git-annex/Types/ActionItem.hs
2019-06-06 12:53:24 -04:00

61 lines
2 KiB
Haskell

{- items that a command can act on
-
- Copyright 2016-2019 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE TypeSynonymInstances, FlexibleInstances #-}
module Types.ActionItem where
import Key
import Types.Transfer
import Git.FilePath
data ActionItem
= ActionItemAssociatedFile AssociatedFile Key
| ActionItemKey Key
| ActionItemBranchFilePath BranchFilePath Key
| ActionItemFailedTransfer Transfer TransferInfo
class MkActionItem t where
mkActionItem :: t -> ActionItem
instance MkActionItem (AssociatedFile, Key) where
mkActionItem = uncurry ActionItemAssociatedFile
instance MkActionItem (Key, AssociatedFile) where
mkActionItem = uncurry $ flip ActionItemAssociatedFile
instance MkActionItem Key where
mkActionItem = ActionItemKey
instance MkActionItem (BranchFilePath, Key) where
mkActionItem = uncurry ActionItemBranchFilePath
instance MkActionItem (Transfer, TransferInfo) where
mkActionItem = uncurry ActionItemFailedTransfer
actionItemDesc :: ActionItem -> String
actionItemDesc (ActionItemAssociatedFile (AssociatedFile (Just f)) _) = f
actionItemDesc (ActionItemAssociatedFile (AssociatedFile Nothing) k) = serializeKey k
actionItemDesc (ActionItemKey k) = serializeKey k
actionItemDesc (ActionItemBranchFilePath bfp _) = descBranchFilePath bfp
actionItemDesc (ActionItemFailedTransfer t i) = actionItemDesc $
ActionItemAssociatedFile (associatedFile i) (transferKey t)
actionItemKey :: ActionItem -> Key
actionItemKey (ActionItemAssociatedFile _ k) = k
actionItemKey (ActionItemKey k) = k
actionItemKey (ActionItemBranchFilePath _ k) = k
actionItemKey (ActionItemFailedTransfer t _) = transferKey t
actionItemWorkTreeFile :: ActionItem -> Maybe FilePath
actionItemWorkTreeFile (ActionItemAssociatedFile (AssociatedFile af) _) = af
actionItemWorkTreeFile _ = Nothing
actionItemTransferDirection :: ActionItem -> Maybe Direction
actionItemTransferDirection (ActionItemFailedTransfer t _) = Just $
transferDirection t
actionItemTransferDirection _ = Nothing