;
// mp_copy_if<L, P>
namespace detail
{
template<class L, template<class...> class P> struct mp_copy_if_impl;
#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1800 )
template<template<class...> class L, class... T, template<class...> class P> struct mp_copy_if_impl<L<T...>, P>
{
static_assert( sizeof...(T) == 0, "T... must be empty" );
using type = L<>;
};
#else
template<template<class...> class L, template<class...> class P> struct mp_copy_if_impl<L<>, P>
{
using type = L<>;
};
#endif
template<template<class...> class L, class T1, class... T, template<class...> class P> struct mp_copy_if_impl<L<T1, T...>, P>
{
using rest = typename mp_copy_if_impl<L<T...>, P>::type;
using type = mp_if<P<T1>, mp_push_front<rest, T1>, rest>;
};
} // namespace detail
template<class L, template<class...> class P> using mp_copy_if = typename detail::mp_copy_if_impl<L, P>::type;
// mp_remove_if<L, P>
namespace detail
{
template<class L, template<class...> class P> struct mp_remove_if_impl;
#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1800 )
template<template<class...> class L, class... T, template<class...> class P> struct mp_remove_if_impl<L<T...>, P>
{
static_assert( sizeof...(T) == 0, "T... must be empty" );
using type = L<>;
};
#else
template<template<class...> class L, template<class...> class P> struct mp_remove_if_impl<L<>, P>
{
using type = L<>;
};
#endif
template<template<class...> class L, class T1, class... T, template<class...> class P> struct mp_remove_if_impl<L<T1, T...>, P>
{
using rest = typename mp_remove_if_impl<L<T...>, P>::type;
using type = mp_if<P<T1>, rest, mp_push_front<rest, T1>>;
};
} // namespace detail
template<class L, template<class...> class P> using mp_remove_if = typename detail::mp_remove_if_impl<L, P>::type;
// mp_partition<L, P>
namespace detail
{
template<class L, template<class...> class P> struct mp_partition_impl;
#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1800 )
template<template<class...> class L, class... T, template<class...> class P> struct mp_partition_impl<L<T...>, P>
{
static_assert( sizeof...(T) == 0, "T... must be empty" );
using type = L<L<>, L<>>;
};
#else
template<template<class...> class L, template<class...> class P> struct mp_partition_impl<L<>, P>
{
using type = L<L<>, L<>>;
};
#endif
template<template<class...> class L, class T1, class... T, template<class...> class P> struct mp_partition_impl<L<T1, T...>, P>
{
using rest = typename mp_partition_impl<L<T...>, P>::type;
using type = mp_if<P<T1>, L<mp_push_front<mp_first<rest>, T1>, mp_second<rest>>, L<mp_first<rest>, mp_push_front<mp_second<rest>, T1>>>;
};
} // namespace detail
template<class L, template<class...> class P> using mp_partition = typename detail::mp_partition_impl<L, P>::type;
// mp_sort<L, P>
namespace detail
{
template<class L, template<class...> class P> struct mp_sort_impl;
#if defined( BOOST_MSVC ) && BOOST_WORKAROUND( BOOST_MSVC, <= 1800 )
template<template<class...> class L, class... T, template<class...> class P> struct mp_sort_impl<L<T...>, P>
{
static_assert( sizeof...(T) == 0, "T... must be empty" );
using type = L<>;
};
#else
template<template<class...> class L, template<class...> class P> struct mp_sort_impl<L<>, P>
{
using type = L<>;
};
#endif
template<template<class...> class L, class T1, template<class...> class P> struct mp_sort_impl<L<T1>, P>
{
using type = L<T1>;
};
template<template<class...> class L, class T1, class... T, template<class...> class P> struct mp_sort_impl<L<T1, T...>, P>
{
template<class U> using F = P<U, T1>;
using part = mp_partition<L<T...>, F>;
using S1 = typename mp_sort_impl<mp_first<part>, P>::type;
using S2 = typename mp_sort_impl<mp_second<part>, P>::type;
using type = mp_append<mp_push_back<S1, T1>, S2>;
};
} // namespace detail
template<class L, template<class...> class P> using mp_sort = typename detail::mp_sort_impl<L, P>::type;
// mp_find<L, V>
// mp_find_if<L, P>
// mp_find_index<L, V>
// mp_find_index_if<L, P>
// mp_reverse<L>
// mp_copy_if<L, P>
// mp_remove_if<L, P>
// mp_fold<L, V, F>
// mp_reverse_fold<L, V, F>
// mp_partition<L, P>
// mp_sort<L>
} // namespace boost