Add error codes to server protocol (#25958).

pkg/analysis_server/tool/spec/generated/java/types/AnalysisError.java

 /*
  * Copyright (c) 2015, the Dart project authors.
  *
  * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
  *
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Unless required by applicable law or agreed to in writing, software distributed under the License
  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
@@ skipping 54 matching lines @@
   private final String message;
 
   /**
    * The correction message to be displayed for this error. The correction message should indicate
    * how the user can fix the error. The field is omitted if there is no correction message
    * associated with the error code.
    */
   private final String correction;
 
   /**
+   * The name, as a string, of the error code associated with this error.
+   */
+  private final String code;
+
+  /**
    * A hint to indicate to interested clients that this error has an associated fix (or fixes). The
    * absence of this field implies there are not known to be fixes. Note that since the operation to
    * calculate whether fixes apply needs to be performant it is possible that complicated tests will
    * be skipped and a false negative returned. For this reason, this attribute should be treated as a
    * "hint". Despite the possibility of false negatives, no false positives should be returned. If a
    * client sees this flag set they can proceed with the confidence that there are in fact associated
    * fixes.
    */
   private final Boolean hasFix;
 
   /**
    * Constructor for {@link AnalysisError}.
    */
-  public AnalysisError(String severity, String type, Location location, String message, String correction, Boolean hasFix) {
+  public AnalysisError(String severity, String type, Location location, String message, String correction, String code, Boolean hasFix) {
     this.severity = severity;
     this.type = type;
     this.location = location;
     this.message = message;
     this.correction = correction;
+    this.code = code;
     this.hasFix = hasFix;
   }
 
   @Override
   public boolean equals(Object obj) {
     if (obj instanceof AnalysisError) {
       AnalysisError other = (AnalysisError) obj;
       return
         ObjectUtilities.equals(other.severity, severity) &&
         ObjectUtilities.equals(other.type, type) &&
         ObjectUtilities.equals(other.location, location) &&
         ObjectUtilities.equals(other.message, message) &&
         ObjectUtilities.equals(other.correction, correction) &&
+        ObjectUtilities.equals(other.code, code) &&
         ObjectUtilities.equals(other.hasFix, hasFix);
     }
     return false;
   }
 
   public static AnalysisError fromJson(JsonObject jsonObject) {
     String severity = jsonObject.get("severity").getAsString();
     String type = jsonObject.get("type").getAsString();
     Location location = Location.fromJson(jsonObject.get("location").getAsJsonObject());
     String message = jsonObject.get("message").getAsString();
     String correction = jsonObject.get("correction") == null ? null : jsonObject.get("correction").getAsString();
+    String code = jsonObject.get("code").getAsString();
     Boolean hasFix = jsonObject.get("hasFix") == null ? null : jsonObject.get("hasFix").getAsBoolean();
-    return new AnalysisError(severity, type, location, message, correction, hasFix);
+    return new AnalysisError(severity, type, location, message, correction, code, hasFix);
   }
 
   public static List<AnalysisError> fromJsonArray(JsonArray jsonArray) {
     if (jsonArray == null) {
       return EMPTY_LIST;
     }
     ArrayList<AnalysisError> list = new ArrayList<AnalysisError>(jsonArray.size());
     Iterator<JsonElement> iterator = jsonArray.iterator();
     while (iterator.hasNext()) {
       list.add(fromJson(iterator.next().getAsJsonObject()));
     }
     return list;
   }
 
   /**
+   * The name, as a string, of the error code associated with this error.
+   */
+  public String getCode() {
+    return code;
+  }
+
+  /**
    * The correction message to be displayed for this error. The correction message should indicate
    * how the user can fix the error. The field is omitted if there is no correction message
    * associated with the error code.
    */
   public String getCorrection() {
     return correction;
   }
 
   /**
    * A hint to indicate to interested clients that this error has an associated fix (or fixes). The
@@ skipping 38 matching lines @@
   }
 
   @Override
   public int hashCode() {
     HashCodeBuilder builder = new HashCodeBuilder();
     builder.append(severity);
     builder.append(type);
     builder.append(location);
     builder.append(message);
     builder.append(correction);
+    builder.append(code);
     builder.append(hasFix);
     return builder.toHashCode();
   }
 
   public JsonObject toJson() {
     JsonObject jsonObject = new JsonObject();
     jsonObject.addProperty("severity", severity);
     jsonObject.addProperty("type", type);
     jsonObject.add("location", location.toJson());
     jsonObject.addProperty("message", message);
     if (correction != null) {
       jsonObject.addProperty("correction", correction);
     }
+    jsonObject.addProperty("code", code);
     if (hasFix != null) {
       jsonObject.addProperty("hasFix", hasFix);
     }
     return jsonObject;
   }
 
   @Override
   public String toString() {
     StringBuilder builder = new StringBuilder();
     builder.append("[");
     builder.append("severity=");
     builder.append(severity + ", ");
     builder.append("type=");
     builder.append(type + ", ");
     builder.append("location=");
     builder.append(location + ", ");
     builder.append("message=");
     builder.append(message + ", ");
     builder.append("correction=");
     builder.append(correction + ", ");
+    builder.append("code=");
+    builder.append(code + ", ");
     builder.append("hasFix=");
     builder.append(hasFix);
     builder.append("]");
     return builder.toString();
   }
 
 }