Commit | Line | Data |
---|---|---|
0235b0db | 1 | # SPDX-License-Identifier: MIT |
d47b87ac SM |
2 | # |
3 | # Copyright (c) 2018 Francis Deslauriers <francis.deslauriers@efficios.com> | |
d47b87ac SM |
4 | |
5 | import collections | |
e5914347 SM |
6 | from bt2 import native_bt |
7 | from bt2 import object as bt2_object | |
d47b87ac SM |
8 | |
9 | ||
e7ceb9df PP |
10 | class FieldPathScope: |
11 | PACKET_CONTEXT = native_bt.FIELD_PATH_SCOPE_PACKET_CONTEXT | |
12 | EVENT_COMMON_CONTEXT = native_bt.FIELD_PATH_SCOPE_EVENT_COMMON_CONTEXT | |
13 | EVENT_SPECIFIC_CONTEXT = native_bt.FIELD_PATH_SCOPE_EVENT_SPECIFIC_CONTEXT | |
14 | EVENT_PAYLOAD = native_bt.FIELD_PATH_SCOPE_EVENT_PAYLOAD | |
d47b87ac SM |
15 | |
16 | ||
17 | class _FieldPathItem: | |
18 | pass | |
19 | ||
20 | ||
21 | class _IndexFieldPathItem(_FieldPathItem): | |
22 | def __init__(self, index): | |
23 | self._index = index | |
24 | ||
25 | @property | |
26 | def index(self): | |
27 | return self._index | |
28 | ||
29 | ||
30 | class _CurrentArrayElementFieldPathItem(_FieldPathItem): | |
31 | pass | |
32 | ||
33 | ||
cec0261d PP |
34 | class _CurrentOptionContentFieldPathItem(_FieldPathItem): |
35 | pass | |
36 | ||
37 | ||
e5914347 | 38 | class _FieldPathConst(bt2_object._SharedObject, collections.abc.Iterable): |
9dee90bd SM |
39 | @staticmethod |
40 | def _get_ref(ptr): | |
41 | native_bt.field_path_get_ref(ptr) | |
42 | ||
43 | @staticmethod | |
44 | def _put_ref(ptr): | |
45 | native_bt.field_path_put_ref(ptr) | |
d47b87ac SM |
46 | |
47 | @property | |
48 | def root_scope(self): | |
49 | scope = native_bt.field_path_get_root_scope(self._ptr) | |
50 | return _SCOPE_TO_OBJ[scope] | |
51 | ||
52 | def __len__(self): | |
53 | return native_bt.field_path_get_item_count(self._ptr) | |
54 | ||
55 | def __iter__(self): | |
56 | for idx in range(len(self)): | |
57 | item_ptr = native_bt.field_path_borrow_item_by_index_const(self._ptr, idx) | |
58 | assert item_ptr is not None | |
59 | item_type = native_bt.field_path_item_get_type(item_ptr) | |
60 | if item_type == native_bt.FIELD_PATH_ITEM_TYPE_INDEX: | |
61 | idx = native_bt.field_path_item_index_get_index(item_ptr) | |
62 | yield _IndexFieldPathItem(idx) | |
63 | elif item_type == native_bt.FIELD_PATH_ITEM_TYPE_CURRENT_ARRAY_ELEMENT: | |
cfbd7cf3 | 64 | yield _CurrentArrayElementFieldPathItem() |
cec0261d PP |
65 | elif item_type == native_bt.FIELD_PATH_ITEM_TYPE_CURRENT_OPTION_CONTENT: |
66 | yield _CurrentOptionContentFieldPathItem() | |
d47b87ac SM |
67 | else: |
68 | assert False | |
69 | ||
70 | ||
71 | _SCOPE_TO_OBJ = { | |
e7ceb9df PP |
72 | native_bt.FIELD_PATH_SCOPE_PACKET_CONTEXT: FieldPathScope.PACKET_CONTEXT, |
73 | native_bt.FIELD_PATH_SCOPE_EVENT_COMMON_CONTEXT: FieldPathScope.EVENT_COMMON_CONTEXT, | |
74 | native_bt.FIELD_PATH_SCOPE_EVENT_SPECIFIC_CONTEXT: FieldPathScope.EVENT_SPECIFIC_CONTEXT, | |
75 | native_bt.FIELD_PATH_SCOPE_EVENT_PAYLOAD: FieldPathScope.EVENT_PAYLOAD, | |
d47b87ac | 76 | } |