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Avoid calling iswalnum for ascii characters
iswalnum can be pretty expensive as its a shared library call.
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@ -60,12 +60,23 @@ inline bool is_blank(Codepoint c) noexcept
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is_horizontal_blank(c) ;
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}
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inline bool is_basic_alpha(Codepoint c) noexcept
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{
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return (c >= 'a' and c <= 'z') or (c >= 'A' and c <= 'Z');
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}
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inline bool is_basic_digit(Codepoint c) noexcept
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{
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return c >= '0' and c <= '9';
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}
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enum WordType { Word, WORD };
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template<WordType word_type = Word>
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inline bool is_word(Codepoint c, ConstArrayView<Codepoint> extra_word_chars = {'_'}) noexcept
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{
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return iswalnum((wchar_t)c) or contains(extra_word_chars, c);
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return (c < 128 ? is_basic_alpha(c) or is_basic_digit(c) : iswalnum((wchar_t)c)) or
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contains(extra_word_chars, c);
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}
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template<>
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@ -79,16 +90,6 @@ inline bool is_punctuation(Codepoint c, ConstArrayView<Codepoint> extra_word_cha
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return not (is_word(c, extra_word_chars) or is_blank(c));
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}
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inline bool is_basic_alpha(Codepoint c) noexcept
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{
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return (c >= 'a' and c <= 'z') or (c >= 'A' and c <= 'Z');
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}
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inline bool is_basic_digit(Codepoint c) noexcept
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{
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return c >= '0' and c <= '9';
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}
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inline bool is_identifier(Codepoint c) noexcept
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{
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return is_basic_alpha(c) or is_basic_digit(c) or
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