Sprout/sprout/cwchar/wmemchr.hpp
2013-01-12 04:08:44 +09:00

55 lines
1.2 KiB
C++

#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
//
inline SPROUT_CONSTEXPR wchar_t const*
wmemchr(wchar_t const* s, wchar_t c, size_t n) {
return sprout::detail::wmemchr_impl(
sprout::as_iterator_base(
sprout::find(
sprout::as_iterator(s), sprout::as_iterator(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::as_iterator_base(
sprout::find(
sprout::as_iterator(s), sprout::as_iterator(s, n),
c
)
),
s + n
);
}
} // namespace sprout
#endif // #ifndef SPROUT_CWCHAR_WMEMCHR_HPP