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cd7c9922eb
This will automatically desugar FfiNative calls passing
NativeFieldWrapperClass1 handles to use Pointer when
the underlying native function expects a pointer.
E.g.:
```
class ClassWithNativeField extends NativeFieldWrapperClass1 {}
@FfiNative<IntPtr Function(Pointer<Void>)>('PassAsPointer')
external int passAsPointer(ClassWithNativeField obj);
passAsPointer(ClassWithNativeField());
// Becomes roughly:
// #t0 = PointerClassWithNativeField();
// passAsPointer(Pointer.fromAddress(getNativeField(#t0)));
// reachabilityFence(#t0);
```
TEST=Adds new tests in tests/ffi/ffi_native_test.dart.
Change-Id: I4460f9249803054f12be5d5ff34dbdf7c96567fd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/213260
Commit-Queue: Clement Skau <cskau@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
42 lines
1.5 KiB
Dart
42 lines
1.5 KiB
Dart
// Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// NOTE: There is no `test/ffi_2/...` version of this test since annotations
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// with type arguments isn't supported in that version of Dart.
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import 'dart:ffi';
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import 'dart:nativewrappers';
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import 'package:expect/expect.dart';
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// Error: FFI leaf call must not have Handle return type.
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@FfiNative<Handle Function()>("foo", isLeaf: true) //# 01: compile-time error
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external Object foo(); //# 01: compile-time error
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// Error: FFI leaf call must not have Handle argument types.
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@FfiNative<Void Function(Handle)>("bar", isLeaf: true) //# 02: compile-time error
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external void bar(Object); //# 02: compile-time error
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class Classy {
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@FfiNative<IntPtr Function(IntPtr)>('ReturnIntPtr')
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external static int returnIntPtrStatic(int x);
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// Error: FfiNative annotations can only be used on static functions.
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@FfiNative<IntPtr Function(IntPtr)>('ReturnIntPtr') //# 03: compile-time error
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external int returnIntPtrMethod(int x); //# 03: compile-time error
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}
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// Regression test: Ensure same-name FfiNative functions don't collide in the
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// top-level namespace, but instead live under their parent (Library, Class).
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class A {
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@FfiNative<Void Function()>('nop')
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external static void foo();
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}
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class B {
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@FfiNative<Void Function()>('nop')
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external static void foo();
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}
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void main() { /* Intentionally empty: Compile-time error tests. */ }
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