80 lines
2.7 KiB
Nim
80 lines
2.7 KiB
Nim
# Nimbus
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# Copyright (c) 2018 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 except
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# according to those terms.
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import
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../../chain_config,
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../../db/db_chain,
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./chain_desc,
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chronicles,
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eth/common,
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stew/endians2,
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stint
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{.push raises: [Defect].}
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# ------------------------------------------------------------------------------
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# Helpers
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# ------------------------------------------------------------------------------
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func toChainFork(c: ChainConfig, number: BlockNumber): ChainFork =
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if number >= c.londonBlock: London
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elif number >= c.berlinBlock: Berlin
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elif number >= c.muirGlacierBlock: MuirGlacier
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elif number >= c.istanbulBlock: Istanbul
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elif number >= c.petersburgBlock: Petersburg
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elif number >= c.constantinopleBlock: Constantinople
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elif number >= c.byzantiumBlock: Byzantium
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elif number >= c.eip158Block: Spurious
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elif number >= c.eip150Block: Tangerine
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elif number >= c.daoForkBlock: DAOFork
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elif number >= c.homesteadBlock: Homestead
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else: Frontier
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# ------------------------------------------------------------------------------
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# Public `AbstractChainDB` overload methods
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# ------------------------------------------------------------------------------
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method getBlockHeader*(c: Chain, b: HashOrNum, output: var BlockHeader): bool
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{.gcsafe, raises: [Defect,RlpError].} =
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case b.isHash
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of true:
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c.db.getBlockHeader(b.hash, output)
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else:
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c.db.getBlockHeader(b.number, output)
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method getSuccessorHeader*(c: Chain, h: BlockHeader, output: var BlockHeader,
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skip = 0'u): bool {.gcsafe, raises: [Defect,RlpError].} =
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let offset = 1 + skip.toBlockNumber
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if h.blockNumber <= (not 0.toBlockNumber) - offset:
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result = c.db.getBlockHeader(h.blockNumber + offset, output)
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method getAncestorHeader*(c: Chain, h: BlockHeader, output: var BlockHeader,
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skip = 0'u): bool {.gcsafe, raises: [Defect,RlpError].} =
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let offset = 1 + skip.toBlockNumber
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if h.blockNumber >= offset:
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result = c.db.getBlockHeader(h.blockNumber - offset, output)
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method getBlockBody*(c: Chain, blockHash: KeccakHash): BlockBodyRef =
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## Always `nil`
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result = nil
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method getForkId*(c: Chain, n: BlockNumber): ForkID {.gcsafe.} =
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## EIP 2364/2124
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let fork = c.db.config.toChainFork(n)
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c.forkIds[fork]
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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