%%

%standalone
%class Calc

nl        =  \n|\r|\r\n
intNumber    =  [1-9][0-9]*
double          = [aa]|[bb]|[a-z*]|[aa][bb]

%%

{intNumber}    {System.out.println("NUMBER: " +yytext());}


"+"        {System.out.println("PLUS");}
"-"        {System.out.println("MINUS");}
"*"        {System.out.println("STAR");}
"/"        {System.out.println("DIV");}


"("        {System.out.println("OPEN_BRACKET");}
")"        {System.out.println("CLOSE_BRACKET");}

"="        {System.out.println("EQUAL\n");}

{nl}|" "|\t     {;}

.        {System.out.println("Error: " + yytext());}