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 (isEmpty) return '[]';
final buf = StringBuffer();
buf.write('[');
for (var i = 0; i < returnStates.length; i++) {
if (i > 0) buf.write(', ');
if (returnStates[i] == PredictionContext.EMPTY_RETURN_STATE) {
buf.write(r'$');
continue;
}
buf.write(returnStates[i]);
if (parents[i] != null) {
buf.write(' ');
buf.write(parents[i].toString());
} else {
buf.write('null');
}
}
buf.write(']');
return buf.toString();
}