55 lines
2.4 KiB
OCaml
55 lines
2.4 KiB
OCaml
(**************************************************************************)
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(* *)
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(* Copyright (c) 2014 - 2017. *)
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(* Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
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(* *)
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(* All rights reserved. No warranty, explicit or implicit, provided. *)
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(* *)
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(**************************************************************************)
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(** Tezos Shell Module - Chain Traversal API *)
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open State
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val path: Block.t -> Block.t -> Block.t list option Lwt.t
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(** If [h1] is an ancestor of [h2] in the current [state],
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then [path state h1 h2] returns the chain of block from
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[h1] (excluded) to [h2] (included). Returns [None] otherwise. *)
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val common_ancestor: Block.t -> Block.t -> Block.t Lwt.t
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(** [common_ancestor state h1 h2] returns the first common ancestors
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in the history of blocks [h1] and [h2]. *)
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val iter_predecessors:
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?max:int ->
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?min_fitness:Fitness.t ->
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?min_date:Time.t ->
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Block.t list ->
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f:(Block.t -> unit Lwt.t) ->
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unit Lwt.t
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(** [iter_predecessors state blocks f] iter [f] on [blocks] and
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their recursive predecessors. Blocks are visited with a
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decreasing fitness (then decreasing timestamp). If the optional
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argument [max] is provided, the iteration is stopped after [max]
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visited block. If [min_fitness] id provided, blocks with a
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fitness lower than [min_fitness] are ignored. If [min_date],
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blocks with a fitness lower than [min_date] are ignored. *)
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val new_blocks:
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from_block:Block.t -> to_block:Block.t ->
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(Block.t * Block.t list) Lwt.t
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(** [new_blocks ~from_block ~to_block] returns a pair [(ancestor,
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path)], where [ancestor] is the common ancestor of [from_block]
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and [to_block] and where [path] is the chain from [ancestor]
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(excluded) to [to_block] (included). The function raises an
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exception when the two provided blocks do not belong the the same
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[net]. *)
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val live_blocks:
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Block.t -> int -> (Block_hash.Set.t * Operation_hash.Set.t) Lwt.t
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(** [live_blocks b n] return a pair [(blocks,operations)] where
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[blocks] is the set of arity [n], that contains [b] and its [n-1]
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predecessors. And where [operations] is the set of operations
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included in those blocks.
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*)
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