Reflex.Process.GHCi

• Module: Reflex.Process.GHCi
• Description: Run GHCi processes in a reflex application

Documentation

ghci

Arguments

:: (TriggerEvent t m, PerformEvent t m, MonadIO (Performable m), PostBuild t m, MonadIO m, MonadFix m, MonadHold t m)

=> CreateProcess

Command to run to enter GHCi

-> Maybe ByteString

Expression to evaluate whenever GHCi successfully loads modules

-> Event t ()

Ask GHCi to reload

-> m (Ghci t)

Runs a GHCi process and reloads it whenever the provided event fires

ghciWatch :: (TriggerEvent t m, PerformEvent t m, MonadIO (Performable m), PostBuild t m, MonadIO m, MonadFix m, MonadHold t m) => CreateProcess -> Maybe ByteString -> m (Ghci t)

Run a GHCi process that watches for changes to Haskell source files in the current directory and reloads if they are modified

data Ghci t

The output of the GHCi process

Constructors

Ghci

Fields

• _ghci_moduleOut :: Event t ByteString

  stdout output produced when loading modules

• _ghci_moduleErr :: Event t ByteString

  stderr output produced when loading modules

• _ghci_execOut :: Event t ByteString

  stdout output produced while evaluating an expression

• _ghci_execErr :: Event t ByteString

  stderr output produced while evaluating an expression

• _ghci_reload :: Event t ()

  Event that fires when GHCi is reloading

• _ghci_status :: Dynamic t Status

  The current status of the GHCi process

• _ghci_process :: Process t ByteString ByteString

data Status

The state of the GHCi process

Constructors

Status_Initializing

Status_Loading

Status_LoadFailed

Status_LoadSucceeded

Status_Executing

Status_ExecutionFailed

Status_ExecutionSucceeded

Instances

Eq Status

Defined in Reflex.Process.GHCi

Methods

(==) :: Status -> Status -> Bool

(/=) :: Status -> Status -> Bool

Ord Status

Defined in Reflex.Process.GHCi

Methods

compare :: Status -> Status -> Ordering

(<) :: Status -> Status -> Bool

(<=) :: Status -> Status -> Bool

(>) :: Status -> Status -> Bool

(>=) :: Status -> Status -> Bool

max :: Status -> Status -> Status

min :: Status -> Status -> Status

Read Status

Defined in Reflex.Process.GHCi

Methods

readsPrec :: Int -> ReadS Status

readList :: ReadS [Status]

readPrec :: ReadPrec Status

readListPrec :: ReadPrec [Status]

Show Status

Defined in Reflex.Process.GHCi

Methods

showsPrec :: Int -> Status -> ShowS

show :: Status -> String

showList :: [Status] -> ShowS

moduleOutput

Arguments

:: (Reflex t, MonadFix m, MonadHold t m)

=> Behavior t Bool

Whether to clear the output on reload

-> Ghci t

-> m (Dynamic t ByteString)

Collect all the GHCi module output (i.e., errors, warnings, etc) and optionally clear every time GHCi reloads

execOutput

Arguments

:: (Reflex t, MonadFix m, MonadHold t m)

=> Behavior t Bool

Whether to clear the output on reload

-> Ghci t

-> m (Dynamic t ByteString)

Collect all the GHCi expression output (i.e., the output of the called function) and optionally clear every time GHCi reloads

collectOutput

Arguments

:: (Reflex t, MonadFix m, MonadHold t m)

=> Event t ()

Clear output

-> Event t ByteString

Output to add

-> m (Dynamic t ByteString)

Collect output, appending new output to the end of the accumulator

statusMessage :: IsString a => Status -> a

Describe the current status of GHCi in a human-readable way