infixCalc.l

%{  
	#include <stdlib.h>
	#include <string.h>
	#include "struct.h"
	#include "y.tab.h"

	//extern int yylval
	int c;

%}

%%

exit				{return EXIT;}

^[a-z][\n]			{c = yytext[0];
					yylval.letter = c - 'a';
					return PRINTLETTER;}
				 
[0-9]+				{yylval.number = atoi(yytext);
					return INTEGER;}

True|False			{if(yytext[0] == 'T')	
						yylval.boolean = 1;
					else
						yylval.boolean = 0;
					return BOOLEAN; }

"=="				{ return EQUAL; }
"!="				{ return NOTEQUAL; }
"<="				{ return MEQUAL; }
">="				{ return GEQUAL; }

if					{ return IF; }
then				{ return THEN; }
else				{ return ELSE; }

[a-z]				{c = yytext[0];
					yylval.letter = c - 'a';
					return LETTER;}
[ \t\r]

\n					return '\n';
.					return yytext[0];

%%


int yywrap()
{
   return(1);
}