Pre_sexp.Parse_pos
type t = {
mutable text_line : int;
mutable text_char : int;
mutable global_offset : int;
mutable buf_pos : int;
}
val create : ?text_line:int -> ?text_char:int -> ?buf_pos:int -> ?global_offset:int -> unit -> t
val with_buf_pos : t -> int -> t