GHC.Rename.Env

Documentation

newTopSrcBinder :: LocatedN RdrName -> RnM Name

lookupLocatedTopBndrRn :: Located RdrName -> RnM (Located Name)

lookupLocatedTopBndrRnN :: LocatedN RdrName -> RnM (LocatedN Name)

lookupTopBndrRn :: RdrName -> RnM Name

lookupLocatedOccRn :: GenLocated (SrcSpanAnn' ann) RdrName -> TcRn (GenLocated (SrcSpanAnn' ann) Name)

lookupOccRn :: RdrName -> RnM Name

lookupOccRn_maybe :: RdrName -> RnM (Maybe Name)

lookupLocalOccRn_maybe :: RdrName -> RnM (Maybe Name)

lookupInfoOccRn :: RdrName -> RnM [Name]

lookupLocalOccThLvl_maybe :: Name -> RnM (Maybe (TopLevelFlag, ThLevel))

lookupLocalOccRn :: RdrName -> RnM Name

lookupTypeOccRn :: RdrName -> RnM Name

lookupGlobalOccRn :: RdrName -> RnM Name

lookupGlobalOccRn_maybe :: RdrName -> RnM (Maybe Name)

data AmbiguousResult

Result of looking up an occurrence that might be an ambiguous field.

Constructors

UnambiguousGre GreName

Occurrence picked out a single name, which may or may not belong to a field (or might be unbound, if an error has been reported already, per Note [ Unbound vs Ambiguous Names ]).

AmbiguousFields

Occurrence picked out two or more fields, and no non-fields. For now this is allowed by DuplicateRecordFields in certain circumstances, as the type-checker may be able to disambiguate later.

lookupExprOccRn :: DuplicateRecordFields -> RdrName -> RnM (Maybe AmbiguousResult)

Look up a RdrName used as a variable in an expression.

This may be a local variable, global variable, or one or more record selector functions. It will not return record fields created with the NoFieldSelectors extension (see Note [NoFieldSelectors]). The DuplicateRecordFields argument controls whether ambiguous fields will be allowed (resulting in an AmbiguousFields result being returned).

If the name is not in scope at the term level, but its promoted equivalent is in scope at the type level, the lookup will succeed (so that the type-checker can report a more informative error later). See Note [Promotion].

lookupRecFieldOcc :: Maybe Name -> RdrName -> RnM Name

Look up an occurrence of a field in record construction or pattern matching (but not update). When the -XDisambiguateRecordFields flag is on, take account of the data constructor name to disambiguate which field to use.

See Note [DisambiguateRecordFields] and Note [NoFieldSelectors].

lookupRecFieldOcc_update :: DuplicateRecordFields -> RdrName -> RnM AmbiguousResult

Look up an occurrence of a field in a record update, returning the selector name.

Unlike construction and pattern matching with -XDisambiguateRecordFields (see lookupRecFieldOcc), there is no data constructor to help disambiguate, so this may be ambiguous if the field is in scope multiple times. However we ignore non-fields in scope with the same name if -XDisambiguateRecordFields is on (see Note [DisambiguateRecordFields for updates]).

Here a field is in scope even if NoFieldSelectors was enabled at its definition site (see Note [NoFieldSelectors]).

data ChildLookupResult

Constructors

NameNotFound

IncorrectParent Name GreName [Name]

FoundChild Parent GreName

Instances

Outputable ChildLookupResult

Defined in GHC.Rename.Env

Methods

ppr :: ChildLookupResult -> SDoc

lookupSubBndrOcc_helper :: Bool -> Bool -> Name -> RdrName -> RnM ChildLookupResult

Used in export lists to lookup the children.

combineChildLookupResult :: [RnM ChildLookupResult] -> RnM ChildLookupResult

Specialised version of msum for RnM ChildLookupResult

data HsSigCtxt

Constructors

TopSigCtxt NameSet

LocalBindCtxt NameSet

ClsDeclCtxt Name

InstDeclCtxt NameSet

HsBootCtxt NameSet

RoleAnnotCtxt NameSet

Instances

Outputable HsSigCtxt

Defined in GHC.Rename.Env

Methods

ppr :: HsSigCtxt -> SDoc

lookupLocalTcNames :: HsSigCtxt -> SDoc -> RdrName -> RnM [(RdrName, Name)]

lookupSigOccRn :: HsSigCtxt -> Sig GhcPs -> LocatedA RdrName -> RnM (LocatedA Name)

lookupSigOccRnN :: HsSigCtxt -> Sig GhcPs -> LocatedN RdrName -> RnM (LocatedN Name)

lookupSigCtxtOccRn

Arguments

:: HsSigCtxt

-> SDoc

description of thing we're looking up, like "type family"

-> LocatedA RdrName

-> RnM (LocatedA Name)

Lookup a name in relation to the names in a HsSigCtxt

lookupSigCtxtOccRnN

Arguments

:: HsSigCtxt

-> SDoc

description of thing we're looking up, like "type family"

-> LocatedN RdrName

-> RnM (LocatedN Name)

Lookup a name in relation to the names in a HsSigCtxt

lookupInstDeclBndr :: Name -> SDoc -> RdrName -> RnM Name

lookupFamInstName :: Maybe Name -> LocatedN RdrName -> RnM (LocatedN Name)

lookupConstructorFields :: Name -> RnM [FieldLabel]

lookupGreAvailRn :: RdrName -> RnM (Name, AvailInfo)

lookupSyntax :: Name -> RnM (SyntaxExpr GhcRn, FreeVars)

lookupSyntaxExpr

Arguments

:: Name

The standard name

-> RnM (HsExpr GhcRn, FreeVars)

Possibly a non-standard name

lookupSyntaxNames :: [Name] -> RnM ([HsExpr GhcRn], FreeVars)

lookupSyntaxName

Arguments

:: Name

The standard name

-> RnM (Name, FreeVars)

Possibly a non-standard name Lookup a Name that may be subject to Rebindable Syntax (RS).

• When RS is off, just return the supplied (standard) Name
• When RS is on, look up the OccName of the supplied Name; return what we find, or the supplied Name if there is nothing in scope

lookupIfThenElse :: RnM (Maybe Name)

lookupQualifiedDoExpr :: HsStmtContext p -> Name -> RnM (HsExpr GhcRn, FreeVars)

lookupQualifiedDo :: HsStmtContext p -> Name -> RnM (SyntaxExpr GhcRn, FreeVars)

lookupQualifiedDoName :: HsStmtContext p -> Name -> RnM (Name, FreeVars)

lookupNameWithQualifier :: Name -> ModuleName -> RnM (Name, FreeVars)

addUsedGRE :: Bool -> GlobalRdrElt -> RnM ()

addUsedGREs :: [GlobalRdrElt] -> RnM ()

addUsedDataCons :: GlobalRdrEnv -> TyCon -> RnM ()

dataTcOccs :: RdrName -> [RdrName]