49 lines
1.2 KiB
Nim
49 lines
1.2 KiB
Nim
import eth/common, stint, evmc/evmc, ../utils
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const
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evmc_native* {.booldefine.} = false
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func toEvmc*(a: EthAddress): evmc_address {.inline.} =
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cast[evmc_address](a)
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func toEvmc*(h: Hash256 | ContractSalt): evmc_bytes32 {.inline.} =
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doAssert sizeof(h) == sizeof(evmc_bytes32)
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cast[evmc_bytes32](h)
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func toEvmc*(n: Uint256): evmc_uint256be {.inline.} =
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when evmc_native:
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cast[evmc_uint256be](n)
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else:
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cast[evmc_uint256be](n.toByteArrayBE)
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func fromEvmc*(T: type, n: evmc_bytes32): T {.inline.} =
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when T is Hash256 | ContractSalt:
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doAssert sizeof(n) == sizeof(T)
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cast[T](n)
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elif T is Uint256:
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when evmc_native:
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cast[Uint256](n)
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else:
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Uint256.fromBytesBE(n.bytes)
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else:
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{.error: "cannot convert unsupported evmc type".}
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func fromEvmc*(a: evmc_address): EthAddress {.inline.} =
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cast[EthAddress](a)
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when isMainModule:
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import ../constants
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var a: evmc_address
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a.bytes[19] = 3.byte
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var na = fromEvmc(a)
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assert(a == toEvmc(na))
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var b = stuint(10, 256)
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var eb = b.toEvmc
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assert(b == fromEvmc(Uint256, eb))
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var h = EMPTY_SHA3
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var eh = toEvmc(h)
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assert(h == fromEvmc(Hash256, eh))
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var s = cast[ContractSalt](BLANK_ROOT_HASH)
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var es = toEvmc(s)
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assert(s == fromEvmc(ContractSalt, es))
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