diff options
Diffstat (limited to 'src/Hakyll/Core/Identifier.hs')
| -rw-r--r-- | src/Hakyll/Core/Identifier.hs | 50 |
1 files changed, 37 insertions, 13 deletions
diff --git a/src/Hakyll/Core/Identifier.hs b/src/Hakyll/Core/Identifier.hs index 4ea9c8e..2cf8a53 100644 --- a/src/Hakyll/Core/Identifier.hs +++ b/src/Hakyll/Core/Identifier.hs @@ -36,30 +36,36 @@ module Hakyll.Core.Identifier , fromFilePath , toFilePath , castIdentifier + , identifierVersion + , setVersion ) where -------------------------------------------------------------------------------- -import Control.DeepSeq (NFData) -import Data.List (intercalate) -import System.FilePath (dropTrailingPathSeparator, splitPath) +import Control.Applicative ((<$>), (<*>)) +import Control.DeepSeq (NFData (..)) +import Data.List (intercalate) +import System.FilePath (dropTrailingPathSeparator, splitPath) -------------------------------------------------------------------------------- -import Data.Binary (Binary) -import Data.Typeable (Typeable) -import GHC.Exts (IsString, fromString) +import Data.Binary (Binary (..)) +import Data.Typeable (Typeable) +import GHC.Exts (IsString, fromString) -------------------------------------------------------------------------------- -- | An identifier used to uniquely identify a value -newtype Identifier a = Identifier {unIdentifier :: String} - deriving (Binary, Eq, NFData, Ord, Typeable) +data Identifier a = Identifier + { identifierVersion :: Maybe String + , identifierPath :: String + } deriving (Eq, Ord, Typeable) -------------------------------------------------------------------------------- -instance Show (Identifier a) where - show = toFilePath +instance Binary (Identifier a) where + put (Identifier v p) = put v >> put p + get = Identifier <$> get <*> get -------------------------------------------------------------------------------- @@ -68,9 +74,22 @@ instance IsString (Identifier a) where -------------------------------------------------------------------------------- +instance NFData (Identifier a) where + rnf (Identifier v p) = rnf v `seq` rnf p `seq` () + + +-------------------------------------------------------------------------------- +instance Show (Identifier a) where + show i = case identifierVersion i of + Nothing -> toFilePath i + Just v -> toFilePath i ++ " (" ++ v ++ ")" + + +-------------------------------------------------------------------------------- -- | Parse an identifier from a string fromFilePath :: String -> Identifier a -fromFilePath = Identifier . intercalate "/" . filter (not . null) . split' +fromFilePath = Identifier Nothing . + intercalate "/" . filter (not . null) . split' where split' = map dropTrailingPathSeparator . splitPath @@ -78,11 +97,16 @@ fromFilePath = Identifier . intercalate "/" . filter (not . null) . split' -------------------------------------------------------------------------------- -- | Convert an identifier to a relative 'FilePath' toFilePath :: Identifier a -> FilePath -toFilePath = unIdentifier +toFilePath = identifierPath -------------------------------------------------------------------------------- -- | Discard the phantom type parameter of an identifier castIdentifier :: Identifier a -> Identifier b -castIdentifier (Identifier x) = Identifier x +castIdentifier (Identifier v p) = Identifier v p {-# INLINE castIdentifier #-} + + +-------------------------------------------------------------------------------- +setVersion :: Maybe String -> Identifier a -> Identifier a +setVersion v i = i {identifierVersion = v} |