A Rough Grammar For lispy_null

Grammatical Productions:

Program
  : Program__item Program__rlist
  | /* empty */
  ;
Program__rlist
  : Program__rlist Program__item
  | /* empty */
  ;
Program__item
  : Apply
  ;
Apply
  : leftParen identifier ApplyList rightParen
  ;
ApplyList
  : ApplyList__item ApplyList__rlist
  | /* empty */
  ;
ApplyList__rlist
  : ApplyList__rlist ApplyList__item
  | /* empty */
  ;
ApplyList__item
  : Apply
  | identifier
  | number
  | string
  | null
  ;


Lexical Rules:


"("             {return leftParen;}
")"             {return rightParen;}
"null"          {return null;}
[[:alpha:]][[:alnum:]]*  {return identifier;}
[[:digit:]]+    {return number;}
'[^']*'         {return string;}
[^[:print:]]|[\n[:blank:]]  /* ignore */
.               {return LEX_ERROR;}