mirror of
https://github.com/github/semantic.git
synced 2024-12-26 00:12:29 +03:00
ArbitraryTerm wraps CofreeF.
This commit is contained in:
parent
64ac3703c0
commit
37f960b6d1
@ -20,16 +20,16 @@ import Syntax
|
|||||||
import Term
|
import Term
|
||||||
import Test.QuickCheck hiding (Fixed)
|
import Test.QuickCheck hiding (Fixed)
|
||||||
|
|
||||||
newtype ArbitraryTerm a annotation = ArbitraryTerm (annotation, Syntax a (ArbitraryTerm a annotation))
|
newtype ArbitraryTerm a annotation = ArbitraryTerm (CofreeF (Syntax a) annotation (ArbitraryTerm a annotation))
|
||||||
deriving (Show, Eq, Generic)
|
deriving (Show, Eq, Generic)
|
||||||
|
|
||||||
unTerm :: ArbitraryTerm a annotation -> Term a annotation
|
unTerm :: ArbitraryTerm a annotation -> Term a annotation
|
||||||
unTerm = unfold unpack
|
unTerm = unfold unpack
|
||||||
where unpack (ArbitraryTerm (annotation, syntax)) = annotation :< syntax
|
where unpack (ArbitraryTerm (annotation :< syntax)) = annotation :< syntax
|
||||||
|
|
||||||
instance (Eq a, Eq annotation, Arbitrary a, Arbitrary annotation) => Arbitrary (ArbitraryTerm a annotation) where
|
instance (Eq a, Eq annotation, Arbitrary a, Arbitrary annotation) => Arbitrary (ArbitraryTerm a annotation) where
|
||||||
arbitrary = scale (`div` 2) $ sized (\ x -> boundedTerm x x) -- first indicates the cube of the max length of lists, second indicates the cube of the max depth of the tree
|
arbitrary = scale (`div` 2) $ sized (\ x -> boundedTerm x x) -- first indicates the cube of the max length of lists, second indicates the cube of the max depth of the tree
|
||||||
where boundedTerm maxLength maxDepth = ArbitraryTerm <$> ((,) <$> arbitrary <*> boundedSyntax maxLength maxDepth)
|
where boundedTerm maxLength maxDepth = ArbitraryTerm <$> ((:<) <$> arbitrary <*> boundedSyntax maxLength maxDepth)
|
||||||
boundedSyntax _ maxDepth | maxDepth <= 0 = Leaf <$> arbitrary
|
boundedSyntax _ maxDepth | maxDepth <= 0 = Leaf <$> arbitrary
|
||||||
boundedSyntax maxLength maxDepth = frequency
|
boundedSyntax maxLength maxDepth = frequency
|
||||||
[ (12, Leaf <$> arbitrary),
|
[ (12, Leaf <$> arbitrary),
|
||||||
@ -37,8 +37,8 @@ instance (Eq a, Eq annotation, Arbitrary a, Arbitrary annotation) => Arbitrary (
|
|||||||
(1, Fixed . take maxLength <$> listOf (smallerTerm maxLength maxDepth)),
|
(1, Fixed . take maxLength <$> listOf (smallerTerm maxLength maxDepth)),
|
||||||
(1, Keyed . Map.fromList . take maxLength <$> listOf (arbitrary >>= (\x -> (,) x <$> smallerTerm maxLength maxDepth))) ]
|
(1, Keyed . Map.fromList . take maxLength <$> listOf (arbitrary >>= (\x -> (,) x <$> smallerTerm maxLength maxDepth))) ]
|
||||||
smallerTerm maxLength maxDepth = boundedTerm (div maxLength 3) (div maxDepth 3)
|
smallerTerm maxLength maxDepth = boundedTerm (div maxLength 3) (div maxDepth 3)
|
||||||
shrink term@(ArbitraryTerm (annotation, syntax)) = (subterms term ++) $ filter (/= term) $
|
shrink term@(ArbitraryTerm (annotation :< syntax)) = (subterms term ++) $ filter (/= term) $
|
||||||
ArbitraryTerm <$> ((,) <$> shrink annotation <*> case syntax of
|
ArbitraryTerm <$> ((:<) <$> shrink annotation <*> case syntax of
|
||||||
Leaf a -> Leaf <$> shrink a
|
Leaf a -> Leaf <$> shrink a
|
||||||
Indexed i -> Indexed <$> (List.subsequences i >>= recursivelyShrink)
|
Indexed i -> Indexed <$> (List.subsequences i >>= recursivelyShrink)
|
||||||
Fixed f -> Fixed <$> (List.subsequences f >>= recursivelyShrink)
|
Fixed f -> Fixed <$> (List.subsequences f >>= recursivelyShrink)
|
||||||
|
Loading…
Reference in New Issue
Block a user