%{
#include <stdio.h>

%}

%start program
%token START END 

 /* each of the tokens mentioned in the Lex file need to be listed here */

%token DIGITS LETTERS 

%%                   /* beginning of rules section */

program :  START statements END 
| { yyerror("didn't find a program"); }
;

statements : statement
| statement SEMI statements
;

/* there may be a couple of dozen more productions to be placed here */
/* no need to worry about $$, $1, and so forth.  not needed to validate a Gimli program */

/* the expression grammar from the text can be used ALMOST verbatim here */

%%
main()
{
  fprintf(stderr, "Starting parse\n");  
  yyparse();
  fprintf(stderr, "Looks good\n");  
}

yyerror(s)
char *s;
{
  fprintf(stderr, "%s\n", s);
}

yywrap()
{
  return(1);
}