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bolero-MURAKAMI 2011-09-01 02:48:32 +00:00
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sprout/algorithm/fixed/remove_copy.hpp Normal file
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#ifndef SPROUT_ALGORITHM_FIXED_REMOVE_COPY_HPP
#define SPROUT_ALGORITHM_FIXED_REMOVE_COPY_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/fixed_container/traits.hpp>
#include <sprout/fixed_container/functions.hpp>
namespace sprout {
namespace fixed {
namespace detail {
template<typename Result, typename... Args>
SPROUT_CONSTEXPR inline typename std::enable_if<
sprout::fixed_container_traits<Result>::fixed_size == sizeof...(Args),
typename sprout::fixed_container_traits<Result>::fixed_container_type
>::type remove_copy_impl_3(
Result const& result,
Args const&... args
)
{
return typename sprout::fixed_container_traits<Result>::fixed_container_type{args...};
}
template<typename Result, typename... Args>
SPROUT_CONSTEXPR inline typename std::enable_if<
sprout::fixed_container_traits<Result>::fixed_size != sizeof...(Args),
typename sprout::fixed_container_traits<Result>::fixed_container_type
>::type remove_copy_impl_3(
Result const& result,
Args const&... args
)
{
return remove_copy_impl_3(result, args..., *(sprout::fixed_begin(result) + sizeof...(Args)));
}
template<typename Iterator, typename Result, typename T, typename... Args>
SPROUT_CONSTEXPR inline typename std::enable_if<
sprout::fixed_container_traits<Result>::fixed_size == sizeof...(Args),
typename sprout::fixed_container_traits<Result>::fixed_container_type
>::type remove_copy_impl_2(
Iterator first,
Iterator last,
Result const& result,
T const& value,
typename sprout::fixed_container_traits<Result>::difference_type offset,
Args const&... args
)
{
return typename sprout::fixed_container_traits<Result>::fixed_container_type{args...};
}
template<typename Iterator, typename Result, typename T, typename... Args>
SPROUT_CONSTEXPR inline typename std::enable_if<
sprout::fixed_container_traits<Result>::fixed_size != sizeof...(Args),
typename sprout::fixed_container_traits<Result>::fixed_container_type
>::type remove_copy_impl_2(
Iterator first,
Iterator last,
Result const& result,
T const& value,
typename sprout::fixed_container_traits<Result>::difference_type offset,
Args const&... args
)
{
return first != last && sizeof...(Args) < offset
? *first == value
? remove_copy_impl_2(first + 1, last, result, value, offset, args...)
: remove_copy_impl_2(first + 1, last, result, value, offset, args..., *first)
: remove_copy_impl_3(result, args...)
;
}
template<typename Iterator, typename Result, typename T, typename... Args>
SPROUT_CONSTEXPR inline typename std::enable_if<
sprout::fixed_container_traits<Result>::fixed_size == sizeof...(Args),
typename sprout::fixed_container_traits<Result>::fixed_container_type
>::type remove_copy_impl_1(
Iterator first,
Iterator last,
Result const& result,
T const& value,
typename sprout::fixed_container_traits<Result>::difference_type offset,
Args const&... args
)
{
return typename sprout::fixed_container_traits<Result>::fixed_container_type{args...};
}
template<typename Iterator, typename Result, typename T, typename... Args>
SPROUT_CONSTEXPR inline typename std::enable_if<
sprout::fixed_container_traits<Result>::fixed_size != sizeof...(Args),
typename sprout::fixed_container_traits<Result>::fixed_container_type
>::type remove_copy_impl_1(
Iterator first,
Iterator last,
Result const& result,
T const& value,
typename sprout::fixed_container_traits<Result>::difference_type offset,
Args const&... args
)
{
return sizeof...(Args) < offset
? remove_copy_impl_1(first, last, result, value, offset, args..., *(sprout::fixed_begin(result) + sizeof...(Args)))
: remove_copy_impl_2(first, last, result, value, offset + sprout::size(result), args...)
;
}
template<typename Iterator, typename Result, typename T>
SPROUT_CONSTEXPR inline typename sprout::fixed_container_traits<Result>::fixed_container_type remove_copy_impl(
Iterator first,
Iterator last,
Result const& result,
T const& value
)
{
return remove_copy_impl_1(first, last, result, value, sprout::fixed_begin_offset(result));
}
} // namespace detail
//
// remove_copy
//
template<typename Iterator, typename Result, typename T>
SPROUT_CONSTEXPR inline typename sprout::fixed_container_traits<Result>::fixed_container_type remove_copy(
Iterator first,
Iterator last,
Result const& result,
T const& value
)
{
return sprout::fixed::detail::remove_copy_impl(first, last, result, value);
}
} // namespace fixed
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_FIXED_REMOVE_COPY_HPP