Safe Haskell	Safe-Inferred
Language	Haskell2010

GHC.Tc.Gen.Head

Synopsis

data HsExprArg (p :: TcPass)
- = EValArg {
  - eva_ctxt :: AppCtxt
  - eva_arg :: EValArg p
  - eva_arg_ty :: !(XEVAType p)
  }
- | ETypeArg {
  - eva_ctxt :: AppCtxt
  - eva_at :: !(LHsToken "@" GhcRn)
  - eva_hs_ty :: LHsWcType GhcRn
  - eva_ty :: !(XETAType p)
  }
- | EPrag AppCtxt (HsPragE (GhcPass (XPass p)))
- | EWrap EWrap
data EValArg (p :: TcPass) where
- ValArg :: LHsExpr (GhcPass (XPass p)) -> EValArg p
- ValArgQL :: {..} -> EValArg 'TcpInst
data TcPass
- = TcpRn
- | TcpInst
- | TcpTc
data AppCtxt
- = VAExpansion (HsExpr GhcRn) SrcSpan
- | VACall (HsExpr GhcRn) Int SrcSpan
appCtxtLoc :: AppCtxt -> SrcSpan
insideExpansion :: AppCtxt -> Bool
splitHsApps :: HsExpr GhcRn -> ((HsExpr GhcRn, AppCtxt), [HsExprArg 'TcpRn])
rebuildHsApps :: HsExpr GhcTc -> AppCtxt -> [HsExprArg 'TcpTc] -> TcRhoType -> TcM (HsExpr GhcTc)
addArgWrap :: HsWrapper -> [HsExprArg 'TcpInst] -> [HsExprArg 'TcpInst]
isHsValArg :: HsExprArg id -> Bool
countLeadingValArgs :: [HsExprArg id] -> Int
isVisibleArg :: HsExprArg id -> Bool
pprHsExprArgTc :: HsExprArg 'TcpInst -> SDoc
countVisAndInvisValArgs :: [HsExprArg id] -> Arity
countHsWrapperInvisArgs :: HsWrapper -> Arity
tcInferAppHead :: (HsExpr GhcRn, AppCtxt) -> [HsExprArg 'TcpRn] -> TcM (HsExpr GhcTc, TcSigmaType)
tcInferAppHead_maybe :: HsExpr GhcRn -> [HsExprArg 'TcpRn] -> TcM (Maybe (HsExpr GhcTc, TcSigmaType))
tcInferId :: Name -> TcM (HsExpr GhcTc, TcSigmaType)
tcCheckId :: Name -> ExpRhoType -> TcM (HsExpr GhcTc)
obviousSig :: HsExpr GhcRn -> Maybe (LHsSigWcType GhcRn)
tyConOf :: FamInstEnvs -> TcSigmaType -> Maybe TyCon
tyConOfET :: FamInstEnvs -> ExpRhoType -> Maybe TyCon
lookupParents :: Bool -> RdrName -> RnM [(RecSelParent, GlobalRdrElt)]
fieldNotInType :: RecSelParent -> RdrName -> TcRnMessage
notSelector :: Name -> TcRnMessage
nonBidirectionalErr :: Name -> TcRnMessage
addHeadCtxt :: AppCtxt -> TcM a -> TcM a
addExprCtxt :: HsExpr GhcRn -> TcRn a -> TcRn a
addFunResCtxt :: HsExpr GhcRn -> [HsExprArg 'TcpRn] -> TcType -> ExpRhoType -> TcM a -> TcM a

Documentation

data HsExprArg (p :: TcPass) Source #

Constructors

EValArg
Fields eva_ctxt :: AppCtxt eva_arg :: EValArg p eva_arg_ty :: !(XEVAType p)
ETypeArg
Fields eva_ctxt :: AppCtxt eva_at :: !(LHsToken "@" GhcRn) eva_hs_ty :: LHsWcType GhcRn eva_ty :: !(XETAType p)
EPrag AppCtxt (HsPragE (GhcPass (XPass p)))
EWrap EWrap

Instances

Instances details

OutputableBndrId (XPass p) => Outputable (HsExprArg p) Source #
Instance details Defined in GHC.Tc.Gen.Head Methods ppr :: HsExprArg p -> SDoc Source #

data EValArg (p :: TcPass) where Source #

Constructors

ValArg :: LHsExpr (GhcPass (XPass p)) -> EValArg p
ValArgQL
Fields :: { va_expr :: LHsExpr GhcRn , va_fun :: (HsExpr GhcTc, AppCtxt) , va_args :: [HsExprArg 'TcpInst] , va_ty :: TcRhoType } -> EValArg 'TcpInst

Instances

Instances details

OutputableBndrId (XPass p) => Outputable (EValArg p) Source #
Instance details Defined in GHC.Tc.Gen.Head Methods ppr :: EValArg p -> SDoc Source #

data TcPass Source #

Constructors

TcpRn
TcpInst
TcpTc

data AppCtxt Source #

Constructors

VAExpansion (HsExpr GhcRn) SrcSpan
VACall (HsExpr GhcRn) Int SrcSpan

Instances

Instances details

Outputable AppCtxt Source #
Instance details Defined in GHC.Tc.Gen.Head Methods ppr :: AppCtxt -> SDoc Source #

appCtxtLoc :: AppCtxt -> SrcSpan Source #

insideExpansion :: AppCtxt -> Bool Source #

splitHsApps :: HsExpr GhcRn -> ((HsExpr GhcRn, AppCtxt), [HsExprArg 'TcpRn]) Source #

rebuildHsApps Source #

Arguments

:: HsExpr GhcTc	the function being applied
-> AppCtxt
-> [HsExprArg 'TcpTc]	the arguments to the function
-> TcRhoType	result type of the application
-> TcM (HsExpr GhcTc)

Rebuild an application: takes a type-checked application head expression together with arguments in the form of typechecked HsExprArgs and returns a typechecked application of the head to the arguments.

This performs a representation-polymorphism check to ensure that the remaining value arguments in an application have a fixed RuntimeRep.

See Note [Checking for representation-polymorphic built-ins].

addArgWrap :: HsWrapper -> [HsExprArg 'TcpInst] -> [HsExprArg 'TcpInst] Source #

isHsValArg :: HsExprArg id -> Bool Source #

countLeadingValArgs :: [HsExprArg id] -> Int Source #

isVisibleArg :: HsExprArg id -> Bool Source #

pprHsExprArgTc :: HsExprArg 'TcpInst -> SDoc Source #

countVisAndInvisValArgs :: [HsExprArg id] -> Arity Source #

Count visible and invisible value arguments in a list of HsExprArg arguments.

countHsWrapperInvisArgs :: HsWrapper -> Arity Source #

Counts the number of invisible term-level arguments applied by an HsWrapper. Precondition: this wrapper contains no abstractions.

tcInferAppHead :: (HsExpr GhcRn, AppCtxt) -> [HsExprArg 'TcpRn] -> TcM (HsExpr GhcTc, TcSigmaType) Source #