Copyright	Isaac Jones 2003-2004
License	BSD3
Maintainer	libraries@haskell.org
Portability	portable
Safe Haskell	None
Language	Haskell2010

Language.Haskell.Extension

Description

Haskell language dialects and extensions

Synopsis

data Language
- = Haskell98
- | Haskell2010
- | UnknownLanguage String
knownLanguages :: [Language]
classifyLanguage :: String -> Language
data Extension
data KnownExtension
- = OverlappingInstances
- | UndecidableInstances
- | IncoherentInstances
- | DoRec
- | RecursiveDo
- | ParallelListComp
- | MultiParamTypeClasses
- | MonomorphismRestriction
- | FunctionalDependencies
- | Rank2Types
- | RankNTypes
- | PolymorphicComponents
- | ExistentialQuantification
- | ScopedTypeVariables
- | PatternSignatures
- | ImplicitParams
- | FlexibleContexts
- | FlexibleInstances
- | EmptyDataDecls
- | CPP
- | KindSignatures
- | BangPatterns
- | TypeSynonymInstances
- | TemplateHaskell
- | ForeignFunctionInterface
- | Arrows
- | Generics
- | ImplicitPrelude
- | NamedFieldPuns
- | PatternGuards
- | GeneralizedNewtypeDeriving
- | ExtensibleRecords
- | RestrictedTypeSynonyms
- | HereDocuments
- | MagicHash
- | TypeFamilies
- | StandaloneDeriving
- | UnicodeSyntax
- | UnliftedFFITypes
- | InterruptibleFFI
- | CApiFFI
- | LiberalTypeSynonyms
- | TypeOperators
- | RecordWildCards
- | RecordPuns
- | DisambiguateRecordFields
- | TraditionalRecordSyntax
- | OverloadedStrings
- | GADTs
- | GADTSyntax
- | MonoPatBinds
- | RelaxedPolyRec
- | ExtendedDefaultRules
- | UnboxedTuples
- | DeriveDataTypeable
- | DeriveGeneric
- | DefaultSignatures
- | InstanceSigs
- | ConstrainedClassMethods
- | PackageImports
- | ImpredicativeTypes
- | NewQualifiedOperators
- | PostfixOperators
- | QuasiQuotes
- | TransformListComp
- | MonadComprehensions
- | ViewPatterns
- | XmlSyntax
- | RegularPatterns
- | TupleSections
- | GHCForeignImportPrim
- | NPlusKPatterns
- | DoAndIfThenElse
- | MultiWayIf
- | LambdaCase
- | RebindableSyntax
- | ExplicitForAll
- | DatatypeContexts
- | MonoLocalBinds
- | DeriveFunctor
- | DeriveTraversable
- | DeriveFoldable
- | NondecreasingIndentation
- | SafeImports
- | Safe
- | Trustworthy
- | Unsafe
- | ConstraintKinds
- | PolyKinds
- | DataKinds
- | ParallelArrays
- | RoleAnnotations
- | OverloadedLists
- | EmptyCase
- | AutoDeriveTypeable
- | NegativeLiterals
- | BinaryLiterals
- | NumDecimals
- | NullaryTypeClasses
- | ExplicitNamespaces
- | AllowAmbiguousTypes
- | JavaScriptFFI
- | PatternSynonyms
- | PartialTypeSignatures
- | NamedWildCards
- | DeriveAnyClass
- | DeriveLift
- | StaticPointers
- | StrictData
- | Strict
- | ApplicativeDo
- | DuplicateRecordFields
- | TypeApplications
- | TypeInType
- | UndecidableSuperClasses
- | MonadFailDesugaring
- | TemplateHaskellQuotes
- | OverloadedLabels
- | TypeFamilyDependencies
- | DerivingStrategies
- | UnboxedSums
- | HexFloatLiterals
knownExtensions :: [KnownExtension]
deprecatedExtensions :: [(Extension, Maybe Extension)]
classifyExtension :: String -> Extension

Documentation

data Language Source #

This represents a Haskell language dialect.

Language Extensions are interpreted relative to one of these base languages.

Constructors

Haskell98	The Haskell 98 language as defined by the Haskell 98 report. http://haskell.org/onlinereport/
Haskell2010	The Haskell 2010 language as defined by the Haskell 2010 report. http://www.haskell.org/onlinereport/haskell2010
UnknownLanguage String	An unknown language, identified by its name.

Instances

Eq Language Source #
Instance details Defined in Language.Haskell.Extension Methods (==) :: Language -> Language -> Bool # (/=) :: Language -> Language -> Bool #
Data Language Source #
Instance details Defined in Language.Haskell.Extension Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Language -> c Language Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Language Source # toConstr :: Language -> Constr Source # dataTypeOf :: Language -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Language) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Language) Source # gmapT :: (forall b. Data b => b -> b) -> Language -> Language Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Language -> r Source # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Language -> r Source # gmapQ :: (forall d. Data d => d -> u) -> Language -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> Language -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Language -> m Language Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Language -> m Language Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Language -> m Language Source #
Read Language Source #
Instance details Defined in Language.Haskell.Extension Methods readsPrec :: Int -> ReadS Language Source # readList :: ReadS [Language] Source # readPrec :: ReadPrec Language Source # readListPrec :: ReadPrec [Language] Source #
Show Language Source #
Instance details Defined in Language.Haskell.Extension Methods showsPrec :: Int -> Language -> ShowS Source # show :: Language -> String Source # showList :: [Language] -> ShowS Source #
Generic Language Source #
Instance details Defined in Language.Haskell.Extension Associated Types type Rep Language :: * -> * Source # Methods from :: Language -> Rep Language x Source # to :: Rep Language x -> Language Source #
NFData Language Source #
Instance details Defined in Language.Haskell.Extension Methods rnf :: Language -> () Source #
Binary Language Source #
Instance details Defined in Language.Haskell.Extension Methods put :: Language -> Put Source # get :: Get Language Source # putList :: [Language] -> Put Source #
Pretty Language Source #
Instance details Defined in Language.Haskell.Extension Methods pretty :: Language -> Doc Source #
Parsec Language Source #
Instance details Defined in Language.Haskell.Extension Methods parsec :: CabalParsing m => m Language Source #
Text Language Source #
Instance details Defined in Language.Haskell.Extension Methods disp :: Language -> Doc Source # parse :: ReadP r Language Source #
type Rep Language Source #
Instance details Defined in Language.Haskell.Extension type Rep Language = D1 (MetaData "Language" "Language.Haskell.Extension" "Cabal-2.2.0.1" False) (C1 (MetaCons "Haskell98" PrefixI False) (U1 :: * -> ) :+: (C1 (MetaCons "Haskell2010" PrefixI False) (U1 :: -> *) :+: C1 (MetaCons "UnknownLanguage" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 String))))

knownLanguages :: [Language] Source #

classifyLanguage :: String -> Language Source #

data Extension Source #

This represents language extensions beyond a base Language definition (such as Haskell98) that are supported by some implementations, usually in some special mode.

Where applicable, references are given to an implementation's official documentation.

Constructors

EnableExtension KnownExtension	Enable a known extension
DisableExtension KnownExtension	Disable a known extension
UnknownExtension String	An unknown extension, identified by the name of its `LANGUAGE` pragma.

Instances

Eq Extension Source #
Instance details Defined in Language.Haskell.Extension Methods (==) :: Extension -> Extension -> Bool # (/=) :: Extension -> Extension -> Bool #
Data Extension Source #
Instance details Defined in Language.Haskell.Extension Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Extension -> c Extension Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Extension Source # toConstr :: Extension -> Constr Source # dataTypeOf :: Extension -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Extension) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Extension) Source # gmapT :: (forall b. Data b => b -> b) -> Extension -> Extension Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Extension -> r Source # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Extension -> r Source # gmapQ :: (forall d. Data d => d -> u) -> Extension -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> Extension -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Extension -> m Extension Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Extension -> m Extension Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Extension -> m Extension Source #
Ord Extension Source #
Instance details Defined in Language.Haskell.Extension Methods compare :: Extension -> Extension -> Ordering # (<) :: Extension -> Extension -> Bool # (<=) :: Extension -> Extension -> Bool # (>) :: Extension -> Extension -> Bool # (>=) :: Extension -> Extension -> Bool # max :: Extension -> Extension -> Extension # min :: Extension -> Extension -> Extension #
Read Extension Source #
Instance details Defined in Language.Haskell.Extension Methods readsPrec :: Int -> ReadS Extension Source # readList :: ReadS [Extension] Source # readPrec :: ReadPrec Extension Source # readListPrec :: ReadPrec [Extension] Source #
Show Extension Source #
Instance details Defined in Language.Haskell.Extension Methods showsPrec :: Int -> Extension -> ShowS Source # show :: Extension -> String Source # showList :: [Extension] -> ShowS Source #
Generic Extension Source #
Instance details Defined in Language.Haskell.Extension Associated Types type Rep Extension :: * -> * Source # Methods from :: Extension -> Rep Extension x Source # to :: Rep Extension x -> Extension Source #
NFData Extension Source #
Instance details Defined in Language.Haskell.Extension Methods rnf :: Extension -> () Source #
Binary Extension Source #
Instance details Defined in Language.Haskell.Extension Methods put :: Extension -> Put Source # get :: Get Extension Source # putList :: [Extension] -> Put Source #
Pretty Extension Source #
Instance details Defined in Language.Haskell.Extension Methods pretty :: Extension -> Doc Source #
Parsec Extension Source #
Instance details Defined in Language.Haskell.Extension Methods parsec :: CabalParsing m => m Extension Source #
Text Extension Source #
Instance details Defined in Language.Haskell.Extension Methods disp :: Extension -> Doc Source # parse :: ReadP r Extension Source #
type Rep Extension Source #
Instance details Defined in Language.Haskell.Extension type Rep Extension = D1 (MetaData "Extension" "Language.Haskell.Extension" "Cabal-2.2.0.1" False) (C1 (MetaCons "EnableExtension" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 KnownExtension)) :+: (C1 (MetaCons "DisableExtension" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 KnownExtension)) :+: C1 (MetaCons "UnknownExtension" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 String))))

data KnownExtension Source #

Constructors

OverlappingInstances	Allow overlapping class instances, provided there is a unique most specific instance for each use. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XOverlappingInstances
UndecidableInstances	Ignore structural rules guaranteeing the termination of class instance resolution. Termination is guaranteed by a fixed-depth recursion stack, and compilation may fail if this depth is exceeded. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XUndecidableInstances
IncoherentInstances	Implies `OverlappingInstances`. Allow the implementation to choose an instance even when it is possible that further instantiation of types will lead to a more specific instance being applicable. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XIncoherentInstances
DoRec	(deprecated) Deprecated in favour of `RecursiveDo`. Old description: Allow recursive bindings in `do` blocks, using the `rec` keyword. See also `RecursiveDo`.
RecursiveDo	Allow recursive bindings in `do` blocks, using the `rec` keyword, or `mdo`, a variant of `do`. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XRecursiveDo
ParallelListComp	Provide syntax for writing list comprehensions which iterate over several lists together, like the `zipWith` family of functions. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XParallelListComp
MultiParamTypeClasses	Allow multiple parameters in a type class. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XMultiParamTypeClasses
MonomorphismRestriction	Enable the dreaded monomorphism restriction. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XNoMonomorphismRestriction
FunctionalDependencies	Allow a specification attached to a multi-parameter type class which indicates that some parameters are entirely determined by others. The implementation will check that this property holds for the declared instances, and will use this property to reduce ambiguity in instance resolution. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XFunctionalDependencies
Rank2Types	(deprecated) A synonym for `RankNTypes`. Old description: Like `RankNTypes` but does not allow a higher-rank type to itself appear on the left of a function arrow. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XRank2Types
RankNTypes	Allow a universally-quantified type to occur on the left of a function arrow. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XRankNTypes
PolymorphicComponents	(deprecated) A synonym for `RankNTypes`. Old description: Allow data constructors to have polymorphic arguments. Unlike `RankNTypes`, does not allow this for ordinary functions. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#arbitrary-rank-polymorphism
ExistentialQuantification	Allow existentially-quantified data constructors. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XExistentialQuantification
ScopedTypeVariables	Cause a type variable in a signature, which has an explicit `forall` quantifier, to scope over the definition of the accompanying value declaration. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XScopedTypeVariables
PatternSignatures	Deprecated, use `ScopedTypeVariables` instead.
ImplicitParams	Enable implicit function parameters with dynamic scope. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XImplicitParams
FlexibleContexts	Relax some restrictions on the form of the context of a type signature. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XFlexibleContexts
FlexibleInstances	Relax some restrictions on the form of the context of an instance declaration. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XFlexibleInstances
EmptyDataDecls	Allow data type declarations with no constructors. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XEmptyDataDecls
CPP	Run the C preprocessor on Haskell source code. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#language-pragma
KindSignatures	Allow an explicit kind signature giving the kind of types over which a type variable ranges. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XKindSignatures
BangPatterns	Enable a form of pattern which forces evaluation before an attempted match, and a form of strict `let`/`where` binding. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XBangPatterns
TypeSynonymInstances	Allow type synonyms in instance heads. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XTypeSynonymInstances
TemplateHaskell	Enable Template Haskell, a system for compile-time metaprogramming. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XTemplateHaskell
ForeignFunctionInterface	Enable the Foreign Function Interface. In GHC, implements the standard Haskell 98 Foreign Function Interface Addendum, plus some GHC-specific extensions. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#language-pragma
Arrows	Enable arrow notation. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XArrows
Generics	(deprecated) Enable generic type classes, with default instances defined in terms of the algebraic structure of a type. https://haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#generic-classes
ImplicitPrelude	Enable the implicit importing of the module Prelude. When disabled, when desugaring certain built-in syntax into ordinary identifiers, use whatever is in scope rather than the Prelude -- version. https://haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#rebindable-syntax-and-the-implicit-prelude-import
NamedFieldPuns	Enable syntax for implicitly binding local names corresponding to the field names of a record. Puns bind specific names, unlike `RecordWildCards`. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XNamedFieldPuns
PatternGuards	Enable a form of guard which matches a pattern and binds variables. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XPatternGuards
GeneralizedNewtypeDeriving	Allow a type declared with `newtype` to use `deriving` for any class with an instance for the underlying type. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XGeneralizedNewtypeDeriving
ExtensibleRecords	Enable the "Trex" extensible records system. http://haskell.org/hugs/pages/users_guide/hugs-only.html#TREX
RestrictedTypeSynonyms	Enable type synonyms which are transparent in some definitions and opaque elsewhere, as a way of implementing abstract datatypes. http://haskell.org/hugs/pages/users_guide/restricted-synonyms.html
HereDocuments	Enable an alternate syntax for string literals, with string templating. http://haskell.org/hugs/pages/users_guide/here-documents.html
MagicHash	Allow the character `#` as a postfix modifier on identifiers. Also enables literal syntax for unboxed values. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XMagicHash
TypeFamilies	Allow data types and type synonyms which are indexed by types, i.e. ad-hoc polymorphism for types. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XTypeFamilies
StandaloneDeriving	Allow a standalone declaration which invokes the type class `deriving` mechanism. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XStandaloneDeriving
UnicodeSyntax	Allow certain Unicode characters to stand for certain ASCII character sequences, e.g. keywords and punctuation. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XUnicodeSyntax
UnliftedFFITypes	Allow the use of unboxed types as foreign types, e.g. in `foreign import` and `foreign export`. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#language-options
InterruptibleFFI	Enable interruptible FFI. https://haskell.org/ghc/docs/latest/html/users_guide/ffi-chap.html#interruptible-foreign-calls
CApiFFI	Allow use of CAPI FFI calling convention (`foreign import capi`). https://haskell.org/ghc/docs/latest/html/users_guide/ffi-chap.html#the-capi-calling-convention
LiberalTypeSynonyms	Defer validity checking of types until after expanding type synonyms, relaxing the constraints on how synonyms may be used. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XLiberalTypeSynonyms
TypeOperators	Allow the name of a type constructor, type class, or type variable to be an infix operator. * https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XTypeOperators
RecordWildCards	Enable syntax for implicitly binding local names corresponding to the field names of a record. A wildcard binds all unmentioned names, unlike `NamedFieldPuns`. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XRecordWildCards
RecordPuns	Deprecated, use `NamedFieldPuns` instead.
DisambiguateRecordFields	Allow a record field name to be disambiguated by the type of the record it's in. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDisambiguateRecordFields
TraditionalRecordSyntax	Enable traditional record syntax (as supported by Haskell 98) https://haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#traditional-record-syntax
OverloadedStrings	Enable overloading of string literals using a type class, much like integer literals. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XOverloadedStrings
GADTs	Enable generalized algebraic data types, in which type variables may be instantiated on a per-constructor basis. Implies `GADTSyntax`. https://haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#generalised-algebraic-data-types-gadts
GADTSyntax	Enable GADT syntax for declaring ordinary algebraic datatypes. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XGADTSyntax
MonoPatBinds	(deprecated) Has no effect. Old description: Make pattern bindings monomorphic. https://downloads.haskell.org/~ghc/7.6.3/docs/html/users_guide/monomorphism.html
RelaxedPolyRec	Relax the requirements on mutually-recursive polymorphic functions. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XRelaxedPolyRec
ExtendedDefaultRules	Allow default instantiation of polymorphic types in more situations. http://downloads.haskell.org/~ghc/latest/docs/html/users_guide/ghci.html#type-defaulting-in-ghci
UnboxedTuples	Enable unboxed tuples. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XUnboxedTuples
DeriveDataTypeable	Enable `deriving` for classes `Typeable` and `Data`. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDeriveDataTypeable
DeriveGeneric	Enable `deriving` for `Generic` and `Generic1`. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDeriveGeneric
DefaultSignatures	Enable support for default signatures. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDefaultSignatures
InstanceSigs	Allow type signatures to be specified in instance declarations. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XInstanceSigs
ConstrainedClassMethods	Allow a class method's type to place additional constraints on a class type variable. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XConstrainedClassMethods
PackageImports	Allow imports to be qualified by the package name the module is intended to be imported from, e.g. import "network" Network.Socket https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XPackageImports
ImpredicativeTypes	(deprecated) Allow a type variable to be instantiated at a polymorphic type. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XImpredicativeTypes
NewQualifiedOperators	(deprecated) Change the syntax for qualified infix operators. http://www.haskell.org/ghc/docs/6.12.3/html/users_guide/syntax-extns.html#new-qualified-operators
PostfixOperators	Relax the interpretation of left operator sections to allow unary postfix operators. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XPostfixOperators
QuasiQuotes	Enable quasi-quotation, a mechanism for defining new concrete syntax for expressions and patterns. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XQuasiQuotes
TransformListComp	Enable generalized list comprehensions, supporting operations such as sorting and grouping. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XTransformListComp
MonadComprehensions	Enable monad comprehensions, which generalise the list comprehension syntax to work for any monad. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XMonadComprehensions
ViewPatterns	Enable view patterns, which match a value by applying a function and matching on the result. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XViewPatterns
XmlSyntax	Allow concrete XML syntax to be used in expressions and patterns, as per the Haskell Server Pages extension language: http://www.haskell.org/haskellwiki/HSP. The ideas behind it are discussed in the paper "Haskell Server Pages through Dynamic Loading" by Niklas Broberg, from Haskell Workshop '05.
RegularPatterns	Allow regular pattern matching over lists, as discussed in the paper "Regular Expression Patterns" by Niklas Broberg, Andreas Farre and Josef Svenningsson, from ICFP '04.
TupleSections	Enable the use of tuple sections, e.g. `(, True)` desugars into `x -> (x, True)`. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XTupleSections
GHCForeignImportPrim	Allow GHC primops, written in C--, to be imported into a Haskell file.
NPlusKPatterns	Support for patterns of the form `n + k`, where `k` is an integer literal. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XNPlusKPatterns
DoAndIfThenElse	Improve the layout rule when `if` expressions are used in a `do` block.
MultiWayIf	Enable support for multi-way `if`-expressions. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XMultiWayIf
LambdaCase	Enable support lambda-`case` expressions. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XLambdaCase
RebindableSyntax	Makes much of the Haskell sugar be desugared into calls to the function with a particular name that is in scope. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XRebindableSyntax
ExplicitForAll	Make `forall` a keyword in types, which can be used to give the generalisation explicitly. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XExplicitForAll
DatatypeContexts	Allow contexts to be put on datatypes, e.g. the `Eq a` in `data Eq a => Set a = NilSet \| ConsSet a (Set a)`. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDatatypeContexts
MonoLocalBinds	Local (`let` and `where`) bindings are monomorphic. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XMonoLocalBinds
DeriveFunctor	Enable `deriving` for the `Functor` class. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDeriveFunctor
DeriveTraversable	Enable `deriving` for the `Traversable` class. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDeriveTraversable
DeriveFoldable	Enable `deriving` for the `Foldable` class. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDeriveFoldable
NondecreasingIndentation	Enable non-decreasing indentation for `do` blocks. https://haskell.org/ghc/docs/latest/html/users_guide/bugs.html#context-free-syntax
SafeImports	Allow imports to be qualified with a safe keyword that requires the imported module be trusted as according to the Safe Haskell definition of trust. import safe Network.Socket https://haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#safe-imports
Safe	Compile a module in the Safe, Safe Haskell mode -- a restricted form of the Haskell language to ensure type safety. https://www.haskell.org/ghc/docs/latest/html/users_guide/safe_haskell.html#ghc-flag--XSafe
Trustworthy	Compile a module in the Trustworthy, Safe Haskell mode -- no restrictions apply but the module is marked as trusted as long as the package the module resides in is trusted. https://www.haskell.org/ghc/docs/latest/html/users_guide/safe_haskell.html#ghc-flag--XTrustworthy
Unsafe	Compile a module in the Unsafe, Safe Haskell mode so that modules compiled using Safe, Safe Haskell mode can't import it. https://www.haskell.org/ghc/docs/latest/html/users_guide/safe_haskell.html#ghc-flag--XUnsafe
ConstraintKinds	Allow type classimplicit parameterequality constraints to be used as types with the special kind constraint. Also generalise the `(ctxt => ty)` syntax so that any type of kind constraint can occur before the arrow. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XConstraintKinds
PolyKinds	Enable kind polymorphism. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XPolyKinds
DataKinds	Enable datatype promotion. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDataKinds
ParallelArrays	Enable parallel arrays syntax (`[:`, `:]`) for Data Parallel Haskell. http://www.haskell.org/haskellwiki/GHC/Data_Parallel_Haskell
RoleAnnotations	Enable explicit role annotations, like in (`type role Foo representational representational`). https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XRoleAnnotations
OverloadedLists	Enable overloading of list literals, arithmetic sequences and list patterns using the `IsList` type class. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XOverloadedLists
EmptyCase	Enable case expressions that have no alternatives. Also applies to lambda-case expressions if they are enabled. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XEmptyCase
AutoDeriveTypeable	(deprecated) Deprecated in favour of `DeriveDataTypeable`. Old description: Triggers the generation of derived `Typeable` instances for every datatype and type class declaration. https://haskell.org/ghc/docs/7.8.4/html/users_guide/deriving.html#auto-derive-typeable
NegativeLiterals	Desugars negative literals directly (without using negate). https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XNegativeLiterals
BinaryLiterals	Allow the use of binary integer literal syntax (e.g. `0b11001001` to denote `201`). https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XBinaryLiterals
NumDecimals	Allow the use of floating literal syntax for all instances of `Num`, including `Int` and `Integer`. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XNumDecimals
NullaryTypeClasses	Enable support for type classes with no type parameter. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XNullaryTypeClasses
ExplicitNamespaces	Enable explicit namespaces in module import/export lists. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XExplicitNamespaces
AllowAmbiguousTypes	Allow the user to write ambiguous types, and the type inference engine to infer them. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XAllowAmbiguousTypes
JavaScriptFFI	Enable `foreign import javascript`.
PatternSynonyms	Allow giving names to and abstracting over patterns. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XPatternSynonyms
PartialTypeSignatures	Allow anonymous placeholders (underscore) inside type signatures. The type inference engine will generate a message describing the type inferred at the hole's location. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XPartialTypeSignatures
NamedWildCards	Allow named placeholders written with a leading underscore inside type signatures. Wildcards with the same name unify to the same type. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XNamedWildCards
DeriveAnyClass	Enable `deriving` for any class. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDeriveAnyClass
DeriveLift	Enable `deriving` for the `Lift` class. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XDeriveLift
StaticPointers	Enable support for 'static pointers' (and the `static` keyword) to refer to globally stable names, even across different programs. https://www.haskell.org/ghc/docs/latest/html/users_guide/glasgow_exts.html#ghc-flag--XStaticPointers
StrictData	Switches data type declarations to be strict by default (as if they had a bang using `BangPatterns`), and allow opt-in field laziness using `~`. https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/glasgow_exts.html#ghc-flag--XStrictData
Strict	Switches all pattern bindings to be strict by default (as if they had a bang using `BangPatterns`), ordinary patterns are recovered using `~`. Implies `StrictData`. https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/glasgow_exts.html#ghc-flag--XStrict
ApplicativeDo	Allows `do`-notation for types that are `Applicative` as well as `Monad`. When enabled, desugaring `do` notation tries to use `(*)` and `fmap` and `join` as far as possible.
DuplicateRecordFields	Allow records to use duplicated field labels for accessors.
TypeApplications	Enable explicit type applications with the syntax `id @Int`.
TypeInType	Dissolve the distinction between types and kinds, allowing the compiler to reason about kind equality and therefore enabling GADTs to be promoted to the type-level.
UndecidableSuperClasses	Allow recursive (and therefore undecideable) super-class relationships.
MonadFailDesugaring	A temporary extension to help library authors check if their code will compile with the new planned desugaring of fail.
TemplateHaskellQuotes	A subset of `TemplateHaskell` including only quoting.
OverloadedLabels	Allows use of the `#label` syntax.
TypeFamilyDependencies	Allow functional dependency annotations on type families to declare them as injective.
DerivingStrategies	Allow multiple `deriving` clauses, each optionally qualified with a strategy.
UnboxedSums	Enable the use of unboxed sum syntax.
HexFloatLiterals	Allow use of hexadecimal literal notation for floating-point values.

Instances

Bounded KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods minBound :: KnownExtension Source # maxBound :: KnownExtension Source #
Enum KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods succ :: KnownExtension -> KnownExtension Source # pred :: KnownExtension -> KnownExtension Source # toEnum :: Int -> KnownExtension Source # fromEnum :: KnownExtension -> Int Source # enumFrom :: KnownExtension -> [KnownExtension] Source # enumFromThen :: KnownExtension -> KnownExtension -> [KnownExtension] Source # enumFromTo :: KnownExtension -> KnownExtension -> [KnownExtension] Source # enumFromThenTo :: KnownExtension -> KnownExtension -> KnownExtension -> [KnownExtension] Source #
Eq KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods (==) :: KnownExtension -> KnownExtension -> Bool # (/=) :: KnownExtension -> KnownExtension -> Bool #
Data KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> KnownExtension -> c KnownExtension Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c KnownExtension Source # toConstr :: KnownExtension -> Constr Source # dataTypeOf :: KnownExtension -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c KnownExtension) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c KnownExtension) Source # gmapT :: (forall b. Data b => b -> b) -> KnownExtension -> KnownExtension Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> KnownExtension -> r Source # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> KnownExtension -> r Source # gmapQ :: (forall d. Data d => d -> u) -> KnownExtension -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> KnownExtension -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> KnownExtension -> m KnownExtension Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> KnownExtension -> m KnownExtension Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> KnownExtension -> m KnownExtension Source #
Ord KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods compare :: KnownExtension -> KnownExtension -> Ordering # (<) :: KnownExtension -> KnownExtension -> Bool # (<=) :: KnownExtension -> KnownExtension -> Bool # (>) :: KnownExtension -> KnownExtension -> Bool # (>=) :: KnownExtension -> KnownExtension -> Bool # max :: KnownExtension -> KnownExtension -> KnownExtension # min :: KnownExtension -> KnownExtension -> KnownExtension #
Read KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods readsPrec :: Int -> ReadS KnownExtension Source # readList :: ReadS [KnownExtension] Source # readPrec :: ReadPrec KnownExtension Source # readListPrec :: ReadPrec [KnownExtension] Source #
Show KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods showsPrec :: Int -> KnownExtension -> ShowS Source # show :: KnownExtension -> String Source # showList :: [KnownExtension] -> ShowS Source #
Generic KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Associated Types type Rep KnownExtension :: * -> * Source # Methods from :: KnownExtension -> Rep KnownExtension x Source # to :: Rep KnownExtension x -> KnownExtension Source #
NFData KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods rnf :: KnownExtension -> () Source #
Binary KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods put :: KnownExtension -> Put Source # get :: Get KnownExtension Source # putList :: [KnownExtension] -> Put Source #
Pretty KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods pretty :: KnownExtension -> Doc Source #
Text KnownExtension Source #
Instance details Defined in Language.Haskell.Extension Methods disp :: KnownExtension -> Doc Source # parse :: ReadP r KnownExtension Source #
type Rep KnownExtension Source #
Instance details Defined in Language.Haskell.Extension type Rep KnownExtension = D1 (MetaData "KnownExtension" "Language.Haskell.Extension" "Cabal-2.2.0.1" False) ((((((C1 (MetaCons "OverlappingInstances" PrefixI False) (U1 :: * -> ) :+: (C1 (MetaCons "UndecidableInstances" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "IncoherentInstances" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "DoRec" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "RecursiveDo" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "ParallelListComp" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "MultiParamTypeClasses" PrefixI False) (U1 :: -> )))) :+: (((C1 (MetaCons "MonomorphismRestriction" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "FunctionalDependencies" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "Rank2Types" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "RankNTypes" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "PolymorphicComponents" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "ExistentialQuantification" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "ScopedTypeVariables" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "PatternSignatures" PrefixI False) (U1 :: -> ))))) :+: (((C1 (MetaCons "ImplicitParams" PrefixI False) (U1 :: -> ) :+: (C1 (MetaCons "FlexibleContexts" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "FlexibleInstances" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "EmptyDataDecls" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "CPP" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "KindSignatures" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "BangPatterns" PrefixI False) (U1 :: -> )))) :+: (((C1 (MetaCons "TypeSynonymInstances" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "TemplateHaskell" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "ForeignFunctionInterface" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "Arrows" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "Generics" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "ImplicitPrelude" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "NamedFieldPuns" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "PatternGuards" PrefixI False) (U1 :: -> )))))) :+: ((((C1 (MetaCons "GeneralizedNewtypeDeriving" PrefixI False) (U1 :: -> ) :+: (C1 (MetaCons "ExtensibleRecords" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "RestrictedTypeSynonyms" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "HereDocuments" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "MagicHash" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "TypeFamilies" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "StandaloneDeriving" PrefixI False) (U1 :: -> )))) :+: (((C1 (MetaCons "UnicodeSyntax" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "UnliftedFFITypes" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "InterruptibleFFI" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "CApiFFI" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "LiberalTypeSynonyms" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "TypeOperators" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "RecordWildCards" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "RecordPuns" PrefixI False) (U1 :: -> ))))) :+: ((((C1 (MetaCons "DisambiguateRecordFields" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "TraditionalRecordSyntax" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "OverloadedStrings" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "GADTs" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "GADTSyntax" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "MonoPatBinds" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "RelaxedPolyRec" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "ExtendedDefaultRules" PrefixI False) (U1 :: -> )))) :+: (((C1 (MetaCons "UnboxedTuples" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "DeriveDataTypeable" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "DeriveGeneric" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "DefaultSignatures" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "InstanceSigs" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "ConstrainedClassMethods" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "PackageImports" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "ImpredicativeTypes" PrefixI False) (U1 :: -> ))))))) :+: (((((C1 (MetaCons "NewQualifiedOperators" PrefixI False) (U1 :: -> ) :+: (C1 (MetaCons "PostfixOperators" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "QuasiQuotes" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "TransformListComp" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "MonadComprehensions" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "ViewPatterns" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "XmlSyntax" PrefixI False) (U1 :: -> )))) :+: (((C1 (MetaCons "RegularPatterns" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "TupleSections" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "GHCForeignImportPrim" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "NPlusKPatterns" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "DoAndIfThenElse" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "MultiWayIf" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "LambdaCase" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "RebindableSyntax" PrefixI False) (U1 :: -> ))))) :+: (((C1 (MetaCons "ExplicitForAll" PrefixI False) (U1 :: -> ) :+: (C1 (MetaCons "DatatypeContexts" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "MonoLocalBinds" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "DeriveFunctor" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "DeriveTraversable" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "DeriveFoldable" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "NondecreasingIndentation" PrefixI False) (U1 :: -> )))) :+: (((C1 (MetaCons "SafeImports" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "Safe" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "Trustworthy" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "Unsafe" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "ConstraintKinds" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "PolyKinds" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "DataKinds" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "ParallelArrays" PrefixI False) (U1 :: -> )))))) :+: ((((C1 (MetaCons "RoleAnnotations" PrefixI False) (U1 :: -> ) :+: (C1 (MetaCons "OverloadedLists" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "EmptyCase" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "AutoDeriveTypeable" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "NegativeLiterals" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "BinaryLiterals" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "NumDecimals" PrefixI False) (U1 :: -> )))) :+: (((C1 (MetaCons "NullaryTypeClasses" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "ExplicitNamespaces" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "AllowAmbiguousTypes" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "JavaScriptFFI" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "PatternSynonyms" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "PartialTypeSignatures" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "NamedWildCards" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "DeriveAnyClass" PrefixI False) (U1 :: -> ))))) :+: ((((C1 (MetaCons "DeriveLift" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "StaticPointers" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "StrictData" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "Strict" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "ApplicativeDo" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "DuplicateRecordFields" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "TypeApplications" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "TypeInType" PrefixI False) (U1 :: -> )))) :+: (((C1 (MetaCons "UndecidableSuperClasses" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "MonadFailDesugaring" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "TemplateHaskellQuotes" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "OverloadedLabels" PrefixI False) (U1 :: -> ))) :+: ((C1 (MetaCons "TypeFamilyDependencies" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "DerivingStrategies" PrefixI False) (U1 :: -> )) :+: (C1 (MetaCons "UnboxedSums" PrefixI False) (U1 :: -> ) :+: C1 (MetaCons "HexFloatLiterals" PrefixI False) (U1 :: -> *))))))))

knownExtensions :: [KnownExtension] Source #

Deprecated: KnownExtension is an instance of Enum and Bounded, use those instead. This symbol will be removed in Cabal-3.0 (est. Oct 2018).

deprecatedExtensions :: [(Extension, Maybe Extension)] Source #

Extensions that have been deprecated, possibly paired with another extension that replaces it.

classifyExtension :: String -> Extension Source #