Remove the unused operations queue

pkg/analysis_server/lib/src/operation/operation.dart

Index: pkg/analysis_server/lib/src/operation/operation.dart
diff --git a/pkg/analysis_server/lib/src/operation/operation.dart b/pkg/analysis_server/lib/src/operation/operation.dart
deleted file mode 100644
index f7638543f22619851a5d494f28b7ff0d19b01a90..0000000000000000000000000000000000000000
--- a/pkg/analysis_server/lib/src/operation/operation.dart
+++ /dev/null
@@ -1,95 +0,0 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'package:analysis_server/src/analysis_server.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/source.dart';
-
-/**
- * [MergeableOperation] can decide whether other operation can be merged into
- * it, so that it should not be added as a separate operation.
- */
-abstract class MergeableOperation extends ServerOperation {
-  MergeableOperation(AnalysisContext context) : super(context);
-
-  /**
-   * Attempt to merge the given [other] operation into this one, return `true`
-   * in case of success, so that [other] should not be added as a separate
-   * operation.
-   */
-  bool merge(ServerOperation other);
-}
-
-/**
- * The class [ServerOperation] defines the behavior of objects used to perform
- * operations on a [AnalysisServer].
- */
-abstract class ServerOperation {
-  /**
-   * The context for this operation.  Operations will be automatically
-   * de-queued when their context is destroyed.
-   */
-  final AnalysisContext context;
-
-  ServerOperation(this.context);
-
-  /**
-   * Returns the priority of this operation.
-   */
-  ServerOperationPriority get priority;
-
-  /**
-   * Performs the operation implemented by this operation.
-   */
-  void perform(AnalysisServer server);
-}
-
-/**
- * The enumeration [ServerOperationPriority] defines the priority levels used
- * to organize [ServerOperation]s in an optimal order. A smaller ordinal value
- * equates to a higher priority.
- */
-class ServerOperationPriority {
-  static const int COUNT = 6;
-
-  static const ServerOperationPriority ANALYSIS_NOTIFICATION =
-      const ServerOperationPriority._(0, "ANALYSIS_NOTIFICATION");
-
-  static const ServerOperationPriority ANALYSIS_INDEX =
-      const ServerOperationPriority._(1, "ANALYSIS_INDEX");
-
-  static const ServerOperationPriority PRIORITY_ANALYSIS_CONTINUE =
-      const ServerOperationPriority._(2, "PRIORITY_ANALYSIS_CONTINUE");
-
-  static const ServerOperationPriority PRIORITY_ANALYSIS =
-      const ServerOperationPriority._(3, "PRIORITY_ANALYSIS");
-
-  static const ServerOperationPriority ANALYSIS_CONTINUE =
-      const ServerOperationPriority._(4, "ANALYSIS_CONTINUE");
-
-  static const ServerOperationPriority ANALYSIS =
-      const ServerOperationPriority._(5, "ANALYSIS");
-
-  final int ordinal;
-  final String name;
-
-  const ServerOperationPriority._(this.ordinal, this.name);
-
-  @override
-  String toString() => name;
-}
-
-/**
- * [SourceSensitiveOperation] can decide if the operation should be discarded
- * before a change is applied to a [Source].
- */
-abstract class SourceSensitiveOperation extends ServerOperation {
-  SourceSensitiveOperation(AnalysisContext context) : super(context);
-
-  /**
-   * The given [source] is about to be changed.
-   * Check if this [SourceSensitiveOperation] should be discarded.
-   */
-  bool shouldBeDiscardedOnSourceChange(Source source);
-}