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
  26
  27 def _bt2_stream():
  28     from bt2 import stream as bt2_stream
  29
  30     return bt2_stream
  31
  32
  33 class _PacketConst(object._SharedObject):
  34     _get_ref = staticmethod(native_bt.packet_get_ref)
  35     _put_ref = staticmethod(native_bt.packet_put_ref)
  36     _borrow_stream_ptr = staticmethod(native_bt.packet_borrow_stream_const)
  37     _borrow_context_field_ptr = staticmethod(
  38         native_bt.packet_borrow_context_field_const
  39     )
  40     _stream_pycls = property(lambda _: _bt2_stream()._StreamConst)
  41     _create_field_from_ptr = staticmethod(bt2_field._create_field_from_const_ptr)
  42
  43     @property
  44     def stream(self):
  45         stream_ptr = self._borrow_stream_ptr(self._ptr)
  46         assert stream_ptr is not None
  47         return self._stream_pycls._create_from_ptr_and_get_ref(stream_ptr)
  48
  49     @property
  50     def context_field(self):
  51         field_ptr = self._borrow_context_field_ptr(self._ptr)
  52
  53         if field_ptr is None:
  54             return
  55
  56         return self._create_field_from_ptr(
  57             field_ptr, self._ptr, self._get_ref, self._put_ref
  58         )
  59
  60
  61 class _Packet(_PacketConst):
  62     _borrow_stream_ptr = staticmethod(native_bt.packet_borrow_stream)
  63     _borrow_context_field_ptr = staticmethod(native_bt.packet_borrow_context_field)
  64     _stream_pycls = property(lambda _: _bt2_stream()._Stream)
  65     _create_field_from_ptr = staticmethod(bt2_field._create_field_from_ptr)