parseArgColor method

Color? parseArgColor({ required bool optional, })

Implementation

Color? parseArgColor({required bool optional}) {
  currArgParsingContext.newArgument(optional: optional);
  final i = currArgParsingContext.currArgNum;
  final consumeSpaces =
      (i > 0 && !optional) || (i == 0 && !optional && this.mode == Mode.math);
  if (consumeSpaces) {
    this.consumeSpaces();
  }
  // final res = this.parseColorGroup(optional: optional);
  final res = this._parseStringGroup('color', optional: optional);
  if (res == null) {
    _assertOptionalBeforeReturn(null, optional: optional);
    return null;
  }

  final match3 = _parseColorRegex3.firstMatch(res.text);

  if (match3 != null) {
    final color = colorByName[match3[0]!.toLowerCase()];
    if (color != null) {
      return color;
    }
  }

  final match2 = _parseColorRegex2.firstMatch(res.text);
  if (match2 != null) {
    return Color.fromARGB(
      0xff,
      int.parse(match2[1]!, radix: 16),
      int.parse(match2[2]!, radix: 16),
      int.parse(match2[3]!, radix: 16),
    );
  }

  final match1 = _parseColorRegex1.firstMatch(res.text);
  if (match1 != null) {
    return Color.fromARGB(
      0xff,
      int.parse(match1[1]! * 2, radix: 16),
      int.parse(match1[2]! * 2, radix: 16),
      int.parse(match1[3]! * 2, radix: 16),
    );
  }
  throw ParseException("Invalid color: '${res.text}'");
}