| // 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. |
| // |
| // SharedObjects=ffi_test_functions |
| |
| // @dart = 2.9 |
| |
| import 'dart:ffi'; |
| |
| import 'dylib_utils.dart'; |
| |
| // ============================================ |
| // Tests checks on Dart to native (asFunction). |
| // ============================================ |
| |
| typedef Int64PointerParamOpDart = void Function(Pointer<Int64>); |
| typedef Int64PointerParamOp = Void Function(Pointer<Int64>); |
| typedef Int64PointerReturnOp = Pointer<Int64> Function(); |
| typedef NaTyPointerReturnOp = Pointer<NativeType> Function(); |
| |
| final paramOpName = "NativeTypePointerParam"; |
| final returnOpName = "NativeTypePointerReturn"; |
| |
| final DynamicLibrary ffiTestFunctions = |
| dlopenPlatformSpecific("ffi_test_functions"); |
| |
| final p1 = |
| ffiTestFunctions.lookup<NativeFunction<Int64PointerParamOp>>(paramOpName); |
| final nonInvariantBinding1 = //# 1: compile-time error |
| p1.asFunction<NaTyPointerParamOpDart>(); //# 1: continued |
| |
| final p2 = |
| ffiTestFunctions.lookup<NativeFunction<NaTyPointerReturnOp>>(returnOpName); |
| final nonInvariantBinding2 = //# 2: compile-time error |
| p2.asFunction<Int64PointerReturnOp>(); //# 2: continued |
| |
| final p3 = Pointer< |
| NativeFunction< |
| Pointer<NativeFunction<Pointer<NativeType> Function()>> |
| Function()>>.fromAddress(0x1234); |
| final f3 = p3 //# 10: compile-time error |
| .asFunction< //# 10: continued |
| Pointer< //# 10: continued |
| NativeFunction< //# 10: continued |
| Pointer<Int8> Function()>> //# 10: continued |
| Function()>(); //# 10: continued |
| |
| // =========================================================== |
| // Test check on callbacks from native to Dart (fromFunction). |
| // =========================================================== |
| |
| void naTyPointerParamOp(Pointer<NativeType> p) { |
| final Pointer<Int8> asInt8 = p.cast(); |
| asInt8.value = 42; |
| } |
| |
| Pointer<Int64> int64PointerReturnOp() { |
| return Pointer.fromAddress(0x13370000); |
| } |
| |
| final implicitDowncast1 = //# 3: compile-time error |
| Pointer.fromFunction<Int64PointerParamOp>(//# 3: continued |
| naTyPointerParamOp); //# 3: continued |
| final implicitDowncast2 = //# 4: compile-time error |
| Pointer.fromFunction<NaTyPointerReturnOp>(//# 4: continued |
| int64PointerReturnOp); //# 4: continued |
| |
| void main() {} |
