mirror of
https://github.com/c-cube/sidekick.git
synced 2026-01-23 09:56:40 -05:00
23 lines
534 B
OCaml
23 lines
534 B
OCaml
|
|
(** {1 A backtracking stack} *)
|
|
|
|
type 'a t
|
|
|
|
val create : unit -> 'a t
|
|
|
|
val push : 'a t -> 'a -> unit
|
|
(** Push an element onto the stack *)
|
|
|
|
val push_if_nonzero_level : 'a t -> 'a -> unit
|
|
(** Push an element onto the stack if level > 0 *)
|
|
|
|
val n_levels : _ t -> int
|
|
(** Number of levels *)
|
|
|
|
val push_level : _ t -> unit
|
|
(** Push a backtracking point *)
|
|
|
|
val pop_levels : 'a t -> int -> f:('a -> unit) -> unit
|
|
(** [pop_levels st n ~f] removes [n] levels, calling [f] on every removed item *)
|
|
|
|
val iter : f:('a -> unit) -> 'a t -> unit
|