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
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+/*
+ * 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.
+*/
+
+namespace QuantConnect.Securities
+{
+    /// <summary>
+    /// Represents common properties for contract-based securities such as options and CFDs
+    /// </summary>
+    public class ContractSymbolProperties : SymbolProperties
+    {
+        /// <summary>
+        /// The contract multiplier for the security.
+        /// </summary>
+        /// <remarks>
+        /// If manually set by a consumer, this value will be used instead of the
+        /// <see cref="SymbolProperties.ContractMultiplier"/> and also allows to make
+        /// sure it is not overridden when the symbol properties database gets updated.
+        /// </remarks>
+        private decimal? _contractMultiplier;
+
+        /// <summary>
+        /// The contract multiplier for the security
+        /// </summary>
+        public override decimal ContractMultiplier => _contractMultiplier ?? base.ContractMultiplier;
+
+        /// <summary>
+        /// Creates an instance of the <see cref="ContractSymbolProperties"/> class from a <see cref="SymbolProperties"/> instance
+        /// </summary>
+        public ContractSymbolProperties(SymbolProperties properties)
+            : base(properties)
+        {
+        }
+
+        /// <summary>
+        /// Creates an instance of the <see cref="ContractSymbolProperties"/> class
+        /// </summary>
+        public ContractSymbolProperties(string description, string quoteCurrency, decimal contractMultiplier,
+            decimal minimumPriceVariation, decimal lotSize, string marketTicker,
+            decimal? minimumOrderSize = null, decimal priceMagnifier = 1, decimal strikeMultiplier = 1)
+            : base(description, quoteCurrency, contractMultiplier, minimumPriceVariation, lotSize, marketTicker,
+                minimumOrderSize, priceMagnifier, strikeMultiplier)
+        {
+        }
+
+        /// <summary>
+        /// Sets a custom contract multiplier that persists through symbol properties database updates
+        /// </summary>
+        internal void SetContractMultiplier(decimal multiplier)
+        {
+            _contractMultiplier = multiplier;
+        }
+    }
+}