ghc-6.10.2: The GHC APIContentsIndex
Name
Contents
The main types
Creating Names
Manipulating and deconstructing Names
Predicates on Names
Class NamedThing and overloaded friends
Description

GHC uses several kinds of name internally:

  • OccName: see OccName
  • RdrName.RdrName: see RdrName
  • Name is the type of names that have had their scoping and binding resolved. They have an OccName but also a Unique that disambiguates Names that have the same OccName and indeed is used for all Name comparison. Names also contain information about where they originated from, see Name
  • Id.Id: see Id
  • Var.Var: see Var

Names are one of:

  • External, if they name things declared in other modules. Some external Names are wired in, i.e. they name primitives defined in the compiler itself
  • Internal, if they name things in the module being compiled. Some internal Names are system names, if they are names manufactured by the compiler
Synopsis
data Name
data BuiltInSyntax
= BuiltInSyntax
| UserSyntax
mkInternalName :: Unique -> OccName -> SrcSpan -> Name
mkSystemName :: Unique -> OccName -> Name
mkSystemVarName :: Unique -> FastString -> Name
mkSysTvName :: Unique -> FastString -> Name
mkFCallName :: Unique -> String -> Name
mkIPName :: Unique -> OccName -> Name
mkTickBoxOpName :: Unique -> String -> Name
mkExternalName :: Unique -> Module -> OccName -> SrcSpan -> Name
mkWiredInName :: Module -> OccName -> Unique -> TyThing -> BuiltInSyntax -> Name
nameUnique :: Name -> Unique
setNameUnique :: Name -> Unique -> Name
nameOccName :: Name -> OccName
nameModule :: Name -> Module
nameModule_maybe :: Name -> Maybe Module
tidyNameOcc :: Name -> OccName -> Name
hashName :: Name -> Int
localiseName :: Name -> Name
nameSrcLoc :: Name -> SrcLoc
nameSrcSpan :: Name -> SrcSpan
pprNameLoc :: Name -> SDoc
isSystemName :: Name -> Bool
isInternalName :: Name -> Bool
isExternalName :: Name -> Bool
isTyVarName :: Name -> Bool
isTyConName :: Name -> Bool
isDataConName :: Name -> Bool
isValName :: Name -> Bool
isVarName :: Name -> Bool
isWiredInName :: Name -> Bool
isBuiltInSyntax :: Name -> Bool
wiredInNameTyThing_maybe :: Name -> Maybe TyThing
nameIsLocalOrFrom :: Module -> Name -> Bool
class NamedThing a where
getOccName :: a -> OccName
getName :: a -> Name
getSrcLoc :: NamedThing a => a -> SrcLoc
getSrcSpan :: NamedThing a => a -> SrcSpan
getOccString :: NamedThing a => a -> String
pprInfixName :: (Outputable a, NamedThing a) => a -> SDoc
pprPrefixName :: (Outputable a, NamedThing a) => a -> SDoc
module OccName
The main types
data Name
A unique, unambigious name for something, containing information about where that thing originated.
show/hide Instances
data BuiltInSyntax
BuiltInSyntax is for things like (:), [] and tuples, which have special syntactic forms. They aren't in scope as such.
Constructors
BuiltInSyntax
UserSyntax
Creating Names
mkInternalName :: Unique -> OccName -> SrcSpan -> Name
Create a name which is (for now at least) local to the current module and hence does not need a Module to disambiguate it from other Names
mkSystemName :: Unique -> OccName -> Name
Create a name brought into being by the compiler
mkSystemVarName :: Unique -> FastString -> Name
mkSysTvName :: Unique -> FastString -> Name
mkFCallName :: Unique -> String -> Name
Make a name for a foreign call
mkIPName :: Unique -> OccName -> Name
Make the name of an implicit parameter
mkTickBoxOpName :: Unique -> String -> Name
mkExternalName :: Unique -> Module -> OccName -> SrcSpan -> Name
Create a name which definitely originates in the given module
mkWiredInName :: Module -> OccName -> Unique -> TyThing -> BuiltInSyntax -> Name
Create a name which is actually defined by the compiler itself
Manipulating and deconstructing Names
nameUnique :: Name -> Unique
setNameUnique :: Name -> Unique -> Name
nameOccName :: Name -> OccName
nameModule :: Name -> Module
nameModule_maybe :: Name -> Maybe Module
tidyNameOcc :: Name -> OccName -> Name
hashName :: Name -> Int
localiseName :: Name -> Name
Make the Name into an internal name, regardless of what it was to begin with
nameSrcLoc :: Name -> SrcLoc
nameSrcSpan :: Name -> SrcSpan
pprNameLoc :: Name -> SDoc
Predicates on Names
isSystemName :: Name -> Bool
isInternalName :: Name -> Bool
isExternalName :: Name -> Bool
isTyVarName :: Name -> Bool
isTyConName :: Name -> Bool
isDataConName :: Name -> Bool
isValName :: Name -> Bool
isVarName :: Name -> Bool
isWiredInName :: Name -> Bool
isBuiltInSyntax :: Name -> Bool
wiredInNameTyThing_maybe :: Name -> Maybe TyThing
nameIsLocalOrFrom :: Module -> Name -> Bool
Class NamedThing and overloaded friends
class NamedThing a where
A class allowing convenient access to the Name of various datatypes
Methods
getOccName :: a -> OccName
getName :: a -> Name
show/hide Instances
getSrcLoc :: NamedThing a => a -> SrcLoc
getSrcSpan :: NamedThing a => a -> SrcSpan
getOccString :: NamedThing a => a -> String
pprInfixName :: (Outputable a, NamedThing a) => a -> SDoc
pprPrefixName :: (Outputable a, NamedThing a) => a -> SDoc
module OccName
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