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// 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.
import 'dart:ffi';
import 'package:ffi/ffi.dart';
import 'coordinate.dart';
import 'dylib_utils.dart';
typedef NativeCoordinateOp = Pointer<Coordinate> Function(Pointer<Coordinate>);
typedef CoordinateTrice = Pointer<Coordinate> Function(
Pointer<NativeFunction<NativeCoordinateOp>>, Pointer<Coordinate>);
typedef BinaryOp = int Function(int, int);
typedef NativeIntptrBinOp = IntPtr Function(IntPtr, IntPtr);
typedef NativeIntptrBinOpLookup = Pointer<NativeFunction<NativeIntptrBinOp>>
Function();
typedef NativeApplyTo42And74Type = IntPtr Function(
Pointer<NativeFunction<NativeIntptrBinOp>>);
typedef ApplyTo42And74Type = int Function(
Pointer<NativeFunction<NativeIntptrBinOp>>);
int myPlus(int a, int b) {
print("myPlus");
print(a);
print(b);
return a + b;
}
main() {
print('start main');
DynamicLibrary ffiTestFunctions =
dlopenPlatformSpecific("ffi_test_functions");
{
// Pass a c pointer to a c function as an argument to a c function.
Pointer<NativeFunction<NativeCoordinateOp>> transposeCoordinatePointer =
ffiTestFunctions.lookup("TransposeCoordinate");
Pointer<NativeFunction<CoordinateTrice>> p2 =
ffiTestFunctions.lookup("CoordinateUnOpTrice");
CoordinateTrice coordinateUnOpTrice = p2.asFunction();
final c1 = calloc<Coordinate>()
..ref.x = 10.0
..ref.y = 20.0;
c1.ref.next = c1;
Coordinate result = coordinateUnOpTrice(transposeCoordinatePointer, c1).ref;
print(result.runtimeType);
print(result.x);
print(result.y);
calloc.free(c1);
}
{
// Return a c pointer to a c function from a c function.
Pointer<NativeFunction<NativeIntptrBinOpLookup>> p14 =
ffiTestFunctions.lookup("IntptrAdditionClosure");
NativeIntptrBinOpLookup intptrAdditionClosure = p14.asFunction();
Pointer<NativeFunction<NativeIntptrBinOp>> intptrAdditionPointer =
intptrAdditionClosure();
BinaryOp intptrAddition = intptrAdditionPointer.asFunction();
print(intptrAddition(10, 27));
}
{
Pointer<NativeFunction<NativeIntptrBinOp>> pointer =
Pointer.fromFunction(myPlus, 0);
print(pointer);
Pointer<NativeFunction<NativeApplyTo42And74Type>> p17 =
ffiTestFunctions.lookup("ApplyTo42And74");
ApplyTo42And74Type applyTo42And74 = p17.asFunction();
int result = applyTo42And74(pointer);
print(result);
}
print("end main");
}