first commit

python3-vckonline/lib/python3.8/site-packages/aiofiles/threadpool/utils.py

@@ -0,0 +1,49 @@
+import asyncio
+import functools
+
+
+def delegate_to_executor(*attrs):
+    def cls_builder(cls):
+        for attr_name in attrs:
+            setattr(cls, attr_name, _make_delegate_method(attr_name))
+        return cls
+    return cls_builder
+
+
+def proxy_method_directly(*attrs):
+    def cls_builder(cls):
+        for attr_name in attrs:
+            setattr(cls, attr_name, _make_proxy_method(attr_name))
+        return cls
+
+    return cls_builder
+
+
+def proxy_property_directly(*attrs):
+    def cls_builder(cls):
+        for attr_name in attrs:
+            setattr(cls, attr_name, _make_proxy_property(attr_name))
+        return cls
+
+    return cls_builder
+
+
+def _make_delegate_method(attr_name):
+    @asyncio.coroutine
+    def method(self, *args, **kwargs):
+        cb = functools.partial(getattr(self._file, attr_name),
+                               *args, **kwargs)
+        return (yield from self._loop.run_in_executor(self._executor, cb))
+    return method
+
+
+def _make_proxy_method(attr_name):
+    def method(self, *args, **kwargs):
+        return getattr(self._file, attr_name)(*args, **kwargs)
+    return method
+
+
+def _make_proxy_property(attr_name):
+    def proxy_property(self):
+        return getattr(self._file, attr_name)
+    return property(proxy_property)