| // 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 |
| |
| // @dart = 2.9 |
| |
| import 'dart:ffi'; |
| |
| import 'package:expect/expect.dart'; |
| |
| import 'dylib_utils.dart'; |
| |
| void main() { |
| testHandle(); |
| testReadField(); |
| testTrueHandle(); |
| testClosureCallback(); |
| testReturnHandleInCallback(); |
| testPropagateError(); |
| testCallbackReturnException(); |
| testDeepException(); |
| testDeepException2(); |
| testNull(); |
| testDeepRecursive(); |
| testNoHandlePropagateError(); |
| } |
| |
| void testHandle() { |
| print("testHandle"); |
| final s = SomeClass(123); |
| print("passObjectToC($s)"); |
| final result = passObjectToC(s); |
| print("result = $result"); |
| Expect.isTrue(identical(s, result)); |
| } |
| |
| void testReadField() { |
| final s = SomeClass(123); |
| final result = handleReadFieldValue(s); |
| Expect.equals(s.a, result); |
| } |
| |
| void testTrueHandle() { |
| final result = trueHandle(); |
| Expect.isTrue(result); |
| } |
| |
| int globalCounter = 0; |
| |
| void increaseCounter() { |
| print("increaseCounter"); |
| globalCounter++; |
| } |
| |
| void doClosureCallback(Object callback) { |
| print("doClosureCallback"); |
| print(callback.runtimeType); |
| print(callback); |
| final callback_as_function = callback as void Function(); |
| callback_as_function(); |
| } |
| |
| final closureCallbackPointer = |
| Pointer.fromFunction<Void Function(Handle)>(doClosureCallback); |
| |
| void testClosureCallback() { |
| print("testClosureCallback $closureCallbackPointer"); |
| Expect.equals(0, globalCounter); |
| closureCallbackThroughHandle(closureCallbackPointer, increaseCounter); |
| Expect.equals(1, globalCounter); |
| closureCallbackThroughHandle(closureCallbackPointer, increaseCounter); |
| Expect.equals(2, globalCounter); |
| } |
| |
| final someObject = SomeClass(12356789); |
| |
| Object returnHandleCallback() { |
| print("returnHandleCallback returning $someObject"); |
| return someObject; |
| } |
| |
| final returnHandleCallbackPointer = |
| Pointer.fromFunction<Handle Function()>(returnHandleCallback); |
| |
| void testReturnHandleInCallback() { |
| print("testReturnHandleInCallback"); |
| final result = returnHandleInCallback(returnHandleCallbackPointer); |
| Expect.isTrue(identical(someObject, result)); |
| } |
| |
| class SomeClass { |
| // We use this getter in the native api, don't tree shake it. |
| @pragma("vm:entry-point") |
| final int a; |
| SomeClass(this.a); |
| } |
| |
| void testPropagateError() { |
| final s = SomeOtherClass(123); |
| Expect.throws(() => handleReadFieldValue(s)); |
| } |
| |
| class SomeOtherClass { |
| final int notA; |
| SomeOtherClass(this.notA); |
| } |
| |
| final someException = Exception("exceptionHandleCallback exception"); |
| |
| Object exceptionHandleCallback() { |
| print("exceptionHandleCallback throwing ($someException)"); |
| throw someException; |
| } |
| |
| final exceptionHandleCallbackPointer = |
| Pointer.fromFunction<Handle Function()>(exceptionHandleCallback); |
| |
| void testCallbackReturnException() { |
| print("testCallbackReturnException"); |
| bool throws = false; |
| try { |
| final result = returnHandleInCallback(exceptionHandleCallbackPointer); |
| print(result); |
| } catch (e) { |
| throws = true; |
| print("caught ($e)"); |
| Expect.isTrue(identical(someException, e)); |
| } |
| Expect.isTrue(throws); |
| } |
| |
| Object callCAgainFromCallback() { |
| print("callCAgainFromCallback"); |
| final s = SomeOtherClass(123); |
| Expect.throws(() => handleReadFieldValue(s)); |
| return someObject; |
| } |
| |
| final callCAgainFromCallbackPointer = |
| Pointer.fromFunction<Handle Function()>(callCAgainFromCallback); |
| |
| void testDeepException() { |
| print("testDeepException"); |
| final result = returnHandleInCallback(callCAgainFromCallbackPointer); |
| Expect.isTrue(identical(someObject, result)); |
| } |
| |
| Object callCAgainFromCallback2() { |
| print("callCAgainFromCallback2"); |
| final s = SomeOtherClass(123); |
| handleReadFieldValue(s); // throws. |
| return someObject; |
| } |
| |
| final callCAgainFromCallbackPointer2 = |
| Pointer.fromFunction<Handle Function()>(callCAgainFromCallback2); |
| |
| void testDeepException2() { |
| print("testDeepException2"); |
| Expect.throws(() => returnHandleInCallback(callCAgainFromCallbackPointer2)); |
| } |
| |
| Object returnNullHandleCallback() { |
| print("returnHandleCallback returning null"); |
| return null; |
| } |
| |
| final returnNullHandleCallbackPointer = |
| Pointer.fromFunction<Handle Function()>(returnNullHandleCallback); |
| |
| void testNull() { |
| print("testNull"); |
| final result = passObjectToC(null); |
| Expect.isNull(result); |
| |
| final result2 = returnHandleInCallback(returnNullHandleCallbackPointer); |
| Expect.isNull(result2); |
| } |
| |
| Object recurseAbove0(int i) { |
| print("recurseAbove0($i)"); |
| if (i == 0) { |
| print("throwing"); |
| throw someException; |
| } |
| if (i < 0) { |
| print("returning"); |
| return someObject; |
| } |
| final result = |
| handleRecursion(SomeClassWithMethod(), recurseAbove0Pointer, i - 1); |
| print("return $i"); |
| return result; |
| } |
| |
| final recurseAbove0Pointer = |
| Pointer.fromFunction<Handle Function(Int64)>(recurseAbove0); |
| |
| class SomeClassWithMethod { |
| // We use this method in the native api, don't tree shake it. |
| @pragma("vm:entry-point") |
| Object a(int i) => recurseAbove0(i); |
| } |
| |
| void testDeepRecursive() { |
| // works on arm. |
| Expect.throws(() { |
| handleRecursion(123, recurseAbove0Pointer, 1); |
| }); |
| |
| Expect.throws(() { |
| handleRecursion(SomeClassWithMethod(), recurseAbove0Pointer, 1); |
| }); |
| |
| Expect.throws(() { |
| recurseAbove0(100); |
| }); |
| |
| final result = recurseAbove0(101); |
| Expect.isTrue(identical(someObject, result)); |
| } |
| |
| void testNoHandlePropagateError() { |
| bool throws = false; |
| try { |
| final result = propagateErrorWithoutHandle(exceptionHandleCallbackPointer); |
| print(result); |
| } catch (e) { |
| throws = true; |
| print("caught ($e)"); |
| Expect.isTrue(identical(someException, e)); |
| } |
| Expect.isTrue(throws); |
| } |
| |
| final testLibrary = dlopenPlatformSpecific("ffi_test_functions"); |
| |
| final passObjectToC = testLibrary.lookupFunction<Handle Function(Handle), |
| Object Function(Object)>("PassObjectToC"); |
| |
| final handleReadFieldValue = |
| testLibrary.lookupFunction<Int64 Function(Handle), int Function(Object)>( |
| "HandleReadFieldValue"); |
| |
| final trueHandle = testLibrary |
| .lookupFunction<Handle Function(), Object Function()>("TrueHandle"); |
| |
| final closureCallbackThroughHandle = testLibrary.lookupFunction< |
| Void Function(Pointer<NativeFunction<Void Function(Handle)>>, Handle), |
| void Function(Pointer<NativeFunction<Void Function(Handle)>>, |
| Object)>("ClosureCallbackThroughHandle"); |
| |
| final returnHandleInCallback = testLibrary.lookupFunction< |
| Handle Function(Pointer<NativeFunction<Handle Function()>>), |
| Object Function( |
| Pointer<NativeFunction<Handle Function()>>)>("ReturnHandleInCallback"); |
| |
| final handleRecursion = testLibrary.lookupFunction< |
| Handle Function( |
| Handle, Pointer<NativeFunction<Handle Function(Int64)>>, Int64), |
| Object Function(Object, Pointer<NativeFunction<Handle Function(Int64)>>, |
| int)>("HandleRecursion"); |
| |
| final propagateErrorWithoutHandle = testLibrary.lookupFunction< |
| Int64 Function(Pointer<NativeFunction<Handle Function()>>), |
| int Function(Pointer<NativeFunction<Handle Function()>>)>( |
| "PropagateErrorWithoutHandle"); |