Make RefactoringProblem.location optional.

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/spec/generate_files".
 
 part of protocol2;
 
@@ skipping 7434 matching lines @@
 
   String toJson() => name;
 }
 
 /**
  * RefactoringProblem
  *
  * {
  *   "severity": RefactoringProblemSeverity
  *   "message": String
- *   "location": Location
+ *   "location": optional Location
  * }
  */
 class RefactoringProblem implements HasToJson {
   /**
    * The severity of the problem being represented.
    */
   RefactoringProblemSeverity severity;
 
   /**
    * A human-readable description of the problem being represented.
    */
   String message;
 
   /**
-   * The location of the problem being represented.
+   * The location of the problem being represented. This field is omitted
+   * unless there is a specific location associated with the problem (such as a
+   * location where an element being renamed will be shadowed).
    */
   Location location;
 
-  RefactoringProblem(this.severity, this.message, this.location);
+  RefactoringProblem(this.severity, this.message, {this.location});
 
   factory RefactoringProblem.fromJson(JsonDecoder jsonDecoder, String jsonPath, Object json) {
     if (json == null) {
       json = {};
     }
     if (json is Map) {
       RefactoringProblemSeverity severity;
       if (json.containsKey("severity")) {
         severity = new RefactoringProblemSeverity.fromJson(jsonDecoder, jsonPath + ".severity", json["severity"]);
       } else {
         throw jsonDecoder.missingKey(jsonPath, "severity");
       }
       String message;
       if (json.containsKey("message")) {
         message = jsonDecoder._decodeString(jsonPath + ".message", json["message"]);
       } else {
         throw jsonDecoder.missingKey(jsonPath, "message");
       }
       Location location;
       if (json.containsKey("location")) {
         location = new Location.fromJson(jsonDecoder, jsonPath + ".location", json["location"]);
-      } else {
-        throw jsonDecoder.missingKey(jsonPath, "location");
       }
-      return new RefactoringProblem(severity, message, location);
+      return new RefactoringProblem(severity, message, location: location);
     } else {
       throw jsonDecoder.mismatch(jsonPath, "RefactoringProblem");
     }
   }
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> result = {};
     result["severity"] = severity.toJson();
     result["message"] = message;
-    result["location"] = location.toJson();
+    if (location != null) {
+      result["location"] = location.toJson();
+    }
     return result;
   }
 
   @override
   String toString() => JSON.encode(toJson());
 
   @override
   bool operator==(other) {
     if (other is RefactoringProblem) {
       return severity == other.severity &&
@@ skipping 1549 matching lines @@
     return false;
   }
 
   @override
   int get hashCode {
     int hash = 0;
     hash = _JenkinsSmiHash.combine(hash, newName.hashCode);
     return _JenkinsSmiHash.finish(hash);
   }
 }