ghci-9.10.0.20240426: The library supporting GHC's interactive interpreter
Safe HaskellNone
LanguageHaskell2010

GHCi.Message

Description

Remote GHCi message types and serialization.

For details on Remote GHCi, see Note [Remote GHCi] in compilerGHCRuntime/Interpreter.hs.

Synopsis

Documentation

data Message a where Source #

A Message a is a message that returns a value of type a. These are requests sent from GHC to the server.

Constructors

Shutdown :: Message ()

Exit the iserv process

RtsRevertCAFs :: Message () 
InitLinker :: Message () 
LookupSymbol :: String -> Message (Maybe (RemotePtr ())) 
LookupClosure :: String -> Message (Maybe HValueRef) 
LoadDLL :: String -> Message (Maybe String) 
LoadArchive :: String -> Message () 
LoadObj :: String -> Message () 
UnloadObj :: String -> Message () 
AddLibrarySearchPath :: String -> Message (RemotePtr ()) 
RemoveLibrarySearchPath :: RemotePtr () -> Message Bool 
ResolveObjs :: Message Bool 
FindSystemLibrary :: String -> Message (Maybe String) 
CreateBCOs :: [ResolvedBCO] -> Message [HValueRef]

Create a set of BCO objects, and return HValueRefs to them See createBCOs in compilerGHCRuntime/Interpreter.hs. NB: this has a custom Binary behavior, see Note [Parallelize CreateBCOs serialization]

FreeHValueRefs :: [HValueRef] -> Message ()

Release HValueRefs

AddSptEntry :: Fingerprint -> HValueRef -> Message ()

Add entries to the Static Pointer Table

MallocData :: ByteString -> Message (RemotePtr ())

Malloc some data and return a RemotePtr to it

MallocStrings :: [ByteString] -> Message [RemotePtr ()] 
PrepFFI :: FFIConv -> [FFIType] -> FFIType -> Message (RemotePtr C_ffi_cif)

Calls prepareForeignCall

FreeFFI :: RemotePtr C_ffi_cif -> Message ()

Free data previously created by PrepFFI

MkConInfoTable :: Bool -> Int -> Int -> Int -> Int -> ByteString -> Message (RemotePtr StgInfoTable)

Create an info table for a constructor

EvalStmt :: EvalOpts -> EvalExpr HValueRef -> Message (EvalStatus_ [HValueRef] [HValueRef])

Evaluate a statement

ResumeStmt :: EvalOpts -> RemoteRef (ResumeContext [HValueRef]) -> Message (EvalStatus_ [HValueRef] [HValueRef])

Resume evaluation of a statement after a breakpoint

AbandonStmt :: RemoteRef (ResumeContext [HValueRef]) -> Message ()

Abandon evaluation of a statement after a breakpoint

EvalString :: HValueRef -> Message (EvalResult String)

Evaluate something of type IO String

EvalStringToString :: HValueRef -> String -> Message (EvalResult String)

Evaluate something of type String -> IO String

EvalIO :: HValueRef -> Message (EvalResult ())

Evaluate something of type IO ()

MkCostCentres :: String -> [(String, String)] -> Message [RemotePtr CostCentre]

Create a set of CostCentres with the same module name

CostCentreStackInfo :: RemotePtr CostCentreStack -> Message [String]

Show a CostCentreStack as a [String]

NewBreakArray :: Int -> Message (RemoteRef BreakArray)

Create a new array of breakpoint flags

SetupBreakpoint :: RemoteRef BreakArray -> Int -> Int -> Message ()

Set how many times a breakpoint should be ignored also used for enable/disable

BreakpointStatus :: RemoteRef BreakArray -> Int -> Message Bool

Query the status of a breakpoint (True = enabled)

GetBreakpointVar :: HValueRef -> Int -> Message (Maybe HValueRef)

Get a reference to a free variable at a breakpoint

StartTH :: Message (RemoteRef (IORef QState))

Start a new TH module, return a state token that should be

RunTH :: RemoteRef (IORef QState) -> HValueRef -> THResultType -> Maybe Loc -> Message (QResult ByteString)

Evaluate a TH computation.

Returns a ByteString, because we have to force the result before returning it to ensure there are no errors lurking in it. The TH types don't have NFData instances, and even if they did, we have to serialize the value anyway, so we might as well serialize it to force it.

RunModFinalizers :: RemoteRef (IORef QState) -> [RemoteRef (Q ())] -> Message (QResult ())

Run the given mod finalizers.

GetClosure :: HValueRef -> Message (GenClosure HValueRef)

Remote interface to GHC.Exts.Heap.getClosureData. This is used by the GHCi debugger to inspect values in the heap for :print and type reconstruction.

Seq :: HValueRef -> Message (EvalStatus_ () ())

Evaluate something. This is used to support :force in GHCi.

ResumeSeq :: RemoteRef (ResumeContext ()) -> Message (EvalStatus_ () ())

Resume forcing a free variable in a breakpoint (#2950)

NewBreakModule :: String -> Message (RemotePtr BreakModule)

Allocate a string for a breakpoint module name. This uses an empty dummy type because ModuleName isn't available here.

Instances

Instances details
Show (Message a) Source # 
Instance details

Defined in GHCi.Message

Methods

showsPrec :: Int -> Message a -> ShowS #

show :: Message a -> String #

showList :: [Message a] -> ShowS #

data Msg Source #

Constructors

(Binary a, Show a) => Msg (Message a) 

data THMessage a where Source #

Messages sent back to GHC from GHCi.TH, to implement the methods of Quasi. For an overview of how TH works with Remote GHCi, see Note [Remote Template Haskell] in GHCi.TH.

Constructors

NewName :: String -> THMessage (THResult Name) 
Report :: Bool -> String -> THMessage (THResult ()) 
LookupName :: Bool -> String -> THMessage (THResult (Maybe Name)) 
Reify :: Name -> THMessage (THResult Info) 
ReifyFixity :: Name -> THMessage (THResult (Maybe Fixity)) 
ReifyType :: Name -> THMessage (THResult Type) 
ReifyInstances :: Name -> [Type] -> THMessage (THResult [Dec]) 
ReifyRoles :: Name -> THMessage (THResult [Role]) 
ReifyAnnotations :: AnnLookup -> TypeRep -> THMessage (THResult [ByteString]) 
ReifyModule :: Module -> THMessage (THResult ModuleInfo) 
ReifyConStrictness :: Name -> THMessage (THResult [DecidedStrictness]) 
GetPackageRoot :: THMessage (THResult FilePath) 
AddDependentFile :: FilePath -> THMessage (THResult ()) 
AddTempFile :: String -> THMessage (THResult FilePath) 
AddModFinalizer :: RemoteRef (Q ()) -> THMessage (THResult ()) 
AddCorePlugin :: String -> THMessage (THResult ()) 
AddTopDecls :: [Dec] -> THMessage (THResult ()) 
AddForeignFilePath :: ForeignSrcLang -> FilePath -> THMessage (THResult ()) 
IsExtEnabled :: Extension -> THMessage (THResult Bool) 
ExtsEnabled :: THMessage (THResult [Extension]) 
PutDoc :: DocLoc -> String -> THMessage (THResult ()) 
GetDoc :: DocLoc -> THMessage (THResult (Maybe String)) 
StartRecover :: THMessage () 
EndRecover :: Bool -> THMessage () 
FailIfErrs :: THMessage (THResult ()) 
RunTHDone :: THMessage ()

Indicates that this RunTH is finished, and the next message will be the result of RunTH (a QResult).

Instances

Instances details
Show (THMessage a) Source # 
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Defined in GHCi.Message

data THMsg Source #

Constructors

(Binary a, Show a) => THMsg (THMessage a) 

data QResult a Source #

Template Haskell return values

Constructors

QDone a

RunTH finished successfully; return value follows

QException String

RunTH threw an exception

QFail String

RunTH called fail

Instances

Instances details
Binary a => Binary (QResult a) Source # 
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Methods

put :: QResult a -> Put Source #

get :: Get (QResult a) Source #

putList :: [QResult a] -> Put Source #

Generic (QResult a) Source # 
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Associated Types

type Rep (QResult a) 
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from :: QResult a -> Rep (QResult a) x #

to :: Rep (QResult a) x -> QResult a #

Show a => Show (QResult a) Source # 
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Methods

showsPrec :: Int -> QResult a -> ShowS #

show :: QResult a -> String #

showList :: [QResult a] -> ShowS #

type Rep (QResult a) Source # 
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Defined in GHCi.Message

data EvalStatus_ a b Source #

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Binary a => Binary (EvalStatus_ a b) Source # 
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Generic (EvalStatus_ a b) Source # 
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from :: EvalStatus_ a b -> Rep (EvalStatus_ a b) x #

to :: Rep (EvalStatus_ a b) x -> EvalStatus_ a b #

Show a => Show (EvalStatus_ a b) Source # 
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Defined in GHCi.Message

Methods

showsPrec :: Int -> EvalStatus_ a b -> ShowS #

show :: EvalStatus_ a b -> String #

showList :: [EvalStatus_ a b] -> ShowS #

type Rep (EvalStatus_ a b) Source # 
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data EvalResult a Source #

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Binary a => Binary (EvalResult a) Source # 
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Generic (EvalResult a) Source # 
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type Rep (EvalResult a) 
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type Rep (EvalResult a) = D1 ('MetaData "EvalResult" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "EvalException" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 SerializableException)) :+: C1 ('MetaCons "EvalSuccess" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)))

Methods

from :: EvalResult a -> Rep (EvalResult a) x #

to :: Rep (EvalResult a) x -> EvalResult a #

Show a => Show (EvalResult a) Source # 
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Defined in GHCi.Message

type Rep (EvalResult a) Source # 
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Defined in GHCi.Message

type Rep (EvalResult a) = D1 ('MetaData "EvalResult" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "EvalException" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 SerializableException)) :+: C1 ('MetaCons "EvalSuccess" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)))

data EvalOpts Source #

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Binary EvalOpts Source # 
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Generic EvalOpts Source # 
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Associated Types

type Rep EvalOpts 
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type Rep EvalOpts = D1 ('MetaData "EvalOpts" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "EvalOpts" 'PrefixI 'True) ((S1 ('MetaSel ('Just "useSandboxThread") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "singleStep") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "breakOnException") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "breakOnError") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))))

Methods

from :: EvalOpts -> Rep EvalOpts x #

to :: Rep EvalOpts x -> EvalOpts #

Show EvalOpts Source # 
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type Rep EvalOpts Source # 
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Defined in GHCi.Message

type Rep EvalOpts = D1 ('MetaData "EvalOpts" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "EvalOpts" 'PrefixI 'True) ((S1 ('MetaSel ('Just "useSandboxThread") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "singleStep") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "breakOnException") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "breakOnError") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))))

data EvalExpr a Source #

We can pass simple expressions to EvalStmt, consisting of values and application. This allows us to wrap the statement to be executed in another function, which is used by GHCi to implement :set args and :set prog. It might be worthwhile to extend this little language in the future.

Constructors

EvalThis a 
EvalApp (EvalExpr a) (EvalExpr a) 

Instances

Instances details
Binary a => Binary (EvalExpr a) Source # 
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Generic (EvalExpr a) Source # 
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Associated Types

type Rep (EvalExpr a) 
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Methods

from :: EvalExpr a -> Rep (EvalExpr a) x #

to :: Rep (EvalExpr a) x -> EvalExpr a #

Show a => Show (EvalExpr a) Source # 
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Defined in GHCi.Message

Methods

showsPrec :: Int -> EvalExpr a -> ShowS #

show :: EvalExpr a -> String #

showList :: [EvalExpr a] -> ShowS #

type Rep (EvalExpr a) Source # 
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Defined in GHCi.Message

data EvalBreakpoint Source #

Constructors

EvalBreakpoint 

Fields

Instances

Instances details
Binary EvalBreakpoint Source # 
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Generic EvalBreakpoint Source # 
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Associated Types

type Rep EvalBreakpoint 
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type Rep EvalBreakpoint = D1 ('MetaData "EvalBreakpoint" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "EvalBreakpoint" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String)))
Show EvalBreakpoint Source # 
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Defined in GHCi.Message

type Rep EvalBreakpoint Source # 
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Defined in GHCi.Message

type Rep EvalBreakpoint = D1 ('MetaData "EvalBreakpoint" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "EvalBreakpoint" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String)))

data SerializableException Source #

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Instances details
Binary SerializableException Source # 
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Generic SerializableException Source # 
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type Rep SerializableException 
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type Rep SerializableException = D1 ('MetaData "SerializableException" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "EUserInterrupt" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "EExitCode" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ExitCode)) :+: C1 ('MetaCons "EOtherException" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String))))
Show SerializableException Source # 
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type Rep SerializableException Source # 
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type Rep SerializableException = D1 ('MetaData "SerializableException" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "EUserInterrupt" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "EExitCode" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ExitCode)) :+: C1 ('MetaCons "EOtherException" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String))))

data THResult a Source #

Constructors

THException String 
THComplete a 

Instances

Instances details
Binary a => Binary (THResult a) Source # 
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Generic (THResult a) Source # 
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Defined in GHCi.Message

Associated Types

type Rep (THResult a) 
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Defined in GHCi.Message

type Rep (THResult a) = D1 ('MetaData "THResult" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "THException" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String)) :+: C1 ('MetaCons "THComplete" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)))

Methods

from :: THResult a -> Rep (THResult a) x #

to :: Rep (THResult a) x -> THResult a #

Show a => Show (THResult a) Source # 
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Defined in GHCi.Message

Methods

showsPrec :: Int -> THResult a -> ShowS #

show :: THResult a -> String #

showList :: [THResult a] -> ShowS #

type Rep (THResult a) Source # 
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Defined in GHCi.Message

type Rep (THResult a) = D1 ('MetaData "THResult" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) (C1 ('MetaCons "THException" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String)) :+: C1 ('MetaCons "THComplete" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)))

data THResultType Source #

Constructors

THExp 
THPat 
THType 
THDec 
THAnnWrapper 

Instances

Instances details
Binary THResultType Source # 
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Enum THResultType Source # 
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Generic THResultType Source # 
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Associated Types

type Rep THResultType 
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Defined in GHCi.Message

type Rep THResultType = D1 ('MetaData "THResultType" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) ((C1 ('MetaCons "THExp" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "THPat" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "THType" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "THDec" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "THAnnWrapper" 'PrefixI 'False) (U1 :: Type -> Type))))
Show THResultType Source # 
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type Rep THResultType Source # 
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Defined in GHCi.Message

type Rep THResultType = D1 ('MetaData "THResultType" "GHCi.Message" "ghci-9.10.0.20240426-ddbe" 'False) ((C1 ('MetaCons "THExp" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "THPat" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "THType" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "THDec" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "THAnnWrapper" 'PrefixI 'False) (U1 :: Type -> Type))))

data QState Source #

The server-side Template Haskell state. This is created by the StartTH message. A new one is created per module that GHC typechecks.

Constructors

QState 

Fields

Instances

Instances details
Show QState Source # 
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Defined in GHCi.Message

remoteCall :: Binary a => Pipe -> Message a -> IO a Source #

readPipe :: Pipe -> Get a -> IO a Source #

writePipe :: Pipe -> Put -> IO () Source #

data BreakModule Source #

A dummy type that tags the pointer to a breakpoint's ModuleName, because that type isn't available here.

Orphan instances

Binary PrimType Source # 
Instance details

Binary TsoFlags Source # 
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Binary WhatNext Source # 
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Binary WhyBlocked Source # 
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Binary StgInfoTable Source # 
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Binary CostCentre Source # 
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Binary CostCentreStack Source # 
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Binary IndexTable Source # 
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Binary StgTSOProfInfo Source # 
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Binary ClosureType Source # 
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Binary ExitCode Source # 
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Binary a => Binary (GenClosure a) Source # 
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Binary (FunPtr a) Source # 
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Methods

put :: FunPtr a -> Put Source #

get :: Get (FunPtr a) Source #

putList :: [FunPtr a] -> Put Source #

Binary (Ptr a) Source # 
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Methods

put :: Ptr a -> Put Source #

get :: Get (Ptr a) Source #

putList :: [Ptr a] -> Put Source #