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81447b5b PP |
1 | # The MIT License (MIT) |
2 | # | |
3 | # Copyright (c) 2016 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 | |
24 | import abc | |
25 | ||
26 | ||
27 | class _Object: | |
28 | def __init__(self, ptr): | |
29 | self._ptr = ptr | |
30 | ||
31 | @property | |
32 | def addr(self): | |
33 | return int(self._ptr) | |
34 | ||
35 | @classmethod | |
36 | def _create_from_ptr(cls, ptr): | |
37 | obj = cls.__new__(cls) | |
38 | obj._ptr = ptr | |
39 | return obj | |
40 | ||
41 | def _get(self): | |
42 | native_bt.get(self._ptr) | |
43 | ||
44 | def __del__(self): | |
45 | ptr = getattr(self, '_ptr', None) | |
46 | native_bt.put(ptr) | |
47 | ||
48 | def __repr__(self): | |
49 | return '<{}.{} object @ {}>'.format(self.__class__.__module__, | |
50 | self.__class__.__name__, | |
51 | hex(self.addr)) | |
52 | ||
53 | ||
54 | class _Freezable(metaclass=abc.ABCMeta): | |
55 | @property | |
56 | def is_frozen(self): | |
57 | return self._is_frozen() | |
58 | ||
59 | @property | |
60 | def frozen(self): | |
61 | return self.is_frozen | |
62 | ||
63 | def freeze(self): | |
64 | self._freeze() | |
65 | ||
66 | @abc.abstractmethod | |
67 | def _is_frozen(self): | |
68 | pass | |
69 | ||
70 | @abc.abstractmethod | |
71 | def _freeze(self): | |
72 | pass |