Add the generator and the generated files

pkg/analyzer_plugin/lib/protocol/protocol.dart

Index: pkg/analyzer_plugin/lib/protocol/protocol.dart
diff --git a/pkg/analyzer_plugin/lib/protocol/protocol.dart b/pkg/analyzer_plugin/lib/protocol/protocol.dart
new file mode 100644
index 0000000000000000000000000000000000000000..4c2b705bd28696fe72ce8dd82cf19b924d242c57
--- /dev/null
+++ b/pkg/analyzer_plugin/lib/protocol/protocol.dart
@@ -0,0 +1,583 @@
+// Copyright (c) 2017, 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 'dart:collection';
+
+import 'package:analyzer_plugin/protocol/generated_protocol.dart';
+import 'package:analyzer_plugin/src/protocol/protocol_internal.dart';
+
+/**
+ * An interface for enumerated types in the protocol.
+ *
+ * Clients may not extend, implement or mix-in this class.
+ */
+abstract class Enum {
+  /**
+   * The name of the enumerated value. This should match the name of the static
+   * getter which provides access to this enumerated value.
+   */
+  String get name;
+}
+
+/**
+ * A notification that can be sent to the server about an event that occurred.
+ *
+ * Clients may not extend, implement or mix-in this class.
+ */
+class Notification {
+  /**
+   * The name of the JSON attribute containing the name of the event that
+   * triggered the notification.
+   */
+  static const String EVENT = 'event';
+
+  /**
+   * The name of the JSON attribute containing the result values.
+   */
+  static const String PARAMS = 'params';
+
+  /**
+   * The name of the event that triggered the notification.
+   */
+  final String event;
+
+  /**
+   * A table mapping the names of notification parameters to their values, or
+   * `null` if there are no notification parameters.
+   */
+  Map<String, Object> params;
+
+  /**
+   * Initialize a newly created [Notification] to have the given [event] name.
+   * If [params] is provided, it will be used as the params; otherwise no
+   * params will be used.
+   */
+  Notification(this.event, [this.params]);
+
+  /**
+   * Initialize a newly created instance based on the given JSON data.
+   */
+  factory Notification.fromJson(Map json) {
+    return new Notification(json[Notification.EVENT],
+        json[Notification.PARAMS] as Map<String, Object>);
+  }
+
+  /**
+   * Return a table representing the structure of the Json object that will be
+   * sent to the client to represent this response.
+   */
+  Map<String, Object> toJson() {
+    Map<String, Object> jsonObject = {};
+    jsonObject[EVENT] = event;
+    if (params != null) {
+      jsonObject[PARAMS] = params;
+    }
+    return jsonObject;
+  }
+}
+
+/**
+ * A request that was received from the server.
+ *
+ * Clients may not extend, implement or mix-in this class.
+ */
+class Request {
+  /**
+   * The name of the JSON attribute containing the id of the request.
+   */
+  static const String ID = 'id';
+
+  /**
+   * The name of the JSON attribute containing the name of the request.
+   */
+  static const String METHOD = 'method';
+
+  /**
+   * The name of the JSON attribute containing the request parameters.
+   */
+  static const String PARAMS = 'params';
+
+  /**
+   * The name of the optional JSON attribute indicating the time (milliseconds
+   * since epoch) at which the server made the request.
+   */
+  static const String SERVER_REQUEST_TIME = 'serverRequestTime';
+
+  /**
+   * The unique identifier used to identify this request.
+   */
+  final String id;
+
+  /**
+   * The method being requested.
+   */
+  final String method;
+
+  /**
+   * A table mapping the names of request parameters to their values.
+   */
+  final Map<String, Object> params;
+
+  /**
+   * The time (milliseconds since epoch) at which the server made the request,
+   * or `null` if this information is not provided by the server.
+   */
+  final int serverRequestTime;
+
+  /**
+   * Initialize a newly created [Request] to have the given [id] and [method]
+   * name. If [params] is supplied, it is used as the "params" map for the
+   * request. Otherwise an empty "params" map is allocated.
+   */
+  Request(this.id, this.method,
+      [Map<String, Object> params, this.serverRequestTime])
+      : params = params ?? <String, Object>{};
+
+  /**
+   * Return a request parsed from the given json, or `null` if the [data] is
+   * not a valid json representation of a request. The [data] is expected to
+   * have the following format:
+   *
+   *   {
+   *     'clientRequestTime': millisecondsSinceEpoch
+   *     'id': String,
+   *     'method': methodName,
+   *     'params': {
+   *       paramter_name: value
+   *     }
+   *   }
+   *
+   * where both the parameters and clientRequestTime are optional.
+   *
+   * The parameters can contain any number of name/value pairs. The
+   * clientRequestTime must be an int representing the time at which the client
+   * issued the request (milliseconds since epoch).
+   */
+  factory Request.fromJson(Map<String, Object> result) {
+    var id = result[Request.ID];
+    var method = result[Request.METHOD];
+    if (id is! String || method is! String) {
+      return null;
+    }
+    var time = result[Request.SERVER_REQUEST_TIME];
+    if (time != null && time is! int) {
+      return null;
+    }
+    var params = result[Request.PARAMS];
+    if (params is Map || params == null) {
+      return new Request(id, method, params as Map<String, Object>, time);
+    } else {
+      return null;
+    }
+  }
+
+  @override
+  int get hashCode {
+    return id.hashCode;
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return other is Request &&
+        id == other.id &&
+        method == other.method &&
+        serverRequestTime == other.serverRequestTime &&
+        _equalMaps(params, other.params);
+  }
+
+  /**
+   * Return a table representing the structure of the Json object that will be
+   * sent to the server to represent this response.
+   */
+  Map<String, Object> toJson() {
+    Map<String, Object> jsonObject = {};
+    jsonObject[ID] = id;
+    jsonObject[METHOD] = method;
+    if (params.isNotEmpty) {
+      jsonObject[PARAMS] = params;
+    }
+    if (serverRequestTime != null) {
+      jsonObject[SERVER_REQUEST_TIME] = serverRequestTime;
+    }
+    return jsonObject;
+  }
+
+  bool _equalLists(List first, List second) {
+    if (first == null) {
+      return second == null;
+    }
+    if (second == null) {
+      return false;
+    }
+    int length = first.length;
+    if (length != second.length) {
+      return false;
+    }
+    for (int i = 0; i < length; i++) {
+      if (!_equalObjects(first[i], second[i])) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  bool _equalMaps(Map first, Map second) {
+    if (first == null) {
+      return second == null;
+    }
+    if (second == null) {
+      return false;
+    }
+    if (first.length != second.length) {
+      return false;
+    }
+    for (var key in first.keys) {
+      if (!second.containsKey(key)) {
+        return false;
+      }
+      if (!_equalObjects(first[key], second[key])) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  bool _equalObjects(Object first, Object second) {
+    if (first == null) {
+      return second == null;
+    }
+    if (second == null) {
+      return false;
+    }
+    if (first is Map) {
+      if (second is Map) {
+        return _equalMaps(first, second);
+      }
+      return false;
+    }
+    if (first is List) {
+      if (second is List) {
+        return _equalLists(first, second);
+      }
+      return false;
+    }
+    return first == second;
+  }
+}
+
+/**
+ * A collection of utility methods that create instances of the generated class
+ * [RequestError].
+ */
+class RequestErrorFactory {
+//  /**
+//   * Initialize a newly created instance to represent the
+//   * GET_ERRORS_INVALID_FILE error condition.
+//   */
+//  Response.getErrorsInvalidFile(Request request)
+//      : this(request.id,
+//      error: new RequestError(RequestErrorCode.GET_ERRORS_INVALID_FILE,
+//          'Error during `analysis.getErrors`: invalid file.'));
+//
+//  /**
+//   * Initialize a newly created instance to represent the
+//   * GET_NAVIGATION_INVALID_FILE error condition.
+//   */
+//  Response.getNavigationInvalidFile(Request request)
+//      : this(request.id,
+//      error: new RequestError(
+//          RequestErrorCode.GET_NAVIGATION_INVALID_FILE,
+//          'Error during `analysis.getNavigation`: invalid file.'));
+//
+//  /**
+//   * Initialize a newly created instance to represent the
+//   * GET_REACHABLE_SOURCES_INVALID_FILE error condition.
+//   */
+//  Response.getReachableSourcesInvalidFile(Request request)
+//      : this(request.id,
+//      error: new RequestError(
+//          RequestErrorCode.GET_REACHABLE_SOURCES_INVALID_FILE,
+//          'Error during `analysis.getReachableSources`: invalid file.'));
+//
+//  /**
+//   * Initialize a newly created instance to represent an error condition caused
+//   * by an analysis.reanalyze [request] that specifies an analysis root that is
+//   * not in the current list of analysis roots.
+//   */
+//  Response.invalidAnalysisRoot(Request request, String rootPath)
+//      : this(request.id,
+//      error: new RequestError(RequestErrorCode.INVALID_ANALYSIS_ROOT,
+//          "Invalid analysis root: $rootPath"));
+//
+//  /**
+//   * Initialize a newly created instance to represent an error condition caused
+//   * by a [request] that specifies an execution context whose context root does
+//   * not exist.
+//   */
+//  Response.invalidExecutionContext(Request request, String contextId)
+//      : this(request.id,
+//      error: new RequestError(RequestErrorCode.INVALID_EXECUTION_CONTEXT,
+//          "Invalid execution context: $contextId"));
+//
+//  /**
+//   * Initialize a newly created instance to represent the
+//   * INVALID_FILE_PATH_FORMAT error condition.
+//   */
+//  Response.invalidFilePathFormat(Request request, path)
+//      : this(request.id,
+//      error: new RequestError(RequestErrorCode.INVALID_FILE_PATH_FORMAT,
+//          'Invalid file path format: $path'));
+
+  /**
+   * Return a request error representing an error condition caused by a
+   * [request] that had invalid parameter.  [path] is the path to the
+   * invalid parameter, in Javascript notation (e.g. "foo.bar" means that the
+   * parameter "foo" contained a key "bar" whose value was the wrong type).
+   * [expectation] is a description of the type of data that was expected.
+   */
+  static RequestError invalidParameter(
+          Request request, String path, String expectation) =>
+      new RequestError(RequestErrorCode.INVALID_PARAMETER,
+          "Invalid parameter '$path'. $expectation.");
+
+//  /**
+//   * Initialize a newly created instance to represent an error condition caused
+//   * by a malformed request.
+//   */
+//  Response.invalidRequestFormat()
+//      : this('',
+//      error: new RequestError(
+//          RequestErrorCode.INVALID_REQUEST, 'Invalid request'));
+//
+//  /**
+//   * Initialize a newly created instance to represent an error condition caused
+//   * by a request that requires an index, but indexing is disabled.
+//   */
+//  Response.noIndexGenerated(Request request)
+//      : this(request.id,
+//      error: new RequestError(
+//          RequestErrorCode.NO_INDEX_GENERATED, 'Indexing is disabled'));
+//
+//  /**
+//   * Initialize a newly created instance to represent the
+//   * ORGANIZE_DIRECTIVES_ERROR error condition.
+//   */
+//  Response.organizeDirectivesError(Request request, String message)
+//      : this(request.id,
+//      error: new RequestError(
+//          RequestErrorCode.ORGANIZE_DIRECTIVES_ERROR, message));
+//
+//  /**
+//   * Initialize a newly created instance to represent the
+//   * REFACTORING_REQUEST_CANCELLED error condition.
+//   */
+//  Response.refactoringRequestCancelled(Request request)
+//      : this(request.id,
+//      error: new RequestError(
+//          RequestErrorCode.REFACTORING_REQUEST_CANCELLED,
+//          'The `edit.getRefactoring` request was cancelled.'));
+
+  /**
+   * Return a request error representing an error that occurred in the plugin.
+   */
+  static RequestError pluginError(Request request, exception, stackTrace) =>
+      new RequestError(RequestErrorCode.PLUGIN_ERROR, exception.toString(),
+          stackTrace: stackTrace);
+
+//  /**
+//   * Initialize a newly created instance to represent the
+//   * SORT_MEMBERS_INVALID_FILE error condition.
+//   */
+//  Response.sortMembersInvalidFile(Request request)
+//      : this(request.id,
+//      error: new RequestError(RequestErrorCode.SORT_MEMBERS_INVALID_FILE,
+//          'Error during `edit.sortMembers`: invalid file.'));
+//
+//  /**
+//   * Initialize a newly created instance to represent the
+//   * SORT_MEMBERS_PARSE_ERRORS error condition.
+//   */
+//  Response.sortMembersParseErrors(Request request, int numErrors)
+//      : this(request.id,
+//      error: new RequestError(RequestErrorCode.SORT_MEMBERS_PARSE_ERRORS,
+//          'Error during `edit.sortMembers`: file has $numErrors scan/parse errors.'));
+//
+//  /**
+//   * Initialize a newly created instance to represent an error condition caused
+//   * by a `analysis.setPriorityFiles` [request] that includes one or more files
+//   * that are not being analyzed.
+//   */
+//  Response.unanalyzedPriorityFiles(String requestId, String fileNames)
+//      : this(requestId,
+//      error: new RequestError(RequestErrorCode.UNANALYZED_PRIORITY_FILES,
+//          "Unanalyzed files cannot be a priority: '$fileNames'"));
+
+  /**
+   * Return a request error representing an error condition caused by a
+   * [request] that cannot be handled by any known handlers.
+   */
+  static RequestError unknownRequest(Request request) =>
+      new RequestError(RequestErrorCode.UNKNOWN_REQUEST, 'Unknown request');
+
+//  /**
+//   * Initialize a newly created instance to represent an error condition caused
+//   * by a [request] referencing a source that does not exist.
+//   */
+//  Response.unknownSource(Request request)
+//      : this(request.id,
+//      error: new RequestError(
+//          RequestErrorCode.UNKNOWN_SOURCE, 'Unknown source'));
+//
+//  /**
+//   * Initialize a newly created instance to represent an error condition caused
+//   * by a [request] for a service that is not supported.
+//   */
+//  Response.unsupportedFeature(String requestId, String message)
+//      : this(requestId,
+//      error: new RequestError(
+//          RequestErrorCode.UNSUPPORTED_FEATURE, message));
+}
+
+/**
+ * An exception that occurred during the handling of a request that requires
+ * that an error be returned to the server.
+ *
+ * Clients may not extend, implement or mix-in this class.
+ */
+class RequestFailure implements Exception {
+  /**
+   * A description of the error that was encountered.
+   */
+  final RequestError error;
+
+  /**
+   * Initialize a newly created exception to return a response with the given
+   * [error].
+   */
+  RequestFailure(this.error);
+}
+
+/**
+ * A response to the server.
+ *
+ * Clients may not extend, implement or mix-in this class.
+ */
+class Response {
+  /**
+   * The [Response] instance that is returned when a real [Response] cannot
+   * be provided at the moment.
+   */
+  static final Response DELAYED_RESPONSE = new Response('DELAYED_RESPONSE');
+
+  /**
+   * The name of the JSON attribute containing the id of the request for which
+   * this is a response.
+   */
+  static const String ID = 'id';
+
+  /**
+   * The name of the JSON attribute containing the error message.
+   */
+  static const String ERROR = 'error';
+
+  /**
+   * The name of the JSON attribute containing the result values.
+   */
+  static const String RESULT = 'result';
+
+  /**
+   * The unique identifier used to identify the request that this response is
+   * associated with.
+   */
+  final String id;
+
+  /**
+   * The error that was caused by attempting to handle the request, or `null` if
+   * there was no error.
+   */
+  final RequestError error;
+
+  /**
+   * A table mapping the names of result fields to their values.  Should be
+   * `null` if there is no result to send.
+   */
+  Map<String, Object> result;
+
+  /**
+   * Initialize a newly created instance to represent a response to a request
+   * with the given [id].  If [_result] is provided, it will be used as the
+   * result; otherwise an empty result will be used.  If an [error] is provided
+   * then the response will represent an error condition.
+   */
+  Response(this.id, {Map<String, Object> result, this.error}) : result = result;
+
+//  /**
+//   * Initialize a newly created instance to represent the FILE_NOT_ANALYZED
+//   * error condition.
+//   */
+//  Response.fileNotAnalyzed(Request request, String file)
+//      : this(request.id,
+//      error: new RequestError(RequestErrorCode.FILE_NOT_ANALYZED,
+//          'File is not analyzed: $file.'));
+//
+//  /**
+//   * Initialize a newly created instance to represent the FORMAT_INVALID_FILE
+//   * error condition.
+//   */
+//  Response.formatInvalidFile(Request request)
+//      : this(request.id,
+//      error: new RequestError(RequestErrorCode.FORMAT_INVALID_FILE,
+//          'Error during `edit.format`: invalid file.'));
+//
+//  /**
+//   * Initialize a newly created instance to represent the FORMAT_WITH_ERROR
+//   * error condition.
+//   */
+//  Response.formatWithErrors(Request request)
+//      : this(request.id,
+//      error: new RequestError(RequestErrorCode.FORMAT_WITH_ERRORS,
+//          'Error during `edit.format`: source contains syntax errors.'));
+
+  /**
+   * Initialize a newly created instance based on the given JSON data.
+   */
+  factory Response.fromJson(Map json) {
+    try {
+      Object id = json[Response.ID];
+      if (id is! String) {
+        return null;
+      }
+      Object error = json[Response.ERROR];
+      RequestError decodedError;
+      if (error is Map) {
+        decodedError = new RequestError.fromJson(
+            new ResponseDecoder(null), '.error', error);
+      }
+      Object result = json[Response.RESULT];
+      Map<String, Object> decodedResult;
+      if (result is Map) {
+        decodedResult = result as Map<String, Object>;
+      }
+      return new Response(id, error: decodedError, result: decodedResult);
+    } catch (exception) {
+      return null;
+    }
+  }
+
+  /**
+   * Return a table representing the structure of the Json object that will be
+   * sent to the client to represent this response.
+   */
+  Map<String, Object> toJson() {
+    Map<String, Object> jsonObject = new HashMap<String, Object>();
+    jsonObject[ID] = id;
+    if (error != null) {
+      jsonObject[ERROR] = error.toJson();
+    }
+    if (result != null) {
+      jsonObject[RESULT] = result;
+    }
+    return jsonObject;
+  }
+}