| Portability | portable |
|---|---|
| Stability | transient |
| Maintainer | Niklas Broberg, d00nibro@chalmers.se |
| Safe Haskell | Safe-Infered |
Language.Haskell.Exts.Extension
Contents
Description
This entire module should be replaced with
Language.Haskell.Extension from cabal, but we must
wait for a release of cabal that includes the
XmlSyntax and RegularPatterns extensions.
- data Extension
- = OverlappingInstances
- | UndecidableInstances
- | IncoherentInstances
- | RecursiveDo
- | ParallelListComp
- | MultiParamTypeClasses
- | NoMonomorphismRestriction
- | FunctionalDependencies
- | ExplicitForAll
- | Rank2Types
- | RankNTypes
- | PolymorphicComponents
- | ExistentialQuantification
- | ScopedTypeVariables
- | ImplicitParams
- | FlexibleContexts
- | FlexibleInstances
- | EmptyDataDecls
- | CPP
- | KindSignatures
- | BangPatterns
- | TypeSynonymInstances
- | TemplateHaskell
- | ForeignFunctionInterface
- | Arrows
- | Generics
- | NoImplicitPrelude
- | NamedFieldPuns
- | PatternGuards
- | GeneralizedNewtypeDeriving
- | ExtensibleRecords
- | RestrictedTypeSynonyms
- | HereDocuments
- | MagicHash
- | TypeFamilies
- | StandaloneDeriving
- | UnicodeSyntax
- | PatternSignatures
- | UnliftedFFITypes
- | LiberalTypeSynonyms
- | TypeOperators
- | RecordWildCards
- | RecordPuns
- | DisambiguateRecordFields
- | OverloadedStrings
- | GADTs
- | MonoPatBinds
- | NoMonoPatBinds
- | RelaxedPolyRec
- | ExtendedDefaultRules
- | UnboxedTuples
- | DeriveDataTypeable
- | ConstrainedClassMethods
- | NPlusKPatterns
- | PackageImports
- | DoAndIfThenElse
- | ImpredicativeTypes
- | NewQualifiedOperators
- | PostfixOperators
- | QuasiQuotes
- | TransformListComp
- | ViewPatterns
- | XmlSyntax
- | RegularPatterns
- | TupleSections
- | UnknownExtension String
- classifyExtension :: String -> Extension
- impliesExts :: [Extension] -> [Extension]
- haskell98 :: [Extension]
- haskell2010 :: [Extension]
- glasgowExts :: [Extension]
- knownExtensions :: [Extension]
Extensions
This datatype is a copy of the one in Cabal's Language.Haskell.Extension module. The intention is to eventually import it from Cabal, but we need to wait for the next release of Cabal which includes XmlSyntax and RegularPatterns.
Constructors
classifyExtension :: String -> ExtensionSource
A clever version of read that returns an UnknownExtension
if the string is not recognised.
impliesExts :: [Extension] -> [Extension]Source
Certain extensions imply other extensions, and this function makes the implication explicit. This also handles deprecated extensions, which imply their replacements. The returned valued is the transitive closure of implied extensions.
Extension groups
glasgowExts :: [Extension]Source
The list of extensions enabled by GHC's portmanteau -fglasgow-exts flag.
knownExtensions :: [Extension]Source
List of all known extensions. Poor man's Enum instance
(we can't enum with the UnknownExtension constructor).