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https://github.com/macocianradu/RosettaHaskellCompiler.git
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Working coercions, with one assign-ouput
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Macocian Adrian Radu
@@ -7,6 +7,7 @@ import Model.Function
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import PrettyPrinter.General
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import PrettyPrinter.Type
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import Model.Type
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import Semantic.ExpressionChecker(coercionIncluded)
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-- show printStatementTree
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@@ -16,36 +17,48 @@ printFunction f = show $ vcat [printFunctionSignature (sign f), printFunctionBod
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-- |Converts the body of a Function into a haskell valid Doc
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printFunctionBody :: ExplicitFunction -> Doc a
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printFunctionBody (MakeExplicitFunction (MakeFunctionSignature name _ inp out) ex) = pretty name <+> printVariableNames inp <+> "=" <+> printExpression ex
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printExpression :: ExplicitExpression -> Doc a
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printExpression ExplicitEmpty = "[]"
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printExpression (ExplicitVariable name coer) = printCoercion coer $ pretty name
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printExpression (Value s coer) = printCoercion coer $ pretty s
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printExpression (ExplicitParens ex) = "(" <> printExpression ex <> ")"
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printExpression (ExplicitList ex) = list (map printExpression ex)
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printExpression (ExplicitFunction "exists" args returnCoerce) = printCoercion returnCoerce "isJust" <+> printCoercion (snd $ head args) (printExpression $ fst $ head args)
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printExpression (ExplicitFunction "is absent" args returnCoerce) = printCoercion returnCoerce "isNothing" <+> printCoercion (snd $ head args) (printExpression $ fst $ head args)
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printExpression (ExplicitFunction "single exists" args returnCoerce) = printCoercion returnCoerce "length" <+> printCoercion (snd $ head args) (printExpression $ fst $ head args) <+> "==" <+> "1"
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printExpression (ExplicitFunction "multiple exists" args returnCoerce) = printCoercion returnCoerce "length" <+> printCoercion (snd $ head args) (printExpression $ fst $ head args) <+> ">" <+> "1"
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printExpression (ExplicitFunction "count" args returnCoerce) = printCoercion returnCoerce "length" <+> printCoercion (snd $ head args) (printExpression $ fst $ head args)
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printFunctionBody (MakeExplicitFunction (MakeFunctionSignature name _ inp out) ex) = pretty name <+> printVariableNames inp <+> "=" <+> printExpression ex (createCoercion (attributeType out, Model.Type.cardinality out))
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printExpression :: ExplicitExpression -> Coercion -> Doc a
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printExpression ExplicitEmpty _ = "[]"
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printExpression (ExplicitVariable name coer) out = case coer `coercionIncluded` out of
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Left err -> error $ show err
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Right c -> printCoercion c $ pretty name
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printExpression (Value s coer) out = case coer `coercionIncluded` out of
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Left err -> error $ show err
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Right c -> printCoercion c $ pretty s
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printExpression (ExplicitParens ex) out = "(" <> printExpression ex out <> ")"
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printExpression (ExplicitList ex) out = list [printExpression x out | x <- ex]
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printExpression (ExplicitFunction "exists" args returnCoerce) out = printCoercion returnCoerce "isJust" <+> printCoercion (snd $ head args) (printExpression (fst $ head args) out)
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printExpression (ExplicitFunction "is absent" args returnCoerce) out = printCoercion returnCoerce "isNothing" <+> printCoercion (snd $ head args) (printExpression (fst $ head args) out)
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printExpression (ExplicitFunction "single exists" args returnCoerce) out = printCoercion returnCoerce "length" <+> printCoercion (snd $ head args) (printExpression (fst $ head args) out) <+> "==" <+> "1"
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printExpression (ExplicitFunction "multiple exists" args returnCoerce) out = printCoercion returnCoerce "length" <+> printCoercion (snd $ head args) (printExpression (fst $ head args) out) <+> ">" <+> "1"
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printExpression (ExplicitFunction "count" args returnCoerce) out = printCoercion returnCoerce "length" <+> printCoercion (snd $ head args) (printExpression (fst $ head args) out)
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-- Equality expressions
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-- [a] a all =
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-- any <>
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printExpression (ExplicitFunction "=" args returnCoerce) = printCoercion (snd $ head args) (printExpression $ fst $ head args) <+> "==" <+> printCoercion (snd $ head $ tail args) (printExpression $ fst $ head $ tail args)
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printExpression (ExplicitFunction "<>" args returnCoerce) = printCoercion (snd $ head args) (printExpression $ fst $ head args) <+> "/=" <+> printCoercion (snd $ head $ tail args) (printExpression $ fst $ head $ tail args)
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printExpression (ExplicitFunction "any =" args returnCoerce) = printCoercion (snd $ head $ tail args) (printExpression $ fst $ head $ tail args)<+> "`elem`" <+> printCoercion (snd $ head args) (printExpression $ fst $ head args)
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printExpression (ExplicitFunction "all <>" args returnCoerce) = printCoercion (snd $ head $ tail args) (printExpression $ fst $ head $ tail args)<+> "`notElem`" <+> printCoercion (snd $ head args) (printExpression $ fst $ head args)
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printExpression (ExplicitFunction "all =" args returnCoerce) = "all (Eq)" <+> printCoercion (snd $ head $ tail args) (printExpression $ fst $ head $ tail args) <+> printCoercion (snd $ head args) (printExpression $ fst $ head args)
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printExpression (ExplicitFunction "and" args returnCoerce) = printCoercion (snd $ head args) (printExpression $ fst $ head args) <+> "&&" <+> printCoercion (snd $ head $ tail args) (printExpression $ fst $ head $ tail args)
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printExpression (ExplicitFunction "or" args returnCoerce) = printCoercion (snd $ head args) (printExpression $ fst $ head args) <+> "||" <+> printCoercion (snd $ head $ tail args) (printExpression $ fst $ head $ tail args)
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printExpression (ExplicitFunction name args returnCoerce) = pretty name <+> tupled (zipWith printCoercion [c | (e,c) <- args] [printExpression e | (e, c) <- args])
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printExpression (ExplicitIfSimple cond thenBlock returnCoercion) = "if" <+> printCoercion (snd cond) (printExpression $ fst cond) <+> "then" <+> printCoercion (snd thenBlock) (printExpression $ fst thenBlock) <+> "else" <+> "Nothing"
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printExpression (ExplicitIfElse cond thenBlock elseBlock returnCoercion) = "if" <+> printCoercion (snd cond) (printExpression $ fst cond) <+> "then" <+> printCoercion (snd thenBlock) (printExpression $ fst thenBlock) <+> "else" <+> printCoercion (snd elseBlock) (printExpression $ fst elseBlock)
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printExpression (ExplicitFunction "=" args returnCoerce) out = printCoercion (snd $ head args) (printExpression (fst $ head args) out) <+> "==" <+> printCoercion (snd $ head $ tail args) (printExpression (fst $ head $ tail args) out)
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printExpression (ExplicitFunction "<>" args returnCoerce) out = printCoercion (snd $ head args) (printExpression (fst $ head args) out) <+> "/=" <+> printCoercion (snd $ head $ tail args) (printExpression (fst $ head $ tail args) out)
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printExpression (ExplicitFunction "any =" args returnCoerce) out = printCoercion (snd $ head $ tail args) (printExpression (fst $ head $ tail args) out) <+> "`elem`" <+> printCoercion (snd $ head args) (printExpression (fst $ head args) out)
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printExpression (ExplicitFunction "all <>" args returnCoerce) out = printCoercion (snd $ head $ tail args) (printExpression (fst $ head $ tail args) out) <+> "`notElem`" <+> printCoercion (snd $ head args) (printExpression (fst $ head args) out)
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printExpression (ExplicitFunction "all =" args returnCoerce) out = "all (Eq)" <+> printCoercion (snd $ head $ tail args) (printExpression (fst $ head $ tail args) out) <+> printCoercion (snd $ head args) (printExpression (fst $ head args) out)
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printExpression (ExplicitFunction "and" args returnCoerce) out = printCoercion (snd $ head args) (printExpression (fst $ head args) out) <+> "&&" <+> printCoercion (snd $ head $ tail args) (printExpression (fst $ head $ tail args) out)
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printExpression (ExplicitFunction "or" args returnCoerce) out = printCoercion (snd $ head args) (printExpression (fst $ head args) out) <+> "||" <+> printCoercion (snd $ head $ tail args) (printExpression (fst $ head $ tail args) out)
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printExpression (ExplicitFunction name args returnCoerce) out = pretty name <+> tupled (zipWith printCoercion [c | (e,c) <- args] [printExpression e out | (e, c) <- args])
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printExpression (ExplicitIfSimple cond thenBlock returnCoercion) out =
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"if" <+> printCoercion (snd cond) (printExpression (fst cond) (MakeCoercion [MakeIdCoercion (BasicType "Boolean")] (MakeCardinalityIdCoercion (Bounds (1, 1))))) <+>
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"then" <+> printCoercion (snd thenBlock) (printExpression (fst thenBlock) out) <+>
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"else" <+> case MakeCoercion [MakeIdCoercion $ coercionType $ typeCoercion returnCoercion] (MakeCardinalityIdCoercion (Bounds (0, 0))) `coercionIncluded` out of
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Left err -> error $ show err
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Right c -> printCoercion c emptyDoc
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printExpression (ExplicitIfElse cond thenBlock elseBlock returnCoercion) out =
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"if" <+> printCoercion (snd cond) (printExpression (fst cond) (MakeCoercion [MakeIdCoercion (BasicType "Boolean")] (MakeCardinalityIdCoercion (Bounds (1, 1))))) <+>
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"then" <+> printCoercion (snd thenBlock) (printExpression (fst thenBlock) out) <+>
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"else" <+> printCoercion (snd elseBlock) (printExpression (fst elseBlock) out)
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-- |Converts a coercion into a haskell string
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printCoercion :: Coercion -> Doc a -> Doc a
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printCoercion (MakeCoercion [] crd) d = printCardinalityCoercion crd d
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printCoercion (MakeCoercion (t: ts) crd) d = printTypeCoercion t <+> printCoercion (MakeCoercion ts crd) d
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printCoercion (MakeCoercion (t: ts) crd) d = printTypeCoercion t <> printCoercion (MakeCoercion ts crd) d
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printCardinalityCoercion :: CardinalityCoercion -> Doc a -> Doc a
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printCardinalityCoercion (MakeCardinalityIdCoercion _) d = d
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@@ -58,8 +71,8 @@ printCardinalityCoercion (MakeObject2ListCoercion _ _) d = "[" <> d <> "]"
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printTypeCoercion :: TypeCoercion -> Doc a
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printTypeCoercion (MakeIdCoercion _) = emptyDoc
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printTypeCoercion (MakeSuperCoercion _ _) = "super"
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printTypeCoercion (MakeTypeCoercion _ _ t) = pretty t
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printTypeCoercion (MakeSuperCoercion _ _) = "super" <+> emptyDoc
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printTypeCoercion (MakeTypeCoercion _ _ t) = pretty t <+> emptyDoc
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-- |Converts a list of type attributes to a Doc with a list of variable names
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printVariableNames :: [TypeAttribute] -> Doc a
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@@ -112,8 +112,12 @@ checkExpression symbolMap (IfSimple cond ex) =
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Left err -> Left err
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Right thenExp ->
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Right $ ExplicitIfSimple (condType, condCoerce)
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(thenExp, MakeCoercion [MakeIdCoercion $ coercionType $ typeCoercion $ returnCoercion thenExp]
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(MakeCardinalityIdCoercion $ toCardinality $ cardinalityCoercion $ returnCoercion thenExp)) (returnCoercion thenExp)
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(thenExp, thenCoercion)
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(MakeCoercion [MakeIdCoercion $ coercionType $ typeCoercion $ returnCoercion thenExp]
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(MakeCardinalityIdCoercion $ smallestBound (Bounds (0, 0)) (toCardinality $ cardinalityCoercion $ returnCoercion thenExp)))
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where
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thenCoercion = MakeCoercion [MakeIdCoercion $ coercionType $ typeCoercion $ returnCoercion thenExp]
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(MakeCardinalityIdCoercion $ toCardinality $ cardinalityCoercion $ returnCoercion thenExp)
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-- |Checks if the condition of the if statement is of type boolean, and then checks that both the then and else statements have the same type
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checkExpression symbolMap (IfElse cond ex1 ex2) =
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@@ -217,13 +221,13 @@ findVarType x (_:symbols) = findVarType x symbols
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isSubType :: Type -> Type -> Either TypeCheckError [TypeCoercion]
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isSubType (BasicType "Integer") (BasicType "Double") = Right [MakeTypeCoercion (BasicType "Integer") (BasicType "Double") "fromInteger"]
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isSubType (BasicType x) y
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| x == typeName y = Right [MakeTypeCoercion y y "id"]
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| x == typeName y = Right [MakeIdCoercion y]
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| otherwise = Left $ TypeMismatch x (typeName y)
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isSubType x y
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| typeName x == typeName y = Right [MakeTypeCoercion x y "id"]
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| typeName x == typeName y = Right [MakeIdCoercion x]
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| otherwise = case isSubType (superType x) y of
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Left e -> Left e
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Right transforms -> Right $ MakeTypeCoercion x y "super" : transforms
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Right transforms -> Right $ MakeSuperCoercion x y : transforms
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-- |Checks whether the first cardinality is included into the second one
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cardinalityIncluded :: Cardinality -> Cardinality -> Either TypeCheckError CardinalityCoercion
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@@ -238,6 +242,7 @@ cardinalityIncluded (Bounds (0, 1)) (OneBound 0) = Right $ MakeMaybe2ListCoercio
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cardinalityIncluded (Bounds (1, 1)) (Bounds (0, 1)) = Right $ MakeObject2MaybeCoercion (Bounds (0, 1)) (Bounds (0, 1))
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-- |Transform object into list
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cardinalityIncluded (Bounds (1, 1)) (OneBound 1) = Right $ MakeObject2ListCoercion (Bounds (0, 1)) (OneBound 1)
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cardinalityIncluded (Bounds (1, 1)) (OneBound 0) = Right $ MakeObject2ListCoercion (Bounds (0, 1)) (OneBound 1)
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-- |General
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cardinalityIncluded (OneBound x) (OneBound y)
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| x >= y = Right $ MakeListCardinalityCoercion (OneBound x) (OneBound y)
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@@ -19,7 +19,8 @@ checkFunction (definedTypes, symbols) (MakeFunction (MakeFunctionSignature name
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Left err -> Left [err]
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Right checkedEx -> case returnCoercion checkedEx `coercionIncluded` createCoercion (attributeType checkedOut, Model.Type.cardinality out) of
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Left err -> Left [err]
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Right _ -> Right $ MakeExplicitFunction (MakeFunctionSignature (toLower (head name) : tail name) desc (rights checkedIn) checkedOut) checkedEx
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Right retCoercion -> Right $ MakeExplicitFunction (MakeFunctionSignature (toLower (head name) : tail name) desc (rights checkedIn) checkedOut) checkedEx
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--Right _ -> error $ show (returnCoercion checkedEx) ++ " // " ++ show (createCoercion (attributeType checkedOut, Model.Type.cardinality out))
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else
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Left $ lefts checkedIn
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where checkedIn = checkAttributes definedTypes inp
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