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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.
//
// SharedObjects=ffi_test_functions
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 implictDowncast1 = //# 3: compile-time error
Pointer.fromFunction<Int64PointerParamOp>(//# 3: continued
naTyPointerParamOp); //# 3: continued
final implictDowncast2 = //# 4: compile-time error
Pointer.fromFunction<NaTyPointerReturnOp>(//# 4: continued
int64PointerReturnOp); //# 4: continued
void main() {}