/*
    * junixsocket
    *
    * Copyright 2009-2024 Christian Kohlschütter
    *
    * 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 org.newsclub.net.unix;
  
  import java.io.IOException;
  import java.net.DatagramSocketImpl;
  import java.net.SocketOption;
  import java.util.Set;
  
  /**
   * A shim that is filled with Java version-specific overrides. This variant is for Java 9 and above.
   *
   * @author Christian Kohlschütter
   */
  abstract class DatagramSocketImplShim extends DatagramSocketImpl {
    protected DatagramSocketImplShim() {
      super();
    }
  
    @Override
    protected <T> void setOption(SocketOption<T> name, T value) throws IOException {
      if (name instanceof AFSocketOption<?>) {
        ((AFDatagramSocketImpl<?>) this).getCore().setOption((AFSocketOption<T>) name, value);
        return;
      }
      Integer optionId = SocketOptionsMapper.resolve(name);
      if (optionId == null) {
        super.setOption(name, value);
      } else {
        setOption(optionId, value);
      }
    }
  
    @SuppressWarnings("unchecked")
    @Override
    protected <T> T getOption(SocketOption<T> name) throws IOException {
      if (name instanceof AFSocketOption<?>) {
        return ((AFDatagramSocketImpl<?>) this).getCore().getOption((AFSocketOption<T>) name);
      }
      Integer optionId = SocketOptionsMapper.resolve(name);
      if (optionId == null) {
        return super.getOption(name);
      } else {
        return (T) getOption(optionId);
      }
    }
  
    @Override
    protected Set<SocketOption<?>> supportedOptions() {
      return SocketOptionsMapper.SUPPORTED_SOCKET_OPTIONS;
    }
  }