diff options
Diffstat (limited to 'old-examples/gfcc/compiler/ErrM.hs')
| -rw-r--r-- | old-examples/gfcc/compiler/ErrM.hs | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/old-examples/gfcc/compiler/ErrM.hs b/old-examples/gfcc/compiler/ErrM.hs deleted file mode 100644 index 85c311a88..000000000 --- a/old-examples/gfcc/compiler/ErrM.hs +++ /dev/null @@ -1,15 +0,0 @@ --- BNF Converter: Error Monad --- Copyright (C) 2004 Author: Aarne Ranta - --- This file comes with NO WARRANTY and may be used FOR ANY PURPOSE. -module ErrM where - --- the Error monad: like Maybe type with error msgs - -data Err a = Ok a | Bad String - deriving (Read, Show, Eq) - -instance Monad Err where - return = Ok - Ok a >>= f = f a - Bad s >>= f = Bad s |