chore: import upstream snapshot with attribution

2026-07-13 13:02:50 +08:00
commit 0fc60fdcb1
5008 changed files with 910633 additions and 0 deletions
@@ -0,0 +1,74 @@
+/*
+ * QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
+ * Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+using System;
+using System.Linq;
+using Newtonsoft.Json;
+using System.Collections.Generic;
+
+namespace QuantConnect
+{
+    /// <summary>
+    /// Convert a Chart Series to and from JSON
+    /// </summary>
+    public class ChartSeriesJsonConverter : JsonConverter
+    {
+        /// <summary>
+        /// This converter wont be used to read JSON. Will throw exception if manually called.
+        /// </summary>
+        public override bool CanRead => false;
+
+        /// <summary>
+        /// Indicates whether the given object type can be converted into Chart Series
+        /// </summary>
+        public override bool CanConvert(Type objectType)
+        {
+            return typeof(Dictionary<string, BaseSeries>).IsAssignableFrom(objectType);
+        }
+
+        /// <summary>
+        /// Converts a Chart Series object into a JSON file
+        /// </summary>
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            var series = value as Dictionary<string, BaseSeries>;
+            if (series == null)
+            {
+                return;
+            }
+
+            writer.WriteStartObject();
+            // we sort the series in ascending count so that they are chart nicely, has value for stacked area series so they're continuous 
+            foreach (var kvp in series.OrderBy(x => x.Value.Index)
+                .ThenBy(x => x.Value.Values.Count)
+                .ThenBy(x => x.Value.Values.Select(x => (x as ChartPoint)?.Y ?? 0).Sum()))
+            {
+                writer.WritePropertyName(kvp.Key);
+                writer.WriteRawValue(JsonConvert.SerializeObject(kvp.Value));
+            }
+
+            writer.WriteEndObject();
+        }
+
+        /// <summary>
+        /// Converts a JSON file into a Chart Series object
+        /// </summary>
+        /// <remarks>Throws NotImplementedException</remarks>
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}