Fix CA1852

OpenRA.Game/Actor.cs

@@ -81,7 +81,7 @@ namespace OpenRA
 		/// <summary>Value used to represent an invalid token.</summary>
 		public static readonly int InvalidConditionToken = -1;
 
-		class ConditionState
+		sealed class ConditionState
 		{
 			/// <summary>Delegates that have registered to be notified when this condition changes.</summary>
 			public readonly List<VariableObserverNotifier> Notifiers = new();

OpenRA.Game/FileSystem/ZipFile.cs

@@ -190,7 +190,7 @@ namespace OpenRA.FileSystem
 			public void Dispose() { /* nothing to do */ }
 		}
 
-		class StaticStreamDataSource : IStaticDataSource
+		sealed class StaticStreamDataSource : IStaticDataSource
 		{
 			readonly Stream s;
 			public StaticStreamDataSource(Stream s)

OpenRA.Game/Graphics/CursorManager.cs

@@ -17,7 +17,7 @@ namespace OpenRA.Graphics
 {
 	public sealed class CursorManager
 	{
-		class Cursor
+		sealed class Cursor
 		{
 			public string Name;
 			public int2 PaddedSize;

OpenRA.Game/Graphics/Model.cs

@@ -62,7 +62,7 @@ namespace OpenRA.Graphics
 	{
 		public Action<string> OnMissingModelError { get; set; }
 
-		class PlaceholderModelCache : IModelCache
+		sealed class PlaceholderModelCache : IModelCache
 		{
 			public IVertexBuffer<Vertex> VertexBuffer => throw new NotImplementedException();
 

OpenRA.Game/Graphics/Palette.cs

@@ -40,7 +40,7 @@ namespace OpenRA.Graphics
 			return new ReadOnlyPalette(palette);
 		}
 
-		class ReadOnlyPalette : IPalette
+		sealed class ReadOnlyPalette : IPalette
 		{
 			readonly IPalette palette;
 			public ReadOnlyPalette(IPalette palette) { this.palette = palette; }

OpenRA.Game/Graphics/SpriteFont.cs

@@ -427,7 +427,7 @@ namespace OpenRA.Graphics
 		}
 	}
 
-	class GlyphInfo
+	sealed class GlyphInfo
 	{
 		public float Advance;
 		public int2 Offset;

OpenRA.Game/Map/Map.cs

@@ -65,7 +65,7 @@ namespace OpenRA
 		MissionSelector = 4
 	}
 
-	class MapField
+	sealed class MapField
 	{
 		enum Type { Normal, NodeList, MiniYaml }
 		readonly FieldInfo field;

OpenRA.Game/Map/MapPreview.cs

@@ -64,7 +64,7 @@ namespace OpenRA
 	public class MapPreview : IDisposable, IReadOnlyFileSystem
 	{
 		/// <summary>Wrapper that enables map data to be replaced in an atomic fashion.</summary>
-		class InnerData
+		sealed class InnerData
 		{
 			public int MapFormat;
 			public string Title;

OpenRA.Game/Network/GeoIP.cs

@@ -21,7 +21,7 @@ namespace OpenRA.Network
 {
 	public class GeoIP
 	{
-		class IP2LocationReader
+		sealed class IP2LocationReader
 		{
 			public readonly DateTime Date;
 			readonly Stream stream;

OpenRA.Game/Network/ReplayConnection.cs

@@ -18,7 +18,7 @@ namespace OpenRA.Network
 {
 	public sealed class ReplayConnection : IConnection
 	{
-		class Chunk
+		sealed class Chunk
 		{
 			public int Frame;
 			public (int ClientId, byte[] Packet)[] Packets;

OpenRA.Game/Network/SyncReport.cs

@@ -19,7 +19,7 @@ using OpenRA.Primitives;
 
 namespace OpenRA.Network
 {
-	class SyncReport
+	sealed class SyncReport
 	{
 		const int NumSyncReports = 7;
 		static readonly Cache<Type, TypeInfo> TypeInfoCache = new(t => new TypeInfo(t));
@@ -161,7 +161,7 @@ namespace OpenRA.Network
 				Log.Write("sync", $"Recorded frames do not contain the frame {frame}. No sync report available!");
 		}
 
-		class Report
+		sealed class Report
 		{
 			public int Frame;
 			public int SyncedRandom;

OpenRA.Game/Server/PlayerMessageTracker.cs

@@ -14,7 +14,7 @@ using System.Collections.Generic;
 
 namespace OpenRA.Server
 {
-	class PlayerMessageTracker
+	sealed class PlayerMessageTracker
 	{
 		[TranslationReference("remaining")]
 		const string ChatTemporaryDisabled = "notification-chat-temp-disabled";

OpenRA.Game/Server/Server.cs

@@ -1441,7 +1441,7 @@ namespace OpenRA.Server
 
 		interface IServerEvent { void Invoke(Server server); }
 
-		class ConnectionConnectEvent : IServerEvent
+		sealed class ConnectionConnectEvent : IServerEvent
 		{
 			readonly Socket socket;
 			public ConnectionConnectEvent(Socket socket)
@@ -1455,7 +1455,7 @@ namespace OpenRA.Server
 			}
 		}
 
-		class ConnectionDisconnectEvent : IServerEvent
+		sealed class ConnectionDisconnectEvent : IServerEvent
 		{
 			readonly Connection connection;
 			public ConnectionDisconnectEvent(Connection connection)
@@ -1469,7 +1469,7 @@ namespace OpenRA.Server
 			}
 		}
 
-		class ConnectionPacketEvent : IServerEvent
+		sealed class ConnectionPacketEvent : IServerEvent
 		{
 			readonly Connection connection;
 			readonly int frame;
@@ -1488,7 +1488,7 @@ namespace OpenRA.Server
 			}
 		}
 
-		class ConnectionPingEvent : IServerEvent
+		sealed class ConnectionPingEvent : IServerEvent
 		{
 			readonly Connection connection;
 			readonly int[] pingHistory;
@@ -1511,7 +1511,7 @@ namespace OpenRA.Server
 			}
 		}
 
-		class CallbackEvent : IServerEvent
+		sealed class CallbackEvent : IServerEvent
 		{
 			readonly Action action;
 

OpenRA.Game/Support/AssemblyLoader.cs

@@ -97,7 +97,7 @@ namespace OpenRA.Support
 		}
 	}
 
-	class ManagedLoadContext : AssemblyLoadContext
+	sealed class ManagedLoadContext : AssemblyLoadContext
 	{
 		readonly string basePath;
 		readonly Dictionary<string, ManagedLibrary> managedAssemblies;

OpenRA.Game/Support/Benchmark.cs

@@ -14,7 +14,7 @@ using System.Globalization;
 
 namespace OpenRA.Support
 {
-	class Benchmark
+	sealed class Benchmark
 	{
 		readonly string prefix;
 		readonly Dictionary<string, List<BenchmarkPoint>> samples = new();
@@ -30,7 +30,7 @@ namespace OpenRA.Support
 				samples.GetOrAdd(item.Key).Add(new BenchmarkPoint(localTick, item.Value.LastValue));
 		}
 
-		class BenchmarkPoint
+		sealed class BenchmarkPoint
 		{
 			public int Tick { get; }
 			public double Value { get; }

OpenRA.Game/Support/VariableExpression.cs

@@ -551,7 +551,7 @@ namespace OpenRA.Support
 			}
 		}
 
-		class VariableToken : Token
+		sealed class VariableToken : Token
 		{
 			public readonly string Name;
 
@@ -561,7 +561,7 @@ namespace OpenRA.Support
 				: base(TokenType.Variable, index) { Name = symbol; }
 		}
 
-		class NumberToken : Token
+		sealed class NumberToken : Token
 		{
 			public readonly int Value;
 			readonly string symbol;
@@ -714,7 +714,7 @@ namespace OpenRA.Support
 			return Expressions.Expression.Condition(test, ifTrue, ifFalse);
 		}
 
-		class AstStack
+		sealed class AstStack
 		{
 			readonly List<Expression> expressions = new();
 			readonly List<ExpressionType> types = new();
@@ -772,7 +772,7 @@ namespace OpenRA.Support
 			}
 		}
 
-		class Compiler
+		sealed class Compiler
 		{
 			readonly AstStack ast = new();
 

OpenRA.Game/TraitDictionary.cs

@@ -39,7 +39,7 @@ namespace OpenRA
 	/// <summary>
 	/// Provides efficient ways to query a set of actors by their traits.
 	/// </summary>
-	class TraitDictionary
+	sealed class TraitDictionary
 	{
 		static readonly Func<Type, ITraitContainer> CreateTraitContainer = t =>
 			(ITraitContainer)typeof(TraitContainer<>).MakeGenericType(t).GetConstructor(Type.EmptyTypes).Invoke(null);
@@ -141,7 +141,7 @@ namespace OpenRA
 			int Queries { get; }
 		}
 
-		class TraitContainer<T> : ITraitContainer
+		sealed class TraitContainer<T> : ITraitContainer
 		{
 			readonly List<Actor> actors = new();
 			readonly List<T> traits = new();
@@ -185,7 +185,7 @@ namespace OpenRA
 				return new MultipleEnumerable(this, actor);
 			}
 
-			class MultipleEnumerable : IEnumerable<T>
+			sealed class MultipleEnumerable : IEnumerable<T>
 			{
 				readonly TraitContainer<T> container;
 				readonly uint actor;

OpenRA.Game/Traits/Player/Shroud.cs

@@ -76,7 +76,7 @@ namespace OpenRA.Traits
 		public int RevealedCells { get; private set; }
 
 		enum ShroudCellType : byte { Shroud, Fog, Visible }
-		class ShroudSource
+		sealed class ShroudSource
 		{
 			public readonly SourceType Type;
 			public readonly PPos[] ProjectedCells;

OpenRA.Game/UtilityCommands/ClearInvalidModRegistrationsCommand.cs

@@ -13,7 +13,7 @@ using System.Linq;
 
 namespace OpenRA.UtilityCommands
 {
-	class ClearInvalidModRegistrationsCommand : IUtilityCommand
+	sealed class ClearInvalidModRegistrationsCommand : IUtilityCommand
 	{
 		string IUtilityCommand.Name => "--clear-invalid-mod-registrations";
 

OpenRA.Game/UtilityCommands/RegisterModCommand.cs

@@ -13,7 +13,7 @@ using System.Linq;
 
 namespace OpenRA.UtilityCommands
 {
-	class RegisterModCommand : IUtilityCommand
+	sealed class RegisterModCommand : IUtilityCommand
 	{
 		string IUtilityCommand.Name => "--register-mod";
 

OpenRA.Game/UtilityCommands/UnregisterModCommand.cs

@@ -13,7 +13,7 @@ using System.Linq;
 
 namespace OpenRA.UtilityCommands
 {
-	class UnregisterModCommand : IUtilityCommand
+	sealed class UnregisterModCommand : IUtilityCommand
 	{
 		string IUtilityCommand.Name => "--unregister-mod";