GHC.Tc.Zonk.Type

Final zonking to Type. See Note [Zonking to Type].

Distinct from the intra-typechecker zonking in GHC.Tc.Zonk.TcType; see Note [Module structure for zonking].

Zonking

For a description of "zonking", see Note [What is zonking?].

type ZonkTcM = ZonkT TcM

Zonking monad for a computation that zonks to Type, reading from a ZonkEnv but not extending or modifying it.

See Note [Zonking to Type].

zonkTopDecls :: Bag EvBind -> LHsBinds GhcTc -> [LRuleDecl GhcTc] -> [LTcSpecPrag] -> [LForeignDecl GhcTc] -> TcM (TypeEnv, Bag EvBind, LHsBinds GhcTc, [LForeignDecl GhcTc], [LTcSpecPrag], [LRuleDecl GhcTc])

zonkTopExpr :: HsExpr GhcTc -> TcM (HsExpr GhcTc)

zonkTopLExpr :: LHsExpr GhcTc -> TcM (LHsExpr GhcTc)

zonkTopBndrs :: [TcId] -> TcM [Id]

zonkTyVarBindersX :: [VarBndr TcTyVar vis] -> ZonkBndrTcM [VarBndr TyVar vis]

zonkTyVarBinderX :: VarBndr TcTyVar vis -> ZonkBndrTcM (VarBndr TyVar vis)

zonkTyBndrsX :: [TcTyVar] -> ZonkBndrTcM [TcTyVar]

zonkTcTypeToType :: TcType -> TcM Type

Confused by zonking? See Note [What is zonking?] in GHC.Tc.Zonk.Type.

zonkTcTypeToTypeX :: TcType -> ZonkTcM Type

zonkTcTypesToTypesX :: [TcType] -> ZonkTcM [Type]

zonkScaledTcTypesToTypesX :: [Scaled TcType] -> ZonkTcM [Scaled Type]

zonkTyVarOcc :: HasDebugCallStack => TcTyVar -> ZonkTcM Type

zonkCoToCo :: Coercion -> ZonkTcM Coercion

zonkEvBinds :: Bag EvBind -> ZonkBndrTcM (Bag EvBind)

zonkTcEvBinds :: TcEvBinds -> ZonkBndrTcM TcEvBinds

zonkTcMethInfoToMethInfoX :: TcMethInfo -> ZonkTcM MethInfo

lookupTyVarX :: TcTyVar -> ZonkTcM TyVar

ZonkEnv, and the ZonkT and ZonkBndrT monad transformers

module GHC.Tc.Zonk.Env

Coercion holes

isFilledCoercionHole :: CoercionHole -> TcM Bool

Is a coercion hole filled in?

unpackCoercionHole :: CoercionHole -> TcM Coercion

Retrieve the contents of a coercion hole. Panics if the hole is unfilled

unpackCoercionHole_maybe :: CoercionHole -> TcM (Maybe Coercion)

Retrieve the contents of a coercion hole, if it is filled

Rewriter sets

zonkRewriterSet :: RewriterSet -> TcM RewriterSet

Check whether any coercion hole in a RewriterSet is still unsolved. Does this by recursively looking through filled coercion holes until one is found that is not yet filled in, at which point this aborts.

zonkCtRewriterSet :: Ct -> TcM Ct

zonkCtEvRewriterSet :: CtEvidence -> TcM CtEvidence

Tidying

tcInitTidyEnv :: ZonkM TidyEnv

tcInitOpenTidyEnv :: [TyCoVar] -> ZonkM TidyEnv

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