import java_cup.runtime.*;
import java.io.*;
%%

%notunix
%implements java_cup.runtime.Scanner
%type Symbol
%function next_token
%class Calc2Scanner
%eofval{ return null;
%eofval}

IDENTIFIER = [a-zA-Z][a-zA-Z0-9]*
NUMBER = [0-9]+
%%
"+" { return new Symbol(Calc2Symbol.PLUS, yytext()); }
"*" { return new Symbol(Calc2Symbol.MULTI, yytext()); }
"=" { return new Symbol(Calc2Symbol.EQUAL, yytext()); }
";" { return new Symbol(Calc2Symbol.SEMI, yytext()); }
"(" { return new Symbol(Calc2Symbol.LPAREN, yytext()); }
")" { return new Symbol(Calc2Symbol.RPAREN, yytext()); }
{IDENTIFIER} {return new Symbol(Calc2Symbol.ID, yytext()); }
{NUMBER} { return new Symbol(Calc2Symbol.NUMBER, new Integer(yytext()));}  
\r|\n {System.out.println("newline" + yytext()); }
. {System.out.println("illegal input" + yytext()); }