Calling tasks with string valued arguments

[penguali]

Hi Matthew,

I am currently trying to call SystemVerilog task from Python, which takes a string argument.
The task is defined under the InitiatorImpl class as follows:

virtual task print_arg(output int unsigned retval, input string argument);
    $display(The argument is %s", argument);
endtask

On the Python API side, I have defined the following async function:

@hif.imp
async def print_arg(self, argument : str) -> ct.c_uint32:
        pass

The task inside hdl_call_if_api is defined under the invokeTask as follows:

"print_arg": begin
                int unsigned __retval;
                string __argument = pyhdl_if::string(pyhdl_if::PyTuple_GetItem(args, 0));
                print_arg(
                    __retval, 
                    __argument);
                retval = pyhdl_if::PyLong_FromLong(__retval);

This is causing the following error:

Illegal syntax for a package reference name (string)

As an alternative I tried packing the string on SV's side as a bit array, thus changing pyhdl_if::string to pyhdl_if::PyLong_AsLong and adjusting the types in all classes.

This allowed me to run the test without a problem, however, the string is not passed properly.
Do you have any suggestions on how I could pass the strings correctly?

I appreciate the help.
Ali

[mballance]

Hi Ali,
Many thanks for the bug report! I've investigated and applied a fix. Please update to version 0.0.2, which should be up on 'pypi' shortly.

-Matthew