Nate Biggs
46bd9f351a
This was missed in the original implementation of the sync* transformer because prior to my recent change, ScopedIds couldn't end up within a DestructuredVariable. Change-Id: I2733ce1e01edb50659634347204bac1769269615 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/401080 Reviewed-by: Nicholas Shahan <nshahan@google.com> Commit-Queue: Nate Biggs <natebiggs@google.com>
32 lines
912 B
Dart
32 lines
912 B
Dart
// Copyright (c) 2024, 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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// Ensure optional parameters get renamed properly for sync* transformations.
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Iterable<num> range(num startOrStop, [num? stop, num? step]) sync* {
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final start = stop == null ? 0 : startOrStop;
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stop ??= startOrStop;
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step ??= 1;
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if (step == 0) throw ArgumentError('step cannot be 0');
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if (step > 0 && stop < start) {
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throw ArgumentError('if step is positive, stop must be greater than start');
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}
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if (step < 0 && stop > start) {
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throw ArgumentError('if step is negative, stop must be less than start');
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}
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for (
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num value = start;
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step < 0 ? value > stop : value < stop;
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value += step
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) {
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yield value;
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}
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}
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void main() {
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print(range(10, 20, 2));
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}
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