| 1 | # The MIT License (MIT) |
| 2 | # |
| 3 | # Copyright (c) 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 |
| 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 | self._ptr = None |
| 48 | |
| 49 | def __repr__(self): |
| 50 | return '<{}.{} object @ {}>'.format(self.__class__.__module__, |
| 51 | self.__class__.__name__, |
| 52 | hex(self.addr)) |
| 53 | |
| 54 | |
| 55 | class _PrivateObject: |
| 56 | def __del__(self): |
| 57 | pub_ptr = getattr(self, '_pub_ptr', None) |
| 58 | native_bt.put(pub_ptr) |
| 59 | self._pub_ptr = None |
| 60 | super().__del__() |
| 61 | |
| 62 | |
| 63 | class _Freezable(metaclass=abc.ABCMeta): |
| 64 | @property |
| 65 | def is_frozen(self): |
| 66 | return self._is_frozen() |
| 67 | |
| 68 | @property |
| 69 | def frozen(self): |
| 70 | return self.is_frozen |
| 71 | |
| 72 | def freeze(self): |
| 73 | self._freeze() |
| 74 | |
| 75 | @abc.abstractmethod |
| 76 | def _is_frozen(self): |
| 77 | pass |
| 78 | |
| 79 | @abc.abstractmethod |
| 80 | def _freeze(self): |
| 81 | pass |