| // Copyright (c) 2017, 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 |
| /// Int32x4List.view( |
| /// ByteBuffer buffer, [ |
| /// int offsetInBytes = 0, |
| /// int length |
| /// ]) |
| /// ... |
| /// If the length is not specified, it defaults to null, which indicates that |
| /// the view extends to the end of the byte buffer. |
| /// @description Checks that if the length is not specified, it defaults to null, |
| /// which indicates that the view extends to the end of the byte buffer. |
| /// @author ngl@unipro.ru |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| Int32x4 i32x4(n) => new Int32x4(n, n, n, n); |
| |
| equal(o1, o2) => o1.x == o2.x && o1.y == o2.y && o1.z == o2.z && o1.w == o2.w; |
| |
| void check(list, offset) { |
| var l = new Int32x4List.fromList(list); |
| var buffer = l.buffer; |
| var view = new Int32x4List.view(buffer, offset); |
| Expect.isTrue(view is Int32x4List); |
| Expect.runtimeIsType<Int32x4List>(view); |
| Expect.equals(view.length, l.length - (offset >> 4)); |
| Expect.isTrue(equal(l[l.length - 1], view[view.length - 1])); |
| } |
| |
| main() { |
| var list = [ |
| i32x4(0), i32x4(1), i32x4(2), i32x4(3), i32x4(4), i32x4(5), i32x4(6), |
| i32x4(7),i32x4(8), i32x4(9) |
| ]; |
| check([i32x4(1)], 0); |
| check(list, 0); |
| check(list, 2 * Int32x4List.bytesPerElement); |
| check(list, 3 * Int32x4List.bytesPerElement); |
| } |