@Krux02 Thanks for the hint! I've already gone with the solution advised by
@Araq though:
import macros
type
ValidationError* = object of Exception
template validateLength(limit: Natural) {.dirty.} =
if len(value) > limit:
raise newException(ValidationError, "The value is too long.")
macro maxLength*(limit: Natural, setterProc: untyped): untyped =
setterProc.body.insert(0, getAst(validateLength(limit)))
result = setterProc
I think it's more readable than using `setterProc.params[2][0]`, because these
indices don't really tell anything to the code reader. So it may be a good
thing I couldn't make it work the `quote` way :)
Still, I wonder if using dirty templates in conjunction with `getAst` is the
easiest way to emulate decorator behavior. I have a sense there must be a
better way (not that this way is bad).
