Move SqlFunctionCallBase class into its own file

Author: SergeiPavlov

Orm/Xtensive.Orm/Sql/Dml/Expressions/SqlFunctionCall.cs

@@ -10,27 +10,6 @@
 
 namespace Xtensive.Sql.Dml
 {
-  [Serializable]
-  public abstract class SqlFunctionCallBase : SqlExpression
-  {
-    /// <summary>
-    /// Gets the expressions.
-    /// </summary>
-    public IReadOnlyList<SqlExpression> Arguments { get; protected set; }
-
-    internal SqlFunctionCallBase(SqlNodeType nodeType, IEnumerable<SqlExpression> arguments)
-      : base(nodeType)
-    {
-      Arguments = arguments.ToList();
-    }
-
-    internal SqlFunctionCallBase(SqlNodeType nodeType, SqlExpression[] arguments)
-      : base(nodeType)
-    {
-      Arguments = arguments ?? Array.Empty<SqlExpression>();
-    }
-  }
-
   [Serializable]
   public class SqlFunctionCall : SqlFunctionCallBase
   {

Orm/Xtensive.Orm/Sql/Dml/Expressions/SqlFunctionCallBase.cs

@@ -0,0 +1,33 @@
+// Copyright (C) 2003-2022 Xtensive LLC.
+// This code is distributed under MIT license terms.
+// See the License.txt file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using Xtensive.Core;
+
+namespace Xtensive.Sql.Dml
+{
+  [Serializable]
+  public abstract class SqlFunctionCallBase : SqlExpression
+  {
+    /// <summary>
+    /// Gets the expressions.
+    /// </summary>
+    public IReadOnlyList<SqlExpression> Arguments { get; protected set; }
+
+    internal SqlFunctionCallBase(SqlNodeType nodeType, IEnumerable<SqlExpression> arguments)
+      : base(nodeType)
+    {
+      Arguments = arguments.ToList();
+    }
+
+    internal SqlFunctionCallBase(SqlNodeType nodeType, SqlExpression[] arguments)
+      : base(nodeType)
+    {
+      Arguments = arguments ?? Array.Empty<SqlExpression>();
+    }
+  }
+}