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Merged some common code in the usage checker (for processing the Variables)

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Neil Brown 2007-10-29 18:23:46 +00:00
parent cb964c620f
commit 1f97bc7d49
1 changed files with 14 additions and 8 deletions
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22
transformations/RainUsageCheck.hs
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@ -56,6 +56,9 @@ readVars ss = Vars (Set.fromList ss) Set.empty Set.empty Set.empty
writtenVars :: [Var] -> Vars
writtenVars ss = Vars Set.empty (Set.fromList ss) (Set.fromList ss) Set.empty
usedVars :: [Var] -> Vars
usedVars vs = Vars Set.empty Set.empty Set.empty (Set.fromList vs)
vars :: [Var] -> [Var] -> [Var] -> [Var] -> Vars
vars mr mw dw u = Vars (Set.fromList mr) (Set.fromList mw) (Set.fromList dw) (Set.fromList u)
@ -97,16 +100,19 @@ getVarProc _ = emptyVars
--Pull out all the subscripts into the read category, but leave the given var in the written category:
processVarW :: A.Variable -> Vars
processVarW (A.Variable _ n) = writtenVars [Plain $ nameToString n]
processVarW (A.DerefVariable _ (A.Variable _ n)) = writtenVars [Deref $ nameToString n]
--DirectedVariable illegal on the LHS of an assignment/RHS of an input:
processVarW _ = emptyVars
processVarW v = writtenVars [variableToVar v]
processVarR :: A.Variable -> Vars
processVarR (A.Variable _ n) = readVars [Plain $ nameToString n]
processVarR (A.DirectedVariable _ dir (A.Variable _ n)) = readVars [Dir dir $ nameToString n]
processVarR (A.DerefVariable _ (A.Variable _ n)) = readVars [Deref $ nameToString n]
processVarR _ = emptyVars
processVarR v = readVars [variableToVar v]
processVarUsed :: A.Variable -> Vars
processVarUsed v = usedVars [variableToVar v]
variableToVar :: A.Variable -> Var
variableToVar (A.Variable _ n) = Plain $ nameToString n
variableToVar (A.DirectedVariable _ dir (A.Variable _ n)) = Dir dir $ nameToString n
variableToVar (A.DerefVariable _ (A.Variable _ n)) = Deref $ nameToString n
variableToVar v = error ("Unprocessable variable: " ++ show v) --TODO come up with a better solution than this
getVarExpList :: A.ExpressionList -> Vars
getVarExpList (A.ExpressionList _ es) = foldUnionVars $ map getVarExp es