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Speed up default FromJSON/ToJSON instances #335

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merged 1 commit into from
Jan 19, 2016
Merged

Speed up default FromJSON/ToJSON instances #335

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1 change: 1 addition & 0 deletions Data/Aeson.hs
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Expand Up @@ -60,6 +60,7 @@ module Data.Aeson
-- ** Generic JSON classes and options
, GFromJSON(..)
, GToJSON(..)
, GToEncoding(..)
, genericToJSON
, genericToEncoding
, genericParseJSON
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1 change: 1 addition & 0 deletions Data/Aeson/Types.hs
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Expand Up @@ -39,6 +39,7 @@ module Data.Aeson.Types
-- ** Generic JSON classes
, GFromJSON(..)
, GToJSON(..)
, GToEncoding(..)
, genericToJSON
, genericToEncoding
, genericParseJSON
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6 changes: 5 additions & 1 deletion Data/Aeson/Types/Class.hs
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Expand Up @@ -19,6 +19,7 @@ module Data.Aeson.Types.Class
-- * Generic JSON classes
, GFromJSON(..)
, GToJSON(..)
, GToEncoding(..)
, genericToJSON
, genericToEncoding
, genericParseJSON
Expand All @@ -40,6 +41,9 @@ class GToJSON f where
-- default generic implementation of 'toJSON'.
gToJSON :: Options -> f a -> Value

-- | Class of generic representation types ('Rep') that can be converted to
-- a JSON 'Encoding'.
class GToEncoding f where
-- | This method (applied to 'defaultOptions') can be used as the
-- default generic implementation of 'toEncoding'.
gToEncoding :: Options -> f a -> Encoding
Expand All @@ -59,7 +63,7 @@ genericToJSON opts = gToJSON opts . from
-- | A configurable generic JSON encoder. This function applied to
-- 'defaultOptions' is used as the default for 'toEncoding' when the type
-- is an instance of 'Generic'.
genericToEncoding :: (Generic a, GToJSON (Rep a)) => Options -> a -> Encoding
genericToEncoding :: (Generic a, GToEncoding (Rep a)) => Options -> a -> Encoding
genericToEncoding opts = gToEncoding opts . from

-- | A configurable generic JSON decoder. This function applied to
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