Safe Haskell	None
Language	GHC2021

GHC.Hs.Lit

Contents

Orphan instances

Description

Source-language literals

Synopsis

module Language.Haskell.Syntax.Lit
convertLit :: forall (p :: Pass) (p' :: Pass). XXLit (GhcPass p) ~ DataConCantHappen => HsLit (GhcPass p) -> HsLit (GhcPass p')
hsLitNeedsParens :: forall (x :: Pass). IsPass x => PprPrec -> HsLit (GhcPass x) -> Bool
hsOverLitNeedsParens :: PprPrec -> HsOverLit x -> Bool
negateOverLitVal :: OverLitVal -> OverLitVal
overLitType :: HsOverLit GhcTc -> Type
pmPprHsLit :: forall (p :: Pass). IsPass p => HsLit (GhcPass p) -> SDoc
pprXOverLit :: forall (p :: Pass). GhcPass p -> XOverLit (GhcPass p) -> SDoc
data HsLitTc
- = HsInteger SourceText Integer Type
- | HsRat FractionalLit Type
data OverLitRn = OverLitRn {
- ol_rebindable :: Bool
- ol_from_fun :: LIdP GhcRn
}
data OverLitTc = OverLitTc {
- ol_rebindable :: Bool
- ol_witness :: HsExpr GhcTc
- ol_type :: Type
}

Documentation

module Language.Haskell.Syntax.Lit

convertLit :: forall (p :: Pass) (p' :: Pass). XXLit (GhcPass p) ~ DataConCantHappen => HsLit (GhcPass p) -> HsLit (GhcPass p') Source #

Convert a literal from one index type to another. The constraint XXLit (GhcPass p)~DataConCantHappen means that once the XLit constructor is inhabited, we can no longer go back to the case where its not. In practice it just means you can't just convertLit to go from (HsLit GhcTc) -> (HsLit GhcPs/GhcRn), while all other conversions are fine.

hsLitNeedsParens :: forall (x :: Pass). IsPass x => PprPrec -> HsLit (GhcPass x) -> Bool Source #

hsLitNeedsParens p l returns True if a literal l needs to be parenthesized under precedence p.

See Note [Printing of literals in Core] in GHC.Types.Literal for the reasoning.

hsOverLitNeedsParens :: PprPrec -> HsOverLit x -> Bool Source #

hsOverLitNeedsParens p ol returns True if an overloaded literal ol needs to be parenthesized under precedence p.

negateOverLitVal :: OverLitVal -> OverLitVal Source #

overLitType :: HsOverLit GhcTc -> Type Source #

pmPprHsLit :: forall (p :: Pass). IsPass p => HsLit (GhcPass p) -> SDoc Source #

pmPprHsLit pretty prints literals and is used when pretty printing pattern match warnings. All are printed the same (i.e., without hashes if they are primitive and not wrapped in constructors if they are boxed). This happens mainly for too reasons: * We do not want to expose their internal representation * The warnings become too messy

pprXOverLit :: forall (p :: Pass). GhcPass p -> XOverLit (GhcPass p) -> SDoc Source #

data HsLitTc Source #

Constructors

HsInteger SourceText Integer Type	Genuinely an integer; arises only from TRANSLATION (overloaded literals are done with HsOverLit)
HsRat FractionalLit Type	Genuinely a rational; arises only from TRANSLATION (overloaded literals are done with HsOverLit)

Instances

Instances details

Data HsLitTc Source #
Instance details Defined in GHC.Hs.Instances Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> HsLitTc -> c HsLitTc # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c HsLitTc # toConstr :: HsLitTc -> Constr # dataTypeOf :: HsLitTc -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c HsLitTc) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c HsLitTc) # gmapT :: (forall b. Data b => b -> b) -> HsLitTc -> HsLitTc # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HsLitTc -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HsLitTc -> r # gmapQ :: (forall d. Data d => d -> u) -> HsLitTc -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> HsLitTc -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> HsLitTc -> m HsLitTc # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HsLitTc -> m HsLitTc # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HsLitTc -> m HsLitTc #
Eq HsLitTc Source #
Instance details Defined in GHC.Hs.Lit Methods (==) :: HsLitTc -> HsLitTc -> Bool # (/=) :: HsLitTc -> HsLitTc -> Bool #

data OverLitRn Source #

Constructors

OverLitRn
Fields ol_rebindable :: Bool ol_from_fun :: LIdP GhcRn

Instances

Instances details

Data OverLitRn Source #

Instance details

Defined in GHC.Hs.Instances

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> OverLitRn -> c OverLitRn #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c OverLitRn #

toConstr :: OverLitRn -> Constr #

dataTypeOf :: OverLitRn -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c OverLitRn) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c OverLitRn) #

gmapT :: (forall b. Data b => b -> b) -> OverLitRn -> OverLitRn #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> OverLitRn -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> OverLitRn -> r #

gmapQ :: (forall d. Data d => d -> u) -> OverLitRn -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> OverLitRn -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> OverLitRn -> m OverLitRn #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> OverLitRn -> m OverLitRn #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> OverLitRn -> m OverLitRn #

data OverLitTc Source #

Constructors

OverLitTc
Fields ol_rebindable :: Bool ol_witness :: HsExpr GhcTc ol_type :: Type

Instances

Instances details

Data OverLitTc Source #

Instance details

Defined in GHC.Hs.Instances

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> OverLitTc -> c OverLitTc #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c OverLitTc #

toConstr :: OverLitTc -> Constr #

dataTypeOf :: OverLitTc -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c OverLitTc) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c OverLitTc) #

gmapT :: (forall b. Data b => b -> b) -> OverLitTc -> OverLitTc #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> OverLitTc -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> OverLitTc -> r #

gmapQ :: (forall d. Data d => d -> u) -> OverLitTc -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> OverLitTc -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> OverLitTc -> m OverLitTc #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> OverLitTc -> m OverLitTc #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> OverLitTc -> m OverLitTc #

Orphan instances

Outputable OverLitVal Source #
Instance details Methods ppr :: OverLitVal -> SDoc Source #
IsPass p => Outputable (HsLit (GhcPass p)) Source #
Instance details Methods ppr :: HsLit (GhcPass p) -> SDoc Source #
OutputableBndrId p => Outputable (HsOverLit (GhcPass p)) Source #
Instance details Methods ppr :: HsOverLit (GhcPass p) -> SDoc Source #
Eq (XXOverLit p) => Eq (HsOverLit p) Source #
Instance details Methods (==) :: HsOverLit p -> HsOverLit p -> Bool # (/=) :: HsOverLit p -> HsOverLit p -> Bool #
Ord (XXOverLit p) => Ord (HsOverLit p) Source #
Instance details Methods compare :: HsOverLit p -> HsOverLit p -> Ordering # (<) :: HsOverLit p -> HsOverLit p -> Bool # (<=) :: HsOverLit p -> HsOverLit p -> Bool # (>) :: HsOverLit p -> HsOverLit p -> Bool # (>=) :: HsOverLit p -> HsOverLit p -> Bool # max :: HsOverLit p -> HsOverLit p -> HsOverLit p # min :: HsOverLit p -> HsOverLit p -> HsOverLit p #