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https://github.com/status-im/nim-eth.git
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6bd6bae86c
Since these types were written, we've gained an executable spec: https://github.com/ethereum/execution-specs This PR aligns some of the types we use with this spec to simplify comparisons and cross-referencing. Using a `distinct` type is a tradeoff between nim ergonomics, type safety and the ability to work around nim quirks and stdlib weaknesses. In particular, it allows us to overload common functions such as `hash` with correct and performant versions as well as maintain control over string conversions etc at the cost of a little bit of ceremony when instantiating them. Apart from distinct byte types, `Hash32`, is introduced in lieu of the existing `Hash256`, again aligning this commonly used type with the spec which picks bytes rather than bits in the name.
51 lines
1.3 KiB
Nim
51 lines
1.3 KiB
Nim
# Nimbus
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# Copyright (c) 2023 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
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# https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at
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# https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed
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# except according to those terms.
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from std/times import getTime, toUnix
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type
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EthTime* = distinct uint64
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proc now*(_: type EthTime): EthTime =
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getTime().toUnix.EthTime
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func `+`*(a: EthTime, b: EthTime): EthTime =
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EthTime(a.uint64 + b.uint64)
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func `+`*(a: EthTime, b: uint64): EthTime =
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EthTime(a.uint64 + b)
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func `-`*(a: EthTime, b: EthTime): EthTime =
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EthTime(a.uint64 - b.uint64)
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func `-`*(a: EthTime, b: uint64): EthTime =
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EthTime(a.uint64 - b)
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func `==`*(a: EthTime, b: EthTime): bool =
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a.uint64 == b.uint64
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func `==`*(a: EthTime, b: uint64): bool =
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a.uint64 == b
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func `<`*(a: EthTime, b: EthTime): bool =
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a.uint64 < b.uint64
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func `<`*(a: EthTime, b: uint64): bool =
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a.uint64 < b
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func `<`*(a: uint64, b: EthTime): bool =
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a < b.uint64
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func `<=`*(a: EthTime, b: EthTime): bool =
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a.uint64 <= b.uint64
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func `$`*(x: EthTime): string =
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$(x.uint64)
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