diff options
Diffstat (limited to 'Types/Key.hs')
| -rw-r--r-- | Types/Key.hs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Types/Key.hs b/Types/Key.hs index 90f66f23e..154e813ff 100644 --- a/Types/Key.hs +++ b/Types/Key.hs @@ -13,6 +13,8 @@ module Types.Key ( stubKey, key2file, file2key, + nonChunkKey, + chunkKeyOffset, prop_idempotent_key_encode, prop_idempotent_key_decode @@ -47,6 +49,19 @@ stubKey = Key , keyChunkNum = Nothing } +-- Gets the parent of a chunk key. +nonChunkKey :: Key -> Key +nonChunkKey k = k + { keyChunkSize = Nothing + , keyChunkNum = Nothing + } + +-- Where a chunk key is offset within its parent. +chunkKeyOffset :: Key -> Maybe Integer +chunkKeyOffset k = (*) + <$> keyChunkSize k + <*> (pred <$> keyChunkNum k) + fieldSep :: Char fieldSep = '-' |