ligo/src/lib_storage/store_sigs.ml
2018-06-30 17:41:32 +02:00

166 lines
5.5 KiB
OCaml

(*****************************************************************************)
(* *)
(* Open Source License *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
(* *)
(* Permission is hereby granted, free of charge, to any person obtaining a *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
(* and/or sell copies of the Software, and to permit persons to whom the *)
(* Software is furnished to do so, subject to the following conditions: *)
(* *)
(* The above copyright notice and this permission notice shall be included *)
(* in all copies or substantial portions of the Software. *)
(* *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
(* DEALINGS IN THE SOFTWARE. *)
(* *)
(*****************************************************************************)
module type NAME = sig
val name : string list
end
module type VALUE = sig
type t
val of_bytes: MBytes.t -> t tzresult
val to_bytes: t -> MBytes.t
end
module type ENCODED_VALUE = sig
type t
val encoding: t Data_encoding.t
end
module type INDEX = sig
type t
val path_length: int
val to_path: t -> string list -> string list
val of_path: string list -> t option
end
module type SINGLE_STORE = sig
type t
type value
val known: t -> bool Lwt.t
val read: t -> value tzresult Lwt.t
val read_opt: t -> value option Lwt.t
val read_exn: t -> value Lwt.t
val store: t -> value -> unit Lwt.t
val remove: t -> unit Lwt.t
end
module type STORE = sig
type t
type key = string list
type value = MBytes.t
val known: t -> key -> bool Lwt.t
val read: t -> key -> value tzresult Lwt.t
val read_opt: t -> key -> value option Lwt.t
val read_exn: t -> key -> value Lwt.t
val store: t -> key -> value -> unit Lwt.t
val remove: t -> key -> unit Lwt.t
val known_dir: t -> key -> bool Lwt.t
val remove_dir: t -> key -> unit Lwt.t
val fold:
t -> key -> init:'a ->
f:([ `Key of key | `Dir of key ] -> 'a -> 'a Lwt.t) ->
'a Lwt.t
val keys: t -> key -> key list Lwt.t
val fold_keys: t -> key -> init:'a -> f:(key -> 'a -> 'a Lwt.t) -> 'a Lwt.t
end
module type SET_STORE = sig
type t
type elt
val known: t -> elt -> bool Lwt.t
val store: t -> elt -> unit Lwt.t
val remove: t -> elt -> unit Lwt.t
val elements: t -> elt list Lwt.t
val remove_all: t -> unit Lwt.t
val iter: t -> f:(elt -> unit Lwt.t) -> unit Lwt.t
val fold: t -> init:'a -> f:(elt -> 'a -> 'a Lwt.t) -> 'a Lwt.t
end
module type BUFFERED_SET_STORE = sig
include SET_STORE
module Set : Set.S with type elt = elt
val read_all: t -> Set.t Lwt.t
val store_all: t -> Set.t -> unit Lwt.t
end
module type MAP_STORE = sig
type t
type key
type value
val known: t -> key -> bool Lwt.t
val read: t -> key -> value tzresult Lwt.t
val read_opt: t -> key -> value option Lwt.t
val read_exn: t -> key -> value Lwt.t
val store: t -> key -> value -> unit Lwt.t
val remove: t -> key -> unit Lwt.t
val keys: t -> key list Lwt.t
val bindings: t -> (key * value) list Lwt.t
val remove_all: t -> unit Lwt.t
val iter: t -> f:(key -> value -> unit Lwt.t) -> unit Lwt.t
val iter_keys: t -> f:(key -> unit Lwt.t) -> unit Lwt.t
val fold: t -> init:'a -> f:(key -> value -> 'a -> 'a Lwt.t) -> 'a Lwt.t
val fold_keys: t -> init:'a -> f:(key -> 'a -> 'a Lwt.t) -> 'a Lwt.t
end
module type BUFFERED_MAP_STORE = sig
include MAP_STORE
module Map : Map.S with type key = key
val read_all: t -> value Map.t Lwt.t
val store_all: t -> value Map.t -> unit Lwt.t
end
module type INDEXED_STORE = sig
type t
type key
module Store : STORE with type t = t * key
val remove_all: t -> key -> unit Lwt.t
val fold_indexes: t -> init:'a -> f:(key -> 'a -> 'a Lwt.t) -> 'a Lwt.t
val indexes: t -> key list Lwt.t
val resolve_index: t -> string list -> key list Lwt.t
module Make_set (N : NAME)
: SET_STORE with type t = t
and type elt = key
module Make_buffered_set (N : NAME) (Set : Set.S with type elt = key)
: BUFFERED_SET_STORE with type t = t
and type elt = key
and module Set = Set
module Make_map (N : NAME) (V : VALUE)
: MAP_STORE with type t = t
and type key = key
and type value = V.t
module Make_buffered_map
(N : NAME) (V : VALUE) (Map : Map.S with type key = key)
: BUFFERED_MAP_STORE with type t = t
and type key = key
and type value = V.t
and module Map = Map
end