chore: import upstream snapshot with attribution

2026-07-13 13:02:50 +08:00
commit 0fc60fdcb1
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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.
+*/
+
+using QuantConnect.Orders;
+using System.Collections.Generic;
+
+namespace QuantConnect.Securities.Positions
+{
+    /// <summary>
+    /// Provides methods aimed at reducing the noise introduced from having result/parameter types for each method.
+    /// These methods aim to accept raw arguments and return the desired value type directly.
+    /// </summary>
+    public static class PositionGroupBuyingPowerModelExtensions
+    {
+        /// <summary>
+        /// Gets the margin currently allocated to the specified position group
+        /// </summary>
+        public static decimal GetMaintenanceMargin(
+            this IPositionGroupBuyingPowerModel model,
+            SecurityPortfolioManager portfolio,
+            IPositionGroup positionGroup
+            )
+        {
+            return model.GetMaintenanceMargin(
+                new PositionGroupMaintenanceMarginParameters(portfolio, positionGroup)
+            );
+        }
+
+        /// <summary>
+        /// The margin that must be held in order to change positions by the changes defined by the provided position group
+        /// </summary>
+        public static decimal GetInitialMarginRequirement(
+            this IPositionGroupBuyingPowerModel model,
+            SecurityPortfolioManager portfolio,
+            IPositionGroup positionGroup
+            )
+        {
+            return model.GetInitialMarginRequirement(
+                new PositionGroupInitialMarginParameters(portfolio, positionGroup)
+            ).Value;
+        }
+
+        /// <summary>
+        /// Gets the total margin required to execute the specified order in units of the account currency including fees
+        /// </summary>
+        public static decimal GetInitialMarginRequiredForOrder(
+            this IPositionGroupBuyingPowerModel model,
+            SecurityPortfolioManager portfolio,
+            IPositionGroup positionGroup,
+            Order order
+            )
+        {
+            return model.GetInitialMarginRequiredForOrder(
+                new PositionGroupInitialMarginForOrderParameters(portfolio, positionGroup, order)
+            ).Value;
+        }
+
+        /// <summary>
+        /// Computes the amount of buying power reserved by the provided position group
+        /// </summary>
+        public static decimal GetReservedBuyingPowerForPositionGroup(
+            this IPositionGroupBuyingPowerModel model,
+            SecurityPortfolioManager portfolio,
+            IPositionGroup positionGroup
+            )
+        {
+            return model.GetReservedBuyingPowerForPositionGroup(
+                new ReservedBuyingPowerForPositionGroupParameters(portfolio, positionGroup)
+            ).AbsoluteUsedBuyingPower;
+        }
+
+        /// <summary>
+        /// Check if there is sufficient buying power for the position group to execute this order.
+        /// </summary>
+        public static HasSufficientBuyingPowerForOrderResult HasSufficientBuyingPowerForOrder(
+            this IPositionGroupBuyingPowerModel model,
+            SecurityPortfolioManager portfolio,
+            IPositionGroup positionGroup,
+            List<Order> orders
+            )
+        {
+            return model.HasSufficientBuyingPowerForOrder(new HasSufficientPositionGroupBuyingPowerForOrderParameters(
+                portfolio, positionGroup, orders
+            ));
+        }
+
+        /// <summary>
+        /// Gets the buying power available for a position group trade
+        /// </summary>
+        public static PositionGroupBuyingPower GetPositionGroupBuyingPower(
+            this IPositionGroupBuyingPowerModel model,
+            SecurityPortfolioManager portfolio,
+            IPositionGroup positionGroup,
+            OrderDirection direction
+            )
+        {
+            return model.GetPositionGroupBuyingPower(new PositionGroupBuyingPowerParameters(
+                portfolio, positionGroup, direction
+            ));
+        }
+    }
+}