constraint (empty) → 0.1.0.0

raw patch · 4 files changed

+101/−0 lines, 4 filesdep +basedep +categorysetup-changed

Dependencies added: base, category

Files

• Data/Constraint.hs +41/−0
• LICENSE +30/−0
• Setup.hs +2/−0
• constraint.cabal +28/−0

@@ -0,0 +1,41 @@+module Data.Constraint where++import Prelude hiding (Functor, (.), id)++import Control.Categorical.Functor+import Control.Category++data Dict a where Dict :: a => Dict a++deriving instance Eq (Dict a)+deriving instance Ord (Dict a)+deriving instance a => Read (Dict a)+deriving instance Show (Dict a)+deriving instance a => Bounded (Dict a)++instance a => Enum (Dict a) where+    toEnum _ = Dict+    fromEnum Dict = 0++instance Semigroup (Dict a) where Dict <> Dict = Dict+instance a => Monoid (Dict a) where+    mempty = Dict+    mappend = (<>)++withDict :: Dict a -> (a => b) -> b+withDict Dict b = b++newtype a :- b = Sub (a => Dict b)++instance Eq (a :- b) where Sub _ == Sub _ = True+instance Ord (a :- b) where Sub _ `compare` Sub _ = EQ+instance Show (a :- b) where showsPrec p (Sub _) = showParen (p > 10) $ showString "Sub Dict"++instance Category (:-) where+    id = Sub Dict+    Sub c . Sub b = Sub (withDict b c)++instance Functor (:-) (->) Dict where map (Sub a) Dict = withDict a Dict++unmapDict :: (Dict a -> Dict b) -> a :- b+unmapDict f = Sub (f Dict)

@@ -0,0 +1,30 @@+Copyright (c) 2017, M Farkas-Dyck++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 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,28 @@+name:                constraint+version:             0.1.0.0+synopsis:            Reified constraints+-- description:         +license:             BSD3+license-file:        LICENSE+author:              M Farkas-Dyck+maintainer:          m.farkasdyck@gmail.com+-- copyright:           +category:            Constraint+build-type:          Simple+cabal-version:       >=1.10++library+  exposed-modules:     Data.Constraint+  -- other-modules:       +  -- other-extensions:    +  build-depends:       base >=4.10 && <4.12+                     , category >=0.1.2+  -- hs-source-dirs:      +  default-language:    Haskell2010+  default-extensions:  TypeOperators+                     , RankNTypes+                     , PolyKinds+                     , ConstraintKinds+                     , MultiParamTypeClasses+                     , GADTs+                     , StandaloneDeriving