Merge pull request #1 from haskell/ghc-head

Ghc head

8 files changed, 282 insertions, 0 deletions

diff --git a/hypsrc-test/src/Classes.hs b/hypsrc-test/src/Classes.hs
new file mode 100644
index 00000000..b3c3f785
--- /dev/null
+++ b/hypsrc-test/src/Classes.hs
@@ -0,0 +1,38 @@
+module Classes where
+
+
+class Foo a where
+    bar :: a -> Int
+    baz :: Int -> (a, a)
+
+instance Foo Int where
+    bar = id
+    baz x = (x, x)
+
+instance Foo [a] where
+    bar = length
+    baz _ = ([], [])
+
+
+class Foo a => Foo' a where
+    quux :: (a, a) -> a
+    quux (x, y) = norf [x, y]
+
+    norf :: [a] -> a
+    norf = quux . baz . sum . map bar
+
+instance Foo' Int where
+    norf = sum
+
+instance Foo' [a] where
+    quux = uncurry (++)
+
+
+class Plugh p where
+    plugh :: p a a -> p b b -> p (a -> b) (b -> a)
+
+instance Plugh Either where
+    plugh (Left a) _ = Right $ const a
+    plugh (Right a) _ = Right $ const a
+    plugh _ (Left b) = Left $ const b
+    plugh _ (Right b) = Left $ const b
diff --git a/hypsrc-test/src/Constructors.hs b/hypsrc-test/src/Constructors.hs
new file mode 100644
index 00000000..8cb46535
--- /dev/null
+++ b/hypsrc-test/src/Constructors.hs
@@ -0,0 +1,35 @@
+module Constructors where
+
+
+data Foo
+    = Bar
+    | Baz
+    | Quux Foo Int
+
+newtype Norf = Norf (Foo, [Foo], Foo)
+
+
+bar, baz, quux :: Foo
+bar = Bar
+baz = Baz
+quux = Quux quux 0
+
+
+unfoo :: Foo -> Int
+unfoo Bar = 0
+unfoo Baz = 0
+unfoo (Quux foo n) = 42 * n + unfoo foo
+
+
+unnorf :: Norf -> [Foo]
+unnorf (Norf (Bar, xs, Bar)) = xs
+unnorf (Norf (Baz, xs, Baz)) = reverse xs
+unnorf _ = undefined
+
+
+unnorf' :: Norf -> Int
+unnorf' x@(Norf (f1@(Quux _ n), _, f2@(Quux f3 _))) =
+    x' + n * unfoo f1 + aux f3
+  where
+    aux fx = unfoo f2 * unfoo fx * unfoo f3
+    x' = sum . map unfoo . unnorf $ x
diff --git a/hypsrc-test/src/Identifiers.hs b/hypsrc-test/src/Identifiers.hs
new file mode 100644
index 00000000..173c3ba7
--- /dev/null
+++ b/hypsrc-test/src/Identifiers.hs
@@ -0,0 +1,28 @@
+module Identifiers where
+
+
+foo, bar, baz :: Int -> Int -> Int
+foo x y = x + x * bar y x * y + y
+bar x y = y + x - baz x y - x + y
+baz x y = x * y * y * y * x
+
+quux :: Int -> Int
+quux x = foo (bar x x) (bar x x)
+
+norf :: Int -> Int -> Int -> Int
+norf x y z
+    | x < 0 = quux x
+    | y < 0 = quux y
+    | z < 0 = quux z
+    | otherwise = norf (-x) (-y) (-z)
+
+
+main :: IO ()
+main = do
+    putStrLn . show $ foo x y
+    putStrLn . show $ quux z
+    putStrLn . show $ Identifiers.norf x y z
+  where
+    x = 10
+    y = 20
+    z = 30
diff --git a/hypsrc-test/src/Literals.hs b/hypsrc-test/src/Literals.hs
new file mode 100644
index 00000000..997b6615
--- /dev/null
+++ b/hypsrc-test/src/Literals.hs
@@ -0,0 +1,17 @@
+module Literals where
+
+
+str :: String
+str = "str literal"
+
+num :: Num a => a
+num = 0 + 1 + 1010011 * 41231 + 12131
+
+frac :: Fractional a => a
+frac = 42.0000001
+
+list :: [[[[a]]]]
+list = [[], [[]], [[[]]]]
+
+pair :: ((), ((), (), ()), ())
+pair = ((), ((), (), ()), ())
diff --git a/hypsrc-test/src/Operators.hs b/hypsrc-test/src/Operators.hs
new file mode 100644
index 00000000..8e86ab0b
--- /dev/null
+++ b/hypsrc-test/src/Operators.hs
@@ -0,0 +1,22 @@
+module Operators where
+
+
+(+++) :: [a] -> [a] -> [a]
+a +++ b = a ++ b ++ a
+
+($$$) :: [a] -> [a] -> [a]
+a $$$ b = b +++ a
+
+(***) :: [a] -> [a] -> [a]
+(***) a [] = a
+(***) a (_:b) = a +++ (a *** b)
+
+(*/\*) :: [[a]] -> [a] -> [a]
+a */\* b = concatMap (*** b) a
+
+(**/\**) :: [[a]] -> [[a]] -> [[a]]
+a **/\** b = zipWith (*/\*) [a +++ b] (a $$$ b)
+
+
+(#.#) :: a -> b -> (c -> (a, b))
+a #.# b = const $ (a, b)
diff --git a/hypsrc-test/src/Polymorphism.hs b/hypsrc-test/src/Polymorphism.hs
new file mode 100644
index 00000000..a74ac492
--- /dev/null
+++ b/hypsrc-test/src/Polymorphism.hs
@@ -0,0 +1,66 @@
+{-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+
+
+module Polymorphism where
+
+
+foo :: a -> a -> a
+foo = undefined
+
+foo' :: forall a. a -> a -> a
+foo' = undefined
+
+bar :: a -> b -> (a, b)
+bar = undefined
+
+bar' :: forall a b. a -> b -> (a, b)
+bar' = undefined
+
+baz :: a -> (a -> [a -> a] -> b) -> b
+baz = undefined
+
+baz' :: forall a b. a -> (a -> [a -> a] -> b) -> b
+baz' = undefined
+
+quux :: a -> (forall a. a -> a) -> a
+quux = undefined
+
+quux' :: forall a. a -> (forall a. a -> a) -> a
+quux' = undefined
+
+
+num :: Num a => a -> a -> a
+num = undefined
+
+num' :: forall a. Num a => a -> a -> a
+num' = undefined
+
+eq :: (Eq a, Eq b) => [a] -> [b] -> (a, b)
+eq = undefined
+
+eq' :: forall a b. (Eq a, Eq b) => [a] -> [b] -> (a, b)
+eq' = undefined
+
+mon :: Monad m => (a -> m a) -> m a
+mon = undefined
+
+mon' :: forall m a. Monad m => (a -> m a) -> m a
+mon' = undefined
+
+
+norf :: a -> (forall a. Ord a => a -> a) -> a
+norf = undefined
+
+norf' :: forall a. a -> (forall a. Ord a => a -> a) -> a
+norf' = undefined
+
+
+plugh :: forall a. a -> a
+plugh x = x :: a
+
+thud :: forall a b. (a -> b) -> a -> (a, b)
+thud f x =
+    (x :: a, y) :: (a, b)
+  where
+    y = (f :: a -> b) x :: b
diff --git a/hypsrc-test/src/Records.hs b/hypsrc-test/src/Records.hs
new file mode 100644
index 00000000..40a01121
--- /dev/null
+++ b/hypsrc-test/src/Records.hs
@@ -0,0 +1,34 @@
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE RecordWildCards #-}
+
+
+module Records where
+
+
+data Point = Point
+    { x :: !Int
+    , y :: !Int
+    }
+
+
+point :: Int -> Int -> Point
+point x y = Point { x = x, y = y }
+
+
+lengthSqr :: Point -> Int
+lengthSqr (Point { x = x, y = y }) = x * x + y * y
+
+lengthSqr' :: Point -> Int
+lengthSqr' (Point { x, y }) = y * y + x * x
+
+
+translateX, translateY :: Point -> Int -> Point
+translateX p d = p { x = x p + d }
+translateY p d = p { y = y p + d }
+
+translate :: Int -> Int -> Point -> Point
+translate x y p =
+    aux p
+  where
+    (dx, dy) = (x, y)
+    aux Point{..} = p { x = x + dx, y = y + dy }
diff --git a/hypsrc-test/src/Types.hs b/hypsrc-test/src/Types.hs
new file mode 100644
index 00000000..b63a825b
--- /dev/null
+++ b/hypsrc-test/src/Types.hs
@@ -0,0 +1,42 @@
+{-# LANGUAGE TypeFamilies #-}
+
+
+module Types where
+
+
+data Quux = Bar | Baz
+
+newtype Foo = Foo ()
+
+type FooQuux = (Foo, Quux)
+type QuuxFoo = (Quux, Foo)
+
+
+data family Norf a b
+
+data instance Norf Foo Quux = NFQ Foo Quux
+data instance Norf Quux Foo = NQF Quux Foo
+
+
+type family Norf' a b
+
+type instance Norf' Foo Quux = (Foo, Quux)
+type instance Norf' Quux Foo = (Quux, Foo)
+
+
+norf1 :: Norf Foo Quux -> Int
+norf1 (NFQ (Foo ()) Bar) = 0
+norf1 (NFQ (Foo ()) Baz) = 1
+
+norf2 :: Norf Quux Foo -> Int
+norf2 (NQF Bar (Foo ())) = 0
+norf2 (NQF Baz (Foo ())) = 1
+
+
+norf1' :: Norf' Foo Quux -> Int
+norf1' (Foo (), Bar) = 0
+norf1' (Foo (), Baz) = 1
+
+norf2' :: Norf' Quux Foo -> Int
+norf2' (Bar, Foo ()) = 0
+norf2' (Baz, Foo ()) = 1