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() {
  if (file != null || line != null) {
    final String fileStr = file == null ? '' : '$file:';
    final String lineStr = line == null ? '' : '$line:';
    return '$runtimeType: $fileStr$lineStr: $message';
  } else {
    return '$runtimeType: $message';
  }
}