mirror of
https://github.com/github/semantic.git
synced 2024-12-23 14:54:16 +03:00
307 lines
16 KiB
Haskell
307 lines
16 KiB
Haskell
{-# LANGUAGE DataKinds #-}
|
|
module AlignmentSpec where
|
|
|
|
import Alignment
|
|
import Control.Arrow ((&&&))
|
|
import Control.Monad.State
|
|
import Data.Align hiding (align)
|
|
import Data.Bifunctor
|
|
import Data.Bifunctor.Join
|
|
import Data.Bifunctor.Join.Arbitrary ()
|
|
import Data.Functor.Both as Both
|
|
import Data.List (nub)
|
|
import Data.Monoid
|
|
import Data.Record
|
|
import Data.String
|
|
import Data.Text.Arbitrary ()
|
|
import Data.These
|
|
import Patch
|
|
import Prologue hiding (fst, snd)
|
|
import qualified Prologue
|
|
import Range
|
|
import qualified Source
|
|
import SplitDiff
|
|
import Syntax
|
|
import Term
|
|
import Test.Hspec
|
|
import Test.Hspec.QuickCheck
|
|
import Test.QuickCheck
|
|
|
|
spec :: Spec
|
|
spec = parallel $ do
|
|
describe "alignBranch" $ do
|
|
it "produces symmetrical context" $
|
|
alignBranch getRange ([] :: [Join These (SplitDiff String (Record '[Range]))]) (both [Range 0 2, Range 2 4] [Range 0 2, Range 2 4]) `shouldBe`
|
|
[ Join (These (Range 0 2, [])
|
|
(Range 0 2, []))
|
|
, Join (These (Range 2 4, [])
|
|
(Range 2 4, []))
|
|
]
|
|
|
|
it "produces asymmetrical context" $
|
|
alignBranch getRange ([] :: [Join These (SplitDiff String (Record '[Range]))]) (both [Range 0 2, Range 2 4] [Range 0 1]) `shouldBe`
|
|
[ Join (These (Range 0 2, [])
|
|
(Range 0 1, []))
|
|
, Join (This (Range 2 4, []))
|
|
]
|
|
|
|
prop "covers every input line" $
|
|
\ elements -> let (_, children, ranges) = toAlignBranchInputs elements in
|
|
join <$> (traverse (modifyJoin (fromThese [] []) . fmap (pure . Prologue.fst)) (alignBranch Prologue.snd children ranges)) `shouldBe` ranges
|
|
|
|
prop "covers every input child" $
|
|
\ elements -> let (_, children, ranges) = toAlignBranchInputs elements in
|
|
sort (nub (keysOfAlignedChildren (alignBranch Prologue.snd children ranges))) `shouldBe` sort (nub (catMaybes (branchElementKey <$> elements)))
|
|
|
|
prop "covers every line of every input child" $
|
|
\ elements -> let (_, children, ranges) = toAlignBranchInputs elements in
|
|
sort (keysOfAlignedChildren (alignBranch Prologue.snd children ranges)) `shouldBe` sort (do
|
|
line <- children
|
|
these (pure . Prologue.fst) (pure . Prologue.fst) (\ (k1, _) (k2, _) -> [ k1, k2 ]) . runJoin $ line)
|
|
|
|
describe "alignDiff" $ do
|
|
it "aligns identical branches on a single line" $
|
|
let sources = both (Source.fromList "[ foo ]") (Source.fromList "[ foo ]") in
|
|
align sources (pure (info 0 7) `branch` [ pure (info 2 5) `leaf` "foo" ]) `shouldBe` prettyDiff sources
|
|
[ Join (These (info 0 7 `branch` [ info 2 5 `leaf` "foo" ])
|
|
(info 0 7 `branch` [ info 2 5 `leaf` "foo" ])) ]
|
|
|
|
it "aligns identical branches spanning multiple lines" $
|
|
let sources = both (Source.fromList "[\nfoo\n]") (Source.fromList "[\nfoo\n]") in
|
|
align sources (pure (info 0 7) `branch` [ pure (info 2 5) `leaf` "foo" ]) `shouldBe` prettyDiff sources
|
|
[ Join (These (info 0 2 `branch` [])
|
|
(info 0 2 `branch` []))
|
|
, Join (These (info 2 6 `branch` [ info 2 5 `leaf` "foo" ])
|
|
(info 2 6 `branch` [ info 2 5 `leaf` "foo" ]))
|
|
, Join (These (info 6 7 `branch` [])
|
|
(info 6 7 `branch` []))
|
|
]
|
|
|
|
it "aligns reformatted branches" $
|
|
let sources = both (Source.fromList "[ foo ]") (Source.fromList "[\nfoo\n]") in
|
|
align sources (pure (info 0 7) `branch` [ pure (info 2 5) `leaf` "foo" ]) `shouldBe` prettyDiff sources
|
|
[ Join (That (info 0 2 `branch` []))
|
|
, Join (These (info 0 7 `branch` [ info 2 5 `leaf` "foo" ])
|
|
(info 2 6 `branch` [ info 2 5 `leaf` "foo" ]))
|
|
, Join (That (info 6 7 `branch` []))
|
|
]
|
|
|
|
it "aligns nodes following reformatted branches" $
|
|
let sources = both (Source.fromList "[ foo ]\nbar\n") (Source.fromList "[\nfoo\n]\nbar\n") in
|
|
align sources (pure (info 0 12) `branch` [ pure (info 0 7) `branch` [ pure (info 2 5) `leaf` "foo" ], pure (info 8 11) `leaf` "bar" ]) `shouldBe` prettyDiff sources
|
|
[ Join (That (info 0 2 `branch` [ info 0 2 `branch` [] ]))
|
|
, Join (These (info 0 8 `branch` [ info 0 7 `branch` [ info 2 5 `leaf` "foo" ] ])
|
|
(info 2 6 `branch` [ info 2 6 `branch` [ info 2 5 `leaf` "foo" ] ]))
|
|
, Join (That (info 6 8 `branch` [ info 6 7 `branch` [] ]))
|
|
, Join (These (info 8 12 `branch` [ info 8 11 `leaf` "bar" ])
|
|
(info 8 12 `branch` [ info 8 11 `leaf` "bar" ]))
|
|
, Join (These (info 12 12 `branch` [])
|
|
(info 12 12 `branch` []))
|
|
]
|
|
|
|
it "aligns identical branches with multiple children on the same line" $
|
|
let sources = pure (Source.fromList "[ foo, bar ]") in
|
|
align sources (pure (info 0 12) `branch` [ pure (info 2 5) `leaf` "foo", pure (info 7 10) `leaf` "bar" ]) `shouldBe` prettyDiff sources
|
|
[ Join (runBothWith These (pure (info 0 12 `branch` [ info 2 5 `leaf` "foo", info 7 10 `leaf` "bar" ])) ) ]
|
|
|
|
it "aligns insertions" $
|
|
let sources = both (Source.fromList "a") (Source.fromList "a\nb") in
|
|
align sources (both (info 0 1) (info 0 3) `branch` [ pure (info 0 1) `leaf` "a", insert (info 2 3 `leaf` "b") ]) `shouldBe` prettyDiff sources
|
|
[ Join (These (info 0 1 `branch` [ info 0 1 `leaf` "a" ])
|
|
(info 0 2 `branch` [ info 0 1 `leaf` "a" ]))
|
|
, Join (That (info 2 3 `branch` [ insert (info 2 3 `leaf` "b") ]))
|
|
]
|
|
|
|
it "aligns total insertions" $
|
|
let sources = both (Source.fromList "") (Source.fromList "a") in
|
|
align sources (insert (info 0 1 `leaf` "a")) `shouldBe` prettyDiff sources
|
|
[ Join (That (insert (info 0 1 `leaf` "a"))) ]
|
|
|
|
it "aligns insertions into empty branches" $
|
|
let sources = both (Source.fromList "[ ]") (Source.fromList "[a]") in
|
|
align sources (pure (info 0 3) `branch` [ insert (info 1 2 `leaf` "a") ]) `shouldBe` prettyDiff sources
|
|
[ Join (That (info 0 3 `branch` [ insert (info 1 2 `leaf` "a") ]))
|
|
, Join (This (info 0 3 `branch` []))
|
|
]
|
|
|
|
it "aligns symmetrically following insertions" $
|
|
let sources = both (Source.fromList "a\nc") (Source.fromList "a\nb\nc") in
|
|
align sources (both (info 0 3) (info 0 5) `branch` [ pure (info 0 1) `leaf` "a", insert (info 2 3 `leaf` "b"), both (info 2 3) (info 4 5) `leaf` "c" ])
|
|
`shouldBe` prettyDiff sources
|
|
[ Join (These (info 0 2 `branch` [ info 0 1 `leaf` "a" ])
|
|
(info 0 2 `branch` [ info 0 1 `leaf` "a" ]))
|
|
, Join (That (info 2 4 `branch` [ insert (info 2 3 `leaf` "b") ]))
|
|
, Join (These (info 2 3 `branch` [ info 2 3 `leaf` "c" ])
|
|
(info 4 5 `branch` [ info 4 5 `leaf` "c" ]))
|
|
]
|
|
|
|
it "symmetrical nodes force the alignment of asymmetrical nodes on both sides" $
|
|
let sources = both (Source.fromList "[ a, b ]") (Source.fromList "[ b, c ]") in
|
|
align sources (pure (info 0 8) `branch` [ delete (info 2 3 `leaf` "a"), both (info 5 6) (info 2 3) `leaf` "b", insert (info 5 6 `leaf` "c") ]) `shouldBe` prettyDiff sources
|
|
[ Join (These (info 0 8 `branch` [ delete (info 2 3 `leaf` "a"), info 5 6 `leaf` "b" ])
|
|
(info 0 8 `branch` [ info 2 3 `leaf` "b", insert (info 5 6 `leaf` "c") ])) ]
|
|
|
|
it "when one of two symmetrical nodes must be split, splits the latter" $
|
|
let sources = both (Source.fromList "[ a, b ]") (Source.fromList "[ a\n, b\n]") in
|
|
align sources (both (info 0 8) (info 0 9) `branch` [ pure (info 2 3) `leaf` "a", both (info 5 6) (info 6 7) `leaf` "b" ]) `shouldBe` prettyDiff sources
|
|
[ Join (These (info 0 8 `branch` [ info 2 3 `leaf` "a", info 5 6 `leaf` "b" ])
|
|
(info 0 4 `branch` [ info 2 3 `leaf` "a" ]))
|
|
, Join (That (info 4 8 `branch` [ info 6 7 `leaf` "b" ]))
|
|
, Join (That (info 8 9 `branch` []))
|
|
]
|
|
|
|
it "aligns deletions before insertions" $
|
|
let sources = both (Source.fromList "[ a ]") (Source.fromList "[ b ]") in
|
|
align sources (pure (info 0 5) `branch` [ delete (info 2 3 `leaf` "a"), insert (info 2 3 `leaf` "b") ]) `shouldBe` prettyDiff sources
|
|
[ Join (This (info 0 5 `branch` [ delete (info 2 3 `leaf` "a") ]))
|
|
, Join (That (info 0 5 `branch` [ insert (info 2 3 `leaf` "b") ]))
|
|
]
|
|
|
|
it "aligns context-only lines symmetrically" $
|
|
let sources = both (Source.fromList "[\n a\n,\n b\n]") (Source.fromList "[\n a, b\n\n\n]") in
|
|
align sources (both (info 0 13) (info 0 12) `branch` [ pure (info 4 5) `leaf` "a", both (info 10 11) (info 7 8) `leaf` "b" ]) `shouldBe` prettyDiff sources
|
|
[ Join (These (info 0 2 `branch` [])
|
|
(info 0 2 `branch` []))
|
|
, Join (These (info 2 6 `branch` [ info 4 5 `leaf` "a" ])
|
|
(info 2 9 `branch` [ info 4 5 `leaf` "a", info 7 8 `leaf` "b" ]))
|
|
, Join (These (info 6 8 `branch` [])
|
|
(info 9 10 `branch` []))
|
|
, Join (This (info 8 12 `branch` [ info 10 11 `leaf` "b" ]))
|
|
, Join (These (info 12 13 `branch` [])
|
|
(info 10 11 `branch` []))
|
|
, Join (That (info 11 12 `branch` []))
|
|
]
|
|
|
|
it "aligns asymmetrical nodes preceding their symmetrical siblings conservatively" $
|
|
let sources = both (Source.fromList "[ b, c ]") (Source.fromList "[ a\n, c\n]") in
|
|
align sources (both (info 0 8) (info 0 9) `branch` [ insert (info 2 3 `leaf` "a"), delete (info 2 3 `leaf` "b"), both (info 5 6) (info 6 7) `leaf` "c" ]) `shouldBe` prettyDiff sources
|
|
[ Join (That (info 0 4 `branch` [ insert (info 2 3 `leaf` "a") ]))
|
|
, Join (These (info 0 8 `branch` [ delete (info 2 3 `leaf` "b"), info 5 6 `leaf` "c" ])
|
|
(info 4 8 `branch` [ info 6 7 `leaf` "c" ]))
|
|
, Join (That (info 8 9 `branch` []))
|
|
]
|
|
|
|
it "aligns symmetrical reformatted nodes" $
|
|
let sources = both (Source.fromList "a [ b ]\nc") (Source.fromList "a [\nb\n]\nc") in
|
|
align sources (pure (info 0 9) `branch` [ pure (info 0 1) `leaf` "a", pure (info 2 7) `branch` [ pure (info 4 5) `leaf` "b" ], pure (info 8 9) `leaf` "c" ]) `shouldBe` prettyDiff sources
|
|
[ Join (These (info 0 8 `branch` [ info 0 1 `leaf` "a", info 2 7 `branch` [ info 4 5 `leaf` "b" ] ])
|
|
(info 0 4 `branch` [ info 0 1 `leaf` "a", info 2 4 `branch` [] ]))
|
|
, Join (That (info 4 6 `branch` [ info 4 6 `branch` [ info 4 5 `leaf` "b" ] ]))
|
|
, Join (That (info 6 8 `branch` [ info 6 7 `branch` [] ]))
|
|
, Join (These (info 8 9 `branch` [ info 8 9 `leaf` "c" ])
|
|
(info 8 9 `branch` [ info 8 9 `leaf` "c" ]))
|
|
]
|
|
|
|
describe "numberedRows" $ do
|
|
prop "counts only non-empty values" $
|
|
\ xs -> counts (numberedRows (xs :: [Join These Char])) `shouldBe` length . catMaybes <$> Join (unalign (runJoin <$> xs))
|
|
|
|
data BranchElement
|
|
= Child String (Join These String)
|
|
| Margin (Join These String)
|
|
deriving Show
|
|
|
|
branchElementKey :: BranchElement -> Maybe String
|
|
branchElementKey (Child key _) = Just key
|
|
branchElementKey _ = Nothing
|
|
|
|
toAlignBranchInputs :: [BranchElement] -> (Both (Source.Source Char), [Join These (String, Range)], Both [Range])
|
|
toAlignBranchInputs elements = (sources, join . (`evalState` both 0 0) . traverse go $ elements, ranges)
|
|
where go :: BranchElement -> State (Both Int) [Join These (String, Range)]
|
|
go child@(Child key _) = do
|
|
lines <- traverse (\ (Child _ contents) -> do
|
|
prev <- get
|
|
let next = (+) <$> prev <*> modifyJoin (fromThese 0 0) (length <$> contents)
|
|
put next
|
|
pure $! modifyJoin (runBothWith bimap (const <$> (Range <$> prev <*> next))) contents) (alignBranchElement child)
|
|
pure $! fmap ((,) key) <$> lines
|
|
go (Margin contents) = do
|
|
prev <- get
|
|
put $ (+) <$> prev <*> modifyJoin (fromThese 0 0) (length <$> contents)
|
|
pure []
|
|
alignBranchElement element = case element of
|
|
Child key contents -> Child key <$> crosswalk lines contents
|
|
Margin contents -> Margin <$> crosswalk lines contents
|
|
where lines = fmap toList . Source.actualLines . Source.fromList
|
|
sources = foldMap Source.fromList <$> bothContents elements
|
|
ranges = fmap (filter (\ (Range start end) -> start /= end)) $ Source.actualLineRanges <$> (totalRange <$> sources) <*> sources
|
|
bothContents = foldMap (modifyJoin (fromThese [] []) . fmap (:[]) . branchElementContents)
|
|
branchElementContents (Child _ contents) = contents
|
|
branchElementContents (Margin contents) = contents
|
|
|
|
keysOfAlignedChildren :: [Join These (Range, [(String, Range)])] -> [String]
|
|
keysOfAlignedChildren lines = lines >>= these identity identity (++) . runJoin . fmap (fmap Prologue.fst . Prologue.snd)
|
|
|
|
instance Arbitrary BranchElement where
|
|
arbitrary = oneof [ key >>= \ key -> Child key <$> joinTheseOf (contents key)
|
|
, Margin <$> joinTheseOf margin ]
|
|
where key = listOf1 (elements (['a'..'z'] <> ['A'..'Z'] <> ['0'..'9']))
|
|
contents key = wrap key <$> listOf (padding '*')
|
|
wrap key contents = "(" <> key <> contents <> ")" :: String
|
|
margin = listOf (padding '-')
|
|
padding char = frequency [ (10, pure char)
|
|
, (1, pure '\n') ]
|
|
joinTheseOf g = oneof [ Join . This <$> g
|
|
, Join . That <$> g
|
|
, (Join .) . These <$> g <*> g ]
|
|
|
|
shrink (Child key contents) = Child key <$> crosswalk shrinkContents contents
|
|
where shrinkContents string = (++ suffix) . (prefix ++) <$> shrinkList (const []) (drop (length prefix) (take (length string - length suffix) string))
|
|
(prefix, suffix) = ('(' : key, ")" :: String)
|
|
shrink (Margin contents) = Margin <$> crosswalk (shrinkList (const [])) contents
|
|
|
|
counts :: [Join These (Int, a)] -> Both Int
|
|
counts numbered = fromMaybe 0 . getLast . mconcat . fmap Last <$> Join (unalign (runJoin . fmap Prologue.fst <$> numbered))
|
|
|
|
align :: Both (Source.Source Char) -> ConstructibleFree (Patch (Term String (Record '[Range]))) (Both (Record '[Range])) -> PrettyDiff (SplitDiff String (Record '[Range]))
|
|
align sources = PrettyDiff sources . fmap (fmap (getRange &&& identity)) . alignDiff sources . deconstruct
|
|
|
|
info :: Int -> Int -> Record '[Range]
|
|
info start end = Range start end .: RNil
|
|
|
|
prettyDiff :: Both (Source.Source Char) -> [Join These (ConstructibleFree (SplitPatch (Term String (Record '[Range]))) (Record '[Range]))] -> PrettyDiff (SplitDiff String (Record '[Range]))
|
|
prettyDiff sources = PrettyDiff sources . fmap (fmap ((getRange &&& identity) . deconstruct))
|
|
|
|
data PrettyDiff a = PrettyDiff { unPrettySources :: Both (Source.Source Char), unPrettyLines :: [Join These (Range, a)] }
|
|
deriving Eq
|
|
|
|
instance Show a => Show (PrettyDiff a) where
|
|
showsPrec _ (PrettyDiff sources lines) = (prettyPrinted ++) -- . (("\n" ++ show lines) ++)
|
|
where prettyPrinted = showLine (maximum (0 : (maximum . fmap length <$> shownLines))) <$> shownLines >>= ('\n':)
|
|
shownLines = catMaybes $ toBoth <$> lines
|
|
showLine n line = uncurry ((++) . (++ " | ")) (fromThese (replicate n ' ') (replicate n ' ') (runJoin (pad n <$> line)))
|
|
showDiff (range, _) = filter (/= '\n') . toList . Source.slice range
|
|
pad n string = (++) (take n string) (replicate (max 0 (n - length string)) ' ')
|
|
toBoth them = showDiff <$> them `applyThese` modifyJoin (uncurry These) sources
|
|
|
|
newtype ConstructibleFree patch annotation = ConstructibleFree { deconstruct :: Free (CofreeF (Syntax String) annotation) patch }
|
|
|
|
|
|
class PatchConstructible p where
|
|
insert :: Term String (Record '[Range]) -> p
|
|
delete :: Term String (Record '[Range]) -> p
|
|
|
|
instance PatchConstructible (Patch (Term String (Record '[Range]))) where
|
|
insert = Insert
|
|
delete = Delete
|
|
|
|
instance PatchConstructible (SplitPatch (Term String (Record '[Range]))) where
|
|
insert = SplitInsert
|
|
delete = SplitDelete
|
|
|
|
instance PatchConstructible patch => PatchConstructible (ConstructibleFree patch annotation) where
|
|
insert = ConstructibleFree . pure . insert
|
|
delete = ConstructibleFree . pure . delete
|
|
|
|
class SyntaxConstructible s where
|
|
leaf :: annotation -> String -> s annotation
|
|
branch :: annotation -> [s annotation] -> s annotation
|
|
|
|
instance SyntaxConstructible (ConstructibleFree patch) where
|
|
leaf info = ConstructibleFree . free . Free . (info :<) . Leaf
|
|
branch info = ConstructibleFree . free . Free . (info :<) . Indexed . fmap deconstruct
|
|
|
|
instance SyntaxConstructible (Cofree (Syntax String)) where
|
|
info `leaf` value = cofree $ info :< Leaf value
|
|
info `branch` children = cofree $ info :< Indexed children
|