Leaf Petersen
745f112ef6
Opt an initial batch of files under samples, samples-dev, utils, and runtime/tools/dartfuzz out of null safety in preparation for switching the flag on by default. Change-Id: Icdfd52a5a969e678a7205903332f73fe3841c223 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/166960 Reviewed-by: Daco Harkes <dacoharkes@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
70 lines
1.7 KiB
Dart
70 lines
1.7 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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// @dart = 2.9
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import 'dart:ffi';
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import 'coordinate.dart';
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import 'dylib_utils.dart';
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import 'package:ffi/ffi.dart';
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typedef NativeCoordinateOp = Pointer<Coordinate> Function(Pointer<Coordinate>);
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main() {
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print('start main');
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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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Pointer<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.allocate(10.0, 20.0, nullptr);
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Coordinate c2 = Coordinate.allocate(42.0, 84.0, c1.addressOf);
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c1.next = c2.addressOf;
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Coordinate result = f1(c1.addressOf).ref;
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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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Pointer<NativeFunction<NativeCoordinateOp>> p1 =
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ffiTestFunctions.lookup("CoordinateElemAt1");
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NativeCoordinateOp f1 = p1.asFunction();
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Pointer<Coordinate> c1 = allocate<Coordinate>(count: 3);
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Pointer<Coordinate> c2 = c1.elementAt(1);
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Pointer<Coordinate> c3 = c1.elementAt(2);
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c1.ref.x = 10.0;
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c1.ref.y = 10.0;
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c1.ref.next = c3;
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c2.ref.x = 20.0;
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c2.ref.y = 20.0;
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c2.ref.next = c1;
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c3.ref.x = 30.0;
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c3.ref.y = 30.0;
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c3.ref.next = c2;
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Coordinate result = f1(c1).ref;
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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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