/*
    calculator.lex

    Jeff Ondich, 5/30/10
    Bison example, based on several found on-line, especially
    http://www.cs.ucr.edu/~lgao/teaching/calc/calc.y
    by Lan Gao.

    This lex/flex file tokenizes the input for the calculator.
*/

%{
#include "calculator.h"
#include "tok.h"
%}

digit       [0-9]
integer     {digit}+

%%

{integer}   { yylval.value = atoi(yytext); return INTEGER; }
"+"         { yylval.value = 0; return PLUS; }
"*"         { yylval.value = 0; return MULT; }

[ \t]*      {}
[\n]        {}

.           { yyerror("Trouble in tokenizer."); }