TcEnv

Documentation

data TyThing

A global typecheckable-thing, essentially anything that has a name. Not to be confused with a TcTyThing, which is also a typecheckable thing but in the *local* context. See TcEnv for how to retrieve a TyThing given a Name.

Constructors

AnId Id

AConLike ConLike

ATyCon TyCon

ACoAxiom (CoAxiom Branched)

Instances

NamedThing TyThing

Defined in TyCoRep

Methods

getOccName :: TyThing -> OccName

getName :: TyThing -> Name

Outputable TyThing

Defined in TyCoRep

Methods

ppr :: TyThing -> SDoc

pprPrec :: Rational -> TyThing -> SDoc

data TcTyThing

A typecheckable thing available in a local context. Could be AGlobal TyThing, but also lexically scoped variables, etc. See TcEnv for how to retrieve a TyThing given a Name.

Constructors

AGlobal TyThing

ATcId

Fields

• tct_id :: TcId
• tct_info :: IdBindingInfo

ATyVar Name TcTyVar

ATcTyCon TyCon

APromotionErr PromotionErr

Instances

Outputable TcTyThing

Defined in TcRnTypes

Methods

ppr :: TcTyThing -> SDoc

pprPrec :: Rational -> TcTyThing -> SDoc

type TcId = Id

data InstInfo a

Constructors

InstInfo

Fields

• iSpec :: ClsInst
• iBinds :: InstBindings a

Instances

OutputableBndrId (GhcPass a) => Outputable (InstInfo (GhcPass a))

Defined in TcEnv

Methods

ppr :: InstInfo (GhcPass a) -> SDoc

pprPrec :: Rational -> InstInfo (GhcPass a) -> SDoc

iDFunId :: InstInfo a -> DFunId

pprInstInfoDetails :: OutputableBndrId (GhcPass a) => InstInfo (GhcPass a) -> SDoc

simpleInstInfoClsTy :: InstInfo a -> (Class, Type)

simpleInstInfoTy :: InstInfo a -> Type

simpleInstInfoTyCon :: InstInfo a -> TyCon

data InstBindings a

Constructors

InstBindings

Fields

• ib_tyvars :: [Name]
• ib_binds :: LHsBinds a
• ib_pragmas :: [LSig a]
• ib_extensions :: [Extension]
• ib_derived :: Bool

tcExtendGlobalEnv :: [TyThing] -> TcM r -> TcM r

tcExtendTyConEnv :: [TyCon] -> TcM r -> TcM r

tcExtendGlobalEnvImplicit :: [TyThing] -> TcM r -> TcM r

setGlobalTypeEnv :: TcGblEnv -> TypeEnv -> TcM TcGblEnv

tcExtendGlobalValEnv :: [Id] -> TcM a -> TcM a

tcLookupLocatedGlobal :: Located Name -> TcM TyThing

tcLookupGlobal :: Name -> TcM TyThing

tcLookupGlobalOnly :: Name -> TcM TyThing

tcLookupTyCon :: Name -> TcM TyCon

tcLookupClass :: Name -> TcM Class

tcLookupDataCon :: Name -> TcM DataCon

tcLookupPatSyn :: Name -> TcM PatSyn

tcLookupConLike :: Name -> TcM ConLike

tcLookupLocatedGlobalId :: Located Name -> TcM Id

tcLookupLocatedTyCon :: Located Name -> TcM TyCon

tcLookupLocatedClass :: Located Name -> TcM Class

tcLookupAxiom :: Name -> TcM (CoAxiom Branched)

lookupGlobal :: HscEnv -> Name -> IO TyThing

ioLookupDataCon :: HscEnv -> Name -> IO DataCon

tcExtendKindEnv :: NameEnv TcTyThing -> TcM r -> TcM r

tcExtendKindEnvList :: [(Name, TcTyThing)] -> TcM r -> TcM r

tcExtendTyVarEnv :: [TyVar] -> TcM r -> TcM r

tcExtendNameTyVarEnv :: [(Name, TcTyVar)] -> TcM r -> TcM r

tcExtendLetEnv :: TopLevelFlag -> TcSigFun -> IsGroupClosed -> [TcId] -> TcM a -> TcM a

tcExtendSigIds :: TopLevelFlag -> [TcId] -> TcM a -> TcM a

tcExtendRecIds :: [(Name, TcId)] -> TcM a -> TcM a

tcExtendIdEnv :: [TcId] -> TcM a -> TcM a

tcExtendIdEnv1 :: Name -> TcId -> TcM a -> TcM a

tcExtendIdEnv2 :: [(Name, TcId)] -> TcM a -> TcM a

tcExtendBinderStack :: [TcBinder] -> TcM a -> TcM a

tcExtendLocalTypeEnv :: TcLclEnv -> [(Name, TcTyThing)] -> TcM TcLclEnv

isTypeClosedLetBndr :: Id -> Bool

tcLookup :: Name -> TcM TcTyThing

tcLookupLocated :: Located Name -> TcM TcTyThing

tcLookupLocalIds :: [Name] -> TcM [TcId]

tcLookupId :: Name -> TcM Id

tcLookupIdMaybe :: Name -> TcM (Maybe Id)

tcLookupTyVar :: Name -> TcM TcTyVar

tcLookupLcl_maybe :: Name -> TcM (Maybe TcTyThing)

getInLocalScope :: TcM (Name -> Bool)

wrongThingErr :: String -> TcTyThing -> Name -> TcM a

pprBinders :: [Name] -> SDoc

tcAddDataFamConPlaceholders :: [LInstDecl GhcRn] -> TcM a -> TcM a

tcAddPatSynPlaceholders :: [PatSynBind GhcRn GhcRn] -> TcM a -> TcM a

getTypeSigNames :: [LSig GhcRn] -> NameSet

tcExtendRecEnv :: [(Name, TyThing)] -> TcM r -> TcM r

tcInitTidyEnv :: TcM TidyEnv

tcInitOpenTidyEnv :: [TyCoVar] -> TcM TidyEnv

Get a TidyEnv that includes mappings for all vars free in the given type. Useful when tidying open types.

tcLookupInstance :: Class -> [Type] -> TcM ClsInst

tcGetInstEnvs :: TcM InstEnvs

tcExtendRules :: [LRuleDecl GhcTc] -> TcM a -> TcM a

tcGetDefaultTys :: TcM ([Type], (Bool, Bool))

tcGetGlobalTyCoVars :: TcM TcTyVarSet

tcGetGlobalTyCoVars returns a fully-zonked set of *scoped* tyvars free in the environment. To improve subsequent calls to the same function it writes the zonked set back into the environment. Note that this returns all variables free in anything (term-level or type-level) in scope. We thus don't have to worry about clashes with things that are not in scope, because if they are reachable, then they'll be returned here. NB: This is closed over kinds, so it can return unification variables mentioned in the kinds of in-scope tyvars.

checkWellStaged :: SDoc -> ThLevel -> ThLevel -> TcM ()

tcMetaTy :: Name -> TcM Type

thLevel :: ThStage -> ThLevel

topIdLvl :: Id -> ThLevel

isBrackStage :: ThStage -> Bool

newDFunName :: Class -> [Type] -> SrcSpan -> TcM Name

Make a name for the dict fun for an instance decl. It's an *external* name, like other top-level names, and hence must be made with newGlobalBinder.

newDFunName' :: Class -> TyCon -> TcM Name

Special case of newDFunName to generate dict fun name for a single TyCon.

newFamInstTyConName :: Located Name -> [Type] -> TcM Name

newFamInstAxiomName :: Located Name -> [[Type]] -> TcM Name

mkStableIdFromString :: String -> Type -> SrcSpan -> (OccName -> OccName) -> TcM TcId

mkStableIdFromName :: Name -> Type -> SrcSpan -> (OccName -> OccName) -> TcM TcId

mkWrapperName :: (MonadIO m, HasDynFlags m, HasModule m) => String -> String -> m FastString

Orphan instances

MonadThings (IOEnv (Env TcGblEnv TcLclEnv))

Methods

lookupThing :: Name -> IOEnv (Env TcGblEnv TcLclEnv) TyThing

lookupId :: Name -> IOEnv (Env TcGblEnv TcLclEnv) Id

lookupDataCon :: Name -> IOEnv (Env TcGblEnv TcLclEnv) DataCon

lookupTyCon :: Name -> IOEnv (Env TcGblEnv TcLclEnv) TyCon