int getMapIndentation()

in lib/src/utils.dart [209:237]

• 19 lines of code
• 7 McCabe index (conditional complexity)

int getMapIndentation(String yaml, YamlMap map) {
  if (map.style == CollectionStyle.FLOW) return 0;

  /// An empty block map doesn't really exist.
  if (map.isEmpty) {
    throw UnsupportedError('Unable to get indentation for empty block map');
  }

  /// Use the number of spaces between the last key and the newline as
  /// indentation.
  final lastKey = map.nodes.keys.last as YamlNode;
  final lastSpanOffset = lastKey.span.start.offset;
  final lastNewLine = yaml.lastIndexOf('\n', lastSpanOffset);
  final lastQuestionMark = yaml.lastIndexOf('?', lastSpanOffset);

  if (lastQuestionMark == -1) {
    if (lastNewLine == -1) return lastSpanOffset;
    return lastSpanOffset - lastNewLine - 1;
  }

  /// If there is a question mark, it might be a complex key. Check if it
  /// is on the same line as the key node to verify.
  if (lastNewLine == -1) return lastQuestionMark;
  if (lastQuestionMark > lastNewLine) {
    return lastQuestionMark - lastNewLine - 1;
  }

  return lastSpanOffset - lastNewLine - 1;
}