Parameter `Make.1-Sexp`

type t
type loc

val make_loc : ((int * int) -> (int * int) -> string -> loc) option: If provided, builds a location from a pair of (line,column) positions, and a (possibly dummy) filename

val atom_with_loc : loc:loc -> string -> t
val list_with_loc : loc:loc -> t list -> t
val atom : string -> t
val list : t list -> t
val match_ : t -> atom:(string -> 'a) -> list:(t list -> 'a) -> 'a