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81447b5b PP |
1 | # The MIT License (MIT) |
2 | # | |
811644b8 | 3 | # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> |
81447b5b PP |
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, utils | |
b4f45851 | 24 | import bt2.field_class |
81447b5b PP |
25 | import collections.abc |
26 | import functools | |
27 | import numbers | |
28 | import math | |
29 | import abc | |
30 | import bt2 | |
31 | ||
32 | ||
e1c6bebd JG |
33 | def _get_leaf_field(obj): |
34 | if type(obj) is not _VariantField: | |
35 | return obj | |
36 | ||
37 | return _get_leaf_field(obj.selected_field) | |
38 | ||
39 | ||
81447b5b | 40 | def _create_from_ptr(ptr): |
b4f45851 | 41 | # recreate the field class wrapper of this field's type (the identity |
81447b5b PP |
42 | # could be different, but the underlying address should be the |
43 | # same) | |
b4f45851 SM |
44 | field_class_ptr = native_bt.field_get_type(ptr) |
45 | utils._handle_ptr(field_class_ptr, "cannot get field object's type") | |
46 | field_class = bt2.field_class._create_from_ptr(field_class_ptr) | |
47 | typeid = native_bt.field_class_get_type_id(field_class._ptr) | |
81447b5b | 48 | field = _TYPE_ID_TO_OBJ[typeid]._create_from_ptr(ptr) |
b4f45851 | 49 | field._field_class = field_class |
81447b5b PP |
50 | return field |
51 | ||
52 | ||
53 | class _Field(object._Object, metaclass=abc.ABCMeta): | |
54 | def __copy__(self): | |
50842bdc | 55 | ptr = native_bt.field_copy(self._ptr) |
81447b5b PP |
56 | utils._handle_ptr(ptr, 'cannot copy {} field object'.format(self._NAME.lower())) |
57 | return _create_from_ptr(ptr) | |
58 | ||
59 | def __deepcopy__(self, memo): | |
60 | cpy = self.__copy__() | |
61 | memo[id(self)] = cpy | |
62 | return cpy | |
63 | ||
e1c6bebd | 64 | def __eq__(self, other): |
b4f45851 | 65 | # special case: two unset fields with the same field class are equal |
e1c6bebd JG |
66 | if isinstance(other, _Field): |
67 | if not self.is_set or not other.is_set: | |
b4f45851 | 68 | if not self.is_set and not other.is_set and self.field_class == other.field_class: |
e1c6bebd JG |
69 | return True |
70 | return False | |
71 | ||
72 | other = _get_leaf_field(other) | |
73 | return self._spec_eq(other) | |
74 | ||
81447b5b | 75 | @property |
b4f45851 SM |
76 | def field_class(self): |
77 | return self._field_class | |
81447b5b | 78 | |
742e4747 JG |
79 | @property |
80 | def is_set(self): | |
50842bdc | 81 | is_set = native_bt.field_is_set(self._ptr) |
742e4747 JG |
82 | return is_set > 0 |
83 | ||
84 | def reset(self): | |
50842bdc | 85 | ret = native_bt.field_reset(self._ptr) |
742e4747 JG |
86 | utils._handle_ret(ret, "cannot reset field object's value") |
87 | ||
12bf0d88 JG |
88 | def _repr(self): |
89 | raise NotImplementedError | |
90 | ||
91 | def __repr__(self): | |
92 | return self._repr() if self.is_set else 'Unset' | |
93 | ||
81447b5b PP |
94 | |
95 | @functools.total_ordering | |
96 | class _NumericField(_Field): | |
97 | @staticmethod | |
98 | def _extract_value(other): | |
99 | if other is True or other is False: | |
100 | return other | |
101 | ||
102 | if isinstance(other, numbers.Integral): | |
103 | return int(other) | |
104 | ||
105 | if isinstance(other, numbers.Real): | |
106 | return float(other) | |
107 | ||
108 | if isinstance(other, numbers.Complex): | |
109 | return complex(other) | |
110 | ||
111 | raise TypeError("'{}' object is not a number object".format(other.__class__.__name__)) | |
112 | ||
113 | def __int__(self): | |
e1c6bebd | 114 | return int(self._value) |
81447b5b PP |
115 | |
116 | def __float__(self): | |
e1c6bebd | 117 | return float(self._value) |
81447b5b | 118 | |
12bf0d88 | 119 | def _repr(self): |
5abb9e33 | 120 | return repr(self._value) |
81447b5b PP |
121 | |
122 | def __lt__(self, other): | |
123 | if not isinstance(other, numbers.Number): | |
124 | raise TypeError('unorderable types: {}() < {}()'.format(self.__class__.__name__, | |
125 | other.__class__.__name__)) | |
126 | ||
e1c6bebd | 127 | return self._value < float(other) |
81447b5b PP |
128 | |
129 | def __le__(self, other): | |
130 | if not isinstance(other, numbers.Number): | |
131 | raise TypeError('unorderable types: {}() <= {}()'.format(self.__class__.__name__, | |
132 | other.__class__.__name__)) | |
133 | ||
e1c6bebd | 134 | return self._value <= float(other) |
81447b5b | 135 | |
e1c6bebd | 136 | def _spec_eq(self, other): |
81447b5b PP |
137 | if not isinstance(other, numbers.Number): |
138 | return False | |
139 | ||
e1c6bebd | 140 | return self._value == complex(other) |
81447b5b PP |
141 | |
142 | def __rmod__(self, other): | |
e1c6bebd | 143 | return self._extract_value(other) % self._value |
81447b5b PP |
144 | |
145 | def __mod__(self, other): | |
e1c6bebd | 146 | return self._value % self._extract_value(other) |
81447b5b PP |
147 | |
148 | def __rfloordiv__(self, other): | |
e1c6bebd | 149 | return self._extract_value(other) // self._value |
81447b5b PP |
150 | |
151 | def __floordiv__(self, other): | |
e1c6bebd | 152 | return self._value // self._extract_value(other) |
81447b5b PP |
153 | |
154 | def __round__(self, ndigits=None): | |
155 | if ndigits is None: | |
e1c6bebd | 156 | return round(self._value) |
81447b5b | 157 | else: |
e1c6bebd | 158 | return round(self._value, ndigits) |
81447b5b PP |
159 | |
160 | def __ceil__(self): | |
e1c6bebd | 161 | return math.ceil(self._value) |
81447b5b PP |
162 | |
163 | def __floor__(self): | |
e1c6bebd | 164 | return math.floor(self._value) |
81447b5b PP |
165 | |
166 | def __trunc__(self): | |
e1c6bebd | 167 | return int(self._value) |
81447b5b PP |
168 | |
169 | def __abs__(self): | |
e1c6bebd | 170 | return abs(self._value) |
81447b5b PP |
171 | |
172 | def __add__(self, other): | |
e1c6bebd | 173 | return self._value + self._extract_value(other) |
81447b5b PP |
174 | |
175 | def __radd__(self, other): | |
176 | return self.__add__(other) | |
177 | ||
178 | def __neg__(self): | |
e1c6bebd | 179 | return -self._value |
81447b5b PP |
180 | |
181 | def __pos__(self): | |
e1c6bebd | 182 | return +self._value |
81447b5b PP |
183 | |
184 | def __mul__(self, other): | |
e1c6bebd | 185 | return self._value * self._extract_value(other) |
81447b5b PP |
186 | |
187 | def __rmul__(self, other): | |
188 | return self.__mul__(other) | |
189 | ||
190 | def __truediv__(self, other): | |
e1c6bebd | 191 | return self._value / self._extract_value(other) |
81447b5b PP |
192 | |
193 | def __rtruediv__(self, other): | |
e1c6bebd | 194 | return self._extract_value(other) / self._value |
81447b5b PP |
195 | |
196 | def __pow__(self, exponent): | |
e1c6bebd | 197 | return self._value ** self._extract_value(exponent) |
81447b5b PP |
198 | |
199 | def __rpow__(self, base): | |
e1c6bebd | 200 | return self._extract_value(base) ** self._value |
81447b5b PP |
201 | |
202 | def __iadd__(self, other): | |
203 | self.value = self + other | |
204 | return self | |
205 | ||
206 | def __isub__(self, other): | |
207 | self.value = self - other | |
208 | return self | |
209 | ||
210 | def __imul__(self, other): | |
211 | self.value = self * other | |
212 | return self | |
213 | ||
214 | def __itruediv__(self, other): | |
215 | self.value = self / other | |
216 | return self | |
217 | ||
218 | def __ifloordiv__(self, other): | |
219 | self.value = self // other | |
220 | return self | |
221 | ||
222 | def __imod__(self, other): | |
223 | self.value = self % other | |
224 | return self | |
225 | ||
226 | def __ipow__(self, other): | |
227 | self.value = self ** other | |
228 | return self | |
229 | ||
230 | ||
231 | class _IntegralField(_NumericField, numbers.Integral): | |
232 | def __lshift__(self, other): | |
e1c6bebd | 233 | return self._value << self._extract_value(other) |
81447b5b PP |
234 | |
235 | def __rlshift__(self, other): | |
e1c6bebd | 236 | return self._extract_value(other) << self._value |
81447b5b PP |
237 | |
238 | def __rshift__(self, other): | |
e1c6bebd | 239 | return self._value >> self._extract_value(other) |
81447b5b PP |
240 | |
241 | def __rrshift__(self, other): | |
e1c6bebd | 242 | return self._extract_value(other) >> self._value |
81447b5b PP |
243 | |
244 | def __and__(self, other): | |
e1c6bebd | 245 | return self._value & self._extract_value(other) |
81447b5b PP |
246 | |
247 | def __rand__(self, other): | |
e1c6bebd | 248 | return self._extract_value(other) & self._value |
81447b5b PP |
249 | |
250 | def __xor__(self, other): | |
e1c6bebd | 251 | return self._value ^ self._extract_value(other) |
81447b5b PP |
252 | |
253 | def __rxor__(self, other): | |
e1c6bebd | 254 | return self._extract_value(other) ^ self._value |
81447b5b PP |
255 | |
256 | def __or__(self, other): | |
e1c6bebd | 257 | return self._value | self._extract_value(other) |
81447b5b PP |
258 | |
259 | def __ror__(self, other): | |
e1c6bebd | 260 | return self._extract_value(other) | self._value |
81447b5b PP |
261 | |
262 | def __invert__(self): | |
e1c6bebd | 263 | return ~self._value |
81447b5b PP |
264 | |
265 | def __ilshift__(self, other): | |
266 | self.value = self << other | |
267 | return self | |
268 | ||
269 | def __irshift__(self, other): | |
270 | self.value = self >> other | |
271 | return self | |
272 | ||
273 | def __iand__(self, other): | |
274 | self.value = self & other | |
275 | return self | |
276 | ||
277 | def __ixor__(self, other): | |
278 | self.value = self ^ other | |
279 | return self | |
280 | ||
281 | def __ior__(self, other): | |
282 | self.value = self | other | |
283 | return self | |
284 | ||
285 | ||
286 | class _RealField(_NumericField, numbers.Real): | |
287 | pass | |
288 | ||
289 | ||
290 | class _IntegerField(_IntegralField): | |
291 | _NAME = 'Integer' | |
292 | ||
293 | def _value_to_int(self, value): | |
294 | if not isinstance(value, numbers.Real): | |
295 | raise TypeError('expecting a real number object') | |
296 | ||
297 | value = int(value) | |
298 | ||
b4f45851 | 299 | if self.field_class.is_signed: |
81447b5b PP |
300 | utils._check_int64(value) |
301 | else: | |
302 | utils._check_uint64(value) | |
303 | ||
304 | return value | |
305 | ||
306 | @property | |
e1c6bebd | 307 | def _value(self): |
b4f45851 | 308 | if self.field_class.is_signed: |
50842bdc | 309 | ret, value = native_bt.field_signed_integer_get_value(self._ptr) |
81447b5b | 310 | else: |
50842bdc | 311 | ret, value = native_bt.field_unsigned_integer_get_value(self._ptr) |
81447b5b | 312 | |
811644b8 | 313 | if ret < 0: |
e1c6bebd JG |
314 | if not self.is_set: |
315 | return | |
316 | ||
317 | utils._handle_ret(ret, "cannot get integer field's value") | |
811644b8 | 318 | |
81447b5b PP |
319 | return value |
320 | ||
e1c6bebd | 321 | def _set_value(self, value): |
81447b5b PP |
322 | value = self._value_to_int(value) |
323 | ||
b4f45851 | 324 | if self.field_class.is_signed: |
50842bdc | 325 | ret = native_bt.field_signed_integer_set_value(self._ptr, value) |
81447b5b | 326 | else: |
50842bdc | 327 | ret = native_bt.field_unsigned_integer_set_value(self._ptr, value) |
81447b5b PP |
328 | |
329 | utils._handle_ret(ret, "cannot set integer field object's value") | |
330 | ||
e1c6bebd | 331 | value = property(fset=_set_value) |
81447b5b | 332 | |
0b03f63e | 333 | |
81447b5b PP |
334 | class _FloatingPointNumberField(_RealField): |
335 | _NAME = 'Floating point number' | |
336 | ||
337 | def _value_to_float(self, value): | |
338 | if not isinstance(value, numbers.Real): | |
339 | raise TypeError("expecting a real number object") | |
340 | ||
341 | return float(value) | |
342 | ||
343 | @property | |
e1c6bebd | 344 | def _value(self): |
50842bdc | 345 | ret, value = native_bt.field_floating_point_get_value(self._ptr) |
811644b8 PP |
346 | |
347 | if ret < 0: | |
e1c6bebd JG |
348 | if not self.is_set: |
349 | return | |
350 | ||
351 | utils._handle_ret(ret, "cannot get floating point number field's value") | |
811644b8 | 352 | |
81447b5b PP |
353 | return value |
354 | ||
e1c6bebd | 355 | def _set_value(self, value): |
81447b5b | 356 | value = self._value_to_float(value) |
50842bdc | 357 | ret = native_bt.field_floating_point_set_value(self._ptr, value) |
81447b5b PP |
358 | utils._handle_ret(ret, "cannot set floating point number field object's value") |
359 | ||
e1c6bebd | 360 | value = property(fset=_set_value) |
81447b5b | 361 | |
0b03f63e | 362 | |
81447b5b PP |
363 | class _EnumerationField(_IntegerField): |
364 | _NAME = 'Enumeration' | |
365 | ||
366 | @property | |
367 | def integer_field(self): | |
50842bdc | 368 | int_field_ptr = native_bt.field_enumeration_get_container(self._ptr) |
811644b8 | 369 | assert(int_field_ptr) |
81447b5b PP |
370 | return _create_from_ptr(int_field_ptr) |
371 | ||
e1c6bebd | 372 | def _set_value(self, value): |
81447b5b PP |
373 | self.integer_field.value = value |
374 | ||
12bf0d88 | 375 | def _repr(self): |
4addd228 JG |
376 | labels = [repr(v.name) for v in self.mappings] |
377 | return '{} ({})'.format(self._value, ', '.join(labels)) | |
378 | ||
e1c6bebd JG |
379 | value = property(fset=_set_value) |
380 | ||
381 | @property | |
382 | def _value(self): | |
383 | return self.integer_field._value | |
384 | ||
81447b5b PP |
385 | @property |
386 | def mappings(self): | |
50842bdc | 387 | iter_ptr = native_bt.field_enumeration_get_mappings(self._ptr) |
811644b8 | 388 | assert(iter_ptr) |
b4f45851 SM |
389 | return bt2.field_class._EnumerationFieldClassMappingIterator(iter_ptr, |
390 | self.field_class.is_signed) | |
81447b5b PP |
391 | |
392 | ||
393 | @functools.total_ordering | |
394 | class _StringField(_Field, collections.abc.Sequence): | |
395 | _NAME = 'String' | |
396 | ||
397 | def _value_to_str(self, value): | |
398 | if isinstance(value, self.__class__): | |
e1c6bebd | 399 | value = value._value |
81447b5b PP |
400 | |
401 | if not isinstance(value, str): | |
402 | raise TypeError("expecting a 'str' object") | |
403 | ||
404 | return value | |
405 | ||
406 | @property | |
e1c6bebd | 407 | def _value(self): |
50842bdc | 408 | value = native_bt.field_string_get_value(self._ptr) |
81447b5b PP |
409 | return value |
410 | ||
e1c6bebd | 411 | def _set_value(self, value): |
81447b5b | 412 | value = self._value_to_str(value) |
50842bdc | 413 | ret = native_bt.field_string_set_value(self._ptr, value) |
81447b5b PP |
414 | utils._handle_ret(ret, "cannot set string field object's value") |
415 | ||
e1c6bebd JG |
416 | value = property(fset=_set_value) |
417 | ||
418 | def _spec_eq(self, other): | |
81447b5b PP |
419 | try: |
420 | other = self._value_to_str(other) | |
421 | except: | |
422 | return False | |
423 | ||
e1c6bebd | 424 | return self._value == other |
81447b5b PP |
425 | |
426 | def __le__(self, other): | |
e1c6bebd | 427 | return self._value <= self._value_to_str(other) |
81447b5b PP |
428 | |
429 | def __lt__(self, other): | |
e1c6bebd | 430 | return self._value < self._value_to_str(other) |
81447b5b PP |
431 | |
432 | def __bool__(self): | |
e1c6bebd | 433 | return bool(self._value) |
81447b5b | 434 | |
12bf0d88 | 435 | def _repr(self): |
d623d2e9 JG |
436 | return repr(self._value) |
437 | ||
81447b5b | 438 | def __str__(self): |
12bf0d88 | 439 | return self._value if self.is_set else repr(self) |
81447b5b PP |
440 | |
441 | def __getitem__(self, index): | |
e1c6bebd | 442 | return self._value[index] |
81447b5b PP |
443 | |
444 | def __len__(self): | |
e1c6bebd | 445 | return len(self._value) |
81447b5b PP |
446 | |
447 | def __iadd__(self, value): | |
448 | value = self._value_to_str(value) | |
50842bdc | 449 | ret = native_bt.field_string_append(self._ptr, value) |
81447b5b PP |
450 | utils._handle_ret(ret, "cannot append to string field object's value") |
451 | return self | |
452 | ||
453 | ||
454 | class _ContainerField(_Field): | |
455 | def __bool__(self): | |
456 | return len(self) != 0 | |
457 | ||
458 | def __len__(self): | |
459 | count = self._count() | |
811644b8 | 460 | assert(count >= 0) |
81447b5b PP |
461 | return count |
462 | ||
463 | def __delitem__(self, index): | |
464 | raise NotImplementedError | |
465 | ||
466 | ||
467 | class _StructureField(_ContainerField, collections.abc.MutableMapping): | |
468 | _NAME = 'Structure' | |
469 | ||
470 | def _count(self): | |
b4f45851 | 471 | return len(self.field_class) |
81447b5b PP |
472 | |
473 | def __getitem__(self, key): | |
474 | utils._check_str(key) | |
50842bdc | 475 | ptr = native_bt.field_structure_get_field_by_name(self._ptr, key) |
81447b5b PP |
476 | |
477 | if ptr is None: | |
478 | raise KeyError(key) | |
479 | ||
480 | return _create_from_ptr(ptr) | |
481 | ||
482 | def __setitem__(self, key, value): | |
236355c2 | 483 | # raises if key is somehow invalid |
81447b5b PP |
484 | field = self[key] |
485 | ||
81447b5b PP |
486 | # the field's property does the appropriate conversion or raises |
487 | # the appropriate exception | |
488 | field.value = value | |
489 | ||
490 | def at_index(self, index): | |
491 | utils._check_uint64(index) | |
811644b8 PP |
492 | |
493 | if index >= len(self): | |
494 | raise IndexError | |
495 | ||
50842bdc | 496 | field_ptr = native_bt.field_structure_get_field_by_index(self._ptr, index) |
811644b8 | 497 | assert(field_ptr) |
81447b5b PP |
498 | return _create_from_ptr(field_ptr) |
499 | ||
500 | def __iter__(self): | |
501 | # same name iterator | |
b4f45851 | 502 | return iter(self.field_class) |
81447b5b | 503 | |
e1c6bebd JG |
504 | def _spec_eq(self, other): |
505 | try: | |
506 | if len(self) != len(other): | |
81447b5b PP |
507 | return False |
508 | ||
e1c6bebd JG |
509 | for self_key, self_value in self.items(): |
510 | if self_key not in other: | |
511 | return False | |
81447b5b | 512 | |
e1c6bebd | 513 | other_value = other[self_key] |
81447b5b | 514 | |
e1c6bebd JG |
515 | if self_value != other_value: |
516 | return False | |
517 | ||
518 | return True | |
519 | except: | |
520 | return False | |
81447b5b | 521 | |
7c54e2e7 | 522 | @property |
e1c6bebd JG |
523 | def _value(self): |
524 | return {key: value._value for key, value in self.items()} | |
7c54e2e7 | 525 | |
e1c6bebd JG |
526 | def _set_value(self, values): |
527 | original_values = self._value | |
7c54e2e7 | 528 | |
e1c6bebd JG |
529 | try: |
530 | for key, value in values.items(): | |
531 | self[key].value = value | |
532 | except: | |
533 | self.value = original_values | |
534 | raise | |
7c54e2e7 | 535 | |
e1c6bebd | 536 | value = property(fset=_set_value) |
81447b5b | 537 | |
12bf0d88 | 538 | def _repr(self): |
ac7e2dc6 JG |
539 | items = ['{}: {}'.format(repr(k), repr(v)) for k, v in self.items()] |
540 | return '{{{}}}'.format(', '.join(items)) | |
541 | ||
0b03f63e | 542 | |
81447b5b PP |
543 | class _VariantField(_Field): |
544 | _NAME = 'Variant' | |
545 | ||
546 | @property | |
547 | def tag_field(self): | |
50842bdc | 548 | field_ptr = native_bt.field_variant_get_tag(self._ptr) |
811644b8 PP |
549 | |
550 | if field_ptr is None: | |
551 | return | |
552 | ||
81447b5b PP |
553 | return _create_from_ptr(field_ptr) |
554 | ||
555 | @property | |
556 | def selected_field(self): | |
557 | return self.field() | |
558 | ||
559 | def field(self, tag_field=None): | |
560 | if tag_field is None: | |
50842bdc | 561 | field_ptr = native_bt.field_variant_get_current_field(self._ptr) |
811644b8 PP |
562 | |
563 | if field_ptr is None: | |
564 | return | |
81447b5b PP |
565 | else: |
566 | utils._check_type(tag_field, _EnumerationField) | |
50842bdc | 567 | field_ptr = native_bt.field_variant_get_field(self._ptr, tag_field._ptr) |
81447b5b PP |
568 | utils._handle_ptr(field_ptr, "cannot select variant field object's field") |
569 | ||
570 | return _create_from_ptr(field_ptr) | |
571 | ||
e1c6bebd JG |
572 | def _spec_eq(self, other): |
573 | return _get_leaf_field(self) == other | |
811644b8 PP |
574 | |
575 | def __bool__(self): | |
576 | return bool(self.selected_field) | |
81447b5b | 577 | |
12bf0d88 JG |
578 | def __str__(self): |
579 | return str(self.selected_field) if self.is_set else repr(self) | |
580 | ||
581 | def _repr(self): | |
582 | return repr(self.selected_field) | |
872eeccb | 583 | |
e1c6bebd JG |
584 | @property |
585 | def _value(self): | |
586 | if self.selected_field is not None: | |
587 | return self.selected_field._value | |
588 | ||
589 | def _set_value(self, value): | |
590 | self.selected_field.value = value | |
591 | ||
592 | value = property(fset=_set_value) | |
81447b5b | 593 | |
0b03f63e | 594 | |
81447b5b PP |
595 | class _ArraySequenceField(_ContainerField, collections.abc.MutableSequence): |
596 | def __getitem__(self, index): | |
597 | if not isinstance(index, numbers.Integral): | |
598 | raise TypeError("'{}' is not an integral number object: invalid index".format(index.__class__.__name__)) | |
599 | ||
600 | index = int(index) | |
601 | ||
602 | if index < 0 or index >= len(self): | |
603 | raise IndexError('{} field object index is out of range'.format(self._NAME)) | |
604 | ||
605 | field_ptr = self._get_field_ptr_at_index(index) | |
811644b8 | 606 | assert(field_ptr) |
81447b5b PP |
607 | return _create_from_ptr(field_ptr) |
608 | ||
609 | def __setitem__(self, index, value): | |
610 | # we can only set numbers and strings | |
611 | if not isinstance(value, (numbers.Number, _StringField, str)): | |
612 | raise TypeError('expecting number or string object') | |
613 | ||
614 | # raises if index is somehow invalid | |
615 | field = self[index] | |
616 | ||
617 | if not isinstance(field, (_NumericField, _StringField)): | |
618 | raise TypeError('can only set the value of a number or string field') | |
619 | ||
620 | # the field's property does the appropriate conversion or raises | |
621 | # the appropriate exception | |
622 | field.value = value | |
623 | ||
624 | def insert(self, index, value): | |
625 | raise NotImplementedError | |
626 | ||
e1c6bebd JG |
627 | def _spec_eq(self, other): |
628 | try: | |
629 | if len(self) != len(other): | |
81447b5b PP |
630 | return False |
631 | ||
e1c6bebd JG |
632 | for self_field, other_field in zip(self, other): |
633 | if self_field != other_field: | |
634 | return False | |
7c54e2e7 | 635 | |
e1c6bebd JG |
636 | return True |
637 | except: | |
638 | return False | |
7c54e2e7 | 639 | |
e1c6bebd JG |
640 | @property |
641 | def _value(self): | |
642 | return [field._value for field in self] | |
7c54e2e7 | 643 | |
12bf0d88 | 644 | def _repr(self): |
2bc21382 JG |
645 | return '[{}]'.format(', '.join([repr(v) for v in self])) |
646 | ||
81447b5b PP |
647 | |
648 | class _ArrayField(_ArraySequenceField): | |
649 | _NAME = 'Array' | |
650 | ||
651 | def _count(self): | |
b4f45851 | 652 | return self.field_class.length |
81447b5b PP |
653 | |
654 | def _get_field_ptr_at_index(self, index): | |
50842bdc | 655 | return native_bt.field_array_get_field(self._ptr, index) |
81447b5b | 656 | |
e1c6bebd JG |
657 | def _set_value(self, values): |
658 | if len(self) != len(values): | |
659 | raise ValueError( | |
660 | 'expected length of value and array field to match') | |
661 | ||
662 | original_values = self._value | |
663 | try: | |
664 | for index, value in enumerate(values): | |
665 | if value is not None: | |
666 | self[index].value = value | |
667 | else: | |
668 | self[index].reset() | |
669 | except: | |
670 | self.value = original_values | |
671 | raise | |
672 | ||
673 | value = property(fset=_set_value) | |
674 | ||
81447b5b PP |
675 | |
676 | class _SequenceField(_ArraySequenceField): | |
677 | _NAME = 'Sequence' | |
678 | ||
679 | def _count(self): | |
a29094be | 680 | return int(self.length_field) |
81447b5b PP |
681 | |
682 | @property | |
683 | def length_field(self): | |
50842bdc | 684 | field_ptr = native_bt.field_sequence_get_length(self._ptr) |
a29094be JG |
685 | if field_ptr is None: |
686 | return | |
81447b5b PP |
687 | return _create_from_ptr(field_ptr) |
688 | ||
689 | @length_field.setter | |
690 | def length_field(self, length_field): | |
691 | utils._check_type(length_field, _IntegerField) | |
50842bdc | 692 | ret = native_bt.field_sequence_set_length(self._ptr, length_field._ptr) |
81447b5b PP |
693 | utils._handle_ret(ret, "cannot set sequence field object's length field") |
694 | ||
695 | def _get_field_ptr_at_index(self, index): | |
50842bdc | 696 | return native_bt.field_sequence_get_field(self._ptr, index) |
81447b5b | 697 | |
e1c6bebd JG |
698 | def _set_value(self, values): |
699 | original_length_field = self.length_field | |
700 | if original_length_field is not None: | |
701 | original_values = self._value | |
702 | ||
703 | if len(values) != self.length_field: | |
704 | if self.length_field is not None: | |
b4f45851 | 705 | length_fc = self.length_field.field_class |
e1c6bebd | 706 | else: |
b4f45851 SM |
707 | length_fc = bt2.IntegerFieldClass(size=64, is_signed=False) |
708 | self.length_field = length_fc(len(values)) | |
e1c6bebd JG |
709 | |
710 | try: | |
711 | for index, value in enumerate(values): | |
712 | if value is not None: | |
713 | self[index].value = value | |
714 | else: | |
715 | self[index].reset() | |
716 | except: | |
717 | if original_length_field is not None: | |
718 | self.length_field = original_length_field | |
719 | self.value = original_values | |
720 | else: | |
721 | self.reset() | |
722 | raise | |
723 | ||
724 | value = property(fset=_set_value) | |
81447b5b | 725 | |
0b03f63e | 726 | |
81447b5b | 727 | _TYPE_ID_TO_OBJ = { |
81447b5b | 728 | } |