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>
83 lines
2.6 KiB
Dart
83 lines
2.6 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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typedef CoordinateTrice = Coordinate Function(
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ffi.Pointer<ffi.NativeFunction<NativeCoordinateOp>>, Coordinate);
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typedef BinaryOp = int Function(int, int);
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typedef NativeIntptrBinOp = ffi.IntPtr Function(ffi.IntPtr, ffi.IntPtr);
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typedef NativeIntptrBinOpLookup
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= ffi.Pointer<ffi.NativeFunction<NativeIntptrBinOp>> Function();
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typedef NativeApplyTo42And74Type = ffi.IntPtr Function(
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ffi.Pointer<ffi.NativeFunction<NativeIntptrBinOp>>);
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typedef ApplyTo42And74Type = int Function(
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ffi.Pointer<ffi.NativeFunction<NativeIntptrBinOp>>);
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int myPlus(int a, int b) {
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print("myPlus");
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print(a);
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print(b);
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return a + b;
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}
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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 c pointer to a c function as an argument to a c function
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ffi.Pointer<ffi.NativeFunction<NativeCoordinateOp>>
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transposeCoordinatePointer =
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ffiTestFunctions.lookup("TransposeCoordinate");
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ffi.Pointer<ffi.NativeFunction<CoordinateTrice>> p2 =
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ffiTestFunctions.lookup("CoordinateUnOpTrice");
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CoordinateTrice coordinateUnOpTrice = p2.asFunction();
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Coordinate c1 = Coordinate(10.0, 20.0, null);
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c1.next = c1;
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Coordinate result = coordinateUnOpTrice(transposeCoordinatePointer, c1);
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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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// return a c pointer to a c function from a c function
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ffi.Pointer<ffi.NativeFunction<NativeIntptrBinOpLookup>> p14 =
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ffiTestFunctions.lookup("IntptrAdditionClosure");
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NativeIntptrBinOpLookup intptrAdditionClosure = p14.asFunction();
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ffi.Pointer<ffi.NativeFunction<NativeIntptrBinOp>> intptrAdditionPointer =
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intptrAdditionClosure();
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BinaryOp intptrAddition = intptrAdditionPointer.asFunction();
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print(intptrAddition(10, 27));
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}
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{
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ffi.Pointer<ffi.NativeFunction<NativeIntptrBinOp>> pointer =
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ffi.fromFunction(myPlus);
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print(pointer);
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ffi.Pointer<ffi.NativeFunction<NativeApplyTo42And74Type>> p17 =
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ffiTestFunctions.lookup("ApplyTo42And74");
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ApplyTo42And74Type applyTo42And74 = p17.asFunction();
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// int result = applyTo42And74(pointer);
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// print(result);
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}
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print("end main");
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}
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