| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
GHC.Tc.Module
Description
Typechecking a whole module
https://gitlab.haskell.org/ghc/ghc/wikis/commentary/compiler/type-checker
Synopsis
- tcRnStmt :: HscEnv -> GhciLStmt GhcPs -> IO (Messages TcRnMessage, Maybe ([Id], LHsExpr GhcTc, FixityEnv))
- tcRnExpr :: HscEnv -> TcRnExprMode -> LHsExpr GhcPs -> IO (Messages TcRnMessage, Maybe Type)
- data TcRnExprMode
- tcRnType :: HscEnv -> ZonkFlexi -> Bool -> LHsType GhcPs -> IO (Messages TcRnMessage, Maybe (Type, Kind))
- tcRnImportDecls :: HscEnv -> [LImportDecl GhcPs] -> IO (Messages TcRnMessage, Maybe GlobalRdrEnv)
- tcRnLookupRdrName :: HscEnv -> LocatedN RdrName -> IO (Messages TcRnMessage, Maybe [Name])
- getModuleInterface :: HscEnv -> Module -> IO (Messages TcRnMessage, Maybe ModIface)
- tcRnDeclsi :: HscEnv -> [LHsDecl GhcPs] -> IO (Messages TcRnMessage, Maybe TcGblEnv)
- isGHCiMonad :: HscEnv -> String -> IO (Messages TcRnMessage, Maybe Name)
- runTcInteractive :: HscEnv -> TcRn a -> IO (Messages TcRnMessage, Maybe a)
- withTcPlugins :: HscEnv -> TcM a -> TcM a
- withHoleFitPlugins :: HscEnv -> TcM a -> TcM a
- tcRnLookupName :: HscEnv -> Name -> IO (Messages TcRnMessage, Maybe TyThing)
- tcRnGetInfo :: HscEnv -> Name -> IO (Messages TcRnMessage, Maybe (TyThing, Fixity, [ClsInst], [FamInst], SDoc))
- tcRnModule :: HscEnv -> ModSummary -> Bool -> HsParsedModule -> IO (Messages TcRnMessage, Maybe TcGblEnv)
- tcRnModuleTcRnM :: HscEnv -> ModSummary -> HsParsedModule -> (Module, SrcSpan) -> TcRn TcGblEnv
- tcTopSrcDecls :: HsGroup GhcRn -> TcM (TcGblEnv, TcLclEnv)
- rnTopSrcDecls :: HsGroup GhcPs -> TcM (TcGblEnv, HsGroup GhcRn)
- checkBootDecl :: Bool -> TyThing -> TyThing -> Maybe SDoc
- checkHiBootIface' :: [ClsInst] -> TypeEnv -> [AvailInfo] -> ModDetails -> TcM [(Id, Id)]
- findExtraSigImports :: HscEnv -> HscSource -> ModuleName -> IO [ModuleName]
- implicitRequirements :: HscEnv -> [(PkgQual, Located ModuleName)] -> IO [ModuleName]
- checkUnit :: Unit -> TcM ()
- mergeSignatures :: HsParsedModule -> TcGblEnv -> ModIface -> TcRn TcGblEnv
- tcRnMergeSignatures :: HscEnv -> HsParsedModule -> TcGblEnv -> ModIface -> IO (Messages TcRnMessage, Maybe TcGblEnv)
- instantiateSignature :: TcRn TcGblEnv
- tcRnInstantiateSignature :: HscEnv -> Module -> RealSrcSpan -> IO (Messages TcRnMessage, Maybe TcGblEnv)
- loadUnqualIfaces :: HscEnv -> InteractiveContext -> TcM ()
- badReexportedBootThing :: Bool -> Name -> Name -> TcRnMessage
- checkBootDeclM :: Bool -> TyThing -> TyThing -> TcM ()
- missingBootThing :: Bool -> Name -> String -> TcRnMessage
- getRenamedStuff :: TcGblEnv -> RenamedStuff
- type RenamedStuff = Maybe (HsGroup GhcRn, [LImportDecl GhcRn], Maybe [(LIE GhcRn, Avails)], Maybe (LHsDoc GhcRn))
Documentation
tcRnStmt :: HscEnv -> GhciLStmt GhcPs -> IO (Messages TcRnMessage, Maybe ([Id], LHsExpr GhcTc, FixityEnv)) Source #
The returned [Id] is the list of new Ids bound by this statement. It can be used to extend the InteractiveContext via extendInteractiveContext.
The returned TypecheckedHsExpr is of type IO [ () ], a list of the bound values, coerced to ().
tcRnExpr :: HscEnv -> TcRnExprMode -> LHsExpr GhcPs -> IO (Messages TcRnMessage, Maybe Type) Source #
tcRnExpr just finds the type of an expression for :type
data TcRnExprMode Source #
How should we infer a type? See Note [TcRnExprMode]
Constructors
| TM_Inst | Instantiate inferred quantifiers only (:type) |
| TM_Default | Instantiate all quantifiers, and do eager defaulting (:type +d) |
tcRnType :: HscEnv -> ZonkFlexi -> Bool -> LHsType GhcPs -> IO (Messages TcRnMessage, Maybe (Type, Kind)) Source #
tcRnImportDecls :: HscEnv -> [LImportDecl GhcPs] -> IO (Messages TcRnMessage, Maybe GlobalRdrEnv) Source #
tcRnLookupRdrName :: HscEnv -> LocatedN RdrName -> IO (Messages TcRnMessage, Maybe [Name]) Source #
Find all the Names that this RdrName could mean, in GHCi
getModuleInterface :: HscEnv -> Module -> IO (Messages TcRnMessage, Maybe ModIface) Source #
ASSUMES that the module is either in the HomePackageTable or is
a package module with an interface on disk. If neither of these is
true, then the result will be an error indicating the interface
could not be found.
isGHCiMonad :: HscEnv -> String -> IO (Messages TcRnMessage, Maybe Name) Source #
runTcInteractive :: HscEnv -> TcRn a -> IO (Messages TcRnMessage, Maybe a) Source #
tcRnLookupName :: HscEnv -> Name -> IO (Messages TcRnMessage, Maybe TyThing) Source #
tcRnGetInfo :: HscEnv -> Name -> IO (Messages TcRnMessage, Maybe (TyThing, Fixity, [ClsInst], [FamInst], SDoc)) Source #
tcRnModule :: HscEnv -> ModSummary -> Bool -> HsParsedModule -> IO (Messages TcRnMessage, Maybe TcGblEnv) Source #
Top level entry point for typechecker and renamer
tcRnModuleTcRnM :: HscEnv -> ModSummary -> HsParsedModule -> (Module, SrcSpan) -> TcRn TcGblEnv Source #
checkBootDecl :: Bool -> TyThing -> TyThing -> Maybe SDoc Source #
Compares the two things for equivalence between boot-file and normal
code. Returns Nothing on success or Just "some helpful info for user"
failure. If the difference will be apparent to the user, Just empty is
perfectly suitable.
checkHiBootIface' :: [ClsInst] -> TypeEnv -> [AvailInfo] -> ModDetails -> TcM [(Id, Id)] Source #
findExtraSigImports :: HscEnv -> HscSource -> ModuleName -> IO [ModuleName] Source #
For a module modname of type HscSource, determine the list
of extra "imports" of other requirements which should be considered part of
the import of the requirement, because it transitively depends on those
requirements by imports of modules from other packages. The situation
is something like this:
unit p where signature X signature Y import X
unit q where dependency p[X=<A>,Y=<B>] signature A signature B
Although q's B does not directly import A, we still have to make sure we process A first, because the merging process will cause B to indirectly import A. This function finds the TRANSITIVE closure of all such imports we need to make.
implicitRequirements :: HscEnv -> [(PkgQual, Located ModuleName)] -> IO [ModuleName] Source #
checkUnit :: Unit -> TcM () Source #
Given a Unit, make sure it is well typed. This is because
unit IDs come from Cabal, which does not know if things are well-typed or
not; a component may have been filled with implementations for the holes
that don't actually fulfill the requirements.
mergeSignatures :: HsParsedModule -> TcGblEnv -> ModIface -> TcRn TcGblEnv Source #
Given a local ModIface, merge all inherited requirements
from requirementMerges into this signature, producing
a final TcGblEnv that matches the local signature and
all required signatures.
tcRnMergeSignatures :: HscEnv -> HsParsedModule -> TcGblEnv -> ModIface -> IO (Messages TcRnMessage, Maybe TcGblEnv) Source #
Top-level driver for signature merging (run after typechecking
an hsig file).
tcRnInstantiateSignature :: HscEnv -> Module -> RealSrcSpan -> IO (Messages TcRnMessage, Maybe TcGblEnv) Source #
Top-level driver for signature instantiation (run when compiling
an hsig file.)
loadUnqualIfaces :: HscEnv -> InteractiveContext -> TcM () Source #
badReexportedBootThing :: Bool -> Name -> Name -> TcRnMessage Source #
Compares two things for equivalence between boot-file and normal code, reporting an error if they don't match up.
missingBootThing :: Bool -> Name -> String -> TcRnMessage Source #
getRenamedStuff :: TcGblEnv -> RenamedStuff Source #
Extract the renamed information from TcGblEnv.