Fixing Alts to reflect Alternatives, rather than every pattern match in Hpc.

[ghc-hetmet.git] / compiler / deSugar / Coverage.lhs

diff --git a/compiler/deSugar/Coverage.lhs b/compiler/deSugar/Coverage.lhs
index 9a53b2b..68bd17f 100644 (file)
--- a/compiler/deSugar/Coverage.lhs
+++ b/compiler/deSugar/Coverage.lhs
@@ -122,7 +122,7 @@ addTickLHsBind (L pos (funBind@(FunBind { fun_id = (L _ id)  })))  = do
   let arg_count = matchGroupArity mg
   let (tys,res_ty) = splitFunTysN arg_count ty
 
-  return $ L pos $ funBind { fun_matches = MatchGroup ({-L pos fn_entry:-}matches') ty 
+  return $ L pos $ funBind { fun_matches = MatchGroup matches' ty 
                           , fun_tick = tick_no
                           }
 
@@ -266,22 +266,30 @@ addTickHsExpr (HsWrap w e) =
        liftM2 HsWrap
                (return w)
                (addTickHsExpr e)       -- explicitly no tick on inside
-addTickHsExpr (HsArrApp         {}) = error "addTickHsExpr:  HsArrApp  "
-addTickHsExpr (HsArrForm {}) = error "addTickHsExpr:  HsArrForm"
+addTickHsExpr (HsArrApp         e1 e2 ty1 arr_ty lr) = 
+        liftM5 HsArrApp
+              (addTickLHsExpr e1)
+              (addTickLHsExpr e2)
+              (return ty1)
+              (return arr_ty)
+              (return lr)
+addTickHsExpr (HsArrForm e fix cmdtop) = 
+        liftM3 HsArrForm
+              (addTickLHsExpr e)
+              (return fix)
+              (mapM (liftL addTickHsCmdTop) cmdtop)
+
+addTickHsExpr e@(HsType ty) = return e
+
+-- Should never happen in expression content.
 addTickHsExpr (EAsPat _ _) = error "addTickHsExpr: EAsPat _ _"
 addTickHsExpr (ELazyPat _) = error "addTickHsExpr: ELazyPat _"
 addTickHsExpr (EWildPat) = error "addTickHsExpr: EWildPat"
 addTickHsExpr (HsBinTick _ _ _) = error "addTickhsExpr: HsBinTick _ _ _"
 addTickHsExpr (HsTick _ _) = error "addTickhsExpr: HsTick _ _"
 
-addTickHsExpr e@(HsType ty) = return e
-
--- catch all, and give an error message.
---addTickHsExpr e = error ("addTickLhsExpr: " ++ showSDoc (ppr e))
-
-
 addTickMatchGroup (MatchGroup matches ty) = do
-  let isOneOfMany = True -- AJG: for now
+  let isOneOfMany = matchesOneOfMany matches
   matches' <- mapM (liftL (addTickMatch isOneOfMany)) matches
   return $ MatchGroup matches' ty
 
@@ -506,6 +514,14 @@ hpcLoc = L hpcSrcSpan
 
 
 \begin{code}
+matchesOneOfMany :: [LMatch Id] -> Bool
+matchesOneOfMany lmatches = sum (map matchCount lmatches) > 1
+  where
+       matchCount (L _ (Match _pats _ty (GRHSs grhss _binds))) = length grhss
+\end{code}
+
+
+\begin{code}
 ---------------------------------------------------------------
 -- Datatypes and file-access routines for the per-module (.mix)
 -- indexes used by Hpc.