Add an analysis server option to enable null-aware-operator support.

pkg/analysis_server/lib/src/generated_protocol.dart

 // 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.
 //
 // This file has been automatically generated.  Please do not edit it manually.
 // To regenerate the file, use the script
 // "pkg/analysis_server/tool/spec/generate_files".
 
 part of protocol;
 /**
@@ skipping 5626 matching lines @@
   String toJson() => name;
 }
 
 /**
  * AnalysisOptions
  *
  * {
  *   "enableAsync": optional bool
  *   "enableDeferredLoading": optional bool
  *   "enableEnums": optional bool
+ *   "enableNullAwareOperators": optional bool
  *   "generateDart2jsHints": optional bool
  *   "generateHints": optional bool
  *   "generateLints": optional bool
  * }
  */
 class AnalysisOptions implements HasToJson {
   /**
-   * Deprecated/
+   * Deprecated
    *
    * True if the client wants to enable support for the proposed async feature.
    */
   bool enableAsync;
 
   /**
-   * Deprecated/
+   * Deprecated
    *
    * True if the client wants to enable support for the proposed deferred
    * loading feature.
    */
   bool enableDeferredLoading;
 
   /**
-   * Deprecated/
+   * Deprecated
    *
    * True if the client wants to enable support for the proposed enum feature.
    */
   bool enableEnums;
 
   /**
+   * True if the client wants to enable support for the proposed "null aware
+   * operators" feature.
+   */
+  bool enableNullAwareOperators;
+
+  /**
    * True if hints that are specific to dart2js should be generated. This
    * option is ignored if generateHints is false.
    */
   bool generateDart2jsHints;
 
   /**
    * True if hints should be generated as part of generating errors and
    * warnings.
    */
   bool generateHints;
 
   /**
    * True if lints should be generated as part of generating errors and
    * warnings.
    */
   bool generateLints;
 
-  AnalysisOptions({this.enableAsync, this.enableDeferredLoading, this.enableEnums, this.generateDart2jsHints, this.generateHints, this.generateLints});
+  AnalysisOptions({this.enableAsync, this.enableDeferredLoading, this.enableEnums, this.enableNullAwareOperators, this.generateDart2jsHints, this.generateHints, this.generateLints});
 
   factory AnalysisOptions.fromJson(JsonDecoder jsonDecoder, String jsonPath, Object json) {
     if (json == null) {
       json = {};
     }
     if (json is Map) {
       bool enableAsync;
       if (json.containsKey("enableAsync")) {
         enableAsync = jsonDecoder._decodeBool(jsonPath + ".enableAsync", json["enableAsync"]);
       }
       bool enableDeferredLoading;
       if (json.containsKey("enableDeferredLoading")) {
         enableDeferredLoading = jsonDecoder._decodeBool(jsonPath + ".enableDeferredLoading", json["enableDeferredLoading"]);
       }
       bool enableEnums;
       if (json.containsKey("enableEnums")) {
         enableEnums = jsonDecoder._decodeBool(jsonPath + ".enableEnums", json["enableEnums"]);
       }
+      bool enableNullAwareOperators;
+      if (json.containsKey("enableNullAwareOperators")) {
+        enableNullAwareOperators = jsonDecoder._decodeBool(jsonPath + ".enableNullAwareOperators", json["enableNullAwareOperators"]);
+      }
       bool generateDart2jsHints;
       if (json.containsKey("generateDart2jsHints")) {
         generateDart2jsHints = jsonDecoder._decodeBool(jsonPath + ".generateDart2jsHints", json["generateDart2jsHints"]);
       }
       bool generateHints;
       if (json.containsKey("generateHints")) {
         generateHints = jsonDecoder._decodeBool(jsonPath + ".generateHints", json["generateHints"]);
       }
       bool generateLints;
       if (json.containsKey("generateLints")) {
         generateLints = jsonDecoder._decodeBool(jsonPath + ".generateLints", json["generateLints"]);
       }
-      return new AnalysisOptions(enableAsync: enableAsync, enableDeferredLoading: enableDeferredLoading, enableEnums: enableEnums, generateDart2jsHints: generateDart2jsHints, generateHints: generateHints, generateLints: generateLints);
+      return new AnalysisOptions(enableAsync: enableAsync, enableDeferredLoading: enableDeferredLoading, enableEnums: enableEnums, enableNullAwareOperators: enableNullAwareOperators, generateDart2jsHints: generateDart2jsHints, generateHints: generateHints, generateLints: generateLints);
     } else {
       throw jsonDecoder.mismatch(jsonPath, "AnalysisOptions");
     }
   }
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> result = {};
     if (enableAsync != null) {
       result["enableAsync"] = enableAsync;
     }
     if (enableDeferredLoading != null) {
       result["enableDeferredLoading"] = enableDeferredLoading;
     }
     if (enableEnums != null) {
       result["enableEnums"] = enableEnums;
     }
+    if (enableNullAwareOperators != null) {
+      result["enableNullAwareOperators"] = enableNullAwareOperators;
+    }
     if (generateDart2jsHints != null) {
       result["generateDart2jsHints"] = generateDart2jsHints;
     }
     if (generateHints != null) {
       result["generateHints"] = generateHints;
     }
     if (generateLints != null) {
       result["generateLints"] = generateLints;
     }
     return result;
   }
 
   @override
   String toString() => JSON.encode(toJson());
 
   @override
   bool operator==(other) {
     if (other is AnalysisOptions) {
       return enableAsync == other.enableAsync &&
           enableDeferredLoading == other.enableDeferredLoading &&
           enableEnums == other.enableEnums &&
+          enableNullAwareOperators == other.enableNullAwareOperators &&
           generateDart2jsHints == other.generateDart2jsHints &&
           generateHints == other.generateHints &&
           generateLints == other.generateLints;
     }
     return false;
   }
 
   @override
   int get hashCode {
     int hash = 0;
     hash = _JenkinsSmiHash.combine(hash, enableAsync.hashCode);
     hash = _JenkinsSmiHash.combine(hash, enableDeferredLoading.hashCode);
     hash = _JenkinsSmiHash.combine(hash, enableEnums.hashCode);
+    hash = _JenkinsSmiHash.combine(hash, enableNullAwareOperators.hashCode);
     hash = _JenkinsSmiHash.combine(hash, generateDart2jsHints.hashCode);
     hash = _JenkinsSmiHash.combine(hash, generateHints.hashCode);
     hash = _JenkinsSmiHash.combine(hash, generateLints.hashCode);
     return _JenkinsSmiHash.finish(hash);
   }
 }
 
 /**
  * AnalysisService
  *
@@ skipping 5573 matching lines @@
     return false;
   }
 
   @override
   int get hashCode {
     int hash = 0;
     hash = _JenkinsSmiHash.combine(hash, newName.hashCode);
     return _JenkinsSmiHash.finish(hash);
   }
 }