Johnni Winther
dffa3191b9
This push the constant context for constant patterns such that the constness is propagated to subexpressions. Closes #50629 Change-Id: Idcb279765c5464ba17abb98b3f9eb852a7c87b96 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/277860 Reviewed-by: Chloe Stefantsova <cstefantsova@google.com> Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Johnni Winther <johnniwinther@google.com>
61 lines
1.4 KiB
Dart
61 lines
1.4 KiB
Dart
// Copyright (c) 2022, 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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class Const<T> {
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final T value;
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const Const(this.value);
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}
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main() {
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test(42, false);
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test([42], false);
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test(<num>[42], false);
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test({42: 'foo'}, false);
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test(<num, Object>{42: 'foo'}, false);
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test(Const(42), false);
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test(Const<num>(42), false);
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test(const [42], true);
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test(const <num>[42], true);
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test(const {42}, true);
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test(const <num>{42}, true);
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test(const {42: 'foo'}, true);
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test(const <num, Object>{42: 'foo'}, true);
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test(const Const(42), true);
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test(const Const<num>(42), true);
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}
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void test(dynamic value, bool expected) {
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bool matched = false;
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if (value case const [42]) {
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matched = true;
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}
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if (value case const <num>[42]) {
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matched = true;
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}
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if (value case const {42}) {
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matched = true;
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}
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if (value case const <num>{42}) {
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matched = true;
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}
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if (value case const {42: 'foo'}) {
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matched = true;
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}
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if (value case const <num, Object>{42: 'foo'}) {
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matched = true;
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}
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if (value case const Const(42)) {
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matched = true;
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}
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if (value case const Const<num>(42)) {
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matched = true;
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}
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if (matched != expected) {
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print('FAIL: $value ${matched ? "matched" : "didn't match"}');
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}
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}
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