// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// Dart core library.

/**
 * The Options object allows accessing the arguments which have been passed to
 * the current isolate.
 */
abstract class Options {
  /**
   * A newly constructed Options object contains the arguments exactly as they
   * have been passed to the isolate.
   */
  factory Options() => new RuntimeOptions();

  /**
   * Returns a list of arguments that have been passed to this isolate. Any
   * modifications to the list will be contained to the options object owning
   * this list.
   *
   * If the execution environment does not support [arguments] an empty list
   * is returned.
   */
  List<String> get arguments;

  /**
   * Returns the path of the executable used to run the script in this
   * isolate.
   *
   * If the execution environment does not support [executable] an empty
   * string is returned.
   */
  String get executable;

  /**
   * Returns the path of the script being run in this isolate.
   *
   * If the executable environment does not support [script] an empty
   * string is returned.
   */
  String get script;
}