Pull args, intl, logging, shelf, and source_maps out of the SDK.

pkg/args/lib/src/arg_results.dart

-// Copyright (c) 2014, 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.
-
-library args.src.arg_results;
-
-import 'package:collection/wrappers.dart';
-
-import 'arg_parser.dart';
-
-/// Creates a new [ArgResults].
-///
-/// Since [ArgResults] doesn't have a public constructor, this lets [Parser]
-/// get to it. This function isn't exported to the public API of the package.
-ArgResults newArgResults(ArgParser parser, Map<String, dynamic> parsed,
-      String name, ArgResults command, List<String> rest,
-      List<String> arguments) {
-  return new ArgResults._(parser, parsed, name, command, rest, arguments);
-}
-
-/// The results of parsing a series of command line arguments using
-/// [ArgParser.parse()].
-///
-/// Includes the parsed options and any remaining unparsed command line
-/// arguments.
-class ArgResults {
-  /// The [ArgParser] whose options were parsed for these results.
-  final ArgParser _parser;
-
-  /// The option values that were parsed from arguments.
-  final Map<String, dynamic> _parsed;
-
-  /// If these are the results for parsing a command's options, this will be the
-  /// name of the command. For top-level results, this returns `null`.
-  final String name;
-
-  /// The command that was selected, or `null` if none was.
-  ///
-  /// This will contain the options that were selected for that command.
-  final ArgResults command;
-
-  /// The remaining command-line arguments that were not parsed as options or
-  /// flags.
-  ///
-  /// If `--` was used to separate the options from the remaining arguments,
-  /// it will not be included in this list unless parsing stopped before the
-  /// `--` was reached.
-  final List<String> rest;
-
-  /// The original list of arguments that were parsed.
-  final List<String> arguments;
-
-  /// Creates a new [ArgResults].
-  ArgResults._(this._parser, this._parsed, this.name, this.command,
-      List<String> rest, List<String> arguments)
-      : this.rest = new UnmodifiableListView(rest),
-        this.arguments = new UnmodifiableListView(arguments);
-
-  /// Gets the parsed command-line option named [name].
-  operator [](String name) {
-    if (!_parser.options.containsKey(name)) {
-      throw new ArgumentError('Could not find an option named "$name".');
-    }
-
-    return _parser.options[name].getOrDefault(_parsed[name]);
-  }
-
-  /// Get the names of the available options as an [Iterable].
-  ///
-  /// This includes the options whose values were parsed or that have defaults.
-  /// Options that weren't present and have no default will be omitted.
-  Iterable<String> get options {
-    var result = new Set.from(_parsed.keys);
-
-    // Include the options that have defaults.
-    _parser.options.forEach((name, option) {
-      if (option.defaultValue != null) result.add(name);
-    });
-
-    return result;
-  }
-
-  /// Returns `true` if the option with [name] was parsed from an actual
-  /// argument.
-  ///
-  /// Returns `false` if it wasn't provided and the default value or no default
-  /// value would be used instead.
-  bool wasParsed(String name) {
-    var option = _parser.options[name];
-    if (option == null) {
-      throw new ArgumentError('Could not find an option named "$name".');
-    }
-
-    return _parsed.containsKey(name);
-  }
-}