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plugins-auto-0.0.4: Automatic recompilation and reloading of haskell modules.

The plugins-auto package

This library provides support for automatically recompiling and reloading modules into your programs when the source code is modified.

Any program called ghc in your PATH will be used for recompiling.

 module Main where
 import System.IO           (hSetBuffering,stdout,BufferMode(..))
 import System.Plugins.Auto (withMonadIO,initPlugins)
 import Answer

 main :: IO ()
 main = do ph<-initPlugins
         hSetBuffering stdout NoBuffering
         putStrLn "This program interacts with you in a loop."
         putStrLn "Type something, and the program will respond when you hit the Enter Key."
         putStrLn "Modify Answer.hs while interacting and you should see the answers"
         putStrLn "change accordingly."
         let interactiveLoop = prompt ph >> interactiveLoop
         interactiveLoop
 where
   prompt ph = do
      putStr "> "
      input <- getLine
      $(withMonadIO 'getAnswer) ph notLoaded$ \errs getAnswer ->
          mapM_ putStrLn errs  >> getAnswer input

   notLoaded errs =
      if null errs then putStrLn "Plugin not loaded yet."
        else putStrLn "Errors found:" >> mapM_ (putStrLn . ("  "++)) errs
               >> putStrLn "Try fixing the errors and come back here."

 module Answer where

 getAnswer :: String -> IO ()
 getAnswer input = putStrLn ("What you typed: "++input)

Properties

Modules

Downloads

• plugins-auto-0.0.4.tar.gz (Cabal source package)
• package description (included in the package)

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