src/bindings/python/bt2/bt2/packet.py

   1 # The MIT License (MIT)
   2 #
   3 # Copyright (c) 2016-2017 Philippe Proulx <pproulx@efficios.com>
   4 #
   5 # Permission is hereby granted, free of charge, to any person obtaining a copy
   6 # of this software and associated documentation files (the "Software"), to deal
   7 # in the Software without restriction, including without limitation the rights
   8 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9 # copies of the Software, and to permit persons to whom the Software is
  10 # furnished to do so, subject to the following conditions:
  11 #
  12 # The above copyright notice and this permission notice shall be included in
  13 # all copies or substantial portions of the Software.
  14 #
  15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21 # THE SOFTWARE.
  22
  23 from bt2 import native_bt, object
  24 from bt2 import field as bt2_field
  25 from bt2 import stream as bt2_stream
  26
  27
  28 class _PacketConst(object._SharedObject):
  29     _get_ref = staticmethod(native_bt.packet_get_ref)
  30     _put_ref = staticmethod(native_bt.packet_put_ref)
  31     _borrow_stream_ptr = staticmethod(native_bt.packet_borrow_stream_const)
  32     _borrow_context_field_ptr = staticmethod(
  33         native_bt.packet_borrow_context_field_const
  34     )
  35     _stream_pycls = property(lambda _: bt2_stream._StreamConst)
  36     _create_field_from_ptr = staticmethod(bt2_field._create_field_from_const_ptr)
  37
  38     @property
  39     def stream(self):
  40         stream_ptr = self._borrow_stream_ptr(self._ptr)
  41         assert stream_ptr is not None
  42         return self._stream_pycls._create_from_ptr_and_get_ref(stream_ptr)
  43
  44     @property
  45     def context_field(self):
  46         field_ptr = self._borrow_context_field_ptr(self._ptr)
  47
  48         if field_ptr is None:
  49             return
  50
  51         return self._create_field_from_ptr(
  52             field_ptr, self._ptr, self._get_ref, self._put_ref
  53         )
  54
  55
  56 class _Packet(_PacketConst):
  57     _borrow_stream_ptr = staticmethod(native_bt.packet_borrow_stream)
  58     _borrow_context_field_ptr = staticmethod(native_bt.packet_borrow_context_field)
  59     _stream_pycls = property(lambda _: bt2_stream._Stream)
  60     _create_field_from_ptr = staticmethod(bt2_field._create_field_from_ptr)