@Override
public Token parse() {
Token next = first.getNext();
if (!next.isOperator(Operator.BRACKET_LEFT))
throw new RuntimeException("Expected '(' after WHILE, found: " + next);
next = next.getNext();
testExp = new BooleanExpression(next, scope);
next = testExp.parse();
if (!next.isOperator(Operator.BRACKET_RIGHT))
throw new RuntimeException("Expected ')' after WHILE condition, found: " + next);
next = next.getNext();
if (!next.isNewline()) throw new RuntimeException("Expected newline, found: " + next);
next = next.getNext();
Keyword[] target = {Keyword.END};
statements = new StatementGroup(next, target, scope);
next = statements.parse();
return next.getNext();
}
