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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def xross_view(*op_functions):
 """This decorator should be used to decorate application views that require xross functionality. :param list op_functions: operations (functions, methods) responsible for handling xross requests. Function names considered to be operations names. Using them clients will address those functions (e.g. xross-ready HTML elements may be marked with `data-xop` attributes to define the above mentioned operations, or just define `id` which will serve for the same purpose). They can accept `request` as first argument (for methods it'll be second, as the first is `self`), It can also accept `xross` keyword argument, which will contain any additional `xross attrs` as defined by `xross_listener()`. Those functions should return string or dict (handled by client as JSON) or HTTPResponse, e.g. from `render()` result. Examples: def do_something(request, param1_from_html_el, param2_from_html_el, xross=None):
 return '%s - %s' % (param1_from_html_el, param2_from_html_el) """


    operations_dict = construct_operations_dict(*op_functions)

    def get_request(src):
        return src if isinstance(src, HttpRequest) else None

    def dec_wrapper(func):
        def func_wrapper(*fargs, **fkwargs):

            request_idx = getattr(func, '_req_idx', None)
            if request_idx is None:
                request = get_request(fargs[0])
                request_idx = 0
                if not request:
                    # Possibly a class-based view where 0-attr is `self`.
                    request = get_request(fargs[1])
                    request_idx = 1
                func._req_idx = request_idx

            else:
                request = fargs[request_idx]

            if hasattr(request, '_xross_handler'):
                request._xross_handler._op_bindings.update(operations_dict['_op_bindings'])
            else:
                request._xross_handler = build_handler_class(operations_dict)(request, func)

            try:
                response = func(*fargs, **fkwargs)

            except HandlerException as e:
                return HttpResponseBadRequest(e if settings.DEBUG else b'')

            except ResponseEmpty as e:
                return HttpResponseNotFound(e if settings.DEBUG else b'')

            except ResponseReady as r:
                response = r.response

                if response is None:
                    response = ''

                if isinstance(response, str):
                    response = HttpResponse(response)

                elif isinstance(response, dict):
                    response = HttpResponse(json.dumps(response), content_type='application/json')

            return response

        return func_wrapper
    return dec_wrapper