nimbus-eth1/nimbus/db/access_list.nim

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2020-12-09 05:24:37 +00:00
import
tables, sets,
stint,
eth/common
type
SlotSet = HashSet[UInt256]
AccessList* = object
slots: Table[EthAddress, SlotSet]
proc init*(ac: var AccessList) =
ac.slots = initTable[EthAddress, SlotSet]()
proc init*(_: type AccessList): AccessList {.inline.} =
result.init()
func contains*(ac: AccessList, address: EthAddress): bool {.inline.} =
address in ac.slots
# returnValue: (addressPresent, slotPresent)
func contains*(ac: var AccessList, address: EthAddress, slot: UInt256): bool =
ac.slots.withValue(address, val):
result = slot in val[]
proc merge*(ac: var AccessList, other: AccessList) {.inline.} =
for k, v in other.slots:
ac.slots.withValue(k, val):
val[].incl v
do:
ac.slots[k] = v
proc add*(ac: var AccessList, address: EthAddress) =
if address notin ac.slots:
ac.slots[address] = initHashSet[UInt256]()
proc add*(ac: var AccessList, address: EthAddress, slot: UInt256) =
ac.slots.withValue(address, val):
val[].incl slot
do:
ac.slots[address] = toHashSet([slot])