| /* |
| * Copyright 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.gwt.dev.util; |
| |
| import com.google.gwt.thirdparty.guava.common.collect.Interner; |
| import com.google.gwt.thirdparty.guava.common.collect.Interners; |
| |
| /** |
| * A utility class for reducing String memory waste. Note that this does not use |
| * the String.intern() method which would prevent GC and fill the PermGen space. |
| * Instead, we use a Google Collections WeakInterner. |
| */ |
| public class StringInterner { |
| private static final StringInterner instance = new StringInterner(); |
| |
| public static StringInterner get() { |
| return instance; |
| } |
| |
| private final Interner<String> stringPool = Interners.newWeakInterner(); |
| |
| protected StringInterner() { |
| } |
| |
| public String intern(String s) { |
| return stringPool.intern(s); |
| } |
| |
| } |