streamline rebased Gson into source; rebase was done to prevent conflict with other plugins (like upcoming WorldGuard release) which also use Gson; Bukkit doesn't yet handle such conflicts properly

src/com/bukkit/mcteam/gson/InnerClassExclusionStrategy.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2008 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.bukkit.mcteam.gson;
+
+import java.lang.reflect.Modifier;
+
+/**
+ * Strategy for excluding inner classes.
+ *
+ * @author Joel Leitch
+ */
+class InnerClassExclusionStrategy implements ExclusionStrategy {
+
+  public boolean shouldSkipField(FieldAttributes f) {
+    return isInnerClass(f.getDeclaredClass());
+  }
+
+  public boolean shouldSkipClass(Class<?> clazz) {
+    return isInnerClass(clazz);
+  }
+
+  private boolean isInnerClass(Class<?> clazz) {
+    return clazz.isMemberClass() && !isStatic(clazz);
+  }
+
+  private boolean isStatic(Class<?> clazz) {
+    return (clazz.getModifiers() & Modifier.STATIC) != 0;
+  }
+}