lib: add precond. check for begin <= end on pkt./ev. disc. msg. creation

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

diff --git a/src/bindings/python/bt2/bt2/message_iterator.py b/src/bindings/python/bt2/bt2/message_iterator.py
index 2fef7d68dfcb183f6cf15b5d78c5b9a9b008d686..ed5b8e58614cebf7d01f3313f50c267d84936a3e 100644 (file)
--- a/src/bindings/python/bt2/bt2/message_iterator.py
+++ b/src/bindings/python/bt2/bt2/message_iterator.py
@@ -1,24 +1,6 @@
-# The MIT License (MIT)
+# SPDX-License-Identifier: MIT
 #
 # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
 
 from bt2 import native_bt, object, utils
 from bt2 import message as bt2_message
@@ -398,6 +380,14 @@ class _UserMessageIterator(_MessageIterator):
 
             utils._check_uint64(beg_clock_snapshot)
             utils._check_uint64(end_clock_snapshot)
+
+            if beg_clock_snapshot > end_clock_snapshot:
+                raise ValueError(
+                    'beginning default clock snapshot value ({}) is greater than end default clock snapshot value ({})'.format(
+                        beg_clock_snapshot, end_clock_snapshot
+                    )
+                )
+
             ptr = native_bt.message_discarded_events_create_with_default_clock_snapshots(
                 self._bt_ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot
             )
@@ -435,6 +425,14 @@ class _UserMessageIterator(_MessageIterator):
 
             utils._check_uint64(beg_clock_snapshot)
             utils._check_uint64(end_clock_snapshot)
+
+            if beg_clock_snapshot > end_clock_snapshot:
+                raise ValueError(
+                    'beginning default clock snapshot value ({}) is greater than end default clock snapshot value ({})'.format(
+                        beg_clock_snapshot, end_clock_snapshot
+                    )
+                )
+
             ptr = native_bt.message_discarded_packets_create_with_default_clock_snapshots(
                 self._bt_ptr, stream._ptr, beg_clock_snapshot, end_clock_snapshot
             )