chromium/src/third_party/blink/renderer/platform/text/character.cc - manifest_repos/chromium_src - Git at Google

 /*
  * 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
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include "third_party/blink/renderer/platform/text/character.h"

 #include <unicode/uchar.h>
 #include <unicode/ucptrie.h>
 #include <unicode/uobject.h>
 #include <unicode/uscript.h>
 #include <algorithm>

 #include "base/stl_util.h"
 #include "third_party/blink/renderer/platform/text/character_property_data.h"
 #include "third_party/blink/renderer/platform/text/icu_error.h"
 #include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
 #include "third_party/blink/renderer/platform/wtf/text/string_builder.h"


 namespace blink {

 static UCPTrie* CreateTrie() {
   // Create a Trie from the value array.
   ICUError error;
   UCPTrie* trie = ucptrie_openFromBinary(
       UCPTrieType::UCPTRIE_TYPE_FAST, UCPTrieValueWidth::UCPTRIE_VALUE_BITS_16,
       kSerializedCharacterData, kSerializedCharacterDataSize, nullptr, &error);
   DCHECK_EQ(error, U_ZERO_ERROR);
   return trie;
 }

 static bool HasProperty(UChar32 c, CharacterProperty property) {
   static const UCPTrie* trie = CreateTrie();
   return UCPTRIE_FAST_GET(trie, UCPTRIE_16, c) &
          static_cast<CharacterPropertyType>(property);
 }

 bool Character::IsUprightInMixedVertical(UChar32 character) {
   return u_getIntPropertyValue(character,
                                UProperty::UCHAR_VERTICAL_ORIENTATION) !=
          UVerticalOrientation::U_VO_ROTATED;
 }

 bool Character::IsCJKIdeographOrSymbolSlow(UChar32 c) {
   return HasProperty(c, CharacterProperty::kIsCJKIdeographOrSymbol);
 }

 bool Character::IsPotentialCustomElementNameChar(UChar32 character) {
   return HasProperty(character,
                      CharacterProperty::kIsPotentialCustomElementNameChar);
 }

 bool Character::IsBidiControl(UChar32 character) {
   return HasProperty(character, CharacterProperty::kIsBidiControl);
 }

 bool Character::IsHangulSlow(UChar32 character) {
   return HasProperty(character, CharacterProperty::kIsHangul);
 }

 unsigned Character::ExpansionOpportunityCount(
     base::span<const LChar> characters,
     TextDirection direction,
     bool& is_after_expansion,
     const TextJustify text_justify) {
   if (text_justify == TextJustify::kDistribute) {
     is_after_expansion = true;
     return characters.size();
   }

   unsigned count = 0;
   if (direction == TextDirection::kLtr) {
     for (unsigned i = 0; i < characters.size(); ++i) {
       if (TreatAsSpace(characters[i])) {
         count++;
         is_after_expansion = true;
       } else {
         is_after_expansion = false;
       }
     }
   } else {
     for (unsigned i = characters.size(); i > 0; --i) {
       if (TreatAsSpace(characters[i - 1])) {
         count++;
         is_after_expansion = true;
       } else {
         is_after_expansion = false;
       }
     }
   }

   return count;
 }

 unsigned Character::ExpansionOpportunityCount(
     base::span<const UChar> characters,
     TextDirection direction,
     bool& is_after_expansion,
     const TextJustify text_justify) {
   unsigned count = 0;
   if (direction == TextDirection::kLtr) {
     for (unsigned i = 0; i < characters.size(); ++i) {
       UChar32 character = characters[i];
       if (TreatAsSpace(character)) {
         count++;
         is_after_expansion = true;
         continue;
       }
       if (U16_IS_LEAD(character) && i + 1 < characters.size() &&
           U16_IS_TRAIL(characters[i + 1])) {
         character = U16_GET_SUPPLEMENTARY(character, characters[i + 1]);
         i++;
       }
       if (text_justify == TextJustify::kAuto &&
           IsCJKIdeographOrSymbol(character)) {
         if (!is_after_expansion)
           count++;
         count++;
         is_after_expansion = true;
         continue;
       }
       is_after_expansion = false;
     }
   } else {
     for (unsigned i = characters.size(); i > 0; --i) {
       UChar32 character = characters[i - 1];
       if (TreatAsSpace(character)) {
         count++;
         is_after_expansion = true;
         continue;
       }
       if (U16_IS_TRAIL(character) && i > 1 && U16_IS_LEAD(characters[i - 2])) {
         character = U16_GET_SUPPLEMENTARY(characters[i - 2], character);
         i--;
       }
       if (text_justify == TextJustify::kAuto &&
           IsCJKIdeographOrSymbol(character)) {
         if (!is_after_expansion)
           count++;
         count++;
         is_after_expansion = true;
         continue;
       }
       is_after_expansion = false;
     }
   }
   return count;
 }

 bool Character::CanTextDecorationSkipInk(UChar32 codepoint) {
   if (codepoint == kSolidusCharacter || codepoint == kReverseSolidusCharacter ||
       codepoint == kLowLineCharacter)
     return false;

   if (Character::IsCJKIdeographOrSymbol(codepoint))
     return false;

   UBlockCode block = ublock_getCode(codepoint);
   switch (block) {
     // These blocks contain CJK characters we don't want to skip ink, but are
     // not ideograph that IsCJKIdeographOrSymbol() does not cover.
     case UBLOCK_HANGUL_JAMO:
     case UBLOCK_HANGUL_COMPATIBILITY_JAMO:
     case UBLOCK_HANGUL_SYLLABLES:
     case UBLOCK_HANGUL_JAMO_EXTENDED_A:
     case UBLOCK_HANGUL_JAMO_EXTENDED_B:
     case UBLOCK_LINEAR_B_IDEOGRAMS:
       return false;
     default:
       return true;
   }
 }

 bool Character::CanReceiveTextEmphasis(UChar32 c) {
   WTF::unicode::CharCategory category = WTF::unicode::Category(c);
   if (category &
       (WTF::unicode::kSeparator_Space | WTF::unicode::kSeparator_Line |
        WTF::unicode::kSeparator_Paragraph | WTF::unicode::kOther_NotAssigned |
        WTF::unicode::kOther_Control | WTF::unicode::kOther_Format))
     return false;

   // Additional word-separator characters listed in CSS Text Level 3 Editor's
   // Draft 3 November 2010.
   if (c == kEthiopicWordspaceCharacter ||
       c == kAegeanWordSeparatorLineCharacter ||
       c == kAegeanWordSeparatorDotCharacter ||
       c == kUgariticWordDividerCharacter ||
       c == kTibetanMarkIntersyllabicTshegCharacter ||
       c == kTibetanMarkDelimiterTshegBstarCharacter)
     return false;

   return true;
 }

 bool Character::IsEmojiTagSequence(UChar32 c) {
   // http://www.unicode.org/reports/tr51/proposed.html#valid-emoji-tag-sequences
   return (c >= kTagDigitZero && c <= kTagDigitNine) ||
          (c >= kTagLatinSmallLetterA && c <= kTagLatinSmallLetterZ);
 }

 bool Character::IsExtendedPictographic(UChar32 c) {
   return u_hasBinaryProperty(c, UCHAR_EXTENDED_PICTOGRAPHIC);
 }

 bool Character::IsEmojiComponent(UChar32 c) {
   return u_hasBinaryProperty(c, UCHAR_EMOJI_COMPONENT);
 }

 template <typename CharacterType>
 static inline String NormalizeSpacesInternal(const CharacterType* characters,
                                              unsigned length) {
   StringBuilder normalized;
   normalized.ReserveCapacity(length);

   for (unsigned i = 0; i < length; ++i)
     normalized.Append(Character::NormalizeSpaces(characters[i]));

   return normalized.ToString();
 }

 String Character::NormalizeSpaces(const LChar* characters, unsigned length) {
   return NormalizeSpacesInternal(characters, length);
 }

 String Character::NormalizeSpaces(const UChar* characters, unsigned length) {
   return NormalizeSpacesInternal(characters, length);
 }

 bool Character::IsCommonOrInheritedScript(UChar32 character) {
   ICUError status;
   UScriptCode script = uscript_getScript(character, &status);
   return U_SUCCESS(status) &&
          (script == USCRIPT_COMMON || script == USCRIPT_INHERITED);
 }

 bool Character::IsPrivateUse(UChar32 character) {
   return WTF::unicode::Category(character) & WTF::unicode::kOther_PrivateUse;
 }

 bool Character::IsNonCharacter(UChar32 character) {
   return U_IS_UNICODE_NONCHAR(character);
 }

 bool Character::HasDefiniteScript(UChar32 character) {
   ICUError err;
   UScriptCode hint_char_script = uscript_getScript(character, &err);
   if (!U_SUCCESS(err))
     return false;
   return hint_char_script != USCRIPT_INHERITED &&
          hint_char_script != USCRIPT_COMMON;
 }

 // https://mathml-refresh.github.io/mathml-core/#stretchy-operator-axis
 static const UChar stretchy_operator_with_inline_axis[]{
     0x003D, 0x005E, 0x005F, 0x007E, 0x00AF, 0x02C6, 0x02C7, 0x02C9, 0x02CD,
     0x02DC, 0x02F7, 0x0302, 0x0332, 0x203E, 0x20D0, 0x20D1, 0x20D6, 0x20D7,
     0x20E1, 0x2190, 0x2192, 0x2194, 0x2198, 0x2199, 0x219C, 0x219D, 0x219E,
     0x21A0, 0x21A2, 0x21A3, 0x21A4, 0x21A6, 0x21A9, 0x21AA, 0x21AB, 0x21AC,
     0x21AD, 0x21B4, 0x21B9, 0x21BC, 0x21BD, 0x21C0, 0x21C1, 0x21C4, 0x21C6,
     0x21C7, 0x21C9, 0x21CB, 0x21CC, 0x21D0, 0x21D2, 0x21D4, 0x21DA, 0x21DB,
     0x21DC, 0x21DD, 0x21E0, 0x21E2, 0x21E4, 0x21E5, 0x21E6, 0x21E8, 0x21F0,
     0x21F6, 0x21FD, 0x21FE, 0x21FF, 0x23B4, 0x23B5, 0x23DC, 0x23DD, 0x23DE,
     0x23DF, 0x23E0, 0x23E1, 0x2500, 0x27F5, 0x27F6, 0x27F7, 0x27F8, 0x27F9,
     0x27FA, 0x27FB, 0x27FC, 0x27FD, 0x27FE, 0x27FF, 0x290C, 0x290D, 0x290E,
     0x290F, 0x2910, 0x294E, 0x2950, 0x2952, 0x2953, 0x2956, 0x2957, 0x295A,
     0x295B, 0x295E, 0x295F, 0x2B45, 0x2B46, 0xFE35, 0xFE36, 0xFE37, 0xFE38};

 bool Character::IsVerticalMathCharacter(UChar32 text_content) {
   return text_content != kArabicMathematicalOperatorMeemWithHahWithTatweel &&
          text_content != kArabicMathematicalOperatorHahWithDal &&
          !std::binary_search(stretchy_operator_with_inline_axis,
                              stretchy_operator_with_inline_axis +
                                  base::size(stretchy_operator_with_inline_axis),
                              text_content);
 }

 }  // namespace blink
	/*
	* 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
	* copyright notice, this list of conditions and the following disclaimer
	* in the documentation and/or other materials provided with the
	* distribution.
	* * Neither the name of Google Inc. nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "third_party/blink/renderer/platform/text/character.h"

	#include <unicode/uchar.h>
	#include <unicode/ucptrie.h>
	#include <unicode/uobject.h>
	#include <unicode/uscript.h>
	#include <algorithm>

	#include "base/stl_util.h"
	#include "third_party/blink/renderer/platform/text/character_property_data.h"
	#include "third_party/blink/renderer/platform/text/icu_error.h"
	#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
	#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"


	namespace blink {

	static UCPTrie* CreateTrie() {
	// Create a Trie from the value array.
	ICUError error;
	UCPTrie* trie = ucptrie_openFromBinary(
	UCPTrieType::UCPTRIE_TYPE_FAST, UCPTrieValueWidth::UCPTRIE_VALUE_BITS_16,
	kSerializedCharacterData, kSerializedCharacterDataSize, nullptr, &error);
	DCHECK_EQ(error, U_ZERO_ERROR);
	return trie;
	}

	static bool HasProperty(UChar32 c, CharacterProperty property) {
	static const UCPTrie* trie = CreateTrie();
	return UCPTRIE_FAST_GET(trie, UCPTRIE_16, c) &
	static_cast<CharacterPropertyType>(property);
	}

	bool Character::IsUprightInMixedVertical(UChar32 character) {
	return u_getIntPropertyValue(character,
	UProperty::UCHAR_VERTICAL_ORIENTATION) !=
	UVerticalOrientation::U_VO_ROTATED;
	}

	bool Character::IsCJKIdeographOrSymbolSlow(UChar32 c) {
	return HasProperty(c, CharacterProperty::kIsCJKIdeographOrSymbol);
	}

	bool Character::IsPotentialCustomElementNameChar(UChar32 character) {
	return HasProperty(character,
	CharacterProperty::kIsPotentialCustomElementNameChar);
	}

	bool Character::IsBidiControl(UChar32 character) {
	return HasProperty(character, CharacterProperty::kIsBidiControl);
	}

	bool Character::IsHangulSlow(UChar32 character) {
	return HasProperty(character, CharacterProperty::kIsHangul);
	}

	unsigned Character::ExpansionOpportunityCount(
	base::span<const LChar> characters,
	TextDirection direction,
	bool& is_after_expansion,
	const TextJustify text_justify) {
	if (text_justify == TextJustify::kDistribute) {
	is_after_expansion = true;
	return characters.size();
	}

	unsigned count = 0;
	if (direction == TextDirection::kLtr) {
	for (unsigned i = 0; i < characters.size(); ++i) {
	if (TreatAsSpace(characters[i])) {
	count++;
	is_after_expansion = true;
	} else {
	is_after_expansion = false;
	}
	}
	} else {
	for (unsigned i = characters.size(); i > 0; --i) {
	if (TreatAsSpace(characters[i - 1])) {
	count++;
	is_after_expansion = true;
	} else {
	is_after_expansion = false;
	}
	}
	}

	return count;
	}

	unsigned Character::ExpansionOpportunityCount(
	base::span<const UChar> characters,
	TextDirection direction,
	bool& is_after_expansion,
	const TextJustify text_justify) {
	unsigned count = 0;
	if (direction == TextDirection::kLtr) {
	for (unsigned i = 0; i < characters.size(); ++i) {
	UChar32 character = characters[i];
	if (TreatAsSpace(character)) {
	count++;
	is_after_expansion = true;
	continue;
	}
	if (U16_IS_LEAD(character) && i + 1 < characters.size() &&
	U16_IS_TRAIL(characters[i + 1])) {
	character = U16_GET_SUPPLEMENTARY(character, characters[i + 1]);
	i++;
	}
	if (text_justify == TextJustify::kAuto &&
	IsCJKIdeographOrSymbol(character)) {
	if (!is_after_expansion)
	count++;
	count++;
	is_after_expansion = true;
	continue;
	}
	is_after_expansion = false;
	}
	} else {
	for (unsigned i = characters.size(); i > 0; --i) {
	UChar32 character = characters[i - 1];
	if (TreatAsSpace(character)) {
	count++;
	is_after_expansion = true;
	continue;
	}
	if (U16_IS_TRAIL(character) && i > 1 && U16_IS_LEAD(characters[i - 2])) {
	character = U16_GET_SUPPLEMENTARY(characters[i - 2], character);
	i--;
	}
	if (text_justify == TextJustify::kAuto &&
	IsCJKIdeographOrSymbol(character)) {
	if (!is_after_expansion)
	count++;
	count++;
	is_after_expansion = true;
	continue;
	}
	is_after_expansion = false;
	}
	}
	return count;
	}

	bool Character::CanTextDecorationSkipInk(UChar32 codepoint) {
	if (codepoint == kSolidusCharacter \|\| codepoint == kReverseSolidusCharacter \|\|
	codepoint == kLowLineCharacter)
	return false;

	if (Character::IsCJKIdeographOrSymbol(codepoint))
	return false;

	UBlockCode block = ublock_getCode(codepoint);
	switch (block) {
	// These blocks contain CJK characters we don't want to skip ink, but are
	// not ideograph that IsCJKIdeographOrSymbol() does not cover.
	case UBLOCK_HANGUL_JAMO:
	case UBLOCK_HANGUL_COMPATIBILITY_JAMO:
	case UBLOCK_HANGUL_SYLLABLES:
	case UBLOCK_HANGUL_JAMO_EXTENDED_A:
	case UBLOCK_HANGUL_JAMO_EXTENDED_B:
	case UBLOCK_LINEAR_B_IDEOGRAMS:
	return false;
	default:
	return true;
	}
	}

	bool Character::CanReceiveTextEmphasis(UChar32 c) {
	WTF::unicode::CharCategory category = WTF::unicode::Category(c);
	if (category &
	(WTF::unicode::kSeparator_Space \| WTF::unicode::kSeparator_Line \|
	WTF::unicode::kSeparator_Paragraph \| WTF::unicode::kOther_NotAssigned \|
	WTF::unicode::kOther_Control \| WTF::unicode::kOther_Format))
	return false;

	// Additional word-separator characters listed in CSS Text Level 3 Editor's
	// Draft 3 November 2010.
	if (c == kEthiopicWordspaceCharacter \|\|
	c == kAegeanWordSeparatorLineCharacter \|\|
	c == kAegeanWordSeparatorDotCharacter \|\|
	c == kUgariticWordDividerCharacter \|\|
	c == kTibetanMarkIntersyllabicTshegCharacter \|\|
	c == kTibetanMarkDelimiterTshegBstarCharacter)
	return false;

	return true;
	}

	bool Character::IsEmojiTagSequence(UChar32 c) {
	// http://www.unicode.org/reports/tr51/proposed.html#valid-emoji-tag-sequences
	return (c >= kTagDigitZero && c <= kTagDigitNine) \|\|
	(c >= kTagLatinSmallLetterA && c <= kTagLatinSmallLetterZ);
	}

	bool Character::IsExtendedPictographic(UChar32 c) {
	return u_hasBinaryProperty(c, UCHAR_EXTENDED_PICTOGRAPHIC);
	}

	bool Character::IsEmojiComponent(UChar32 c) {
	return u_hasBinaryProperty(c, UCHAR_EMOJI_COMPONENT);
	}

	template <typename CharacterType>
	static inline String NormalizeSpacesInternal(const CharacterType* characters,
	unsigned length) {
	StringBuilder normalized;
	normalized.ReserveCapacity(length);

	for (unsigned i = 0; i < length; ++i)
	normalized.Append(Character::NormalizeSpaces(characters[i]));

	return normalized.ToString();
	}

	String Character::NormalizeSpaces(const LChar* characters, unsigned length) {
	return NormalizeSpacesInternal(characters, length);
	}

	String Character::NormalizeSpaces(const UChar* characters, unsigned length) {
	return NormalizeSpacesInternal(characters, length);
	}

	bool Character::IsCommonOrInheritedScript(UChar32 character) {
	ICUError status;
	UScriptCode script = uscript_getScript(character, &status);
	return U_SUCCESS(status) &&
	(script == USCRIPT_COMMON \|\| script == USCRIPT_INHERITED);
	}

	bool Character::IsPrivateUse(UChar32 character) {
	return WTF::unicode::Category(character) & WTF::unicode::kOther_PrivateUse;
	}

	bool Character::IsNonCharacter(UChar32 character) {
	return U_IS_UNICODE_NONCHAR(character);
	}

	bool Character::HasDefiniteScript(UChar32 character) {
	ICUError err;
	UScriptCode hint_char_script = uscript_getScript(character, &err);
	if (!U_SUCCESS(err))
	return false;
	return hint_char_script != USCRIPT_INHERITED &&
	hint_char_script != USCRIPT_COMMON;
	}

	// https://mathml-refresh.github.io/mathml-core/#stretchy-operator-axis
	static const UChar stretchy_operator_with_inline_axis[]{
	0x003D, 0x005E, 0x005F, 0x007E, 0x00AF, 0x02C6, 0x02C7, 0x02C9, 0x02CD,
	0x02DC, 0x02F7, 0x0302, 0x0332, 0x203E, 0x20D0, 0x20D1, 0x20D6, 0x20D7,
	0x20E1, 0x2190, 0x2192, 0x2194, 0x2198, 0x2199, 0x219C, 0x219D, 0x219E,
	0x21A0, 0x21A2, 0x21A3, 0x21A4, 0x21A6, 0x21A9, 0x21AA, 0x21AB, 0x21AC,
	0x21AD, 0x21B4, 0x21B9, 0x21BC, 0x21BD, 0x21C0, 0x21C1, 0x21C4, 0x21C6,
	0x21C7, 0x21C9, 0x21CB, 0x21CC, 0x21D0, 0x21D2, 0x21D4, 0x21DA, 0x21DB,
	0x21DC, 0x21DD, 0x21E0, 0x21E2, 0x21E4, 0x21E5, 0x21E6, 0x21E8, 0x21F0,
	0x21F6, 0x21FD, 0x21FE, 0x21FF, 0x23B4, 0x23B5, 0x23DC, 0x23DD, 0x23DE,
	0x23DF, 0x23E0, 0x23E1, 0x2500, 0x27F5, 0x27F6, 0x27F7, 0x27F8, 0x27F9,
	0x27FA, 0x27FB, 0x27FC, 0x27FD, 0x27FE, 0x27FF, 0x290C, 0x290D, 0x290E,
	0x290F, 0x2910, 0x294E, 0x2950, 0x2952, 0x2953, 0x2956, 0x2957, 0x295A,
	0x295B, 0x295E, 0x295F, 0x2B45, 0x2B46, 0xFE35, 0xFE36, 0xFE37, 0xFE38};

	bool Character::IsVerticalMathCharacter(UChar32 text_content) {
	return text_content != kArabicMathematicalOperatorMeemWithHahWithTatweel &&
	text_content != kArabicMathematicalOperatorHahWithDal &&
	!std::binary_search(stretchy_operator_with_inline_axis,
	stretchy_operator_with_inline_axis +
	base::size(stretchy_operator_with_inline_axis),
	text_content);
	}

	} // namespace blink