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45 lines
1.0 KiB
Nim
45 lines
1.0 KiB
Nim
import libp2p
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import pkg/stint
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import pkg/questionable
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import pkg/questionable/results
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import pkg/upraises
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import ./blockexc
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import ../../blocktype
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export questionable
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export stint
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export BlockPresenceType
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upraises.push:
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{.upraises: [].}
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type
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PresenceMessage* = blockexc.BlockPresence
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Presence* = object
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address*: BlockAddress
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have*: bool
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price*: UInt256
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func parse(_: type UInt256, bytes: seq[byte]): ?UInt256 =
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if bytes.len > 32:
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return UInt256.none
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UInt256.fromBytesBE(bytes).some
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func init*(_: type Presence, message: PresenceMessage): ?Presence =
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without price =? UInt256.parse(message.price):
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return none Presence
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some Presence(
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address: message.address,
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have: message.`type` == BlockPresenceType.Have,
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price: price,
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)
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func init*(_: type PresenceMessage, presence: Presence): PresenceMessage =
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PresenceMessage(
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address: presence.address,
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`type`: if presence.have: BlockPresenceType.Have else: BlockPresenceType.DontHave,
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price: @(presence.price.toBytesBE),
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)
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