113 lines
3.2 KiB
OCaml
113 lines
3.2 KiB
OCaml
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(** Tezos - Manipulation and creation of hashes *)
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(** {2 Hash Types} ************************************************************)
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(** The signature of an abstract hash type, as produced by functor
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{!Make_SHA256}. The {!t} type is abstracted for separating the
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various kinds of hashes in the system at typing time. Each type is
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equipped with functions to use it as is of as keys in the database
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or in memory sets and maps. *)
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module type MINIMAL_HASH = sig
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type t
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val name: string
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val title: string
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val hash_bytes: MBytes.t list -> t
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val hash_string: string list -> t
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val size: int (* in bytes *)
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val compare: t -> t -> int
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val equal: t -> t -> bool
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val of_hex: string -> t
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val to_hex: t -> string
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val of_string: string -> t
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val to_string: t -> string
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val to_bytes: t -> MBytes.t
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val of_bytes: MBytes.t -> t
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val read: MBytes.t -> int -> t
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val write: MBytes.t -> int -> t -> unit
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val to_path: t -> string list
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val of_path: string list -> t
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val prefix_path: string -> string list
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val path_len: int
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end
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module type HASH = sig
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include MINIMAL_HASH
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val of_b48check: string -> t
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val to_b48check: t -> string
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val to_short_b48check: t -> string
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val encoding: t Data_encoding.t
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val pp: Format.formatter -> t -> unit
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val pp_short: Format.formatter -> t -> unit
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type Base48.data += Hash of t
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val b48check_encoding: t Base48.encoding
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end
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(** {2 Building Hashes} *******************************************************)
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(** The parameters for creating a new Hash type using
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{!Make_Blake2B}. Both {!name} and {!title} are only informative,
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used in error messages and serializers. *)
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module type Name = sig
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val name : string
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val title : string
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val size : int option
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end
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module type PrefixedName = sig
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include Name
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val b48check_prefix : string
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end
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(** Builds a new Hash type using Sha256. *)
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module Make_minimal_Blake2B (Name : Name) : MINIMAL_HASH
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module Make_Blake2B
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(Register : sig
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val register_encoding:
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prefix: string ->
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to_raw: ('a -> string) ->
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of_raw: (string -> 'a option) ->
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wrap: ('a -> Base48.data) ->
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'a Base48.encoding
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end)
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(Name : PrefixedName) : HASH
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(** Builds a Set of values of some Hash type. *)
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module Hash_set (Hash : HASH) : sig
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include Set.S with type elt = Hash.t
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val encoding: t Data_encoding.t
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end
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(** Builds a Map using some Hash type as keys. *)
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module Hash_map (Hash : HASH) : sig
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include Map.S with type key = Hash.t
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val encoding: 'a Data_encoding.t -> 'a t Data_encoding.t
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end
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(** {2 Predefined Hashes } ****************************************************)
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(** Blocks hashes / IDs. *)
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module Block_hash : HASH
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module Block_hash_set : Set.S with type elt = Block_hash.t
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module Block_hash_map : module type of Hash_map (Block_hash)
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(** Operations hashes / IDs. *)
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module Operation_hash : HASH
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module Operation_hash_set : Set.S with type elt = Operation_hash.t
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module Operation_hash_map : module type of Hash_map (Operation_hash)
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(** Protocol versions / source hashes. *)
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module Protocol_hash : HASH
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module Protocol_hash_set : Set.S with type elt = Protocol_hash.t
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module Protocol_hash_map : module type of Hash_map (Protocol_hash)
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