Unicode codepoint flags for custom regexs (#7245)
* Replace CODEPOINT_TYPE_* with codepoint_flags * Update and bugfix brute force random test * Deterministic brute force random test * Unicode normalization NFD * Get rid of BOM
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7 changed files with 7299 additions and 2409 deletions
56
unicode.h
56
unicode.h
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@ -4,24 +4,56 @@
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#include <string>
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#include <vector>
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#define CODEPOINT_TYPE_UNIDENTIFIED 0
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#define CODEPOINT_TYPE_NUMBER 1
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#define CODEPOINT_TYPE_LETTER 2
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#define CODEPOINT_TYPE_SEPARATOR 3
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#define CODEPOINT_TYPE_ACCENT_MARK 4
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#define CODEPOINT_TYPE_PUNCTUATION 5
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#define CODEPOINT_TYPE_SYMBOL 6
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#define CODEPOINT_TYPE_CONTROL 7
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struct codepoint_flags {
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enum {
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UNDEFINED = 0x0001,
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NUMBER = 0x0002, // regex: \p{N}
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LETTER = 0x0004, // regex: \p{L}
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SEPARATOR = 0x0008, // regex: \p{Z}
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ACCENT_MARK = 0x0010, // regex: \p{M}
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PUNCTUATION = 0x0020, // regex: \p{P}
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SYMBOL = 0x0040, // regex: \p{S}
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CONTROL = 0x0080, // regex: \p{C}
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MASK_CATEGORIES = 0x00FF,
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};
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// codepoint type
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uint16_t is_undefined : 1;
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uint16_t is_number : 1; // regex: \p{N}
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uint16_t is_letter : 1; // regex: \p{L}
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uint16_t is_separator : 1; // regex: \p{Z}
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uint16_t is_accent_mark : 1; // regex: \p{M}
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uint16_t is_punctuation : 1; // regex: \p{P}
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uint16_t is_symbol : 1; // regex: \p{S}
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uint16_t is_control : 1; // regex: \p{C}
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// helper flags
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uint16_t is_whitespace : 1; // regex: \s
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uint16_t is_lowercase : 1;
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uint16_t is_uppercase : 1;
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uint16_t is_nfd : 1;
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// decode from uint16
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inline codepoint_flags(const uint16_t flags=0) {
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*reinterpret_cast<uint16_t*>(this) = flags;
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}
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inline uint16_t as_uint() const {
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return *reinterpret_cast<const uint16_t*>(this);
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}
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inline uint16_t category_flag() const {
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return this->as_uint() & MASK_CATEGORIES;
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}
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};
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std::string unicode_cpt_to_utf8(uint32_t cp);
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std::vector<uint32_t> unicode_cpts_from_utf8(const std::string & utf8);
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std::vector<uint32_t> unicode_cpts_normalize_nfd(const std::vector<uint32_t> & cpts);
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int unicode_cpt_type(uint32_t cp);
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int unicode_cpt_type(const std::string & utf8);
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bool unicode_cpt_is_whitespace(uint32_t cp);
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codepoint_flags unicode_cpt_flags(const uint32_t cp);
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codepoint_flags unicode_cpt_flags(const std::string & utf8);
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std::string unicode_byte_to_utf8(uint8_t byte);
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uint8_t unicode_utf8_to_byte(const std::string & utf8);
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