AesonUtils.hs


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{-
 - Copyright (C) 2023 University of Luxembourg
 -
 - Licensed under the Apache License, Version 2.0 (the "License"); you may not
 - use this file except in compliance with the License. You may obtain a copy
 - of the License from the LICENSE file in this repository, or at:
 -
 - http://www.apache.org/licenses/LICENSE-2.0
 -
 - Unless required by applicable law or agreed to in writing, software
 - distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 - WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 - License for the specific language governing permissions and limitations
 - under the License.
 -}
module AesonUtils where

import qualified Data.Aeson as A
import qualified Data.Aeson.KeyMap as KM

-- | A bit like `lodashMerge` from aeson-extra, but replaces the arrays. Right
-- argument overwrites the left one.
objMerge :: A.Value -> A.Value -> A.Value
objMerge (A.Object a) (A.Object b) = A.Object $ KM.unionWith objMerge a b
objMerge _ b = b