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|
-----------------------------------------------------------------------------
--
-- Module : Main
-- Copyright : (c) Phil Freeman 2013
-- License : MIT
--
-- Maintainer : Phil Freeman <paf31@cantab.net>
-- Stability : experimental
-- Portability :
--
-- |
--
-----------------------------------------------------------------------------
{-# LANGUAGE DataKinds, GeneralizedNewtypeDeriving, TupleSections, RecordWildCards #-}
module Main where
import Control.Applicative
import Control.Monad.Except
import Control.Monad.Reader
import Data.Version (showVersion)
import Data.Traversable (traverse)
import Options.Applicative as Opts
import System.Directory
(doesFileExist, getModificationTime, createDirectoryIfMissing)
import System.FilePath (takeDirectory)
import System.Exit (exitSuccess, exitFailure)
import System.IO.Error (tryIOError)
import qualified Language.PureScript as P
import qualified Paths_purescript as Paths
data PSCMakeOptions = PSCMakeOptions
{ pscmInput :: [FilePath]
, pscmOutputDir :: FilePath
, pscmOpts :: P.Options P.Make
, pscmUsePrefix :: Bool
}
data InputOptions = InputOptions
{ ioNoPrelude :: Bool
, ioInputFiles :: [FilePath]
}
readInput :: InputOptions -> IO [(Either P.RebuildPolicy FilePath, String)]
readInput InputOptions{..} = do
content <- forM ioInputFiles $ \inFile -> (Right inFile, ) <$> readFile inFile
return (if ioNoPrelude then content else (Left P.RebuildNever, P.prelude) : content)
newtype Make a = Make { unMake :: ReaderT (P.Options P.Make) (ExceptT P.MultipleErrors IO) a }
deriving (Functor, Applicative, Monad, MonadIO, MonadError P.MultipleErrors, MonadReader (P.Options P.Make))
runMake :: P.Options P.Make -> Make a -> IO (Either P.MultipleErrors a)
runMake opts = runExceptT . flip runReaderT opts . unMake
makeIO :: (IOError -> P.ErrorMessage) -> IO a -> Make a
makeIO f io = do
e <- liftIO $ tryIOError io
either (throwError . P.errorMessage . f) return e
instance P.MonadMake Make where
getTimestamp path = makeIO (const (P.CannotGetFileInfo path)) $ do
exists <- doesFileExist path
traverse (const $ getModificationTime path) $ guard exists
readTextFile path = makeIO (const (P.CannotReadFile path))$ do
putStrLn $ "Reading " ++ path
readFile path
writeTextFile path text = makeIO (const (P.CannotWriteFile path)) $ do
mkdirp path
putStrLn $ "Writing " ++ path
writeFile path text
progress = liftIO . putStrLn
compile :: PSCMakeOptions -> IO ()
compile (PSCMakeOptions input outputDir opts usePrefix) = do
modules <- P.parseModulesFromFiles (either (const "") id) <$> readInput (InputOptions (P.optionsNoPrelude opts) input)
case modules of
Left err -> do
print err
exitFailure
Right ms -> do
e <- runMake opts $ P.make outputDir ms prefix
case e of
Left errs -> do
putStrLn (P.prettyPrintMultipleErrors (P.optionsVerboseErrors opts) errs)
exitFailure
Right _ -> do
exitSuccess
where
prefix = if usePrefix
then ["Generated by psc-make version " ++ showVersion Paths.version]
else []
mkdirp :: FilePath -> IO ()
mkdirp = createDirectoryIfMissing True . takeDirectory
inputFile :: Parser FilePath
inputFile = strArgument $
metavar "FILE"
<> help "The input .purs file(s)"
outputDirectory :: Parser FilePath
outputDirectory = strOption $
short 'o'
<> long "output"
<> Opts.value "output"
<> showDefault
<> help "The output directory"
noTco :: Parser Bool
noTco = switch $
long "no-tco"
<> help "Disable tail call optimizations"
noPrelude :: Parser Bool
noPrelude = switch $
long "no-prelude"
<> help "Omit the Prelude"
noMagicDo :: Parser Bool
noMagicDo = switch $
long "no-magic-do"
<> help "Disable the optimization that overloads the do keyword to generate efficient code specifically for the Eff monad."
noOpts :: Parser Bool
noOpts = switch $
long "no-opts"
<> help "Skip the optimization phase."
comments :: Parser Bool
comments = switch $
short 'c'
<> long "comments"
<> help "Include comments in the generated code."
verboseErrors :: Parser Bool
verboseErrors = switch $
short 'v'
<> long "verbose-errors"
<> help "Display verbose error messages"
noPrefix :: Parser Bool
noPrefix = switch $
short 'p'
<> long "no-prefix"
<> help "Do not include comment header"
options :: Parser (P.Options P.Make)
options = P.Options <$> noPrelude
<*> noTco
<*> noMagicDo
<*> pure Nothing
<*> noOpts
<*> verboseErrors
<*> (not <$> comments)
<*> pure P.MakeOptions
pscMakeOptions :: Parser PSCMakeOptions
pscMakeOptions = PSCMakeOptions <$> many inputFile
<*> outputDirectory
<*> options
<*> (not <$> noPrefix)
main :: IO ()
main = execParser opts >>= compile
where
opts = info (version <*> helper <*> pscMakeOptions) infoModList
infoModList = fullDesc <> headerInfo <> footerInfo
headerInfo = header "psc-make - Compiles PureScript to Javascript"
footerInfo = footer $ "psc-make " ++ showVersion Paths.version
version :: Parser (a -> a)
version = abortOption (InfoMsg (showVersion Paths.version)) $ long "version" <> help "Show the version number" <> hidden
|
