wip on deserialization

Author: kMutagene

src/DynamicObj/DynamicObj.fs

@@ -18,7 +18,7 @@ type DynamicObj() =
     #if !FABLE_COMPILER
     inherit DynamicObject()
     #endif
-    
+
     let mutable properties = new Dictionary<string, obj>()
 
     /// <summary>
@@ -272,13 +272,40 @@ type DynamicObj() =
     /// Important to return both so JSON serialization with Json.NET works.
     override this.GetDynamicMemberNames() = this.GetPropertyNames(true)
 
-    //// potential deserialization support
-    //[<JsonExtensionData>]
-    //member private this._additionalData : IDictionary<string, JToken> = new Dictionary<string, JToken>()
+    // potential deserialization support
+    [<JsonExtensionData(WriteData = false)>]
+    member private this.AdditionalProperties : IDictionary<string, JToken> = new Dictionary<string, JToken>()
+
+    [<OnDeserialized>]
+    member private this.OnDeserialized(context:StreamingContext) =
+        let rec processToken (token: JToken) : obj =
+            match token.Type with
+            | JTokenType.Object ->
+                let dict = DynamicObj()
+                let jobject = token :?> JObject
+                for property in jobject.Properties() do
+                    dict.SetProperty(property.Name, processToken(property.Value))
+                box dict
+            | JTokenType.Array ->
+                let array = token :?> JArray
+                let res =
+                    array 
+                    |> Seq.cast<JToken>
+                    |> Seq.toArray
+                    |> Array.map processToken 
+                box res
+            | JTokenType.Integer -> box (token.ToObject<int>())
+            | JTokenType.Float -> box (token.ToObject<float>())
+            | JTokenType.String -> box (token.ToObject<string>())
+            | JTokenType.Boolean -> box (token.ToObject<bool>())
+            | JTokenType.Date -> box (token.ToObject<System.DateTime>())
+            | JTokenType.Null -> null
+            | _ -> failwith "Unsupported JToken type"
 
-    //[<OnDeserialized>]
-    //member private this.OnDeserialized(context:StreamingContext) = ()
-    //    map over key value pairs in additional data, box the token values and set dynamic properties via SetProperty.
+        for kv in this.AdditionalProperties do
+            let propertyName = kv.Key
+            let propertValue = kv.Value
+            this.SetProperty(propertyName, processToken propertValue)
 
     #endif
 

src/DynamicObj/DynamicObj.fsproj

@@ -33,16 +33,12 @@
     <Compile Include="DynamicObj.fs" />
     <Compile Include="DynObj.fs" />
     <None Include="Playground.fsx" />
-    <None Include="..\..\README.md" Pack="true" PackagePath="\"/>
+    <None Include="..\..\README.md" Pack="true" PackagePath="\" />
   </ItemGroup>
 
   <ItemGroup>
     <PackageReference Include="Fable.Core" Version="4.3.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
   </ItemGroup>
-
-  <ItemGroup>
-    <Content Include="*.fsproj; **\*.fs; **\*.fsi" PackagePath="fable\" />
-  </ItemGroup>
 
 </Project>

tests/DynamicObject.Tests/Serialization.fs

@@ -25,6 +25,8 @@ let test_dynobj =
         )
     obj
 
+let test_dyn_obj_json = """{"dynamic_string":"yes","dynamic_number":69,"dynamic_boolean":true,"dynamic_array":["First","Second"],"dynamic_object":{"inner":"yup"}}"""
+
 type DerivedClass1(staticProp: string) =
     inherit DynamicObj()
     member this.StaticProp = staticProp
@@ -47,6 +49,8 @@ let test_derived_1 =
     let obj = DerivedClass1("lol")
     obj.SetProperty("dynamicProp", 42)
     obj
+    
+let test_derived_1_json = """{"StaticProp":"lol","dynamicProp":42}"""
 
 let test_derived_2 = 
     let obj = DerivedClass2(
@@ -68,19 +72,37 @@ let test_derived_2 =
         )
     obj
 
+let test_derived_2_json = """{"StaticString":"lol","StaticNumber":42.0,"StaticBoolean":true,"StaticArray":["First","Second"],"StaticObject":{"StaticProp":"lol","dynamicProp":42},"dynamic_string":"yes","dynamic_number":69,"dynamic_boolean":true,"dynamic_array":["First","Second"],"dynamic_object":{"inner":"yup"}}"""
+
 #if !FABLE_COMPILER
 let tests_newtonsoft = testList "Newtonsoft (.NET)" [
-    testCase "Serialize DynamicObj" <| fun _ ->
-        let actual = JsonConvert.SerializeObject(test_dynobj)
-        Expect.equal actual """{"dynamic_string":"yes","dynamic_number":69,"dynamic_boolean":true,"dynamic_array":["First","Second"],"dynamic_object":{"inner":"yup"}}""" ""
+    testList "Serialization" [
+        testCase "Serialize DynamicObj" <| fun _ ->
+            let actual = JsonConvert.SerializeObject(test_dynobj)
+            Expect.equal actual test_dyn_obj_json ""
+
+        testCase "Serialize simple derived class from DynamicObj" <| fun _ ->
+            let actual = JsonConvert.SerializeObject(test_derived_1)
+            Expect.equal actual test_derived_1_json ""
+
+        testCase "Serialize complex derived class from DynamicObj" <| fun _ ->
+            let actual = JsonConvert.SerializeObject(test_derived_2)
+            Expect.equal actual test_derived_2_json ""
+    ]
+    ftestList "Deserialization" [
+        testCase "Deserialize DynamicObj" <| fun _ ->
+            let actual = JsonConvert.DeserializeObject<DynamicObj>(test_dyn_obj_json)
+
+            printfn "expected props:"
+            for prop in test_dynobj.GetProperties(true) do
+                printfn $"{prop.Key}, {prop.Value}, {prop.Value.GetType()}"
 
-    testCase "Serialize simplederived class from DynamicObj" <| fun _ ->
-        let actual = JsonConvert.SerializeObject(test_derived_1)
-        Expect.equal actual """{"StaticProp":"lol","dynamicProp":42}""" ""
+            printfn "actual props:"
+            for prop in actual.GetProperties(true) do
+                printfn $"{prop.Key}, {prop.Value}, {prop.Value.GetType()}"
 
-    testCase "Serialize complex derived class from DynamicObj" <| fun _ ->
-        let actual = JsonConvert.SerializeObject(test_derived_2)
-        Expect.equal actual """{"StaticString":"lol","StaticNumber":42.0,"StaticBoolean":true,"StaticArray":["First","Second"],"StaticObject":{"StaticProp":"lol","dynamicProp":42},"dynamic_string":"yes","dynamic_number":69,"dynamic_boolean":true,"dynamic_array":["First","Second"],"dynamic_object":{"inner":"yup"}}""" ""
+            Expect.equal (actual.GetHashCode()) (test_dynobj.GetHashCode()) ""
+    ]
 ]
 #endif