nimbus-eth1/nimbus/db/distinct_tries.nim

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2.4 KiB
Nim

# The point of this file is just to give a little more type-safety
# and clarity to our use of SecureHexaryTrie, by having distinct
# types for the big trie containing all the accounts and the little
# tries containing the storage for an individual account.
#
# It's nice to have all the accesses go through "getAccountBytes"
# rather than just "get" (which is hard to search for). Plus we
# may want to put in assertions to make sure that the nodes for
# the account are all present (in stateless mode), etc.
import
std/typetraits,
eth/common,
eth/trie/[db, hexary]
type
DB = TrieDatabaseRef
AccountsTrie* = distinct SecureHexaryTrie
StorageTrie* = distinct SecureHexaryTrie
# I don't understand why "borrow" doesn't work here. --Adam
proc rootHash* (trie: AccountsTrie | StorageTrie): KeccakHash = distinctBase(trie).rootHash
proc rootHashHex*(trie: AccountsTrie | StorageTrie): string = distinctBase(trie).rootHashHex
proc db* (trie: AccountsTrie | StorageTrie): TrieDatabaseRef = distinctBase(trie).db
proc isPruning* (trie: AccountsTrie | StorageTrie): bool = distinctBase(trie).isPruning
template initAccountsTrie*(db: DB, rootHash: KeccakHash, isPruning = true): AccountsTrie =
AccountsTrie(initSecureHexaryTrie(db, rootHash, isPruning))
template initAccountsTrie*(db: DB, isPruning = true): AccountsTrie =
AccountsTrie(initSecureHexaryTrie(db, isPruning))
proc getAccountBytes*(trie: AccountsTrie, address: EthAddress): seq[byte] =
SecureHexaryTrie(trie).get(address)
proc putAccountBytes*(trie: var AccountsTrie, address: EthAddress, value: openArray[byte]) =
SecureHexaryTrie(trie).put(address, value)
proc delAccountBytes*(trie: var AccountsTrie, address: EthAddress) =
SecureHexaryTrie(trie).del(address)
template initStorageTrie*(db: DB, rootHash: KeccakHash, isPruning = true): StorageTrie =
StorageTrie(initSecureHexaryTrie(db, rootHash, isPruning))
template initStorageTrie*(db: DB, isPruning = true): StorageTrie =
StorageTrie(initSecureHexaryTrie(db, isPruning))
proc getSlotBytes*(trie: StorageTrie, slotAsKey: openArray[byte]): seq[byte] =
SecureHexaryTrie(trie).get(slotAsKey)
proc putSlotBytes*(trie: var StorageTrie, slotAsKey: openArray[byte], value: openArray[byte]) =
SecureHexaryTrie(trie).put(slotAsKey, value)
proc delSlotBytes*(trie: var StorageTrie, slotAsKey: openArray[byte]) =
SecureHexaryTrie(trie).del(slotAsKey)