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-rw-r--r--nihil.util/ctype.ccm72
1 files changed, 0 insertions, 72 deletions
diff --git a/nihil.util/ctype.ccm b/nihil.util/ctype.ccm
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--- a/nihil.util/ctype.ccm
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-// This source code is released into the public domain.
-export module nihil.util:ctype;
-
-import nihil.std;
-
-namespace nihil {
-
-/*
- * ctype_is: wrap std::ctype<T>::is() in a form suitable for use as an algorithm
- * predicate, i.e., ctype_is(m) will return a functor object that takes any char
- * type as an argument and returns bool.
- *
- * If the locale is not specified, the current global locale is used by default.
- *
- * ctype_is copies the locale, so passing a temporary is fine.
- */
-
-export struct ctype_is final
-{
- explicit ctype_is(std::ctype_base::mask mask_,
- std::locale const &locale_ = std::locale()) noexcept
- : m_mask(mask_)
- , m_locale(locale_)
- {
- }
-
- [[nodiscard]] auto operator()(this ctype_is const &self, std::integral auto c)
- {
- using ctype = std::ctype<decltype(c)>;
- auto &facet = std::use_facet<ctype>(self.m_locale);
- return facet.is(self.m_mask, c);
- }
-
-private:
- std::ctype_base::mask m_mask;
- std::locale m_locale;
-};
-
-// Predefined tests for the current global locale.
-
-export inline auto is_space = ctype_is(std::ctype_base::space);
-export inline auto is_print = ctype_is(std::ctype_base::print);
-export inline auto is_cntrl = ctype_is(std::ctype_base::cntrl);
-export inline auto is_upper = ctype_is(std::ctype_base::upper);
-export inline auto is_lower = ctype_is(std::ctype_base::lower);
-export inline auto is_alpha = ctype_is(std::ctype_base::alpha);
-export inline auto is_digit = ctype_is(std::ctype_base::digit);
-export inline auto is_punct = ctype_is(std::ctype_base::punct);
-export inline auto is_xdigit = ctype_is(std::ctype_base::xdigit);
-export inline auto is_blank = ctype_is(std::ctype_base::blank);
-export inline auto is_alnum = ctype_is(std::ctype_base::alnum);
-export inline auto is_graph = ctype_is(std::ctype_base::graph);
-
-// Predefined tests for the C locale. The C locale is guaranteed to always be
-// available, so this doesn't create lifetime issues.
-
-//NOLINTBEGIN: Technically, std::locale::classic() can throw. Assume it doesn't.
-export inline auto is_c_space = ctype_is(std::ctype_base::space, std::locale::classic());
-export inline auto is_c_print = ctype_is(std::ctype_base::print, std::locale::classic());
-export inline auto is_c_cntrl = ctype_is(std::ctype_base::cntrl, std::locale::classic());
-export inline auto is_c_upper = ctype_is(std::ctype_base::upper, std::locale::classic());
-export inline auto is_c_lower = ctype_is(std::ctype_base::lower, std::locale::classic());
-export inline auto is_c_alpha = ctype_is(std::ctype_base::alpha, std::locale::classic());
-export inline auto is_c_digit = ctype_is(std::ctype_base::digit, std::locale::classic());
-export inline auto is_c_punct = ctype_is(std::ctype_base::punct, std::locale::classic());
-export inline auto is_c_xdigit = ctype_is(std::ctype_base::xdigit, std::locale::classic());
-export inline auto is_c_blank = ctype_is(std::ctype_base::blank, std::locale::classic());
-export inline auto is_c_alnum = ctype_is(std::ctype_base::alnum, std::locale::classic());
-export inline auto is_c_graph = ctype_is(std::ctype_base::graph, std::locale::classic());
-//NOLINTEND
-
-} // namespace nihil