Module `Tezos_context_memory.Context`Source

Implementation of Tezos context fully in memory.

include Tezos_context_sigs.Context.S

include Tezos_context_sigs.Context.VIEW
  with type key = string list
   and type value = bytes

Sourcetype t

The type for context views.

Sourcetype key = string list

The type for context keys.

Sourcetype value = bytes

The type for context values.

Sourcetype tree

The type for context trees.

Getters

Sourceval mem : t -> key -> bool Lwt.t

mem t k is an Lwt promise that resolves to true iff k is bound to a value in t.

Sourceval mem_tree : t -> key -> bool Lwt.t

mem_tree t k is like mem but for trees.

Sourceval find : t -> key -> value option Lwt.t

find t k is an Lwt promise that resolves to Some v if k is bound to the value v in t and None otherwise.

Sourceval find_tree : t -> key -> tree option Lwt.t

find_tree t k is like find but for trees.

Sourceval list : t -> ?offset:int -> ?length:int -> key -> (string * tree) list Lwt.t

list t key is the list of files and sub-nodes stored under k in t. The result order is not specified but is stable.

offset and length are used for pagination.

Setters

Sourceval add : t -> key -> value -> t Lwt.t

add t k v is an Lwt promise that resolves to c such that:

k is bound to v in c;
and c is similar to t otherwise.

If k was already bound in t to a value that is physically equal to v, the result of the function is a promise that resolves to t. Otherwise, the previous binding of k in t disappears.

Sourceval add_tree : t -> key -> tree -> t Lwt.t

add_tree is like add but for trees.

Sourceval remove : t -> key -> t Lwt.t

remove t k v is an Lwt promise that resolves to c such that:

k is unbound in c;
and c is similar to t otherwise.

Folding

Source

val fold : 
  ?depth:Tezos_context_sigs.Context.depth ->
  t ->
  key ->
  order:[ `Sorted | `Undefined ] ->
  init:'a ->
  f:(key -> tree -> 'a -> 'a Lwt.t) ->
  'a Lwt.t

fold ?depth t root ~order ~init ~f recursively folds over the trees and values of t. The f callbacks are called with a key relative to root. f is never called with an empty key for values; i.e., folding over a value is a no-op.

The depth is 0-indexed. If depth is set (by default it is not), then f is only called when the conditions described by the parameter is true:

Eq d folds over nodes and contents of depth exactly d.
Lt d folds over nodes and contents of depth strictly less than d.
Le d folds over nodes and contents of depth less than or equal to d.
Gt d folds over nodes and contents of depth strictly more than d.
Ge d folds over nodes and contents of depth more than or equal to d.

If order is `Sorted (the default), the elements are traversed in lexicographic order of their keys. For large nodes, it is memory-consuming, use `Undefined for a more memory efficient fold.

Sourcemodule Tree : sig ... end

Sourcetype index

Sourceval index : t -> index

Sourceval exists : index -> Tezos_base__TzPervasives.Context_hash.t -> bool Lwt.t

Source

val checkout : 
  index ->
  Tezos_base__TzPervasives.Context_hash.t ->
  t option Lwt.t

Sourceval checkout_exn : index -> Tezos_base__TzPervasives.Context_hash.t -> t Lwt.t

Source

val hash : 
  time:Tezos_base.Time.Protocol.t ->
  ?message:string ->
  t ->
  Tezos_base__TzPervasives.Context_hash.t

Source

val commit : 
  time:Tezos_base.Time.Protocol.t ->
  ?message:string ->
  t ->
  Tezos_base__TzPervasives.Context_hash.t Lwt.t

Sourceval create : unit -> t

Sourceval empty : t

Sourceval encoding : t Tezos_base__TzPervasives.Data_encoding.t

Sourceval get_protocol : t -> Tezos_base__TzPervasives.Protocol_hash.t Lwt.t

Sourceval add_protocol : t -> Tezos_base__TzPervasives.Protocol_hash.t -> t Lwt.t

Sourceval get_hash_version : t -> Tezos_base__TzPervasives.Context_hash.Version.t

Get the hash version used for the context

Source

val set_hash_version : 
  t ->
  Tezos_base__TzPervasives.Context_hash.Version.t ->
  (t, Tezos_error_monad.TzCore.error list) result Lwt.t

Set the hash version used for the context. It may recalculate the hashes of the whole context, which can be a long process. Returns an Error if the hash version is unsupported.

Sourceexception Context_dangling_hash of string

Exception raised by find_tree and add_tree when applied to shallow trees. It is exposed so that it can be catched by the proxy where such operations on shallow trees are expected.

Source

val add_predecessor_block_metadata_hash : 
  t ->
  Tezos_base__TzPervasives.Block_metadata_hash.t ->
  t Lwt.t

Source

val add_predecessor_ops_metadata_hash : 
  t ->
  Tezos_base__TzPervasives.Operation_metadata_list_list_hash.t ->
  t Lwt.t

Sourceval get_test_chain : t -> Tezos_base.Test_chain_status.t Lwt.t

Sourceval add_test_chain : t -> Tezos_base.Test_chain_status.t -> t Lwt.t

Install

Dune Dependency

Authors

Maintainers

Sources

doc/tezos-context.memory/Tezos_context_memory/Context/index.html

Module `Tezos_context_memory.Context`Source

Getters

Setters

Folding

package tezos-context

Install

Dune Dependency

Authors

Maintainers

Sources

doc/tezos-context.memory/Tezos_context_memory/Context/index.html

Module Tezos_context_memory.ContextSource

Getters

Setters

Folding

Module `Tezos_context_memory.Context`Source