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mirror of https://github.com/anoma/juvix.git synced 2024-12-04 06:23:13 +03:00
juvix/app/Main.hs
Paul Cadman 8eb4c64f5d
Improve error message when input path doesn't exist (#2092)
Previously if you call Juvix on a file that doesn't exist you get the
error:

```
$ juvix compile /i/don't/exist.juvix
juvix: /i/dont: changeWorkingDirectory: does not exist (No such file or directory)
```

After this change you will see:

```
$ juvix compile /i/don't/exist.juvix
The input path "/i/dont/exist.juvix" does not exist
```
2023-05-15 11:03:09 +02:00

35 lines
1.0 KiB
Haskell

{-# LANGUAGE QuasiQuotes #-}
module Main (main) where
import App
import CommonOptions
import Data.String.Interpolate (i)
import GlobalOptions
import Juvix.Compiler.Pipeline.Root
import TopCommand
import TopCommand.Options
main :: IO ()
main = do
let parserPreferences = prefs showHelpOnEmpty
invokeDir <- getCurrentDir
(_runAppIOArgsGlobalOptions, cli) <- customExecParser parserPreferences descr
mbuildDir <- mapM (prepathToAbsDir invokeDir) (_runAppIOArgsGlobalOptions ^? globalBuildDir . _Just . pathPath)
mainFile <- topCommandInputPath cli
mapM_ checkMainFile mainFile
_runAppIOArgsRoots <- findRootAndChangeDir (containingDir <$> mainFile) mbuildDir invokeDir
runFinal
. resourceToIOFinal
. embedToFinal @IO
. runAppIO RunAppIOArgs {..}
$ runTopCommand cli
where
checkMainFile :: SomePath b -> IO ()
checkMainFile p = unlessM (doesSomePathExist p) err
where
err :: IO ()
err = do
hPutStrLn stderr [i|The input path #{p} does not exist|]
exitFailure