type token = 
|STRING of string
|LPAREN
|RPAREN
|EOF
|HASH_SEMI
val sexp : (Lexing.lexbuf -> token) -> Lexing.lexbuf -> Type.t
val sexp_opt : (Lexing.lexbuf -> token) -> Lexing.lexbuf -> Type.t option
val sexps : (Lexing.lexbuf -> token) -> Lexing.lexbuf -> Type.t list
val rev_sexps : (Lexing.lexbuf -> token) -> Lexing.lexbuf -> Type.t list