| /* |
| * 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 Pointer<T> elementAt(int index) |
| * Pointer arithmetic (takes element size into account). |
| * This method must be invoked with a compile-time constant T. |
| * Does not accept dynamic invocations -- where the type of the receiver is |
| * dynamic. |
| * |
| * @description Checks that this method implements pointer arithmetic |
| * @author sgrekhov@unipro.ru |
| */ |
| import "dart:ffi"; |
| import "package:ffi/ffi.dart"; |
| import '../../../Utils/expect.dart'; |
| |
| class MyStruct extends Struct { |
| @Int8() |
| external int x; |
| @Float() |
| external double y; |
| } |
| |
| void main() { |
| Pointer<MyStruct> p1 = calloc<MyStruct>(2); |
| try { |
| Expect.isTrue(p1.elementAt(1).address - p1.elementAt(0).address > 0); |
| } finally { |
| calloc.free(p1); |
| } |
| } |