Sprout/sprout/string/detail/compare.hpp
2015-01-10 19:13:57 +09:00

43 lines
1.4 KiB
C++

/*=============================================================================
Copyright (c) 2011-2015 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_STRING_DETAIL_COMPARE_HPP
#define SPROUT_STRING_DETAIL_COMPARE_HPP
#include <sprout/config.hpp>
#include HDR_ALGORITHM_MIN_MAX_SSCRISK_CEL_OR_SPROUT
namespace sprout {
namespace string_detail {
template<typename String>
static SPROUT_CONSTEXPR int
compare_impl_1(
int compared, typename String::size_type n1, typename String::size_type n2
)
{
return compared != 0 ? compared
: n1 < n2 ? -1
: n2 < n1 ? 1
: 0
;
}
template<typename String, typename ConstIterator>
static SPROUT_CONSTEXPR int
compare_impl(
typename String::const_iterator data, typename String::size_type pos1, typename String::size_type n1,
ConstIterator s, typename String::size_type n2
)
{
return sprout::string_detail::compare_impl_1<String>(
String::traits_type::compare(data + pos1, s, NS_SSCRISK_CEL_OR_SPROUT::min(n1, n2)),
n1, n2
);
}
} // namespace string_detail
} // namespace sprout
#endif // #ifndef SPROUT_STRING_DETAIL_COMPARE_HPP