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[project @ 2003-07-16 15:27:36 by sof]
[ghc-hetmet.git]
/
ghc
/
compiler
/
types
/
Class.lhs
diff --git
a/ghc/compiler/types/Class.lhs
b/ghc/compiler/types/Class.lhs
index
3ecb8f8
..
3a37d16
100644
(file)
--- a/
ghc/compiler/types/Class.lhs
+++ b/
ghc/compiler/types/Class.lhs
@@
-10,7
+10,8
@@
module Class (
mkClass, classTyVars, classArity,
classKey, className, classSelIds, classTyCon,
mkClass, classTyVars, classArity,
classKey, className, classSelIds, classTyCon,
- classBigSig, classExtraBigSig, classTvsFds, classSCTheta
+ classBigSig, classExtraBigSig, classTvsFds, classSCTheta,
+ classHasFDs
) where
#include "HsVersions.h"
) where
#include "HsVersions.h"
@@
-23,6
+24,7
@@
import Name ( NamedThing(..), Name )
import BasicTypes ( Arity )
import Unique ( Unique, Uniquable(..) )
import Outputable
import BasicTypes ( Arity )
import Unique ( Unique, Uniquable(..) )
import Outputable
+import Util ( notNull )
\end{code}
%************************************************************************
\end{code}
%************************************************************************
@@
-55,12
+57,13
@@
data Class
type FunDep a = ([a],[a]) -- e.g. class C a b c | a b -> c, a c -> b where ...
-- Here fun-deps are [([a,b],[c]), ([a,c],[b])]
type FunDep a = ([a],[a]) -- e.g. class C a b c | a b -> c, a c -> b where ...
-- Here fun-deps are [([a,b],[c]), ([a,c],[b])]
-type ClassOpItem = (Id, DefMeth Id)
+type ClassOpItem = (Id, DefMeth Name)
-- Selector function; contains unfolding
-- Default-method info
data DefMeth id = NoDefMeth -- No default method
| DefMeth id -- A polymorphic default method (named id)
-- Selector function; contains unfolding
-- Default-method info
data DefMeth id = NoDefMeth -- No default method
| DefMeth id -- A polymorphic default method (named id)
+ -- (Only instantiated to RdrName and Name, never Id)
| GenDefMeth -- A generic default method
deriving Eq
\end{code}
| GenDefMeth -- A generic default method
deriving Eq
\end{code}
@@
-113,6
+116,9
@@
classExtraBigSig (Class {classTyVars = tyvars, classFunDeps = fundeps,
classSCTheta = sc_theta, classSCSels = sc_sels,
classOpStuff = op_stuff})
= (tyvars, fundeps, sc_theta, sc_sels, op_stuff)
classSCTheta = sc_theta, classSCSels = sc_sels,
classOpStuff = op_stuff})
= (tyvars, fundeps, sc_theta, sc_sels, op_stuff)
+
+classHasFDs :: Class -> Bool
+classHasFDs (Class {classFunDeps = fundeps}) = notNull fundeps
\end{code}
\end{code}