Rename everything under the Network.DNS.RBL hierarchy.

[dead/harbl.git] / src / Pretty.hs

diff --git a/src/Pretty.hs b/src/Pretty.hs
deleted file mode 100644 (file)
index 1491124..0000000
--- a/src/Pretty.hs
+++ /dev/null
@@ -1,48 +0,0 @@
-{-# LANGUAGE FlexibleInstances #-}
-
--- | A typeclass for pretty-printing. Types that wish to be
---   pretty-printed should make themselves an instance of the 'Pretty'
---   class. The only class function that they need to implement is
---   'pretty_show', which turns the thing into a string in a nice
---   way. The 'pretty_print' function then prints the result of
---   'pretty_show' by default.
---
-module Pretty ( Pretty(..) )
-where
-
-import Text.Parsec ( ParseError )
-
-
-class Pretty a where
-  -- | Obtain a pretty 'String' representation of the given thingy.
-  pretty_show :: a -> String
-
-  -- | Pretty-print the given thingy.
-  pretty_print :: a -> IO ()
-  pretty_print = putStrLn . pretty_show
-
-
--- | If we can pretty print something, we can pretty-print a list of
---   them too.
---
-instance (Pretty a) => Pretty [a] where
-  pretty_show l = show $ map pretty_show l
-
-
--- | If we can pretty print something, we can pretty-print a pair of
---   them too.
---
-instance (Pretty a, Pretty b) => Pretty (a,b) where
-  pretty_show (x,y) = show (pretty_show x, pretty_show y)
-
-
-
--- | Define a 'Pretty' instance for the result of 'parse'. This lets
---   us pretty-print the result of a parse attempt without worrying
---   about whether or not it failed. If the parse failed, you get the
---   same output that you usually would. Otherwise we pretty-print the
---   parsed value.
---
-instance Pretty a => Pretty (Either ParseError a) where
-  pretty_show (Left err) = show err
-  pretty_show (Right v)  = pretty_show v