From b0f50bb4bed8ab52a4dc674d042e7c1518eb885f Mon Sep 17 00:00:00 2001
From: Joel Leitch <joel.leitch@gmail.com>
Date: Wed, 23 Sep 2009 19:00:05 +0000
Subject: [PATCH] Return a "JsonNull" object for empty whitespace input into
 the JsonParser.

---
 gson/src/main/java/com/google/gson/JsonParser.java    |  2 +-
 .../src/test/java/com/google/gson/JsonParserTest.java | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/gson/src/main/java/com/google/gson/JsonParser.java b/gson/src/main/java/com/google/gson/JsonParser.java
index 4e706a9b..d8e5c16b 100755
--- a/gson/src/main/java/com/google/gson/JsonParser.java
+++ b/gson/src/main/java/com/google/gson/JsonParser.java
@@ -63,7 +63,7 @@ public final class JsonParser {
       throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
     } catch (JsonParseException e) {
       if (e.getCause() instanceof EOFException) {
-        return null;
+        return JsonNull.createJsonNull();
       } else {
         throw e;
       }
diff --git a/gson/src/test/java/com/google/gson/JsonParserTest.java b/gson/src/test/java/com/google/gson/JsonParserTest.java
index b4537520..a756c94f 100644
--- a/gson/src/test/java/com/google/gson/JsonParserTest.java
+++ b/gson/src/test/java/com/google/gson/JsonParserTest.java
@@ -46,6 +46,17 @@ public class JsonParserTest extends TestCase {
     assertEquals(10, e.getAsJsonObject().get("a").getAsInt());
     assertEquals("c", e.getAsJsonObject().get("b").getAsString());
   }
+  
+  public void testParseEmptyString() {
+    JsonElement e = parser.parse("\"   \"");
+    assertTrue(e.isJsonPrimitive());
+    assertEquals("   ", e.getAsString());
+  }
+
+  public void testParseEmptyWhitespaceInput() {
+    JsonElement e = parser.parse("     ");
+    assertTrue(e.isJsonNull());
+  }
 
   public void testParseReader() {
     StringReader reader = new StringReader("{a:10,b:'c'}");