git-annex/CmdLine/GlobalSetter.hs
Joey Hess d16d739ce2
implement fastDebug
Most of the changes here involve global option parsing: GlobalSetter
changed so it can both run an Annex action to set state, but can also
change the AnnexRead value, which is immutable once the Annex monad is
running.

That allowed a debugselector value to be added to AnnexRead, seeded
from the git config. The --debugfilter option's GlobalSetter then updates
the AnnexRead.

This improved GlobalSetter can later be used to move more stuff to
AnnexRead. Things that don't involve a git config will be easier to
move, and probably a *lot* of things can be moved eventually.

fastDebug, while implemented, is not used anywhere yet. But it should be
fast..
2021-04-06 15:24:28 -04:00

36 lines
1.1 KiB
Haskell

{- git-annex global options
-
- Copyright 2015-2021 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module CmdLine.GlobalSetter where
import Common
import Annex
import Types.DeferredParse
import Options.Applicative
setAnnexState :: Annex () -> GlobalSetter
setAnnexState a = GlobalSetter a id
setAnnexRead :: (AnnexRead -> AnnexRead) -> GlobalSetter
setAnnexRead f = GlobalSetter (return ()) f
globalFlag :: GlobalSetter -> Mod FlagFields GlobalSetter -> GlobalOption
globalFlag = flag'
globalOption :: (v -> GlobalSetter) -> Parser v -> GlobalOption
globalOption mk parser = mk <$> parser
-- | Combines a bunch of GlobalOptions together into a Parser
-- that returns a GlobalSetter that can be used to set all the options that
-- are enabled.
parserGlobalOptions :: [GlobalOption] -> Parser GlobalSetter
parserGlobalOptions [] = pure mempty
parserGlobalOptions l = mconcat <$> many (foldl1 (<|>) l)
applyAnnexReadSetter :: GlobalSetter -> (AnnexState, AnnexRead) -> (AnnexState, AnnexRead)
applyAnnexReadSetter gs (st, rd) = (st, annexReadSetter gs rd)