mirror of
https://github.com/status-im/nimbus-eth1.git
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dbe3393f5c
* Fix eth/common & web3 related deprecation warnings for fluffy This commit uses the new types in the new eth/common/ structure to remove deprecation warnings. It is however more than just a mass replace as also all places where eth/common or eth/common/eth_types or eth/common/eth_types_rlp got imported have been revised and adjusted to a better per submodule based import. There are still a bunch of toMDigest deprecation warnings but that convertor is not needed for fluffy code anymore so in theory it should not be used (bug?). It seems to still get imported via export leaks ffrom imported nimbus code I think. * Address review comments * Remove two more unused eth/common imports
113 lines
3.0 KiB
Nim
113 lines
3.0 KiB
Nim
# Fluffy
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# Copyright (c) 2023-2024 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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# As per spec:
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# https://github.com/ethereum/portal-network-specs/blob/master/state-network.md#content-keys-and-content-ids
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{.push raises: [].}
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import results, ssz_serialization, ../../../common/common_types
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export ssz_serialization, common_types, results
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const
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MAX_PACKED_NIBBLES_LEN = 33
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MAX_UNPACKED_NIBBLES_LEN = 64
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type Nibbles* = List[byte, MAX_PACKED_NIBBLES_LEN]
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type UnpackedNibbles* = seq[byte]
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func init*(T: type Nibbles, packed: openArray[byte], isEven: bool): T =
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doAssert(packed.len() <= MAX_PACKED_NIBBLES_LEN)
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var output = newSeqOfCap[byte](packed.len() + 1)
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if isEven:
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output.add(0x00)
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else:
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doAssert(packed.len() > 0)
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# set the first nibble to 1 and copy the second nibble from the input
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output.add((packed[0] and 0x0F) or 0x10)
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let startIdx = if isEven: 0 else: 1
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for i in startIdx ..< packed.len():
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output.add(packed[i])
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Nibbles(output)
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func empty*(T: type Nibbles): T =
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Nibbles.init(@[], true)
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func encode*(nibbles: Nibbles): seq[byte] =
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SSZ.encode(nibbles)
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func decode*(T: type Nibbles, bytes: openArray[byte]): Result[T, string] =
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decodeSsz(bytes, T)
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func packNibbles*(unpacked: openArray[byte]): Nibbles =
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doAssert(
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unpacked.len() <= MAX_UNPACKED_NIBBLES_LEN, "Can't pack more than 64 nibbles"
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)
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if unpacked.len() == 0:
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return Nibbles(@[byte(0x00)])
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let isEvenLength = unpacked.len() mod 2 == 0
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var
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output = newSeqOfCap[byte](unpacked.len() div 2 + 1)
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highNibble = isEvenLength
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currentByte: byte = 0
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if isEvenLength:
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output.add(0x00)
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else:
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currentByte = 0x10
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for i, nibble in unpacked:
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if highNibble:
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currentByte = nibble shl 4
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else:
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output.add(currentByte or nibble)
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currentByte = 0
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highNibble = not highNibble
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Nibbles(output)
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func unpackNibbles*(packed: Nibbles): UnpackedNibbles =
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doAssert(packed.len() <= MAX_PACKED_NIBBLES_LEN, "Packed nibbles length is too long")
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var output = newSeqOfCap[byte](packed.len() * 2)
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for i, pair in packed:
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if i == 0 and pair == 0x00:
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continue
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let
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first = (pair and 0xF0) shr 4
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second = pair and 0x0F
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if i == 0 and first == 0x01:
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output.add(second)
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else:
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output.add(first)
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output.add(second)
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ensureMove(output)
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func len(packed: Nibbles): int =
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let lenExclPrefix = (packed.len() - 1) * 2
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if packed[0] == 0x00: # is even length
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lenExclPrefix
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else:
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lenExclPrefix + 1
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func dropN*(unpacked: UnpackedNibbles, num: int): UnpackedNibbles =
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var nibbles = unpacked
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nibbles.setLen(nibbles.len() - num)
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ensureMove(nibbles)
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