    {-# LANGUAGE RecordWildCards #-}
    {-# LANGUAGE LambdaCase #-}
    module Hpack.Yaml (
    -- | /__NOTE:__/ This module is exposed to allow integration of Hpack into
    -- other tools.  It is not meant for general use by end users.  The following
    -- caveats apply:
    --
    -- * The API is undocumented, consult the source instead.
    --
    -- * The exposed types and functions primarily serve Hpack's own needs, not
    -- that of a public API.  Breaking changes can happen as Hpack evolves.
    --
    -- As an Hpack user you either want to use the @hpack@ executable or a build
    -- tool that supports Hpack (e.g. @stack@ or @cabal2nix@).

      decodeYaml
    , module Data.Aeson.Config.FromValue
    ) where

    import           Data.Bifunctor
    import           Data.Yaml hiding (decodeFile, decodeFileWithWarnings)
    import           Data.Yaml.Include
    import           Data.Yaml.Internal (Warning(..))
    import           Data.Aeson.Config.FromValue
    import           Data.Aeson.Config.Parser (fromAesonPath, formatPath)

    formatWarning :: FilePath -> Warning -> String
    formatWarning :: FilePath -> Warning -> FilePath
    formatWarning file :: FilePath
    file = \ case
      DuplicateKey path :: JSONPath
    path -> FilePath
    file FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ ": Duplicate field " FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ JSONPath -> FilePath
    formatPath (JSONPath -> JSONPath
    fromAesonPath JSONPath
    path)

    decodeYaml :: FilePath -> IO (Either String ([String], Value))
    decodeYaml :: FilePath -> IO (Either FilePath ([FilePath], Value))
    decodeYaml file :: FilePath
    file = do
      Either ParseException ([Warning], Value)
    result <- FilePath -> IO (Either ParseException ([Warning], Value))
    forall a.
    FromJSON a =>
    FilePath -> IO (Either ParseException ([Warning], a))
    decodeFileWithWarnings FilePath
    file
      Either FilePath ([FilePath], Value)
    -> IO (Either FilePath ([FilePath], Value))
    forall (m :: * -> *) a. Monad m => a -> m a
    return (Either FilePath ([FilePath], Value)
     -> IO (Either FilePath ([FilePath], Value)))
    -> Either FilePath ([FilePath], Value)
    -> IO (Either FilePath ([FilePath], Value))
    forall a b. (a -> b) -> a -> b
    $ (ParseException -> Either FilePath ([FilePath], Value))
    -> (([Warning], Value) -> Either FilePath ([FilePath], Value))
    -> Either ParseException ([Warning], Value)
    -> Either FilePath ([FilePath], Value)
    forall a c b. (a -> c) -> (b -> c) -> Either a b -> c
    either (FilePath -> Either FilePath ([FilePath], Value)
    forall a b. a -> Either a b
    Left (FilePath -> Either FilePath ([FilePath], Value))
    -> (ParseException -> FilePath)
    -> ParseException
    -> Either FilePath ([FilePath], Value)
    forall b c a. (b -> c) -> (a -> b) -> a -> c
    . ParseException -> FilePath
    errToString) (([FilePath], Value) -> Either FilePath ([FilePath], Value)
    forall a b. b -> Either a b
    Right (([FilePath], Value) -> Either FilePath ([FilePath], Value))
    -> (([Warning], Value) -> ([FilePath], Value))
    -> ([Warning], Value)
    -> Either FilePath ([FilePath], Value)
    forall b c a. (b -> c) -> (a -> b) -> a -> c
    . ([Warning] -> [FilePath])
    -> ([Warning], Value) -> ([FilePath], Value)
    forall (p :: * -> * -> *) a b c.
    Bifunctor p =>
    (a -> b) -> p a c -> p b c
    first ((Warning -> FilePath) -> [Warning] -> [FilePath]
    forall a b. (a -> b) -> [a] -> [b]
    map ((Warning -> FilePath) -> [Warning] -> [FilePath])
    -> (Warning -> FilePath) -> [Warning] -> [FilePath]
    forall a b. (a -> b) -> a -> b
    $ FilePath -> Warning -> FilePath
    formatWarning FilePath
    file)) Either ParseException ([Warning], Value)
    result
      where
        errToString :: ParseException -> FilePath
    errToString err :: ParseException
    err = FilePath
    file FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ case ParseException
    err of
          AesonException e :: FilePath
    e -> ": " FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ FilePath
    e
          InvalidYaml (Just (YamlException s :: FilePath
    s)) -> ": " FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ FilePath
    s
          InvalidYaml (Just (YamlParseException{..})) -> ":" FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ Int -> FilePath
    forall a. Show a => a -> FilePath
    show Int
    yamlLine FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ ":" FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ Int -> FilePath
    forall a. Show a => a -> FilePath
    show Int
    yamlColumn FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ ": " FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ FilePath
    yamlProblem FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ " " FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ FilePath
    yamlContext
            where YamlMark{..} = YamlMark
    yamlProblemMark
          _ -> ": " FilePath -> FilePath -> FilePath
    forall a. [a] -> [a] -> [a]
    ++ ParseException -> FilePath
    forall a. Show a => a -> FilePath
    show ParseException
    err