diff options
| author | Aspen Smith <grfn@gws.fyi> | 2024-02-12T03·00-0500 |
|---|---|---|
| committer | clbot <clbot@tvl.fyi> | 2024-02-14T19·37+0000 |
| commit | 82ecd61f5c699cf3af6c4eadf47a1c52b1d696c6 (patch) | |
| tree | 429c5e078528000591742ec3211bc768ae913a78 /users/aspen/xanthous/src/Xanthous/Util/Optparse.hs | |
| parent | 0ba476a4266015f278f18d74094299de74a5a111 (diff) | |
chore(users): grfn -> aspen r/7511
Change-Id: I6c6847fac56f0a9a1a2209792e00a3aec5e672b9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10809 Autosubmit: aspen <root@gws.fyi> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: lukegb <lukegb@tvl.fyi>
Diffstat (limited to 'users/aspen/xanthous/src/Xanthous/Util/Optparse.hs')
| -rw-r--r-- | users/aspen/xanthous/src/Xanthous/Util/Optparse.hs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/users/aspen/xanthous/src/Xanthous/Util/Optparse.hs b/users/aspen/xanthous/src/Xanthous/Util/Optparse.hs new file mode 100644 index 0000000000..dfa6537235 --- /dev/null +++ b/users/aspen/xanthous/src/Xanthous/Util/Optparse.hs @@ -0,0 +1,21 @@ +-------------------------------------------------------------------------------- +module Xanthous.Util.Optparse + ( readWithGuard + ) where +-------------------------------------------------------------------------------- +import Xanthous.Prelude +-------------------------------------------------------------------------------- +import qualified Options.Applicative as Opt +-------------------------------------------------------------------------------- + +readWithGuard + :: Read b + => (b -> Bool) + -> (b -> String) + -> Opt.ReadM b +readWithGuard predicate errmsg = do + res <- Opt.auto + unless (predicate res) + $ Opt.readerError + $ errmsg res + pure res |