add ydb deps

1 files changed, 46 insertions, 0 deletions

diff --git a/contrib/python/prompt-toolkit/py2/prompt_toolkit/eventloop/asyncio_base.py b/contrib/python/prompt-toolkit/py2/prompt_toolkit/eventloop/asyncio_base.py
new file mode 100644
index 0000000000..ace2b8db49
--- /dev/null
+++ b/contrib/python/prompt-toolkit/py2/prompt_toolkit/eventloop/asyncio_base.py
@@ -0,0 +1,46 @@
+"""
+Eventloop for integration with Python3 asyncio.
+
+Note that we can't use "yield from", because the package should be installable
+under Python 2.6 as well, and it should contain syntactically valid Python 2.6
+code.
+"""
+from __future__ import unicode_literals
+
+__all__ = (
+    'AsyncioTimeout',
+)
+
+
+class AsyncioTimeout(object):
+    """
+    Call the `timeout` function when the timeout expires.
+    Every call of the `reset` method, resets the timeout and starts a new
+    timer.
+    """
+    def __init__(self, timeout, callback, loop):
+        self.timeout = timeout
+        self.callback = callback
+        self.loop = loop
+
+        self.counter = 0
+        self.running = True
+
+    def reset(self):
+        """
+        Reset the timeout. Starts a new timer.
+        """
+        self.counter += 1
+        local_counter = self.counter
+
+        def timer_timeout():
+            if self.counter == local_counter and self.running:
+                self.callback()
+
+        self.loop.call_later(self.timeout, timer_timeout)
+
+    def stop(self):
+        """
+        Ignore timeout. Don't call the callback anymore.
+        """
+        self.running = False