1 files changed, 38 insertions, 2 deletions

diff --git a/src/Data/JLD.hs b/src/Data/JLD.hs
index d7688d0..a7042dc 100644
--- a/src/Data/JLD.hs
+++ b/src/Data/JLD.hs
@@ -4,6 +4,7 @@ module Data.JLD (
     module Data.JLD.Options,
     JLDExpansionParams (..),
     JLDExpansionState (..),
+    JLDFlatteningParams (..),
     expand,
     flatten,
 ) where
@@ -100,9 +101,44 @@ expand document baseUrl paramsFn = do
 
     pure (result', state')
 
-flatten :: Monad m => Value -> URI -> (JLDExpansionParams () m -> JLDExpansionParams e m) -> m (Either (JLDError e) Value, JLDExpansionState)
+data JLDFlatteningParams e m = JLDFlatteningParams
+    { jldFlatteningParamsDocumentLoader :: DocumentLoader e m
+    , jldFlatteningParamsProcessingMode :: JLDVersion
+    , jldFlatteningParamsMaxRemoteContexts :: Int
+    , jldFlatteningParamsExpandContext :: Maybe Value
+    , jldFlatteningParamsFrameExpansion :: Bool
+    , jldFlatteningParamsState :: JLDExpansionState
+    , jldFlatteningParamsCompactArrays :: Bool
+    }
+    deriving (Show)
+
+flatten :: Monad m => Value -> URI -> (JLDFlatteningParams () m -> JLDFlatteningParams e m) -> m (Either (JLDError e) Value, JLDExpansionState)
 flatten document baseUrl paramsFn = do
-    (result, state') <- expand document baseUrl paramsFn
+    let JLDFlatteningParams{..} =
+            paramsFn
+                JLDFlatteningParams
+                    { jldFlatteningParamsDocumentLoader = DocumentLoader <. const <. pure <| Left ()
+                    , jldFlatteningParamsProcessingMode = JLD1_1
+                    , jldFlatteningParamsMaxRemoteContexts = 20
+                    , jldFlatteningParamsExpandContext = Nothing
+                    , jldFlatteningParamsFrameExpansion = False
+                    , jldFlatteningParamsState =
+                        JLDExpansionState
+                            { jldExpansionStateContextCache = mempty
+                            , jldExpansionStateDocumentCache = mempty
+                            }
+                    , jldFlatteningParamsCompactArrays = True
+                    }
+        expansionParams =
+            JLDExpansionParams
+                { jldExpansionParamsDocumentLoader = jldFlatteningParamsDocumentLoader
+                , jldExpansionParamsProcessingMode = jldFlatteningParamsProcessingMode
+                , jldExpansionParamsMaxRemoteContexts = jldFlatteningParamsMaxRemoteContexts
+                , jldExpansionParamsExpandContext = jldFlatteningParamsExpandContext
+                , jldExpansionParamsFrameExpansion = jldFlatteningParamsFrameExpansion
+                , jldExpansionParamsState = jldFlatteningParamsState
+                }
+    (result, state') <- expand document baseUrl (const expansionParams)
     case result of
         Left err -> pure (Left err, state')
         Right expanded -> fmap (,state') <. runExceptT <| F.flatten expanded