# nimbus-eth1
# Copyright (c) 2023 Status Research & Development GmbH
# Licensed under either of
#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
#    http://www.apache.org/licenses/LICENSE-2.0)
#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or
#    http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed
# except according to those terms.

## Kvt DB -- structural data types
## ===============================
##
{.push raises: [].}

import
  std/tables,
  eth/common

type
  LayerDelta* = object
    ## Delta tables relative to previous layer
    sTab*: Table[Blob,Blob]           ## Structural data table

  LayerRef* = ref object
    ## Kvt database layer structures. Any layer holds the full
    ## change relative to the backend.
    delta*: LayerDelta                ## Structural tables held as deltas
    txUid*: uint                      ## Transaction identifier if positive

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# End
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