void _formatPluralOrdinalBlock()

in lib/message_format.dart [356:420]
54 lines of code
10 McCabe index (conditional complexity)

  void _formatPluralOrdinalBlock(
      Map<String, Object> parsedBlocks,
      var namedParameters,
      Function(num, String) pluralSelector,
      bool ignorePound,
      Queue<String> result) {
    var argumentName = parsedBlocks['argumentName'];
    var argumentOffset = parsedBlocks['argumentOffset'];
    var pluralValue = namedParameters[argumentName];

    if (!_isDef(pluralValue)) {
      result.add('Undefined parameter - $argumentName');
      return;
    }

    var numPluralValue =
        pluralValue is num ? pluralValue : double.tryParse(pluralValue);
    if (numPluralValue == null) {
      result.add('Invalid parameter - $argumentName');
      return;
    }

    var numArgumentOffset = argumentOffset is num
        ? argumentOffset
        : double.tryParse(argumentOffset as String);
    if (numArgumentOffset == null) {
      result.add('Invalid offset - $argumentOffset');
      return;
    }

    var diff = numPluralValue - numArgumentOffset;

    // Check if there is an exact match.
    var option =
        parsedBlocks[namedParameters[argumentName]] as Queue<_BlockTypeAndVal>?;
    if (!_isDef(option)) {
      option = parsedBlocks[namedParameters[argumentName].toString()]
          as Queue<_BlockTypeAndVal>?;
    }
    if (!_isDef(option)) {
      var item = pluralSelector(diff.abs(), _locale);
      _checkAndThrow(item is String, 'Invalid plural key.');

      option = parsedBlocks[item] as Queue<_BlockTypeAndVal>?;

      // If option is not provided fall back to "other".
      if (!_isDef(option)) {
        option = parsedBlocks[_other] as Queue<_BlockTypeAndVal>?;
      }

      _checkAndThrow(option != null,
          'Invalid option or missing other option for plural block.');
    }

    var pluralResult = Queue<String>();
    _formatBlock(option!, namedParameters, ignorePound, pluralResult);
    var plural = pluralResult.join('');
    _checkAndThrow(plural is String, 'Empty block in plural.');
    if (ignorePound) {
      result.add(plural);
    } else {
      var localeAwareDiff = _numberFormat.format(diff);
      result.add(plural.replaceAll('#', localeAwareDiff));
    }
  }