gitiles-servlet/src/main/java/com/google/gitiles/ThreadSafePrettifyParser.java

// Copyright 2015 Google Inc. All Rights Reserved.
//
// 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.gitiles;

import java.util.Collections;

import prettify.PrettifyParser;
import prettify.parser.Prettify;

public class ThreadSafePrettifyParser extends PrettifyParser {
  public static final ThreadSafePrettifyParser INSTANCE = new ThreadSafePrettifyParser();

  private ThreadSafePrettifyParser() {
    // Prettify is not thread safe ... unless we do this.
    prettify =
        new Prettify() {
          {
            langHandlerRegistry = Collections.synchronizedMap(langHandlerRegistry);
          }
        };
  }
}