Remove Simple Text Path

third_party/WebKit/Source/platform/text/Character.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 90 matching lines @@
 // Takes a flattened list of closed intervals
 template <class T, size_t size>
 bool valueInIntervalList(const T (&intervalList)[size], const T& value) {
   const T* bound =
       std::upper_bound(&intervalList[0], &intervalList[size], value);
   if ((bound - intervalList) % 2 == 1)
     return true;
   return bound > intervalList && *(bound - 1) == value;
 }
 
-CodePath Character::characterRangeCodePath(const UChar* characters,
-                                           unsigned len) {
-  static const UChar complexCodePathRanges[] = {
-      // U+02E5 through U+02E9 (Modifier Letters : Tone letters)
-      0x2E5, 0x2E9,
-      // U+0300 through U+036F Combining diacritical marks
-      0x300, 0x36F,
-      // U+0591 through U+05CF excluding U+05BE Hebrew combining marks, ...
-      0x0591, 0x05BD,
-      // ... Hebrew punctuation Paseq, Sof Pasuq and Nun Hafukha
-      0x05BF, 0x05CF,
-      // U+0600 through U+109F Arabic, Syriac, Thaana, NKo, Samaritan, Mandaic,
-      // Devanagari, Bengali, Gurmukhi, Gujarati, Oriya, Tamil, Telugu, Kannada,
-      // Malayalam, Sinhala, Thai, Lao, Tibetan, Myanmar
-      0x0600, 0x109F,
-      // U+1100 through U+11FF Hangul Jamo (only Ancient Korean should be left
-      // here if you precompose; Modern Korean will be precomposed as a result
-      // of step A)
-      0x1100, 0x11FF,
-      // U+135D through U+135F Ethiopic combining marks
-      0x135D, 0x135F,
-      // U+1780 through U+18AF Tagalog, Hanunoo, Buhid, Taghanwa, Khmer,
-      // Mongolian
-      0x1700, 0x18AF,
-      // U+1900 through U+194F Limbu (Unicode 4.0)
-      0x1900, 0x194F,
-      // U+1980 through U+19DF New Tai Lue
-      0x1980, 0x19DF,
-      // U+1A00 through U+1CFF Buginese, Tai Tham, Balinese, Batak, Lepcha,
-      // Vedic
-      0x1A00, 0x1CFF,
-      // U+1DC0 through U+1DFF Comining diacritical mark supplement
-      0x1DC0, 0x1DFF,
-      // U+20D0 through U+20FF Combining marks for symbols
-      0x20D0, 0x20FF,
-      // U+2CEF through U+2CF1 Combining marks for Coptic
-      0x2CEF, 0x2CF1,
-      // U+302A through U+302F Ideographic and Hangul Tone marks
-      0x302A, 0x302F,
-      // Combining Katakana-Hiragana Voiced/Semi-voiced Sound Mark
-      0x3099, 0x309A,
-      // U+A67C through U+A67D Combining marks for old Cyrillic
-      0xA67C, 0xA67D,
-      // U+A6F0 through U+A6F1 Combining mark for Bamum
-      0xA6F0, 0xA6F1,
-      // U+A800 through U+ABFF Nagri, Phags-pa, Saurashtra, Devanagari Extended,
-      // Hangul Jamo Ext. A, Javanese, Myanmar Extended A, Tai Viet,
-      // Meetei Mayek
-      0xA800, 0xABFF,
-      // U+D7B0 through U+D7FF Hangul Jamo Ext. B
-      0xD7B0, 0xD7FF,
-      // U+E000..U+F8FF BMP Private Use Area
-      0xE000, 0xF8FF,
-      // U+FE00 through U+FE0F Unicode variation selectors
-      0xFE00, 0xFE0F,
-      // U+FE20 through U+FE2F Combining half marks
-      0xFE20, 0xFE2F};
-
-  CodePath result = SimplePath;
-  for (unsigned i = 0; i < len; i++) {
-    const UChar c = characters[i];
-
-    // Shortcut for common case
-    if (c < 0x2E5)
-      continue;
-
-    // Surrogate pairs
-    if (c > 0xD7FF && c <= 0xDBFF) {
-      if (i == len - 1)
-        continue;
-
-      UChar next = characters[++i];
-      if (!U16_IS_TRAIL(next))
-        continue;
-
-      UChar32 supplementaryCharacter = U16_GET_SUPPLEMENTARY(c, next);
-
-      if (supplementaryCharacter <
-          0x1F1E6)  // U+1F1E6 through U+1F1FF Regional Indicator Symbols
-        continue;
-      if (supplementaryCharacter <= 0x1F1FF)
-        return ComplexPath;
-
-      // Emoji Fitzpatrick modifiers trigger upgrade to complex path for shaping
-      // them.
-      if (supplementaryCharacter < 0x1F3FB)
-        continue;
-      if (supplementaryCharacter <= 0x1F3FF)
-        return ComplexPath;
-
-      if (supplementaryCharacter == eyeCharacter)
-        return ComplexPath;
-
-      // Man and Woman Emojies, in order to support emoji joiner combinations
-      // for family and couple pictographs.
-      // Compare http://unicode.org/reports/tr51/#Emoji_ZWJ_Sequences
-      if (supplementaryCharacter < 0x1F468)
-        continue;
-      if (supplementaryCharacter <= 0x1F469)
-        return ComplexPath;
-
-      if (supplementaryCharacter == leftSpeechBubbleCharacter)
-        return ComplexPath;
-
-      if (supplementaryCharacter <
-          0xE0100)  // U+E0100 through U+E01EF Unicode variation selectors.
-        continue;
-      if (supplementaryCharacter <= 0xE01EF)
-        return ComplexPath;
-
-      // Supplemental Private Use Area-A
-      if (supplementaryCharacter < 0xF0000)
-        continue;
-      if (supplementaryCharacter <= 0xFFFFD)
-        return ComplexPath;
-
-      // Supplemental Private Use Area-B
-      if (supplementaryCharacter < 0x100000)
-        continue;
-      if (supplementaryCharacter <= 0x10FFFD)
-        return ComplexPath;
-
-      // FIXME: Check for Brahmi (U+11000 block), Kaithi (U+11080 block) and
-      // other complex scripts in plane 1 or higher.
-
-      continue;
-    }
-
-    // Search for other Complex cases
-    if (valueInIntervalList(complexCodePathRanges, c))
-      return ComplexPath;
-  }
-
-  return result;
-}
-
 bool Character::isUprightInMixedVertical(UChar32 character) {
   RETURN_HAS_PROPERTY(character, isUprightInMixedVertical)
 }
 
 bool Character::isCJKIdeographOrSymbol(UChar32 c) {
   // Likely common case
   if (c < 0x2C7)
     return false;
 
   RETURN_HAS_PROPERTY(c, isCJKIdeographOrSymbol)
@@ skipping 132 matching lines @@
 }
 
 bool Character::isCommonOrInheritedScript(UChar32 character) {
   UErrorCode status = U_ZERO_ERROR;
   UScriptCode script = uscript_getScript(character, &status);
   return U_SUCCESS(status) &&
          (script == USCRIPT_COMMON || script == USCRIPT_INHERITED);
 }
 
 }  // namespace blink