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// Copyright (c) 2020, 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 'package:expect/expect.dart';
import 'dylib_utils.dart';
void main() {
doDynamicLinking();
testHandle();
testNativeAPIs();
}
void doDynamicLinking() {
Expect.isTrue(NativeApi.majorVersion == 2);
Expect.isTrue(NativeApi.minorVersion >= 2);
final initializeApi = testLibrary.lookupFunction<
IntPtr Function(Pointer<Void>),
int Function(Pointer<Void>)
>("InitDartApiDL");
Expect.isTrue(initializeApi(NativeApi.initializeApiDLData) == 0);
}
void testHandle() {
final s = SomeClass(123);
print("passObjectToC($s)");
final result = passObjectToC(s);
print("result = $result");
Expect.isTrue(identical(s, result));
}
void testNativeAPIs() {
// No need to expect here, `lookupFunction` throws an argument error if lookup fails.
Expect.isTrue(testLibrary.providesSymbol("Dart_IsNull_DL"));
testLibrary.lookupFunction<Bool Function(Handle), bool Function(Object)>(
"Dart_IsNull_DL",
);
Expect.isTrue(NativeApi.majorVersion == 2);
Expect.isTrue(NativeApi.minorVersion >= 4);
Expect.isTrue(testLibrary.providesSymbol("Dart_Null_DL"));
testLibrary.lookupFunction<Handle Function(), Object Function()>(
"Dart_Null_DL",
);
}
class SomeClass {
// We use this getter in the native api, don't tree shake it.
@pragma("vm:entry-point")
final int a;
SomeClass(this.a);
}
final testLibrary = dlopenPlatformSpecific("ffi_test_functions");
final passObjectToC = testLibrary
.lookupFunction<Handle Function(Handle), Object Function(Object)>(
"PassObjectToCUseDynamicLinking",
);