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Distribute ToJSONFields through Maybe.

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Rob Rix 2017-04-27 17:56:24 -04:00
parent 5beff62cbc
commit 5afd5b8fa6
1 changed files with 3 additions and 0 deletions
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src/Renderer/JSON.hs
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@ -96,6 +96,9 @@ instance ToJSONFields Range where
instance ToJSONFields Category where
toJSONFields c = ["category" .= case c of { Other s -> s ; _ -> toS c }]
instance ToJSONFields a => ToJSONFields (Maybe a) where
toJSONFields = maybe [] toJSONFields
lineFields :: (ToJSON leaf, ToJSON (Record fields), HasField fields Category, HasField fields Range, KeyValue kv) =>
Int ->