| /* |
| * Copyright (c) 2021, 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. |
| */ |
| /** |
| * @assertion Annotation to specify on Struct subtypes to indicate that its |
| * members need to be packed. |
| * |
| * Valid values for memberAlignment are 1, 2, 4, 8, and 16. |
| * |
| * @description Checks that valid values for memberAlignment are accepted |
| * @author sgrekhov@unipro.ru |
| */ |
| import "dart:ffi"; |
| import "../../../Utils/expect.dart"; |
| |
| @Packed(1) |
| class S1 extends Struct { |
| @Double() |
| external double x; |
| @Int32() |
| external int y; |
| } |
| |
| @Packed(2) |
| class S2 extends Struct { |
| @Double() |
| external double x; |
| @Int32() |
| external int y; |
| } |
| |
| @Packed(4) |
| class S4 extends Struct { |
| @Double() |
| external double x; |
| @Int32() |
| external int y; |
| } |
| |
| @Packed(8) |
| class S8 extends Struct { |
| @Double() |
| external double x; |
| @Int32() |
| external int y; |
| } |
| |
| @Packed(16) |
| class S16 extends Struct { |
| @Double() |
| external double x; |
| @Int32() |
| external int y; |
| } |
| |
| void main() { |
| Expect.equals(12, sizeOf<S1>()); |
| Expect.equals(12, sizeOf<S2>()); |
| Expect.equals(12, sizeOf<S4>()); |
| Expect.isTrue(sizeOf<S8>() >= 12); |
| Expect.isTrue(sizeOf<S16>() >= 12); |
| } |