nimbus-eth1/nimbus/db/ledger.nim

64 lines
1.8 KiB
Nim

# Nimbus
# Copyright (c) 2018 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed
# except according to those terms.
## Unifies different ledger management APIs. All ledger objects are
## derived from the base objects
## ::
## LedgerRef => AccountsCache, overloaded AccountsCache, etc.
## LedgerSpRef => SavePoint, overloaded SavePoint etc
##
## In order to directly use `AccountsCache` it must be imported via
## `import db/ledger/accounts_cache`. In this case, there is no `LedgerRef`.
##
{.push raises: [].}
import
eth/common,
./core_db,
./ledger/backend/[
accounts_cache, accounts_cache_desc,
accounts_ledger, accounts_ledger_desc],
./ledger/base_iterators
import
./ledger/base except LedgerApiTxt, beginTrackApi, bless, ifTrackApi
export
AccountsCache,
AccountsLedgerRef,
LedgerType,
base,
base_iterators,
init
# ------------------------------------------------------------------------------
# Public constructor
# ------------------------------------------------------------------------------
proc init*(
ldgType: LedgerType;
db: CoreDbRef;
root: Hash256;
pruneTrie: bool;
): LedgerRef =
case ldgType:
of LegacyAccountsCache:
result = AccountsCache.init(db, root, pruneTrie)
of LedgerCache:
result = AccountsLedgerRef.init(db, root, pruneTrie)
else:
raiseAssert: "Missing ledger type label"
# ------------------------------------------------------------------------------
# End
# ------------------------------------------------------------------------------