toString method

@override String toString()

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string representation.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Implementation

@override
String toString() {
  var output = StringBuffer();
  var colors = useColors && _errorColors.containsKey(level);
  var levelColor = colors ? _errorColors[level] : null;
  if (colors) output.write(levelColor);
  output
    ..write(_errorLabel[level])
    ..write(' ');
  if (colors) output.write(_noColor);

  if (span == null) {
    output.write(message);
  } else {
    output.write('on ');
    output.write(span!.message(message, color: levelColor));
  }

  return output.toString();
}