Safe Haskell	Safe-Inferred
Language	Haskell2010

GHC.Tc.Utils.Zonk

Contents

Extracting types from HsSyn
Other HsSyn functions
re-exported from TcMonad
Zonking

Description

Specialisations of the HsSyn syntax for the typechecker

This module is an extension of HsSyn syntax, for use in the type checker.

Synopsis

hsLitType :: HsLit (GhcPass p) -> TcType
hsPatType :: Pat GhcTc -> Type
hsLPatType :: LPat GhcTc -> Type
mkHsDictLet :: TcEvBinds -> LHsExpr GhcTc -> LHsExpr GhcTc
mkHsApp :: LHsExpr (GhcPass id) -> LHsExpr (GhcPass id) -> LHsExpr (GhcPass id)
mkHsAppTy :: LHsType (GhcPass p) -> LHsType (GhcPass p) -> LHsType (GhcPass p)
mkHsCaseAlt :: (Anno (GRHS (GhcPass p) (LocatedA (body (GhcPass p)))) ~ SrcSpan, Anno (Match (GhcPass p) (LocatedA (body (GhcPass p)))) ~ SrcSpanAnnA) => LPat (GhcPass p) -> LocatedA (body (GhcPass p)) -> LMatch (GhcPass p) (LocatedA (body (GhcPass p)))
tcShortCutLit :: HsOverLit GhcRn -> ExpRhoType -> TcM (Maybe (HsOverLit GhcTc))
shortCutLit :: Platform -> OverLitVal -> TcType -> Maybe (HsExpr GhcTc)
hsOverLitName :: OverLitVal -> Name
conLikeResTy :: ConLike -> [Type] -> Type
type TcId = Id
type TcIdSet = IdSet
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]
data ZonkEnv
data ZonkFlexi
- = DefaultFlexi
- | SkolemiseFlexi
- | RuntimeUnkFlexi
- | NoFlexi
emptyZonkEnv :: TcM ZonkEnv
mkEmptyZonkEnv :: ZonkFlexi -> TcM ZonkEnv
initZonkEnv :: (ZonkEnv -> TcM b) -> TcM b
zonkTyVarBindersX :: ZonkEnv -> [VarBndr TcTyVar vis] -> TcM (ZonkEnv, [VarBndr TyVar vis])
zonkTyVarBinderX :: ZonkEnv -> VarBndr TcTyVar vis -> TcM (ZonkEnv, VarBndr TyVar vis)
zonkTyBndrs :: [TcTyVar] -> TcM (ZonkEnv, [TyVar])
zonkTyBndrsX :: ZonkEnv -> [TcTyVar] -> TcM (ZonkEnv, [TyVar])
zonkTcTypeToType :: TcType -> TcM Type
zonkTcTypeToTypeX :: ZonkEnv -> TcType -> TcM Type
zonkTcTypesToTypesX :: ZonkEnv -> [TcType] -> TcM [Type]
zonkScaledTcTypesToTypesX :: ZonkEnv -> [Scaled TcType] -> TcM [Scaled Type]
zonkTyVarOcc :: ZonkEnv -> TyVar -> TcM TcType
zonkCoToCo :: ZonkEnv -> Coercion -> TcM Coercion
zonkEvBinds :: ZonkEnv -> Bag EvBind -> TcM (ZonkEnv, Bag EvBind)
zonkTcEvBinds :: ZonkEnv -> TcEvBinds -> TcM (ZonkEnv, TcEvBinds)
zonkTcMethInfoToMethInfoX :: ZonkEnv -> TcMethInfo -> TcM MethInfo
lookupTyVarOcc :: ZonkEnv -> TcTyVar -> Maybe TyVar

Extracting types from HsSyn

hsLitType :: HsLit (GhcPass p) -> TcType Source #

hsPatType :: Pat GhcTc -> Type Source #

hsLPatType :: LPat GhcTc -> Type Source #

Other HsSyn functions

mkHsDictLet :: TcEvBinds -> LHsExpr GhcTc -> LHsExpr GhcTc Source #

mkHsApp :: LHsExpr (GhcPass id) -> LHsExpr (GhcPass id) -> LHsExpr (GhcPass id) Source #

mkHsAppTy :: LHsType (GhcPass p) -> LHsType (GhcPass p) -> LHsType (GhcPass p) Source #

mkHsCaseAlt :: (Anno (GRHS (GhcPass p) (LocatedA (body (GhcPass p)))) ~ SrcSpan, Anno (Match (GhcPass p) (LocatedA (body (GhcPass p)))) ~ SrcSpanAnnA) => LPat (GhcPass p) -> LocatedA (body (GhcPass p)) -> LMatch (GhcPass p) (LocatedA (body (GhcPass p))) Source #

A simple case alternative with a single pattern, no binds, no guards; pre-typechecking

tcShortCutLit :: HsOverLit GhcRn -> ExpRhoType -> TcM (Maybe (HsOverLit GhcTc)) Source #

shortCutLit :: Platform -> OverLitVal -> TcType -> Maybe (HsExpr GhcTc) Source #

hsOverLitName :: OverLitVal -> Name Source #

conLikeResTy :: ConLike -> [Type] -> Type Source #

Returns the type of the whole pattern

re-exported from TcMonad

type TcId = Id Source #

type TcIdSet = IdSet Source #

Zonking

For a description of "zonking", see Note [What is zonking?] in GHC.Tc.Utils.TcMType

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

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

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

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

data ZonkEnv Source #

See Note [The ZonkEnv] Confused by zonking? See Note [What is zonking?] in GHC.Tc.Utils.TcMType.

Instances

Instances details

Outputable ZonkEnv Source #
Instance details Defined in GHC.Tc.Utils.Zonk Methods ppr :: ZonkEnv -> SDoc Source #

data ZonkFlexi Source #

Constructors

DefaultFlexi
SkolemiseFlexi
RuntimeUnkFlexi
NoFlexi

emptyZonkEnv :: TcM ZonkEnv Source #

mkEmptyZonkEnv :: ZonkFlexi -> TcM ZonkEnv Source #

initZonkEnv :: (ZonkEnv -> TcM b) -> TcM b Source #

zonkTyVarBindersX :: ZonkEnv -> [VarBndr TcTyVar vis] -> TcM (ZonkEnv, [VarBndr TyVar vis]) Source #

zonkTyVarBinderX :: ZonkEnv -> VarBndr TcTyVar vis -> TcM (ZonkEnv, VarBndr TyVar vis) Source #

zonkTyBndrs :: [TcTyVar] -> TcM (ZonkEnv, [TyVar]) Source #

zonkTyBndrsX :: ZonkEnv -> [TcTyVar] -> TcM (ZonkEnv, [TyVar]) Source #

zonkTcTypeToType :: TcType -> TcM Type Source #

zonkTcTypeToTypeX :: ZonkEnv -> TcType -> TcM Type Source #

zonkTcTypesToTypesX :: ZonkEnv -> [TcType] -> TcM [Type] Source #

zonkScaledTcTypesToTypesX :: ZonkEnv -> [Scaled TcType] -> TcM [Scaled Type] Source #

zonkTyVarOcc :: ZonkEnv -> TyVar -> TcM TcType Source #

zonkCoToCo :: ZonkEnv -> Coercion -> TcM Coercion Source #

zonkEvBinds :: ZonkEnv -> Bag EvBind -> TcM (ZonkEnv, Bag EvBind) Source #

zonkTcEvBinds :: ZonkEnv -> TcEvBinds -> TcM (ZonkEnv, TcEvBinds) Source #

zonkTcMethInfoToMethInfoX :: ZonkEnv -> TcMethInfo -> TcM MethInfo Source #

lookupTyVarOcc :: ZonkEnv -> TcTyVar -> Maybe TyVar Source #