Safe Haskell	None
Language	GHC2021

GHC.Tc.Errors.Hole.FitTypes

Synopsis

data TypedHole = TypedHole {
- th_relevant_cts :: Bag CtEvidence
- th_implics :: [Implication]
- th_hole :: Maybe Hole
}
data HoleFit
- = TcHoleFit TcHoleFit
- | RawHoleFit SDoc
data TcHoleFit = HoleFit {
- hfId :: Id
- hfCand :: HoleFitCandidate
- hfType :: TcType
- hfRefLvl :: Int
- hfWrap :: [TcType]
- hfMatches :: [TcType]
- hfDoc :: Maybe [HsDocString]
}
data HoleFitCandidate
- = IdHFCand Id
- | NameHFCand Name
- | GreHFCand GlobalRdrElt
hfIsLcl :: TcHoleFit -> Bool
pprHoleFitCand :: HoleFitCandidate -> SDoc

Documentation

data TypedHole Source #

Constructors

TypedHole
Fields th_relevant_cts :: Bag CtEvidence Any relevant Cts to the hole th_implics :: [Implication] The nested implications of the hole with the innermost implication first. th_hole :: Maybe Hole The hole itself, if available.

Instances

Instances details

Outputable TypedHole Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods ppr :: TypedHole -> SDoc Source #

data HoleFit Source #

Constructors

TcHoleFit TcHoleFit
RawHoleFit SDoc	A fit that is just displayed as is. Here so that HoleFitPlugins can inject any fit they want.

Instances

Instances details

Outputable HoleFit Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods ppr :: HoleFit -> SDoc Source #

data TcHoleFit Source #

HoleFit is the type we use for valid hole fits. It contains the element that was checked, the Id of that element as found by tcLookup, and the refinement level of the fit, which is the number of extra argument holes that this fit uses (e.g. if hfRefLvl is 2, the fit is for `Id _ _`).

Constructors

HoleFit

Fields

hfId :: Id
The elements id in the TcM
hfCand :: HoleFitCandidate
The candidate that was checked.
hfType :: TcType
The type of the id, possibly zonked.
hfRefLvl :: Int
The number of holes in this fit.
hfWrap :: [TcType]
The wrapper for the match.
hfMatches :: [TcType]
What the refinement variables got matched with, if anything
hfDoc :: Maybe [HsDocString]
Documentation of this HoleFit, if available.

Instances

Instances details

Outputable TcHoleFit Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods ppr :: TcHoleFit -> SDoc Source #
Eq TcHoleFit Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods (==) :: TcHoleFit -> TcHoleFit -> Bool # (/=) :: TcHoleFit -> TcHoleFit -> Bool #
Ord TcHoleFit Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods compare :: TcHoleFit -> TcHoleFit -> Ordering # (<) :: TcHoleFit -> TcHoleFit -> Bool # (<=) :: TcHoleFit -> TcHoleFit -> Bool # (>) :: TcHoleFit -> TcHoleFit -> Bool # (>=) :: TcHoleFit -> TcHoleFit -> Bool # max :: TcHoleFit -> TcHoleFit -> TcHoleFit # min :: TcHoleFit -> TcHoleFit -> TcHoleFit #

data HoleFitCandidate Source #

HoleFitCandidates are passed to hole fit plugins and then checked whether they fit a given typed-hole.

Constructors

IdHFCand Id
NameHFCand Name
GreHFCand GlobalRdrElt

Instances

Instances details

NamedThing HoleFitCandidate Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods getOccName :: HoleFitCandidate -> OccName Source # getName :: HoleFitCandidate -> Name Source #
HasOccName HoleFitCandidate Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods occName :: HoleFitCandidate -> OccName Source #
Outputable HoleFitCandidate Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods ppr :: HoleFitCandidate -> SDoc Source #
Eq HoleFitCandidate Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods (==) :: HoleFitCandidate -> HoleFitCandidate -> Bool # (/=) :: HoleFitCandidate -> HoleFitCandidate -> Bool #
Ord HoleFitCandidate Source #
Instance details Defined in GHC.Tc.Errors.Hole.FitTypes Methods compare :: HoleFitCandidate -> HoleFitCandidate -> Ordering # (<) :: HoleFitCandidate -> HoleFitCandidate -> Bool # (<=) :: HoleFitCandidate -> HoleFitCandidate -> Bool # (>) :: HoleFitCandidate -> HoleFitCandidate -> Bool # (>=) :: HoleFitCandidate -> HoleFitCandidate -> Bool # max :: HoleFitCandidate -> HoleFitCandidate -> HoleFitCandidate # min :: HoleFitCandidate -> HoleFitCandidate -> HoleFitCandidate #

hfIsLcl :: TcHoleFit -> Bool Source #

pprHoleFitCand :: HoleFitCandidate -> SDoc Source #