Safe Haskell	None
Language	GHC2021

GHC.Types.Name.Occurrence

Contents

The NameSpace type
- Construction
- Pretty Printing
The OccName type
The OccEnv type
The OccSet type
Dealing with main
Tidying up

Description

GHC uses several kinds of name internally:

OccName represents names as strings with just a little more information: the "namespace" that the name came from, e.g. the namespace of value, type constructors or data constructors
RdrName: see GHC.Types.Name.Reader
Name: see GHC.Types.Name
Id: see GHC.Types.Id
Var: see GHC.Types.Var

Synopsis

data NameSpace
tcName :: NameSpace
clsName :: NameSpace
tcClsName :: NameSpace
dataName :: NameSpace
varName :: NameSpace
fieldName :: FastString -> NameSpace
tvName :: NameSpace
srcDataName :: NameSpace
pprNameSpace :: NameSpace -> SDoc
pprNonVarNameSpace :: NameSpace -> SDoc
pprNameSpaceBrief :: NameSpace -> SDoc
data OccName
pprOccName :: IsLine doc => OccName -> doc
occNameMangledFS :: OccName -> FastString
mkOccName :: NameSpace -> String -> OccName
mkOccNameFS :: NameSpace -> FastString -> OccName
mkVarOcc :: String -> OccName
mkVarOccFS :: FastString -> OccName
mkRecFieldOcc :: FastString -> String -> OccName
mkRecFieldOccFS :: FastString -> FastString -> OccName
mkDataOcc :: String -> OccName
mkDataOccFS :: FastString -> OccName
mkTyVarOcc :: String -> OccName
mkTyVarOccFS :: FastString -> OccName
mkTcOcc :: String -> OccName
mkTcOccFS :: FastString -> OccName
mkClsOcc :: String -> OccName
mkClsOccFS :: FastString -> OccName
mkDFunOcc :: String -> Bool -> OccSet -> OccName
setOccNameSpace :: NameSpace -> OccName -> OccName
demoteOccName :: OccName -> Maybe OccName
demoteOccTvName :: OccName -> Maybe OccName
promoteOccName :: OccName -> Maybe OccName
varToRecFieldOcc :: HasDebugCallStack => FastString -> OccName -> OccName
recFieldToVarOcc :: HasDebugCallStack => OccName -> OccName
class HasOccName name where
- occName :: name -> OccName
isDerivedOccName :: OccName -> Bool
mkDataConWrapperOcc :: OccName -> OccName
mkWorkerOcc :: OccName -> OccName
mkMatcherOcc :: OccName -> OccName
mkBuilderOcc :: OccName -> OccName
mkDefaultMethodOcc :: OccName -> OccName
isDefaultMethodOcc :: OccName -> Bool
isTypeableBindOcc :: OccName -> Bool
mkNewTyCoOcc :: OccName -> OccName
mkClassOpAuxOcc :: OccName -> OccName
mkCon2TagOcc :: OccName -> OccName
mkTag2ConOcc :: OccName -> OccName
mkMaxTagOcc :: OccName -> OccName
mkClassDataConOcc :: OccName -> OccName
mkDictOcc :: OccName -> OccName
mkIPOcc :: OccName -> OccName
mkSpecOcc :: OccName -> OccName
mkForeignExportOcc :: OccName -> OccName
mkRepEqOcc :: OccName -> OccName
mkGenR :: OccName -> OccName
mkGen1R :: OccName -> OccName
mkDataTOcc :: OccName -> OccName
mkDataCOcc :: OccName -> OccName
mkDataConWorkerOcc :: OccName -> OccName
mkSuperDictSelOcc :: Int -> OccName -> OccName
mkSuperDictAuxOcc :: Int -> OccName -> OccName
mkLocalOcc :: Unique -> OccName -> OccName
mkMethodOcc :: OccName -> OccName
mkInstTyTcOcc :: String -> OccSet -> OccName
mkInstTyCoOcc :: OccName -> OccName
mkEqPredCoOcc :: OccName -> OccName
mkTyConRepOcc :: OccName -> OccName
occNameFS :: OccName -> FastString
occNameString :: OccName -> String
occNameSpace :: OccName -> NameSpace
isVarOcc :: OccName -> Bool
isTvOcc :: OccName -> Bool
isTcOcc :: OccName -> Bool
isDataOcc :: OccName -> Bool
isDataSymOcc :: OccName -> Bool
isSymOcc :: OccName -> Bool
isValOcc :: OccName -> Bool
isFieldOcc :: OccName -> Bool
fieldOcc_maybe :: OccName -> Maybe FastString
parenSymOcc :: OccName -> SDoc -> SDoc
startsWithUnderscore :: OccName -> Bool
isUnderscore :: OccName -> Bool
isTcClsNameSpace :: NameSpace -> Bool
isTvNameSpace :: NameSpace -> Bool
isDataConNameSpace :: NameSpace -> Bool
isVarNameSpace :: NameSpace -> Bool
isValNameSpace :: NameSpace -> Bool
isFieldNameSpace :: NameSpace -> Bool
isTermVarOrFieldNameSpace :: NameSpace -> Bool
data OccEnv a
emptyOccEnv :: OccEnv a
unitOccEnv :: OccName -> a -> OccEnv a
extendOccEnv :: OccEnv a -> OccName -> a -> OccEnv a
mapOccEnv :: (a -> b) -> OccEnv a -> OccEnv b
strictMapOccEnv :: (a -> b) -> OccEnv a -> OccEnv b
mapMaybeOccEnv :: (a -> Maybe b) -> OccEnv a -> OccEnv b
lookupOccEnv :: OccEnv a -> OccName -> Maybe a
lookupOccEnv_AllNameSpaces :: OccEnv a -> OccName -> [a]
lookupOccEnv_WithFields :: OccEnv a -> OccName -> [a]
lookupFieldsOccEnv :: OccEnv a -> FastString -> [a]
mkOccEnv :: [(OccName, a)] -> OccEnv a
mkOccEnv_C :: (a -> a -> a) -> [(OccName, a)] -> OccEnv a
extendOccEnvList :: OccEnv a -> [(OccName, a)] -> OccEnv a
elemOccEnv :: OccName -> OccEnv a -> Bool
nonDetOccEnvElts :: OccEnv a -> [a]
nonDetFoldOccEnv :: (a -> b -> b) -> b -> OccEnv a -> b
plusOccEnv :: OccEnv a -> OccEnv a -> OccEnv a
plusOccEnv_C :: (a -> a -> a) -> OccEnv a -> OccEnv a -> OccEnv a
extendOccEnv_Acc :: (a -> b -> b) -> (a -> b) -> OccEnv b -> OccName -> a -> OccEnv b
filterOccEnv :: (a -> Bool) -> OccEnv a -> OccEnv a
delListFromOccEnv :: OccEnv a -> [OccName] -> OccEnv a
delFromOccEnv :: OccEnv a -> OccName -> OccEnv a
alterOccEnv :: (Maybe a -> Maybe a) -> OccEnv a -> OccName -> OccEnv a
minusOccEnv :: OccEnv a -> OccEnv b -> OccEnv a
minusOccEnv_C :: (a -> b -> Maybe a) -> OccEnv a -> OccEnv b -> OccEnv a
minusOccEnv_C_Ns :: (UniqFM NameSpace a -> UniqFM NameSpace b -> UniqFM NameSpace a) -> OccEnv a -> OccEnv b -> OccEnv a
pprOccEnv :: (a -> SDoc) -> OccEnv a -> SDoc
forceOccEnv :: (a -> ()) -> OccEnv a -> ()
intersectOccEnv_C :: (a -> b -> c) -> OccEnv a -> OccEnv b -> OccEnv c
data OccSet
emptyOccSet :: OccSet
unitOccSet :: OccName -> OccSet
mkOccSet :: [OccName] -> OccSet
extendOccSet :: OccSet -> OccName -> OccSet
extendOccSetList :: OccSet -> [OccName] -> OccSet
unionOccSets :: OccSet -> OccSet -> OccSet
unionManyOccSets :: [OccSet] -> OccSet
elemOccSet :: OccName -> OccSet -> Bool
isEmptyOccSet :: OccSet -> Bool
mainOcc :: OccName
ppMainFn :: OccName -> SDoc
type TidyOccEnv = UniqFM FastString Int
emptyTidyOccEnv :: TidyOccEnv
initTidyOccEnv :: [OccName] -> TidyOccEnv
trimTidyOccEnv :: TidyOccEnv -> [OccName] -> TidyOccEnv
tidyOccName :: TidyOccEnv -> OccName -> (TidyOccEnv, OccName)
avoidClashesOccEnv :: TidyOccEnv -> [OccName] -> TidyOccEnv
delTidyOccEnvList :: TidyOccEnv -> [OccName] -> TidyOccEnv
type FastStringEnv a = UniqFM FastString a
emptyFsEnv :: FastStringEnv a
lookupFsEnv :: FastStringEnv a -> FastString -> Maybe a
extendFsEnv :: FastStringEnv a -> FastString -> a -> FastStringEnv a
mkFsEnv :: [(FastString, a)] -> FastStringEnv a

The `NameSpace` type

data NameSpace Source #

Instances

Instances details

NFData NameSpace Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods rnf :: NameSpace -> () Source #
Uniquable NameSpace Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods getUnique :: NameSpace -> Unique Source #
Binary NameSpace Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods put_ :: WriteBinHandle -> NameSpace -> IO () Source # put :: WriteBinHandle -> NameSpace -> IO (Bin NameSpace) Source # get :: ReadBinHandle -> IO NameSpace Source #
Eq NameSpace Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods (==) :: NameSpace -> NameSpace -> Bool # (/=) :: NameSpace -> NameSpace -> Bool #
Ord NameSpace Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods compare :: NameSpace -> NameSpace -> Ordering # (<) :: NameSpace -> NameSpace -> Bool # (<=) :: NameSpace -> NameSpace -> Bool # (>) :: NameSpace -> NameSpace -> Bool # (>=) :: NameSpace -> NameSpace -> Bool # max :: NameSpace -> NameSpace -> NameSpace # min :: NameSpace -> NameSpace -> NameSpace #

Construction

tcName :: NameSpace Source #

clsName :: NameSpace Source #

tcClsName :: NameSpace Source #

dataName :: NameSpace Source #

varName :: NameSpace Source #

fieldName :: FastString -> NameSpace Source #

tvName :: NameSpace Source #

srcDataName :: NameSpace Source #

Pretty Printing

pprNameSpace :: NameSpace -> SDoc Source #

pprNonVarNameSpace :: NameSpace -> SDoc Source #

pprNameSpaceBrief :: NameSpace -> SDoc Source #

The `OccName` type

data OccName Source #

Occurrence Name

In this context that means: "classified (i.e. as a type name, value name, etc) but not qualified and not yet resolved"

Instances

Instances details

NFData OccName Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods rnf :: OccName -> () Source #
HasOccName OccName Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods occName :: OccName -> OccName Source #
Binary OccName Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods put_ :: WriteBinHandle -> OccName -> IO () Source # put :: WriteBinHandle -> OccName -> IO (Bin OccName) Source # get :: ReadBinHandle -> IO OccName Source #
Outputable OccName Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods ppr :: OccName -> SDoc Source #
OutputableBndr OccName Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods pprBndr :: BindingSite -> OccName -> SDoc Source # pprPrefixOcc :: OccName -> SDoc Source # pprInfixOcc :: OccName -> SDoc Source # bndrIsJoin_maybe :: OccName -> JoinPointHood Source #
Data OccName Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> OccName -> c OccName # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c OccName # toConstr :: OccName -> Constr # dataTypeOf :: OccName -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c OccName) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c OccName) # gmapT :: (forall b. Data b => b -> b) -> OccName -> OccName # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> OccName -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> OccName -> r # gmapQ :: (forall d. Data d => d -> u) -> OccName -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> OccName -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> OccName -> m OccName # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> OccName -> m OccName # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> OccName -> m OccName #
Eq OccName Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods (==) :: OccName -> OccName -> Bool # (/=) :: OccName -> OccName -> Bool #
Ord OccName Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods compare :: OccName -> OccName -> Ordering # (<) :: OccName -> OccName -> Bool # (<=) :: OccName -> OccName -> Bool # (>) :: OccName -> OccName -> Bool # (>=) :: OccName -> OccName -> Bool # max :: OccName -> OccName -> OccName # min :: OccName -> OccName -> OccName #

pprOccName :: IsLine doc => OccName -> doc Source #

occNameMangledFS :: OccName -> FastString Source #

Mangle field names to avoid duplicate symbols.

See Note [Mangling OccNames].

Construction

mkOccName :: NameSpace -> String -> OccName Source #

mkOccNameFS :: NameSpace -> FastString -> OccName Source #

mkVarOcc :: String -> OccName Source #

mkVarOccFS :: FastString -> OccName Source #

mkRecFieldOcc :: FastString -> String -> OccName Source #

mkRecFieldOccFS :: FastString -> FastString -> OccName Source #

mkDataOcc :: String -> OccName Source #

mkDataOccFS :: FastString -> OccName Source #

mkTyVarOcc :: String -> OccName Source #

mkTyVarOccFS :: FastString -> OccName Source #

mkTcOcc :: String -> OccName Source #

mkTcOccFS :: FastString -> OccName Source #

mkClsOcc :: String -> OccName Source #

mkClsOccFS :: FastString -> OccName Source #

mkDFunOcc Source #

Arguments

:: String	Typically the class and type glommed together e.g. `OrdMaybe`. Only used in debug mode, for extra clarity
-> Bool	Is this a hs-boot instance DFun?
-> OccSet	avoid these Occs
-> OccName	E.g. `$f3OrdMaybe`

setOccNameSpace :: NameSpace -> OccName -> OccName Source #

demoteOccName :: OccName -> Maybe OccName Source #

demoteOccTvName :: OccName -> Maybe OccName Source #

promoteOccName :: OccName -> Maybe OccName Source #

varToRecFieldOcc :: HasDebugCallStack => FastString -> OccName -> OccName Source #

recFieldToVarOcc :: HasDebugCallStack => OccName -> OccName Source #

class HasOccName name where Source #

Other names in the compiler add additional information to an OccName. This class provides a consistent way to access the underlying OccName.

Methods

occName :: name -> OccName Source #

Instances

Instances details

HasOccName IfaceClassOp Source #
Instance details Defined in GHC.Iface.Syntax Methods occName :: IfaceClassOp -> OccName Source #
HasOccName IfaceConDecl Source #
Instance details Defined in GHC.Iface.Syntax Methods occName :: IfaceConDecl -> OccName Source #
HasOccName IfaceDecl Source #
Instance details Defined in GHC.Iface.Syntax Methods occName :: IfaceDecl -> OccName Source #
HasOccName HoleFitCandidate Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods occName :: HoleFitCandidate -> OccName Source #
HasOccName TcBinder Source #
Instance details Defined in GHC.Tc.Types.BasicTypes Methods occName :: TcBinder -> OccName Source #
HasOccName FieldLabel Source #
Instance details Defined in GHC.Types.FieldLabel Methods occName :: FieldLabel -> OccName Source #
HasOccName Name Source #
Instance details Defined in GHC.Types.Name Methods occName :: Name -> OccName Source #
HasOccName OccName Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods occName :: OccName -> OccName Source #
HasOccName RdrName Source #
Instance details Defined in GHC.Types.Name.Reader Methods occName :: RdrName -> OccName Source #
HasOccName Var Source #
Instance details Defined in GHC.Types.Var Methods occName :: Var -> OccName Source #
HasOccName (GlobalRdrEltX info) Source #
Instance details Defined in GHC.Types.Name.Reader Methods occName :: GlobalRdrEltX info -> OccName Source #
(HasOccName (IdP (GhcPass p)), OutputableBndrId p) => HasOccName (IEWrappedName (GhcPass p)) Source #
Instance details Defined in GHC.Hs.ImpExp Methods occName :: IEWrappedName (GhcPass p) -> OccName Source #

Derived `OccName`s

isDerivedOccName :: OccName -> Bool Source #

Test for definitions internally generated by GHC. This predicate is used to suppress printing of internal definitions in some debug prints

mkDataConWrapperOcc :: OccName -> OccName Source #

mkWorkerOcc :: OccName -> OccName Source #

mkMatcherOcc :: OccName -> OccName Source #

mkBuilderOcc :: OccName -> OccName Source #

mkDefaultMethodOcc :: OccName -> OccName Source #

isDefaultMethodOcc :: OccName -> Bool Source #

isTypeableBindOcc :: OccName -> Bool Source #

Is an OccName one of a Typeable TyCon or Module binding? This is needed as these bindings are renamed differently. See Note [Grand plan for Typeable] in GHC.Tc.Instance.Typeable.

mkNewTyCoOcc :: OccName -> OccName Source #

mkClassOpAuxOcc :: OccName -> OccName Source #

mkCon2TagOcc :: OccName -> OccName Source #

mkTag2ConOcc :: OccName -> OccName Source #

mkMaxTagOcc :: OccName -> OccName Source #

mkClassDataConOcc :: OccName -> OccName Source #

mkDictOcc :: OccName -> OccName Source #

mkIPOcc :: OccName -> OccName Source #

mkSpecOcc :: OccName -> OccName Source #

mkForeignExportOcc :: OccName -> OccName Source #

mkRepEqOcc :: OccName -> OccName Source #

mkGenR :: OccName -> OccName Source #

mkGen1R :: OccName -> OccName Source #

mkDataTOcc :: OccName -> OccName Source #

mkDataCOcc :: OccName -> OccName Source #

mkDataConWorkerOcc :: OccName -> OccName Source #

mkSuperDictSelOcc Source #

Arguments

:: Int	Index of superclass, e.g. 3
-> OccName	Class, e.g. `Ord`
-> OccName	Derived `Occname`, e.g. `$p3Ord`

mkSuperDictAuxOcc :: Int -> OccName -> OccName Source #

mkLocalOcc Source #

Arguments

:: Unique	Unique to combine with the `OccName`
-> OccName	Local name, e.g. `sat`
-> OccName	Nice unique version, e.g. `$L23sat`

mkMethodOcc :: OccName -> OccName Source #

mkInstTyTcOcc Source #

Arguments

:: String	Family name, e.g. `Map`
-> OccSet	avoid these Occs
-> OccName	R:Map

Derive a name for the representation type constructor of a data/newtype instance.

mkInstTyCoOcc :: OccName -> OccName Source #

mkEqPredCoOcc :: OccName -> OccName Source #

mkTyConRepOcc :: OccName -> OccName Source #

Deconstruction

occNameFS :: OccName -> FastString Source #

occNameString :: OccName -> String Source #

occNameSpace :: OccName -> NameSpace Source #

isVarOcc :: OccName -> Bool Source #

isTvOcc :: OccName -> Bool Source #

isTcOcc :: OccName -> Bool Source #

isDataOcc :: OccName -> Bool Source #

isDataSymOcc :: OccName -> Bool Source #

Test if the OccName is a data constructor that starts with a symbol (e.g. :, or [])

isSymOcc :: OccName -> Bool Source #

Test if the OccName is that for any operator (whether it is a data constructor or variable or whatever)

isValOcc :: OccName -> Bool Source #

Value OccNamess are those that are either in the variable, field name or data constructor namespaces

isFieldOcc :: OccName -> Bool Source #

fieldOcc_maybe :: OccName -> Maybe FastString Source #

parenSymOcc :: OccName -> SDoc -> SDoc Source #

Wrap parens around an operator

startsWithUnderscore :: OccName -> Bool Source #

Haskell 98 encourages compilers to suppress warnings about unused names in a pattern if they start with _: this implements that test

isUnderscore :: OccName -> Bool Source #

isTcClsNameSpace :: NameSpace -> Bool Source #

isTvNameSpace :: NameSpace -> Bool Source #

isDataConNameSpace :: NameSpace -> Bool Source #

isVarNameSpace :: NameSpace -> Bool Source #

isValNameSpace :: NameSpace -> Bool Source #

isFieldNameSpace :: NameSpace -> Bool Source #

isTermVarOrFieldNameSpace :: NameSpace -> Bool Source #

Is this a term variable or field name namespace?

The `OccEnv` type

data OccEnv a Source #

A map keyed on OccName. See Note [OccEnv].

Instances

Instances details

Functor OccEnv Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods fmap :: (a -> b) -> OccEnv a -> OccEnv b # (<$) :: a -> OccEnv b -> OccEnv a #
NFData a => NFData (OccEnv a) Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods rnf :: OccEnv a -> () Source #
Outputable a => Outputable (OccEnv a) Source #
Instance details Defined in GHC.Types.Name.Occurrence Methods ppr :: OccEnv a -> SDoc Source #

emptyOccEnv :: OccEnv a Source #

The empty OccEnv.

unitOccEnv :: OccName -> a -> OccEnv a Source #

A singleton OccEnv.

extendOccEnv :: OccEnv a -> OccName -> a -> OccEnv a Source #

Add a single element to an OccEnv.

mapOccEnv :: (a -> b) -> OccEnv a -> OccEnv b Source #

Map over an OccEnv (Functor instance).

strictMapOccEnv :: (a -> b) -> OccEnv a -> OccEnv b Source #

Map over an OccEnv strictly.

mapMaybeOccEnv :: (a -> Maybe b) -> OccEnv a -> OccEnv b Source #

mapMaybe for b OccEnv.

lookupOccEnv :: OccEnv a -> OccName -> Maybe a Source #

Look an element up in an OccEnv.

lookupOccEnv_AllNameSpaces :: OccEnv a -> OccName -> [a] Source #

Lookup an element in an OccEnv, ignoring NameSpaces entirely.

lookupOccEnv_WithFields :: OccEnv a -> OccName -> [a] Source #

Lookup an element in an OccEnv, looking in the record field namespace for a variable.

lookupFieldsOccEnv :: OccEnv a -> FastString -> [a] Source #

Look up all the record fields that match with the given FastString in an OccEnv.

mkOccEnv :: [(OccName, a)] -> OccEnv a Source #

Create an OccEnv from a list.

OccNames later on in the list override earlier OccNames.

mkOccEnv_C Source #

Arguments

:: (a -> a -> a)	old -> new -> result
-> [(OccName, a)]
-> OccEnv a

Create an OccEnv from a list, combining different values with the same OccName using the combining function.

extendOccEnvList :: OccEnv a -> [(OccName, a)] -> OccEnv a Source #

Extend an OccEnv by a list.

OccNames later on in the list override earlier OccNames.

elemOccEnv :: OccName -> OccEnv a -> Bool Source #

Compute whether there is a value keyed by the given OccName.

nonDetOccEnvElts :: OccEnv a -> [a] Source #

Obtain the elements of an OccEnv.

The resulting order is non-deterministic.

nonDetFoldOccEnv :: (a -> b -> b) -> b -> OccEnv a -> b Source #

Fold over an OccEnv. Non-deterministic, unless the folding function is commutative (i.e. a1 f ( a2 f b ) == a2 f ( a1 f b ) for all a1, a2, b).

plusOccEnv :: OccEnv a -> OccEnv a -> OccEnv a Source #

Union of two OccEnvs, right-biased.

plusOccEnv_C :: (a -> a -> a) -> OccEnv a -> OccEnv a -> OccEnv a Source #

Union of two OccEnvs with a combining function.

extendOccEnv_Acc Source #

Arguments

:: (a -> b -> b)	add to existing
-> (a -> b)	new element
-> OccEnv b	old
-> OccName
-> a	new
-> OccEnv b

Add a single element to an OccEnv, using a different function whether the OccName already exists or not.

filterOccEnv :: (a -> Bool) -> OccEnv a -> OccEnv a Source #

Filter out all elements in an OccEnv using a predicate.

delListFromOccEnv :: OccEnv a -> [OccName] -> OccEnv a Source #

Delete multiple elements from an OccEnv.

delFromOccEnv :: OccEnv a -> OccName -> OccEnv a Source #

Delete one element from an OccEnv.

alterOccEnv :: (Maybe a -> Maybe a) -> OccEnv a -> OccName -> OccEnv a Source #

Alter an OccEnv, adding or removing an element at the given key.

minusOccEnv :: OccEnv a -> OccEnv b -> OccEnv a Source #

Remove elements of the first OccEnv that appear in the second OccEnv.

minusOccEnv_C :: (a -> b -> Maybe a) -> OccEnv a -> OccEnv b -> OccEnv a Source #

Alters (replaces or removes) those elements of the first OccEnv that are mentioned in the second OccEnv.

Same idea as differenceWith.

minusOccEnv_C_Ns :: (UniqFM NameSpace a -> UniqFM NameSpace b -> UniqFM NameSpace a) -> OccEnv a -> OccEnv b -> OccEnv a Source #

pprOccEnv :: (a -> SDoc) -> OccEnv a -> SDoc Source #

forceOccEnv :: (a -> ()) -> OccEnv a -> () Source #

Force an OccEnv with the provided function.

intersectOccEnv_C :: (a -> b -> c) -> OccEnv a -> OccEnv b -> OccEnv c Source #

The `OccSet` type

data OccSet Source #

emptyOccSet :: OccSet Source #

unitOccSet :: OccName -> OccSet Source #

mkOccSet :: [OccName] -> OccSet Source #

extendOccSet :: OccSet -> OccName -> OccSet Source #

extendOccSetList :: OccSet -> [OccName] -> OccSet Source #

unionOccSets :: OccSet -> OccSet -> OccSet Source #

unionManyOccSets :: [OccSet] -> OccSet Source #

elemOccSet :: OccName -> OccSet -> Bool Source #

isEmptyOccSet :: OccSet -> Bool Source #

Dealing with main

mainOcc :: OccName Source #

ppMainFn :: OccName -> SDoc Source #

Tidying up

type TidyOccEnv = UniqFM FastString Int Source #

emptyTidyOccEnv :: TidyOccEnv Source #

initTidyOccEnv :: [OccName] -> TidyOccEnv Source #

trimTidyOccEnv :: TidyOccEnv -> [OccName] -> TidyOccEnv Source #

tidyOccName :: TidyOccEnv -> OccName -> (TidyOccEnv, OccName) Source #

avoidClashesOccEnv :: TidyOccEnv -> [OccName] -> TidyOccEnv Source #

delTidyOccEnvList :: TidyOccEnv -> [OccName] -> TidyOccEnv Source #

type FastStringEnv a = UniqFM FastString a Source #

A non-deterministic set of FastStrings. See Note [Deterministic UniqFM] in GHC.Types.Unique.DFM for explanation why it's not deterministic and why it matters. Use DFastStringEnv if the set eventually gets converted into a list or folded over in a way where the order changes the generated code.

emptyFsEnv :: FastStringEnv a Source #

lookupFsEnv :: FastStringEnv a -> FastString -> Maybe a Source #

extendFsEnv :: FastStringEnv a -> FastString -> a -> FastStringEnv a Source #

mkFsEnv :: [(FastString, a)] -> FastStringEnv a Source #