109 lines
3.5 KiB
Haskell
109 lines
3.5 KiB
Haskell
{-# LANGUAGE LambdaCase #-}
|
|
{-# LANGUAGE MultiWayIf #-}
|
|
-- {-# LANGUAGE QuasiQuotes #-}
|
|
|
|
module Main where
|
|
|
|
-- import Control.DeepSeq
|
|
-- import qualified Control.Exception as Exc
|
|
import Control.Monad
|
|
import Control.Monad.ST
|
|
import qualified Nix
|
|
import Nix.Expr.Types.Annotated (stripAnnotation)
|
|
import Nix.Lint
|
|
import Nix.Parser
|
|
import Nix.Pretty
|
|
-- import Nix.TH
|
|
import Options.Applicative hiding (ParserResult(..))
|
|
import System.IO
|
|
import Text.PrettyPrint.ANSI.Leijen hiding ((<$>))
|
|
|
|
data Options = Options
|
|
{ verbose :: Bool
|
|
, debug :: Bool
|
|
, evaluate :: Bool
|
|
, check :: Bool
|
|
, expression :: Maybe String
|
|
, fromFile :: Maybe FilePath
|
|
, filePaths :: [FilePath]
|
|
}
|
|
|
|
mainOptions :: Parser Options
|
|
mainOptions = Options
|
|
<$> switch
|
|
( short 'v'
|
|
<> long "verbose"
|
|
<> help "Verbose output")
|
|
<*> switch
|
|
( short 'd'
|
|
<> long "debug"
|
|
<> help "Debug output")
|
|
<*> switch
|
|
( long "eval"
|
|
<> help "Whether to evaluate, or just pretty-print")
|
|
<*> switch
|
|
( long "check"
|
|
<> help "Whether to check for syntax errors after parsing")
|
|
<*> optional (strOption
|
|
( short 'e'
|
|
<> long "expr"
|
|
<> help "Expression to parse or evaluate"))
|
|
<*> optional (strOption
|
|
( short 'f'
|
|
<> long "file"
|
|
<> help "Parse all of the files given in FILE; - means stdin"))
|
|
<*> many (strArgument (metavar "FILE" <> help "Path of file to parse"))
|
|
|
|
main :: IO ()
|
|
main = do
|
|
opts <- execParser optsDef
|
|
case expression opts of
|
|
Just s -> handleResult opts Nothing (parseNixStringLoc s)
|
|
Nothing -> case fromFile opts of
|
|
Just "-" ->
|
|
mapM_ (processFile opts) =<< (lines <$> getContents)
|
|
Just path ->
|
|
mapM_ (processFile opts) =<< (lines <$> readFile path)
|
|
Nothing -> case filePaths opts of
|
|
[] ->
|
|
handleResult opts Nothing . parseNixStringLoc
|
|
=<< getContents
|
|
["-"] ->
|
|
handleResult opts Nothing . parseNixStringLoc
|
|
=<< getContents
|
|
paths ->
|
|
mapM_ (processFile opts) paths
|
|
where
|
|
optsDef :: ParserInfo Options
|
|
optsDef = info (helper <*> mainOptions)
|
|
(fullDesc <> progDesc "" <> header "hnix")
|
|
|
|
processFile opts path = do
|
|
-- putStrLn "Parsing file..."
|
|
eres <- parseNixFileLoc path
|
|
handleResult opts (Just path) eres
|
|
|
|
-- print . printNix =<< Nix.eval [nix|1 + 3|]
|
|
|
|
handleResult opts mpath = \case
|
|
Failure err -> hPutStrLn stderr $ "Parse failed: " ++ show err
|
|
Success expr -> do
|
|
-- expr <- Exc.evaluate $ force expr
|
|
-- putStrLn "Parsing file...done"
|
|
|
|
when (check opts) $
|
|
putStrLn $ runST $ Nix.runLintM . renderSymbolic
|
|
=<< Nix.lint (stripAnnotation expr)
|
|
|
|
if | evaluate opts, debug opts ->
|
|
print =<< Nix.tracingEvalLoc mpath expr
|
|
| evaluate opts ->
|
|
putStrLn . printNix =<< Nix.evalLoc mpath expr
|
|
| debug opts ->
|
|
print expr
|
|
| otherwise ->
|
|
displayIO stdout
|
|
. renderPretty 0.4 80
|
|
. prettyNix
|
|
. stripAnnotation $ expr
|