SourceEdit _removeFromBlockMap()

in lib/src/map_mutations.dart [167:210]

• 30 lines of code
• 8 McCabe index (conditional complexity)

SourceEdit _removeFromBlockMap(
    YamlEditor yamlEdit, YamlMap map, YamlNode keyNode, YamlNode valueNode) {
  final keySpan = keyNode.span;
  var end = getContentSensitiveEnd(valueNode);
  final yaml = yamlEdit.toString();

  if (map.length == 1) {
    final start = map.span.start.offset;
    return SourceEdit(start, end - start, '{}');
  }

  var start = keySpan.start.offset;

  /// Adjust the end to clear the new line after the end too.
  ///
  /// We do this because we suspect that our users will want the inline
  /// comments to disappear too.
  final nextNewLine = yaml.indexOf('\n', end);
  if (nextNewLine != -1) {
    end = nextNewLine + 1;
  }

  final nextNode = getNextKeyNode(map, keyNode);

  if (start > 0) {
    final lastHyphen = yaml.lastIndexOf('-', start - 1);
    final lastNewLine = yaml.lastIndexOf('\n', start - 1);
    if (lastHyphen > lastNewLine) {
      start = lastHyphen + 2;

      /// If there is a `-` before the node, and the end is on the same line
      /// as the next node, we need to add the necessary offset to the end to
      /// make sure the next node has the correct indentation.
      if (nextNode != null &&
          nextNode.span.start.offset - end <= nextNode.span.start.column) {
        end += nextNode.span.start.column;
      }
    } else if (lastNewLine > lastHyphen) {
      start = lastNewLine + 1;
    }
  }

  return SourceEdit(start, end - start, '');
}