Added a new JsonSyntaxException to indicate syntax errors in Gson.

gson/src/main/java/com/google/gson/JsonSyntaxException.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+ *
+ * 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.gson;
+
+/**
+ * This exception is raised when Gson was unable to read an input stream
+ * or write to one.
+ * 
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public final class JsonSyntaxException extends JsonParseException {
+
+  public JsonSyntaxException(String msg) {
+    super(msg);
+  }
+
+  public JsonSyntaxException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
+
+  /**
+   * Creates exception with the specified cause. Consider using
+   * {@link #JsonIOException(String, Throwable)} instead if you can describe what happened.
+   *
+   * @param cause root exception that caused this exception to be thrown.
+   */
+  public JsonSyntaxException(Throwable cause) {
+    super(cause);
+  }
+}