I have a file that looks like this:
import std/[lexbase, streams]
type
UpdateParserState = enum
startState, statePlainText, statePotentialExpansion
UpdateParser = object of BaseLexer
curtext: string
state: UpdateParserState
func open(my: var UpdateParser, input: Stream) =
## Opens update parser
lexbase.open(my, input)
my.curtext = ""
my.state = startState
Run
Attempting to compile just this results in the following error:
expandupdate.nim(10, 6) Error: 'open' can have side effects
> expandupdate.nim(12, 17) Hint: 'open' calls `.sideEffect` 'open'
>> .../nim/lib/pure/lexbase.nim(137, 6) Hint: 'open' called by 'open'
Run
What am I doing wrong compared to the parsers in the standard library?
