makeGivens, makeSolved,
CtFlavor (..), isWanted, isGiven, isDerived, canRewrite,
- joinFlavors, mkGivenFlavor,
+ combineCtLoc, mkGivenFlavor,
TcS, runTcS, failTcS, panicTcS, traceTcS, traceTcS0, -- Basic functionality
tryTcS, nestImplicTcS, wrapErrTcS, wrapWarnTcS,
canRewrite (Wanted {}) (Wanted {}) = True
canRewrite _ _ = False
-joinFlavors :: CtFlavor -> CtFlavor -> CtFlavor
-joinFlavors (Wanted loc) _ = Wanted loc
-joinFlavors _ (Wanted loc) = Wanted loc
-joinFlavors (Derived loc) _ = Derived loc
-joinFlavors _ (Derived loc) = Derived loc
-joinFlavors (Given loc) _ = Given loc
+combineCtLoc :: CtFlavor -> CtFlavor -> WantedLoc
+-- Precondition: At least one of them should be wanted
+combineCtLoc (Wanted loc) _ = loc
+combineCtLoc _ (Wanted loc) = loc
+combineCtLoc (Derived loc) _ = loc
+combineCtLoc _ (Derived loc) = loc
+combineCtLoc _ _ = panic "combineCtLoc: both given"
mkGivenFlavor :: CtFlavor -> SkolemInfo -> CtFlavor
mkGivenFlavor (Wanted loc) sk = Given (setCtLocOrigin loc sk)