mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
65 lines
1.6 KiB
C++
65 lines
1.6 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_CWCHAR_WMEMCHR_HPP
|
|
#define SPROUT_CWCHAR_WMEMCHR_HPP
|
|
|
|
#include <cstddef>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/iterator/ptr_index_iterator.hpp>
|
|
#include <sprout/algorithm/find.hpp>
|
|
|
|
namespace sprout {
|
|
namespace detail {
|
|
inline SPROUT_CONSTEXPR wchar_t const*
|
|
wmemchr_impl(wchar_t const* found, wchar_t const* last) {
|
|
return found == last ? nullptr
|
|
: found
|
|
;
|
|
}
|
|
inline SPROUT_CONSTEXPR wchar_t*
|
|
wmemchr_impl(wchar_t* found, wchar_t* last) {
|
|
return found == last ? nullptr
|
|
: found
|
|
;
|
|
}
|
|
} // namespace detail
|
|
|
|
//
|
|
// wmemchr
|
|
//
|
|
// recursion depth:
|
|
// O(log N)
|
|
//
|
|
inline SPROUT_CONSTEXPR wchar_t const*
|
|
wmemchr(wchar_t const* s, wchar_t c, size_t n) {
|
|
return sprout::detail::wmemchr_impl(
|
|
sprout::ptr_unindex(
|
|
sprout::find(
|
|
sprout::ptr_index(s), sprout::ptr_index(s, n),
|
|
c
|
|
)
|
|
),
|
|
s + n
|
|
);
|
|
}
|
|
|
|
inline SPROUT_CONSTEXPR wchar_t*
|
|
wmemchr(wchar_t* s, wchar_t c, size_t n) {
|
|
return sprout::detail::wmemchr_impl(
|
|
sprout::ptr_unindex(
|
|
sprout::find(
|
|
sprout::ptr_index(s), sprout::ptr_index(s, n),
|
|
c
|
|
)
|
|
),
|
|
s + n
|
|
);
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_CWCHAR_WMEMCHR_HPP
|