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.
+*/
+
+using System;
+
+namespace QuantConnect.Util
+{
+    /// <summary>
+    /// Utility Comparison Operator class
+    /// </summary>
+    public static class ComparisonOperator
+    {
+        /// <summary>
+        /// Compares two values using given operator
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="op">Comparison operator</param>
+        /// <param name="arg1">The first value</param>
+        /// <param name="arg2">The second value</param>
+        /// <returns>Returns true if its left-hand operand meets the operator value to its right-hand operand, false otherwise</returns>
+        public static bool Compare<T>(ComparisonOperatorTypes op, T arg1, T arg2) where T : IComparable
+        {
+            switch (op)
+            {
+                case ComparisonOperatorTypes.Equals:
+                    return arg1.CompareTo(arg2) == 0;
+                case ComparisonOperatorTypes.NotEqual:
+                    return arg1.CompareTo(arg2) != 0;
+                case ComparisonOperatorTypes.Greater:
+                    return arg1.CompareTo(arg2) == 1;
+                case ComparisonOperatorTypes.GreaterOrEqual:
+                    return arg1.CompareTo(arg2) >= 0;
+                case ComparisonOperatorTypes.Less:
+                    return arg1.CompareTo(arg2) == -1;
+                case ComparisonOperatorTypes.LessOrEqual:
+                    return arg1.CompareTo(arg2) <= 0;
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(op), $"Operator '{op}' is not supported.");
+            }
+        }
+    }
+}