toString method
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 (source is String) {
final s = source as String;
if (pos >= s.length) {
return '$pos:';
}
var length = s.length - pos;
length = length > 40 ? 40 : length;
final string = s.substring(pos, pos + length);
return '$pos:$string';
} else {
return super.toString();
}
}