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nim-eth/eth/common/times.nim

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Change EthTime from Time to distinct uint64 Cancun test vector demand a uint64 of block timestamp. Therefore using std.Time will not able to pass test.
2023-09-26 15:56:47 +00:00
# Nimbus
# Copyright (c) 2023 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at
# https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at
# https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed
# except according to those terms.
Align core types with execution spec (#733) 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.
2024-09-29 08:52:19 +00:00
from std/times import getTime, toUnix
Change EthTime from Time to distinct uint64 Cancun test vector demand a uint64 of block timestamp. Therefore using std.Time will not able to pass test.
2023-09-26 15:56:47 +00:00
type
EthTime* = distinct uint64
Fix EthTime.now from func to proc due to sideeffects
2023-10-17 10:20:34 +00:00
proc now*(_: type EthTime): EthTime =
Align core types with execution spec (#733) 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.
2024-09-29 08:52:19 +00:00
getTime().toUnix.EthTime
Change EthTime from Time to distinct uint64 Cancun test vector demand a uint64 of block timestamp. Therefore using std.Time will not able to pass test.
2023-09-26 15:56:47 +00:00
func `+`*(a: EthTime, b: EthTime): EthTime =
EthTime(a.uint64 + b.uint64)
func `+`*(a: EthTime, b: uint64): EthTime =
EthTime(a.uint64 + b)
func `-`*(a: EthTime, b: EthTime): EthTime =
EthTime(a.uint64 - b.uint64)
func `-`*(a: EthTime, b: uint64): EthTime =
EthTime(a.uint64 - b)
func `==`*(a: EthTime, b: EthTime): bool =
a.uint64 == b.uint64
func `==`*(a: EthTime, b: uint64): bool =
a.uint64 == b
func `<`*(a: EthTime, b: EthTime): bool =
a.uint64 < b.uint64
func `<`*(a: EthTime, b: uint64): bool =
a.uint64 < b
func `<`*(a: uint64, b: EthTime): bool =
a < b.uint64
func `<=`*(a: EthTime, b: EthTime): bool =
a.uint64 <= b.uint64
func `$`*(x: EthTime): string =
$(x.uint64)