diff options
Diffstat (limited to 'compiler/GHC/Tc/Errors/Types.hs')
| -rw-r--r-- | compiler/GHC/Tc/Errors/Types.hs | 71 |
1 files changed, 69 insertions, 2 deletions
diff --git a/compiler/GHC/Tc/Errors/Types.hs b/compiler/GHC/Tc/Errors/Types.hs index 85e7a18377..aa43f6f581 100644 --- a/compiler/GHC/Tc/Errors/Types.hs +++ b/compiler/GHC/Tc/Errors/Types.hs @@ -92,6 +92,8 @@ module GHC.Tc.Errors.Types ( , NonStandardGuards(..) , RuleLhsErrReason(..) , HsigShapeMismatchReason(..) + , WrongThingSort(..) + , StageCheckReason(..) ) where import GHC.Prelude @@ -103,7 +105,7 @@ import GHC.Tc.Types.Constraint import GHC.Tc.Types.Evidence (EvBindsVar) import GHC.Tc.Types.Origin ( CtOrigin (ProvCtxtOrigin), SkolemInfoAnon (SigSkol) , UserTypeCtxt (PatSynCtxt), TyVarBndrs, TypedThing - , FixedRuntimeRepOrigin(..) ) + , FixedRuntimeRepOrigin(..), InstanceWhat ) import GHC.Tc.Types.Rank (Rank) import GHC.Tc.Utils.TcType (IllegalForeignTypeReason, TcType) import GHC.Types.Avail (AvailInfo) @@ -125,7 +127,7 @@ import GHC.Core.Coercion.Axiom (CoAxBranch) import GHC.Core.ConLike (ConLike) import GHC.Core.DataCon (DataCon) import GHC.Core.FamInstEnv (FamInst) -import GHC.Core.InstEnv (ClsInst) +import GHC.Core.InstEnv (LookupInstanceErrReason, ClsInst) import GHC.Core.PatSyn (PatSyn) import GHC.Core.Predicate (EqRel, predTypeEqRel) import GHC.Core.TyCon (TyCon, TyConFlavour) @@ -146,6 +148,7 @@ import GHC.Unit.Module.Warnings (WarningTxt) import qualified Language.Haskell.TH.Syntax as TH import GHC.Generics ( Generic ) +import GHC.Types.Name.Env (NameEnv) {- Note [Migrating TcM Messages] @@ -3209,6 +3212,51 @@ data TcRnMessage where -} TcRnUnknownTyVarsOnRhsOfInjCond :: [Name] -> TcRnMessage + {-| TcRnLookupInstance groups several errors emitted when looking up class instances. + + Test cases: + none + -} + TcRnLookupInstance + :: !Class + -> ![Type] + -> !LookupInstanceErrReason + -> TcRnMessage + + {-| TcRnBadlyStaged is an error that occurs when a TH binding is used in an + invalid stage. + + Test cases: + T17820d + -} + TcRnBadlyStaged + :: !StageCheckReason -- ^ The binding being spliced. + -> !Int -- ^ The binding stage. + -> !Int -- ^ The stage at which the binding is used. + -> TcRnMessage + + {-| TcRnStageRestriction is an error that occurs when a top level splice refers to + a local name. + + Test cases: + T17820, T21547, T5795, qq00[1-4], annfail0{3,4,6,9} + -} + TcRnStageRestriction + :: !StageCheckReason -- ^ The binding being spliced. + -> TcRnMessage + + {-| TcRnTyThingUsedWrong is an error that occurs when a thing is used where another + thing was expected. + + Test cases: + none + -} + TcRnTyThingUsedWrong + :: !WrongThingSort -- ^ Expected thing. + -> !TcTyThing -- ^ Thing used wrongly. + -> !Name -- ^ Name of the thing used wrongly. + -> TcRnMessage + deriving Generic -- | Things forbidden in @type data@ declarations. @@ -4173,6 +4221,12 @@ data NotInScopeError -- or, a class doesn't have an associated type with this name, -- or, a record doesn't have a record field with this name. | UnknownSubordinate SDoc + + -- | A name is not in scope during type checking but passed the renamer. + -- + -- Test cases: + -- none + | NotInScopeTc (NameEnv TcTyThing) deriving Generic -- | Create a @"not in scope"@ error message for the given 'RdrName'. @@ -4471,3 +4525,16 @@ data HsigShapeMismatchReason = -} HsigShapeNotUnifiable !Name !Name !Bool deriving (Generic) + +data WrongThingSort + = WrongThingType + | WrongThingDataCon + | WrongThingPatSyn + | WrongThingConLike + | WrongThingClass + | WrongThingTyCon + | WrongThingAxiom + +data StageCheckReason + = StageCheckInstance !InstanceWhat !PredType + | StageCheckSplice !Name |