graphql-engine/server/src-lib/Hasura/GraphQL/Parser/Class/Parse.hs
2022-06-28 10:08:09 +00:00

23 lines
650 B
Haskell

-- | Classes for monads used during schema construction and query parsing.
module Hasura.GraphQL.Parser.Class.Parse
( MonadParse (..),
parseError,
)
where
import Data.Parser.JSONPath
import Hasura.Base.Error
import Hasura.Prelude
-- | A class that provides functionality for parsing GraphQL queries, i.e.
-- running a fully-constructed 'Parser'.
class Monad m => MonadParse m where
withKey :: JSONPathElement -> m a -> m a
-- | Not the full power of 'MonadError' because parse errors cannot be
-- caught.
parseErrorWith :: Code -> Text -> m a
parseError :: MonadParse m => Text -> m a
parseError = parseErrorWith ValidationFailed