public Statment SS(ref Statments ss)
{
Statment s1 = S();
if (s1 != null)
{
ss.ADD(s1);
if (Expect(TokenKind.EOF))
{
return(null);
}
else
{
lex.UngetToken();
}
if (Expect(TokenKind.ENDFOR, TokenKind.ENDIF, TokenKind.ELSE))
{
lex.UngetToken();
return(s1);
}
else
{
lex.UngetToken();
return(SS(ref ss));
}
}
return(null);
}
public bool ss()
{
if (s())
{
if (Expect(TokenKind.EOF))
{
return(true);
}
else
{
lex.UngetToken();//Looking forward to determine if the Sequence of statements is finished
if (Expect(TokenKind.ENDFOR, TokenKind.ENDIF, TokenKind.ELSE))
{
lex.UngetToken();
return(true);
}
lex.UngetToken();
return(ss());
}
}
else
{
return(false);
}
}