2 people like it.

JsonValue JsonConverter

Not super efficient, and doesn't work on every case, but works most of the time. Json.NET JsonConverter for a JsonValue, i.e. JsonValueConverter. If you're using with a converter for discriminated unions, be sure to give this one higher precedence (since JsonValue is implemented as a DU).

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open Newtonsoft.Json.Linq

type JsonValueConverter () =
    inherit JsonConverter()

    override __.CanConvert(objectType) =
        typeof<JsonValue> = objectType.BaseType ||
        typeof<JsonValue> = objectType
    override __.WriteJson(writer, value, serializer) =
        let jsonValue = value :?> JsonValue
        let jToken =
            match jsonValue with
            | JsonValue.Null -> JValue.CreateNull () :> JToken
            | _ -> JToken.Parse (jsonValue.ToString())
        jToken.WriteTo writer
    override __.ReadJson(reader, objectType, existingValue, serializer) =
        let rec toJsonValue (jToken:JToken) =
            match jToken.Type with
            | JTokenType.Array ->
                let values = jToken.Values<JToken>()
                values
                |> Seq.map toJsonValue
                |> Seq.toArray
                |> JsonValue.Array
            | JTokenType.Object ->
                let value = jToken.ToString()
                (JsonValue.Parse value)
            | JTokenType.Float ->
                let value = jToken.Value<float>()
                (JsonValue.Float value)
            | JTokenType.Null -> (JsonValue.Null)
            | JTokenType.Boolean ->
                let value = jToken.Value<bool>()
                (JsonValue.Boolean value)
            | JTokenType.String ->
                let value = jToken.Value<string>()
                (JsonValue.String value)
            | JTokenType.Integer ->
                let value = jToken.Value<int64>()
                let d = decimal value
                (JsonValue.Number d)
            | _ ->
                failwithf
                    "Unable to deserialize into JsonValue.  Unrecognized jToken type.|tokenType=%A|value=%s"
                    jToken.Type
                    (jToken.ToString())

        let jToken = JToken.Load reader

        let jv = toJsonValue jToken

        jv :> obj
namespace Newtonsoft
namespace Newtonsoft.Json
namespace Newtonsoft.Json.Linq
Multiple items
type JsonValueConverter =
  inherit obj
  new : unit -> JsonValueConverter
  override CanConvert : objectType:'a -> 'b
  override ReadJson : reader:'a * objectType:'b * existingValue:'c * serializer:'d -> 'e
  override WriteJson : writer:'a * value:'b * serializer:'c -> 'd

Full name: Script.JsonValueConverter

--------------------
new : unit -> JsonValueConverter
override JsonValueConverter.CanConvert : objectType:'a -> 'b

Full name: Script.JsonValueConverter.CanConvert
val typeof<'T> : System.Type

Full name: Microsoft.FSharp.Core.Operators.typeof
override JsonValueConverter.WriteJson : writer:'a * value:'b * serializer:'c -> 'd

Full name: Script.JsonValueConverter.WriteJson
Multiple items
type JValue =
  inherit JToken
  new : other:JValue -> JValue + 14 overloads
  member CompareTo : obj:JValue -> int
  member Equals : other:JValue -> bool + 1 overload
  member GetHashCode : unit -> int
  member HasValues : bool
  member ToString : unit -> string + 3 overloads
  member Type : JTokenType
  member Value : obj with get, set
  member WriteTo : writer:JsonWriter * [<ParamArray>] converters:JsonConverter[] -> unit
  member WriteToAsync : writer:JsonWriter * cancellationToken:CancellationToken * [<ParamArray>] converters:JsonConverter[] -> Task
  ...

Full name: Newtonsoft.Json.Linq.JValue

--------------------
JValue(other: JValue) : unit
   (+0 other overloads)
JValue(value: int64) : unit
   (+0 other overloads)
JValue(value: decimal) : unit
   (+0 other overloads)
JValue(value: char) : unit
   (+0 other overloads)
JValue(value: uint64) : unit
   (+0 other overloads)
JValue(value: float) : unit
   (+0 other overloads)
JValue(value: float32) : unit
   (+0 other overloads)
JValue(value: System.DateTime) : unit
   (+0 other overloads)
JValue(value: System.DateTimeOffset) : unit
   (+0 other overloads)
JValue(value: bool) : unit
   (+0 other overloads)
JValue.CreateNull() : JValue
type JToken =
  member AddAfterSelf : content:obj -> unit
  member AddAnnotation : annotation:obj -> unit
  member AddBeforeSelf : content:obj -> unit
  member AfterSelf : unit -> IEnumerable<JToken>
  member Ancestors : unit -> IEnumerable<JToken>
  member AncestorsAndSelf : unit -> IEnumerable<JToken>
  member Annotation<'T> : unit -> 'T + 1 overload
  member Annotations<'T> : unit -> IEnumerable<'T> + 1 overload
  member BeforeSelf : unit -> IEnumerable<JToken>
  member Children : unit -> JEnumerable<JToken> + 1 overload
  ...

Full name: Newtonsoft.Json.Linq.JToken
JToken.Parse(json: string) : JToken
JToken.Parse(json: string, settings: JsonLoadSettings) : JToken
override JsonValueConverter.ReadJson : reader:'a * objectType:'b * existingValue:'c * serializer:'d -> 'e

Full name: Script.JsonValueConverter.ReadJson
type JTokenType =
  | None = 0
  | Object = 1
  | Array = 2
  | Constructor = 3
  | Property = 4
  | Comment = 5
  | Integer = 6
  | Float = 7
  | String = 8
  | Boolean = 9
  ...

Full name: Newtonsoft.Json.Linq.JTokenType
field JTokenType.Array = 2
module Seq

from Microsoft.FSharp.Collections
val map : mapping:('T -> 'U) -> source:seq<'T> -> seq<'U>

Full name: Microsoft.FSharp.Collections.Seq.map
val toArray : source:seq<'T> -> 'T []

Full name: Microsoft.FSharp.Collections.Seq.toArray
module Array

from Microsoft.FSharp.Collections
field JTokenType.Object = 1
field JTokenType.Float = 7
Multiple items
val float : value:'T -> float (requires member op_Explicit)

Full name: Microsoft.FSharp.Core.Operators.float

--------------------
type float = System.Double

Full name: Microsoft.FSharp.Core.float

--------------------
type float<'Measure> = float

Full name: Microsoft.FSharp.Core.float<_>
field JTokenType.Null = 10
field JTokenType.Boolean = 9
type bool = System.Boolean

Full name: Microsoft.FSharp.Core.bool
field JTokenType.String = 8
Multiple items
val string : value:'T -> string

Full name: Microsoft.FSharp.Core.Operators.string

--------------------
type string = System.String

Full name: Microsoft.FSharp.Core.string
module String

from Microsoft.FSharp.Core
field JTokenType.Integer = 6
Multiple items
val int64 : value:'T -> int64 (requires member op_Explicit)

Full name: Microsoft.FSharp.Core.Operators.int64

--------------------
type int64 = System.Int64

Full name: Microsoft.FSharp.Core.int64

--------------------
type int64<'Measure> = int64

Full name: Microsoft.FSharp.Core.int64<_>
Multiple items
val decimal : value:'T -> decimal (requires member op_Explicit)

Full name: Microsoft.FSharp.Core.Operators.decimal

--------------------
type decimal = System.Decimal

Full name: Microsoft.FSharp.Core.decimal

--------------------
type decimal<'Measure> = decimal

Full name: Microsoft.FSharp.Core.decimal<_>
val failwithf : format:Printf.StringFormat<'T,'Result> -> 'T

Full name: Microsoft.FSharp.Core.ExtraTopLevelOperators.failwithf
JToken.Load(reader: Newtonsoft.Json.JsonReader) : JToken
JToken.Load(reader: Newtonsoft.Json.JsonReader, settings: JsonLoadSettings) : JToken
type obj = System.Object

Full name: Microsoft.FSharp.Core.obj
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More information

Link:http://fssnip.net/7Vn
Posted:6 years ago
Author:Nat Elkins
Tags: json , json.net , jsonvalue , jsonconverter , jsonvalueconverter

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