Problem with std::unique_ptr as callback parameter #613
Description
I have problem with creating FunctionPointer for callback which receives std::unique_ptr as argument.
This is my test function:
class Stream {
public:
using StreamId = std::int32_t;
public:
virtual ~Stream() = default;
[[nodiscard]] virtual StreamId getStreamId() const noexcept = 0;
};
void testOnStreamOpenCb(std::function<void(std::unique_ptr<Stream> stream)>) {
std::cout << "testOnStreamOpenCb";
}
This is my FunctionPointer:
public static class OnStreamOpenCbCallback extends FunctionPointer {
// Loader.load() and allocate() are required only when explicitly creating an instance
static {
Loader.load();
}
protected OnStreamOpenCbCallback() {
allocate();
}
private native void allocate();
// public native void call(@ByVal @UniquePtr @Cast("Stream*") Pointer stream);
// public native void call(@ByVal @Cast("std::unique_ptr<Stream>*") Pointer stream);
public native void call(@MoveUniquePtr @Cast("Stream*") Pointer stream);
}
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD, ElementType.PARAMETER})
@Cast({"std::unique_ptr", "&&"}) @Adapter("UniquePtrAdapter")
public @interface MoveUniquePtr {
String value() default "";
}
I saw uning MoveUniquePtr in tensorflow preset, but there callback returns unique_ptr, not use it as argument.
Here is my map:
infoMap.put(new Info("std::function<void(std::unique_ptr<Stream>stream)>").pointerTypes("OnStreamOpenCbCallback").define());
If I remove cpp function testOnStreamOpenCb, compilation fails because of testOnStreamOpenCb.
Could you please advice me something?