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add <cstring> and <cwchar> compatible constexpr functions

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This commit is contained in:
bolero-MURAKAMI 2014-04-23 01:27:03 +09:00
parent fe255a5e74
commit b04dea6002
26 changed files with 526 additions and 103 deletions
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39
sprout/cwchar/wmemchr.hpp
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@ -8,27 +8,10 @@
#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>
#include <sprout/cstring/memchr.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
//
@ -37,28 +20,12 @@ namespace sprout {
//
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
);
return sprout::detail::memchr(s, c, 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
);
return sprout::detail::memchr(s, c, n);
}
} // namespace sprout