[Feature][YUKUAI_patch]add 18.02 code
Only Configure: No
Affected branch: master
Affected module: unknow
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No
Change-Id: I7f71153004f10fc0ea5adfa083866aaeeb1053ac
diff --git a/rootfs/usr/lib/python3.8/asyncio/base_futures.py b/rootfs/usr/lib/python3.8/asyncio/base_futures.py
new file mode 100644
index 0000000..2c01ac9
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/asyncio/base_futures.py
@@ -0,0 +1,80 @@
+__all__ = ()
+
+import reprlib
+from _thread import get_ident
+
+from . import format_helpers
+
+# States for Future.
+_PENDING = 'PENDING'
+_CANCELLED = 'CANCELLED'
+_FINISHED = 'FINISHED'
+
+
+def isfuture(obj):
+ """Check for a Future.
+
+ This returns True when obj is a Future instance or is advertising
+ itself as duck-type compatible by setting _asyncio_future_blocking.
+ See comment in Future for more details.
+ """
+ return (hasattr(obj.__class__, '_asyncio_future_blocking') and
+ obj._asyncio_future_blocking is not None)
+
+
+def _format_callbacks(cb):
+ """helper function for Future.__repr__"""
+ size = len(cb)
+ if not size:
+ cb = ''
+
+ def format_cb(callback):
+ return format_helpers._format_callback_source(callback, ())
+
+ if size == 1:
+ cb = format_cb(cb[0][0])
+ elif size == 2:
+ cb = '{}, {}'.format(format_cb(cb[0][0]), format_cb(cb[1][0]))
+ elif size > 2:
+ cb = '{}, <{} more>, {}'.format(format_cb(cb[0][0]),
+ size - 2,
+ format_cb(cb[-1][0]))
+ return f'cb=[{cb}]'
+
+
+# bpo-42183: _repr_running is needed for repr protection
+# when a Future or Task result contains itself directly or indirectly.
+# The logic is borrowed from @reprlib.recursive_repr decorator.
+# Unfortunately, the direct decorator usage is impossible because of
+# AttributeError: '_asyncio.Task' object has no attribute '__module__' error.
+#
+# After fixing this thing we can return to the decorator based approach.
+_repr_running = set()
+
+
+def _future_repr_info(future):
+ # (Future) -> str
+ """helper function for Future.__repr__"""
+ info = [future._state.lower()]
+ if future._state == _FINISHED:
+ if future._exception is not None:
+ info.append(f'exception={future._exception!r}')
+ else:
+ key = id(future), get_ident()
+ if key in _repr_running:
+ result = '...'
+ else:
+ _repr_running.add(key)
+ try:
+ # use reprlib to limit the length of the output, especially
+ # for very long strings
+ result = reprlib.repr(future._result)
+ finally:
+ _repr_running.discard(key)
+ info.append(f'result={result}')
+ if future._callbacks:
+ info.append(_format_callbacks(future._callbacks))
+ if future._source_traceback:
+ frame = future._source_traceback[-1]
+ info.append(f'created at {frame[0]}:{frame[1]}')
+ return info