diff --git a/CHANGELOG.md b/CHANGELOG.md new file mode 100644 --- /dev/null +++ b/CHANGELOG.md @@ -0,0 +1,4 @@ +# Version 0.7 + +* This library exports the `Codec.Serialise.Serialise` instances previously + exported from `exinst-0.6`. diff --git a/LICENSE.txt b/LICENSE.txt new file mode 100644 --- /dev/null +++ b/LICENSE.txt @@ -0,0 +1,30 @@ +Copyright (c) 2015-2018, Renzo Carbonara + +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + * Redistributions in binary form must reproduce the above + copyright notice, this list of conditions and the following + disclaimer in the documentation and/or other materials provided + with the distribution. + + * Neither the name of Renzo Carbonara nor the names of other + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/README.md b/README.md new file mode 100644 --- /dev/null +++ b/README.md @@ -0,0 +1,4 @@ +# exinst-serialise + +See the [BSD3 LICENSE](https://github.com/k0001/exinst/blob/master/exinst/exinst-serialise/LICENSE.txt) +file to learn about the legal terms and conditions for this library. diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,2 @@ +import Distribution.Simple +main = defaultMain diff --git a/exinst-serialise.cabal b/exinst-serialise.cabal new file mode 100644 --- /dev/null +++ b/exinst-serialise.cabal @@ -0,0 +1,45 @@ +name: exinst-serialise +version: 0.7 +author: Renzo Carbonara +maintainer: renĪ»ren!zone +copyright: Renzo Carbonara 2015-2018 +license: BSD3 +license-file: LICENSE.txt +extra-source-files: README.md CHANGELOG.md +category: Data +build-type: Simple +cabal-version: >=1.18 +synopsis: Dependent pairs and their instances. +homepage: https://github.com/k0001/exinst +bug-reports: https://github.com/k0001/exinst/issues + + +library + hs-source-dirs: lib + default-language: Haskell2010 + exposed-modules: Exinst.Serialise + build-depends: + base >=4.9 && <5.0 + , serialise + , constraints + , exinst >=0.7 + , singletons + ghcjs-options: -Wall -O3 + ghc-options: -Wall -O2 + +test-suite tests + default-language: Haskell2010 + type: exitcode-stdio-1.0 + hs-source-dirs: tests + main-is: Main.hs + build-depends: + base + , binary + , exinst + , exinst-serialise + , QuickCheck + , serialise + , tasty + , tasty-quickcheck + ghcjs-options: -Wall -O0 + ghc-options: -Wall -O0 diff --git a/lib/Exinst/Serialise.hs b/lib/Exinst/Serialise.hs new file mode 100644 --- /dev/null +++ b/lib/Exinst/Serialise.hs @@ -0,0 +1,141 @@ +{-# LANGUAGE DataKinds #-} +{-# LANGUAGE PolyKinds #-} +{-# LANGUAGE ScopedTypeVariables #-} +{-# LANGUAGE TypeInType #-} +{-# LANGUAGE UndecidableInstances #-} + +{-# OPTIONS_GHC -fno-warn-orphans #-} + +-- | This module exports 'Serialise' instances (which provide +-- binary serialisation via the CBOR format) for 'Some1', +-- 'Some2', 'Some3' and 'Some4' from "Exinst", provided situable +-- 'Dict1', 'Dict2', 'Dict3' and 'Dict4' instances are available. +-- +-- See the README file in the @exinst@ package for more general documentation: +-- https://hackage.haskell.org/package/exinst#readme +module Exinst.Serialise () where + +import Codec.Serialise +import Codec.Serialise.Decoding (decodeListLenOf) +import Data.Constraint +import Data.Kind (Type) +import Data.Singletons +import Prelude + +import Exinst + +-------------------------------------------------------------------------------- + +instance forall (f :: k1 -> Type) + . ( SingKind k1 + , Serialise (Demote k1) + , Dict1 Serialise f + ) => Serialise (Some1 f) + where + {-# INLINABLE encode #-} + encode = \some1x -> withSome1Sing some1x $ \sa1 (x :: f a1) -> + case dict1 sa1 :: Dict (Serialise (f a1)) of + Dict -> encode (fromSing sa1, x) + {-# INLINABLE decode #-} + decode = do + decodeListLenOf 2 + rsa1 <- decode + withSomeSing rsa1 $ \(sa1 :: Sing (a1 :: k1)) -> + case dict1 sa1 :: Dict (Serialise (f a1)) of + Dict -> do + x :: f a1 <- decode + pure (Some1 sa1 x) + +instance forall (f :: k2 -> k1 -> Type) + . ( SingKind k2 + , SingKind k1 + , Serialise (Demote k2) + , Serialise (Demote k1) + , Dict2 Serialise f + ) => Serialise (Some2 f) + where + {-# INLINABLE encode #-} + encode = \some2x -> withSome2Sing some2x $ \sa2 sa1 (x :: f a2 a1) -> + case dict2 sa2 sa1 :: Dict (Serialise (f a2 a1)) of + Dict -> encode (fromSing sa2, fromSing sa1, x) + + + {-# INLINABLE decode #-} + decode = do + decodeListLenOf 3 + rsa2 <- decode; rsa1 <- decode + withSomeSing rsa2 $ \(sa2 :: Sing (a2 :: k2)) -> + withSomeSing rsa1 $ \(sa1 :: Sing (a1 :: k1)) -> + case dict2 sa2 sa1 :: Dict (Serialise (f a2 a1)) of + Dict -> do + x :: f a2 a1 <- decode + pure (Some2 sa2 sa1 x) + +instance forall (f :: k3 -> k2 -> k1 -> Type) + . ( SingKind k3 + , SingKind k2 + , SingKind k1 + , Serialise (Demote k3) + , Serialise (Demote k2) + , Serialise (Demote k1) + , Dict3 Serialise f + ) => Serialise (Some3 f) + where + {-# INLINABLE encode #-} + encode = \some3x -> withSome3Sing some3x $ \sa3 sa2 sa1 (x :: f a3 a2 a1) -> + case dict3 sa3 sa2 sa1 :: Dict (Serialise (f a3 a2 a1)) of + Dict -> encode (fromSing sa3, fromSing sa2, fromSing sa1, x) + {-# INLINABLE decode #-} + decode = do + decodeListLenOf 4 + rsa3 <- decode; rsa2 <- decode; rsa1 <- decode + withSomeSing rsa3 $ \(sa3 :: Sing (a3 :: k3)) -> + withSomeSing rsa2 $ \(sa2 :: Sing (a2 :: k2)) -> + withSomeSing rsa1 $ \(sa1 :: Sing (a1 :: k1)) -> + case dict3 sa3 sa2 sa1 :: Dict (Serialise (f a3 a2 a1)) of + Dict -> do + x :: f a3 a2 a1 <- decode + pure (Some3 sa3 sa2 sa1 x) + +instance forall (f :: k4 -> k3 -> k2 -> k1 -> Type) + . ( SingKind k4 + , SingKind k3 + , SingKind k2 + , SingKind k1 + , Serialise (Demote k4) + , Serialise (Demote k3) + , Serialise (Demote k2) + , Serialise (Demote k1) + , Dict4 Serialise f + ) => Serialise (Some4 f) + where + {-# INLINABLE encode #-} + encode = \some4x -> withSome4Sing some4x $ \sa4 sa3 sa2 sa1 (x :: f a4 a3 a2 a1) -> + case dict4 sa4 sa3 sa2 sa1 :: Dict (Serialise (f a4 a3 a2 a1)) of + Dict -> encode (fromSing sa4, fromSing sa3, fromSing sa2, fromSing sa1, x) + {-# INLINABLE decode #-} + decode = do + decodeListLenOf 5 + rsa4 <- decode; rsa3 <- decode; rsa2 <- decode; rsa1 <- decode; + withSomeSing rsa4 $ \(sa4 :: Sing (a4 :: k4)) -> + withSomeSing rsa3 $ \(sa3 :: Sing (a3 :: k3)) -> + withSomeSing rsa2 $ \(sa2 :: Sing (a2 :: k2)) -> + withSomeSing rsa1 $ \(sa1 :: Sing (a1 :: k1)) -> + case dict4 sa4 sa3 sa2 sa1 :: Dict (Serialise (f a4 a3 a2 a1)) of + Dict -> do + x :: f a4 a3 a2 a1 <- decode + pure (Some4 sa4 sa3 sa2 sa1 x) + +-------------------------------------------------------------------------------- + +instance (Serialise (l a1), Serialise (r a1)) => Serialise (S1 l r a1) +instance (Serialise (l a2 a1), Serialise (r a2 a1)) => Serialise (S2 l r a2 a1) +instance (Serialise (l a3 a2 a1), Serialise (r a3 a2 a1)) => Serialise (S3 l r a3 a2 a1) +instance (Serialise (l a4 a3 a2 a1), Serialise (r a4 a3 a2 a1)) => Serialise (S4 l r a4 a3 a2 a1) + +-------------------------------------------------------------------------------- + +instance (Serialise (l a1), Serialise (r a1)) => Serialise (P1 l r a1) +instance (Serialise (l a2 a1), Serialise (r a2 a1)) => Serialise (P2 l r a2 a1) +instance (Serialise (l a3 a2 a1), Serialise (r a3 a2 a1)) => Serialise (P3 l r a3 a2 a1) +instance (Serialise (l a4 a3 a2 a1), Serialise (r a4 a3 a2 a1)) => Serialise (P4 l r a4 a3 a2 a1) diff --git a/tests/Main.hs b/tests/Main.hs new file mode 100644 --- /dev/null +++ b/tests/Main.hs @@ -0,0 +1,190 @@ +{-# LANGUAGE CPP #-} +{-# LANGUAGE ConstraintKinds #-} +{-# LANGUAGE DataKinds #-} +{-# LANGUAGE DeriveAnyClass #-} +{-# LANGUAGE DeriveGeneric #-} +{-# LANGUAGE FlexibleInstances #-} +{-# LANGUAGE RankNTypes #-} +{-# LANGUAGE ScopedTypeVariables #-} +{-# LANGUAGE TypeFamilies #-} + +module Main where + +import qualified Codec.Serialise as Cborg +import Data.Int (Int32) +import Data.Kind (Type) +import qualified GHC.Generics as G +import qualified Test.Tasty as Tasty +import qualified Test.Tasty.Runners as Tasty +import Test.Tasty.QuickCheck ((===)) +import qualified Test.Tasty.QuickCheck as QC + +import Exinst +import Exinst.Serialise () + +-------------------------------------------------------------------------------- + +main :: IO () +main = Tasty.defaultMainWithIngredients + [ Tasty.consoleTestReporter + , Tasty.listingTests + ] tt + +-------------------------------------------------------------------------------- + +data family X1 :: Bool -> Type +data instance X1 'False = XF1 | XF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X1 'True = XT1 | XT2 Int32 deriving (Eq, Show, Read, G.Generic) + +data family X2 :: Bool -> Bool -> Type +data instance X2 'False 'False = XFF1 | XFF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X2 'False 'True = XFT1 | XFT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X2 'True 'False = XTF1 | XTF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X2 'True 'True = XTT1 | XTT2 Int32 deriving (Eq, Show, Read, G.Generic) + +data family X3 :: Bool -> Bool -> Bool -> Type +data instance X3 'False 'False 'False = XFFF1 | XFFF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X3 'False 'False 'True = XFFT1 | XFFT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X3 'False 'True 'False = XFTF1 | XFTF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X3 'False 'True 'True = XFTT1 | XFTT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X3 'True 'False 'False = XTFF1 | XTFF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X3 'True 'False 'True = XTFT1 | XTFT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X3 'True 'True 'False = XTTF1 | XTTF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X3 'True 'True 'True = XTTT1 | XTTT2 Int32 deriving (Eq, Show, Read, G.Generic) + +data family X4 :: Bool -> Bool -> Bool -> Bool -> Type +data instance X4 'False 'False 'False 'False = XFFFF1 | XFFFF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'False 'False 'False 'True = XFFFT1 | XFFFT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'False 'False 'True 'False = XFFTF1 | XFFTF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'False 'False 'True 'True = XFFTT1 | XFFTT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'False 'True 'False 'False = XFTFF1 | XFTFF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'False 'True 'False 'True = XFTFT1 | XFTFT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'False 'True 'True 'False = XFTTF1 | XFTTF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'False 'True 'True 'True = XFTTT1 | XFTTT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'True 'False 'False 'False = XTFFF1 | XTFFF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'True 'False 'False 'True = XTFFT1 | XTFFT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'True 'False 'True 'False = XTFTF1 | XTFTF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'True 'False 'True 'True = XTFTT1 | XTFTT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'True 'True 'False 'False = XTTFF1 | XTTFF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'True 'True 'False 'True = XTTFT1 | XTTFT2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'True 'True 'True 'False = XTTTF1 | XTTTF2 Int32 deriving (Eq, Show, Read, G.Generic) +data instance X4 'True 'True 'True 'True = XTTTT1 | XTTTT2 Int32 deriving (Eq, Show, Read, G.Generic) + +#define INSTANCETRON(c) \ + instance c (X1 'False); \ + instance c (X1 'True); \ + instance c (X2 'False 'False); \ + instance c (X2 'False 'True); \ + instance c (X2 'True 'False); \ + instance c (X2 'True 'True); \ + instance c (X3 'False 'False 'False); \ + instance c (X3 'False 'False 'True); \ + instance c (X3 'False 'True 'False); \ + instance c (X3 'False 'True 'True); \ + instance c (X3 'True 'False 'False); \ + instance c (X3 'True 'False 'True); \ + instance c (X3 'True 'True 'False); \ + instance c (X3 'True 'True 'True); \ + instance c (X4 'False 'False 'False 'False); \ + instance c (X4 'False 'False 'False 'True); \ + instance c (X4 'False 'False 'True 'False); \ + instance c (X4 'False 'False 'True 'True); \ + instance c (X4 'False 'True 'False 'False); \ + instance c (X4 'False 'True 'False 'True); \ + instance c (X4 'False 'True 'True 'False); \ + instance c (X4 'False 'True 'True 'True); \ + instance c (X4 'True 'False 'False 'False); \ + instance c (X4 'True 'False 'False 'True); \ + instance c (X4 'True 'False 'True 'False); \ + instance c (X4 'True 'False 'True 'True); \ + instance c (X4 'True 'True 'False 'False); \ + instance c (X4 'True 'True 'False 'True); \ + instance c (X4 'True 'True 'True 'False); \ + instance c (X4 'True 'True 'True 'True) + +-------------------------------------------------------------------------------- +-- Arbitrary instances + +instance QC.Arbitrary (X1 'False) where arbitrary = QC.oneof [ pure XF1, fmap XF2 QC.arbitrary ] +instance QC.Arbitrary (X1 'True) where arbitrary = QC.oneof [ pure XT1, fmap XT2 QC.arbitrary ] + +instance QC.Arbitrary (X2 'False 'False) where arbitrary = QC.oneof [ pure XFF1, fmap XFF2 QC.arbitrary ] +instance QC.Arbitrary (X2 'False 'True) where arbitrary = QC.oneof [ pure XFT1, fmap XFT2 QC.arbitrary ] +instance QC.Arbitrary (X2 'True 'False) where arbitrary = QC.oneof [ pure XTF1, fmap XTF2 QC.arbitrary ] +instance QC.Arbitrary (X2 'True 'True) where arbitrary = QC.oneof [ pure XTT1, fmap XTT2 QC.arbitrary ] + +instance QC.Arbitrary (X3 'False 'False 'False) where arbitrary = QC.oneof [ pure XFFF1, fmap XFFF2 QC.arbitrary ] +instance QC.Arbitrary (X3 'False 'False 'True) where arbitrary = QC.oneof [ pure XFFT1, fmap XFFT2 QC.arbitrary ] +instance QC.Arbitrary (X3 'False 'True 'False) where arbitrary = QC.oneof [ pure XFTF1, fmap XFTF2 QC.arbitrary ] +instance QC.Arbitrary (X3 'False 'True 'True) where arbitrary = QC.oneof [ pure XFTT1, fmap XFTT2 QC.arbitrary ] +instance QC.Arbitrary (X3 'True 'False 'False) where arbitrary = QC.oneof [ pure XTFF1, fmap XTFF2 QC.arbitrary ] +instance QC.Arbitrary (X3 'True 'False 'True) where arbitrary = QC.oneof [ pure XTFT1, fmap XTFT2 QC.arbitrary ] +instance QC.Arbitrary (X3 'True 'True 'False) where arbitrary = QC.oneof [ pure XTTF1, fmap XTTF2 QC.arbitrary ] +instance QC.Arbitrary (X3 'True 'True 'True) where arbitrary = QC.oneof [ pure XTTT1, fmap XTTT2 QC.arbitrary ] + +instance QC.Arbitrary (X4 'False 'False 'False 'False) where arbitrary = QC.oneof [ pure XFFFF1, fmap XFFFF2 QC.arbitrary ] +instance QC.Arbitrary (X4 'False 'False 'False 'True) where arbitrary = QC.oneof [ pure XFFFT1, fmap XFFFT2 QC.arbitrary ] +instance QC.Arbitrary (X4 'False 'False 'True 'False) where arbitrary = QC.oneof [ pure XFFTF1, fmap XFFTF2 QC.arbitrary ] +instance QC.Arbitrary (X4 'False 'False 'True 'True) where arbitrary = QC.oneof [ pure XFFTT1, fmap XFFTT2 QC.arbitrary ] +instance QC.Arbitrary (X4 'False 'True 'False 'False) where arbitrary = QC.oneof [ pure XFTFF1, fmap XFTFF2 QC.arbitrary ] +instance QC.Arbitrary (X4 'False 'True 'False 'True) where arbitrary = QC.oneof [ pure XFTFT1, fmap XFTFT2 QC.arbitrary ] +instance QC.Arbitrary (X4 'False 'True 'True 'False) where arbitrary = QC.oneof [ pure XFTTF1, fmap XFTTF2 QC.arbitrary ] +instance QC.Arbitrary (X4 'False 'True 'True 'True) where arbitrary = QC.oneof [ pure XFTTT1, fmap XFTTT2 QC.arbitrary ] +instance QC.Arbitrary (X4 'True 'False 'False 'False) where arbitrary = QC.oneof [ pure XTFFF1, fmap XTFFF2 QC.arbitrary ] +instance QC.Arbitrary (X4 'True 'False 'False 'True) where arbitrary = QC.oneof [ pure XTFFT1, fmap XTFFT2 QC.arbitrary ] +instance QC.Arbitrary (X4 'True 'False 'True 'False) where arbitrary = QC.oneof [ pure XTFTF1, fmap XTFTF2 QC.arbitrary ] +instance QC.Arbitrary (X4 'True 'False 'True 'True) where arbitrary = QC.oneof [ pure XTFTT1, fmap XTFTT2 QC.arbitrary ] +instance QC.Arbitrary (X4 'True 'True 'False 'False) where arbitrary = QC.oneof [ pure XTTFF1, fmap XTTFF2 QC.arbitrary ] +instance QC.Arbitrary (X4 'True 'True 'False 'True) where arbitrary = QC.oneof [ pure XTTFT1, fmap XTTFT2 QC.arbitrary ] +instance QC.Arbitrary (X4 'True 'True 'True 'False) where arbitrary = QC.oneof [ pure XTTTF1, fmap XTTTF2 QC.arbitrary ] +instance QC.Arbitrary (X4 'True 'True 'True 'True) where arbitrary = QC.oneof [ pure XTTTT1, fmap XTTTT2 QC.arbitrary ] + +-------------------------------------------------------------------------------- + +tt :: Tasty.TestTree +tt = + Tasty.testGroup "main" + [ tt_id "Identity through serialise's Serialise" id_serialise + ] + +tt_id + :: String + -> (forall a. Cborg.Serialise a => a -> Maybe a) + -- ^ It's easier to put all the constraints here in the 'MegaCtx' monster. + -> Tasty.TestTree +tt_id = \title id' -> Tasty.testGroup title + [ QC.testProperty "Some1 X1" $ + QC.forAll QC.arbitrary $ \(x :: Some1 X1) -> Just x === id' x + , QC.testProperty "Some2 X2" $ + QC.forAll QC.arbitrary $ \(x :: Some2 X2) -> Just x === id' x + , QC.testProperty "Some3 X3" $ + QC.forAll QC.arbitrary $ \(x :: Some3 X3) -> Just x === id' x + , QC.testProperty "Some4 X4" $ + QC.forAll QC.arbitrary $ \(x :: Some4 X4) -> Just x === id' x + , QC.testProperty "Some1 (P1 X1 X1)" $ + QC.forAll QC.arbitrary $ \(x :: Some1 (P1 X1 X1)) -> Just x === id' x + , QC.testProperty "Some2 (P2 X2 X2)" $ + QC.forAll QC.arbitrary $ \(x :: Some2 (P2 X2 X2)) -> Just x === id' x + , QC.testProperty "Some3 (P3 X3 X3)" $ + QC.forAll QC.arbitrary $ \(x :: Some3 (P3 X3 X3)) -> Just x === id' x + , QC.testProperty "Some4 (P4 X4 X4)" $ + QC.forAll QC.arbitrary $ \(x :: Some4 (P4 X4 X4)) -> Just x === id' x + , QC.testProperty "Some1 (S1 X1 X1)" $ + QC.forAll QC.arbitrary $ \(x :: Some1 (S1 X1 X1)) -> Just x === id' x + , QC.testProperty "Some2 (S2 X2 X2)" $ + QC.forAll QC.arbitrary $ \(x :: Some2 (S2 X2 X2)) -> Just x === id' x + , QC.testProperty "Some3 (S3 X3 X3)" $ + QC.forAll QC.arbitrary $ \(x :: Some3 (S3 X3 X3)) -> Just x === id' x + , QC.testProperty "Some4 (S4 X4 X4)" $ + QC.forAll QC.arbitrary $ \(x :: Some4 (S4 X4 X4)) -> Just x === id' x + ] + + +-------------------------------------------------------------------------------- + +INSTANCETRON(Cborg.Serialise) +id_serialise :: Cborg.Serialise a => a -> Maybe a +id_serialise = \a -> + case Cborg.deserialiseOrFail (Cborg.serialise a) of + Right a' -> Just a' + Left _ -> Nothing