Module RW.Build

fromIndex0 :: [a] -> [Int]   

Generates a list [0,1,2,...] with the same length as the input list

fromIndex :: Int -> [a] -> [Int]   

Generates a list [i,i+1,i+2,...] with the same length as the input list

varName :: Int -> String   

Generates a var name for a given index

appendIf :: Bool -> [a] -> a -> [a]   

Appends an element to a list if a given condition is true

Further infos:

• solution complete, i.e., able to compute all solutions

optimizeSingleConstructor :: [a] -> [b] -> [b]   

Removes the first element from a list if the first list's length is 1. Otherwise, the list is returned unchanged.

consArity :: CConsDecl -> Int   

Returns the amount of arguments of a given type constructor

consTypeExpressions :: CConsDecl -> [CTypeExpr]   

Returns the arguments (type expressions) of a given type constructor

isPolymorphic :: CTypeDecl -> Bool   

Returns true if the given type declaration is polymorphic (contains at least one type variable)

isMonomorphic :: CTypeDecl -> Bool   

Returns true if the given type declaration is monomorphic (contains no type variables)

typeVars :: CTypeDecl -> [(Int,String)]   

All type variables occurring in a given type declaration

Further infos:

• solution complete, i.e., able to compute all solutions

unwrapApply :: CTypeExpr -> [CTypeExpr]   

Converts a recursive type expression to a sequence of type expressions

Example: unwrapApply (CTApply (CTApply (Cons "map") (Var "x")) (Var "y")) = [Cons "map", Var "x", Var "y"]

consVars :: CConsDecl -> [(Int,String)]   

All type variables occurring in a given constructor declaration

isTypeVar :: CTypeExpr -> Bool   

Returns true if the given type expression is a type variable

genericTypeVariable :: CTypeExpr   

The type variable used as the placeholder for instance declarations of the ReadWrite class

Further infos:

• solution complete, i.e., able to compute all solutions

classConstraint :: String -> String -> [(Int,String)] -> [((String,String),CTypeExpr)]   

Generates the rwClass constraint for all type variables. Given a type data T t1 ... tn = ... This function can be used to derive all constraints necessary to generate the instance header instance (ReadWrite t1, ..., ReadWrite tn) => ReadWrite (T t1 ... tn)

returnTypeExpr :: Bool -> CTypeExpr -> CTypeExpr -> CTypeExpr   

May or may not add the input type to the output. For a given call > returnTypeExpr r a b If r is true, then the resulting type expression is fun :: b -> (a, b) Otherwise, the resulting expression is fun :: b -> a

This is useful when building type expressions for the read function.

Further infos:

• solution complete, i.e., able to compute all solutions

combineWithR :: (String,String) -> [CExpr] -> CExpr   

Combines all given expressions with a given operator (right-associative)

combineWithL :: (String,String) -> [CExpr] -> CExpr   

Combines all given expressions with a given operator (left-associative)

concatExpr :: [CExpr] -> CExpr   

Concats all given expressions with the ++ operator

applyExpr :: [CExpr] -> CExpr   

Combines all given expressions with the . operator

equalsExpr :: CExpr -> CExpr -> CExpr   

Builds an expression 'e1 == e2'

otherwiseExpr :: CExpr   

otherwise, used for guards

returnExpr :: CExpr -> CStatement   

Further infos:

• solution complete, i.e., able to compute all solutions

typeDeclToTypeExpr :: CTypeDecl -> CTypeExpr   

Converts a type decl data T t1 ... tn = ... to a type expression T1 t1 ... tn

typeDeclToName :: CTypeDecl -> String   

Converts a type decl data T t1 ... tn = ... to a string T

isTypeSyn :: CTypeDecl -> Bool   

Returns true iff the given type declaration is a type synonym

showTypeExpr :: CTypeExpr -> String   

Simple pretty printer for type expressions

Further infos:

• solution complete, i.e., able to compute all solutions

theCons :: (String,String) -> CTypeDecl -> CConsDecl   

Looks up an existing(!) constructor based on its name

anonPattern :: CPattern   

Anonymous pattern "_"

Further infos:

• solution complete, i.e., able to compute all solutions

listRestPattern :: [CPattern] -> CPattern   

Constructs a head:rest-pattern from a list of patterns. For n passed patterns, the resulting pattern is p1:p2:...:pn If the list is empty, the resulting pattern is []

consToPolyPattern :: CConsDecl -> CPattern   

Pattern-matches the first occurrence of every type variable in a given type expression.

For a specific constructor of a type definition data T t1 ... tn = ... | C e1 ... em | ... this function generates a pattern C p1 ... pm where pi (1 <= i <= m) is...

• a variable ei' if ei the first occurence of a polymorphic type variable t1 ... tn in the constructor
• a wildcard _ otherwise

Example: data T a = C a String a [a] consToPolyPattern C -> C a' _

undefinedConstructorRule :: CConsDecl -> CRule   

Generates a useless rule.

instances :: CurryProg -> [CInstanceDecl]   

Returns the instance declarations of a curry program

Further infos:

• solution complete, i.e., able to compute all solutions

instanceName :: CInstanceDecl -> (String,String)   

Returns the name of an instance declaration

Further infos:

• solution complete, i.e., able to compute all solutions

flatProgToAbstract :: Prog -> CurryProg   

Converts a flatcurry program to an abstractcurry program. Extracts only the name, imports and type definitions.

Converts FCY type synonyms to ACT data declarations.

Naming scheme for type variables of polymorphic type definitions: data T a ... z a1 ... z1 ... = ...

whenJust :: Maybe a -> (a -> Bool) -> Bool   

auxiliary util functions If just a value is given, the predicate is applied to the value. Otherwise, false is returned.

none :: (a -> Bool) -> [a] -> Bool   

not . any

snd3 :: (a,b,c) -> b   

snd of a triple

Further infos:

• solution complete, i.e., able to compute all solutions