41 lines
1.3 KiB
Nim
41 lines
1.3 KiB
Nim
# nimbus-eth1
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# Copyright (c) 2021 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed
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# except according to those terms.
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## Kvt DB -- structural data types
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## ===============================
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##
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{.push raises: [].}
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import
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std/tables,
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eth/common
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type
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LayerRef* = ref object
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## Kvt database layer structures. Any layer holds the full
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## change relative to the backend.
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tab*: Table[Blob,Blob] ## Structural table
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txUid*: uint ## Transaction identifier if positive
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# ------------------------------------------------------------------------------
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# Public helpers, miscellaneous functions
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# ------------------------------------------------------------------------------
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proc dup*(layer: LayerRef): LayerRef =
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## Duplicate layer.
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result = LayerRef(
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txUid: layer.txUid)
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for (k,v) in layer.tab.pairs:
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result.tab[k] = v
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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