Safe Haskell	None
Language	GHC2021

GHC.Tc.Gen.Match

Description

Typecheck some Matches

Synopsis

tcFunBindMatches :: UserTypeCtxt -> Name -> Mult -> MatchGroup GhcRn (LHsExpr GhcRn) -> [ExpPatType] -> ExpRhoType -> TcM (HsWrapper, MatchGroup GhcTc (LHsExpr GhcTc))
tcCaseMatches :: (AnnoBody body, Outputable (body GhcTc)) => TcMatchAltChecker body -> Scaled TcSigmaTypeFRR -> MatchGroup GhcRn (LocatedA (body GhcRn)) -> ExpRhoType -> TcM (HsWrapper, MatchGroup GhcTc (LocatedA (body GhcTc)))
tcLambdaMatches :: HsExpr GhcRn -> HsLamVariant -> MatchGroup GhcRn (LHsExpr GhcRn) -> [ExpPatType] -> ExpSigmaType -> TcM (HsWrapper, MatchGroup GhcTc (LHsExpr GhcTc))
tcGRHSList :: AnnoBody body => HsMatchContextRn -> TcMatchAltChecker body -> [LGRHS GhcRn (LocatedA (body GhcRn))] -> ExpRhoType -> TcM [LGRHS GhcTc (LocatedA (body GhcTc))]
tcGRHSsPat :: Mult -> GRHSs GhcRn (LHsExpr GhcRn) -> ExpRhoType -> TcM (GRHSs GhcTc (LHsExpr GhcTc))
type TcStmtChecker (body :: Type -> Type) rho_type = forall thing. HsStmtContextRn -> Stmt GhcRn (LocatedA (body GhcRn)) -> rho_type -> (rho_type -> TcM thing) -> TcM (Stmt GhcTc (LocatedA (body GhcTc)), thing)
type TcExprStmtChecker = TcStmtChecker HsExpr ExpRhoType
type TcCmdStmtChecker = TcStmtChecker HsCmd TcRhoType
tcStmts :: forall (body :: Type -> Type) rho_type. AnnoBody body => HsStmtContextRn -> TcStmtChecker body rho_type -> [LStmt GhcRn (LocatedA (body GhcRn))] -> rho_type -> TcM [LStmt GhcTc (LocatedA (body GhcTc))]
tcStmtsAndThen :: forall (body :: Type -> Type) rho_type thing. AnnoBody body => HsStmtContextRn -> TcStmtChecker body rho_type -> [LStmt GhcRn (LocatedA (body GhcRn))] -> rho_type -> (rho_type -> TcM thing) -> TcM ([LStmt GhcTc (LocatedA (body GhcTc))], thing)
tcDoStmts :: HsDoFlavour -> LocatedLW [LStmt GhcRn (LHsExpr GhcRn)] -> ExpRhoType -> TcM (HsExpr GhcTc)
tcBody :: LHsExpr GhcRn -> ExpRhoType -> TcM (LHsExpr GhcTc)
tcDoStmt :: TcExprStmtChecker
tcGuardStmt :: TcExprStmtChecker
checkArgCounts :: AnnoBody body => MatchGroup GhcRn (LocatedA (body GhcRn)) -> TcM VisArity

Documentation

tcFunBindMatches :: UserTypeCtxt -> Name -> Mult -> MatchGroup GhcRn (LHsExpr GhcRn) -> [ExpPatType] -> ExpRhoType -> TcM (HsWrapper, MatchGroup GhcTc (LHsExpr GhcTc)) Source #

tcCaseMatches Source #

Arguments

:: (AnnoBody body, Outputable (body GhcTc))
=> TcMatchAltChecker body	Typecheck the alternative RHSS
-> Scaled TcSigmaTypeFRR	Type of scrutinee
-> MatchGroup GhcRn (LocatedA (body GhcRn))	The case alternatives
-> ExpRhoType	Type of the whole case expression
-> TcM (HsWrapper, MatchGroup GhcTc (LocatedA (body GhcTc)))

tcLambdaMatches :: HsExpr GhcRn -> HsLamVariant -> MatchGroup GhcRn (LHsExpr GhcRn) -> [ExpPatType] -> ExpSigmaType -> TcM (HsWrapper, MatchGroup GhcTc (LHsExpr GhcTc)) Source #

tcGRHSList :: AnnoBody body => HsMatchContextRn -> TcMatchAltChecker body -> [LGRHS GhcRn (LocatedA (body GhcRn))] -> ExpRhoType -> TcM [LGRHS GhcTc (LocatedA (body GhcTc))] Source #

tcGRHSsPat :: Mult -> GRHSs GhcRn (LHsExpr GhcRn) -> ExpRhoType -> TcM (GRHSs GhcTc (LHsExpr GhcTc)) Source #

type TcStmtChecker (body :: Type -> Type) rho_type = forall thing. HsStmtContextRn -> Stmt GhcRn (LocatedA (body GhcRn)) -> rho_type -> (rho_type -> TcM thing) -> TcM (Stmt GhcTc (LocatedA (body GhcTc)), thing) Source #

type TcExprStmtChecker = TcStmtChecker HsExpr ExpRhoType Source #

type TcCmdStmtChecker = TcStmtChecker HsCmd TcRhoType Source #

tcStmts :: forall (body :: Type -> Type) rho_type. AnnoBody body => HsStmtContextRn -> TcStmtChecker body rho_type -> [LStmt GhcRn (LocatedA (body GhcRn))] -> rho_type -> TcM [LStmt GhcTc (LocatedA (body GhcTc))] Source #

tcStmtsAndThen :: forall (body :: Type -> Type) rho_type thing. AnnoBody body => HsStmtContextRn -> TcStmtChecker body rho_type -> [LStmt GhcRn (LocatedA (body GhcRn))] -> rho_type -> (rho_type -> TcM thing) -> TcM ([LStmt GhcTc (LocatedA (body GhcTc))], thing) Source #

tcDoStmts :: HsDoFlavour -> LocatedLW [LStmt GhcRn (LHsExpr GhcRn)] -> ExpRhoType -> TcM (HsExpr GhcTc) Source #

tcBody :: LHsExpr GhcRn -> ExpRhoType -> TcM (LHsExpr GhcTc) Source #

tcDoStmt :: TcExprStmtChecker Source #

tcGuardStmt :: TcExprStmtChecker Source #

checkArgCounts :: AnnoBody body => MatchGroup GhcRn (LocatedA (body GhcRn)) -> TcM VisArity Source #

checkArgCounts takes a [RenamedMatch] and decides whether the same number of required (aka visible) args are used in each equation. Returns the arity, the number of required args E.g. f @a True y = ... f False z = ... The MatchGroup for f has arity 2, not 3