haskell-src-exts-1.3.5: Manipulating Haskell source: abstract syntax, lexer, parser, and pretty-printer Source code Contents Index

Language.Haskell.Exts.Extension Portability portable Stability transient Maintainer Niklas Broberg, d00nibro@chalmers.se

Contents Extensions Extension groups

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.

Synopsis

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 | PackageImports | ImpredicativeTypes | NewQualifiedOperators | PostfixOperators | QuasiQuotes | TransformListComp | ViewPatterns | XmlSyntax | RegularPatterns | TupleSections | UnknownExtension String classifyExtension :: String -> Extension impliesExts :: [Extension] -> [Extension] glasgowExts :: [Extension]

Extensions

data Extension Source

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 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 PackageImports ImpredicativeTypes NewQualifiedOperators PostfixOperators QuasiQuotes TransformListComp ViewPatterns XmlSyntax RegularPatterns TupleSections UnknownExtension String Instances Eq Extension Ord Extension Read Extension Show Extension Enabled Extension

classifyExtension :: String -> Extension Source

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.

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