90 lines
2.9 KiB
Nim
90 lines
2.9 KiB
Nim
# nimbus-eth1
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# Copyright (c) 2023-2024 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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## Aristo DB -- Handy Helpers
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## ==========================
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##
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{.push raises: [].}
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import
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eth/common,
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results,
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"."/[aristo_desc, aristo_compute]
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# ------------------------------------------------------------------------------
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# Public functions, converters
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# ------------------------------------------------------------------------------
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proc toNode*(
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vtx: VertexRef; # Vertex to convert
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root: VertexID; # Sub-tree root the `vtx` belongs to
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db: AristoDbRef; # Database
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): Result[NodeRef,seq[VertexID]] =
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## Convert argument the vertex `vtx` to a node type. Missing Merkle hash
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## keys are searched for on the argument database `db`.
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##
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## On error, at least the vertex ID of the first missing Merkle hash key is
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## returned. If the argument `stopEarly` is set `false`, all missing Merkle
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## hash keys are returned.
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##
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## In the argument `beKeyOk` is set `false`, keys for node links are accepted
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## only from the cache layer. This does not affect a link key for a payload
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## storage root.
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##
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case vtx.vType:
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of Leaf:
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let node = NodeRef(vtx: vtx.dup())
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# Need to resolve storage root for account leaf
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if vtx.lData.pType == AccountData:
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let stoID = vtx.lData.stoID
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if stoID.isValid:
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let key = db.computeKey((stoID.vid, stoID.vid)).valueOr:
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return err(@[stoID.vid])
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node.key[0] = key
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return ok node
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of Branch:
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let node = NodeRef(vtx: vtx.dup())
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for n, subvid in vtx.pairs():
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let key = db.computeKey((root, subvid)).valueOr:
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return err(@[subvid])
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node.key[n] = key
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return ok node
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iterator subVids*(vtx: VertexRef): VertexID =
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## Returns the list of all sub-vertex IDs for the argument `vtx`.
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case vtx.vType:
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of Leaf:
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if vtx.lData.pType == AccountData:
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let stoID = vtx.lData.stoID
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if stoID.isValid:
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yield stoID.vid
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of Branch:
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for _, subvid in vtx.pairs():
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yield subvid
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iterator subVidKeys*(node: NodeRef): (VertexID,HashKey) =
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## Simolar to `subVids()` but for nodes
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case node.vtx.vType:
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of Leaf:
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if node.vtx.lData.pType == AccountData:
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let stoID = node.vtx.lData.stoID
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if stoID.isValid:
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yield (stoID.vid, node.key[0])
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of Branch:
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for n, subvid in node.vtx.pairs():
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yield (subvid,node.key[n])
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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