inj-base (empty) → 0.1.0.0

raw patch · 4 files changed

+299/−0 lines, 4 filesdep +basedep +injsetup-changed

Dependencies added: base, inj

Files

Inj/Base.hs +251/−0
LICENSE +30/−0
Setup.hs +2/−0
inj-base.cabal +16/−0

+ Inj/Base.hs view

@@ -0,0 +1,251 @@+-- | 'Inj' instances for types from 'base'.++{-# LANGUAGE+    DefaultSignatures,+    MultiParamTypeClasses,+    FlexibleInstances,+    FlexibleContexts,+    TypeFamilies,+    ScopedTypeVariables,+    DataKinds,+    TypeOperators,+    UndecidableInstances+#-}++module Inj.Base () where++import GHC.TypeLits+import Control.Applicative+import Control.Exception hiding (TypeError)+import Control.Monad.ST+import Data.Complex+import Data.Fixed+import Data.Functor.Compose+import Data.Functor.Identity+import Data.Int+import Data.List.NonEmpty+import Data.Monoid+import Data.Ord+import Data.Proxy+import Data.Semigroup+import Data.Word+import Foreign.Ptr+import GHC.Conc+import GHC.Generics+import GHC.Real+import Numeric.Natural+import Text.ParserCombinators.ReadP+import Text.ParserCombinators.ReadPrec++import Inj++--------------------------------------------------------------------------------+-- 'fromIntegral' is an injection from any @Integral p@ to any @Num a@.+--------------------------------------------------------------------------------++instance Integral p => Inj p Integer where+  inj = toInteger++-- | Throws 'Underflow'.+instance Integral p => Inj p Natural where+  inj = fromIntegral++fromIntegralBounded ::+  forall p a. (Integral a, Bounded a) => Integral p => p -> a+fromIntegralBounded p+  | p' < toInteger (minBound :: a) = throw Underflow+  | p' > toInteger (maxBound :: a) = throw Overflow+  | otherwise = fromInteger p'+  where+    p' = toInteger p++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Int where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Int8 where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Int16 where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Int32 where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Int64 where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Word where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Word8 where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Word16 where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Word32 where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p Word64 where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p IntPtr where+  inj = fromIntegralBounded++-- | Throws 'Underflow' and 'Overflow'.+instance Integral p => Inj p WordPtr where+  inj = fromIntegralBounded++--------------------------------------------------------------------------------+-- 'realToFrac' is an injection from any @Real p@ to any @Fractional a@.+--------------------------------------------------------------------------------++instance (Inj Integer a, Real p) => Inj p (Ratio a) where+  inj p = inj n :% inj d+    where+      n :% d = toRational p++-- | Throws 'LossOfPrecision'.+instance (HasResolution res, Real p) => Inj p (Fixed res) where+  inj p+    | denominator i == 1 = MkFixed (numerator i)+    | otherwise = throw LossOfPrecision+    where+      i = toRational p * toRational res+      res = resolution (Proxy :: Proxy res)++-- | Injective only if the number is representable as 'Float'.+instance Real p => Inj p Float where+  inj = realToFrac++-- | Injective only if the number is representable as 'Double'.+instance Real p => Inj p Double where+  inj = realToFrac++instance (Num a, Inj p a) => Inj p (Complex a) where+  inj p = inj p :+ 0++--------------------------------------------------------------------------------+-- 'pure' is often an injection into @Applicative f@.+--------------------------------------------------------------------------------++instance Inj p a => Inj p [a] where+  inj = pure . inj++instance Inj p a => Inj p (Maybe a) where+  inj = pure . inj++instance Inj p a => Inj p (IO a) where+  inj = pure . inj++instance Inj p a => Inj p (NonEmpty a) where+  inj = pure . inj++instance Inj p a => Inj p (ReadP a) where+  inj = pure . inj++instance Inj p a => Inj p (ReadPrec a) where+  inj = pure . inj++instance Inj p a => Inj p (Down a) where+  inj = pure . inj++instance Inj p a => Inj p (Product a) where+  inj = pure . inj++instance Inj p a => Inj p (Sum a) where+  inj = pure . inj++instance Inj p a => Inj p (Dual a) where+  inj = pure . inj++instance Inj p a => Inj p (Data.Monoid.Last a) where+  inj = pure . inj++instance Inj p a => Inj p (Data.Monoid.First a) where+  inj = pure . inj++instance Inj p a => Inj p (STM a) where+  inj = pure . inj++instance Inj p a => Inj p (Identity a) where+  inj = pure . inj++instance Inj p a => Inj p (ZipList a) where+  inj = pure . inj++instance Inj p a => Inj p (Option a) where+  inj = pure . inj++instance Inj p a => Inj p (Data.Semigroup.Last a) where+  inj = pure . inj++instance Inj p a => Inj p (Data.Semigroup.First a) where+  inj = pure . inj++instance Inj p a => Inj p (Max a) where+  inj = pure . inj++instance Inj p a => Inj p (Min a) where+  inj = pure . inj++instance+    TypeError+      ('Text "Refusing to decide whether to inject " ':<>:+       'ShowType p ':<>: 'Text " into 'Left' " ':<>:+       'ShowType x ':<>: 'Text " or 'Right' " ':<>: 'ShowType y ':$$:+       'Text "in the " ':<>: 'ShowType Inj ':<>:+       'Text " instance for " ':<>: 'ShowType Either) =>+    Inj p (Either x y)+  where+    inj = error "impossible"++instance+    TypeError+      ('Text "Refusing to decide whether to inject " ':<>:+       'ShowType p ':<>: 'Text " into 'fst' " ':<>:+       'ShowType x ':<>: 'Text " or 'snd' " ':<>: 'ShowType y ':$$:+       'Text "in the " ':<>: 'ShowType Inj ':<>:+       'Text " instance for " ':<>: 'ShowType (,)) =>+    Inj p ((,) x y)+  where+    inj = error "impossible"++instance Inj p a => Inj p (ST s a) where+  inj = pure . inj++instance Inj p a => Inj p (r -> a) where+  inj = pure . inj++instance Inj p (f (g a)) => Inj p (Compose f g a) where+  inj = Compose . inj++--------------------------------------------------------------------------------+-- Generic+--------------------------------------------------------------------------------++instance Inj p (f a) => Inj p (Rec1 f a) where+  inj = Rec1 . inj++instance Inj p (f a) => Inj p (M1 i c f a) where+  inj = M1 . inj++instance Inj p a => Inj p (Par1 a) where+  inj = Par1 . inj++instance Inj p a => Inj p (K1 i a x) where+  inj = K1 . inj++instance Inj p (f (g a)) => Inj p ((:.:) f g a) where+  inj = Comp1 . inj

+ LICENSE view

@@ -0,0 +1,30 @@+Copyright (c) 2018, Vladislav Zavialov++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 Vladislav Zavialov 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.

+ Setup.hs view

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

+ inj-base.cabal view

@@ -0,0 +1,16 @@+name:                inj-base+version:             0.1.0.0+synopsis:            'Inj' instances for 'base'+license:             BSD3+license-file:        LICENSE+author:              Vladislav Zavialov+maintainer:          Vladislav Zavialov <vlad.z.4096@gmail.com>+category:            Data+build-type:          Simple+cabal-version:       >=1.10++library+  exposed-modules:     Inj.Base+  build-depends:       base >=4.11 && <5, inj+  default-language:    Haskell2010+  ghc-options:         -Wall -fno-warn-orphans