content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.itsaky.androidide.javac.services;
  
  import openjdk.tools.javac.util.Context;
  
  /**
   * @author Tomas Zezula
   */
  public class CancelService {
  
    /** The context key for the parameter name resolver. */
    protected static final Context.Key<CancelService> cancelServiceKey = new Context.Key<>();
  
    protected CancelService() {}
  
    public static CancelService instance(Context context) {
      CancelService instance = context.get(cancelServiceKey);
      if (instance == null) {
        instance = new CancelService();
        context.put(cancelServiceKey, instance);
      }
      return instance;
    }
  
    public static void preRegister(Context context, CancelService impl) {
      context.put(CancelService.cancelServiceKey, impl);
    }
  
    public final void abortIfCanceled() {
      if (isCanceled()) {
        throw new CancelAbort();
      }
    }
  
    public boolean isCanceled() {
      return false;
    }
  }
  