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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 | |
24 | import collections.abc | |
25 | import functools | |
26 | import numbers | |
27 | import math | |
28 | import abc | |
29 | import bt2 | |
30 | ||
31 | ||
32 | def _handle_status(status, obj_name): | |
33 | if status >= 0: | |
34 | return | |
81447b5b | 35 | else: |
81447b5b PP |
36 | raise RuntimeError('unexpected error') |
37 | ||
38 | ||
39 | def _create_from_ptr(ptr): | |
40 | if ptr is None or ptr == native_bt.value_null: | |
41 | return | |
42 | ||
43 | typeid = native_bt.value_get_type(ptr) | |
44 | return _TYPE_TO_OBJ[typeid]._create_from_ptr(ptr) | |
45 | ||
46 | ||
10a19b49 SM |
47 | def _create_from_ptr_and_get_ref(ptr): |
48 | if ptr is None or ptr == native_bt.value_null: | |
49 | return | |
50 | ||
51 | typeid = native_bt.value_get_type(ptr) | |
52 | return _TYPE_TO_OBJ[typeid]._create_from_ptr_and_get_ref(ptr) | |
53 | ||
54 | ||
81447b5b PP |
55 | def create_value(value): |
56 | if value is None: | |
57 | # null value object | |
58 | return | |
59 | ||
60 | if isinstance(value, _Value): | |
61 | return value | |
62 | ||
63 | if isinstance(value, bool): | |
64 | return BoolValue(value) | |
65 | ||
66 | if isinstance(value, int): | |
fdd3a2da | 67 | return SignedIntegerValue(value) |
81447b5b PP |
68 | |
69 | if isinstance(value, float): | |
10a19b49 | 70 | return RealValue(value) |
81447b5b PP |
71 | |
72 | if isinstance(value, str): | |
73 | return StringValue(value) | |
74 | ||
75 | try: | |
76 | return MapValue(value) | |
77 | except: | |
78 | pass | |
79 | ||
80 | try: | |
81 | return ArrayValue(value) | |
82 | except: | |
83 | pass | |
84 | ||
85 | raise TypeError("cannot create value object from '{}' object".format(value.__class__.__name__)) | |
86 | ||
87 | ||
78288f58 | 88 | class _Value(object._SharedObject, metaclass=abc.ABCMeta): |
10a19b49 SM |
89 | _get_ref = native_bt.value_get_ref |
90 | _put_ref = native_bt.value_put_ref | |
91 | ||
81447b5b PP |
92 | def __eq__(self, other): |
93 | if other is None: | |
94 | # self is never the null value object | |
95 | return False | |
96 | ||
97 | # try type-specific comparison first | |
98 | spec_eq = self._spec_eq(other) | |
99 | ||
100 | if spec_eq is not None: | |
101 | return spec_eq | |
102 | ||
103 | if not isinstance(other, _Value): | |
104 | # not comparing apples to apples | |
105 | return False | |
106 | ||
107 | # fall back to native comparison function | |
108 | return native_bt.value_compare(self._ptr, other._ptr) | |
109 | ||
110 | def __ne__(self, other): | |
111 | return not (self == other) | |
112 | ||
113 | @abc.abstractmethod | |
114 | def _spec_eq(self, other): | |
115 | pass | |
116 | ||
117 | def _handle_status(self, status): | |
118 | _handle_status(status, self._NAME) | |
119 | ||
120 | def _check_create_status(self, ptr): | |
121 | if ptr is None: | |
10a19b49 SM |
122 | raise bt2.CreationError( |
123 | 'cannot create {} value object'.format(self._NAME.lower())) | |
81447b5b PP |
124 | |
125 | ||
126 | @functools.total_ordering | |
10a19b49 | 127 | class _NumericValue(_Value): |
81447b5b PP |
128 | @staticmethod |
129 | def _extract_value(other): | |
130 | if isinstance(other, _NumericValue): | |
9b6cd4a7 | 131 | return other._value |
81447b5b PP |
132 | |
133 | if other is True or other is False: | |
134 | return other | |
135 | ||
136 | if isinstance(other, numbers.Integral): | |
137 | return int(other) | |
138 | ||
139 | if isinstance(other, numbers.Real): | |
140 | return float(other) | |
141 | ||
142 | if isinstance(other, numbers.Complex): | |
143 | return complex(other) | |
144 | ||
145 | raise TypeError("'{}' object is not a number object".format(other.__class__.__name__)) | |
146 | ||
147 | def __int__(self): | |
9b6cd4a7 | 148 | return int(self._value) |
81447b5b PP |
149 | |
150 | def __float__(self): | |
9b6cd4a7 | 151 | return float(self._value) |
81447b5b | 152 | |
83656269 JG |
153 | def __repr__(self): |
154 | return repr(self._value) | |
81447b5b PP |
155 | |
156 | def __lt__(self, other): | |
157 | if not isinstance(other, numbers.Number): | |
158 | raise TypeError('unorderable types: {}() < {}()'.format(self.__class__.__name__, | |
159 | other.__class__.__name__)) | |
160 | ||
9b6cd4a7 | 161 | return self._value < float(other) |
81447b5b PP |
162 | |
163 | def __le__(self, other): | |
164 | if not isinstance(other, numbers.Number): | |
165 | raise TypeError('unorderable types: {}() <= {}()'.format(self.__class__.__name__, | |
166 | other.__class__.__name__)) | |
167 | ||
9b6cd4a7 | 168 | return self._value <= float(other) |
81447b5b PP |
169 | |
170 | def _spec_eq(self, other): | |
811644b8 | 171 | pass |
81447b5b PP |
172 | |
173 | def __eq__(self, other): | |
174 | if not isinstance(other, numbers.Number): | |
175 | return False | |
176 | ||
9b6cd4a7 | 177 | return self._value == complex(other) |
81447b5b PP |
178 | |
179 | def __rmod__(self, other): | |
9b6cd4a7 | 180 | return self._extract_value(other) % self._value |
81447b5b PP |
181 | |
182 | def __mod__(self, other): | |
9b6cd4a7 | 183 | return self._value % self._extract_value(other) |
81447b5b PP |
184 | |
185 | def __rfloordiv__(self, other): | |
9b6cd4a7 | 186 | return self._extract_value(other) // self._value |
81447b5b PP |
187 | |
188 | def __floordiv__(self, other): | |
9b6cd4a7 | 189 | return self._value // self._extract_value(other) |
81447b5b PP |
190 | |
191 | def __round__(self, ndigits=None): | |
192 | if ndigits is None: | |
9b6cd4a7 | 193 | return round(self._value) |
81447b5b | 194 | else: |
9b6cd4a7 | 195 | return round(self._value, ndigits) |
81447b5b PP |
196 | |
197 | def __ceil__(self): | |
9b6cd4a7 | 198 | return math.ceil(self._value) |
81447b5b PP |
199 | |
200 | def __floor__(self): | |
9b6cd4a7 | 201 | return math.floor(self._value) |
81447b5b PP |
202 | |
203 | def __trunc__(self): | |
9b6cd4a7 | 204 | return int(self._value) |
81447b5b PP |
205 | |
206 | def __abs__(self): | |
9b6cd4a7 | 207 | return abs(self._value) |
81447b5b PP |
208 | |
209 | def __add__(self, other): | |
9b6cd4a7 | 210 | return self._value + self._extract_value(other) |
81447b5b PP |
211 | |
212 | def __radd__(self, other): | |
213 | return self.__add__(other) | |
214 | ||
215 | def __neg__(self): | |
9b6cd4a7 | 216 | return -self._value |
81447b5b PP |
217 | |
218 | def __pos__(self): | |
9b6cd4a7 | 219 | return +self._value |
81447b5b PP |
220 | |
221 | def __mul__(self, other): | |
9b6cd4a7 | 222 | return self._value * self._extract_value(other) |
81447b5b PP |
223 | |
224 | def __rmul__(self, other): | |
225 | return self.__mul__(other) | |
226 | ||
227 | def __truediv__(self, other): | |
9b6cd4a7 | 228 | return self._value / self._extract_value(other) |
81447b5b PP |
229 | |
230 | def __rtruediv__(self, other): | |
9b6cd4a7 | 231 | return self._extract_value(other) / self._value |
81447b5b PP |
232 | |
233 | def __pow__(self, exponent): | |
9b6cd4a7 | 234 | return self._value ** self._extract_value(exponent) |
81447b5b PP |
235 | |
236 | def __rpow__(self, base): | |
9b6cd4a7 | 237 | return self._extract_value(base) ** self._value |
81447b5b PP |
238 | |
239 | def __iadd__(self, other): | |
240 | self.value = self + other | |
241 | return self | |
242 | ||
243 | def __isub__(self, other): | |
244 | self.value = self - other | |
245 | return self | |
246 | ||
247 | def __imul__(self, other): | |
248 | self.value = self * other | |
249 | return self | |
250 | ||
251 | def __itruediv__(self, other): | |
252 | self.value = self / other | |
253 | return self | |
254 | ||
255 | def __ifloordiv__(self, other): | |
256 | self.value = self // other | |
257 | return self | |
258 | ||
259 | def __imod__(self, other): | |
260 | self.value = self % other | |
261 | return self | |
262 | ||
263 | def __ipow__(self, other): | |
264 | self.value = self ** other | |
265 | return self | |
266 | ||
267 | ||
268 | class _IntegralValue(_NumericValue, numbers.Integral): | |
269 | def __lshift__(self, other): | |
9b6cd4a7 | 270 | return self._value << self._extract_value(other) |
81447b5b PP |
271 | |
272 | def __rlshift__(self, other): | |
9b6cd4a7 | 273 | return self._extract_value(other) << self._value |
81447b5b PP |
274 | |
275 | def __rshift__(self, other): | |
9b6cd4a7 | 276 | return self._value >> self._extract_value(other) |
81447b5b PP |
277 | |
278 | def __rrshift__(self, other): | |
9b6cd4a7 | 279 | return self._extract_value(other) >> self._value |
81447b5b PP |
280 | |
281 | def __and__(self, other): | |
9b6cd4a7 | 282 | return self._value & self._extract_value(other) |
81447b5b PP |
283 | |
284 | def __rand__(self, other): | |
9b6cd4a7 | 285 | return self._extract_value(other) & self._value |
81447b5b PP |
286 | |
287 | def __xor__(self, other): | |
9b6cd4a7 | 288 | return self._value ^ self._extract_value(other) |
81447b5b PP |
289 | |
290 | def __rxor__(self, other): | |
9b6cd4a7 | 291 | return self._extract_value(other) ^ self._value |
81447b5b PP |
292 | |
293 | def __or__(self, other): | |
9b6cd4a7 | 294 | return self._value | self._extract_value(other) |
81447b5b PP |
295 | |
296 | def __ror__(self, other): | |
9b6cd4a7 | 297 | return self._extract_value(other) | self._value |
81447b5b PP |
298 | |
299 | def __invert__(self): | |
9b6cd4a7 | 300 | return ~self._value |
81447b5b PP |
301 | |
302 | def __ilshift__(self, other): | |
303 | self.value = self << other | |
304 | return self | |
305 | ||
306 | def __irshift__(self, other): | |
307 | self.value = self >> other | |
308 | return self | |
309 | ||
310 | def __iand__(self, other): | |
311 | self.value = self & other | |
312 | return self | |
313 | ||
314 | def __ixor__(self, other): | |
315 | self.value = self ^ other | |
316 | return self | |
317 | ||
318 | def __ior__(self, other): | |
319 | self.value = self | other | |
320 | return self | |
321 | ||
322 | ||
323 | class _RealValue(_NumericValue, numbers.Real): | |
324 | pass | |
325 | ||
326 | ||
10a19b49 | 327 | class BoolValue(_Value): |
81447b5b PP |
328 | _NAME = 'Boolean' |
329 | ||
330 | def __init__(self, value=None): | |
331 | if value is None: | |
332 | ptr = native_bt.value_bool_create() | |
333 | else: | |
334 | ptr = native_bt.value_bool_create_init(self._value_to_bool(value)) | |
335 | ||
336 | self._check_create_status(ptr) | |
337 | super().__init__(ptr) | |
338 | ||
339 | def _spec_eq(self, other): | |
340 | if isinstance(other, numbers.Number): | |
9b6cd4a7 | 341 | return self._value == bool(other) |
81447b5b PP |
342 | |
343 | def __bool__(self): | |
9b6cd4a7 | 344 | return self._value |
81447b5b | 345 | |
83656269 JG |
346 | def __repr__(self): |
347 | return repr(self._value) | |
81447b5b PP |
348 | |
349 | def _value_to_bool(self, value): | |
350 | if isinstance(value, BoolValue): | |
9b6cd4a7 | 351 | value = value._value |
81447b5b PP |
352 | |
353 | if not isinstance(value, bool): | |
354 | raise TypeError("'{}' object is not a 'bool' or 'BoolValue' object".format(value.__class__)) | |
355 | ||
811644b8 | 356 | return int(value) |
81447b5b PP |
357 | |
358 | @property | |
9b6cd4a7 | 359 | def _value(self): |
10a19b49 SM |
360 | value = native_bt.value_bool_get(self._ptr) |
361 | return value != 0 | |
81447b5b | 362 | |
9b6cd4a7 | 363 | def _set_value(self, value): |
10a19b49 | 364 | native_bt.value_bool_set(self._ptr, self._value_to_bool(value)) |
81447b5b | 365 | |
9b6cd4a7 PP |
366 | value = property(fset=_set_value) |
367 | ||
81447b5b | 368 | |
fdd3a2da | 369 | class _IntegerValue(_IntegralValue): |
81447b5b PP |
370 | def __init__(self, value=None): |
371 | if value is None: | |
fdd3a2da | 372 | ptr = self._create_default_value() |
81447b5b | 373 | else: |
fdd3a2da | 374 | ptr = self._create_value(self._value_to_int(value)) |
81447b5b PP |
375 | |
376 | self._check_create_status(ptr) | |
377 | super().__init__(ptr) | |
378 | ||
379 | def _value_to_int(self, value): | |
380 | if not isinstance(value, numbers.Real): | |
381 | raise TypeError('expecting a number object') | |
382 | ||
383 | value = int(value) | |
fdd3a2da | 384 | self._check_int_range(value) |
81447b5b PP |
385 | return value |
386 | ||
387 | @property | |
9b6cd4a7 | 388 | def _value(self): |
fdd3a2da | 389 | return self._get_value(self._ptr) |
81447b5b | 390 | |
fdd3a2da PP |
391 | def _prop_set_value(self, value): |
392 | self._set_value(self._ptr, self._value_to_int(value)) | |
81447b5b | 393 | |
fdd3a2da PP |
394 | value = property(fset=_prop_set_value) |
395 | ||
396 | ||
397 | class UnsignedIntegerValue(_IntegerValue): | |
398 | _check_int_range = staticmethod(utils._check_uint64) | |
399 | _create_default_value = native_bt.value_unsigned_integer_create | |
400 | _create_value = native_bt.value_unsigned_integer_create_init | |
401 | _set_value = native_bt.value_unsigned_integer_set | |
402 | _get_value = native_bt.value_unsigned_integer_get | |
403 | ||
404 | ||
405 | class SignedIntegerValue(_IntegerValue): | |
406 | _check_int_range = staticmethod(utils._check_int64) | |
407 | _create_default_value = native_bt.value_signed_integer_create | |
408 | _create_value = native_bt.value_signed_integer_create_init | |
409 | _set_value = native_bt.value_signed_integer_set | |
410 | _get_value = native_bt.value_signed_integer_get | |
9b6cd4a7 | 411 | |
81447b5b | 412 | |
10a19b49 SM |
413 | class RealValue(_RealValue): |
414 | _NAME = 'Real number' | |
81447b5b PP |
415 | |
416 | def __init__(self, value=None): | |
417 | if value is None: | |
10a19b49 | 418 | ptr = native_bt.value_real_create() |
81447b5b PP |
419 | else: |
420 | value = self._value_to_float(value) | |
10a19b49 | 421 | ptr = native_bt.value_real_create_init(value) |
81447b5b PP |
422 | |
423 | self._check_create_status(ptr) | |
424 | super().__init__(ptr) | |
425 | ||
426 | def _value_to_float(self, value): | |
427 | if not isinstance(value, numbers.Real): | |
428 | raise TypeError("expecting a real number object") | |
429 | ||
430 | return float(value) | |
431 | ||
432 | @property | |
9b6cd4a7 | 433 | def _value(self): |
10a19b49 | 434 | return native_bt.value_real_get(self._ptr) |
81447b5b | 435 | |
9b6cd4a7 | 436 | def _set_value(self, value): |
10a19b49 | 437 | native_bt.value_real_set(self._ptr, self._value_to_float(value)) |
81447b5b | 438 | |
9b6cd4a7 PP |
439 | value = property(fset=_set_value) |
440 | ||
81447b5b PP |
441 | |
442 | @functools.total_ordering | |
10a19b49 | 443 | class StringValue(collections.abc.Sequence, _Value): |
81447b5b PP |
444 | _NAME = 'String' |
445 | ||
446 | def __init__(self, value=None): | |
447 | if value is None: | |
448 | ptr = native_bt.value_string_create() | |
449 | else: | |
450 | ptr = native_bt.value_string_create_init(self._value_to_str(value)) | |
451 | ||
452 | self._check_create_status(ptr) | |
453 | super().__init__(ptr) | |
454 | ||
455 | def _value_to_str(self, value): | |
456 | if isinstance(value, self.__class__): | |
9b6cd4a7 | 457 | value = value._value |
81447b5b PP |
458 | |
459 | utils._check_str(value) | |
460 | return value | |
461 | ||
462 | @property | |
9b6cd4a7 | 463 | def _value(self): |
10a19b49 | 464 | return native_bt.value_string_get(self._ptr) |
81447b5b | 465 | |
9b6cd4a7 | 466 | def _set_value(self, value): |
81447b5b PP |
467 | status = native_bt.value_string_set(self._ptr, self._value_to_str(value)) |
468 | self._handle_status(status) | |
469 | ||
9b6cd4a7 PP |
470 | value = property(fset=_set_value) |
471 | ||
81447b5b PP |
472 | def _spec_eq(self, other): |
473 | try: | |
9b6cd4a7 | 474 | return self._value == self._value_to_str(other) |
81447b5b PP |
475 | except: |
476 | return | |
477 | ||
478 | def __le__(self, other): | |
9b6cd4a7 | 479 | return self._value <= self._value_to_str(other) |
81447b5b PP |
480 | |
481 | def __lt__(self, other): | |
9b6cd4a7 | 482 | return self._value < self._value_to_str(other) |
81447b5b PP |
483 | |
484 | def __bool__(self): | |
9b6cd4a7 | 485 | return bool(self._value) |
81447b5b | 486 | |
83656269 | 487 | def __repr__(self): |
10a19b49 | 488 | return repr(self._value) |
83656269 | 489 | |
81447b5b | 490 | def __str__(self): |
9b6cd4a7 | 491 | return self._value |
81447b5b PP |
492 | |
493 | def __getitem__(self, index): | |
9b6cd4a7 | 494 | return self._value[index] |
81447b5b PP |
495 | |
496 | def __len__(self): | |
9b6cd4a7 | 497 | return len(self._value) |
81447b5b PP |
498 | |
499 | def __iadd__(self, value): | |
9b6cd4a7 | 500 | curvalue = self._value |
81447b5b PP |
501 | curvalue += self._value_to_str(value) |
502 | self.value = curvalue | |
503 | return self | |
504 | ||
505 | ||
506 | class _Container: | |
507 | def __bool__(self): | |
508 | return len(self) != 0 | |
509 | ||
81447b5b PP |
510 | def __delitem__(self, index): |
511 | raise NotImplementedError | |
512 | ||
513 | ||
514 | class ArrayValue(_Container, collections.abc.MutableSequence, _Value): | |
515 | _NAME = 'Array' | |
516 | ||
517 | def __init__(self, value=None): | |
518 | ptr = native_bt.value_array_create() | |
519 | self._check_create_status(ptr) | |
520 | super().__init__(ptr) | |
521 | ||
522 | # Python will raise a TypeError if there's anything wrong with | |
523 | # the iterable protocol. | |
524 | if value is not None: | |
525 | for elem in value: | |
526 | self.append(elem) | |
527 | ||
528 | def _spec_eq(self, other): | |
529 | try: | |
530 | if len(self) != len(other): | |
531 | # early mismatch | |
532 | return False | |
533 | ||
534 | for self_elem, other_elem in zip(self, other): | |
535 | if self_elem != other_elem: | |
536 | return False | |
537 | ||
538 | return True | |
539 | except: | |
540 | return | |
541 | ||
542 | def __len__(self): | |
10a19b49 | 543 | size = native_bt.value_array_get_size(self._ptr) |
811644b8 | 544 | assert(size >= 0) |
81447b5b PP |
545 | return size |
546 | ||
547 | def _check_index(self, index): | |
548 | # TODO: support slices also | |
549 | if not isinstance(index, numbers.Integral): | |
550 | raise TypeError("'{}' object is not an integral number object: invalid index".format(index.__class__.__name__)) | |
551 | ||
552 | index = int(index) | |
553 | ||
554 | if index < 0 or index >= len(self): | |
555 | raise IndexError('array value object index is out of range') | |
556 | ||
557 | def __getitem__(self, index): | |
558 | self._check_index(index) | |
10a19b49 | 559 | ptr = native_bt.value_array_borrow_element_by_index(self._ptr, index) |
811644b8 | 560 | assert(ptr) |
10a19b49 | 561 | return _create_from_ptr_and_get_ref(ptr) |
81447b5b PP |
562 | |
563 | def __setitem__(self, index, value): | |
564 | self._check_index(index) | |
565 | value = create_value(value) | |
566 | ||
567 | if value is None: | |
568 | ptr = native_bt.value_null | |
569 | else: | |
570 | ptr = value._ptr | |
571 | ||
10a19b49 SM |
572 | status = native_bt.value_array_set_element_by_index( |
573 | self._ptr, index, ptr) | |
81447b5b PP |
574 | self._handle_status(status) |
575 | ||
576 | def append(self, value): | |
577 | value = create_value(value) | |
578 | ||
579 | if value is None: | |
580 | ptr = native_bt.value_null | |
581 | else: | |
582 | ptr = value._ptr | |
583 | ||
10a19b49 | 584 | status = native_bt.value_array_append_element(self._ptr, ptr) |
81447b5b PP |
585 | self._handle_status(status) |
586 | ||
587 | def __iadd__(self, iterable): | |
588 | # Python will raise a TypeError if there's anything wrong with | |
589 | # the iterable protocol. | |
590 | for elem in iterable: | |
591 | self.append(elem) | |
592 | ||
593 | return self | |
594 | ||
83656269 JG |
595 | def __repr__(self): |
596 | return '[{}]'.format(', '.join([repr(v) for v in self])) | |
81447b5b PP |
597 | |
598 | def insert(self, value): | |
599 | raise NotImplementedError | |
600 | ||
601 | ||
602 | class _MapValueKeyIterator(collections.abc.Iterator): | |
603 | def __init__(self, map_obj): | |
604 | self._map_obj = map_obj | |
605 | self._at = 0 | |
10a19b49 | 606 | keys_ptr = native_bt.value_map_get_keys(map_obj._ptr) |
81447b5b PP |
607 | |
608 | if keys_ptr is None: | |
609 | raise RuntimeError('unexpected error: cannot get map value object keys') | |
610 | ||
611 | self._keys = _create_from_ptr(keys_ptr) | |
612 | ||
613 | def __next__(self): | |
614 | if self._at == len(self._map_obj): | |
615 | raise StopIteration | |
616 | ||
617 | key = self._keys[self._at] | |
618 | self._at += 1 | |
619 | return str(key) | |
620 | ||
621 | ||
622 | class MapValue(_Container, collections.abc.MutableMapping, _Value): | |
623 | _NAME = 'Map' | |
624 | ||
625 | def __init__(self, value=None): | |
626 | ptr = native_bt.value_map_create() | |
627 | self._check_create_status(ptr) | |
628 | super().__init__(ptr) | |
629 | ||
630 | # Python will raise a TypeError if there's anything wrong with | |
631 | # the iterable/mapping protocol. | |
632 | if value is not None: | |
633 | for key, elem in value.items(): | |
634 | self[key] = elem | |
635 | ||
636 | def __eq__(self, other): | |
637 | return _Value.__eq__(self, other) | |
638 | ||
639 | def __ne__(self, other): | |
640 | return _Value.__ne__(self, other) | |
641 | ||
642 | def _spec_eq(self, other): | |
643 | try: | |
644 | if len(self) != len(other): | |
645 | # early mismatch | |
646 | return False | |
647 | ||
648 | for self_key in self: | |
649 | if self_key not in other: | |
650 | return False | |
651 | ||
652 | self_value = self[self_key] | |
653 | other_value = other[self_key] | |
654 | ||
655 | if self_value != other_value: | |
656 | return False | |
657 | ||
658 | return True | |
659 | except: | |
660 | return | |
661 | ||
662 | def __len__(self): | |
10a19b49 | 663 | size = native_bt.value_map_get_size(self._ptr) |
811644b8 | 664 | assert(size >= 0) |
81447b5b PP |
665 | return size |
666 | ||
667 | def __contains__(self, key): | |
668 | self._check_key_type(key) | |
10a19b49 | 669 | return native_bt.value_map_has_entry(self._ptr, key) |
81447b5b PP |
670 | |
671 | def _check_key_type(self, key): | |
672 | utils._check_str(key) | |
673 | ||
674 | def _check_key(self, key): | |
675 | if key not in self: | |
676 | raise KeyError(key) | |
677 | ||
678 | def __getitem__(self, key): | |
679 | self._check_key(key) | |
10a19b49 | 680 | ptr = native_bt.value_map_borrow_entry_value(self._ptr, key) |
811644b8 | 681 | assert(ptr) |
10a19b49 | 682 | return _create_from_ptr_and_get_ref(ptr) |
81447b5b PP |
683 | |
684 | def __iter__(self): | |
685 | return _MapValueKeyIterator(self) | |
686 | ||
687 | def __setitem__(self, key, value): | |
688 | self._check_key_type(key) | |
689 | value = create_value(value) | |
690 | ||
691 | if value is None: | |
692 | ptr = native_bt.value_null | |
693 | else: | |
694 | ptr = value._ptr | |
695 | ||
10a19b49 | 696 | status = native_bt.value_map_insert_entry(self._ptr, key, ptr) |
81447b5b PP |
697 | self._handle_status(status) |
698 | ||
83656269 JG |
699 | def __repr__(self): |
700 | items = ['{}: {}'.format(repr(k), repr(v)) for k, v in self.items()] | |
701 | return '{{{}}}'.format(', '.join(items)) | |
81447b5b PP |
702 | |
703 | ||
704 | _TYPE_TO_OBJ = { | |
705 | native_bt.VALUE_TYPE_BOOL: BoolValue, | |
fdd3a2da PP |
706 | native_bt.VALUE_TYPE_UNSIGNED_INTEGER: UnsignedIntegerValue, |
707 | native_bt.VALUE_TYPE_SIGNED_INTEGER: SignedIntegerValue, | |
10a19b49 | 708 | native_bt.VALUE_TYPE_REAL: RealValue, |
81447b5b PP |
709 | native_bt.VALUE_TYPE_STRING: StringValue, |
710 | native_bt.VALUE_TYPE_ARRAY: ArrayValue, | |
711 | native_bt.VALUE_TYPE_MAP: MapValue, | |
712 | } |