Sprout/sprout/operation/fixed/append.hpp
2014-01-08 16:48:12 +09:00

101 lines
3.5 KiB
C++

/*=============================================================================
Copyright (c) 2011-2014 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
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)
=============================================================================*/
#ifndef SPROUT_OPERATION_FIXED_APPEND_HPP
#define SPROUT_OPERATION_FIXED_APPEND_HPP
#include <sprout/config.hpp>
#include <sprout/index_tuple/metafunction.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/container/indexes.hpp>
#include <sprout/iterator/operation.hpp>
namespace sprout {
namespace fixed {
namespace results {
//
// append
//
template<typename Container, typename Input>
struct append
: public sprout::container_transform_traits<
Container
>::template rebind_size<
sprout::container_traits<Container>::static_size + sprout::container_traits<Input>::static_size
>
{};
} // namespace results
namespace detail {
template<typename Result, typename Container, typename Input, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR Result
append_impl(
Container const& cont, sprout::index_tuple<Indexes...>,
typename sprout::container_traits<Container>::difference_type pos,
typename sprout::container_traits<Container>::difference_type size,
Input const& input
)
{
return sprout::remake<Result>(
cont,
sprout::size(cont) + sprout::size(input),
(Indexes < sprout::container_traits<Container>::static_size + size
? (Indexes < pos
? *sprout::next(sprout::internal_begin(cont), Indexes)
: Indexes < pos + size
? *sprout::next(sprout::begin(input), Indexes - pos)
: *sprout::next(sprout::internal_begin(cont), Indexes - size)
)
: typename sprout::container_traits<Result>::value_type()
)...
);
}
} // namespace detail
//
// append
//
template<typename Container, typename Input>
inline SPROUT_CONSTEXPR typename sprout::fixed::results::append<Container, Input>::type
append(
Container const& cont, typename sprout::container_traits<Container>::const_iterator pos,
Input const& input
)
{
return sprout::fixed::detail::append_impl<typename sprout::fixed::results::append<Container, Input>::type>(
cont,
sprout::container_indexes<typename sprout::fixed::results::append<Container, Input>::type>::make(),
sprout::distance(sprout::internal_begin(cont), pos),
sprout::size(input),
input
);
}
template<typename Container, typename Input>
inline SPROUT_CONSTEXPR typename sprout::fixed::results::append<Container, Input>::type
append(
Container const& cont, typename sprout::container_traits<Container>::difference_type pos,
Input const& input
)
{
return sprout::fixed::detail::append_impl<typename sprout::fixed::results::append<Container, Input>::type>(
cont,
sprout::container_indexes<typename sprout::fixed::results::append<Container, Input>::type>::make(),
sprout::distance(sprout::internal_begin(cont), sprout::next(sprout::begin(cont), pos)),
sprout::size(input),
input
);
}
} // namespace fixed
namespace results {
using sprout::fixed::results::append;
} // namespace results
using sprout::fixed::append;
} // namespace sprout
#endif // #ifndef SPROUT_OPERATION_FIXED_APPEND_HPP