blob: 7a8370e1c266b3d675cb779831a450e0b6e8b361 [file] [log] [blame]
// Copyright (c) 2019, 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.
// @dart = 2.9
import 'dart:ffi';
import 'package:ffi/ffi.dart';
import 'coordinate.dart';
import 'dylib_utils.dart';
typedef NativeCoordinateOp = Pointer<Coordinate> Function(Pointer<Coordinate>);
main() {
print('start main');
DynamicLibrary ffiTestFunctions =
dlopenPlatformSpecific("ffi_test_functions");
{
// Pass a struct to a c function and get a struct as return value.
Pointer<NativeFunction<NativeCoordinateOp>> p1 =
ffiTestFunctions.lookup("TransposeCoordinate");
NativeCoordinateOp f1 = p1.asFunction();
final c1 = calloc<Coordinate>()
..ref.x = 10.0
..ref.y = 20.0;
final c2 = calloc<Coordinate>()
..ref.x = 42.0
..ref.y = 84.0
..ref.next = c1;
c1.ref.next = c2;
Coordinate result = f1(c1).ref;
print(c1.ref.x);
print(c1.ref.y);
print(result.runtimeType);
print(result.x);
print(result.y);
}
{
// Pass an array of structs to a c funtion.
Pointer<NativeFunction<NativeCoordinateOp>> p1 =
ffiTestFunctions.lookup("CoordinateElemAt1");
NativeCoordinateOp f1 = p1.asFunction();
Pointer<Coordinate> c1 = calloc<Coordinate>(3);
Pointer<Coordinate> c2 = c1.elementAt(1);
Pointer<Coordinate> c3 = c1.elementAt(2);
c1.ref.x = 10.0;
c1.ref.y = 10.0;
c1.ref.next = c3;
c2.ref.x = 20.0;
c2.ref.y = 20.0;
c2.ref.next = c1;
c3.ref.x = 30.0;
c3.ref.y = 30.0;
c3.ref.next = c2;
Coordinate result = f1(c1).ref;
print(result.x);
print(result.y);
}
print("end main");
}