NativeArrayWrapper.hx

@:generic class NativeArrayWrapper<T>
{
	public var cls(default, null):Class<T>;
	
	public function get(idx:Int):Dynamic { return throw "not implemented"; }
	public function get_f(idx:Int):Float { return get(idx); }
	
	public function set(idx:Int, v:Dynamic):Dynamic { return throw "not implemented"; }
	public function set_f(idx:Int, v:Float):Float { return set(idx, v); }
	
	public static function alloc<T>(cl:Class<T>, size:Int):NativeArrayWrapper<T>
	{
		switch(cl)
		{
			case Int: return new IntNativeArray(size);
			case ....
			
			default: return new DynamicNativeArray(cl, size);
		}
	}
}

class IntNativeArray extends NativeArrayWrapper<Int>
{
	private var arr:NativeArray<Int>;
	
	public function new(size:Int)
	{
		this.cls = Int;
		this.arr = new NativeArray<Int>(size);
	}
	
	override public function get(idx:Int):Dynamic
	{
		return arr[idx];
	}
	
	override public function get_f(idx:Int):Float
	{
		return arr[idx];
	}
	
	override public function set(idx:Int, v:Dynamic):Dynamic
	{
		arr[idx] = v;
		return v;
	}
	
	override public function set_f(idx:Int, v:Float):Float
	{
		return arr[idx] = cast v;
	}
}

//and so on..