Daco Harkes
3abc7d34d7
Change-Id: Id69e17563c4d64f6ead5e143077a7364520f65a0 Reviewed-on: https://dart-review.googlesource.com/c/93173 Auto-Submit: Daco Harkes <dacoharkes@google.com> Reviewed-by: Samir Jindel <sjindel@google.com> Commit-Queue: Samir Jindel <sjindel@google.com>
67 lines
1.6 KiB
Dart
67 lines
1.6 KiB
Dart
// Copyright (c) 2019, 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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import 'dart:ffi' as ffi;
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import 'dylib_utils.dart';
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import 'coordinate.dart';
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typedef NativeCoordinateOp = Coordinate Function(Coordinate);
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main(List<String> arguments) {
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print('start main');
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ffi.DynamicLibrary ffiTestFunctions =
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dlopenPlatformSpecific("ffi_test_functions");
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{
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// pass a struct to a c function and get a struct as return value
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ffi.Pointer<ffi.NativeFunction<NativeCoordinateOp>> p1 =
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ffiTestFunctions.lookup("TransposeCoordinate");
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NativeCoordinateOp f1 = p1.asFunction();
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Coordinate c1 = Coordinate(10.0, 20.0, null);
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Coordinate c2 = Coordinate(42.0, 84.0, c1);
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c1.next = c2;
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Coordinate result = f1(c1);
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print(c1.x);
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print(c1.y);
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print(result.runtimeType);
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print(result.x);
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print(result.y);
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}
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{
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// pass an array of structs to a c funtion
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ffi.Pointer<ffi.NativeFunction<NativeCoordinateOp>> p1 =
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ffiTestFunctions.lookup("CoordinateElemAt1");
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NativeCoordinateOp f1 = p1.asFunction();
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Coordinate c1 = Coordinate.allocate(count: 3);
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Coordinate c2 = c1.elementAt(1);
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Coordinate c3 = c1.elementAt(2);
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c1.x = 10.0;
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c1.y = 10.0;
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c1.next = c3;
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c2.x = 20.0;
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c2.y = 20.0;
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c2.next = c1;
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c3.x = 30.0;
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c3.y = 30.0;
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c3.next = c2;
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Coordinate result = f1(c1);
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print(result.x);
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print(result.y);
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}
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print("end main");
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}
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