Konstantin Shcheglov
9f986d2501
Change-Id: Iffe4370431587e46a141ddc72a86ceec29c163b2 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/176486 Commit-Queue: Konstantin Shcheglov <scheglov@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Samuel Rawlins <srawlins@google.com>
31 lines
1.3 KiB
Dart
31 lines
1.3 KiB
Dart
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/// An object used to provide access to the values of variables that have been
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/// defined on the command line using the `-D` option.
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///
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/// Clients may not extend, implement or mix-in this class.
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class DeclaredVariables {
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/// A table mapping the names of declared variables to their values.
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final Map<String, String> _declaredVariables = <String, String>{};
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/// Initialize a newly created set of declared variables in which there are no
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/// variables.
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DeclaredVariables();
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/// Initialize a newly created set of declared variables to define variables
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/// whose names are the keys in the give [variableMap] and whose values are
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/// the corresponding values from the map.
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DeclaredVariables.fromMap(Map<String, String> variableMap) {
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_declaredVariables.addAll(variableMap);
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}
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/// Return the names of the variables for which a value has been defined.
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Iterable<String> get variableNames => _declaredVariables.keys;
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/// Return the raw string value of the variable with the given [name],
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/// or `null` if the variable is not defined.
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String? get(String name) => _declaredVariables[name];
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}
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