On Friday, June 16, 2017 at 10:38:09 AM UTC+2, Kirill Prazdnikov wrote:
>
> Hi, since arrays are very slow (see
> https://github.com/gwtproject/gwt/issues/9501)
>
> I have to use the following code to workaround:
>
> public native byte[] createFastInt8(int size) /*-{
> return new Int8Array(size);
> }-*/;
>
>
> The same time I want to avoid using JSNI to be future compatible so
>
> How to do that is pure JsInterop ?
>
>
I believe you'd have to somehow use JSNI to cast the Int8Array to a byte[];
though I believe you could delegate that to jsinterop-base's
Js.uncheckedCast().
AFAICT, there'll be a version of jsinterop-base without JSNI for use with
j2cl (or possibly a version that'd work with both seamlessly, e.g. using
super-source for GWT).
So that should work (you could also use the Int8Array from elemental2-core;
and that one uses Js.cast() to cast to double[], so maybe you could use
Js.cast() rather than Js.uncheckedCast()):
@JsType(isNative=true, namespace=JsPackage.GLOBAL)
public class Int8Array {
public Int8Array(int size) {}
}
public static byte[] createFastInt8(int size) {
return Js.uncheckedCast(new Int8Array(size));
}
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