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%{
#include <string.h>
#include <stdlib.h>
#include "parser.tab.h"
extern int yylex();
extern size_t line_number;
%}
%option noyywrap
%%
^[a-zA-Z]+ { yylval.symbol = strdup(yytext); return T_INSTRUCTION; }
%*[a-zA-Z\_\-]+[a-zA-Z0-9\_\-]* { yylval.symbol = strdup(yytext); return T_LABEL; }
0x[0-9A-Fa-f]+ { yylval.i_val = atoi(yytext); return T_INTEGER; }
[0-9]+ { yylval.i_val = atoi(yytext); return T_INTEGER; }
-*[0-9]*\.*[0-9]* { yylval.i_val = atof(yytext); return T_FLOAT; }
\".*\" {
yylval.s_val = strdup(yytext+1);
char *const close_paren = strrchr(yylval.s_val, '"');
if (close_paren != NULL) {
*close_paren = '\0';
}
return T_STRING;
}
, { return T_COMMA; }
\$ { return T_IMMEDIATE; }
[ \t] ;
\n { ++line_number; return T_ENDL; }
. ;
%%
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