%{
#include <stdio.h>
#include "proto-color.h"
extern int yylex(); 
int yyerror (char const *message) { 
  fprintf(stderr,RED("<%s>")"\n", message);
  return 0;
}

void Prompt(){ printf("yash> "); } /* Yet Another Shell */

%}

%error-verbose
%token HELLO THANKS FUCK BYE
%token NEWLINE CMD_SEP

%% 
Shell   :                     {Prompt();}
        | Shell Line  NEWLINE {Prompt();}
        | Shell error NEWLINE {yyerrok; printf(BLUE("Ligne invalide")"\n"); Prompt();}
;
Line    : Command
        | Line  CMD_SEP Command
        | error CMD_SEP /* Action a l'interieur d'une regle pour avoir le printf dans l'ordre */
                        {yyerrok; printf(BLUE("Command invalide: \n"));} 
                        Command
;
Command : 
        | Builtin
//      | Others
;
Builtin :  HELLO    {printf("Nice to meet you\n");}
	|  THANKS   {printf("You are welcome\n");}
	|  FUCK     {yyerror("Semantic Error : Censored !"); YYERROR;}
	|  BYE      {printf("See you\n"); return(0);}
;
%%

int main(void) { return yyparse(); }