from functools import wraps

def log_args_decorator(func):
    """
    A decorator that logs the arguments passed to a function.
    """
    @wraps(func)
    def wrapper(*args, **kwargs):
        arg_names = func.__code__.co_varnames[:func.__code__.co_argcount]
        pos_args = dict(zip(arg_names, args))
        all_args = {**pos_args, **kwargs}

        print(f"Calling function '{func.__name__}' with arguments: {all_args}")
        result = func(*args, **kwargs)
        print(f"Function '{func.__name__}' returned: {result}")
        return result
    return wrapper