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| author | krasimir <krasimir@chalmers.se> | 2009-12-13 18:50:29 +0000 |
|---|---|---|
| committer | krasimir <krasimir@chalmers.se> | 2009-12-13 18:50:29 +0000 |
| commit | f85232947e74ee7ef8c7b0ad2338212e7e68f1be (patch) | |
| tree | 667b886a5e3a4b026a63d4e3597f32497d824761 /src/GF/Data/ErrM.hs | |
| parent | d88a865faff59c98fc91556ff8700b10ee5f2df8 (diff) | |
reorganize the directories under src, and rescue the JavaScript interpreter from deprecated
Diffstat (limited to 'src/GF/Data/ErrM.hs')
| -rw-r--r-- | src/GF/Data/ErrM.hs | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/src/GF/Data/ErrM.hs b/src/GF/Data/ErrM.hs deleted file mode 100644 index e8cea12d4..000000000 --- a/src/GF/Data/ErrM.hs +++ /dev/null @@ -1,38 +0,0 @@ ----------------------------------------------------------------------- --- | --- Module : ErrM --- Maintainer : AR --- Stability : (stable) --- Portability : (portable) --- --- > CVS $Date: 2005/04/21 16:22:00 $ --- > CVS $Author: bringert $ --- > CVS $Revision: 1.5 $ --- --- hack for BNFC generated files. AR 21/9/2003 ------------------------------------------------------------------------------ - -module GF.Data.ErrM (Err(..)) where - -import Control.Monad (MonadPlus(..)) - --- | like @Maybe@ type with error msgs -data Err a = Ok a | Bad String - deriving (Read, Show, Eq) - -instance Monad Err where - return = Ok - fail = Bad - Ok a >>= f = f a - Bad s >>= f = Bad s - --- | added 2\/10\/2003 by PEB -instance Functor Err where - fmap f (Ok a) = Ok (f a) - fmap f (Bad s) = Bad s - --- | added by KJ -instance MonadPlus Err where - mzero = Bad "error (no reason given)" - mplus (Ok a) _ = Ok a - mplus (Bad s) b = b |