Initial factory constructors for generated objects in Java server.

editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java

Index: editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java
diff --git a/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java
index f5e939a353f1c9d279a2cc66cd9a7faa1ac3dfdd..839767970287003ce1c6748f3e0c17fb45d49128 100644
--- a/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java
+++ b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java
@@ -19,10 +19,15 @@ package com.google.dart.server.generated.types;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
+import com.google.common.collect.Lists;
+import com.google.dart.server.utilities.general.JsonUtilities;
 import com.google.dart.server.utilities.general.ObjectUtilities;
 import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonPrimitive;
+import java.util.ArrayList;
+import java.util.Iterator;
 import org.apache.commons.lang3.StringUtils;
 
 /**
@@ -33,11 +38,10 @@ import org.apache.commons.lang3.StringUtils;
 @SuppressWarnings("unused")
 public class TypeHierarchyItem {
 
-  /**
-   * An empty array of {@link TypeHierarchyItem}s.
-   */
   public static final TypeHierarchyItem[] EMPTY_ARRAY = new TypeHierarchyItem[0];
 
+  public static final List<TypeHierarchyItem> EMPTY_LIST = Lists.newArrayList();
+
   /**
    * The class element represented by this item.
    */
@@ -110,6 +114,29 @@ public class TypeHierarchyItem {
     return false;
   }
 
+  public static TypeHierarchyItem fromJson(JsonObject jsonObject) {
+    Element classElement = Element.fromJson(jsonObject.get("classElement").getAsJsonObject());
+    String displayName = jsonObject.get("displayName") == null ? null : jsonObject.get("displayName").getAsString();
+    Element memberElement = jsonObject.get("memberElement") == null ? null : Element.fromJson(jsonObject.get("memberElement").getAsJsonObject());
+    Integer superclass = jsonObject.get("superclass") == null ? null : jsonObject.get("superclass").getAsInt();
+    Integer[] interfaces = JsonUtilities.decodeIntegerArray(jsonObject.get("interfaces").getAsJsonArray());
+    Integer[] mixins = JsonUtilities.decodeIntegerArray(jsonObject.get("mixins").getAsJsonArray());
+    Integer[] subclasses = JsonUtilities.decodeIntegerArray(jsonObject.get("subclasses").getAsJsonArray());
+    return new TypeHierarchyItem(classElement, displayName, memberElement, superclass, interfaces, mixins, subclasses);
+  }
+
+  public static List<TypeHierarchyItem> fromJsonArray(JsonArray jsonArray) {
+    if (jsonArray == null) {
+      return EMPTY_LIST;
+    }
+    ArrayList<TypeHierarchyItem> list = new ArrayList<TypeHierarchyItem>(jsonArray.size());
+    Iterator<JsonElement> iterator = jsonArray.iterator();
+    while (iterator.hasNext()) {
+      list.add(fromJson(iterator.next().getAsJsonObject()));
+    }
+    return list;
+  }
+
   /**
    * The class element represented by this item.
    */