Initial factory constructors for generated objects in Java server.

editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/utilities/general/JsonUtilities.java

Index: editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/utilities/general/JsonUtilities.java
diff --git a/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/utilities/general/JsonUtilities.java b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/utilities/general/JsonUtilities.java
new file mode 100644
index 0000000000000000000000000000000000000000..46cc7d0936fad0d688d3c0dbb1dcded1f2804b6a
--- /dev/null
+++ b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/utilities/general/JsonUtilities.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2014, 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
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.dart.server.utilities.general;
+
+import com.google.common.collect.Lists;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * The class {@code JsonUtilities} defines some general utility methods that are useful with the
+ * {@link JsonElement}s.
+ * 
+ * @coverage dart.server.utilities
+ */
+public class JsonUtilities {
+
+  public static Boolean[] decodeBooleanArray(JsonArray jsonArray) {
+    if (jsonArray == null) {
+      return new Boolean[0];
+    }
+    int i = 0;
+    Boolean[] booleanArray = new Boolean[jsonArray.size()];
+    Iterator<JsonElement> iterator = jsonArray.iterator();
+    while (iterator.hasNext()) {
+      booleanArray[i] = iterator.next().getAsBoolean();
+      i++;
+    }
+    return booleanArray;
+  }
+
+  public static Integer[] decodeIntegerArray(JsonArray jsonArray) {
+    if (jsonArray == null) {
+      return new Integer[0];
+    }
+    int i = 0;
+    Integer[] intArray = new Integer[jsonArray.size()];
+    Iterator<JsonElement> iterator = jsonArray.iterator();
+    while (iterator.hasNext()) {
+      intArray[i] = iterator.next().getAsInt();
+      i++;
+    }
+    return intArray;
+  }
+
+  public static List<String> decodeStringList(JsonArray jsonArray) {
+    if (jsonArray == null) {
+      return Lists.newArrayList();
+    }
+    List<String> stringList = new ArrayList<String>(jsonArray.size());
+    Iterator<JsonElement> iterator = jsonArray.iterator();
+    while (iterator.hasNext()) {
+      stringList.add(iterator.next().getAsString());
+    }
+    return stringList;
+  }
+
+}