Initial factory constructors for generated objects in Java server.

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

Index: editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/Position.java
diff --git a/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/Position.java b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/Position.java
index 412fd28d018d4dd1435968e85d4ff709584f6304..054b0835529ff733ce95fa44e818a23fb93c6c3f 100644
--- a/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/Position.java
+++ b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/Position.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 Position {
 
-  /**
-   * An empty array of {@link Position}s.
-   */
   public static final Position[] EMPTY_ARRAY = new Position[0];
 
+  public static final List<Position> EMPTY_LIST = Lists.newArrayList();
+
   /**
    * The file containing the position.
    */
@@ -67,6 +71,24 @@ public class Position {
     return false;
   }
 
+  public static Position fromJson(JsonObject jsonObject) {
+    String file = jsonObject.get("file").getAsString();
+    Integer offset = jsonObject.get("offset").getAsInt();
+    return new Position(file, offset);
+  }
+
+  public static List<Position> fromJsonArray(JsonArray jsonArray) {
+    if (jsonArray == null) {
+      return EMPTY_LIST;
+    }
+    ArrayList<Position> list = new ArrayList<Position>(jsonArray.size());
+    Iterator<JsonElement> iterator = jsonArray.iterator();
+    while (iterator.hasNext()) {
+      list.add(fromJson(iterator.next().getAsJsonObject()));
+    }
+    return list;
+  }
+
   /**
    * The file containing the position.
    */