exist-instances (empty) → 0.1.0.0

raw patch · 4 files changed

+104/−0 lines, 4 filesdep +basedep +base-unicode-symbolsdep +constraint

Dependencies added: base, base-unicode-symbols, constraint, exist, util

Files

• Data/Exists/Constrained/Instances.hs +26/−0
• LICENSE +30/−0
• README.md +1/−0
• exist-instances.cabal +47/−0

@@ -0,0 +1,26 @@+{-# LANGUAGE ScopedTypeVariables #-}+{-# LANGUAGE QuantifiedConstraints #-}+{-# LANGUAGE GADTs #-}+{-# LANGUAGE TypeOperators #-}+module Data.Exists.Constrained.Instances where++import Data.Exists.Constrained+import Data.Constraint+import Data.Constraint.Lifting+import Data.Type.Equality+import Type.Reflection++instance (Typeable a, Lifting c Eq a) => Eq (E c a) where+    E a == E b =+        (\ (Refl :: a i :~: a j) -> case (lift :: c i :- Eq (a i)) of Sub Dict -> a == b) `any`+        testEquality (typeOf a) (typeOf b)++instance (Typeable a, Lifting c Eq a, Lifting c Ord a) => Ord (E c a) where+    compare (E (a :: a i)) (E b)+      | Just (Refl :: a i :~: a j) <- testEquality s t+      , Sub Dict <- lift :: c i :- Ord (a i) = compare a b+      | otherwise = compare (SomeTypeRep s) (SomeTypeRep t)+      where (s, t) = (typeOf a, typeOf b)++instance (Lifting c Show a) => Show (E c a) where+    showsPrec n (E (a :: a i)) | Sub Dict <- lift :: c i :- Show (a i) = showsPrec n a

@@ -0,0 +1,30 @@+Copyright M Farkas-Dyck © 2019++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 M Farkas-Dyck 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.

@@ -0,0 +1,1 @@+# exist-methods

@@ -0,0 +1,47 @@+name:                exist-instances+version:             0.1.0.0+synopsis:            Instances for "exist" package (requires more language extensions and dependencies)+-- description:+license:             BSD3+license-file:        LICENSE+author:              M Farkas-Dyck+maintainer:          strake888@gmail.com+copyright:           2019 M Farkas-Dyck+-- category:            +build-type:          Simple+extra-source-files:  README.md+cabal-version:       >=1.10++library+  hs-source-dirs:      .+  exposed-modules:     Data.Exists.Constrained.Instances+  build-depends:       base >= 4.7 && < 5+                     , base-unicode-symbols+                     , constraint+                     , exist+                     , util+  default-language:    Haskell2010+  default-extensions:  UnicodeSyntax+                     , LambdaCase+                     , EmptyCase+                     , MonadComprehensions+                     , InstanceSigs+                     , PartialTypeSignatures+                     , PolyKinds+                     , ConstraintKinds+                     , FlexibleContexts+                     , FlexibleInstances+                     , MonadComprehensions+                     , StandaloneDeriving+                     , DeriveFunctor, DeriveFoldable, DeriveTraversable+  ghc-options:         -Wall -Wcompat -Wredundant-constraints -Wno-name-shadowing+                       -Wincomplete-record-updates -Wincomplete-uni-patterns+                       -Werror=incomplete-patterns+                       -Werror=incomplete-uni-patterns+                       -Werror=incomplete-record-updates+                       -Werror=missing-fields+                       -Werror=missing-methods++source-repository head+  type:     git+  location: https://github.com/strake/exist-instances.hs