%option noyywrap
%option nounput
%option noinput
%{
#include <iostream>
#include <cstdlib>
#include <vector>
#include "ast.hpp"
  using namespace std;
#include "parser.tab.hpp"
  
%}


%%
"if"               return if_token;
"then"             return then_token;
"else"             return else_token;
"extern"           return extern_token;
"def"              return def_token;
[a-zA-Z_][a-zA-Z0-9_]*          {
  yylval.s = new string(yytext);
  return id_token;
}
[0-9]+(\.[0-9]*)?  {
  yylval.d = atof(yytext);
  return num_token;
}
[-+*/(),;<>]         return *yytext;
[ \t\n]            {  }
.  {
  cerr << "Leksicka greska: neprepoznat karakter " << *yytext << endl;
  exit(EXIT_FAILURE);
}
%%