wehub-resource-sync
83 lines
2.8 KiB
C#
83 lines
2.8 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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namespace QuantConnect.Util
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{
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/// <summary>
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/// Json Converter for ChartPoint which handles special reading
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/// </summary>
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public class ChartPointJsonConverter : JsonConverter
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{
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/// <summary>
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/// Determine if this Converter can convert this type
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/// </summary>
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/// <param name="objectType">Type that we would like to convert</param>
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/// <returns>True if <see cref="Series"/></returns>
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public override bool CanConvert(Type objectType)
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{
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return objectType == typeof(ChartPoint);
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}
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/// <summary>
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/// Reads series from Json
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/// </summary>
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public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
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{
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if (reader.TokenType == JsonToken.StartObject)
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{
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var jObject = JObject.Load(reader);
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var x = jObject["x"];
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if (!jObject.ContainsKey("y"))
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{
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return new ChartPoint(x.Value<long>(), 0);
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}
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var y = jObject["y"];
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if (y != null && (y.Type == JTokenType.Float || y.Type == JTokenType.Integer))
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{
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return new ChartPoint(x.Value<long>(), y.Value<decimal>());
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}
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if (y.Type == JTokenType.Null)
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{
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return new ChartPoint(x.Value<long>(), null);
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}
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return null;
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}
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var jArray = JArray.Load(reader);
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return new ChartPoint(jArray[0].Value<long>(), jArray[1].Value<decimal?>());
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}
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/// <summary>
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/// Write point to Json
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/// </summary>
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public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
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{
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var chartPoint = (ChartPoint)value;
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writer.WriteStartArray();
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writer.WriteValue(chartPoint.X);
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writer.WriteValue(chartPoint.Y);
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writer.WriteEndArray();
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}
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}
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}
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