/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/ArrayUtils.h"
#include "mozilla/FloatingPoint.h"

#include "txXSLTNumber.h"
#include "nsGkAtoms.h"
#include "txCore.h"
#include <math.h>
#include "txExpr.h"
#include "txXSLTPatterns.h"
#include "txIXPathContext.h"
#include "txXPathTreeWalker.h"

#include <algorithm>

using mozilla::MakeUnique;
using mozilla::UniquePtr;

nsresult txXSLTNumber::createNumber(Expr* aValueExpr, txPattern* aCountPattern,
                                    txPattern* aFromPattern, LevelType aLevel,
                                    Expr* aGroupSize, Expr* aGroupSeparator,
                                    Expr* aFormat, txIEvalContext* aContext,
                                    nsAString& aResult) {
  aResult.Truncate();
  nsresult rv = NS_OK;

  // Parse format
  txList counters;
  nsAutoString head, tail;
  rv = getCounters(aGroupSize, aGroupSeparator, aFormat, aContext, counters,
                   head, tail);
  NS_ENSURE_SUCCESS(rv, rv);

  // Create list of values to format
  txList values;
  nsAutoString valueString;
  rv = getValueList(aValueExpr, aCountPattern, aFromPattern, aLevel, aContext,
                    values, valueString);
  NS_ENSURE_SUCCESS(rv, rv);

  if (!valueString.IsEmpty()) {
    aResult = valueString;

    return NS_OK;
  }

  // Create resulting string
  aResult = head;
  bool first = true;
  txListIterator valueIter(&values);
  txListIterator counterIter(&counters);
  valueIter.resetToEnd();
  int32_t value;
  txFormattedCounter* counter = 0;
  while ((value = NS_PTR_TO_INT32(valueIter.previous()))) {
    if (counterIter.hasNext()) {
      counter = (txFormattedCounter*)counterIter.next();
    }

    if (!first) {
      aResult.Append(counter->mSeparator);
    }

    counter->appendNumber(value, aResult);
    first = false;
  }

  aResult.Append(tail);

  txListIterator iter(&counters);
  while (iter.hasNext()) {
    delete (txFormattedCounter*)iter.next();
  }

  return NS_OK;
}

nsresult txXSLTNumber::getValueList(Expr* aValueExpr, txPattern* aCountPattern,
                                    txPattern* aFromPattern, LevelType aLevel,
                                    txIEvalContext* aContext, txList& aValues,
                                    nsAString& aValueString) {
  aValueString.Truncate();
  nsresult rv = NS_OK;

  // If the value attribute exists then use that
  if (aValueExpr) {
    RefPtr<txAExprResult> result;
    rv = aValueExpr->evaluate(aContext, getter_AddRefs(result));
    NS_ENSURE_SUCCESS(rv, rv);

    double value = result->numberValue();

    if (std::isinf(value) || std::isnan(value) || value < 0.5) {
      txDouble::toString(value, aValueString);
      return NS_OK;
    }

    aValues.add(NS_INT32_TO_PTR((int32_t)floor(value + 0.5)));
    return NS_OK;
  }

  // Otherwise use count/from/level

  txPattern* countPattern = aCountPattern;
  UniquePtr<txPattern> newCountPattern;
  const txXPathNode& currNode = aContext->getContextNode();

  // Parse count- and from-attributes

  if (!aCountPattern) {
    txNodeTest* nodeTest;
    uint16_t nodeType = txXPathNodeUtils::getNodeType(currNode);
    switch (nodeType) {
      case txXPathNodeType::ELEMENT_NODE: {
        RefPtr<nsAtom> localName = txXPathNodeUtils::getLocalName(currNode);
        int32_t namespaceID = txXPathNodeUtils::getNamespaceID(currNode);
        nodeTest = new txNameTest(0, localName, namespaceID,
                                  txXPathNodeType::ELEMENT_NODE);
        break;
      }
      case txXPathNodeType::TEXT_NODE:
      case txXPathNodeType::CDATA_SECTION_NODE: {
        nodeTest = new txNodeTypeTest(txNodeTypeTest::TEXT_TYPE);
        break;
      }
      case txXPathNodeType::PROCESSING_INSTRUCTION_NODE: {
        txNodeTypeTest* typeTest;
        typeTest = new txNodeTypeTest(txNodeTypeTest::PI_TYPE);
        nsAutoString nodeName;
        txXPathNodeUtils::getNodeName(currNode, nodeName);
        typeTest->setNodeName(nodeName);
        nodeTest = typeTest;
        break;
      }
      case txXPathNodeType::COMMENT_NODE: {
        nodeTest = new txNodeTypeTest(txNodeTypeTest::COMMENT_TYPE);
        break;
      }
      case txXPathNodeType::DOCUMENT_NODE:
      case txXPathNodeType::ATTRIBUTE_NODE:
      default: {
        // this won't match anything as we walk up the tree
        // but it's what the spec says to do
        nodeTest = new txNameTest(0, nsGkAtoms::_asterisk, 0, nodeType);
        break;
      }
    }
    MOZ_ASSERT(nodeTest);
    newCountPattern = MakeUnique<txStepPattern>(nodeTest, false);
    countPattern = newCountPattern.get();
  }

  // Generate list of values depending on the value of the level-attribute

  // level = "single"
  if (aLevel == eLevelSingle) {
    txXPathTreeWalker walker(currNode);
    do {
      if (aFromPattern && !walker.isOnNode(currNode)) {
        bool matched;
        rv = aFromPattern->matches(walker.getCurrentPosition(), aContext,
                                   matched);
        NS_ENSURE_SUCCESS(rv, rv);

        if (matched) {
          break;
        }
      }

      bool matched;
      rv =
          countPattern->matches(walker.getCurrentPosition(), aContext, matched);
      NS_ENSURE_SUCCESS(rv, rv);

      if (matched) {
        int32_t count;
        rv = getSiblingCount(walker, countPattern, aContext, &count);
        NS_ENSURE_SUCCESS(rv, rv);

        aValues.add(NS_INT32_TO_PTR(count));
        break;
      }

    } while (walker.moveToParent());

    // Spec says to only match ancestors that are decendants of the
    // ancestor that matches the from-pattern, so keep going to make
    // sure that there is an ancestor that does.
    if (aFromPattern && aValues.getLength()) {
      bool hasParent;
      while ((hasParent = walker.moveToParent())) {
        bool matched;
        rv = aFromPattern->matches(walker.getCurrentPosition(), aContext,
                                   matched);
        NS_ENSURE_SUCCESS(rv, rv);

        if (matched) {
          break;
        }
      }

      if (!hasParent) {
        aValues.clear();
      }
    }
  }
  // level = "multiple"
  else if (aLevel == eLevelMultiple) {
    // find all ancestor-or-selfs that matches count until...
    txXPathTreeWalker walker(currNode);
    bool matchedFrom = false;
    do {
      if (aFromPattern && !walker.isOnNode(currNode)) {
        rv = aFromPattern->matches(walker.getCurrentPosition(), aContext,
                                   matchedFrom);
        NS_ENSURE_SUCCESS(rv, rv);

        if (matchedFrom) {
          //... we find one that matches from
          break;
        }
      }

      bool matched;
      rv =
          countPattern->matches(walker.getCurrentPosition(), aContext, matched);
      NS_ENSURE_SUCCESS(rv, rv);

      if (matched) {
        int32_t count;
        rv = getSiblingCount(walker, countPattern, aContext, &count);
        NS_ENSURE_SUCCESS(rv, rv);

        aValues.add(NS_INT32_TO_PTR(count));
      }
    } while (walker.moveToParent());

    // Spec says to only match ancestors that are decendants of the
    // ancestor that matches the from-pattern, so if none did then
    // we shouldn't search anything
    if (aFromPattern && !matchedFrom) {
      aValues.clear();
    }
  }
  // level = "any"
  else if (aLevel == eLevelAny) {
    int32_t value = 0;
    bool matchedFrom = false;

    txXPathTreeWalker walker(currNode);
    do {
      if (aFromPattern && !walker.isOnNode(currNode)) {
        rv = aFromPattern->matches(walker.getCurrentPosition(), aContext,
                                   matchedFrom);
        NS_ENSURE_SUCCESS(rv, rv);

        if (matchedFrom) {
          break;
        }
      }

      bool matched;
      rv =
          countPattern->matches(walker.getCurrentPosition(), aContext, matched);
      NS_ENSURE_SUCCESS(rv, rv);

      if (matched) {
        ++value;
      }

    } while (getPrevInDocumentOrder(walker));

    // Spec says to only count nodes that follows the first node that
    // matches the from pattern. So so if none did then we shouldn't
    // count any
    if (aFromPattern && !matchedFrom) {
      value = 0;
    }

    if (value) {
      aValues.add(NS_INT32_TO_PTR(value));
    }
  }

  return NS_OK;
}

nsresult txXSLTNumber::getCounters(Expr* aGroupSize, Expr* aGroupSeparator,
                                   Expr* aFormat, txIEvalContext* aContext,
                                   txList& aCounters, nsAString& aHead,
                                   nsAString& aTail) {
  aHead.Truncate();
  aTail.Truncate();

  nsresult rv = NS_OK;

  nsAutoString groupSeparator;
  int32_t groupSize = 0;
  if (aGroupSize && aGroupSeparator) {
    nsAutoString sizeStr;
    rv = aGroupSize->evaluateToString(aContext, sizeStr);
    NS_ENSURE_SUCCESS(rv, rv);

    double size = txDouble::toDouble(sizeStr);
    groupSize = (int32_t)size;
    if ((double)groupSize != size) {
      groupSize = 0;
    }

    rv = aGroupSeparator->evaluateToString(aContext, groupSeparator);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  nsAutoString format;
  if (aFormat) {
    rv = aFormat->evaluateToString(aContext, format);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  uint32_t formatLen = format.Length();
  uint32_t formatPos = 0;
  char16_t ch = 0;

  // start with header
  while (formatPos < formatLen &&
         !isAlphaNumeric(ch = format.CharAt(formatPos))) {
    aHead.Append(ch);
    ++formatPos;
  }

  // If there are no formatting tokens we need to create a default one.
  if (formatPos == formatLen) {
    txFormattedCounter* defaultCounter;
    rv = txFormattedCounter::getCounterFor(u"1"_ns, groupSize, groupSeparator,
                                           defaultCounter);
    NS_ENSURE_SUCCESS(rv, rv);

    defaultCounter->mSeparator.Assign('.');
    aCounters.add(defaultCounter);

    return NS_OK;
  }

  while (formatPos < formatLen) {
    nsAutoString sepToken;
    // parse separator token
    if (!aCounters.getLength()) {
      // Set the first counters separator to default value so that if
      // there is only one formatting token and we're formatting a
      // value-list longer then one we use the default separator. This
      // won't be used when formatting the first value anyway.
      sepToken.Assign('.');
    } else {
      while (formatPos < formatLen &&
             !isAlphaNumeric(ch = format.CharAt(formatPos))) {
        sepToken.Append(ch);
        ++formatPos;
      }
    }

    // if we're at the end of the string then the previous token was the tail
    if (formatPos == formatLen) {
      aTail = sepToken;
      return NS_OK;
    }

    // parse formatting token
    nsAutoString numToken;
    while (formatPos < formatLen &&
           isAlphaNumeric(ch = format.CharAt(formatPos))) {
      numToken.Append(ch);
      ++formatPos;
    }

    txFormattedCounter* counter = 0;
    rv = txFormattedCounter::getCounterFor(numToken, groupSize, groupSeparator,
                                           counter);
    if (NS_FAILED(rv)) {
      txListIterator iter(&aCounters);
      while (iter.hasNext()) {
        delete (txFormattedCounter*)iter.next();
      }
      aCounters.clear();
      return rv;
    }

    // Add to list of counters
    counter->mSeparator = sepToken;
    aCounters.add(counter);
  }

  return NS_OK;
}

nsresult txXSLTNumber::getSiblingCount(txXPathTreeWalker& aWalker,
                                       txPattern* aCountPattern,
                                       txIMatchContext* aContext,
                                       int32_t* aCount) {
  int32_t value = 1;
  while (aWalker.moveToPreviousSibling()) {
    bool matched;
    nsresult rv =
        aCountPattern->matches(aWalker.getCurrentPosition(), aContext, matched);
    NS_ENSURE_SUCCESS(rv, rv);

    if (matched) {
      ++value;
    }
  }

  *aCount = value;

  return NS_OK;
}

bool txXSLTNumber::getPrevInDocumentOrder(txXPathTreeWalker& aWalker) {
  if (aWalker.moveToPreviousSibling()) {
    while (aWalker.moveToLastChild()) {
      // do nothing
    }
    return true;
  }
  return aWalker.moveToParent();
}

struct CharRange {
  char16_t lower;  // inclusive
  char16_t upper;  // inclusive

  bool operator<(const CharRange& other) const { return upper < other.lower; }
};

bool txXSLTNumber::isAlphaNumeric(char16_t ch) {
  static const CharRange alphanumericRanges[] = {
      // clang-format off
        { 0x0030, 0x0039 },
        { 0x0041, 0x005A },
        { 0x0061, 0x007A },
        { 0x00AA, 0x00AA },
        { 0x00B2, 0x00B3 },
        { 0x00B5, 0x00B5 },
        { 0x00B9, 0x00BA },
        { 0x00BC, 0x00BE },
        { 0x00C0, 0x00D6 },
        { 0x00D8, 0x00F6 },
        { 0x00F8, 0x021F },
        { 0x0222, 0x0233 },
        { 0x0250, 0x02AD },
        { 0x02B0, 0x02B8 },
        { 0x02BB, 0x02C1 },
        { 0x02D0, 0x02D1 },
        { 0x02E0, 0x02E4 },
        { 0x02EE, 0x02EE },
        { 0x037A, 0x037A },
        { 0x0386, 0x0386 },
        { 0x0388, 0x038A },
        { 0x038C, 0x038C },
        { 0x038E, 0x03A1 },
        { 0x03A3, 0x03CE },
        { 0x03D0, 0x03D7 },
        { 0x03DA, 0x03F3 },
        { 0x0400, 0x0481 },
        { 0x048C, 0x04C4 },
        { 0x04C7, 0x04C8 },
        { 0x04CB, 0x04CC },
        { 0x04D0, 0x04F5 },
        { 0x04F8, 0x04F9 },
        { 0x0531, 0x0556 },
        { 0x0559, 0x0559 },
        { 0x0561, 0x0587 },
        { 0x05D0, 0x05EA },
        { 0x05F0, 0x05F2 },
        { 0x0621, 0x063A },
        { 0x0640, 0x064A },
        { 0x0660, 0x0669 },
        { 0x0671, 0x06D3 },
        { 0x06D5, 0x06D5 },
        { 0x06E5, 0x06E6 },
        { 0x06F0, 0x06FC },
        { 0x0710, 0x0710 },
        { 0x0712, 0x072C },
        { 0x0780, 0x07A5 },
        { 0x0905, 0x0939 },
        { 0x093D, 0x093D },
        { 0x0950, 0x0950 },
        { 0x0958, 0x0961 },
        { 0x0966, 0x096F },
        { 0x0985, 0x098C },
        { 0x098F, 0x0990 },
        { 0x0993, 0x09A8 },
        { 0x09AA, 0x09B0 },
        { 0x09B2, 0x09B2 },
        { 0x09B6, 0x09B9 },
        { 0x09DC, 0x09DD },
        { 0x09DF, 0x09E1 },
        { 0x09E6, 0x09F1 },
        { 0x09F4, 0x09F9 },
        { 0x0A05, 0x0A0A },
        { 0x0A0F, 0x0A10 },
        { 0x0A13, 0x0A28 },
        { 0x0A2A, 0x0A30 },
        { 0x0A32, 0x0A33 },
        { 0x0A35, 0x0A36 },
        { 0x0A38, 0x0A39 },
        { 0x0A59, 0x0A5C },
        { 0x0A5E, 0x0A5E },
        { 0x0A66, 0x0A6F },
        { 0x0A72, 0x0A74 },
        { 0x0A85, 0x0A8B },
        { 0x0A8D, 0x0A8D },
        { 0x0A8F, 0x0A91 },
        { 0x0A93, 0x0AA8 },
        { 0x0AAA, 0x0AB0 },
        { 0x0AB2, 0x0AB3 },
        { 0x0AB5, 0x0AB9 },
        { 0x0ABD, 0x0ABD },
        { 0x0AD0, 0x0AD0 },
        { 0x0AE0, 0x0AE0 },
        { 0x0AE6, 0x0AEF },
        { 0x0B05, 0x0B0C },
        { 0x0B0F, 0x0B10 },
        { 0x0B13, 0x0B28 },
        { 0x0B2A, 0x0B30 },
        { 0x0B32, 0x0B33 },
        { 0x0B36, 0x0B39 },
        { 0x0B3D, 0x0B3D },
        { 0x0B5C, 0x0B5D },
        { 0x0B5F, 0x0B61 },
        { 0x0B66, 0x0B6F },
        { 0x0B85, 0x0B8A },
        { 0x0B8E, 0x0B90 },
        { 0x0B92, 0x0B95 },
        { 0x0B99, 0x0B9A },
        { 0x0B9C, 0x0B9C },
        { 0x0B9E, 0x0B9F },
        { 0x0BA3, 0x0BA4 },
        { 0x0BA8, 0x0BAA },
        { 0x0BAE, 0x0BB5 },
        { 0x0BB7, 0x0BB9 },
        { 0x0BE7, 0x0BF2 },
        { 0x0C05, 0x0C0C },
        { 0x0C0E, 0x0C10 },
        { 0x0C12, 0x0C28 },
        { 0x0C2A, 0x0C33 },
        { 0x0C35, 0x0C39 },
        { 0x0C60, 0x0C61 },
        { 0x0C66, 0x0C6F },
        { 0x0C85, 0x0C8C },
        { 0x0C8E, 0x0C90 },
        { 0x0C92, 0x0CA8 },
        { 0x0CAA, 0x0CB3 },
        { 0x0CB5, 0x0CB9 },
        { 0x0CDE, 0x0CDE },
        { 0x0CE0, 0x0CE1 },
        { 0x0CE6, 0x0CEF },
        { 0x0D05, 0x0D0C },
        { 0x0D0E, 0x0D10 },
        { 0x0D12, 0x0D28 },
        { 0x0D2A, 0x0D39 },
        { 0x0D60, 0x0D61 },
        { 0x0D66, 0x0D6F },
        { 0x0D85, 0x0D96 },
        { 0x0D9A, 0x0DB1 },
        { 0x0DB3, 0x0DBB },
        { 0x0DBD, 0x0DBD },
        { 0x0DC0, 0x0DC6 },
        { 0x0E01, 0x0E30 },
        { 0x0E32, 0x0E33 },
        { 0x0E40, 0x0E46 },
        { 0x0E50, 0x0E59 },
        { 0x0E81, 0x0E82 },
        { 0x0E84, 0x0E84 },
        { 0x0E87, 0x0E88 },
        { 0x0E8A, 0x0E8A },
        { 0x0E8D, 0x0E8D },
        { 0x0E94, 0x0E97 },
        { 0x0E99, 0x0E9F },
        { 0x0EA1, 0x0EA3 },
        { 0x0EA5, 0x0EA5 },
        { 0x0EA7, 0x0EA7 },
        { 0x0EAA, 0x0EAB },
        { 0x0EAD, 0x0EB0 },
        { 0x0EB2, 0x0EB3 },
        { 0x0EBD, 0x0EBD },
        { 0x0EC0, 0x0EC4 },
        { 0x0EC6, 0x0EC6 },
        { 0x0ED0, 0x0ED9 },
        { 0x0EDC, 0x0EDD },
        { 0x0F00, 0x0F00 },
        { 0x0F20, 0x0F33 },
        { 0x0F40, 0x0F47 },
        { 0x0F49, 0x0F6A },
        { 0x0F88, 0x0F8B },
        { 0x1000, 0x1021 },
        { 0x1023, 0x1027 },
        { 0x1029, 0x102A },
        { 0x1040, 0x1049 },
        { 0x1050, 0x1055 },
        { 0x10A0, 0x10C5 },
        { 0x10D0, 0x10F6 },
        { 0x1100, 0x1159 },
        { 0x115F, 0x11A2 },
        { 0x11A8, 0x11F9 },
        { 0x1200, 0x1206 },
        { 0x1208, 0x1246 },
        { 0x1248, 0x1248 },
        { 0x124A, 0x124D },
        { 0x1250, 0x1256 },
        { 0x1258, 0x1258 },
        { 0x125A, 0x125D },
        { 0x1260, 0x1286 },
        { 0x1288, 0x1288 },
        { 0x128A, 0x128D },
        { 0x1290, 0x12AE },
        { 0x12B0, 0x12B0 },
        { 0x12B2, 0x12B5 },
        { 0x12B8, 0x12BE },
        { 0x12C0, 0x12C0 },
        { 0x12C2, 0x12C5 },
        { 0x12C8, 0x12CE },
        { 0x12D0, 0x12D6 },
        { 0x12D8, 0x12EE },
        { 0x12F0, 0x130E },
        { 0x1310, 0x1310 },
        { 0x1312, 0x1315 },
        { 0x1318, 0x131E },
        { 0x1320, 0x1346 },
        { 0x1348, 0x135A },
        { 0x1369, 0x137C },
        { 0x13A0, 0x13F4 },
        { 0x1401, 0x166C },
        { 0x166F, 0x1676 },
        { 0x1681, 0x169A },
        { 0x16A0, 0x16EA },
        { 0x16EE, 0x16F0 },
        { 0x1780, 0x17B3 },
        { 0x17E0, 0x17E9 },
        { 0x1810, 0x1819 },
        { 0x1820, 0x1877 },
        { 0x1880, 0x18A8 },
        { 0x1E00, 0x1E9B },
        { 0x1EA0, 0x1EF9 },
        { 0x1F00, 0x1F15 },
        { 0x1F18, 0x1F1D },
        { 0x1F20, 0x1F45 },
        { 0x1F48, 0x1F4D },
        { 0x1F50, 0x1F57 },
        { 0x1F59, 0x1F59 },
        { 0x1F5B, 0x1F5B },
        { 0x1F5D, 0x1F5D },
        { 0x1F5F, 0x1F7D },
        { 0x1F80, 0x1FB4 },
        { 0x1FB6, 0x1FBC },
        { 0x1FBE, 0x1FBE },
        { 0x1FC2, 0x1FC4 },
        { 0x1FC6, 0x1FCC },
        { 0x1FD0, 0x1FD3 },
        { 0x1FD6, 0x1FDB },
        { 0x1FE0, 0x1FEC },
        { 0x1FF2, 0x1FF4 },
        { 0x1FF6, 0x1FFC },
        { 0x2070, 0x2070 },
        { 0x2074, 0x2079 },
        { 0x207F, 0x2089 },
        { 0x2102, 0x2102 },
        { 0x2107, 0x2107 },
        { 0x210A, 0x2113 },
        { 0x2115, 0x2115 },
        { 0x2119, 0x211D },
        { 0x2124, 0x2124 },
        { 0x2126, 0x2126 },
        { 0x2128, 0x2128 },
        { 0x212A, 0x212D },
        { 0x212F, 0x2131 },
        { 0x2133, 0x2139 },
        { 0x2153, 0x2183 },
        { 0x2460, 0x249B },
        { 0x24EA, 0x24EA },
        { 0x2776, 0x2793 },
        { 0x3005, 0x3007 },
        { 0x3021, 0x3029 },
        { 0x3031, 0x3035 },
        { 0x3038, 0x303A },
        { 0x3041, 0x3094 },
        { 0x309D, 0x309E },
        { 0x30A1, 0x30FA },
        { 0x30FC, 0x30FE },
        { 0x3105, 0x312C },
        { 0x3131, 0x318E },
        { 0x3192, 0x3195 },
        { 0x31A0, 0x31B7 },
        { 0x3220, 0x3229 },
        { 0x3280, 0x3289 },
        { 0x3400, 0x3400 },
        { 0x4DB5, 0x4DB5 },
        { 0x4E00, 0x4E00 },
        { 0x9FA5, 0x9FA5 },
        { 0xA000, 0xA48C },
        { 0xAC00, 0xAC00 },
        { 0xD7A3, 0xD7A3 },
        { 0xF900, 0xFA2D },
        { 0xFB00, 0xFB06 },
        { 0xFB13, 0xFB17 },
        { 0xFB1D, 0xFB1D },
        { 0xFB1F, 0xFB28 },
        { 0xFB2A, 0xFB36 },
        { 0xFB38, 0xFB3C },
        { 0xFB3E, 0xFB3E },
        { 0xFB40, 0xFB41 },
        { 0xFB43, 0xFB44 },
        { 0xFB46, 0xFBB1 },
        { 0xFBD3, 0xFD3D },
        { 0xFD50, 0xFD8F },
        { 0xFD92, 0xFDC7 },
        { 0xFDF0, 0xFDFB },
        { 0xFE70, 0xFE72 },
        { 0xFE74, 0xFE74 },
        { 0xFE76, 0xFEFC },
        { 0xFF10, 0xFF19 },
        { 0xFF21, 0xFF3A },
        { 0xFF41, 0xFF5A },
        { 0xFF66, 0xFFBE },
        { 0xFFC2, 0xFFC7 },
        { 0xFFCA, 0xFFCF },
        { 0xFFD2, 0xFFD7 }
      // clang-format on
  };

  CharRange search = {ch, ch};
  const CharRange* end = mozilla::ArrayEnd(alphanumericRanges);
  const CharRange* element =
      std::lower_bound(&alphanumericRanges[0], end, search);
  if (element == end) {
    return false;
  }
  return element->lower <= ch && ch <= element->upper;
}