from inspect import isclass, getmodule
from functools import wraps

import nac3artiq

import device_db


__all__ = ["extern", "kernel"]


nac3 = nac3artiq.NAC3(device_db.device_db["core"]["arguments"]["target"])
allow_module_registration = True
registered_ids = set()

def extern(function):
    global registered_ids
    assert allow_module_registration
    module = getmodule(function)
    module_id = id(module)
    if module_id not in registered_ids:
        nac3.register_module(module)
        registered_ids.add(module_id)
    return function


def kernel(class_or_function):
    global allow_module_registration
    global registered_ids

    assert allow_module_registration
    module = getmodule(class_or_function)
    module_id = id(module)
    if module_id not in registered_ids:
        nac3.register_module(module)
        registered_ids.add(module_id)

    if isclass(class_or_function):
        return class_or_function
    else:
        @wraps(class_or_function)
        def run_on_core(self, *args, **kwargs):
            global allow_module_registration
            if allow_module_registration:
                nac3.analyze()
                allow_module_registration = False
            nac3.compile_method(id(self.__class__), class_or_function.__name__)
        return run_on_core