ghc-8.8.1.20191211: The GHC API
Safe HaskellNone
LanguageHaskell2010

InteractiveEval

Synopsis

Documentation

execStmt Source #

Arguments

:: GhcMonad m 
=> String

a statement (bind or expression)

-> ExecOptions 
-> m ExecResult 

Run a statement in the current interactive context.

execStmt' :: GhcMonad m => GhciLStmt GhcPs -> String -> ExecOptions -> m ExecResult Source #

Like execStmt, but takes a parsed statement as argument. Useful when doing preprocessing on the AST before execution, e.g. in GHCi (see GHCi.UI.runStmt).

data ExecOptions Source #

Constructors

ExecOptions 

Fields

execOptions :: ExecOptions Source #

default ExecOptions

runDeclsWithLocation :: GhcMonad m => String -> Int -> String -> m [Name] Source #

Run some declarations and return any user-visible names that were brought into scope.

runParsedDecls :: GhcMonad m => [LHsDecl GhcPs] -> m [Name] Source #

Like runDeclsWithLocation, but takes parsed declarations as argument. Useful when doing preprocessing on the AST before execution, e.g. in GHCi (see GHCi.UI.runStmt).

isStmt :: DynFlags -> String -> Bool Source #

Returns True if passed string is a statement.

hasImport :: DynFlags -> String -> Bool Source #

Returns True if passed string has an import declaration.

isImport :: DynFlags -> String -> Bool Source #

Returns True if passed string is an import declaration.

isDecl :: DynFlags -> String -> Bool Source #

Returns True if passed string is a declaration but not a splice.

back :: GhcMonad m => Int -> m ([Name], Int, SrcSpan, String) Source #

setContext :: GhcMonad m => [InteractiveImport] -> m () Source #

Set the interactive evaluation context.

(setContext imports) sets the ic_imports field (which in turn determines what is in scope at the prompt) to imports, and constructs the ic_rn_glb_env environment to reflect it.

We retain in scope all the things defined at the prompt, and kept in ic_tythings. (Indeed, they shadow stuff from ic_imports.)

getContext :: GhcMonad m => m [InteractiveImport] Source #

Get the interactive evaluation context, consisting of a pair of the set of modules from which we take the full top-level scope, and the set of modules from which we take just the exports respectively.

getNamesInScope :: GhcMonad m => m [Name] Source #

Returns all names in scope in the current interactive context

getRdrNamesInScope :: GhcMonad m => m [RdrName] Source #

Returns all RdrNames in scope in the current interactive context, excluding any that are internally-generated.

moduleIsInterpreted :: GhcMonad m => Module -> m Bool Source #

Returns True if the specified module is interpreted, and hence has its full top-level scope available.

getInfo :: GhcMonad m => Bool -> Name -> m (Maybe (TyThing, Fixity, [ClsInst], [FamInst], SDoc)) Source #

Looks up an identifier in the current interactive context (for :info) Filter the instances by the ones whose tycons (or clases resp) are in scope (qualified or otherwise). Otherwise we list a whole lot too many! The exact choice of which ones to show, and which to hide, is a judgement call. (see Trac #1581)

exprType :: GhcMonad m => TcRnExprMode -> String -> m Type Source #

Get the type of an expression Returns the type as described by TcRnExprMode

typeKind :: GhcMonad m => Bool -> String -> m (Type, Kind) Source #

Get the kind of a type

parseName :: GhcMonad m => String -> m [Name] Source #

Parses a string as an identifier, and returns the list of Names that the identifier can refer to in the current interactive context.

data GetDocsFailure Source #

Failure modes for getDocs.

Constructors

NameHasNoModule Name

nameModule_maybe returned Nothing.

NoDocsInIface Module Bool

True: The module was compiled. False: The module was :loaded.

InteractiveName

The Name was defined interactively.

Instances

Instances details
Outputable GetDocsFailure # 
Instance details

Defined in InteractiveEval

parseExpr :: GhcMonad m => String -> m (LHsExpr GhcPs) Source #

Parse an expression, the parsed expression can be further processed and passed to compileParsedExpr.

compileExpr :: GhcMonad m => String -> m HValue Source #

Compile an expression, run it, and deliver the resulting HValue.

dynCompileExpr :: GhcMonad m => String -> m Dynamic Source #

Compile an expression, run it and return the result as a Dynamic.

compileExprRemote :: GhcMonad m => String -> m ForeignHValue Source #

Compile an expression, run it, and deliver the resulting HValue.

compileParsedExprRemote :: GhcMonad m => LHsExpr GhcPs -> m ForeignHValue Source #

Compile a parsed expression (before renaming), run it, and deliver the resulting HValue.

data Term Source #

Constructors

Term 

Fields

Prim 

Fields

Suspension 

Fields

NewtypeWrap 

Fields

RefWrap 

Fields

Instances

Instances details
Outputable Term # 
Instance details

Defined in RtClosureInspect