%option noyywrap
%option nounput
%{
#include <iostream>
#include <cstdlib>

using namespace std;
#include <vector>
#include "syntree.hpp"


#include "parser.tab.hpp"


%}

%%
begin          return begin_token;
end            return end_token;
print          return print_token;
while          return while_token;
do             return do_token;
if             return if_token;
then           return then_token;
else           return else_token;
[a-zA-Z]+      { yylval.s = new string(yytext); return id_token; }
[0-9]+         { yylval.x = atoi(yytext); return num_token; }
[:=;+*.<()]    return *yytext;
[\n\t ]        {  }
.              {
  cerr << "Leksicka greska: Neprepoznat karakter '" << *yytext << "'" << endl;
  exit(EXIT_FAILURE);
}
%%