--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/training/unicharset/validate_myanmar.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,46 @@
+#ifndef TESSERACT_TRAINING_VALIDATE_MYANMAR_H_
+#define TESSERACT_TRAINING_VALIDATE_MYANMAR_H_
+
+#include "validator.h"
+
+namespace tesseract {
+
+// Subclass of Validator that validates and segments Myanmar.
+class ValidateMyanmar : public Validator {
+public:
+  ValidateMyanmar(ViramaScript script, bool report_errors) : Validator(script, report_errors) {}
+  ~ValidateMyanmar() override = default;
+
+protected:
+  // Returns whether codes matches the pattern for a Myanmar Grapheme.
+  // Consumes the next Grapheme in codes_[codes_used_++...] and copies it to
+  // parts_ and output_. Returns true if a valid Grapheme was consumed,
+  // otherwise does not increment codes_used_.
+  bool ConsumeGraphemeIfValid() override;
+  // Returns the CharClass corresponding to the given Unicode ch.
+  Validator::CharClass UnicodeToCharClass(char32 ch) const override;
+
+private:
+  // Helper consumes/copies a virama and any subscript consonant.
+  // Returns true if the end of input is reached.
+  bool ConsumeSubscriptIfPresent();
+  // Helper consumes/copies a series of optional signs.
+  // Returns true if the end of input is reached.
+  bool ConsumeOptionalSignsIfPresent();
+  // Returns true if the unicode is a Myanmar "letter" including consonants
+  // and independent vowels. Although table 16-3 distinguishes between some
+  // base consonants and vowels, the extensions make no such distinction, so we
+  // put them all into a single bucket.
+  static bool IsMyanmarLetter(char32 ch);
+  // Returns true if ch is a Myanmar digit or other symbol that does not take
+  // part in being a syllable.
+  static bool IsMyanmarOther(char32 ch);
+
+  // Some special unicodes used only for Myanmar processing.
+  static const char32 kMyanmarAsat = 0x103a;
+  static const char32 kMyanmarMedialYa = 0x103b;
+};
+
+} // namespace tesseract
+
+#endif // TESSERACT_TRAINING_VALIDATE_MYANMAR_H_