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| Description |
GHC uses several kinds of name internally:
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| Synopsis |
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| The NameSpace type
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| data NameSpace |
 Instances | |
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| Construction
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There are two forms of data constructor:
- Source data constructors
- The data constructors mentioned in Haskell source code
- Real data constructors
- The data constructors of the representation type, which may not be the same as the source type
For example:
data T = T !(Int, Int)
The source datacon has type (Int, Int) -> T
The real datacon has type Int -> Int -> T
GHC chooses a representation based on the strictness etc.
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| clsName :: NameSpace |
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| varName :: NameSpace |
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| srcDataName :: NameSpace |
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| Pretty Printing
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| pprNameSpace :: NameSpace -> SDoc |
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| pprNonVarNameSpace :: NameSpace -> SDoc |
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| pprNameSpaceBrief :: NameSpace -> SDoc |
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| The OccName type
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| data OccName |
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| pprOccName :: OccName -> SDoc |
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| Construction
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| mkOccName :: NameSpace -> String -> OccName |
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| mkOccNameFS :: NameSpace -> FastString -> OccName |
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| mkVarOcc :: String -> OccName |
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| mkVarOccFS :: FastString -> OccName |
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| mkDataOcc :: String -> OccName |
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| mkDataOccFS :: FastString -> OccName |
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| mkTyVarOcc :: String -> OccName |
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| mkTyVarOccFS :: FastString -> OccName |
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| mkTcOcc :: String -> OccName |
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| mkTcOccFS :: FastString -> OccName |
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| mkClsOcc :: String -> OccName |
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| mkClsOccFS :: FastString -> OccName |
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| mkDFunOcc |
| :: 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?
| | -> Int | Unique index
| | -> OccName | E.g. $f3OrdMaybe
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| mkTupleOcc :: NameSpace -> Boxity -> Arity -> OccName |
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| setOccNameSpace :: NameSpace -> OccName -> OccName |
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| Derived OccNames
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| isDerivedOccName :: OccName -> Bool |
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| mkWorkerOcc :: OccName -> OccName |
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| mkSuperDictSelOcc |
| :: Int | Index of superclass, e.g. 3
| | -> OccName | Class, e.g. Ord
| | -> OccName | Derived Occname, e.g. $p3Ord
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| mkLocalOcc |
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| mkMethodOcc :: OccName -> OccName |
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| mkInstTyTcOcc |
| :: Int | DFun Index
| | -> OccName | Family name, e.g. Map
| | -> OccName | Nice unique version, e.g. :R23Map
| | Derive a name for the representation type constructor of a
data/newtype instance.
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| Deconstruction
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| occNameFS :: OccName -> FastString |
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| occNameString :: OccName -> String |
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| occNameSpace :: OccName -> NameSpace |
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| isTvOcc :: OccName -> Bool |
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| isDataSymOcc :: OccName -> Bool |
| Test if the OccName is a data constructor that starts with
a symbol (e.g. :, or [])
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| isSymOcc :: OccName -> Bool |
| Test if the OccName is that for any operator (whether
it is a data constructor or variable or whatever)
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| isValOcc :: OccName -> Bool |
| Value OccNamess are those that are either in
the variable or data constructor namespaces
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| parenSymOcc :: OccName -> SDoc -> SDoc |
| Wrap parens around an operator
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| reportIfUnused :: OccName -> Bool |
| Haskell 98 encourages compilers to suppress warnings about
unused names in a pattern if they start with _: this implements
that test
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| isTcClsNameSpace :: NameSpace -> Bool |
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| isTvNameSpace :: NameSpace -> Bool |
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| isDataConNameSpace :: NameSpace -> Bool |
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| isVarNameSpace :: NameSpace -> Bool |
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| isValNameSpace :: NameSpace -> Bool |
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| isTupleOcc_maybe :: OccName -> Maybe (NameSpace, Boxity, Arity) |
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| The OccEnv type
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| data OccEnv a |
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| emptyOccEnv :: OccEnv a |
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| unitOccEnv :: OccName -> a -> OccEnv a |
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| extendOccEnv :: OccEnv a -> OccName -> a -> OccEnv a |
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| mapOccEnv :: (a -> b) -> OccEnv a -> OccEnv b |
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| lookupOccEnv :: OccEnv a -> OccName -> Maybe a |
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| mkOccEnv :: [(OccName, a)] -> OccEnv a |
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| mkOccEnv_C :: (a -> a -> a) -> [(OccName, a)] -> OccEnv a |
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| extendOccEnvList :: OccEnv a -> [(OccName, a)] -> OccEnv a |
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| elemOccEnv :: OccName -> OccEnv a -> Bool |
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| occEnvElts :: OccEnv a -> [a] |
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| foldOccEnv :: (a -> b -> b) -> b -> OccEnv a -> b |
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| plusOccEnv :: OccEnv a -> OccEnv a -> OccEnv a |
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| plusOccEnv_C :: (a -> a -> a) -> OccEnv a -> OccEnv a -> OccEnv a |
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| extendOccEnv_C :: (a -> a -> a) -> OccEnv a -> OccName -> a -> OccEnv a |
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| filterOccEnv :: (elt -> Bool) -> OccEnv elt -> OccEnv elt |
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| delListFromOccEnv :: OccEnv a -> [OccName] -> OccEnv a |
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| delFromOccEnv :: OccEnv a -> OccName -> OccEnv a |
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| The OccSet type
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| type OccSet = UniqSet OccName |
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| emptyOccSet :: OccSet |
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| unitOccSet :: OccName -> OccSet |
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| mkOccSet :: [OccName] -> OccSet |
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| extendOccSet :: OccSet -> OccName -> OccSet |
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| extendOccSetList :: OccSet -> [OccName] -> OccSet |
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| unionOccSets :: OccSet -> OccSet -> OccSet |
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| unionManyOccSets :: [OccSet] -> OccSet |
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| minusOccSet :: OccSet -> OccSet -> OccSet |
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| elemOccSet :: OccName -> OccSet -> Bool |
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| occSetElts :: OccSet -> [OccName] |
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| foldOccSet :: (OccName -> b -> b) -> b -> OccSet -> b |
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| isEmptyOccSet :: OccSet -> Bool |
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| intersectOccSet :: OccSet -> OccSet -> OccSet |
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| intersectsOccSet :: OccSet -> OccSet -> Bool |
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| Tidying up
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| type TidyOccEnv = OccEnv Int |
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| emptyTidyOccEnv :: TidyOccEnv |
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| tidyOccName :: TidyOccEnv -> OccName -> (TidyOccEnv, OccName) |
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| initTidyOccEnv :: [OccName] -> TidyOccEnv |
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| Lexical characteristics of Haskell names
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| isLexVar :: FastString -> Bool |
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| isLexConSym :: FastString -> Bool |
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| startsVarId :: Char -> Bool |
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| Produced by Haddock version 2.3.0 |
