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|
module FlatCurry.Goodies where
import FlatCurry.Types
type Update a b = (b -> b) -> a -> a
trProg :: (String -> [String] -> [TypeDecl] -> [FuncDecl] -> [OpDecl] -> a)
-> Prog -> a
trProg prog (Prog name imps types funcs ops) = prog name imps types funcs ops
progName :: Prog -> String
progName = trProg (\name _ _ _ _ -> name)
progImports :: Prog -> [String]
progImports = trProg (\_ imps _ _ _ -> imps)
progTypes :: Prog -> [TypeDecl]
progTypes = trProg (\_ _ types _ _ -> types)
progFuncs :: Prog -> [FuncDecl]
progFuncs = trProg (\_ _ _ funcs _ -> funcs)
progOps :: Prog -> [OpDecl]
progOps = trProg (\_ _ _ _ ops -> ops)
updProg :: (String -> String) ->
([String] -> [String]) ->
([TypeDecl] -> [TypeDecl]) ->
([FuncDecl] -> [FuncDecl]) ->
([OpDecl] -> [OpDecl]) -> Prog -> Prog
updProg fn fi ft ff fo = trProg prog
where
prog name imps types funcs ops
= Prog (fn name) (fi imps) (ft types) (ff funcs) (fo ops)
updProgName :: Update Prog String
updProgName f = updProg f id id id id
updProgImports :: Update Prog [String]
updProgImports f = updProg id f id id id
updProgTypes :: Update Prog [TypeDecl]
updProgTypes f = updProg id id f id id
updProgFuncs :: Update Prog [FuncDecl]
updProgFuncs f = updProg id id id f id
updProgOps :: Update Prog [OpDecl]
updProgOps = updProg id id id id
allVarsInProg :: Prog -> [VarIndex]
allVarsInProg = concatMap allVarsInFunc . progFuncs
updProgExps :: Update Prog Expr
updProgExps = updProgFuncs . map . updFuncBody
rnmAllVarsInProg :: Update Prog VarIndex
rnmAllVarsInProg = updProgFuncs . map . rnmAllVarsInFunc
updQNamesInProg :: Update Prog QName
updQNamesInProg f = updProg id id
(map (updQNamesInType f)) (map (updQNamesInFunc f)) (map (updOpName f))
rnmProg :: String -> Prog -> Prog
rnmProg name p = updProgName (const name) (updQNamesInProg rnm p)
where
rnm (mod,n) | mod==progName p = (name,n)
| otherwise = (mod,n)
trType :: (QName -> Visibility -> [Int] -> [ConsDecl] -> a) ->
(QName -> Visibility -> [Int] -> TypeExpr -> a) -> TypeDecl -> a
trType typ _ (Type name vis params cs) = typ name vis params cs
trType _ typesyn (TypeSyn name vis params syn) = typesyn name vis params syn
typeName :: TypeDecl -> QName
typeName = trType (\name _ _ _ -> name) (\name _ _ _ -> name)
typeVisibility :: TypeDecl -> Visibility
typeVisibility = trType (\_ vis _ _ -> vis) (\_ vis _ _ -> vis)
typeParams :: TypeDecl -> [TVarIndex]
typeParams = trType (\_ _ params _ -> params) (\_ _ params _ -> params)
typeConsDecls :: TypeDecl -> [ConsDecl]
typeConsDecls = trType (\_ _ _ cs -> cs) failed
typeSyn :: TypeDecl -> TypeExpr
typeSyn = trType failed (\_ _ _ syn -> syn)
isTypeSyn :: TypeDecl -> Bool
isTypeSyn = trType (\_ _ _ _ -> False) (\_ _ _ _ -> True)
updType :: (QName -> QName) ->
(Visibility -> Visibility) ->
([Int] -> [Int]) ->
([ConsDecl] -> [ConsDecl]) ->
(TypeExpr -> TypeExpr) -> TypeDecl -> TypeDecl
updType fn fv fp fc fs = trType typ typesyn
where
typ name vis params cs = Type (fn name) (fv vis) (fp params) (fc cs)
typesyn name vis params syn = TypeSyn (fn name) (fv vis) (fp params) (fs syn)
updTypeName :: Update TypeDecl QName
updTypeName f = updType f id id id id
updTypeVisibility :: Update TypeDecl Visibility
updTypeVisibility f = updType id f id id id
updTypeParams :: Update TypeDecl [TVarIndex]
updTypeParams f = updType id id f id id
updTypeConsDecls :: Update TypeDecl [ConsDecl]
updTypeConsDecls f = updType id id id f id
updTypeSynonym :: Update TypeDecl TypeExpr
updTypeSynonym = updType id id id id
updQNamesInType :: Update TypeDecl QName
updQNamesInType f
= updType f id id (map (updQNamesInConsDecl f)) (updQNamesInTypeExpr f)
trCons :: (QName -> Int -> Visibility -> [TypeExpr] -> a) -> ConsDecl -> a
trCons cons (Cons name arity vis args) = cons name arity vis args
consName :: ConsDecl -> QName
consName = trCons (\name _ _ _ -> name)
consArity :: ConsDecl -> Int
consArity = trCons (\_ arity _ _ -> arity)
consVisibility :: ConsDecl -> Visibility
consVisibility = trCons (\_ _ vis _ -> vis)
consArgs :: ConsDecl -> [TypeExpr]
consArgs = trCons (\_ _ _ args -> args)
updCons :: (QName -> QName) ->
(Int -> Int) ->
(Visibility -> Visibility) ->
([TypeExpr] -> [TypeExpr]) -> ConsDecl -> ConsDecl
updCons fn fa fv fas = trCons cons
where
cons name arity vis args = Cons (fn name) (fa arity) (fv vis) (fas args)
updConsName :: Update ConsDecl QName
updConsName f = updCons f id id id
updConsArity :: Update ConsDecl Int
updConsArity f = updCons id f id id
updConsVisibility :: Update ConsDecl Visibility
updConsVisibility f = updCons id id f id
updConsArgs :: Update ConsDecl [TypeExpr]
updConsArgs = updCons id id id
updQNamesInConsDecl :: Update ConsDecl QName
updQNamesInConsDecl f = updCons f id id (map (updQNamesInTypeExpr f))
tVarIndex :: TypeExpr -> TVarIndex
tVarIndex texpr = case texpr of
(TVar n) -> n
_ -> error "FlatCurryGoodies.tVarIndex: no type variable"
domain :: TypeExpr -> TypeExpr
domain texpr = case texpr of
(FuncType dom _) -> dom
_ -> error "FlatCurryGoodies.domain: no functional type"
range :: TypeExpr -> TypeExpr
range texpr = case texpr of
(FuncType _ ran) -> ran
_ -> error "FlatCurryGoodies.range: no functional type"
tConsName :: TypeExpr -> QName
tConsName texpr = case texpr of
(TCons name _) -> name
_ -> error "FlatCurryGoodies.tConsName: no constructed type"
tConsArgs :: TypeExpr -> [TypeExpr]
tConsArgs texpr = case texpr of
(TCons _ args) -> args
_ -> error "FlatCurryGoodies.tConsArgs: no constructed type"
trTypeExpr :: (Int -> a) ->
(QName -> [a] -> a) ->
(a -> a -> a) -> TypeExpr -> a
trTypeExpr tvar _ _ (TVar n) = tvar n
trTypeExpr tvar tcons functype (TCons name args)
= tcons name (map (trTypeExpr tvar tcons functype) args)
trTypeExpr tvar tcons functype (FuncType from to) = functype (f from) (f to)
where
f = trTypeExpr tvar tcons functype
isTVar :: TypeExpr -> Bool
isTVar = trTypeExpr (\_ -> True) (\_ _ -> False) (\_ _ -> False)
isTCons :: TypeExpr -> Bool
isTCons = trTypeExpr (\_ -> False) (\_ _ -> True) (\_ _ -> False)
isFuncType :: TypeExpr -> Bool
isFuncType = trTypeExpr (\_ -> False) (\_ _ -> False) (\_ _ -> True)
updTVars :: (Int -> TypeExpr) -> TypeExpr -> TypeExpr
updTVars tvar = trTypeExpr tvar TCons FuncType
updTCons :: (QName -> [TypeExpr] -> TypeExpr) -> TypeExpr -> TypeExpr
updTCons tcons = trTypeExpr TVar tcons FuncType
updFuncTypes :: (TypeExpr -> TypeExpr -> TypeExpr) -> TypeExpr -> TypeExpr
updFuncTypes = trTypeExpr TVar TCons
argTypes :: TypeExpr -> [TypeExpr]
argTypes (TVar _) = []
argTypes (TCons _ _) = []
argTypes (FuncType dom ran) = dom : argTypes ran
resultType :: TypeExpr -> TypeExpr
resultType (TVar n) = TVar n
resultType (TCons name args) = TCons name args
resultType (FuncType _ ran) = resultType ran
rnmAllVarsInTypeExpr :: (Int -> Int) -> TypeExpr -> TypeExpr
rnmAllVarsInTypeExpr f = updTVars (TVar . f)
updQNamesInTypeExpr :: (QName -> QName) -> TypeExpr -> TypeExpr
updQNamesInTypeExpr f = updTCons (\name args -> TCons (f name) args)
trOp :: (QName -> Fixity -> Int -> a) -> OpDecl -> a
trOp op (Op name fix prec) = op name fix prec
opName :: OpDecl -> QName
opName = trOp (\name _ _ -> name)
opFixity :: OpDecl -> Fixity
opFixity = trOp (\_ fix _ -> fix)
opPrecedence :: OpDecl -> Int
opPrecedence = trOp (\_ _ prec -> prec)
updOp :: (QName -> QName) ->
(Fixity -> Fixity) ->
(Int -> Int) -> OpDecl -> OpDecl
updOp fn ff fp = trOp op
where
op name fix prec = Op (fn name) (ff fix) (fp prec)
updOpName :: Update OpDecl QName
updOpName f = updOp f id id
updOpFixity :: Update OpDecl Fixity
updOpFixity f = updOp id f id
updOpPrecedence :: Update OpDecl Int
updOpPrecedence = updOp id id
trFunc :: (QName -> Int -> Visibility -> TypeExpr -> Rule -> a) -> FuncDecl -> a
trFunc func (Func name arity vis t rule) = func name arity vis t rule
funcName :: FuncDecl -> QName
funcName = trFunc (\name _ _ _ _ -> name)
funcArity :: FuncDecl -> Int
funcArity = trFunc (\_ arity _ _ _ -> arity)
funcVisibility :: FuncDecl -> Visibility
funcVisibility = trFunc (\_ _ vis _ _ -> vis)
funcType :: FuncDecl -> TypeExpr
funcType = trFunc (\_ _ _ t _ -> t)
funcRule :: FuncDecl -> Rule
funcRule = trFunc (\_ _ _ _ rule -> rule)
updFunc :: (QName -> QName) ->
(Int -> Int) ->
(Visibility -> Visibility) ->
(TypeExpr -> TypeExpr) ->
(Rule -> Rule) -> FuncDecl -> FuncDecl
updFunc fn fa fv ft fr = trFunc func
where
func name arity vis t rule
= Func (fn name) (fa arity) (fv vis) (ft t) (fr rule)
updFuncName :: Update FuncDecl QName
updFuncName f = updFunc f id id id id
updFuncArity :: Update FuncDecl Int
updFuncArity f = updFunc id f id id id
updFuncVisibility :: Update FuncDecl Visibility
updFuncVisibility f = updFunc id id f id id
updFuncType :: Update FuncDecl TypeExpr
updFuncType f = updFunc id id id f id
updFuncRule :: Update FuncDecl Rule
updFuncRule = updFunc id id id id
isExternal :: FuncDecl -> Bool
isExternal = isRuleExternal . funcRule
allVarsInFunc :: FuncDecl -> [Int]
allVarsInFunc = allVarsInRule . funcRule
funcArgs :: FuncDecl -> [Int]
funcArgs = ruleArgs . funcRule
funcBody :: FuncDecl -> Expr
funcBody = ruleBody . funcRule
funcRHS :: FuncDecl -> [Expr]
funcRHS f | not (isExternal f) = orCase (funcBody f)
| otherwise = []
where
orCase e
| isOr e = concatMap orCase (orExps e)
| isCase e = concatMap orCase (map branchExpr (caseBranches e))
| otherwise = [e]
rnmAllVarsInFunc :: Update FuncDecl VarIndex
rnmAllVarsInFunc = updFunc id id id id . rnmAllVarsInRule
updQNamesInFunc :: Update FuncDecl QName
updQNamesInFunc f = updFunc f id id (updQNamesInTypeExpr f) (updQNamesInRule f)
updFuncArgs :: Update FuncDecl [VarIndex]
updFuncArgs = updFuncRule . updRuleArgs
updFuncBody :: Update FuncDecl Expr
updFuncBody = updFuncRule . updRuleBody
trRule :: ([Int] -> Expr -> a) -> (String -> a) -> Rule -> a
trRule rule _ (Rule args exp) = rule args exp
trRule _ ext (External s) = ext s
ruleArgs :: Rule -> [Int]
ruleArgs = trRule (\args _ -> args) failed
ruleBody :: Rule -> Expr
ruleBody = trRule (\_ exp -> exp) failed
ruleExtDecl :: Rule -> String
ruleExtDecl = trRule failed id
isRuleExternal :: Rule -> Bool
isRuleExternal = trRule (\_ _ -> False) (\_ -> True)
updRule :: ([Int] -> [Int]) ->
(Expr -> Expr) ->
(String -> String) -> Rule -> Rule
updRule fa fe fs = trRule rule ext
where
rule args exp = Rule (fa args) (fe exp)
ext s = External (fs s)
updRuleArgs :: Update Rule [VarIndex]
updRuleArgs f = updRule f id id
updRuleBody :: Update Rule Expr
updRuleBody f = updRule id f id
updRuleExtDecl :: Update Rule String
updRuleExtDecl f = updRule id id f
allVarsInRule :: Rule -> [Int]
allVarsInRule = trRule (\args body -> args ++ allVars body) (\_ -> [])
rnmAllVarsInRule :: Update Rule VarIndex
rnmAllVarsInRule f = updRule (map f) (rnmAllVars f) id
updQNamesInRule :: Update Rule QName
updQNamesInRule = updRuleBody . updQNames
trCombType :: a -> (Int -> a) -> a -> (Int -> a) -> CombType -> a
trCombType fc _ _ _ FuncCall = fc
trCombType _ fpc _ _ (FuncPartCall n) = fpc n
trCombType _ _ cc _ ConsCall = cc
trCombType _ _ _ cpc (ConsPartCall n) = cpc n
isCombTypeFuncCall :: CombType -> Bool
isCombTypeFuncCall = trCombType True (\_ -> False) False (\_ -> False)
isCombTypeFuncPartCall :: CombType -> Bool
isCombTypeFuncPartCall = trCombType False (\_ -> True) False (\_ -> False)
isCombTypeConsCall :: CombType -> Bool
isCombTypeConsCall = trCombType False (\_ -> False) True (\_ -> False)
isCombTypeConsPartCall :: CombType -> Bool
isCombTypeConsPartCall = trCombType False (\_ -> False) False (\_ -> True)
missingArgs :: CombType -> Int
missingArgs = trCombType 0 id 0 id
varNr :: Expr -> Int
varNr expr = case expr of
(Var n) -> n
_ -> error "FlatCurryGoodies.varNr: no variable"
literal :: Expr -> Literal
literal expr = case expr of
(Lit l) -> l
_ -> error "FlatCurryGoodies.literal: no literal"
combType :: Expr -> CombType
combType expr = case expr of
(Comb ct _ _) -> ct
_ -> error "FlatCurryGoodies.combType: no combined expression"
combName :: Expr -> QName
combName expr = case expr of
(Comb _ name _) -> name
_ -> error "FlatCurryGoodies.combName: no combined expression"
combArgs :: Expr -> [Expr]
combArgs expr = case expr of
(Comb _ _ args) -> args
_ -> error "FlatCurryGoodies.combArgs: no combined expression"
missingCombArgs :: Expr -> Int
missingCombArgs = missingArgs . combType
letBinds :: Expr -> [(Int,Expr)]
letBinds expr = case expr of
(Let vs _) -> vs
_ -> error "FlatCurryGoodies.letBinds: no let declaration"
letBody :: Expr -> Expr
letBody expr = case expr of
(Let _ e) -> e
_ -> error "FlatCurryGoodies.letBody: no let declaration"
freeVars :: Expr -> [Int]
freeVars expr = case expr of
(Free vs _) -> vs
_ -> error "FlatCurryGoodies.freeVars: no free variable declaration"
freeExpr :: Expr -> Expr
freeExpr expr = case expr of
(Free _ e) -> e
_ -> error "FlatCurryGoodies.freeExpr: no free variable declaration"
orExps :: Expr -> [Expr]
orExps expr = case expr of
(Or e1 e2) -> [e1,e2]
_ -> error "FlatCurryGoodies.orExps: no or-expression"
caseType :: Expr -> CaseType
caseType expr = case expr of
(Case ct _ _) -> ct
_ -> error "FlatCurryGoodies.caseType: no case expression"
caseExpr :: Expr -> Expr
caseExpr expr = case expr of
(Case _ e _) -> e
_ -> error "FlatCurryGoodies.caseExpr: no case expression"
caseBranches :: Expr -> [BranchExpr]
caseBranches expr = case expr of
(Case _ _ bs) -> bs
_ -> error "FlatCurryGoodies.caseBranches: no case expression"
isVar :: Expr -> Bool
isVar e = case e of
Var _ -> True
_ -> False
isLit :: Expr -> Bool
isLit e = case e of
Lit _ -> True
_ -> False
isComb :: Expr -> Bool
isComb e = case e of
Comb _ _ _ -> True
_ -> False
isLet :: Expr -> Bool
isLet e = case e of
Let _ _ -> True
_ -> False
isFree :: Expr -> Bool
isFree e = case e of
Free _ _ -> True
_ -> False
isOr :: Expr -> Bool
isOr e = case e of
Or _ _ -> True
_ -> False
isCase :: Expr -> Bool
isCase e = case e of
Case _ _ _ -> True
_ -> False
trExpr :: (Int -> a) ->
(Literal -> a) ->
(CombType -> QName -> [a] -> a) ->
([(Int,a)] -> a -> a) ->
([Int] -> a -> a) ->
(a -> a -> a) ->
(CaseType -> a -> [b] -> a) ->
(Pattern -> a -> b) ->
(a -> TypeExpr -> a)
-> Expr -> a
trExpr var _ _ _ _ _ _ _ _ (Var n) = var n
trExpr _ lit _ _ _ _ _ _ _ (Lit l) = lit l
trExpr var lit comb lt fr or cas branch typed (Comb ct name args)
= comb ct name (map (trExpr var lit comb lt fr or cas branch typed) args)
trExpr var lit comb lt fr or cas branch typed (Let bs e)
= lt (map (\ (n,exp) -> (n,f exp)) bs) (f e)
where
f = trExpr var lit comb lt fr or cas branch typed
trExpr var lit comb lt fr or cas branch typed (Free vs e)
= fr vs (trExpr var lit comb lt fr or cas branch typed e)
trExpr var lit comb lt fr or cas branch typed (Or e1 e2) = or (f e1) (f e2)
where
f = trExpr var lit comb lt fr or cas branch typed
trExpr var lit comb lt fr or cas branch typed (Case ct e bs)
= cas ct (f e) (map (\ (Branch pat exp) -> branch pat (f exp)) bs)
where
f = trExpr var lit comb lt fr or cas branch typed
trExpr var lit comb lt fr or cas branch typed (Typed e ty)
= typed (trExpr var lit comb lt fr or cas branch typed e) ty
updVars :: (Int -> Expr) -> Expr -> Expr
updVars var = trExpr var Lit Comb Let Free Or Case Branch Typed
updLiterals :: (Literal -> Expr) -> Expr -> Expr
updLiterals lit = trExpr Var lit Comb Let Free Or Case Branch Typed
updCombs :: (CombType -> QName -> [Expr] -> Expr) -> Expr -> Expr
updCombs comb = trExpr Var Lit comb Let Free Or Case Branch Typed
updLets :: ([(Int,Expr)] -> Expr -> Expr) -> Expr -> Expr
updLets lt = trExpr Var Lit Comb lt Free Or Case Branch Typed
updFrees :: ([Int] -> Expr -> Expr) -> Expr -> Expr
updFrees fr = trExpr Var Lit Comb Let fr Or Case Branch Typed
updOrs :: (Expr -> Expr -> Expr) -> Expr -> Expr
updOrs or = trExpr Var Lit Comb Let Free or Case Branch Typed
updCases :: (CaseType -> Expr -> [BranchExpr] -> Expr) -> Expr -> Expr
updCases cas = trExpr Var Lit Comb Let Free Or cas Branch Typed
updBranches :: (Pattern -> Expr -> BranchExpr) -> Expr -> Expr
updBranches branch = trExpr Var Lit Comb Let Free Or Case branch Typed
updTypeds :: (Expr -> TypeExpr -> Expr) -> Expr -> Expr
updTypeds typed = trExpr Var Lit Comb Let Free Or Case Branch typed
isFuncCall :: Expr -> Bool
isFuncCall e = isComb e && isCombTypeFuncCall (combType e)
isFuncPartCall :: Expr -> Bool
isFuncPartCall e = isComb e && isCombTypeFuncPartCall (combType e)
isConsCall :: Expr -> Bool
isConsCall e = isComb e && isCombTypeConsCall (combType e)
isConsPartCall :: Expr -> Bool
isConsPartCall e = isComb e && isCombTypeConsPartCall (combType e)
isGround :: Expr -> Bool
isGround exp
= case exp of
Comb ConsCall _ args -> all isGround args
_ -> isLit exp
allVars :: Expr -> [Int]
allVars e = trExpr (:) (const id) comb lt fr (.) cas branch const e []
where
comb _ _ = foldr (.) id
lt bs exp = exp . foldr (.) id (map (\ (n,ns) -> (n:) . ns) bs)
fr vs exp = (vs++) . exp
cas _ exp bs = exp . foldr (.) id bs
branch pat exp = ((args pat)++) . exp
args pat | isConsPattern pat = patArgs pat
| otherwise = []
rnmAllVars :: Update Expr Int
rnmAllVars f = trExpr (Var . f) Lit Comb lt (Free . map f) Or Case branch Typed
where
lt = Let . map (\ (n,exp) -> (f n,exp))
branch = Branch . updPatArgs (map f)
updQNames :: Update Expr QName
updQNames f = trExpr Var Lit comb Let Free Or Case (Branch . updPatCons f) typed
where
comb ct name args = Comb ct (f name) args
typed e ty = Typed e (updQNamesInTypeExpr f ty)
trBranch :: (Pattern -> Expr -> a) -> BranchExpr -> a
trBranch branch (Branch pat exp) = branch pat exp
branchPattern :: BranchExpr -> Pattern
branchPattern = trBranch (\pat _ -> pat)
branchExpr :: BranchExpr -> Expr
branchExpr = trBranch (\_ e -> e)
updBranch :: (Pattern -> Pattern) -> (Expr -> Expr) -> BranchExpr -> BranchExpr
updBranch fp fe = trBranch branch
where
branch pat exp = Branch (fp pat) (fe exp)
updBranchPattern :: Update BranchExpr Pattern
updBranchPattern f = updBranch f id
updBranchExpr :: Update BranchExpr Expr
updBranchExpr = updBranch id
trPattern :: (QName -> [Int] -> a) -> (Literal -> a) -> Pattern -> a
trPattern pattern _ (Pattern name args) = pattern name args
trPattern _ lpattern (LPattern l) = lpattern l
patCons :: Pattern -> QName
patCons = trPattern (\name _ -> name) failed
patArgs :: Pattern -> [Int]
patArgs = trPattern (\_ args -> args) failed
patLiteral :: Pattern -> Literal
patLiteral = trPattern failed id
isConsPattern :: Pattern -> Bool
isConsPattern = trPattern (\_ _ -> True) (\_ -> False)
updPattern :: (QName -> QName) ->
([Int] -> [Int]) ->
(Literal -> Literal) -> Pattern -> Pattern
updPattern fn fa fl = trPattern pattern lpattern
where
pattern name args = Pattern (fn name) (fa args)
lpattern l = LPattern (fl l)
updPatCons :: (QName -> QName) -> Pattern -> Pattern
updPatCons f = updPattern f id id
updPatArgs :: ([Int] -> [Int]) -> Pattern -> Pattern
updPatArgs f = updPattern id f id
updPatLiteral :: (Literal -> Literal) -> Pattern -> Pattern
updPatLiteral f = updPattern id id f
patExpr :: Pattern -> Expr
patExpr = trPattern (\ name -> Comb ConsCall name . map Var) Lit
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