mirror of
https://github.com/github/semantic.git
synced 2024-12-24 07:25:44 +03:00
Represent ArbitraryDiff as a datatype.
This commit is contained in:
parent
5b70ff7635
commit
0770a410d4
@ -13,21 +13,24 @@ import Prologue
|
||||
import Term.Arbitrary
|
||||
import Test.QuickCheck hiding (Fixed)
|
||||
|
||||
newtype ArbitraryDiff leaf annotation = ArbitraryDiff (FreeF (CofreeF (Syntax leaf) (Join (,) annotation)) (Patch (ArbitraryTerm leaf annotation)) (ArbitraryDiff leaf annotation))
|
||||
data ArbitraryDiff leaf annotation
|
||||
= ArbitraryFree (Join (,) annotation) (Syntax leaf (ArbitraryDiff leaf annotation))
|
||||
| ArbitraryPure (Patch (ArbitraryTerm leaf annotation))
|
||||
deriving (Show, Eq, Generic)
|
||||
|
||||
unArbitraryDiff :: ArbitraryDiff leaf annotation -> FreeF (CofreeF (Syntax leaf) (Join (,) annotation)) (Patch (ArbitraryTerm leaf annotation)) (ArbitraryDiff leaf annotation)
|
||||
unArbitraryDiff (ArbitraryDiff a) = a
|
||||
unArbitraryDiff (ArbitraryFree a s) = Free (a :< s)
|
||||
unArbitraryDiff (ArbitraryPure p) = Pure p
|
||||
|
||||
toDiff :: ArbitraryDiff leaf annotation -> Diff leaf annotation
|
||||
toDiff = fmap (fmap toTerm) . unfold unArbitraryDiff
|
||||
|
||||
diffOfSize :: (Arbitrary leaf, Arbitrary annotation) => Int -> Gen (ArbitraryDiff leaf annotation)
|
||||
diffOfSize n
|
||||
| n <= 0 = (ArbitraryDiff .) . (Free .) . (:<) <$> arbitrary <*> syntaxOfSize diffOfSize n
|
||||
| n <= 0 = ArbitraryFree <$> arbitrary <*> syntaxOfSize diffOfSize n
|
||||
| otherwise = oneof
|
||||
[ (ArbitraryDiff .) . (Free .) . (:<) <$> arbitrary <*> syntaxOfSize diffOfSize n
|
||||
, ArbitraryDiff . Pure <$> patchOfSize n ]
|
||||
[ ArbitraryFree <$> arbitrary <*> syntaxOfSize diffOfSize n
|
||||
, ArbitraryPure <$> patchOfSize n ]
|
||||
where patchOfSize 1 = oneof [ Insert <$> termOfSize 1
|
||||
, Delete <$> termOfSize 1 ]
|
||||
patchOfSize n = do
|
||||
|
Loading…
Reference in New Issue
Block a user