ghc-8.0.2: The GHC API

Safe Haskell | None
Language | Haskell2010

TcRnMonad

Contents

- Initalisation
- Simple accessors
- Arrow scopes
- Unique supply
- Accessing input/output
- Debugging
- Typechecker global environment
- Error management
- Shared error message stuff: renamer and typechecker
- Context management for the type checker
- Error message generation (type checker)
- Type constraints
- Template Haskell context
- Safe Haskell context
- Stuff for the renamer's local env
- Stuff for interface decls
- Types etc.
- Orphan instances

Synopsis

- initTc :: HscEnv -> HscSource -> Bool -> Module -> RealSrcSpan -> TcM r -> IO (Messages, Maybe r)
- initTcInteractive :: HscEnv -> TcM a -> IO (Messages, Maybe a)
- initTcForLookup :: HscEnv -> TcM a -> IO a
- initTcRnIf :: Char -> HscEnv -> gbl -> lcl -> TcRnIf gbl lcl a -> IO a
- discardResult :: TcM a -> TcM ()
- getTopEnv :: TcRnIf gbl lcl HscEnv
- updTopEnv :: (HscEnv -> HscEnv) -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
- getGblEnv :: TcRnIf gbl lcl gbl
- updGblEnv :: (gbl -> gbl) -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
- setGblEnv :: gbl -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
- getLclEnv :: TcRnIf gbl lcl lcl
- updLclEnv :: (lcl -> lcl) -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
- setLclEnv :: lcl' -> TcRnIf gbl lcl' a -> TcRnIf gbl lcl a
- getEnvs :: TcRnIf gbl lcl (gbl, lcl)
- setEnvs :: (gbl', lcl') -> TcRnIf gbl' lcl' a -> TcRnIf gbl lcl a
- xoptM :: Extension -> TcRnIf gbl lcl Bool
- doptM :: DumpFlag -> TcRnIf gbl lcl Bool
- goptM :: GeneralFlag -> TcRnIf gbl lcl Bool
- woptM :: WarningFlag -> TcRnIf gbl lcl Bool
- setXOptM :: Extension -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
- unsetXOptM :: Extension -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
- unsetGOptM :: GeneralFlag -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
- unsetWOptM :: WarningFlag -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
- whenDOptM :: DumpFlag -> TcRnIf gbl lcl () -> TcRnIf gbl lcl ()
- whenGOptM :: GeneralFlag -> TcRnIf gbl lcl () -> TcRnIf gbl lcl ()
- whenWOptM :: WarningFlag -> TcRnIf gbl lcl () -> TcRnIf gbl lcl ()
- whenXOptM :: Extension -> TcRnIf gbl lcl () -> TcRnIf gbl lcl ()
- getGhcMode :: TcRnIf gbl lcl GhcMode
- withDoDynamicToo :: TcRnIf gbl lcl a -> TcRnIf gbl lcl a
- getEpsVar :: TcRnIf gbl lcl (TcRef ExternalPackageState)
- getEps :: TcRnIf gbl lcl ExternalPackageState
- updateEps :: (ExternalPackageState -> (ExternalPackageState, a)) -> TcRnIf gbl lcl a
- updateEps_ :: (ExternalPackageState -> ExternalPackageState) -> TcRnIf gbl lcl ()
- getHpt :: TcRnIf gbl lcl HomePackageTable
- getEpsAndHpt :: TcRnIf gbl lcl (ExternalPackageState, HomePackageTable)
- newArrowScope :: TcM a -> TcM a
- escapeArrowScope :: TcM a -> TcM a
- newUnique :: TcRnIf gbl lcl Unique
- newUniqueSupply :: TcRnIf gbl lcl UniqSupply
- newLocalName :: Name -> TcM Name
- newName :: OccName -> TcM Name
- newSysName :: OccName -> TcRnIf gbl lcl Name
- newSysLocalId :: FastString -> TcType -> TcRnIf gbl lcl TcId
- newSysLocalIds :: FastString -> [TcType] -> TcRnIf gbl lcl [TcId]
- newTcRef :: a -> TcRnIf gbl lcl (TcRef a)
- readTcRef :: TcRef a -> TcRnIf gbl lcl a
- writeTcRef :: TcRef a -> a -> TcRnIf gbl lcl ()
- updTcRef :: TcRef a -> (a -> a) -> TcRnIf gbl lcl ()
- traceTc :: String -> SDoc -> TcRn ()
- traceRn :: SDoc -> TcRn ()
- traceOptTcRn :: DumpFlag -> SDoc -> TcRn ()
- traceTcRn :: DumpFlag -> SDoc -> TcRn ()
- getPrintUnqualified :: DynFlags -> TcRn PrintUnqualified
- printForUserTcRn :: SDoc -> TcRn ()
- debugDumpTcRn :: SDoc -> TcRn ()
- traceIf :: SDoc -> TcRnIf m n ()
- traceHiDiffs :: SDoc -> TcRnIf m n ()
- traceOptIf :: DumpFlag -> SDoc -> TcRnIf m n ()
- debugTc :: TcM () -> TcM ()
- setModule :: Module -> TcRn a -> TcRn a
- getIsGHCi :: TcRn Bool
- getGHCiMonad :: TcRn Name
- getInteractivePrintName :: TcRn Name
- tcIsHsBootOrSig :: TcRn Bool
- tcSelfBootInfo :: TcRn SelfBootInfo
- getGlobalRdrEnv :: TcRn GlobalRdrEnv
- getRdrEnvs :: TcRn (GlobalRdrEnv, LocalRdrEnv)
- getImports :: TcRn ImportAvails
- getFixityEnv :: TcRn FixityEnv
- extendFixityEnv :: [(Name, FixItem)] -> RnM a -> RnM a
- getRecFieldEnv :: TcRn RecFieldEnv
- getDeclaredDefaultTys :: TcRn (Maybe [Type])
- addDependentFiles :: [FilePath] -> TcRn ()
- getSrcSpanM :: TcRn SrcSpan
- setSrcSpan :: SrcSpan -> TcRn a -> TcRn a
- addLocM :: (a -> TcM b) -> Located a -> TcM b
- wrapLocM :: (a -> TcM b) -> Located a -> TcM (Located b)
- wrapLocFstM :: (a -> TcM (b, c)) -> Located a -> TcM (Located b, c)
- wrapLocSndM :: (a -> TcM (b, c)) -> Located a -> TcM (b, Located c)
- getErrsVar :: TcRn (TcRef Messages)
- setErrsVar :: TcRef Messages -> TcRn a -> TcRn a
- addErr :: MsgDoc -> TcRn ()
- failWith :: MsgDoc -> TcRn a
- failAt :: SrcSpan -> MsgDoc -> TcRn a
- addErrAt :: SrcSpan -> MsgDoc -> TcRn ()
- addErrs :: [(SrcSpan, MsgDoc)] -> TcRn ()
- checkErr :: Bool -> MsgDoc -> TcRn ()
- addMessages :: Messages -> TcRn ()
- discardWarnings :: TcRn a -> TcRn a
- mkLongErrAt :: SrcSpan -> MsgDoc -> MsgDoc -> TcRn ErrMsg
- mkErrDocAt :: SrcSpan -> ErrDoc -> TcRn ErrMsg
- addLongErrAt :: SrcSpan -> MsgDoc -> MsgDoc -> TcRn ()
- reportErrors :: [ErrMsg] -> TcM ()
- reportError :: ErrMsg -> TcRn ()
- reportWarning :: WarnReason -> ErrMsg -> TcRn ()
- recoverM :: TcRn r -> TcRn r -> TcRn r
- mapAndRecoverM :: (a -> TcRn b) -> [a] -> TcRn [b]
- mapAndReportM :: (a -> TcRn b) -> [a] -> TcRn [b]
- tryTc :: TcRn a -> TcRn (Messages, Maybe a)
- askNoErrs :: TcRn a -> TcRn (a, Bool)
- discardErrs :: TcRn a -> TcRn a
- tryTcErrs :: TcRn a -> TcRn (Messages, Maybe a)
- tryTcLIE_ :: TcM r -> TcM r -> TcM r
- checkNoErrs :: TcM r -> TcM r
- whenNoErrs :: TcM () -> TcM ()
- ifErrsM :: TcRn r -> TcRn r -> TcRn r
- failIfErrsM :: TcRn ()
- checkTH :: a -> String -> TcRn ()
- failTH :: Outputable a => a -> String -> TcRn x
- getErrCtxt :: TcM [ErrCtxt]
- setErrCtxt :: [ErrCtxt] -> TcM a -> TcM a
- addErrCtxt :: MsgDoc -> TcM a -> TcM a
- addErrCtxtM :: (TidyEnv -> TcM (TidyEnv, MsgDoc)) -> TcM a -> TcM a
- addLandmarkErrCtxt :: MsgDoc -> TcM a -> TcM a
- addLandmarkErrCtxtM :: (TidyEnv -> TcM (TidyEnv, MsgDoc)) -> TcM a -> TcM a
- updCtxt :: ([ErrCtxt] -> [ErrCtxt]) -> TcM a -> TcM a
- popErrCtxt :: TcM a -> TcM a
- getCtLocM :: CtOrigin -> Maybe TypeOrKind -> TcM CtLoc
- setCtLocM :: CtLoc -> TcM a -> TcM a
- addErrTc :: MsgDoc -> TcM ()
- addErrsTc :: [MsgDoc] -> TcM ()
- addErrTcM :: (TidyEnv, MsgDoc) -> TcM ()
- mkErrTcM :: (TidyEnv, MsgDoc) -> TcM ErrMsg
- failWithTc :: MsgDoc -> TcM a
- failWithTcM :: (TidyEnv, MsgDoc) -> TcM a
- checkTc :: Bool -> MsgDoc -> TcM ()
- checkTcM :: Bool -> (TidyEnv, MsgDoc) -> TcM ()
- failIfTc :: Bool -> MsgDoc -> TcM ()
- failIfTcM :: Bool -> (TidyEnv, MsgDoc) -> TcM ()
- warnIf :: WarnReason -> Bool -> MsgDoc -> TcRn ()
- warnTc :: WarnReason -> Bool -> MsgDoc -> TcM ()
- warnTcM :: WarnReason -> Bool -> (TidyEnv, MsgDoc) -> TcM ()
- addWarnTc :: WarnReason -> MsgDoc -> TcM ()
- addWarnTcM :: WarnReason -> (TidyEnv, MsgDoc) -> TcM ()
- addWarn :: WarnReason -> MsgDoc -> TcRn ()
- addWarnAt :: WarnReason -> SrcSpan -> MsgDoc -> TcRn ()
- add_warn :: WarnReason -> MsgDoc -> MsgDoc -> TcRn ()
- tcInitTidyEnv :: TcM TidyEnv
- tcInitOpenTidyEnv :: [TyCoVar] -> TcM TidyEnv
- mkErrInfo :: TidyEnv -> [ErrCtxt] -> TcM SDoc
- newTcEvBinds :: TcM EvBindsVar
- addTcEvBind :: EvBindsVar -> EvBind -> TcM ()
- getTcEvBinds :: EvBindsVar -> TcM (Bag EvBind)
- getTcEvBindsMap :: EvBindsVar -> TcM EvBindMap
- chooseUniqueOccTc :: (OccSet -> OccName) -> TcM OccName
- getConstraintVar :: TcM (TcRef WantedConstraints)
- setConstraintVar :: TcRef WantedConstraints -> TcM a -> TcM a
- emitConstraints :: WantedConstraints -> TcM ()
- emitSimple :: Ct -> TcM ()
- emitSimples :: Cts -> TcM ()
- emitImplication :: Implication -> TcM ()
- emitImplications :: Bag Implication -> TcM ()
- emitInsoluble :: Ct -> TcM ()
- discardConstraints :: TcM a -> TcM a
- captureConstraints :: TcM a -> TcM (a, WantedConstraints)
- captureTopConstraints :: TcM a -> TcM (a, WantedConstraints)
- pushLevelAndCaptureConstraints :: TcM a -> TcM (TcLevel, WantedConstraints, a)
- pushTcLevelM_ :: TcM a -> TcM a
- pushTcLevelM :: TcM a -> TcM (a, TcLevel)
- getTcLevel :: TcM TcLevel
- setTcLevel :: TcLevel -> TcM a -> TcM a
- isTouchableTcM :: TcTyVar -> TcM Bool
- getLclTypeEnv :: TcM TcTypeEnv
- setLclTypeEnv :: TcLclEnv -> TcM a -> TcM a
- traceTcConstraints :: String -> TcM ()
- emitWildCardHoleConstraints :: [(Name, TcTyVar)] -> TcM ()
- recordThUse :: TcM ()
- recordThSpliceUse :: TcM ()
- recordTopLevelSpliceLoc :: SrcSpan -> TcM ()
- getTopLevelSpliceLocs :: TcM (Set RealSrcSpan)
- keepAlive :: Name -> TcRn ()
- getStage :: TcM ThStage
- getStageAndBindLevel :: Name -> TcRn (Maybe (TopLevelFlag, ThLevel, ThStage))
- setStage :: ThStage -> TcM a -> TcRn a
- addModFinalizersWithLclEnv :: ThModFinalizers -> TcM ()
- recordUnsafeInfer :: WarningMessages -> TcM ()
- finalSafeMode :: DynFlags -> TcGblEnv -> IO SafeHaskellMode
- fixSafeInstances :: SafeHaskellMode -> [ClsInst] -> [ClsInst]
- getLocalRdrEnv :: RnM LocalRdrEnv
- setLocalRdrEnv :: LocalRdrEnv -> RnM a -> RnM a
- mkIfLclEnv :: Module -> SDoc -> IfLclEnv
- initIfaceTcRn :: IfG a -> TcRn a
- initIfaceCheck :: HscEnv -> IfG a -> IO a
- initIfaceTc :: ModIface -> (TcRef TypeEnv -> IfL a) -> TcRnIf gbl lcl a
- initIfaceLcl :: Module -> SDoc -> IfL a -> IfM lcl a
- getIfModule :: IfL Module
- failIfM :: MsgDoc -> IfL a
- forkM_maybe :: SDoc -> IfL a -> IfL (Maybe a)
- forkM :: SDoc -> IfL a -> IfL a
- module TcRnTypes
- module IOEnv

# Initalisation

initTc :: HscEnv -> HscSource -> Bool -> Module -> RealSrcSpan -> TcM r -> IO (Messages, Maybe r) Source #

Setup the initial typechecking environment

initTcInteractive :: HscEnv -> TcM a -> IO (Messages, Maybe a) Source #

initTcForLookup :: HscEnv -> TcM a -> IO a Source #

initTcRnIf :: Char -> HscEnv -> gbl -> lcl -> TcRnIf gbl lcl a -> IO a Source #

# Simple accessors

discardResult :: TcM a -> TcM () Source #

getTopEnv :: TcRnIf gbl lcl HscEnv Source #

updTopEnv :: (HscEnv -> HscEnv) -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a Source #

getGblEnv :: TcRnIf gbl lcl gbl Source #

updGblEnv :: (gbl -> gbl) -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a Source #

setGblEnv :: gbl -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a Source #

getLclEnv :: TcRnIf gbl lcl lcl Source #

updLclEnv :: (lcl -> lcl) -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a Source #

setLclEnv :: lcl' -> TcRnIf gbl lcl' a -> TcRnIf gbl lcl a Source #

getEnvs :: TcRnIf gbl lcl (gbl, lcl) Source #

setEnvs :: (gbl', lcl') -> TcRnIf gbl' lcl' a -> TcRnIf gbl lcl a Source #

xoptM :: Extension -> TcRnIf gbl lcl Bool Source #

doptM :: DumpFlag -> TcRnIf gbl lcl Bool Source #

goptM :: GeneralFlag -> TcRnIf gbl lcl Bool Source #

woptM :: WarningFlag -> TcRnIf gbl lcl Bool Source #

setXOptM :: Extension -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a Source #

unsetXOptM :: Extension -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a Source #

unsetGOptM :: GeneralFlag -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a Source #

unsetWOptM :: WarningFlag -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a Source #

whenDOptM :: DumpFlag -> TcRnIf gbl lcl () -> TcRnIf gbl lcl () Source #

Do it flag is true

whenGOptM :: GeneralFlag -> TcRnIf gbl lcl () -> TcRnIf gbl lcl () Source #

whenWOptM :: WarningFlag -> TcRnIf gbl lcl () -> TcRnIf gbl lcl () Source #

whenXOptM :: Extension -> TcRnIf gbl lcl () -> TcRnIf gbl lcl () Source #

getGhcMode :: TcRnIf gbl lcl GhcMode Source #

withDoDynamicToo :: TcRnIf gbl lcl a -> TcRnIf gbl lcl a Source #

getEpsVar :: TcRnIf gbl lcl (TcRef ExternalPackageState) Source #

getEps :: TcRnIf gbl lcl ExternalPackageState Source #

updateEps :: (ExternalPackageState -> (ExternalPackageState, a)) -> TcRnIf gbl lcl a Source #

Update the external package state. Returns the second result of the modifier function.

This is an atomic operation and forces evaluation of the modified EPS in order to avoid space leaks.

updateEps_ :: (ExternalPackageState -> ExternalPackageState) -> TcRnIf gbl lcl () Source #

Update the external package state.

This is an atomic operation and forces evaluation of the modified EPS in order to avoid space leaks.

getHpt :: TcRnIf gbl lcl HomePackageTable Source #

getEpsAndHpt :: TcRnIf gbl lcl (ExternalPackageState, HomePackageTable) Source #

# Arrow scopes

newArrowScope :: TcM a -> TcM a Source #

escapeArrowScope :: TcM a -> TcM a Source #

# Unique supply

newUnique :: TcRnIf gbl lcl Unique Source #

newUniqueSupply :: TcRnIf gbl lcl UniqSupply Source #

newLocalName :: Name -> TcM Name Source #

newName :: OccName -> TcM Name Source #

newSysName :: OccName -> TcRnIf gbl lcl Name Source #

newSysLocalId :: FastString -> TcType -> TcRnIf gbl lcl TcId Source #

newSysLocalIds :: FastString -> [TcType] -> TcRnIf gbl lcl [TcId] Source #

# Accessing input/output

newTcRef :: a -> TcRnIf gbl lcl (TcRef a) Source #

readTcRef :: TcRef a -> TcRnIf gbl lcl a Source #

writeTcRef :: TcRef a -> a -> TcRnIf gbl lcl () Source #

updTcRef :: TcRef a -> (a -> a) -> TcRnIf gbl lcl () Source #

# Debugging

traceTc :: String -> SDoc -> TcRn () Source #

traceRn :: SDoc -> TcRn () Source #

traceOptTcRn :: DumpFlag -> SDoc -> TcRn () Source #

Output a doc if the given `DumpFlag` is set.

By default this logs to stdout However, if the `-ddump-to-file` flag is set, then this will dump output to a file

Just a wrapper for `dumpSDoc`

traceTcRn :: DumpFlag -> SDoc -> TcRn () Source #

Unconditionally dump some trace output

The DumpFlag is used only to set the output filename for --dump-to-file, not to decide whether or not to output That part is done by the caller

getPrintUnqualified :: DynFlags -> TcRn PrintUnqualified Source #

printForUserTcRn :: SDoc -> TcRn () Source #

Like logInfoTcRn, but for user consumption

debugDumpTcRn :: SDoc -> TcRn () Source #

Typechecker debug

traceIf :: SDoc -> TcRnIf m n () Source #

traceHiDiffs :: SDoc -> TcRnIf m n () Source #

traceOptIf :: DumpFlag -> SDoc -> TcRnIf m n () Source #

debugTc :: TcM () -> TcM () Source #

# Typechecker global environment

setModule :: Module -> TcRn a -> TcRn a Source #

getIsGHCi :: TcRn Bool Source #

getGHCiMonad :: TcRn Name Source #

getInteractivePrintName :: TcRn Name Source #

tcIsHsBootOrSig :: TcRn Bool Source #

tcSelfBootInfo :: TcRn SelfBootInfo Source #

getGlobalRdrEnv :: TcRn GlobalRdrEnv Source #

getRdrEnvs :: TcRn (GlobalRdrEnv, LocalRdrEnv) Source #

getImports :: TcRn ImportAvails Source #

getFixityEnv :: TcRn FixityEnv Source #

extendFixityEnv :: [(Name, FixItem)] -> RnM a -> RnM a Source #

getRecFieldEnv :: TcRn RecFieldEnv Source #

getDeclaredDefaultTys :: TcRn (Maybe [Type]) Source #

addDependentFiles :: [FilePath] -> TcRn () Source #

# Error management

getSrcSpanM :: TcRn SrcSpan Source #

setSrcSpan :: SrcSpan -> TcRn a -> TcRn a Source #

addLocM :: (a -> TcM b) -> Located a -> TcM b Source #

wrapLocM :: (a -> TcM b) -> Located a -> TcM (Located b) Source #

wrapLocFstM :: (a -> TcM (b, c)) -> Located a -> TcM (Located b, c) Source #

wrapLocSndM :: (a -> TcM (b, c)) -> Located a -> TcM (b, Located c) Source #

getErrsVar :: TcRn (TcRef Messages) Source #

setErrsVar :: TcRef Messages -> TcRn a -> TcRn a Source #

addErr :: MsgDoc -> TcRn () Source #

failWith :: MsgDoc -> TcRn a Source #

failAt :: SrcSpan -> MsgDoc -> TcRn a Source #

addErrAt :: SrcSpan -> MsgDoc -> TcRn () Source #

addErrs :: [(SrcSpan, MsgDoc)] -> TcRn () Source #

checkErr :: Bool -> MsgDoc -> TcRn () Source #

addMessages :: Messages -> TcRn () Source #

discardWarnings :: TcRn a -> TcRn a Source #

# Shared error message stuff: renamer and typechecker

mkLongErrAt :: SrcSpan -> MsgDoc -> MsgDoc -> TcRn ErrMsg Source #

mkErrDocAt :: SrcSpan -> ErrDoc -> TcRn ErrMsg Source #

addLongErrAt :: SrcSpan -> MsgDoc -> MsgDoc -> TcRn () Source #

reportErrors :: [ErrMsg] -> TcM () Source #

reportError :: ErrMsg -> TcRn () Source #

reportWarning :: WarnReason -> ErrMsg -> TcRn () Source #

recoverM :: TcRn r -> TcRn r -> TcRn r Source #

mapAndRecoverM :: (a -> TcRn b) -> [a] -> TcRn [b] Source #

mapAndReportM :: (a -> TcRn b) -> [a] -> TcRn [b] Source #

Succeeds if applying the argument to all members of the lists succeeds, but nevertheless runs it on all arguments, to collect all errors.

tryTc :: TcRn a -> TcRn (Messages, Maybe a) Source #

askNoErrs :: TcRn a -> TcRn (a, Bool) Source #

discardErrs :: TcRn a -> TcRn a Source #

tryTcErrs :: TcRn a -> TcRn (Messages, Maybe a) Source #

tryTcLIE_ :: TcM r -> TcM r -> TcM r Source #

checkNoErrs :: TcM r -> TcM r Source #

whenNoErrs :: TcM () -> TcM () Source #

ifErrsM :: TcRn r -> TcRn r -> TcRn r Source #

failIfErrsM :: TcRn () Source #

checkTH :: a -> String -> TcRn () Source #

failTH :: Outputable a => a -> String -> TcRn x Source #

# Context management for the type checker

getErrCtxt :: TcM [ErrCtxt] Source #

setErrCtxt :: [ErrCtxt] -> TcM a -> TcM a Source #

addErrCtxt :: MsgDoc -> TcM a -> TcM a Source #

Add a fixed message to the error context. This message should not do any tidying.

addErrCtxtM :: (TidyEnv -> TcM (TidyEnv, MsgDoc)) -> TcM a -> TcM a Source #

Add a message to the error context. This message may do tidying.

addLandmarkErrCtxt :: MsgDoc -> TcM a -> TcM a Source #

Add a fixed landmark message to the error context. A landmark message is always sure to be reported, even if there is a lot of context. It also doesn't count toward the maximum number of contexts reported.

addLandmarkErrCtxtM :: (TidyEnv -> TcM (TidyEnv, MsgDoc)) -> TcM a -> TcM a Source #

Variant of `addLandmarkErrCtxt` that allows for monadic operations and tidying.

updCtxt :: ([ErrCtxt] -> [ErrCtxt]) -> TcM a -> TcM a Source #

popErrCtxt :: TcM a -> TcM a Source #

getCtLocM :: CtOrigin -> Maybe TypeOrKind -> TcM CtLoc Source #

setCtLocM :: CtLoc -> TcM a -> TcM a Source #

# Error message generation (type checker)

addErrTc :: MsgDoc -> TcM () Source #

addErrsTc :: [MsgDoc] -> TcM () Source #

addErrTcM :: (TidyEnv, MsgDoc) -> TcM () Source #

mkErrTcM :: (TidyEnv, MsgDoc) -> TcM ErrMsg Source #

failWithTc :: MsgDoc -> TcM a Source #

failWithTcM :: (TidyEnv, MsgDoc) -> TcM a Source #

checkTc :: Bool -> MsgDoc -> TcM () Source #

checkTcM :: Bool -> (TidyEnv, MsgDoc) -> TcM () Source #

failIfTc :: Bool -> MsgDoc -> TcM () Source #

failIfTcM :: Bool -> (TidyEnv, MsgDoc) -> TcM () Source #

warnIf :: WarnReason -> Bool -> MsgDoc -> TcRn () Source #

Display a warning if a condition is met.

warnTc :: WarnReason -> Bool -> MsgDoc -> TcM () Source #

Display a warning if a condition is met.

warnTcM :: WarnReason -> Bool -> (TidyEnv, MsgDoc) -> TcM () Source #

Display a warning if a condition is met.

addWarnTc :: WarnReason -> MsgDoc -> TcM () Source #

Display a warning in the current context.

addWarnTcM :: WarnReason -> (TidyEnv, MsgDoc) -> TcM () Source #

Display a warning in a given context.

addWarn :: WarnReason -> MsgDoc -> TcRn () Source #

Display a warning for the current source location.

addWarnAt :: WarnReason -> SrcSpan -> MsgDoc -> TcRn () Source #

Display a warning for a given source location.

add_warn :: WarnReason -> MsgDoc -> MsgDoc -> TcRn () Source #

Display a warning, with an optional flag, for the current source location.

tcInitTidyEnv :: TcM TidyEnv Source #

tcInitOpenTidyEnv :: [TyCoVar] -> TcM TidyEnv Source #

Get a `TidyEnv` that includes mappings for all vars free in the given type. Useful when tidying open types.

mkErrInfo :: TidyEnv -> [ErrCtxt] -> TcM SDoc Source #

# Type constraints

newTcEvBinds :: TcM EvBindsVar Source #

addTcEvBind :: EvBindsVar -> EvBind -> TcM () Source #

getTcEvBinds :: EvBindsVar -> TcM (Bag EvBind) Source #

getTcEvBindsMap :: EvBindsVar -> TcM EvBindMap Source #

chooseUniqueOccTc :: (OccSet -> OccName) -> TcM OccName Source #

getConstraintVar :: TcM (TcRef WantedConstraints) Source #

setConstraintVar :: TcRef WantedConstraints -> TcM a -> TcM a Source #

emitConstraints :: WantedConstraints -> TcM () Source #

emitSimple :: Ct -> TcM () Source #

emitSimples :: Cts -> TcM () Source #

emitImplication :: Implication -> TcM () Source #

emitImplications :: Bag Implication -> TcM () Source #

emitInsoluble :: Ct -> TcM () Source #

discardConstraints :: TcM a -> TcM a Source #

Throw out any constraints emitted by the thing_inside

captureConstraints :: TcM a -> TcM (a, WantedConstraints) Source #

captureTopConstraints :: TcM a -> TcM (a, WantedConstraints) Source #

pushLevelAndCaptureConstraints :: TcM a -> TcM (TcLevel, WantedConstraints, a) Source #

pushTcLevelM_ :: TcM a -> TcM a Source #

pushTcLevelM :: TcM a -> TcM (a, TcLevel) Source #

getTcLevel :: TcM TcLevel Source #

setTcLevel :: TcLevel -> TcM a -> TcM a Source #

isTouchableTcM :: TcTyVar -> TcM Bool Source #

getLclTypeEnv :: TcM TcTypeEnv Source #

setLclTypeEnv :: TcLclEnv -> TcM a -> TcM a Source #

traceTcConstraints :: String -> TcM () Source #

emitWildCardHoleConstraints :: [(Name, TcTyVar)] -> TcM () Source #

# Template Haskell context

recordThUse :: TcM () Source #

recordThSpliceUse :: TcM () Source #

recordTopLevelSpliceLoc :: SrcSpan -> TcM () Source #

When generating an out-of-scope error message for a variable matching a binding in a later inter-splice group, the typechecker uses the splice locations to provide details in the message about the scope of that binding.

getTopLevelSpliceLocs :: TcM (Set RealSrcSpan) Source #

keepAlive :: Name -> TcRn () Source #

getStage :: TcM ThStage Source #

getStageAndBindLevel :: Name -> TcRn (Maybe (TopLevelFlag, ThLevel, ThStage)) Source #

setStage :: ThStage -> TcM a -> TcRn a Source #

addModFinalizersWithLclEnv :: ThModFinalizers -> TcM () Source #

Adds the given modFinalizers to the global environment and set them to use the current local environment.

# Safe Haskell context

recordUnsafeInfer :: WarningMessages -> TcM () Source #

Mark that safe inference has failed See Note [Safe Haskell Overlapping Instances Implementation] although this is used for more than just that failure case.

finalSafeMode :: DynFlags -> TcGblEnv -> IO SafeHaskellMode Source #

Figure out the final correct safe haskell mode

fixSafeInstances :: SafeHaskellMode -> [ClsInst] -> [ClsInst] Source #

Switch instances to safe instances if we're in Safe mode.

# Stuff for the renamer's local env

getLocalRdrEnv :: RnM LocalRdrEnv Source #

setLocalRdrEnv :: LocalRdrEnv -> RnM a -> RnM a Source #

# Stuff for interface decls

mkIfLclEnv :: Module -> SDoc -> IfLclEnv Source #

initIfaceTcRn :: IfG a -> TcRn a Source #

Run an `IfG` (top-level interface monad) computation inside an existing `TcRn` (typecheck-renaming monad) computation by initializing an `IfGblEnv` based on `TcGblEnv`.

initIfaceCheck :: HscEnv -> IfG a -> IO a Source #

initIfaceTc :: ModIface -> (TcRef TypeEnv -> IfL a) -> TcRnIf gbl lcl a Source #

initIfaceLcl :: Module -> SDoc -> IfL a -> IfM lcl a Source #

getIfModule :: IfL Module Source #

failIfM :: MsgDoc -> IfL a Source #

forkM_maybe :: SDoc -> IfL a -> IfL (Maybe a) Source #

forkM :: SDoc -> IfL a -> IfL a Source #

# Types etc.

module TcRnTypes

module IOEnv

# Orphan instances

MonadUnique (IOEnv (Env gbl lcl)) # |
Methods getUniqueSupplyM :: IOEnv (Env gbl lcl) UniqSupply Source # getUniqueM :: IOEnv (Env gbl lcl) Unique Source # getUniquesM :: IOEnv (Env gbl lcl) [Unique] Source #