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https://github.com/status-im/nim-eth.git
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2c236f6495
Currently only setting `--styleCheck:hint` as there are some dependency fixes required and the compiler seems to trip over the findnode MessageKind, findnode Message field and the findNode proc. Also over protocol.Protocol usage.
53 lines
2.2 KiB
Nim
53 lines
2.2 KiB
Nim
# nim-eth
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# Copyright (c) 2018-2021 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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../common/[eth_types, state_accessors]
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# TODO: Perhaps we can move this to eth-common
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proc getBlockHeaders*(db: AbstractChainDB, req: BlocksRequest): seq[BlockHeader]
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{.gcsafe, raises: [RlpError, Defect].} =
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result = newSeqOfCap[BlockHeader](req.maxResults)
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var foundBlock: BlockHeader
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if db.getBlockHeader(req.startBlock, foundBlock):
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result.add foundBlock
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while uint64(result.len) < req.maxResults:
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if not req.reverse:
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if not db.getSuccessorHeader(foundBlock, foundBlock, req.skip):
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break
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else:
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if not db.getAncestorHeader(foundBlock, foundBlock, req.skip):
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break
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result.add foundBlock
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template fetcher*(fetcherName, fetchingFunc, InputType, ResultType: untyped) =
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proc fetcherName*(db: AbstractChainDB,
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lookups: openArray[InputType]): seq[ResultType] {.gcsafe.} =
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for lookup in lookups:
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let fetched = fetchingFunc(db, lookup)
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if fetched.hasData:
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# TODO: should there be an else clause here.
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# Is the peer responsible of figuring out that
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# some of the requested items were not found?
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result.add deref(fetched)
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fetcher getContractCodes, getContractCode, ContractCodeRequest, Blob
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fetcher getBlockBodies, getBlockBody, KeccakHash, BlockBody
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fetcher getStorageNodes, getStorageNode, KeccakHash, Blob
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fetcher getReceipts, getReceipt, KeccakHash, Receipt
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fetcher getProofs, getProof, ProofRequest, Blob
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fetcher getHeaderProofs, getHeaderProof, ProofRequest, Blob
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proc getHelperTrieProofs*(db: AbstractChainDB,
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reqs: openArray[HelperTrieProofRequest],
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outNodes: var seq[Blob], outAuxData: var seq[Blob]) =
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discard
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