| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
System.Nix.Internal.Nar.Parser
Description
A streaming parser for the NAR format
Synopsis
- runParser :: forall m a. (MonadIO m, MonadBaseControl IO m) => NarEffects m -> NarParser m a -> Handle -> FilePath -> m (Either String a)
- parseNar :: (MonadIO m, MonadFail m) => NarParser m ()
- testParser :: m ~ IO => NarParser m a -> ByteString -> m (Either String a)
- testParser' :: m ~ IO => FilePath -> IO (Either String ())
Documentation
Arguments
| :: forall m a. (MonadIO m, MonadBaseControl IO m) | |
| => NarEffects m | Provide the effects set, usually |
| -> NarParser m a | A parser to run, such as |
| -> Handle | A handle the stream containg the NAR. It should already be
open and in |
| -> FilePath | The root file system object to be created by the NAR |
| -> m (Either String a) |
Run a NarParser over a byte stream
This is suitable for testing the top-level NAR parser, or any of the
smaller utilities parsers, if you have bytes appropriate for them
parseNar :: (MonadIO m, MonadFail m) => NarParser m () Source #
Parse a NAR byte string, producing ().
Parsing a NAR is mostly used for its side-effect: producing
the file system objects packed in the NAR. That's why we pure ()
testParser :: m ~ IO => NarParser m a -> ByteString -> m (Either String a) Source #