summaryrefslogtreecommitdiff
path: root/src-2.9/GF/Data/Compos.hs
diff options
context:
space:
mode:
authoraarne <aarne@cs.chalmers.se>2008-05-21 09:26:44 +0000
committeraarne <aarne@cs.chalmers.se>2008-05-21 09:26:44 +0000
commit055c0d0d5a5bb0dc75904fe53df7f2e4f5732a8f (patch)
tree0e63fb68c69c8f6ad0f78893c63420f0a3600e1c /src-2.9/GF/Data/Compos.hs
parent915a1de71783ab8446b1af9e72c7ba7dfbc12d3f (diff)
GF/src is now for 2.9, and the new sources are in src-3.0 - keep it this way until the release of GF 3
Diffstat (limited to 'src-2.9/GF/Data/Compos.hs')
-rw-r--r--src-2.9/GF/Data/Compos.hs37
1 files changed, 0 insertions, 37 deletions
diff --git a/src-2.9/GF/Data/Compos.hs b/src-2.9/GF/Data/Compos.hs
deleted file mode 100644
index 7d46fc5a2..000000000
--- a/src-2.9/GF/Data/Compos.hs
+++ /dev/null
@@ -1,37 +0,0 @@
-{-# OPTIONS_GHC -fglasgow-exts #-}
-module GF.Data.Compos (Compos(..),composOp,composM,composM_,composFold) where
-
-import Control.Applicative (Applicative(..), Const(..), WrappedMonad(..))
-import Data.Monoid (Monoid(..))
-
-class Compos t where
- compos :: Applicative f => (forall a. t a -> f (t a)) -> t c -> f (t c)
-
-composOp :: Compos t => (forall a. t a -> t a) -> t c -> t c
-composOp f = runIdentity . compos (Identity . f)
-
-composFold :: (Monoid o, Compos t) => (forall a. t a -> o) -> t c -> o
-composFold f = getConst . compos (Const . f)
-
-composM :: (Compos t, Monad m) => (forall a. t a -> m (t a)) -> t c -> m (t c)
-composM f = unwrapMonad . compos (WrapMonad . f)
-
-composM_ :: (Compos t, Monad m) => (forall a. t a -> m ()) -> t c -> m ()
-composM_ f = unwrapMonad_ . composFold (WrapMonad_ . f)
-
-
-newtype Identity a = Identity { runIdentity :: a }
-
-instance Functor Identity where
- fmap f (Identity x) = Identity (f x)
-
-instance Applicative Identity where
- pure = Identity
- Identity f <*> Identity x = Identity (f x)
-
-
-newtype WrappedMonad_ m = WrapMonad_ { unwrapMonad_ :: m () }
-
-instance Monad m => Monoid (WrappedMonad_ m) where
- mempty = WrapMonad_ (return ())
- WrapMonad_ x `mappend` WrapMonad_ y = WrapMonad_ (x >> y)