@@ -10,14 +10,14 @@ module Derive.API.TH
1010 , derivingOptionsToJsonOptions
1111 , deriveApiInstances
1212 , deriveApiAndArbitraryInstances
13−#ifndef ghcjs_HOST_OS
13+#ifdef BACKEND
1414 , derivingOptionsToSchemaOptions
1515 , deriveToParamSchema
1616 , deriveToSchema
17+ , deriveArbitrary
1718#endif
1819 , deriveApiFromJSON
1920 , deriveApiToJSON
20− , deriveArbitrary
2121 , generateParseJSON
2222 ) where
2323
@@ -25,21 +25,22 @@ import Control.Monad
2525import Data.Aeson.TH as A
2626import Data.Aeson.Types
2727import Data.List
28+import Data.Map as M
2829import Data.Maybe
2930import Data.Typeable
3031import Language.Haskell.TH
3132import Language.Haskell.TH.Datatype
3233import Language.Haskell.TH.Syntax
33−import Test.QuickCheck
34−import Test.QuickCheck.Arbitrary.Generic
3534
36−#ifndef ghcjs_HOST_OS
35+#ifdef BACKEND
3736import Data.OpenApi hiding (prefix)
37+import Test.QuickCheck
38+import Test.QuickCheck.Arbitrary.Generic
3839#endif
3940
4041-- | derive JSON and openapi3 (ToSchema) instances
4142deriveApiInstances :: DerivingOptions -> Name -> Q [Dec]
42−#ifndef ghcjs_HOST_OS
43+#ifdef BACKEND
4344deriveApiInstances opts tname = liftM2 (<>)
4445 (deriveJSON (derivingOptionsToJsonOptions opts) tname)
4546 (deriveToSchema opts tname)
@@ -50,7 +51,7 @@ deriveApiInstances opts tname =
5051
5152-- | derive JSON and openapi3 (ToSchema) and Arbitrary instances
5253deriveApiAndArbitraryInstances :: DerivingOptions -> Name -> Q [Dec]
53−#ifndef ghcjs_HOST_OS
54+#ifdef BACKEND
5455deriveApiAndArbitraryInstances opts tname = liftM2 (<>)
5556 (deriveApiInstances opts tname)
5657 (deriveArbitrary tname)
@@ -59,14 +60,29 @@ deriveApiAndArbitraryInstances opts tname =
5960 deriveApiInstances opts tname
6061#endif
6162
63+#if MIN_VERSION_containers(0,6,6)
64+#elif MIN_VERSION_template_haskell(2,17,0)
65+instance (Lift k, Lift a) => Lift (Map k a) where
66+ liftTyped x = unsafeCodeCoerce (lift x)
67+ lift m = [|M.fromList (M.toList m)|]
68+#elif MIN_VERSION_template_haskell(2,16,0)
69+instance (Lift k, Lift a) => Lift (Map k a) where
70+ liftTyped x = unsafeTExpCoerce (lift x)
71+ lift m = [|M.fromList (M.toList m)|]
72+#else
73+instance (Lift k, Lift a) => Lift (Map k a) where
74+ lift m = [|M.fromList (M.toList m)|]
75+#endif
6276-- We can't directly 'lift' Options into TH (there is no instance for function),
6377-- so we use this type.
6478data DerivingOptions = DerivingOptions
6579 { prefix :: Maybe String
66− -- ^ Optional prefix to strip from constructors and field labels
80+ -- ^ Optional prefix to strip from constructors and field labels
6781 , snake :: Bool
6882 -- ^ Whether to snake constructors and field labels
6983 -- Applied after stripping prefix
84+ , convertMap :: M.Map String String
85+ -- ^ convert names (constructors and fields) before snake and strip prefix
7086 , unwrapUnaryRecords :: Bool
7187 , omitNothingFields :: Bool
7288 , sumEncoding :: SumEncoding
@@ -78,27 +94,29 @@ defaultDerivingOptions :: DerivingOptions
7894defaultDerivingOptions = DerivingOptions
7995 { prefix = Nothing
8096 , snake = True
97+ , convertMap = mempty
8198 , unwrapUnaryRecords = False
8299 , omitNothingFields = False
83100 , sumEncoding = defaultTaggedObject }
84101
85102derivingOptionsToJsonOptions :: DerivingOptions -> Options
86103derivingOptionsToJsonOptions DerivingOptions{..} = defaultOptions
87− { fieldLabelModifier = snaked . stripped
88− , constructorTagModifier = snaked . stripped
104+ { fieldLabelModifier = snaked . stripped . convert
105+ , constructorTagModifier = snaked . stripped . convert
89106 , sumEncoding
90107 , omitNothingFields
91108 , unwrapUnaryRecords }
92109 where
110+ convert s = fromMaybe s $ M.lookup s convertMap
93111 snaked = if snake then camelTo2 '_' else id
94112 stripped = maybe id stripPrefix' prefix
95113
96−#ifndef ghcjs_HOST_OS
114+#ifdef BACKEND
97115datatypeVarsTypes :: DatatypeInfo -> [Type]
98116#if MIN_VERSION_th_abstraction(0,3,0)
99−datatypeVarsTypes = fmap (VarT . tvName) . datatypeVars
117+datatypeVarsTypes = fmap (VarT . tvName) . datatypeVars
100118#else
101−datatypeVarsTypes = datatypeVars
119+datatypeVarsTypes = datatypeVars
102120#endif
103121
104122derivingOptionsToSchemaOptions :: DerivingOptions -> SchemaOptions
@@ -106,7 +124,7 @@ derivingOptionsToSchemaOptions = fromAesonOptions . derivingOptionsToJsonOptions
106124
107125deriveToParamSchema :: DerivingOptions -> Name -> Q [Dec]
108126deriveToParamSchema opts tname = do
109− body <- AppE (VarE 'genericToParamSchema)
127+ body <- AppE (VarE 'genericToParamSchema)
110128 . AppE (VarE 'derivingOptionsToSchemaOptions) <$> lift opts
111129 pure [InstanceD Nothing []
112130 (ConT ''ToParamSchema `AppT` ConT tname)
@@ -126,11 +144,11 @@ deriveToSchema opts tname = do
126144 [ FunD 'declareNamedSchema [Clause [] (NormalB body) []] ]]
127145
128146deriveArbitrary :: Name -> Q [Dec]
129−deriveArbitrary t = do
147+deriveArbitrary t = do
130148 tinfo <- reifyDatatype t
131− let
149+ let
132150 typ = datatypeType tinfo
133− ctx = datatypeVarsTypes tinfo >>= \tv ->
151+ ctx = datatypeVarsTypes tinfo >>= \tv ->
134152 [ ConT ''Arbitrary `AppT` tv
135153 , ConT ''Arg `AppT` typ `AppT` tv ]
136154 pure [InstanceD Nothing ctx (ConT ''Arbitrary `AppT` typ)
@@ -149,4 +167,3 @@ generateParseJSON = mkParseJSON . derivingOptionsToJsonOptions
149167
150168stripPrefix' :: String -> String -> String
151169stripPrefix' pfx = fromMaybe <*> stripPrefix pfx
152−