packages feed

void 0.6.1 → 0.7.4

raw patch · 8 files changed

Files

.gitignore view
@@ -13,3 +13,22 @@ tags wiki wip+dist-newstyle/+.stack-work/+cabal-dev+*.chi+*.chs.h+*.dyn_o+*.dyn_hi+.hpc+.hsenv+.cabal-sandbox/+cabal.sandbox.config+*.prof+*.aux+*.hp+*.eventlog+cabal.project.local+cabal.project.local~+.HTF/+.ghc.environment.*
− .travis.yml 
@@ -1,1 +0,0 @@-language: haskell
CHANGELOG.markdown view
@@ -1,3 +1,26 @@+0.7.4 [2025.12.08]+------------------+* Drop support for pre-8.0 versions of GHC.++0.7.3 [2019.05.10]+------------------+* Backport the `Lift Void` instance introduced in `template-haskell-2.15.0.0`.++0.7.2+-----+* Only depend on `deepseq`, `hashable`, and `semigroups` if using GHC 7.8 or earlier.+* Cleaned up spurious "redundant constraint" warnings on GHC 8+++0.7.1+-----+* Support `semigroups` 0.17 on older GHCs+* Backported `NFData`'s `semigroup` instance to older GHCs.++0.7+---+* adapt to `Data.Void` being moved into `base-4.8`+* `vacuousM` removed+ 0.6 --- * `instance Exception Void`
LICENSE view
@@ -1,4 +1,4 @@-Copyright 2013 Edward Kmett+Copyright 2015 Edward Kmett  All rights reserved.
README.markdown view
@@ -1,7 +1,7 @@ void ==== -[![Build Status](https://secure.travis-ci.org/ekmett/void.png?branch=master)](http://travis-ci.org/ekmett/void)+[![Hackage](https://img.shields.io/hackage/v/void.svg)](https://hackage.haskell.org/package/void) [![Build Status](https://github.com/ekmett/void/workflows/Haskell-CI/badge.svg)](https://github.com/ekmett/void/actions?query=workflow%3AHaskell-CI)  This package provides a canonical 'uninhabited' data type for Haskell. This arises in a surprisingly wide array of situations in practice.
− src/Data/Void.hs 
@@ -1,111 +0,0 @@-{-# LANGUAGE CPP #-}-#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ >= 702-{-# LANGUAGE Trustworthy #-}-#endif--#ifdef LANGUAGE_DeriveDataTypeable-{-# LANGUAGE DeriveDataTypeable #-}-#endif--#ifdef LANGUAGE_DeriveGeneric-{-# LANGUAGE DeriveGeneric #-}-{-# LANGUAGE StandaloneDeriving #-}-#endif--#ifndef MIN_VERSION_base-#define MIN_VERSION_base(x,y,z) 1-#endif--------------------------------------------------------------------------------- |--- Copyright   :  (C) 2008-2013 Edward Kmett--- License     :  BSD-style (see the file LICENSE)------ Maintainer  :  Edward Kmett <ekmett@gmail.com>--- Stability   :  provisional--- Portability :  portable---------------------------------------------------------------------------------module Data.Void-  ( Void-  , absurd-  , vacuous-  , vacuousM-  ) where--import Control.Monad (liftM)-import Data.Ix-import Data.Hashable-import Data.Semigroup (Semigroup(..))--#ifdef LANGUAGE_DeriveDataTypeable-import Data.Data-#endif--#ifdef LANGUAGE_DeriveGeneric-import GHC.Generics-#endif--#if MIN_VERSION_base(4,0,0)-import Control.Exception-#endif---- | A logically uninhabited data type.-#if __GLASGOW_HASKELL__ < 700-data Void = Void !Void-#else-newtype Void = Void Void-#endif-#ifdef LANGUAGE_DeriveDataTypeable-  deriving (Data, Typeable)-#endif--#ifdef LANGUAGE_DeriveGeneric-deriving instance Generic Void-#endif--instance Eq Void where-  _ == _ = True--instance Hashable Void where-  hashWithSalt _ = absurd--instance Ord Void where-  compare _ _ = EQ--instance Show Void where-  showsPrec _ = absurd---- | Reading a 'Void' value is always a parse error, considering 'Void' as--- a data type with no constructors.-instance Read Void where-  readsPrec _ _ = []---- | Since 'Void' values logically don't exist, this witnesses the logical--- reasoning tool of \"ex falso quodlibet\".-absurd :: Void -> a-absurd a = a `seq` spin a where-   spin (Void b) = spin b---- | If 'Void' is uninhabited then any 'Functor' that holds only values of type 'Void'--- is holding no values.-vacuous :: Functor f => f Void -> f a-vacuous = fmap absurd---- | If 'Void' is uninhabited then any 'Monad' that holds values of type 'Void'--- is holding no values.-vacuousM :: Monad m => m Void -> m a-vacuousM = liftM absurd--instance Semigroup Void where-  a <> _ = a-  times1p _ a = a--instance Ix Void where-  range _ = []-  index _ = absurd-  inRange _ = absurd-  rangeSize _ = 0--#if MIN_VERSION_base(4,0,0)-instance Exception Void-#endif
src/Data/Void/Unsafe.hs view
@@ -1,11 +1,12 @@ {-# LANGUAGE CPP #-}-#if !defined(SAFE) && defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ >= 704+#if !defined(SAFE) && defined(__GLASGOW_HASKELL__) #define UNSAFE {-# LANGUAGE Unsafe #-} #endif+{-# OPTIONS_GHC -Wno-redundant-constraints #-} -- they aren't redundant! ----------------------------------------------------------------------------- -- |--- Copyright   :  (C) 2008-2013 Edward Kmett+-- Copyright   :  (C) 2008-2015 Edward Kmett -- License     :  BSD-style (see the file LICENSE) -- -- Maintainer  :  Edward Kmett <ekmett@gmail.com>@@ -24,7 +25,7 @@ import Unsafe.Coerce #endif --- | If 'Void' is uninhabited than any 'Functor' that holds only values of the type 'Void'+-- | If 'Void' is uninhabited then any 'Functor' that holds only values of the type 'Void' -- is holding no values. -- -- This is only safe for valid functors that do not perform GADT-like analysis on the argument.
void.cabal view
@@ -1,57 +1,56 @@ name:          void category:      Data Structures-version:       0.6.1+version:       0.7.4 license:       BSD3-cabal-version: >= 1.6+cabal-version: >= 1.10 license-file:  LICENSE author:        Edward A. Kmett maintainer:    Edward A. Kmett <ekmett@gmail.com> stability:     portable homepage:      http://github.com/ekmett/void bug-reports:   http://github.com/ekmett/void/issues-copyright:     Copyright (C) 2008-2013 Edward A. Kmett+copyright:     Copyright (C) 2008-2015 Edward A. Kmett synopsis:      A Haskell 98 logically uninhabited data type description:   A Haskell 98 logically uninhabited data type, used to indicate that a given term should not exist. build-type:    Simple+tested-with:   GHC==9.12.2+             , GHC==9.10.3+             , GHC==9.8.4+             , GHC==9.6.6+             , GHC==9.4.8+             , GHC==9.2.8+             , GHC==9.0.2+             , GHC==8.10.7+             , GHC==8.8.4+             , GHC==8.6.5+             , GHC==8.4.4+             , GHC==8.2.2+             , GHC==8.0.2  extra-source-files:   .ghci   .gitignore-  .travis.yml   .vim.custom   CHANGELOG.markdown   README.markdown  source-repository head   type: git-  location: git://github.com/ekmett/void.git+  location: https://github.com/ekmett/void.git  flag safe   manual: True   default: False  library+  default-language: Haskell98   hs-source-dirs: src   exposed-modules:-    Data.Void     Data.Void.Unsafe -  build-depends:-    base       >= 3 && < 10,-    hashable   >= 1.1,-    semigroups >= 0.8.2+  build-depends: base >= 3 && < 10    ghc-options: -Wall    if flag(safe)     cpp-options: -DSAFE--  if impl(ghc)-    other-extensions: DeriveDataTypeable-    cpp-options: -DLANGUAGE_DeriveDataTypeable--  if impl(ghc >= 7.2)-    other-extensions: StandaloneDeriving-    -- other-extensions: DeriveGeneric isn't known to cabal yet-    cpp-options: -DLANGUAGE_DeriveGeneric-    build-depends: ghc-prim