| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Test.SmartCheck.Types
- data SubT = forall a . (Arbitrary a, SubTypes a) => SubT {
- unSubT :: a
- subT :: (Arbitrary a, SubTypes a) => a -> SubT
- data Result a
- = BaseType
- | FailedPreCond
- | FailedProp
- | Result a
- class (Arbitrary a, Show a, Typeable a) => SubTypes a where
- data Idx = Idx {}
- data Subst
- data Replace a = Replace {}
- errorMsg :: String -> a
- gst :: GST f => f a -> Forest SubT
- grc :: (GST f, Typeable b) => f a -> Forest Subst -> b -> Maybe (f a)
- gtc :: GST f => f a -> String
- gsf :: GST f => f a -> Forest String
Documentation
Possible results of iterateArb.
Constructors
| BaseType | Base type. Won't analyze. |
| FailedPreCond | Couldn't satisfy the precondition of a QuickCheck property |
| FailedProp | Failed the property---either we expect failure and it passes or we expect to pass it and we fail. |
| Result a | Satisfied it, with the satisfying value. |
class (Arbitrary a, Show a, Typeable a) => SubTypes a where Source
This class covers algebraic datatypes that can be transformed into Trees. subTypes is the main method, placing values into trees.
for a datatype with constructors A and C,
subTypes (A (C 0) 1)
[Node {rootLabel = C 0, subForest = []}]Minimal complete definition
Nothing
Methods
subTypes :: a -> Forest SubT Source
Turns algebraic data into a forest representation.
Base types (e.g., Int, Char) aren't analyzed.
replaceChild :: Typeable b => a -> Forest Subst -> b -> Maybe a Source
Generically replace child i in m with value s. A total function: returns Nothing if you try to replace a child with an ill-typed child s. (Returns Just (the original data) if your index is out of bounds).
toConstr :: a -> String Source
Get the string representation of the constructor.
showForest :: a -> Forest String Source
showForest generically shows a value while preserving its structure (in a Tree). Always returns either a singleton list containing the tree (a degenerate forest) or an empty list for baseTypes. An invariant is that the shape of the tree produced by showForest is the same as the one produced by subTypes.
Instances
Index into a Tree/Forest, where level is the depth from the root and column is the distance d is the dth value on the same level. Thus, all left-most nodes are in column 0. This is a "matrix view" of tree-structured data.
Keep or substitue a value in the tree.
Nominally, a list for value generalization indexes and existential generalization.