visitWhileStmt method
Implementation
@override
String visitWhileStmt(WhileStmt whileStmt) {
final output = StringBuffer();
output.write('${_lexicon.kWhile} ');
final conditionString = formatAST(whileStmt.condition);
output.write('$conditionString ');
final loopString = formatAST(whileStmt.loop);
output.write(loopString);
return output.toString();
}