# Source code for txaio._unframework

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    # Copyright (c) Crossbar.io Technologies GmbH
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    """
    This provides a version of the API which only throws exceptions;
    this is the default so that you have to pick asyncio or twisted
    explicitly by calling .use_twisted() or .use_asyncio()
    """

    from __future__ import absolute_import, division, print_function
    from txaio import _Config

    using_twisted = False
    using_asyncio = False
    config = _Config()

    def _throw_usage_error(*args, **kw):
        raise RuntimeError(
            "To use txaio, you must first select a framework "
            "with .use_twisted() or .use_asyncio()"
        )

    # all the txaio API methods just raise the error
    with_config = _throw_usage_error
    create_future = _throw_usage_error
    create_future_success = _throw_usage_error
    create_future_error = _throw_usage_error
    create_failure = _throw_usage_error
    as_future = _throw_usage_error
    is_future = _throw_usage_error
    reject = _throw_usage_error
    resolve = _throw_usage_error
    add_callbacks = _throw_usage_error
    gather = _throw_usage_error
    is_called = _throw_usage_error

    call_later = _throw_usage_error

    failure_message = _throw_usage_error
    failure_traceback = _throw_usage_error
    failure_format_traceback = _throw_usage_error

    make_batched_timer = _throw_usage_error

    make_logger = _throw_usage_error
    start_logging = _throw_usage_error
    set_global_log_level = _throw_usage_error
    get_global_log_level = _throw_usage_error

    add_log_categories = _throw_usage_error

    IFailedFuture = _throw_usage_error
    ILogger = _throw_usage_error

    sleep = _throw_usage_error