| // 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 All field declarations in a Struct subclass declaration must |
| /// either have type int or double and be annotated with a NativeType |
| /// representing the native type, or must be of type Pointer or subtype of |
| /// Struct or Union. |
| /// |
| /// @description Checks that 'Struct' subtype value depends on annotation |
| /// @author sgrekhov@unipro.ru |
| |
| import "dart:ffi"; |
| import "package:ffi/ffi.dart"; |
| import "../../../Utils/expect.dart"; |
| |
| class S1 extends Struct { |
| @Double() |
| external double x; |
| } |
| |
| class S2 extends Struct { |
| @Float() |
| external double x; |
| } |
| |
| void main() { |
| Pointer<S1> s1 = calloc<S1>(); |
| try { |
| s1.ref.x = 3.14; |
| Pointer<S2> s2 = new Pointer.fromAddress(s1.address); |
| Expect.notEquals(3.14, s2.ref.x); |
| |
| s2.ref.x = 3.14; |
| Expect.notEquals(3.14, s1.ref.x); |
| } finally { |
| calloc.free(s1); |
| } |
| } |