getRange method
Get all tokens from start..stop inclusively */
Implementation
List<Token>? getRange(int start, [int? stop]) {
stop = stop ?? start;
if (start < 0 || stop < 0) return null;
lazyInit();
final subset = <Token>[];
if (stop >= tokens.length) stop = tokens.length - 1;
for (var i = start; i <= stop; i++) {
final t = tokens[i];
if (t.type == Token.EOF) break;
subset.add(t);
}
return subset;
}