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7843261b TJB |
1 | /* Python interface to values. |
2 | ||
32d0add0 | 3 | Copyright (C) 2008-2015 Free Software Foundation, Inc. |
7843261b TJB |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "charset.h" | |
22 | #include "value.h" | |
7843261b TJB |
23 | #include "language.h" |
24 | #include "dfp.h" | |
79a45b7d | 25 | #include "valprint.h" |
5374244e | 26 | #include "infcall.h" |
f9ffd4bb | 27 | #include "expression.h" |
03f17ccf | 28 | #include "cp-abi.h" |
49a8461d | 29 | #include "python.h" |
7843261b | 30 | |
7843261b TJB |
31 | #include "python-internal.h" |
32 | ||
33 | /* Even though Python scalar types directly map to host types, we use | |
b021a221 | 34 | target types here to remain consistent with the values system in |
7843261b TJB |
35 | GDB (which uses target arithmetic). */ |
36 | ||
37 | /* Python's integer type corresponds to C's long type. */ | |
d452c4bc | 38 | #define builtin_type_pyint builtin_type (python_gdbarch)->builtin_long |
7843261b TJB |
39 | |
40 | /* Python's float type corresponds to C's double type. */ | |
d452c4bc | 41 | #define builtin_type_pyfloat builtin_type (python_gdbarch)->builtin_double |
7843261b TJB |
42 | |
43 | /* Python's long type corresponds to C's long long type. */ | |
d452c4bc | 44 | #define builtin_type_pylong builtin_type (python_gdbarch)->builtin_long_long |
7843261b | 45 | |
595939de PM |
46 | /* Python's long type corresponds to C's long long type. Unsigned version. */ |
47 | #define builtin_type_upylong builtin_type \ | |
48 | (python_gdbarch)->builtin_unsigned_long_long | |
49 | ||
7843261b | 50 | #define builtin_type_pybool \ |
d452c4bc | 51 | language_bool_type (python_language, python_gdbarch) |
7843261b | 52 | |
3b7538c0 | 53 | #define builtin_type_pychar \ |
d452c4bc | 54 | language_string_char_type (python_language, python_gdbarch) |
3b7538c0 | 55 | |
4e7a5ef5 | 56 | typedef struct value_object { |
7843261b | 57 | PyObject_HEAD |
4e7a5ef5 TT |
58 | struct value_object *next; |
59 | struct value_object *prev; | |
7843261b | 60 | struct value *value; |
c0c6f777 | 61 | PyObject *address; |
2c74e833 | 62 | PyObject *type; |
03f17ccf | 63 | PyObject *dynamic_type; |
7843261b TJB |
64 | } value_object; |
65 | ||
4e7a5ef5 TT |
66 | /* List of all values which are currently exposed to Python. It is |
67 | maintained so that when an objfile is discarded, preserve_values | |
68 | can copy the values' types if needed. */ | |
69 | /* This variable is unnecessarily initialized to NULL in order to | |
70 | work around a linker bug on MacOS. */ | |
71 | static value_object *values_in_python = NULL; | |
72 | ||
7843261b TJB |
73 | /* Called by the Python interpreter when deallocating a value object. */ |
74 | static void | |
75 | valpy_dealloc (PyObject *obj) | |
76 | { | |
77 | value_object *self = (value_object *) obj; | |
78 | ||
4e7a5ef5 TT |
79 | /* Remove SELF from the global list. */ |
80 | if (self->prev) | |
81 | self->prev->next = self->next; | |
82 | else | |
83 | { | |
84 | gdb_assert (values_in_python == self); | |
85 | values_in_python = self->next; | |
86 | } | |
87 | if (self->next) | |
88 | self->next->prev = self->prev; | |
7843261b | 89 | |
77316f4c | 90 | value_free (self->value); |
c0c6f777 TJB |
91 | |
92 | if (self->address) | |
93 | /* Use braces to appease gcc warning. *sigh* */ | |
94 | { | |
95 | Py_DECREF (self->address); | |
96 | } | |
97 | ||
2c74e833 TT |
98 | if (self->type) |
99 | { | |
100 | Py_DECREF (self->type); | |
101 | } | |
102 | ||
03f17ccf TT |
103 | Py_XDECREF (self->dynamic_type); |
104 | ||
9a27f2c6 | 105 | Py_TYPE (self)->tp_free (self); |
7843261b TJB |
106 | } |
107 | ||
4e7a5ef5 TT |
108 | /* Helper to push a Value object on the global list. */ |
109 | static void | |
110 | note_value (value_object *value_obj) | |
111 | { | |
112 | value_obj->next = values_in_python; | |
113 | if (value_obj->next) | |
114 | value_obj->next->prev = value_obj; | |
115 | value_obj->prev = NULL; | |
116 | values_in_python = value_obj; | |
117 | } | |
118 | ||
8dc78533 JK |
119 | /* Called when a new gdb.Value object needs to be allocated. Returns NULL on |
120 | error, with a python exception set. */ | |
7843261b TJB |
121 | static PyObject * |
122 | valpy_new (PyTypeObject *subtype, PyObject *args, PyObject *keywords) | |
123 | { | |
124 | struct value *value = NULL; /* Initialize to appease gcc warning. */ | |
125 | value_object *value_obj; | |
7843261b TJB |
126 | |
127 | if (PyTuple_Size (args) != 1) | |
128 | { | |
129 | PyErr_SetString (PyExc_TypeError, _("Value object creation takes only " | |
130 | "1 argument")); | |
131 | return NULL; | |
132 | } | |
133 | ||
134 | value_obj = (value_object *) subtype->tp_alloc (subtype, 1); | |
135 | if (value_obj == NULL) | |
136 | { | |
137 | PyErr_SetString (PyExc_MemoryError, _("Could not allocate memory to " | |
138 | "create Value object.")); | |
139 | return NULL; | |
140 | } | |
141 | ||
08c637de TJB |
142 | value = convert_value_from_python (PyTuple_GetItem (args, 0)); |
143 | if (value == NULL) | |
7843261b TJB |
144 | { |
145 | subtype->tp_free (value_obj); | |
08c637de | 146 | return NULL; |
7843261b TJB |
147 | } |
148 | ||
149 | value_obj->value = value; | |
e848a8a5 | 150 | release_value_or_incref (value); |
c0c6f777 | 151 | value_obj->address = NULL; |
2c74e833 | 152 | value_obj->type = NULL; |
03f17ccf | 153 | value_obj->dynamic_type = NULL; |
4e7a5ef5 | 154 | note_value (value_obj); |
7843261b TJB |
155 | |
156 | return (PyObject *) value_obj; | |
157 | } | |
158 | ||
4e7a5ef5 TT |
159 | /* Iterate over all the Value objects, calling preserve_one_value on |
160 | each. */ | |
161 | void | |
6dddc817 DE |
162 | gdbpy_preserve_values (const struct extension_language_defn *extlang, |
163 | struct objfile *objfile, htab_t copied_types) | |
4e7a5ef5 TT |
164 | { |
165 | value_object *iter; | |
166 | ||
167 | for (iter = values_in_python; iter; iter = iter->next) | |
168 | preserve_one_value (iter->value, objfile, copied_types); | |
169 | } | |
170 | ||
7843261b TJB |
171 | /* Given a value of a pointer type, apply the C unary * operator to it. */ |
172 | static PyObject * | |
173 | valpy_dereference (PyObject *self, PyObject *args) | |
174 | { | |
888fe1e1 | 175 | PyObject *result = NULL; |
7843261b | 176 | |
492d29ea | 177 | TRY |
7843261b | 178 | { |
888fe1e1 TT |
179 | struct value *res_val; |
180 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
181 | ||
7843261b | 182 | res_val = value_ind (((value_object *) self)->value); |
888fe1e1 TT |
183 | result = value_to_value_object (res_val); |
184 | do_cleanups (cleanup); | |
7843261b | 185 | } |
492d29ea PA |
186 | CATCH (except, RETURN_MASK_ALL) |
187 | { | |
188 | GDB_PY_HANDLE_EXCEPTION (except); | |
189 | } | |
190 | END_CATCH | |
7843261b | 191 | |
888fe1e1 | 192 | return result; |
7843261b TJB |
193 | } |
194 | ||
7b282c5a SCR |
195 | /* Given a value of a pointer type or a reference type, return the value |
196 | referenced. The difference between this function and valpy_dereference is | |
197 | that the latter applies * unary operator to a value, which need not always | |
198 | result in the value referenced. For example, for a value which is a reference | |
199 | to an 'int' pointer ('int *'), valpy_dereference will result in a value of | |
200 | type 'int' while valpy_referenced_value will result in a value of type | |
201 | 'int *'. */ | |
202 | ||
203 | static PyObject * | |
204 | valpy_referenced_value (PyObject *self, PyObject *args) | |
205 | { | |
7b282c5a SCR |
206 | PyObject *result = NULL; |
207 | ||
492d29ea | 208 | TRY |
7b282c5a SCR |
209 | { |
210 | struct value *self_val, *res_val; | |
211 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
212 | ||
213 | self_val = ((value_object *) self)->value; | |
214 | switch (TYPE_CODE (check_typedef (value_type (self_val)))) | |
215 | { | |
216 | case TYPE_CODE_PTR: | |
217 | res_val = value_ind (self_val); | |
218 | break; | |
219 | case TYPE_CODE_REF: | |
220 | res_val = coerce_ref (self_val); | |
221 | break; | |
222 | default: | |
223 | error(_("Trying to get the referenced value from a value which is " | |
224 | "neither a pointer nor a reference.")); | |
225 | } | |
226 | ||
227 | result = value_to_value_object (res_val); | |
228 | do_cleanups (cleanup); | |
229 | } | |
492d29ea PA |
230 | CATCH (except, RETURN_MASK_ALL) |
231 | { | |
232 | GDB_PY_HANDLE_EXCEPTION (except); | |
233 | } | |
234 | END_CATCH | |
7b282c5a SCR |
235 | |
236 | return result; | |
237 | } | |
238 | ||
4c082a81 SC |
239 | /* Return a value which is a reference to the value. */ |
240 | ||
241 | static PyObject * | |
242 | valpy_reference_value (PyObject *self, PyObject *args) | |
243 | { | |
244 | PyObject *result = NULL; | |
245 | ||
246 | TRY | |
247 | { | |
248 | struct value *self_val; | |
249 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
250 | ||
251 | self_val = ((value_object *) self)->value; | |
252 | result = value_to_value_object (value_ref (self_val)); | |
253 | ||
254 | do_cleanups (cleanup); | |
255 | } | |
256 | CATCH (except, RETURN_MASK_ALL) | |
257 | { | |
258 | GDB_PY_HANDLE_EXCEPTION (except); | |
259 | } | |
260 | END_CATCH | |
261 | ||
262 | return result; | |
263 | } | |
264 | ||
265 | /* Return a "const" qualified version of the value. */ | |
266 | ||
267 | static PyObject * | |
268 | valpy_const_value (PyObject *self, PyObject *args) | |
269 | { | |
270 | PyObject *result = NULL; | |
271 | ||
272 | TRY | |
273 | { | |
274 | struct value *self_val, *res_val; | |
275 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
276 | ||
277 | self_val = ((value_object *) self)->value; | |
278 | res_val = make_cv_value (1, 0, self_val); | |
279 | result = value_to_value_object (res_val); | |
280 | ||
281 | do_cleanups (cleanup); | |
282 | } | |
283 | CATCH (except, RETURN_MASK_ALL) | |
284 | { | |
285 | GDB_PY_HANDLE_EXCEPTION (except); | |
286 | } | |
287 | END_CATCH | |
288 | ||
289 | return result; | |
290 | } | |
291 | ||
08c637de TJB |
292 | /* Return "&value". */ |
293 | static PyObject * | |
c0c6f777 | 294 | valpy_get_address (PyObject *self, void *closure) |
08c637de | 295 | { |
c0c6f777 | 296 | value_object *val_obj = (value_object *) self; |
08c637de | 297 | |
c0c6f777 | 298 | if (!val_obj->address) |
08c637de | 299 | { |
492d29ea | 300 | TRY |
c0c6f777 | 301 | { |
888fe1e1 TT |
302 | struct value *res_val; |
303 | struct cleanup *cleanup | |
304 | = make_cleanup_value_free_to_mark (value_mark ()); | |
305 | ||
c0c6f777 | 306 | res_val = value_addr (val_obj->value); |
888fe1e1 TT |
307 | val_obj->address = value_to_value_object (res_val); |
308 | do_cleanups (cleanup); | |
c0c6f777 | 309 | } |
492d29ea | 310 | CATCH (except, RETURN_MASK_ALL) |
c0c6f777 TJB |
311 | { |
312 | val_obj->address = Py_None; | |
313 | Py_INCREF (Py_None); | |
314 | } | |
492d29ea | 315 | END_CATCH |
08c637de | 316 | } |
08c637de | 317 | |
3fcaed38 | 318 | Py_XINCREF (val_obj->address); |
c0c6f777 TJB |
319 | |
320 | return val_obj->address; | |
08c637de TJB |
321 | } |
322 | ||
2c74e833 TT |
323 | /* Return type of the value. */ |
324 | static PyObject * | |
325 | valpy_get_type (PyObject *self, void *closure) | |
326 | { | |
327 | value_object *obj = (value_object *) self; | |
d59b6f6c | 328 | |
2c74e833 TT |
329 | if (!obj->type) |
330 | { | |
331 | obj->type = type_to_type_object (value_type (obj->value)); | |
332 | if (!obj->type) | |
03f17ccf | 333 | return NULL; |
2c74e833 TT |
334 | } |
335 | Py_INCREF (obj->type); | |
336 | return obj->type; | |
337 | } | |
338 | ||
03f17ccf TT |
339 | /* Return dynamic type of the value. */ |
340 | ||
341 | static PyObject * | |
342 | valpy_get_dynamic_type (PyObject *self, void *closure) | |
343 | { | |
344 | value_object *obj = (value_object *) self; | |
03f17ccf TT |
345 | struct type *type = NULL; |
346 | ||
347 | if (obj->dynamic_type != NULL) | |
348 | { | |
349 | Py_INCREF (obj->dynamic_type); | |
350 | return obj->dynamic_type; | |
351 | } | |
352 | ||
492d29ea | 353 | TRY |
03f17ccf TT |
354 | { |
355 | struct value *val = obj->value; | |
888fe1e1 | 356 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); |
03f17ccf TT |
357 | |
358 | type = value_type (val); | |
f168693b | 359 | type = check_typedef (type); |
03f17ccf TT |
360 | |
361 | if (((TYPE_CODE (type) == TYPE_CODE_PTR) | |
362 | || (TYPE_CODE (type) == TYPE_CODE_REF)) | |
4753d33b | 363 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT)) |
03f17ccf TT |
364 | { |
365 | struct value *target; | |
366 | int was_pointer = TYPE_CODE (type) == TYPE_CODE_PTR; | |
367 | ||
7af389b8 SC |
368 | if (was_pointer) |
369 | target = value_ind (val); | |
370 | else | |
371 | target = coerce_ref (val); | |
03f17ccf TT |
372 | type = value_rtti_type (target, NULL, NULL, NULL); |
373 | ||
374 | if (type) | |
375 | { | |
376 | if (was_pointer) | |
377 | type = lookup_pointer_type (type); | |
378 | else | |
379 | type = lookup_reference_type (type); | |
380 | } | |
381 | } | |
4753d33b | 382 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
03f17ccf TT |
383 | type = value_rtti_type (val, NULL, NULL, NULL); |
384 | else | |
385 | { | |
386 | /* Re-use object's static type. */ | |
387 | type = NULL; | |
388 | } | |
888fe1e1 TT |
389 | |
390 | do_cleanups (cleanup); | |
03f17ccf | 391 | } |
492d29ea PA |
392 | CATCH (except, RETURN_MASK_ALL) |
393 | { | |
394 | GDB_PY_HANDLE_EXCEPTION (except); | |
395 | } | |
396 | END_CATCH | |
03f17ccf TT |
397 | |
398 | if (type == NULL) | |
97b77b39 | 399 | obj->dynamic_type = valpy_get_type (self, NULL); |
03f17ccf TT |
400 | else |
401 | obj->dynamic_type = type_to_type_object (type); | |
402 | ||
97b77b39 | 403 | Py_XINCREF (obj->dynamic_type); |
03f17ccf TT |
404 | return obj->dynamic_type; |
405 | } | |
406 | ||
be759fcf PM |
407 | /* Implementation of gdb.Value.lazy_string ([encoding] [, length]) -> |
408 | string. Return a PyObject representing a lazy_string_object type. | |
409 | A lazy string is a pointer to a string with an optional encoding and | |
410 | length. If ENCODING is not given, encoding is set to None. If an | |
411 | ENCODING is provided the encoding parameter is set to ENCODING, but | |
412 | the string is not encoded. If LENGTH is provided then the length | |
413 | parameter is set to LENGTH, otherwise length will be set to -1 (first | |
414 | null of appropriate with). */ | |
415 | static PyObject * | |
416 | valpy_lazy_string (PyObject *self, PyObject *args, PyObject *kw) | |
417 | { | |
74aedc46 | 418 | gdb_py_longest length = -1; |
be759fcf PM |
419 | struct value *value = ((value_object *) self)->value; |
420 | const char *user_encoding = NULL; | |
421 | static char *keywords[] = { "encoding", "length", NULL }; | |
888fe1e1 | 422 | PyObject *str_obj = NULL; |
be759fcf | 423 | |
74aedc46 | 424 | if (!PyArg_ParseTupleAndKeywords (args, kw, "|s" GDB_PY_LL_ARG, keywords, |
be759fcf PM |
425 | &user_encoding, &length)) |
426 | return NULL; | |
427 | ||
492d29ea | 428 | TRY |
f287c1f3 | 429 | { |
888fe1e1 TT |
430 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); |
431 | ||
f287c1f3 PM |
432 | if (TYPE_CODE (value_type (value)) == TYPE_CODE_PTR) |
433 | value = value_ind (value); | |
888fe1e1 TT |
434 | |
435 | str_obj = gdbpy_create_lazy_string_object (value_address (value), length, | |
436 | user_encoding, | |
437 | value_type (value)); | |
438 | ||
439 | do_cleanups (cleanup); | |
f287c1f3 | 440 | } |
492d29ea PA |
441 | CATCH (except, RETURN_MASK_ALL) |
442 | { | |
443 | GDB_PY_HANDLE_EXCEPTION (except); | |
444 | } | |
445 | END_CATCH | |
be759fcf | 446 | |
888fe1e1 | 447 | return str_obj; |
be759fcf PM |
448 | } |
449 | ||
fbb8f299 PM |
450 | /* Implementation of gdb.Value.string ([encoding] [, errors] |
451 | [, length]) -> string. Return Unicode string with value contents. | |
452 | If ENCODING is not given, the string is assumed to be encoded in | |
453 | the target's charset. If LENGTH is provided, only fetch string to | |
454 | the length provided. */ | |
455 | ||
b6cb8e7d | 456 | static PyObject * |
cc924cad | 457 | valpy_string (PyObject *self, PyObject *args, PyObject *kw) |
b6cb8e7d | 458 | { |
f92adf3c | 459 | int length = -1; |
b6cb8e7d TJB |
460 | gdb_byte *buffer; |
461 | struct value *value = ((value_object *) self)->value; | |
b6cb8e7d TJB |
462 | PyObject *unicode; |
463 | const char *encoding = NULL; | |
464 | const char *errors = NULL; | |
465 | const char *user_encoding = NULL; | |
466 | const char *la_encoding = NULL; | |
96c07c5b | 467 | struct type *char_type; |
31158f0e | 468 | static char *keywords[] = { "encoding", "errors", "length", NULL }; |
b6cb8e7d | 469 | |
fbb8f299 PM |
470 | if (!PyArg_ParseTupleAndKeywords (args, kw, "|ssi", keywords, |
471 | &user_encoding, &errors, &length)) | |
b6cb8e7d TJB |
472 | return NULL; |
473 | ||
492d29ea | 474 | TRY |
b6cb8e7d | 475 | { |
96c07c5b | 476 | LA_GET_STRING (value, &buffer, &length, &char_type, &la_encoding); |
b6cb8e7d | 477 | } |
492d29ea PA |
478 | CATCH (except, RETURN_MASK_ALL) |
479 | { | |
480 | GDB_PY_HANDLE_EXCEPTION (except); | |
481 | } | |
482 | END_CATCH | |
b6cb8e7d TJB |
483 | |
484 | encoding = (user_encoding && *user_encoding) ? user_encoding : la_encoding; | |
89f6d837 PA |
485 | unicode = PyUnicode_Decode ((const char *) buffer, |
486 | length * TYPE_LENGTH (char_type), | |
96c07c5b | 487 | encoding, errors); |
b6cb8e7d TJB |
488 | xfree (buffer); |
489 | ||
490 | return unicode; | |
491 | } | |
492 | ||
f9ffd4bb TT |
493 | /* A helper function that implements the various cast operators. */ |
494 | ||
2c74e833 | 495 | static PyObject * |
f9ffd4bb | 496 | valpy_do_cast (PyObject *self, PyObject *args, enum exp_opcode op) |
2c74e833 | 497 | { |
888fe1e1 | 498 | PyObject *type_obj, *result = NULL; |
2c74e833 | 499 | struct type *type; |
2c74e833 TT |
500 | |
501 | if (! PyArg_ParseTuple (args, "O", &type_obj)) | |
502 | return NULL; | |
503 | ||
504 | type = type_object_to_type (type_obj); | |
505 | if (! type) | |
506 | { | |
256458bc | 507 | PyErr_SetString (PyExc_RuntimeError, |
044c0f87 | 508 | _("Argument must be a type.")); |
2c74e833 TT |
509 | return NULL; |
510 | } | |
511 | ||
492d29ea | 512 | TRY |
2c74e833 | 513 | { |
f9ffd4bb | 514 | struct value *val = ((value_object *) self)->value; |
888fe1e1 TT |
515 | struct value *res_val; |
516 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
f9ffd4bb TT |
517 | |
518 | if (op == UNOP_DYNAMIC_CAST) | |
519 | res_val = value_dynamic_cast (type, val); | |
520 | else if (op == UNOP_REINTERPRET_CAST) | |
521 | res_val = value_reinterpret_cast (type, val); | |
522 | else | |
523 | { | |
524 | gdb_assert (op == UNOP_CAST); | |
525 | res_val = value_cast (type, val); | |
526 | } | |
888fe1e1 TT |
527 | |
528 | result = value_to_value_object (res_val); | |
529 | do_cleanups (cleanup); | |
2c74e833 | 530 | } |
492d29ea PA |
531 | CATCH (except, RETURN_MASK_ALL) |
532 | { | |
533 | GDB_PY_HANDLE_EXCEPTION (except); | |
534 | } | |
535 | END_CATCH | |
2c74e833 | 536 | |
888fe1e1 | 537 | return result; |
2c74e833 TT |
538 | } |
539 | ||
f9ffd4bb TT |
540 | /* Implementation of the "cast" method. */ |
541 | ||
542 | static PyObject * | |
543 | valpy_cast (PyObject *self, PyObject *args) | |
544 | { | |
545 | return valpy_do_cast (self, args, UNOP_CAST); | |
546 | } | |
547 | ||
548 | /* Implementation of the "dynamic_cast" method. */ | |
549 | ||
550 | static PyObject * | |
551 | valpy_dynamic_cast (PyObject *self, PyObject *args) | |
552 | { | |
553 | return valpy_do_cast (self, args, UNOP_DYNAMIC_CAST); | |
554 | } | |
555 | ||
556 | /* Implementation of the "reinterpret_cast" method. */ | |
557 | ||
558 | static PyObject * | |
559 | valpy_reinterpret_cast (PyObject *self, PyObject *args) | |
560 | { | |
561 | return valpy_do_cast (self, args, UNOP_REINTERPRET_CAST); | |
562 | } | |
563 | ||
7843261b TJB |
564 | static Py_ssize_t |
565 | valpy_length (PyObject *self) | |
566 | { | |
567 | /* We don't support getting the number of elements in a struct / class. */ | |
568 | PyErr_SetString (PyExc_NotImplementedError, | |
044c0f87 | 569 | _("Invalid operation on gdb.Value.")); |
7843261b TJB |
570 | return -1; |
571 | } | |
572 | ||
a16b0e22 SC |
573 | /* Return 1 if the gdb.Field object FIELD is present in the value V. |
574 | Returns 0 otherwise. If any Python error occurs, -1 is returned. */ | |
575 | ||
576 | static int | |
577 | value_has_field (struct value *v, PyObject *field) | |
578 | { | |
579 | struct type *parent_type, *val_type; | |
580 | enum type_code type_code; | |
581 | PyObject *type_object = PyObject_GetAttrString (field, "parent_type"); | |
a16b0e22 SC |
582 | int has_field = 0; |
583 | ||
584 | if (type_object == NULL) | |
585 | return -1; | |
586 | ||
587 | parent_type = type_object_to_type (type_object); | |
588 | Py_DECREF (type_object); | |
589 | if (parent_type == NULL) | |
590 | { | |
591 | PyErr_SetString (PyExc_TypeError, | |
592 | _("'parent_type' attribute of gdb.Field object is not a" | |
593 | "gdb.Type object.")); | |
594 | return -1; | |
595 | } | |
596 | ||
492d29ea | 597 | TRY |
a16b0e22 SC |
598 | { |
599 | val_type = value_type (v); | |
600 | val_type = check_typedef (val_type); | |
601 | if (TYPE_CODE (val_type) == TYPE_CODE_REF | |
602 | || TYPE_CODE (val_type) == TYPE_CODE_PTR) | |
603 | val_type = check_typedef (TYPE_TARGET_TYPE (val_type)); | |
604 | ||
605 | type_code = TYPE_CODE (val_type); | |
606 | if ((type_code == TYPE_CODE_STRUCT || type_code == TYPE_CODE_UNION) | |
607 | && types_equal (val_type, parent_type)) | |
608 | has_field = 1; | |
609 | else | |
610 | has_field = 0; | |
611 | } | |
492d29ea PA |
612 | CATCH (except, RETURN_MASK_ALL) |
613 | { | |
614 | GDB_PY_SET_HANDLE_EXCEPTION (except); | |
615 | } | |
616 | END_CATCH | |
a16b0e22 SC |
617 | |
618 | return has_field; | |
619 | } | |
620 | ||
621 | /* Return the value of a flag FLAG_NAME in a gdb.Field object FIELD. | |
622 | Returns 1 if the flag value is true, 0 if it is false, and -1 if | |
623 | a Python error occurs. */ | |
624 | ||
625 | static int | |
626 | get_field_flag (PyObject *field, const char *flag_name) | |
627 | { | |
628 | int flag_value; | |
5a6c7709 | 629 | PyObject *flag_object = PyObject_GetAttrString (field, flag_name); |
a16b0e22 SC |
630 | |
631 | if (flag_object == NULL) | |
632 | return -1; | |
633 | ||
634 | flag_value = PyObject_IsTrue (flag_object); | |
635 | Py_DECREF (flag_object); | |
636 | ||
637 | return flag_value; | |
638 | } | |
639 | ||
b5b08fb4 SC |
640 | /* Return the "type" attribute of a gdb.Field object. |
641 | Returns NULL on error, with a Python exception set. */ | |
642 | ||
643 | static struct type * | |
644 | get_field_type (PyObject *field) | |
645 | { | |
646 | PyObject *ftype_obj = PyObject_GetAttrString (field, "type"); | |
647 | struct type *ftype; | |
648 | ||
649 | if (ftype_obj == NULL) | |
650 | return NULL; | |
651 | ftype = type_object_to_type (ftype_obj); | |
652 | Py_DECREF (ftype_obj); | |
653 | if (ftype == NULL) | |
bf7105a4 JB |
654 | PyErr_SetString (PyExc_TypeError, |
655 | _("'type' attribute of gdb.Field object is not a " | |
656 | "gdb.Type object.")); | |
b5b08fb4 SC |
657 | |
658 | return ftype; | |
659 | } | |
660 | ||
a16b0e22 SC |
661 | /* Given string name or a gdb.Field object corresponding to an element inside |
662 | a structure, return its value object. Returns NULL on error, with a python | |
663 | exception set. */ | |
664 | ||
7843261b TJB |
665 | static PyObject * |
666 | valpy_getitem (PyObject *self, PyObject *key) | |
667 | { | |
492d29ea | 668 | struct gdb_exception except = exception_none; |
7843261b | 669 | value_object *self_value = (value_object *) self; |
08c637de | 670 | char *field = NULL; |
b5b08fb4 SC |
671 | struct type *base_class_type = NULL, *field_type = NULL; |
672 | long bitpos = -1; | |
888fe1e1 | 673 | PyObject *result = NULL; |
7843261b | 674 | |
08c637de | 675 | if (gdbpy_is_string (key)) |
256458bc | 676 | { |
08c637de TJB |
677 | field = python_string_to_host_string (key); |
678 | if (field == NULL) | |
679 | return NULL; | |
680 | } | |
a16b0e22 SC |
681 | else if (gdbpy_is_field (key)) |
682 | { | |
683 | int is_base_class, valid_field; | |
684 | ||
685 | valid_field = value_has_field (self_value->value, key); | |
686 | if (valid_field < 0) | |
687 | return NULL; | |
688 | else if (valid_field == 0) | |
689 | { | |
690 | PyErr_SetString (PyExc_TypeError, | |
691 | _("Invalid lookup for a field not contained in " | |
692 | "the value.")); | |
693 | ||
694 | return NULL; | |
695 | } | |
696 | ||
697 | is_base_class = get_field_flag (key, "is_base_class"); | |
698 | if (is_base_class < 0) | |
699 | return NULL; | |
700 | else if (is_base_class > 0) | |
701 | { | |
b5b08fb4 SC |
702 | base_class_type = get_field_type (key); |
703 | if (base_class_type == NULL) | |
a16b0e22 SC |
704 | return NULL; |
705 | } | |
706 | else | |
707 | { | |
708 | PyObject *name_obj = PyObject_GetAttrString (key, "name"); | |
709 | ||
710 | if (name_obj == NULL) | |
711 | return NULL; | |
712 | ||
b5b08fb4 SC |
713 | if (name_obj != Py_None) |
714 | { | |
715 | field = python_string_to_host_string (name_obj); | |
716 | Py_DECREF (name_obj); | |
717 | if (field == NULL) | |
718 | return NULL; | |
719 | } | |
720 | else | |
721 | { | |
722 | PyObject *bitpos_obj; | |
723 | int valid; | |
724 | ||
725 | Py_DECREF (name_obj); | |
726 | ||
727 | if (!PyObject_HasAttrString (key, "bitpos")) | |
728 | { | |
729 | PyErr_SetString (PyExc_AttributeError, | |
730 | _("gdb.Field object has no name and no " | |
731 | "'bitpos' attribute.")); | |
732 | ||
733 | return NULL; | |
734 | } | |
735 | bitpos_obj = PyObject_GetAttrString (key, "bitpos"); | |
736 | if (bitpos_obj == NULL) | |
737 | return NULL; | |
738 | valid = gdb_py_int_as_long (bitpos_obj, &bitpos); | |
739 | Py_DECREF (bitpos_obj); | |
740 | if (!valid) | |
741 | return NULL; | |
742 | ||
743 | field_type = get_field_type (key); | |
744 | if (field_type == NULL) | |
745 | return NULL; | |
746 | } | |
a16b0e22 SC |
747 | } |
748 | } | |
7843261b | 749 | |
492d29ea | 750 | TRY |
7843261b | 751 | { |
3c0ed299 | 752 | struct value *tmp = self_value->value; |
888fe1e1 TT |
753 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); |
754 | struct value *res_val = NULL; | |
08c637de TJB |
755 | |
756 | if (field) | |
757 | res_val = value_struct_elt (&tmp, NULL, field, 0, NULL); | |
b5b08fb4 SC |
758 | else if (bitpos >= 0) |
759 | res_val = value_struct_elt_bitpos (&tmp, bitpos, field_type, | |
760 | "struct/class/union"); | |
761 | else if (base_class_type != NULL) | |
a16b0e22 | 762 | { |
b5b08fb4 | 763 | struct type *val_type; |
a16b0e22 SC |
764 | |
765 | val_type = check_typedef (value_type (tmp)); | |
766 | if (TYPE_CODE (val_type) == TYPE_CODE_PTR) | |
767 | res_val = value_cast (lookup_pointer_type (base_class_type), tmp); | |
768 | else if (TYPE_CODE (val_type) == TYPE_CODE_REF) | |
769 | res_val = value_cast (lookup_reference_type (base_class_type), tmp); | |
770 | else | |
771 | res_val = value_cast (base_class_type, tmp); | |
772 | } | |
08c637de TJB |
773 | else |
774 | { | |
775 | /* Assume we are attempting an array access, and let the | |
776 | value code throw an exception if the index has an invalid | |
777 | type. */ | |
778 | struct value *idx = convert_value_from_python (key); | |
d59b6f6c | 779 | |
570e2b1a | 780 | if (idx != NULL) |
2e4d963f PM |
781 | { |
782 | /* Check the value's type is something that can be accessed via | |
783 | a subscript. */ | |
784 | struct type *type; | |
d59b6f6c | 785 | |
2e4d963f PM |
786 | tmp = coerce_ref (tmp); |
787 | type = check_typedef (value_type (tmp)); | |
788 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY | |
789 | && TYPE_CODE (type) != TYPE_CODE_PTR) | |
e10abd8f | 790 | error (_("Cannot subscript requested type.")); |
2e4d963f PM |
791 | else |
792 | res_val = value_subscript (tmp, value_as_long (idx)); | |
793 | } | |
08c637de | 794 | } |
888fe1e1 TT |
795 | |
796 | if (res_val) | |
797 | result = value_to_value_object (res_val); | |
798 | do_cleanups (cleanup); | |
7843261b | 799 | } |
492d29ea PA |
800 | CATCH (ex, RETURN_MASK_ALL) |
801 | { | |
802 | except = ex; | |
803 | } | |
804 | END_CATCH | |
570e2b1a | 805 | |
06878dd2 | 806 | xfree (field); |
7843261b TJB |
807 | GDB_PY_HANDLE_EXCEPTION (except); |
808 | ||
888fe1e1 | 809 | return result; |
7843261b TJB |
810 | } |
811 | ||
812 | static int | |
813 | valpy_setitem (PyObject *self, PyObject *key, PyObject *value) | |
814 | { | |
815 | PyErr_Format (PyExc_NotImplementedError, | |
816 | _("Setting of struct elements is not currently supported.")); | |
817 | return -1; | |
818 | } | |
819 | ||
5374244e | 820 | /* Called by the Python interpreter to perform an inferior function |
8dc78533 | 821 | call on the value. Returns NULL on error, with a python exception set. */ |
5374244e PM |
822 | static PyObject * |
823 | valpy_call (PyObject *self, PyObject *args, PyObject *keywords) | |
824 | { | |
5374244e | 825 | Py_ssize_t args_count; |
5374244e PM |
826 | struct value *function = ((value_object *) self)->value; |
827 | struct value **vargs = NULL; | |
749fd4ea | 828 | struct type *ftype = NULL; |
888fe1e1 TT |
829 | struct value *mark = value_mark (); |
830 | PyObject *result = NULL; | |
f287c1f3 | 831 | |
492d29ea | 832 | TRY |
f287c1f3 PM |
833 | { |
834 | ftype = check_typedef (value_type (function)); | |
835 | } | |
492d29ea PA |
836 | CATCH (except, RETURN_MASK_ALL) |
837 | { | |
838 | GDB_PY_HANDLE_EXCEPTION (except); | |
839 | } | |
840 | END_CATCH | |
5374244e PM |
841 | |
842 | if (TYPE_CODE (ftype) != TYPE_CODE_FUNC) | |
843 | { | |
844 | PyErr_SetString (PyExc_RuntimeError, | |
845 | _("Value is not callable (not TYPE_CODE_FUNC).")); | |
846 | return NULL; | |
847 | } | |
848 | ||
f287c1f3 PM |
849 | if (! PyTuple_Check (args)) |
850 | { | |
851 | PyErr_SetString (PyExc_TypeError, | |
852 | _("Inferior arguments must be provided in a tuple.")); | |
853 | return NULL; | |
854 | } | |
855 | ||
5374244e PM |
856 | args_count = PyTuple_Size (args); |
857 | if (args_count > 0) | |
858 | { | |
859 | int i; | |
860 | ||
8d749320 | 861 | vargs = XALLOCAVEC (struct value *, args_count); |
5374244e PM |
862 | for (i = 0; i < args_count; i++) |
863 | { | |
864 | PyObject *item = PyTuple_GetItem (args, i); | |
865 | ||
866 | if (item == NULL) | |
867 | return NULL; | |
868 | ||
869 | vargs[i] = convert_value_from_python (item); | |
870 | if (vargs[i] == NULL) | |
871 | return NULL; | |
872 | } | |
873 | } | |
874 | ||
492d29ea | 875 | TRY |
5374244e | 876 | { |
888fe1e1 TT |
877 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (mark); |
878 | struct value *return_value; | |
879 | ||
5374244e | 880 | return_value = call_function_by_hand (function, args_count, vargs); |
888fe1e1 TT |
881 | result = value_to_value_object (return_value); |
882 | do_cleanups (cleanup); | |
5374244e | 883 | } |
492d29ea PA |
884 | CATCH (except, RETURN_MASK_ALL) |
885 | { | |
886 | GDB_PY_HANDLE_EXCEPTION (except); | |
887 | } | |
888 | END_CATCH | |
5374244e | 889 | |
888fe1e1 | 890 | return result; |
5374244e PM |
891 | } |
892 | ||
7843261b TJB |
893 | /* Called by the Python interpreter to obtain string representation |
894 | of the object. */ | |
895 | static PyObject * | |
896 | valpy_str (PyObject *self) | |
897 | { | |
898 | char *s = NULL; | |
7843261b | 899 | PyObject *result; |
79a45b7d | 900 | struct value_print_options opts; |
7843261b | 901 | |
79a45b7d TT |
902 | get_user_print_options (&opts); |
903 | opts.deref_ref = 0; | |
904 | ||
492d29ea | 905 | TRY |
7843261b | 906 | { |
5fe41fbf TT |
907 | struct ui_file *stb = mem_fileopen (); |
908 | struct cleanup *old_chain = make_cleanup_ui_file_delete (stb); | |
909 | ||
79a45b7d | 910 | common_val_print (((value_object *) self)->value, stb, 0, |
d452c4bc | 911 | &opts, python_language); |
759ef836 | 912 | s = ui_file_xstrdup (stb, NULL); |
5fe41fbf TT |
913 | |
914 | do_cleanups (old_chain); | |
7843261b | 915 | } |
492d29ea PA |
916 | CATCH (except, RETURN_MASK_ALL) |
917 | { | |
918 | GDB_PY_HANDLE_EXCEPTION (except); | |
919 | } | |
920 | END_CATCH | |
7843261b | 921 | |
7843261b TJB |
922 | result = PyUnicode_Decode (s, strlen (s), host_charset (), NULL); |
923 | xfree (s); | |
924 | ||
925 | return result; | |
926 | } | |
927 | ||
def2b000 TJB |
928 | /* Implements gdb.Value.is_optimized_out. */ |
929 | static PyObject * | |
930 | valpy_get_is_optimized_out (PyObject *self, void *closure) | |
931 | { | |
932 | struct value *value = ((value_object *) self)->value; | |
f287c1f3 | 933 | int opt = 0; |
def2b000 | 934 | |
492d29ea | 935 | TRY |
f287c1f3 PM |
936 | { |
937 | opt = value_optimized_out (value); | |
938 | } | |
492d29ea PA |
939 | CATCH (except, RETURN_MASK_ALL) |
940 | { | |
941 | GDB_PY_HANDLE_EXCEPTION (except); | |
942 | } | |
943 | END_CATCH | |
f287c1f3 PM |
944 | |
945 | if (opt) | |
def2b000 TJB |
946 | Py_RETURN_TRUE; |
947 | ||
948 | Py_RETURN_FALSE; | |
949 | } | |
950 | ||
913460fc PK |
951 | /* Implements gdb.Value.is_lazy. */ |
952 | static PyObject * | |
953 | valpy_get_is_lazy (PyObject *self, void *closure) | |
954 | { | |
955 | struct value *value = ((value_object *) self)->value; | |
956 | int opt = 0; | |
913460fc | 957 | |
492d29ea | 958 | TRY |
913460fc PK |
959 | { |
960 | opt = value_lazy (value); | |
961 | } | |
492d29ea PA |
962 | CATCH (except, RETURN_MASK_ALL) |
963 | { | |
964 | GDB_PY_HANDLE_EXCEPTION (except); | |
965 | } | |
966 | END_CATCH | |
913460fc PK |
967 | |
968 | if (opt) | |
969 | Py_RETURN_TRUE; | |
970 | ||
971 | Py_RETURN_FALSE; | |
972 | } | |
973 | ||
974 | /* Implements gdb.Value.fetch_lazy (). */ | |
975 | static PyObject * | |
976 | valpy_fetch_lazy (PyObject *self, PyObject *args) | |
977 | { | |
978 | struct value *value = ((value_object *) self)->value; | |
913460fc | 979 | |
492d29ea | 980 | TRY |
913460fc PK |
981 | { |
982 | if (value_lazy (value)) | |
983 | value_fetch_lazy (value); | |
984 | } | |
492d29ea PA |
985 | CATCH (except, RETURN_MASK_ALL) |
986 | { | |
987 | GDB_PY_HANDLE_EXCEPTION (except); | |
988 | } | |
989 | END_CATCH | |
913460fc PK |
990 | |
991 | Py_RETURN_NONE; | |
992 | } | |
993 | ||
88d4aea7 PM |
994 | /* Calculate and return the address of the PyObject as the value of |
995 | the builtin __hash__ call. */ | |
881d5d5d | 996 | static Py_hash_t |
88d4aea7 PM |
997 | valpy_hash (PyObject *self) |
998 | { | |
881d5d5d | 999 | return (intptr_t) self; |
88d4aea7 PM |
1000 | } |
1001 | ||
7843261b TJB |
1002 | enum valpy_opcode |
1003 | { | |
1004 | VALPY_ADD, | |
1005 | VALPY_SUB, | |
1006 | VALPY_MUL, | |
1007 | VALPY_DIV, | |
1008 | VALPY_REM, | |
08c637de TJB |
1009 | VALPY_POW, |
1010 | VALPY_LSH, | |
1011 | VALPY_RSH, | |
1012 | VALPY_BITAND, | |
1013 | VALPY_BITOR, | |
1014 | VALPY_BITXOR | |
7843261b TJB |
1015 | }; |
1016 | ||
1017 | /* If TYPE is a reference, return the target; otherwise return TYPE. */ | |
1018 | #define STRIP_REFERENCE(TYPE) \ | |
1019 | ((TYPE_CODE (TYPE) == TYPE_CODE_REF) ? (TYPE_TARGET_TYPE (TYPE)) : (TYPE)) | |
1020 | ||
9c6595ab PA |
1021 | /* Helper for valpy_binop. Returns a value object which is the result |
1022 | of applying the operation specified by OPCODE to the given | |
1023 | arguments. Throws a GDB exception on error. */ | |
1024 | ||
7843261b | 1025 | static PyObject * |
9c6595ab | 1026 | valpy_binop_throw (enum valpy_opcode opcode, PyObject *self, PyObject *other) |
7843261b | 1027 | { |
888fe1e1 | 1028 | PyObject *result = NULL; |
7843261b | 1029 | |
9c6595ab PA |
1030 | struct value *arg1, *arg2; |
1031 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
1032 | struct value *res_val = NULL; | |
1033 | enum exp_opcode op = OP_NULL; | |
1034 | int handled = 0; | |
1035 | ||
1036 | /* If the gdb.Value object is the second operand, then it will be | |
1037 | passed to us as the OTHER argument, and SELF will be an entirely | |
1038 | different kind of object, altogether. Because of this, we can't | |
1039 | assume self is a gdb.Value object and need to convert it from | |
1040 | python as well. */ | |
1041 | arg1 = convert_value_from_python (self); | |
1042 | if (arg1 == NULL) | |
7843261b | 1043 | { |
9c6595ab PA |
1044 | do_cleanups (cleanup); |
1045 | return NULL; | |
1046 | } | |
08c637de | 1047 | |
9c6595ab PA |
1048 | arg2 = convert_value_from_python (other); |
1049 | if (arg2 == NULL) | |
1050 | { | |
1051 | do_cleanups (cleanup); | |
1052 | return NULL; | |
1053 | } | |
7843261b | 1054 | |
9c6595ab PA |
1055 | switch (opcode) |
1056 | { | |
1057 | case VALPY_ADD: | |
1058 | { | |
1059 | struct type *ltype = value_type (arg1); | |
1060 | struct type *rtype = value_type (arg2); | |
1061 | ||
1062 | ltype = check_typedef (ltype); | |
1063 | ltype = STRIP_REFERENCE (ltype); | |
1064 | rtype = check_typedef (rtype); | |
1065 | rtype = STRIP_REFERENCE (rtype); | |
1066 | ||
1067 | handled = 1; | |
1068 | if (TYPE_CODE (ltype) == TYPE_CODE_PTR | |
1069 | && is_integral_type (rtype)) | |
1070 | res_val = value_ptradd (arg1, value_as_long (arg2)); | |
1071 | else if (TYPE_CODE (rtype) == TYPE_CODE_PTR | |
1072 | && is_integral_type (ltype)) | |
1073 | res_val = value_ptradd (arg2, value_as_long (arg1)); | |
1074 | else | |
7843261b | 1075 | { |
9c6595ab PA |
1076 | handled = 0; |
1077 | op = BINOP_ADD; | |
7843261b | 1078 | } |
9c6595ab PA |
1079 | } |
1080 | break; | |
1081 | case VALPY_SUB: | |
1082 | { | |
1083 | struct type *ltype = value_type (arg1); | |
1084 | struct type *rtype = value_type (arg2); | |
1085 | ||
1086 | ltype = check_typedef (ltype); | |
1087 | ltype = STRIP_REFERENCE (ltype); | |
1088 | rtype = check_typedef (rtype); | |
1089 | rtype = STRIP_REFERENCE (rtype); | |
1090 | ||
1091 | handled = 1; | |
1092 | if (TYPE_CODE (ltype) == TYPE_CODE_PTR | |
1093 | && TYPE_CODE (rtype) == TYPE_CODE_PTR) | |
1094 | /* A ptrdiff_t for the target would be preferable here. */ | |
1095 | res_val = value_from_longest (builtin_type_pyint, | |
1096 | value_ptrdiff (arg1, arg2)); | |
1097 | else if (TYPE_CODE (ltype) == TYPE_CODE_PTR | |
1098 | && is_integral_type (rtype)) | |
1099 | res_val = value_ptradd (arg1, - value_as_long (arg2)); | |
1100 | else | |
7843261b | 1101 | { |
9c6595ab PA |
1102 | handled = 0; |
1103 | op = BINOP_SUB; | |
7843261b | 1104 | } |
9c6595ab PA |
1105 | } |
1106 | break; | |
1107 | case VALPY_MUL: | |
1108 | op = BINOP_MUL; | |
1109 | break; | |
1110 | case VALPY_DIV: | |
1111 | op = BINOP_DIV; | |
1112 | break; | |
1113 | case VALPY_REM: | |
1114 | op = BINOP_REM; | |
1115 | break; | |
1116 | case VALPY_POW: | |
1117 | op = BINOP_EXP; | |
1118 | break; | |
1119 | case VALPY_LSH: | |
1120 | op = BINOP_LSH; | |
1121 | break; | |
1122 | case VALPY_RSH: | |
1123 | op = BINOP_RSH; | |
1124 | break; | |
1125 | case VALPY_BITAND: | |
1126 | op = BINOP_BITWISE_AND; | |
1127 | break; | |
1128 | case VALPY_BITOR: | |
1129 | op = BINOP_BITWISE_IOR; | |
1130 | break; | |
1131 | case VALPY_BITXOR: | |
1132 | op = BINOP_BITWISE_XOR; | |
1133 | break; | |
1134 | } | |
888fe1e1 | 1135 | |
9c6595ab PA |
1136 | if (!handled) |
1137 | { | |
1138 | if (binop_user_defined_p (op, arg1, arg2)) | |
1139 | res_val = value_x_binop (arg1, arg2, op, OP_NULL, EVAL_NORMAL); | |
1140 | else | |
1141 | res_val = value_binop (arg1, arg2, op); | |
1142 | } | |
f7bd0f78 | 1143 | |
9c6595ab PA |
1144 | if (res_val) |
1145 | result = value_to_value_object (res_val); | |
888fe1e1 | 1146 | |
9c6595ab PA |
1147 | do_cleanups (cleanup); |
1148 | return result; | |
1149 | } | |
1150 | ||
1151 | /* Returns a value object which is the result of applying the operation | |
1152 | specified by OPCODE to the given arguments. Returns NULL on error, with | |
1153 | a python exception set. */ | |
1154 | static PyObject * | |
1155 | valpy_binop (enum valpy_opcode opcode, PyObject *self, PyObject *other) | |
1156 | { | |
1157 | PyObject *result = NULL; | |
1158 | ||
1159 | TRY | |
1160 | { | |
1161 | result = valpy_binop_throw (opcode, self, other); | |
7843261b | 1162 | } |
492d29ea PA |
1163 | CATCH (except, RETURN_MASK_ALL) |
1164 | { | |
1165 | GDB_PY_HANDLE_EXCEPTION (except); | |
1166 | } | |
1167 | END_CATCH | |
7843261b | 1168 | |
888fe1e1 | 1169 | return result; |
7843261b TJB |
1170 | } |
1171 | ||
1172 | static PyObject * | |
1173 | valpy_add (PyObject *self, PyObject *other) | |
1174 | { | |
1175 | return valpy_binop (VALPY_ADD, self, other); | |
1176 | } | |
1177 | ||
1178 | static PyObject * | |
1179 | valpy_subtract (PyObject *self, PyObject *other) | |
1180 | { | |
1181 | return valpy_binop (VALPY_SUB, self, other); | |
1182 | } | |
1183 | ||
1184 | static PyObject * | |
1185 | valpy_multiply (PyObject *self, PyObject *other) | |
1186 | { | |
1187 | return valpy_binop (VALPY_MUL, self, other); | |
1188 | } | |
1189 | ||
1190 | static PyObject * | |
1191 | valpy_divide (PyObject *self, PyObject *other) | |
1192 | { | |
1193 | return valpy_binop (VALPY_DIV, self, other); | |
1194 | } | |
1195 | ||
1196 | static PyObject * | |
1197 | valpy_remainder (PyObject *self, PyObject *other) | |
1198 | { | |
1199 | return valpy_binop (VALPY_REM, self, other); | |
1200 | } | |
1201 | ||
1202 | static PyObject * | |
1203 | valpy_power (PyObject *self, PyObject *other, PyObject *unused) | |
1204 | { | |
1205 | /* We don't support the ternary form of pow. I don't know how to express | |
1206 | that, so let's just throw NotImplementedError to at least do something | |
1207 | about it. */ | |
1208 | if (unused != Py_None) | |
1209 | { | |
1210 | PyErr_SetString (PyExc_NotImplementedError, | |
1211 | "Invalid operation on gdb.Value."); | |
1212 | return NULL; | |
1213 | } | |
1214 | ||
1215 | return valpy_binop (VALPY_POW, self, other); | |
1216 | } | |
1217 | ||
1218 | static PyObject * | |
1219 | valpy_negative (PyObject *self) | |
1220 | { | |
888fe1e1 | 1221 | PyObject *result = NULL; |
7843261b | 1222 | |
492d29ea | 1223 | TRY |
7843261b | 1224 | { |
888fe1e1 TT |
1225 | /* Perhaps overkill, but consistency has some virtue. */ |
1226 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
1227 | struct value *val; | |
1228 | ||
7843261b | 1229 | val = value_neg (((value_object *) self)->value); |
888fe1e1 TT |
1230 | result = value_to_value_object (val); |
1231 | do_cleanups (cleanup); | |
7843261b | 1232 | } |
492d29ea PA |
1233 | CATCH (except, RETURN_MASK_ALL) |
1234 | { | |
1235 | GDB_PY_HANDLE_EXCEPTION (except); | |
1236 | } | |
1237 | END_CATCH | |
7843261b | 1238 | |
888fe1e1 | 1239 | return result; |
7843261b TJB |
1240 | } |
1241 | ||
1242 | static PyObject * | |
1243 | valpy_positive (PyObject *self) | |
1244 | { | |
4e7a5ef5 | 1245 | return value_to_value_object (((value_object *) self)->value); |
7843261b TJB |
1246 | } |
1247 | ||
1248 | static PyObject * | |
1249 | valpy_absolute (PyObject *self) | |
1250 | { | |
22601c15 | 1251 | struct value *value = ((value_object *) self)->value; |
f287c1f3 | 1252 | int isabs = 1; |
d59b6f6c | 1253 | |
492d29ea | 1254 | TRY |
f287c1f3 | 1255 | { |
888fe1e1 TT |
1256 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); |
1257 | ||
f287c1f3 PM |
1258 | if (value_less (value, value_zero (value_type (value), not_lval))) |
1259 | isabs = 0; | |
888fe1e1 TT |
1260 | |
1261 | do_cleanups (cleanup); | |
f287c1f3 | 1262 | } |
492d29ea PA |
1263 | CATCH (except, RETURN_MASK_ALL) |
1264 | { | |
1265 | GDB_PY_HANDLE_EXCEPTION (except); | |
1266 | } | |
1267 | END_CATCH | |
f287c1f3 PM |
1268 | |
1269 | if (isabs) | |
7843261b | 1270 | return valpy_positive (self); |
f287c1f3 PM |
1271 | else |
1272 | return valpy_negative (self); | |
7843261b TJB |
1273 | } |
1274 | ||
1275 | /* Implements boolean evaluation of gdb.Value. */ | |
1276 | static int | |
1277 | valpy_nonzero (PyObject *self) | |
1278 | { | |
492d29ea | 1279 | struct gdb_exception except = exception_none; |
7843261b TJB |
1280 | value_object *self_value = (value_object *) self; |
1281 | struct type *type; | |
f287c1f3 | 1282 | int nonzero = 0; /* Appease GCC warning. */ |
7843261b | 1283 | |
492d29ea | 1284 | TRY |
f287c1f3 | 1285 | { |
5d9c5995 PM |
1286 | type = check_typedef (value_type (self_value->value)); |
1287 | ||
f287c1f3 PM |
1288 | if (is_integral_type (type) || TYPE_CODE (type) == TYPE_CODE_PTR) |
1289 | nonzero = !!value_as_long (self_value->value); | |
1290 | else if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
1291 | nonzero = value_as_double (self_value->value) != 0; | |
1292 | else if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT) | |
1293 | nonzero = !decimal_is_zero (value_contents (self_value->value), | |
1294 | TYPE_LENGTH (type), | |
1295 | gdbarch_byte_order (get_type_arch (type))); | |
1296 | else | |
1297 | /* All other values are True. */ | |
1298 | nonzero = 1; | |
1299 | } | |
492d29ea PA |
1300 | CATCH (ex, RETURN_MASK_ALL) |
1301 | { | |
1302 | except = ex; | |
1303 | } | |
1304 | END_CATCH | |
1305 | ||
f287c1f3 PM |
1306 | /* This is not documented in the Python documentation, but if this |
1307 | function fails, return -1 as slot_nb_nonzero does (the default | |
1308 | Python nonzero function). */ | |
1309 | GDB_PY_SET_HANDLE_EXCEPTION (except); | |
1310 | ||
1311 | return nonzero; | |
7843261b TJB |
1312 | } |
1313 | ||
08c637de | 1314 | /* Implements ~ for value objects. */ |
7843261b | 1315 | static PyObject * |
08c637de | 1316 | valpy_invert (PyObject *self) |
7843261b | 1317 | { |
08c637de | 1318 | struct value *val = NULL; |
7843261b | 1319 | |
492d29ea | 1320 | TRY |
7843261b | 1321 | { |
08c637de TJB |
1322 | val = value_complement (((value_object *) self)->value); |
1323 | } | |
492d29ea PA |
1324 | CATCH (except, RETURN_MASK_ALL) |
1325 | { | |
1326 | GDB_PY_HANDLE_EXCEPTION (except); | |
1327 | } | |
1328 | END_CATCH | |
7843261b | 1329 | |
08c637de TJB |
1330 | return value_to_value_object (val); |
1331 | } | |
7843261b | 1332 | |
08c637de TJB |
1333 | /* Implements left shift for value objects. */ |
1334 | static PyObject * | |
1335 | valpy_lsh (PyObject *self, PyObject *other) | |
1336 | { | |
1337 | return valpy_binop (VALPY_LSH, self, other); | |
1338 | } | |
7843261b | 1339 | |
08c637de TJB |
1340 | /* Implements right shift for value objects. */ |
1341 | static PyObject * | |
1342 | valpy_rsh (PyObject *self, PyObject *other) | |
1343 | { | |
1344 | return valpy_binop (VALPY_RSH, self, other); | |
1345 | } | |
7843261b | 1346 | |
08c637de TJB |
1347 | /* Implements bitwise and for value objects. */ |
1348 | static PyObject * | |
1349 | valpy_and (PyObject *self, PyObject *other) | |
1350 | { | |
1351 | return valpy_binop (VALPY_BITAND, self, other); | |
1352 | } | |
7843261b | 1353 | |
08c637de TJB |
1354 | /* Implements bitwise or for value objects. */ |
1355 | static PyObject * | |
1356 | valpy_or (PyObject *self, PyObject *other) | |
1357 | { | |
1358 | return valpy_binop (VALPY_BITOR, self, other); | |
1359 | } | |
1360 | ||
1361 | /* Implements bitwise xor for value objects. */ | |
1362 | static PyObject * | |
1363 | valpy_xor (PyObject *self, PyObject *other) | |
1364 | { | |
1365 | return valpy_binop (VALPY_BITXOR, self, other); | |
1366 | } | |
1367 | ||
9c6595ab PA |
1368 | /* Helper for valpy_richcompare. Implements comparison operations for |
1369 | value objects. Returns true/false on success. Returns -1 with a | |
1370 | Python exception set if a Python error is detected. Throws a GDB | |
1371 | exception on other errors (memory error, etc.). */ | |
1372 | ||
1373 | static int | |
1374 | valpy_richcompare_throw (PyObject *self, PyObject *other, int op) | |
1375 | { | |
1376 | int result; | |
1377 | struct value *value_other; | |
1378 | struct value *value_self; | |
1379 | struct value *mark = value_mark (); | |
1380 | struct cleanup *cleanup; | |
1381 | ||
1382 | value_other = convert_value_from_python (other); | |
1383 | if (value_other == NULL) | |
1384 | return -1; | |
1385 | ||
1386 | cleanup = make_cleanup_value_free_to_mark (mark); | |
1387 | ||
1388 | value_self = ((value_object *) self)->value; | |
1389 | ||
1390 | switch (op) | |
1391 | { | |
1392 | case Py_LT: | |
1393 | result = value_less (value_self, value_other); | |
1394 | break; | |
1395 | case Py_LE: | |
1396 | result = value_less (value_self, value_other) | |
1397 | || value_equal (value_self, value_other); | |
1398 | break; | |
1399 | case Py_EQ: | |
1400 | result = value_equal (value_self, value_other); | |
1401 | break; | |
1402 | case Py_NE: | |
1403 | result = !value_equal (value_self, value_other); | |
1404 | break; | |
1405 | case Py_GT: | |
1406 | result = value_less (value_other, value_self); | |
1407 | break; | |
1408 | case Py_GE: | |
1409 | result = (value_less (value_other, value_self) | |
1410 | || value_equal (value_self, value_other)); | |
1411 | break; | |
1412 | default: | |
1413 | /* Can't happen. */ | |
1414 | PyErr_SetString (PyExc_NotImplementedError, | |
1415 | _("Invalid operation on gdb.Value.")); | |
1416 | result = -1; | |
1417 | break; | |
1418 | } | |
1419 | ||
1420 | do_cleanups (cleanup); | |
1421 | return result; | |
1422 | } | |
1423 | ||
1424 | ||
8dc78533 JK |
1425 | /* Implements comparison operations for value objects. Returns NULL on error, |
1426 | with a python exception set. */ | |
08c637de TJB |
1427 | static PyObject * |
1428 | valpy_richcompare (PyObject *self, PyObject *other, int op) | |
1429 | { | |
1430 | int result = 0; | |
08c637de TJB |
1431 | |
1432 | if (other == Py_None) | |
7843261b TJB |
1433 | /* Comparing with None is special. From what I can tell, in Python |
1434 | None is smaller than anything else. */ | |
1435 | switch (op) { | |
1436 | case Py_LT: | |
1437 | case Py_LE: | |
1438 | case Py_EQ: | |
1439 | Py_RETURN_FALSE; | |
1440 | case Py_NE: | |
1441 | case Py_GT: | |
1442 | case Py_GE: | |
1443 | Py_RETURN_TRUE; | |
1444 | default: | |
1445 | /* Can't happen. */ | |
1446 | PyErr_SetString (PyExc_NotImplementedError, | |
044c0f87 | 1447 | _("Invalid operation on gdb.Value.")); |
7843261b TJB |
1448 | return NULL; |
1449 | } | |
7843261b | 1450 | |
492d29ea | 1451 | TRY |
7843261b | 1452 | { |
9c6595ab | 1453 | result = valpy_richcompare_throw (self, other, op); |
7843261b | 1454 | } |
492d29ea PA |
1455 | CATCH (except, RETURN_MASK_ALL) |
1456 | { | |
1457 | GDB_PY_HANDLE_EXCEPTION (except); | |
1458 | } | |
1459 | END_CATCH | |
7843261b | 1460 | |
f02779d8 TT |
1461 | /* In this case, the Python exception has already been set. */ |
1462 | if (result < 0) | |
1463 | return NULL; | |
1464 | ||
7843261b TJB |
1465 | if (result == 1) |
1466 | Py_RETURN_TRUE; | |
1467 | ||
1468 | Py_RETURN_FALSE; | |
1469 | } | |
1470 | ||
9a27f2c6 | 1471 | #ifndef IS_PY3K |
08c637de TJB |
1472 | /* Implements conversion to int. */ |
1473 | static PyObject * | |
1474 | valpy_int (PyObject *self) | |
1475 | { | |
1476 | struct value *value = ((value_object *) self)->value; | |
1477 | struct type *type = value_type (value); | |
1478 | LONGEST l = 0; | |
08c637de | 1479 | |
492d29ea | 1480 | TRY |
08c637de | 1481 | { |
7c245c24 | 1482 | if (!is_integral_type (type)) |
f287c1f3 PM |
1483 | error (_("Cannot convert value to int.")); |
1484 | ||
08c637de TJB |
1485 | l = value_as_long (value); |
1486 | } | |
492d29ea PA |
1487 | CATCH (except, RETURN_MASK_ALL) |
1488 | { | |
1489 | GDB_PY_HANDLE_EXCEPTION (except); | |
1490 | } | |
1491 | END_CATCH | |
08c637de | 1492 | |
74aedc46 | 1493 | return gdb_py_object_from_longest (l); |
08c637de | 1494 | } |
9a27f2c6 | 1495 | #endif |
08c637de TJB |
1496 | |
1497 | /* Implements conversion to long. */ | |
1498 | static PyObject * | |
1499 | valpy_long (PyObject *self) | |
1500 | { | |
1501 | struct value *value = ((value_object *) self)->value; | |
1502 | struct type *type = value_type (value); | |
1503 | LONGEST l = 0; | |
08c637de | 1504 | |
492d29ea | 1505 | TRY |
08c637de | 1506 | { |
f168693b | 1507 | type = check_typedef (type); |
f287c1f3 | 1508 | |
7c245c24 JB |
1509 | if (!is_integral_type (type) |
1510 | && TYPE_CODE (type) != TYPE_CODE_PTR) | |
f287c1f3 PM |
1511 | error (_("Cannot convert value to long.")); |
1512 | ||
08c637de TJB |
1513 | l = value_as_long (value); |
1514 | } | |
492d29ea PA |
1515 | CATCH (except, RETURN_MASK_ALL) |
1516 | { | |
1517 | GDB_PY_HANDLE_EXCEPTION (except); | |
1518 | } | |
1519 | END_CATCH | |
08c637de | 1520 | |
74aedc46 | 1521 | return gdb_py_long_from_longest (l); |
08c637de TJB |
1522 | } |
1523 | ||
1524 | /* Implements conversion to float. */ | |
1525 | static PyObject * | |
1526 | valpy_float (PyObject *self) | |
1527 | { | |
1528 | struct value *value = ((value_object *) self)->value; | |
1529 | struct type *type = value_type (value); | |
1530 | double d = 0; | |
08c637de | 1531 | |
492d29ea | 1532 | TRY |
08c637de | 1533 | { |
f168693b | 1534 | type = check_typedef (type); |
f287c1f3 PM |
1535 | |
1536 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
1537 | error (_("Cannot convert value to float.")); | |
1538 | ||
08c637de TJB |
1539 | d = value_as_double (value); |
1540 | } | |
492d29ea PA |
1541 | CATCH (except, RETURN_MASK_ALL) |
1542 | { | |
1543 | GDB_PY_HANDLE_EXCEPTION (except); | |
1544 | } | |
1545 | END_CATCH | |
08c637de TJB |
1546 | |
1547 | return PyFloat_FromDouble (d); | |
1548 | } | |
1549 | ||
7843261b TJB |
1550 | /* Returns an object for a value which is released from the all_values chain, |
1551 | so its lifetime is not bound to the execution of a command. */ | |
1552 | PyObject * | |
1553 | value_to_value_object (struct value *val) | |
1554 | { | |
1555 | value_object *val_obj; | |
1556 | ||
1557 | val_obj = PyObject_New (value_object, &value_object_type); | |
1558 | if (val_obj != NULL) | |
1559 | { | |
1560 | val_obj->value = val; | |
e848a8a5 | 1561 | release_value_or_incref (val); |
c0c6f777 | 1562 | val_obj->address = NULL; |
2c74e833 | 1563 | val_obj->type = NULL; |
03f17ccf | 1564 | val_obj->dynamic_type = NULL; |
4e7a5ef5 | 1565 | note_value (val_obj); |
7843261b TJB |
1566 | } |
1567 | ||
1568 | return (PyObject *) val_obj; | |
1569 | } | |
1570 | ||
4e7a5ef5 TT |
1571 | /* Returns a borrowed reference to the struct value corresponding to |
1572 | the given value object. */ | |
a6bac58e TT |
1573 | struct value * |
1574 | value_object_to_value (PyObject *self) | |
1575 | { | |
1576 | value_object *real; | |
d59b6f6c | 1577 | |
a6bac58e TT |
1578 | if (! PyObject_TypeCheck (self, &value_object_type)) |
1579 | return NULL; | |
1580 | real = (value_object *) self; | |
1581 | return real->value; | |
1582 | } | |
1583 | ||
7843261b | 1584 | /* Try to convert a Python value to a gdb value. If the value cannot |
4e7a5ef5 TT |
1585 | be converted, set a Python exception and return NULL. Returns a |
1586 | reference to a new value on the all_values chain. */ | |
7843261b TJB |
1587 | |
1588 | struct value * | |
1589 | convert_value_from_python (PyObject *obj) | |
1590 | { | |
1591 | struct value *value = NULL; /* -Wall */ | |
08c637de | 1592 | int cmp; |
7843261b | 1593 | |
08c637de | 1594 | gdb_assert (obj != NULL); |
7843261b | 1595 | |
492d29ea | 1596 | TRY |
7843261b | 1597 | { |
256458bc | 1598 | if (PyBool_Check (obj)) |
08c637de TJB |
1599 | { |
1600 | cmp = PyObject_IsTrue (obj); | |
1601 | if (cmp >= 0) | |
1602 | value = value_from_longest (builtin_type_pybool, cmp); | |
1603 | } | |
06ab7b19 PM |
1604 | /* Make a long logic check first. In Python 3.x, internally, |
1605 | all integers are represented as longs. In Python 2.x, there | |
1606 | is still a differentiation internally between a PyInt and a | |
1607 | PyLong. Explicitly do this long check conversion first. In | |
1608 | GDB, for Python 3.x, we #ifdef PyInt = PyLong. This check has | |
1609 | to be done first to ensure we do not lose information in the | |
1610 | conversion process. */ | |
08c637de TJB |
1611 | else if (PyLong_Check (obj)) |
1612 | { | |
1613 | LONGEST l = PyLong_AsLongLong (obj); | |
7843261b | 1614 | |
595939de PM |
1615 | if (PyErr_Occurred ()) |
1616 | { | |
1617 | /* If the error was an overflow, we can try converting to | |
1618 | ULONGEST instead. */ | |
1619 | if (PyErr_ExceptionMatches (PyExc_OverflowError)) | |
1620 | { | |
1621 | PyObject *etype, *evalue, *etraceback, *zero; | |
1622 | ||
1623 | PyErr_Fetch (&etype, &evalue, &etraceback); | |
1624 | zero = PyInt_FromLong (0); | |
1625 | ||
1626 | /* Check whether obj is positive. */ | |
1627 | if (PyObject_RichCompareBool (obj, zero, Py_GT) > 0) | |
1628 | { | |
1629 | ULONGEST ul; | |
1630 | ||
1631 | ul = PyLong_AsUnsignedLongLong (obj); | |
1632 | if (! PyErr_Occurred ()) | |
1633 | value = value_from_ulongest (builtin_type_upylong, ul); | |
1634 | } | |
1635 | else | |
1636 | /* There's nothing we can do. */ | |
1637 | PyErr_Restore (etype, evalue, etraceback); | |
1638 | ||
1639 | Py_DECREF (zero); | |
1640 | } | |
1641 | } | |
1642 | else | |
08c637de TJB |
1643 | value = value_from_longest (builtin_type_pylong, l); |
1644 | } | |
06ab7b19 PM |
1645 | else if (PyInt_Check (obj)) |
1646 | { | |
1647 | long l = PyInt_AsLong (obj); | |
1648 | ||
1649 | if (! PyErr_Occurred ()) | |
1650 | value = value_from_longest (builtin_type_pyint, l); | |
1651 | } | |
08c637de TJB |
1652 | else if (PyFloat_Check (obj)) |
1653 | { | |
1654 | double d = PyFloat_AsDouble (obj); | |
7843261b | 1655 | |
08c637de TJB |
1656 | if (! PyErr_Occurred ()) |
1657 | value = value_from_double (builtin_type_pyfloat, d); | |
1658 | } | |
1659 | else if (gdbpy_is_string (obj)) | |
1660 | { | |
1661 | char *s; | |
1662 | ||
1663 | s = python_string_to_target_string (obj); | |
1664 | if (s != NULL) | |
1665 | { | |
9bc3523d TT |
1666 | struct cleanup *old; |
1667 | ||
08c637de | 1668 | old = make_cleanup (xfree, s); |
3b7538c0 | 1669 | value = value_cstring (s, strlen (s), builtin_type_pychar); |
08c637de TJB |
1670 | do_cleanups (old); |
1671 | } | |
1672 | } | |
1673 | else if (PyObject_TypeCheck (obj, &value_object_type)) | |
cc924cad | 1674 | value = value_copy (((value_object *) obj)->value); |
be759fcf PM |
1675 | else if (gdbpy_is_lazy_string (obj)) |
1676 | { | |
1677 | PyObject *result; | |
d59b6f6c | 1678 | |
fb6a3ed3 | 1679 | result = PyObject_CallMethodObjArgs (obj, gdbpy_value_cst, NULL); |
be759fcf PM |
1680 | value = value_copy (((value_object *) result)->value); |
1681 | } | |
08c637de | 1682 | else |
9a27f2c6 PK |
1683 | #ifdef IS_PY3K |
1684 | PyErr_Format (PyExc_TypeError, | |
1685 | _("Could not convert Python object: %S."), obj); | |
1686 | #else | |
9a2b4c1b MS |
1687 | PyErr_Format (PyExc_TypeError, |
1688 | _("Could not convert Python object: %s."), | |
08c637de | 1689 | PyString_AsString (PyObject_Str (obj))); |
9a27f2c6 | 1690 | #endif |
08c637de | 1691 | } |
492d29ea | 1692 | CATCH (except, RETURN_MASK_ALL) |
08c637de TJB |
1693 | { |
1694 | PyErr_Format (except.reason == RETURN_QUIT | |
1695 | ? PyExc_KeyboardInterrupt : PyExc_RuntimeError, | |
1696 | "%s", except.message); | |
1697 | return NULL; | |
1698 | } | |
492d29ea | 1699 | END_CATCH |
7843261b TJB |
1700 | |
1701 | return value; | |
1702 | } | |
1703 | ||
1704 | /* Returns value object in the ARGth position in GDB's history. */ | |
1705 | PyObject * | |
08c637de | 1706 | gdbpy_history (PyObject *self, PyObject *args) |
7843261b TJB |
1707 | { |
1708 | int i; | |
1709 | struct value *res_val = NULL; /* Initialize to appease gcc warning. */ | |
7843261b TJB |
1710 | |
1711 | if (!PyArg_ParseTuple (args, "i", &i)) | |
1712 | return NULL; | |
1713 | ||
492d29ea | 1714 | TRY |
7843261b TJB |
1715 | { |
1716 | res_val = access_value_history (i); | |
1717 | } | |
492d29ea PA |
1718 | CATCH (except, RETURN_MASK_ALL) |
1719 | { | |
1720 | GDB_PY_HANDLE_EXCEPTION (except); | |
1721 | } | |
1722 | END_CATCH | |
7843261b TJB |
1723 | |
1724 | return value_to_value_object (res_val); | |
1725 | } | |
1726 | ||
595939de PM |
1727 | /* Returns 1 in OBJ is a gdb.Value object, 0 otherwise. */ |
1728 | ||
1729 | int | |
1730 | gdbpy_is_value_object (PyObject *obj) | |
1731 | { | |
1732 | return PyObject_TypeCheck (obj, &value_object_type); | |
1733 | } | |
1734 | ||
999633ed | 1735 | int |
7843261b TJB |
1736 | gdbpy_initialize_values (void) |
1737 | { | |
7843261b | 1738 | if (PyType_Ready (&value_object_type) < 0) |
999633ed | 1739 | return -1; |
7843261b | 1740 | |
aa36459a TT |
1741 | return gdb_pymodule_addobject (gdb_module, "Value", |
1742 | (PyObject *) &value_object_type); | |
7843261b TJB |
1743 | } |
1744 | ||
2c74e833 TT |
1745 | \f |
1746 | ||
def2b000 | 1747 | static PyGetSetDef value_object_getset[] = { |
c0c6f777 TJB |
1748 | { "address", valpy_get_address, NULL, "The address of the value.", |
1749 | NULL }, | |
def2b000 | 1750 | { "is_optimized_out", valpy_get_is_optimized_out, NULL, |
9a2b4c1b MS |
1751 | "Boolean telling whether the value is optimized " |
1752 | "out (i.e., not available).", | |
def2b000 | 1753 | NULL }, |
2c74e833 | 1754 | { "type", valpy_get_type, NULL, "Type of the value.", NULL }, |
03f17ccf TT |
1755 | { "dynamic_type", valpy_get_dynamic_type, NULL, |
1756 | "Dynamic type of the value.", NULL }, | |
913460fc PK |
1757 | { "is_lazy", valpy_get_is_lazy, NULL, |
1758 | "Boolean telling whether the value is lazy (not fetched yet\n\ | |
1759 | from the inferior). A lazy value is fetched when needed, or when\n\ | |
1760 | the \"fetch_lazy()\" method is called.", NULL }, | |
def2b000 TJB |
1761 | {NULL} /* Sentinel */ |
1762 | }; | |
1763 | ||
f9176c46 | 1764 | static PyMethodDef value_object_methods[] = { |
2c74e833 | 1765 | { "cast", valpy_cast, METH_VARARGS, "Cast the value to the supplied type." }, |
f9ffd4bb TT |
1766 | { "dynamic_cast", valpy_dynamic_cast, METH_VARARGS, |
1767 | "dynamic_cast (gdb.Type) -> gdb.Value\n\ | |
1768 | Cast the value to the supplied type, as if by the C++ dynamic_cast operator." | |
1769 | }, | |
1770 | { "reinterpret_cast", valpy_reinterpret_cast, METH_VARARGS, | |
1771 | "reinterpret_cast (gdb.Type) -> gdb.Value\n\ | |
1772 | Cast the value to the supplied type, as if by the C++\n\ | |
1773 | reinterpret_cast operator." | |
1774 | }, | |
f9176c46 | 1775 | { "dereference", valpy_dereference, METH_NOARGS, "Dereferences the value." }, |
7b282c5a SCR |
1776 | { "referenced_value", valpy_referenced_value, METH_NOARGS, |
1777 | "Return the value referenced by a TYPE_CODE_REF or TYPE_CODE_PTR value." }, | |
4c082a81 SC |
1778 | { "reference_value", valpy_reference_value, METH_NOARGS, |
1779 | "Return a value of type TYPE_CODE_REF referencing this value." }, | |
1780 | { "const_value", valpy_const_value, METH_NOARGS, | |
1781 | "Return a 'const' qualied version of the same value." }, | |
9a2b4c1b MS |
1782 | { "lazy_string", (PyCFunction) valpy_lazy_string, |
1783 | METH_VARARGS | METH_KEYWORDS, | |
be759fcf PM |
1784 | "lazy_string ([encoding] [, length]) -> lazy_string\n\ |
1785 | Return a lazy string representation of the value." }, | |
cc924cad | 1786 | { "string", (PyCFunction) valpy_string, METH_VARARGS | METH_KEYWORDS, |
fbb8f299 | 1787 | "string ([encoding] [, errors] [, length]) -> string\n\ |
cc924cad | 1788 | Return Unicode string representation of the value." }, |
256458bc | 1789 | { "fetch_lazy", valpy_fetch_lazy, METH_NOARGS, |
913460fc | 1790 | "Fetches the value from the inferior, if it was lazy." }, |
f9176c46 PA |
1791 | {NULL} /* Sentinel */ |
1792 | }; | |
1793 | ||
1794 | static PyNumberMethods value_object_as_number = { | |
1795 | valpy_add, | |
1796 | valpy_subtract, | |
1797 | valpy_multiply, | |
9a27f2c6 | 1798 | #ifndef IS_PY3K |
f9176c46 | 1799 | valpy_divide, |
9a27f2c6 | 1800 | #endif |
f9176c46 PA |
1801 | valpy_remainder, |
1802 | NULL, /* nb_divmod */ | |
1803 | valpy_power, /* nb_power */ | |
1804 | valpy_negative, /* nb_negative */ | |
1805 | valpy_positive, /* nb_positive */ | |
1806 | valpy_absolute, /* nb_absolute */ | |
08c637de TJB |
1807 | valpy_nonzero, /* nb_nonzero */ |
1808 | valpy_invert, /* nb_invert */ | |
1809 | valpy_lsh, /* nb_lshift */ | |
1810 | valpy_rsh, /* nb_rshift */ | |
1811 | valpy_and, /* nb_and */ | |
1812 | valpy_xor, /* nb_xor */ | |
1813 | valpy_or, /* nb_or */ | |
9a27f2c6 PK |
1814 | #ifdef IS_PY3K |
1815 | valpy_long, /* nb_int */ | |
1816 | NULL, /* reserved */ | |
1817 | #else | |
08c637de TJB |
1818 | NULL, /* nb_coerce */ |
1819 | valpy_int, /* nb_int */ | |
1820 | valpy_long, /* nb_long */ | |
9a27f2c6 | 1821 | #endif |
08c637de | 1822 | valpy_float, /* nb_float */ |
9a27f2c6 | 1823 | #ifndef IS_PY3K |
08c637de | 1824 | NULL, /* nb_oct */ |
9a27f2c6 PK |
1825 | NULL, /* nb_hex */ |
1826 | #endif | |
1827 | NULL, /* nb_inplace_add */ | |
1828 | NULL, /* nb_inplace_subtract */ | |
1829 | NULL, /* nb_inplace_multiply */ | |
1830 | NULL, /* nb_inplace_remainder */ | |
1831 | NULL, /* nb_inplace_power */ | |
1832 | NULL, /* nb_inplace_lshift */ | |
1833 | NULL, /* nb_inplace_rshift */ | |
1834 | NULL, /* nb_inplace_and */ | |
1835 | NULL, /* nb_inplace_xor */ | |
1836 | NULL, /* nb_inplace_or */ | |
1837 | NULL, /* nb_floor_divide */ | |
1838 | valpy_divide /* nb_true_divide */ | |
f9176c46 PA |
1839 | }; |
1840 | ||
1841 | static PyMappingMethods value_object_as_mapping = { | |
1842 | valpy_length, | |
1843 | valpy_getitem, | |
1844 | valpy_setitem | |
1845 | }; | |
1846 | ||
1847 | PyTypeObject value_object_type = { | |
9a27f2c6 | 1848 | PyVarObject_HEAD_INIT (NULL, 0) |
f9176c46 PA |
1849 | "gdb.Value", /*tp_name*/ |
1850 | sizeof (value_object), /*tp_basicsize*/ | |
1851 | 0, /*tp_itemsize*/ | |
1852 | valpy_dealloc, /*tp_dealloc*/ | |
1853 | 0, /*tp_print*/ | |
1854 | 0, /*tp_getattr*/ | |
1855 | 0, /*tp_setattr*/ | |
1856 | 0, /*tp_compare*/ | |
1857 | 0, /*tp_repr*/ | |
1858 | &value_object_as_number, /*tp_as_number*/ | |
1859 | 0, /*tp_as_sequence*/ | |
1860 | &value_object_as_mapping, /*tp_as_mapping*/ | |
88d4aea7 | 1861 | valpy_hash, /*tp_hash*/ |
5374244e | 1862 | valpy_call, /*tp_call*/ |
f9176c46 PA |
1863 | valpy_str, /*tp_str*/ |
1864 | 0, /*tp_getattro*/ | |
1865 | 0, /*tp_setattro*/ | |
1866 | 0, /*tp_as_buffer*/ | |
9a2b4c1b MS |
1867 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_CHECKTYPES |
1868 | | Py_TPFLAGS_BASETYPE, /*tp_flags*/ | |
f9176c46 PA |
1869 | "GDB value object", /* tp_doc */ |
1870 | 0, /* tp_traverse */ | |
1871 | 0, /* tp_clear */ | |
1872 | valpy_richcompare, /* tp_richcompare */ | |
1873 | 0, /* tp_weaklistoffset */ | |
1874 | 0, /* tp_iter */ | |
1875 | 0, /* tp_iternext */ | |
08c637de TJB |
1876 | value_object_methods, /* tp_methods */ |
1877 | 0, /* tp_members */ | |
def2b000 | 1878 | value_object_getset, /* tp_getset */ |
08c637de TJB |
1879 | 0, /* tp_base */ |
1880 | 0, /* tp_dict */ | |
1881 | 0, /* tp_descr_get */ | |
1882 | 0, /* tp_descr_set */ | |
1883 | 0, /* tp_dictoffset */ | |
1884 | 0, /* tp_init */ | |
1885 | 0, /* tp_alloc */ | |
1886 | valpy_new /* tp_new */ | |
f9176c46 | 1887 | }; |