python: remove internal `import bt2` imports

[babeltrace.git] / src / bindings / python / bt2 / bt2 / utils.py

diff --git a/src/bindings/python/bt2/bt2/utils.py b/src/bindings/python/bt2/bt2/utils.py
index 393f7ed883ec94f651355b7250d02601b190ff1f..6ce992af7df83915119d0f5c2c8e1620826005e4 100644 (file)
--- a/src/bindings/python/bt2/bt2/utils.py
+++ b/src/bindings/python/bt2/bt2/utils.py
@@ -2,9 +2,31 @@
 #
 # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
 
-import bt2
+
 from bt2 import logging as bt2_logging
 from bt2 import native_bt
+from bt2 import error as bt2_error
+
+
+class UnknownObject(Exception):
+    """
+    Raised when a component class handles a query for an object it doesn't
+    know about.
+    """
+
+    pass
+
+
+class _OverflowError(bt2_error._Error, OverflowError):
+    pass
+
+
+class TryAgain(Exception):
+    pass
+
+
+class Stop(StopIteration):
+    pass
 
 
 def _check_bool(o):
@@ -119,30 +141,30 @@ def _handle_func_status(status, msg=None):
 
     if status == native_bt.__BT_FUNC_STATUS_ERROR:
         assert msg is not None
-        raise bt2._Error(msg)
+        raise bt2_error._Error(msg)
     elif status == native_bt.__BT_FUNC_STATUS_MEMORY_ERROR:
         assert msg is not None
-        raise bt2._MemoryError(msg)
+        raise bt2_error._MemoryError(msg)
     elif status == native_bt.__BT_FUNC_STATUS_END:
         if msg is None:
-            raise bt2.Stop
+            raise Stop
         else:
-            raise bt2.Stop(msg)
+            raise Stop(msg)
     elif status == native_bt.__BT_FUNC_STATUS_AGAIN:
         if msg is None:
-            raise bt2.TryAgain
+            raise TryAgain
         else:
-            raise bt2.TryAgain(msg)
+            raise TryAgain(msg)
     elif status == native_bt.__BT_FUNC_STATUS_OVERFLOW_ERROR:
         if msg is None:
-            raise bt2._OverflowError
+            raise _OverflowError
         else:
-            raise bt2._OverflowError(msg)
+            raise _OverflowError(msg)
     elif status == native_bt.__BT_FUNC_STATUS_UNKNOWN_OBJECT:
         if msg is None:
-            raise bt2.UnknownObject
+            raise UnknownObject
         else:
-            raise bt2.UnknownObject(msg)
+            raise UnknownObject(msg)
     else:
         assert False