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7843261b TJB |
1 | /* Python interface to values. |
2 | ||
ecd75fc8 | 3 | Copyright (C) 2008-2014 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" | |
08c637de | 21 | #include "gdb_assert.h" |
7843261b TJB |
22 | #include "charset.h" |
23 | #include "value.h" | |
24 | #include "exceptions.h" | |
25 | #include "language.h" | |
26 | #include "dfp.h" | |
79a45b7d | 27 | #include "valprint.h" |
5374244e | 28 | #include "infcall.h" |
f9ffd4bb | 29 | #include "expression.h" |
03f17ccf | 30 | #include "cp-abi.h" |
49a8461d | 31 | #include "python.h" |
7843261b | 32 | |
7843261b TJB |
33 | #include "python-internal.h" |
34 | ||
35 | /* Even though Python scalar types directly map to host types, we use | |
b021a221 | 36 | target types here to remain consistent with the values system in |
7843261b TJB |
37 | GDB (which uses target arithmetic). */ |
38 | ||
39 | /* Python's integer type corresponds to C's long type. */ | |
d452c4bc | 40 | #define builtin_type_pyint builtin_type (python_gdbarch)->builtin_long |
7843261b TJB |
41 | |
42 | /* Python's float type corresponds to C's double type. */ | |
d452c4bc | 43 | #define builtin_type_pyfloat builtin_type (python_gdbarch)->builtin_double |
7843261b TJB |
44 | |
45 | /* Python's long type corresponds to C's long long type. */ | |
d452c4bc | 46 | #define builtin_type_pylong builtin_type (python_gdbarch)->builtin_long_long |
7843261b | 47 | |
595939de PM |
48 | /* Python's long type corresponds to C's long long type. Unsigned version. */ |
49 | #define builtin_type_upylong builtin_type \ | |
50 | (python_gdbarch)->builtin_unsigned_long_long | |
51 | ||
7843261b | 52 | #define builtin_type_pybool \ |
d452c4bc | 53 | language_bool_type (python_language, python_gdbarch) |
7843261b | 54 | |
3b7538c0 | 55 | #define builtin_type_pychar \ |
d452c4bc | 56 | language_string_char_type (python_language, python_gdbarch) |
3b7538c0 | 57 | |
4e7a5ef5 | 58 | typedef struct value_object { |
7843261b | 59 | PyObject_HEAD |
4e7a5ef5 TT |
60 | struct value_object *next; |
61 | struct value_object *prev; | |
7843261b | 62 | struct value *value; |
c0c6f777 | 63 | PyObject *address; |
2c74e833 | 64 | PyObject *type; |
03f17ccf | 65 | PyObject *dynamic_type; |
7843261b TJB |
66 | } value_object; |
67 | ||
4e7a5ef5 TT |
68 | /* List of all values which are currently exposed to Python. It is |
69 | maintained so that when an objfile is discarded, preserve_values | |
70 | can copy the values' types if needed. */ | |
71 | /* This variable is unnecessarily initialized to NULL in order to | |
72 | work around a linker bug on MacOS. */ | |
73 | static value_object *values_in_python = NULL; | |
74 | ||
7843261b TJB |
75 | /* Called by the Python interpreter when deallocating a value object. */ |
76 | static void | |
77 | valpy_dealloc (PyObject *obj) | |
78 | { | |
79 | value_object *self = (value_object *) obj; | |
80 | ||
4e7a5ef5 TT |
81 | /* Remove SELF from the global list. */ |
82 | if (self->prev) | |
83 | self->prev->next = self->next; | |
84 | else | |
85 | { | |
86 | gdb_assert (values_in_python == self); | |
87 | values_in_python = self->next; | |
88 | } | |
89 | if (self->next) | |
90 | self->next->prev = self->prev; | |
7843261b | 91 | |
77316f4c | 92 | value_free (self->value); |
c0c6f777 TJB |
93 | |
94 | if (self->address) | |
95 | /* Use braces to appease gcc warning. *sigh* */ | |
96 | { | |
97 | Py_DECREF (self->address); | |
98 | } | |
99 | ||
2c74e833 TT |
100 | if (self->type) |
101 | { | |
102 | Py_DECREF (self->type); | |
103 | } | |
104 | ||
03f17ccf TT |
105 | Py_XDECREF (self->dynamic_type); |
106 | ||
9a27f2c6 | 107 | Py_TYPE (self)->tp_free (self); |
7843261b TJB |
108 | } |
109 | ||
4e7a5ef5 TT |
110 | /* Helper to push a Value object on the global list. */ |
111 | static void | |
112 | note_value (value_object *value_obj) | |
113 | { | |
114 | value_obj->next = values_in_python; | |
115 | if (value_obj->next) | |
116 | value_obj->next->prev = value_obj; | |
117 | value_obj->prev = NULL; | |
118 | values_in_python = value_obj; | |
119 | } | |
120 | ||
8dc78533 JK |
121 | /* Called when a new gdb.Value object needs to be allocated. Returns NULL on |
122 | error, with a python exception set. */ | |
7843261b TJB |
123 | static PyObject * |
124 | valpy_new (PyTypeObject *subtype, PyObject *args, PyObject *keywords) | |
125 | { | |
126 | struct value *value = NULL; /* Initialize to appease gcc warning. */ | |
127 | value_object *value_obj; | |
7843261b TJB |
128 | |
129 | if (PyTuple_Size (args) != 1) | |
130 | { | |
131 | PyErr_SetString (PyExc_TypeError, _("Value object creation takes only " | |
132 | "1 argument")); | |
133 | return NULL; | |
134 | } | |
135 | ||
136 | value_obj = (value_object *) subtype->tp_alloc (subtype, 1); | |
137 | if (value_obj == NULL) | |
138 | { | |
139 | PyErr_SetString (PyExc_MemoryError, _("Could not allocate memory to " | |
140 | "create Value object.")); | |
141 | return NULL; | |
142 | } | |
143 | ||
08c637de TJB |
144 | value = convert_value_from_python (PyTuple_GetItem (args, 0)); |
145 | if (value == NULL) | |
7843261b TJB |
146 | { |
147 | subtype->tp_free (value_obj); | |
08c637de | 148 | return NULL; |
7843261b TJB |
149 | } |
150 | ||
151 | value_obj->value = value; | |
e848a8a5 | 152 | release_value_or_incref (value); |
c0c6f777 | 153 | value_obj->address = NULL; |
2c74e833 | 154 | value_obj->type = NULL; |
03f17ccf | 155 | value_obj->dynamic_type = NULL; |
4e7a5ef5 | 156 | note_value (value_obj); |
7843261b TJB |
157 | |
158 | return (PyObject *) value_obj; | |
159 | } | |
160 | ||
4e7a5ef5 TT |
161 | /* Iterate over all the Value objects, calling preserve_one_value on |
162 | each. */ | |
163 | void | |
6dddc817 DE |
164 | gdbpy_preserve_values (const struct extension_language_defn *extlang, |
165 | struct objfile *objfile, htab_t copied_types) | |
4e7a5ef5 TT |
166 | { |
167 | value_object *iter; | |
168 | ||
169 | for (iter = values_in_python; iter; iter = iter->next) | |
170 | preserve_one_value (iter->value, objfile, copied_types); | |
171 | } | |
172 | ||
7843261b TJB |
173 | /* Given a value of a pointer type, apply the C unary * operator to it. */ |
174 | static PyObject * | |
175 | valpy_dereference (PyObject *self, PyObject *args) | |
176 | { | |
7843261b | 177 | volatile struct gdb_exception except; |
888fe1e1 | 178 | PyObject *result = NULL; |
7843261b TJB |
179 | |
180 | TRY_CATCH (except, RETURN_MASK_ALL) | |
181 | { | |
888fe1e1 TT |
182 | struct value *res_val; |
183 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
184 | ||
7843261b | 185 | res_val = value_ind (((value_object *) self)->value); |
888fe1e1 TT |
186 | result = value_to_value_object (res_val); |
187 | do_cleanups (cleanup); | |
7843261b TJB |
188 | } |
189 | GDB_PY_HANDLE_EXCEPTION (except); | |
190 | ||
888fe1e1 | 191 | return result; |
7843261b TJB |
192 | } |
193 | ||
7b282c5a SCR |
194 | /* Given a value of a pointer type or a reference type, return the value |
195 | referenced. The difference between this function and valpy_dereference is | |
196 | that the latter applies * unary operator to a value, which need not always | |
197 | result in the value referenced. For example, for a value which is a reference | |
198 | to an 'int' pointer ('int *'), valpy_dereference will result in a value of | |
199 | type 'int' while valpy_referenced_value will result in a value of type | |
200 | 'int *'. */ | |
201 | ||
202 | static PyObject * | |
203 | valpy_referenced_value (PyObject *self, PyObject *args) | |
204 | { | |
205 | volatile struct gdb_exception except; | |
206 | PyObject *result = NULL; | |
207 | ||
208 | TRY_CATCH (except, RETURN_MASK_ALL) | |
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 | } | |
230 | GDB_PY_HANDLE_EXCEPTION (except); | |
231 | ||
232 | return result; | |
233 | } | |
234 | ||
08c637de TJB |
235 | /* Return "&value". */ |
236 | static PyObject * | |
c0c6f777 | 237 | valpy_get_address (PyObject *self, void *closure) |
08c637de | 238 | { |
c0c6f777 | 239 | value_object *val_obj = (value_object *) self; |
08c637de TJB |
240 | volatile struct gdb_exception except; |
241 | ||
c0c6f777 | 242 | if (!val_obj->address) |
08c637de | 243 | { |
c0c6f777 TJB |
244 | TRY_CATCH (except, RETURN_MASK_ALL) |
245 | { | |
888fe1e1 TT |
246 | struct value *res_val; |
247 | struct cleanup *cleanup | |
248 | = make_cleanup_value_free_to_mark (value_mark ()); | |
249 | ||
c0c6f777 | 250 | res_val = value_addr (val_obj->value); |
888fe1e1 TT |
251 | val_obj->address = value_to_value_object (res_val); |
252 | do_cleanups (cleanup); | |
c0c6f777 TJB |
253 | } |
254 | if (except.reason < 0) | |
255 | { | |
256 | val_obj->address = Py_None; | |
257 | Py_INCREF (Py_None); | |
258 | } | |
08c637de | 259 | } |
08c637de | 260 | |
3fcaed38 | 261 | Py_XINCREF (val_obj->address); |
c0c6f777 TJB |
262 | |
263 | return val_obj->address; | |
08c637de TJB |
264 | } |
265 | ||
2c74e833 TT |
266 | /* Return type of the value. */ |
267 | static PyObject * | |
268 | valpy_get_type (PyObject *self, void *closure) | |
269 | { | |
270 | value_object *obj = (value_object *) self; | |
d59b6f6c | 271 | |
2c74e833 TT |
272 | if (!obj->type) |
273 | { | |
274 | obj->type = type_to_type_object (value_type (obj->value)); | |
275 | if (!obj->type) | |
03f17ccf | 276 | return NULL; |
2c74e833 TT |
277 | } |
278 | Py_INCREF (obj->type); | |
279 | return obj->type; | |
280 | } | |
281 | ||
03f17ccf TT |
282 | /* Return dynamic type of the value. */ |
283 | ||
284 | static PyObject * | |
285 | valpy_get_dynamic_type (PyObject *self, void *closure) | |
286 | { | |
287 | value_object *obj = (value_object *) self; | |
288 | volatile struct gdb_exception except; | |
289 | struct type *type = NULL; | |
290 | ||
291 | if (obj->dynamic_type != NULL) | |
292 | { | |
293 | Py_INCREF (obj->dynamic_type); | |
294 | return obj->dynamic_type; | |
295 | } | |
296 | ||
297 | TRY_CATCH (except, RETURN_MASK_ALL) | |
298 | { | |
299 | struct value *val = obj->value; | |
888fe1e1 | 300 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); |
03f17ccf TT |
301 | |
302 | type = value_type (val); | |
303 | CHECK_TYPEDEF (type); | |
304 | ||
305 | if (((TYPE_CODE (type) == TYPE_CODE_PTR) | |
306 | || (TYPE_CODE (type) == TYPE_CODE_REF)) | |
307 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS)) | |
308 | { | |
309 | struct value *target; | |
310 | int was_pointer = TYPE_CODE (type) == TYPE_CODE_PTR; | |
311 | ||
7af389b8 SC |
312 | if (was_pointer) |
313 | target = value_ind (val); | |
314 | else | |
315 | target = coerce_ref (val); | |
03f17ccf TT |
316 | type = value_rtti_type (target, NULL, NULL, NULL); |
317 | ||
318 | if (type) | |
319 | { | |
320 | if (was_pointer) | |
321 | type = lookup_pointer_type (type); | |
322 | else | |
323 | type = lookup_reference_type (type); | |
324 | } | |
325 | } | |
326 | else if (TYPE_CODE (type) == TYPE_CODE_CLASS) | |
327 | type = value_rtti_type (val, NULL, NULL, NULL); | |
328 | else | |
329 | { | |
330 | /* Re-use object's static type. */ | |
331 | type = NULL; | |
332 | } | |
888fe1e1 TT |
333 | |
334 | do_cleanups (cleanup); | |
03f17ccf TT |
335 | } |
336 | GDB_PY_HANDLE_EXCEPTION (except); | |
337 | ||
338 | if (type == NULL) | |
97b77b39 | 339 | obj->dynamic_type = valpy_get_type (self, NULL); |
03f17ccf TT |
340 | else |
341 | obj->dynamic_type = type_to_type_object (type); | |
342 | ||
97b77b39 | 343 | Py_XINCREF (obj->dynamic_type); |
03f17ccf TT |
344 | return obj->dynamic_type; |
345 | } | |
346 | ||
be759fcf PM |
347 | /* Implementation of gdb.Value.lazy_string ([encoding] [, length]) -> |
348 | string. Return a PyObject representing a lazy_string_object type. | |
349 | A lazy string is a pointer to a string with an optional encoding and | |
350 | length. If ENCODING is not given, encoding is set to None. If an | |
351 | ENCODING is provided the encoding parameter is set to ENCODING, but | |
352 | the string is not encoded. If LENGTH is provided then the length | |
353 | parameter is set to LENGTH, otherwise length will be set to -1 (first | |
354 | null of appropriate with). */ | |
355 | static PyObject * | |
356 | valpy_lazy_string (PyObject *self, PyObject *args, PyObject *kw) | |
357 | { | |
74aedc46 | 358 | gdb_py_longest length = -1; |
be759fcf PM |
359 | struct value *value = ((value_object *) self)->value; |
360 | const char *user_encoding = NULL; | |
361 | static char *keywords[] = { "encoding", "length", NULL }; | |
888fe1e1 | 362 | PyObject *str_obj = NULL; |
f287c1f3 | 363 | volatile struct gdb_exception except; |
be759fcf | 364 | |
74aedc46 | 365 | if (!PyArg_ParseTupleAndKeywords (args, kw, "|s" GDB_PY_LL_ARG, keywords, |
be759fcf PM |
366 | &user_encoding, &length)) |
367 | return NULL; | |
368 | ||
f287c1f3 PM |
369 | TRY_CATCH (except, RETURN_MASK_ALL) |
370 | { | |
888fe1e1 TT |
371 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); |
372 | ||
f287c1f3 PM |
373 | if (TYPE_CODE (value_type (value)) == TYPE_CODE_PTR) |
374 | value = value_ind (value); | |
888fe1e1 TT |
375 | |
376 | str_obj = gdbpy_create_lazy_string_object (value_address (value), length, | |
377 | user_encoding, | |
378 | value_type (value)); | |
379 | ||
380 | do_cleanups (cleanup); | |
f287c1f3 PM |
381 | } |
382 | GDB_PY_HANDLE_EXCEPTION (except); | |
be759fcf | 383 | |
888fe1e1 | 384 | return str_obj; |
be759fcf PM |
385 | } |
386 | ||
fbb8f299 PM |
387 | /* Implementation of gdb.Value.string ([encoding] [, errors] |
388 | [, length]) -> string. Return Unicode string with value contents. | |
389 | If ENCODING is not given, the string is assumed to be encoded in | |
390 | the target's charset. If LENGTH is provided, only fetch string to | |
391 | the length provided. */ | |
392 | ||
b6cb8e7d | 393 | static PyObject * |
cc924cad | 394 | valpy_string (PyObject *self, PyObject *args, PyObject *kw) |
b6cb8e7d | 395 | { |
f92adf3c | 396 | int length = -1; |
b6cb8e7d TJB |
397 | gdb_byte *buffer; |
398 | struct value *value = ((value_object *) self)->value; | |
399 | volatile struct gdb_exception except; | |
400 | PyObject *unicode; | |
401 | const char *encoding = NULL; | |
402 | const char *errors = NULL; | |
403 | const char *user_encoding = NULL; | |
404 | const char *la_encoding = NULL; | |
96c07c5b | 405 | struct type *char_type; |
31158f0e | 406 | static char *keywords[] = { "encoding", "errors", "length", NULL }; |
b6cb8e7d | 407 | |
fbb8f299 PM |
408 | if (!PyArg_ParseTupleAndKeywords (args, kw, "|ssi", keywords, |
409 | &user_encoding, &errors, &length)) | |
b6cb8e7d TJB |
410 | return NULL; |
411 | ||
412 | TRY_CATCH (except, RETURN_MASK_ALL) | |
413 | { | |
96c07c5b | 414 | LA_GET_STRING (value, &buffer, &length, &char_type, &la_encoding); |
b6cb8e7d TJB |
415 | } |
416 | GDB_PY_HANDLE_EXCEPTION (except); | |
417 | ||
418 | encoding = (user_encoding && *user_encoding) ? user_encoding : la_encoding; | |
89f6d837 PA |
419 | unicode = PyUnicode_Decode ((const char *) buffer, |
420 | length * TYPE_LENGTH (char_type), | |
96c07c5b | 421 | encoding, errors); |
b6cb8e7d TJB |
422 | xfree (buffer); |
423 | ||
424 | return unicode; | |
425 | } | |
426 | ||
f9ffd4bb TT |
427 | /* A helper function that implements the various cast operators. */ |
428 | ||
2c74e833 | 429 | static PyObject * |
f9ffd4bb | 430 | valpy_do_cast (PyObject *self, PyObject *args, enum exp_opcode op) |
2c74e833 | 431 | { |
888fe1e1 | 432 | PyObject *type_obj, *result = NULL; |
2c74e833 | 433 | struct type *type; |
2c74e833 TT |
434 | volatile struct gdb_exception except; |
435 | ||
436 | if (! PyArg_ParseTuple (args, "O", &type_obj)) | |
437 | return NULL; | |
438 | ||
439 | type = type_object_to_type (type_obj); | |
440 | if (! type) | |
441 | { | |
256458bc | 442 | PyErr_SetString (PyExc_RuntimeError, |
044c0f87 | 443 | _("Argument must be a type.")); |
2c74e833 TT |
444 | return NULL; |
445 | } | |
446 | ||
447 | TRY_CATCH (except, RETURN_MASK_ALL) | |
448 | { | |
f9ffd4bb | 449 | struct value *val = ((value_object *) self)->value; |
888fe1e1 TT |
450 | struct value *res_val; |
451 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
f9ffd4bb TT |
452 | |
453 | if (op == UNOP_DYNAMIC_CAST) | |
454 | res_val = value_dynamic_cast (type, val); | |
455 | else if (op == UNOP_REINTERPRET_CAST) | |
456 | res_val = value_reinterpret_cast (type, val); | |
457 | else | |
458 | { | |
459 | gdb_assert (op == UNOP_CAST); | |
460 | res_val = value_cast (type, val); | |
461 | } | |
888fe1e1 TT |
462 | |
463 | result = value_to_value_object (res_val); | |
464 | do_cleanups (cleanup); | |
2c74e833 TT |
465 | } |
466 | GDB_PY_HANDLE_EXCEPTION (except); | |
467 | ||
888fe1e1 | 468 | return result; |
2c74e833 TT |
469 | } |
470 | ||
f9ffd4bb TT |
471 | /* Implementation of the "cast" method. */ |
472 | ||
473 | static PyObject * | |
474 | valpy_cast (PyObject *self, PyObject *args) | |
475 | { | |
476 | return valpy_do_cast (self, args, UNOP_CAST); | |
477 | } | |
478 | ||
479 | /* Implementation of the "dynamic_cast" method. */ | |
480 | ||
481 | static PyObject * | |
482 | valpy_dynamic_cast (PyObject *self, PyObject *args) | |
483 | { | |
484 | return valpy_do_cast (self, args, UNOP_DYNAMIC_CAST); | |
485 | } | |
486 | ||
487 | /* Implementation of the "reinterpret_cast" method. */ | |
488 | ||
489 | static PyObject * | |
490 | valpy_reinterpret_cast (PyObject *self, PyObject *args) | |
491 | { | |
492 | return valpy_do_cast (self, args, UNOP_REINTERPRET_CAST); | |
493 | } | |
494 | ||
7843261b TJB |
495 | static Py_ssize_t |
496 | valpy_length (PyObject *self) | |
497 | { | |
498 | /* We don't support getting the number of elements in a struct / class. */ | |
499 | PyErr_SetString (PyExc_NotImplementedError, | |
044c0f87 | 500 | _("Invalid operation on gdb.Value.")); |
7843261b TJB |
501 | return -1; |
502 | } | |
503 | ||
a16b0e22 SC |
504 | /* Return 1 if the gdb.Field object FIELD is present in the value V. |
505 | Returns 0 otherwise. If any Python error occurs, -1 is returned. */ | |
506 | ||
507 | static int | |
508 | value_has_field (struct value *v, PyObject *field) | |
509 | { | |
510 | struct type *parent_type, *val_type; | |
511 | enum type_code type_code; | |
512 | PyObject *type_object = PyObject_GetAttrString (field, "parent_type"); | |
513 | volatile struct gdb_exception except; | |
514 | int has_field = 0; | |
515 | ||
516 | if (type_object == NULL) | |
517 | return -1; | |
518 | ||
519 | parent_type = type_object_to_type (type_object); | |
520 | Py_DECREF (type_object); | |
521 | if (parent_type == NULL) | |
522 | { | |
523 | PyErr_SetString (PyExc_TypeError, | |
524 | _("'parent_type' attribute of gdb.Field object is not a" | |
525 | "gdb.Type object.")); | |
526 | return -1; | |
527 | } | |
528 | ||
529 | TRY_CATCH (except, RETURN_MASK_ALL) | |
530 | { | |
531 | val_type = value_type (v); | |
532 | val_type = check_typedef (val_type); | |
533 | if (TYPE_CODE (val_type) == TYPE_CODE_REF | |
534 | || TYPE_CODE (val_type) == TYPE_CODE_PTR) | |
535 | val_type = check_typedef (TYPE_TARGET_TYPE (val_type)); | |
536 | ||
537 | type_code = TYPE_CODE (val_type); | |
538 | if ((type_code == TYPE_CODE_STRUCT || type_code == TYPE_CODE_UNION) | |
539 | && types_equal (val_type, parent_type)) | |
540 | has_field = 1; | |
541 | else | |
542 | has_field = 0; | |
543 | } | |
544 | GDB_PY_SET_HANDLE_EXCEPTION (except); | |
545 | ||
546 | return has_field; | |
547 | } | |
548 | ||
549 | /* Return the value of a flag FLAG_NAME in a gdb.Field object FIELD. | |
550 | Returns 1 if the flag value is true, 0 if it is false, and -1 if | |
551 | a Python error occurs. */ | |
552 | ||
553 | static int | |
554 | get_field_flag (PyObject *field, const char *flag_name) | |
555 | { | |
556 | int flag_value; | |
49840f2a UW |
557 | /* Python 2.4 did not have a 'const' here. */ |
558 | PyObject *flag_object = PyObject_GetAttrString (field, (char *) flag_name); | |
a16b0e22 SC |
559 | |
560 | if (flag_object == NULL) | |
561 | return -1; | |
562 | ||
563 | flag_value = PyObject_IsTrue (flag_object); | |
564 | Py_DECREF (flag_object); | |
565 | ||
566 | return flag_value; | |
567 | } | |
568 | ||
b5b08fb4 SC |
569 | /* Return the "type" attribute of a gdb.Field object. |
570 | Returns NULL on error, with a Python exception set. */ | |
571 | ||
572 | static struct type * | |
573 | get_field_type (PyObject *field) | |
574 | { | |
575 | PyObject *ftype_obj = PyObject_GetAttrString (field, "type"); | |
576 | struct type *ftype; | |
577 | ||
578 | if (ftype_obj == NULL) | |
579 | return NULL; | |
580 | ftype = type_object_to_type (ftype_obj); | |
581 | Py_DECREF (ftype_obj); | |
582 | if (ftype == NULL) | |
bf7105a4 JB |
583 | PyErr_SetString (PyExc_TypeError, |
584 | _("'type' attribute of gdb.Field object is not a " | |
585 | "gdb.Type object.")); | |
b5b08fb4 SC |
586 | |
587 | return ftype; | |
588 | } | |
589 | ||
a16b0e22 SC |
590 | /* Given string name or a gdb.Field object corresponding to an element inside |
591 | a structure, return its value object. Returns NULL on error, with a python | |
592 | exception set. */ | |
593 | ||
7843261b TJB |
594 | static PyObject * |
595 | valpy_getitem (PyObject *self, PyObject *key) | |
596 | { | |
597 | value_object *self_value = (value_object *) self; | |
08c637de | 598 | char *field = NULL; |
b5b08fb4 SC |
599 | struct type *base_class_type = NULL, *field_type = NULL; |
600 | long bitpos = -1; | |
7843261b | 601 | volatile struct gdb_exception except; |
888fe1e1 | 602 | PyObject *result = NULL; |
7843261b | 603 | |
08c637de | 604 | if (gdbpy_is_string (key)) |
256458bc | 605 | { |
08c637de TJB |
606 | field = python_string_to_host_string (key); |
607 | if (field == NULL) | |
608 | return NULL; | |
609 | } | |
a16b0e22 SC |
610 | else if (gdbpy_is_field (key)) |
611 | { | |
612 | int is_base_class, valid_field; | |
613 | ||
614 | valid_field = value_has_field (self_value->value, key); | |
615 | if (valid_field < 0) | |
616 | return NULL; | |
617 | else if (valid_field == 0) | |
618 | { | |
619 | PyErr_SetString (PyExc_TypeError, | |
620 | _("Invalid lookup for a field not contained in " | |
621 | "the value.")); | |
622 | ||
623 | return NULL; | |
624 | } | |
625 | ||
626 | is_base_class = get_field_flag (key, "is_base_class"); | |
627 | if (is_base_class < 0) | |
628 | return NULL; | |
629 | else if (is_base_class > 0) | |
630 | { | |
b5b08fb4 SC |
631 | base_class_type = get_field_type (key); |
632 | if (base_class_type == NULL) | |
a16b0e22 SC |
633 | return NULL; |
634 | } | |
635 | else | |
636 | { | |
637 | PyObject *name_obj = PyObject_GetAttrString (key, "name"); | |
638 | ||
639 | if (name_obj == NULL) | |
640 | return NULL; | |
641 | ||
b5b08fb4 SC |
642 | if (name_obj != Py_None) |
643 | { | |
644 | field = python_string_to_host_string (name_obj); | |
645 | Py_DECREF (name_obj); | |
646 | if (field == NULL) | |
647 | return NULL; | |
648 | } | |
649 | else | |
650 | { | |
651 | PyObject *bitpos_obj; | |
652 | int valid; | |
653 | ||
654 | Py_DECREF (name_obj); | |
655 | ||
656 | if (!PyObject_HasAttrString (key, "bitpos")) | |
657 | { | |
658 | PyErr_SetString (PyExc_AttributeError, | |
659 | _("gdb.Field object has no name and no " | |
660 | "'bitpos' attribute.")); | |
661 | ||
662 | return NULL; | |
663 | } | |
664 | bitpos_obj = PyObject_GetAttrString (key, "bitpos"); | |
665 | if (bitpos_obj == NULL) | |
666 | return NULL; | |
667 | valid = gdb_py_int_as_long (bitpos_obj, &bitpos); | |
668 | Py_DECREF (bitpos_obj); | |
669 | if (!valid) | |
670 | return NULL; | |
671 | ||
672 | field_type = get_field_type (key); | |
673 | if (field_type == NULL) | |
674 | return NULL; | |
675 | } | |
a16b0e22 SC |
676 | } |
677 | } | |
7843261b TJB |
678 | |
679 | TRY_CATCH (except, RETURN_MASK_ALL) | |
680 | { | |
3c0ed299 | 681 | struct value *tmp = self_value->value; |
888fe1e1 TT |
682 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); |
683 | struct value *res_val = NULL; | |
08c637de TJB |
684 | |
685 | if (field) | |
686 | res_val = value_struct_elt (&tmp, NULL, field, 0, NULL); | |
b5b08fb4 SC |
687 | else if (bitpos >= 0) |
688 | res_val = value_struct_elt_bitpos (&tmp, bitpos, field_type, | |
689 | "struct/class/union"); | |
690 | else if (base_class_type != NULL) | |
a16b0e22 | 691 | { |
b5b08fb4 | 692 | struct type *val_type; |
a16b0e22 SC |
693 | |
694 | val_type = check_typedef (value_type (tmp)); | |
695 | if (TYPE_CODE (val_type) == TYPE_CODE_PTR) | |
696 | res_val = value_cast (lookup_pointer_type (base_class_type), tmp); | |
697 | else if (TYPE_CODE (val_type) == TYPE_CODE_REF) | |
698 | res_val = value_cast (lookup_reference_type (base_class_type), tmp); | |
699 | else | |
700 | res_val = value_cast (base_class_type, tmp); | |
701 | } | |
08c637de TJB |
702 | else |
703 | { | |
704 | /* Assume we are attempting an array access, and let the | |
705 | value code throw an exception if the index has an invalid | |
706 | type. */ | |
707 | struct value *idx = convert_value_from_python (key); | |
d59b6f6c | 708 | |
570e2b1a | 709 | if (idx != NULL) |
2e4d963f PM |
710 | { |
711 | /* Check the value's type is something that can be accessed via | |
712 | a subscript. */ | |
713 | struct type *type; | |
d59b6f6c | 714 | |
2e4d963f PM |
715 | tmp = coerce_ref (tmp); |
716 | type = check_typedef (value_type (tmp)); | |
717 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY | |
718 | && TYPE_CODE (type) != TYPE_CODE_PTR) | |
e10abd8f | 719 | error (_("Cannot subscript requested type.")); |
2e4d963f PM |
720 | else |
721 | res_val = value_subscript (tmp, value_as_long (idx)); | |
722 | } | |
08c637de | 723 | } |
888fe1e1 TT |
724 | |
725 | if (res_val) | |
726 | result = value_to_value_object (res_val); | |
727 | do_cleanups (cleanup); | |
7843261b | 728 | } |
570e2b1a | 729 | |
06878dd2 | 730 | xfree (field); |
7843261b TJB |
731 | GDB_PY_HANDLE_EXCEPTION (except); |
732 | ||
888fe1e1 | 733 | return result; |
7843261b TJB |
734 | } |
735 | ||
736 | static int | |
737 | valpy_setitem (PyObject *self, PyObject *key, PyObject *value) | |
738 | { | |
739 | PyErr_Format (PyExc_NotImplementedError, | |
740 | _("Setting of struct elements is not currently supported.")); | |
741 | return -1; | |
742 | } | |
743 | ||
5374244e | 744 | /* Called by the Python interpreter to perform an inferior function |
8dc78533 | 745 | call on the value. Returns NULL on error, with a python exception set. */ |
5374244e PM |
746 | static PyObject * |
747 | valpy_call (PyObject *self, PyObject *args, PyObject *keywords) | |
748 | { | |
5374244e PM |
749 | Py_ssize_t args_count; |
750 | volatile struct gdb_exception except; | |
751 | struct value *function = ((value_object *) self)->value; | |
752 | struct value **vargs = NULL; | |
749fd4ea | 753 | struct type *ftype = NULL; |
888fe1e1 TT |
754 | struct value *mark = value_mark (); |
755 | PyObject *result = NULL; | |
f287c1f3 PM |
756 | |
757 | TRY_CATCH (except, RETURN_MASK_ALL) | |
758 | { | |
759 | ftype = check_typedef (value_type (function)); | |
760 | } | |
761 | GDB_PY_HANDLE_EXCEPTION (except); | |
5374244e PM |
762 | |
763 | if (TYPE_CODE (ftype) != TYPE_CODE_FUNC) | |
764 | { | |
765 | PyErr_SetString (PyExc_RuntimeError, | |
766 | _("Value is not callable (not TYPE_CODE_FUNC).")); | |
767 | return NULL; | |
768 | } | |
769 | ||
f287c1f3 PM |
770 | if (! PyTuple_Check (args)) |
771 | { | |
772 | PyErr_SetString (PyExc_TypeError, | |
773 | _("Inferior arguments must be provided in a tuple.")); | |
774 | return NULL; | |
775 | } | |
776 | ||
5374244e PM |
777 | args_count = PyTuple_Size (args); |
778 | if (args_count > 0) | |
779 | { | |
780 | int i; | |
781 | ||
782 | vargs = alloca (sizeof (struct value *) * args_count); | |
783 | for (i = 0; i < args_count; i++) | |
784 | { | |
785 | PyObject *item = PyTuple_GetItem (args, i); | |
786 | ||
787 | if (item == NULL) | |
788 | return NULL; | |
789 | ||
790 | vargs[i] = convert_value_from_python (item); | |
791 | if (vargs[i] == NULL) | |
792 | return NULL; | |
793 | } | |
794 | } | |
795 | ||
796 | TRY_CATCH (except, RETURN_MASK_ALL) | |
797 | { | |
888fe1e1 TT |
798 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (mark); |
799 | struct value *return_value; | |
800 | ||
5374244e | 801 | return_value = call_function_by_hand (function, args_count, vargs); |
888fe1e1 TT |
802 | result = value_to_value_object (return_value); |
803 | do_cleanups (cleanup); | |
5374244e PM |
804 | } |
805 | GDB_PY_HANDLE_EXCEPTION (except); | |
806 | ||
888fe1e1 | 807 | return result; |
5374244e PM |
808 | } |
809 | ||
7843261b TJB |
810 | /* Called by the Python interpreter to obtain string representation |
811 | of the object. */ | |
812 | static PyObject * | |
813 | valpy_str (PyObject *self) | |
814 | { | |
815 | char *s = NULL; | |
7843261b | 816 | PyObject *result; |
79a45b7d | 817 | struct value_print_options opts; |
7843261b TJB |
818 | volatile struct gdb_exception except; |
819 | ||
79a45b7d TT |
820 | get_user_print_options (&opts); |
821 | opts.deref_ref = 0; | |
822 | ||
7843261b TJB |
823 | TRY_CATCH (except, RETURN_MASK_ALL) |
824 | { | |
5fe41fbf TT |
825 | struct ui_file *stb = mem_fileopen (); |
826 | struct cleanup *old_chain = make_cleanup_ui_file_delete (stb); | |
827 | ||
79a45b7d | 828 | common_val_print (((value_object *) self)->value, stb, 0, |
d452c4bc | 829 | &opts, python_language); |
759ef836 | 830 | s = ui_file_xstrdup (stb, NULL); |
5fe41fbf TT |
831 | |
832 | do_cleanups (old_chain); | |
7843261b TJB |
833 | } |
834 | GDB_PY_HANDLE_EXCEPTION (except); | |
835 | ||
7843261b TJB |
836 | result = PyUnicode_Decode (s, strlen (s), host_charset (), NULL); |
837 | xfree (s); | |
838 | ||
839 | return result; | |
840 | } | |
841 | ||
def2b000 TJB |
842 | /* Implements gdb.Value.is_optimized_out. */ |
843 | static PyObject * | |
844 | valpy_get_is_optimized_out (PyObject *self, void *closure) | |
845 | { | |
846 | struct value *value = ((value_object *) self)->value; | |
f287c1f3 PM |
847 | int opt = 0; |
848 | volatile struct gdb_exception except; | |
def2b000 | 849 | |
f287c1f3 PM |
850 | TRY_CATCH (except, RETURN_MASK_ALL) |
851 | { | |
852 | opt = value_optimized_out (value); | |
853 | } | |
854 | GDB_PY_HANDLE_EXCEPTION (except); | |
855 | ||
856 | if (opt) | |
def2b000 TJB |
857 | Py_RETURN_TRUE; |
858 | ||
859 | Py_RETURN_FALSE; | |
860 | } | |
861 | ||
913460fc PK |
862 | /* Implements gdb.Value.is_lazy. */ |
863 | static PyObject * | |
864 | valpy_get_is_lazy (PyObject *self, void *closure) | |
865 | { | |
866 | struct value *value = ((value_object *) self)->value; | |
867 | int opt = 0; | |
868 | volatile struct gdb_exception except; | |
869 | ||
870 | TRY_CATCH (except, RETURN_MASK_ALL) | |
871 | { | |
872 | opt = value_lazy (value); | |
873 | } | |
874 | GDB_PY_HANDLE_EXCEPTION (except); | |
875 | ||
876 | if (opt) | |
877 | Py_RETURN_TRUE; | |
878 | ||
879 | Py_RETURN_FALSE; | |
880 | } | |
881 | ||
882 | /* Implements gdb.Value.fetch_lazy (). */ | |
883 | static PyObject * | |
884 | valpy_fetch_lazy (PyObject *self, PyObject *args) | |
885 | { | |
886 | struct value *value = ((value_object *) self)->value; | |
887 | volatile struct gdb_exception except; | |
888 | ||
889 | TRY_CATCH (except, RETURN_MASK_ALL) | |
890 | { | |
891 | if (value_lazy (value)) | |
892 | value_fetch_lazy (value); | |
893 | } | |
894 | GDB_PY_HANDLE_EXCEPTION (except); | |
895 | ||
896 | Py_RETURN_NONE; | |
897 | } | |
898 | ||
88d4aea7 PM |
899 | /* Calculate and return the address of the PyObject as the value of |
900 | the builtin __hash__ call. */ | |
256458bc | 901 | static long |
88d4aea7 PM |
902 | valpy_hash (PyObject *self) |
903 | { | |
904 | return (long) (intptr_t) self; | |
905 | } | |
906 | ||
7843261b TJB |
907 | enum valpy_opcode |
908 | { | |
909 | VALPY_ADD, | |
910 | VALPY_SUB, | |
911 | VALPY_MUL, | |
912 | VALPY_DIV, | |
913 | VALPY_REM, | |
08c637de TJB |
914 | VALPY_POW, |
915 | VALPY_LSH, | |
916 | VALPY_RSH, | |
917 | VALPY_BITAND, | |
918 | VALPY_BITOR, | |
919 | VALPY_BITXOR | |
7843261b TJB |
920 | }; |
921 | ||
922 | /* If TYPE is a reference, return the target; otherwise return TYPE. */ | |
923 | #define STRIP_REFERENCE(TYPE) \ | |
924 | ((TYPE_CODE (TYPE) == TYPE_CODE_REF) ? (TYPE_TARGET_TYPE (TYPE)) : (TYPE)) | |
925 | ||
926 | /* Returns a value object which is the result of applying the operation | |
8dc78533 JK |
927 | specified by OPCODE to the given arguments. Returns NULL on error, with |
928 | a python exception set. */ | |
7843261b TJB |
929 | static PyObject * |
930 | valpy_binop (enum valpy_opcode opcode, PyObject *self, PyObject *other) | |
931 | { | |
7843261b | 932 | volatile struct gdb_exception except; |
888fe1e1 | 933 | PyObject *result = NULL; |
7843261b TJB |
934 | |
935 | TRY_CATCH (except, RETURN_MASK_ALL) | |
936 | { | |
937 | struct value *arg1, *arg2; | |
888fe1e1 | 938 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); |
0f5b7562 | 939 | struct value *res_val = NULL; |
f7bd0f78 SC |
940 | enum exp_opcode op = OP_NULL; |
941 | int handled = 0; | |
7843261b TJB |
942 | |
943 | /* If the gdb.Value object is the second operand, then it will be passed | |
944 | to us as the OTHER argument, and SELF will be an entirely different | |
945 | kind of object, altogether. Because of this, we can't assume self is | |
946 | a gdb.Value object and need to convert it from python as well. */ | |
947 | arg1 = convert_value_from_python (self); | |
08c637de | 948 | if (arg1 == NULL) |
edefe1da TT |
949 | { |
950 | do_cleanups (cleanup); | |
951 | break; | |
952 | } | |
08c637de | 953 | |
7843261b | 954 | arg2 = convert_value_from_python (other); |
08c637de | 955 | if (arg2 == NULL) |
edefe1da TT |
956 | { |
957 | do_cleanups (cleanup); | |
958 | break; | |
959 | } | |
7843261b TJB |
960 | |
961 | switch (opcode) | |
962 | { | |
963 | case VALPY_ADD: | |
964 | { | |
965 | struct type *ltype = value_type (arg1); | |
966 | struct type *rtype = value_type (arg2); | |
967 | ||
968 | CHECK_TYPEDEF (ltype); | |
969 | ltype = STRIP_REFERENCE (ltype); | |
970 | CHECK_TYPEDEF (rtype); | |
971 | rtype = STRIP_REFERENCE (rtype); | |
972 | ||
f7bd0f78 | 973 | handled = 1; |
2497b498 UW |
974 | if (TYPE_CODE (ltype) == TYPE_CODE_PTR |
975 | && is_integral_type (rtype)) | |
976 | res_val = value_ptradd (arg1, value_as_long (arg2)); | |
977 | else if (TYPE_CODE (rtype) == TYPE_CODE_PTR | |
978 | && is_integral_type (ltype)) | |
979 | res_val = value_ptradd (arg2, value_as_long (arg1)); | |
7843261b | 980 | else |
f7bd0f78 SC |
981 | { |
982 | handled = 0; | |
983 | op = BINOP_ADD; | |
984 | } | |
7843261b TJB |
985 | } |
986 | break; | |
987 | case VALPY_SUB: | |
988 | { | |
989 | struct type *ltype = value_type (arg1); | |
990 | struct type *rtype = value_type (arg2); | |
991 | ||
992 | CHECK_TYPEDEF (ltype); | |
993 | ltype = STRIP_REFERENCE (ltype); | |
994 | CHECK_TYPEDEF (rtype); | |
995 | rtype = STRIP_REFERENCE (rtype); | |
996 | ||
f7bd0f78 | 997 | handled = 1; |
2497b498 UW |
998 | if (TYPE_CODE (ltype) == TYPE_CODE_PTR |
999 | && TYPE_CODE (rtype) == TYPE_CODE_PTR) | |
1000 | /* A ptrdiff_t for the target would be preferable here. */ | |
1001 | res_val = value_from_longest (builtin_type_pyint, | |
1002 | value_ptrdiff (arg1, arg2)); | |
1003 | else if (TYPE_CODE (ltype) == TYPE_CODE_PTR | |
1004 | && is_integral_type (rtype)) | |
1005 | res_val = value_ptradd (arg1, - value_as_long (arg2)); | |
7843261b | 1006 | else |
f7bd0f78 SC |
1007 | { |
1008 | handled = 0; | |
1009 | op = BINOP_SUB; | |
1010 | } | |
7843261b TJB |
1011 | } |
1012 | break; | |
1013 | case VALPY_MUL: | |
f7bd0f78 | 1014 | op = BINOP_MUL; |
7843261b TJB |
1015 | break; |
1016 | case VALPY_DIV: | |
f7bd0f78 | 1017 | op = BINOP_DIV; |
7843261b TJB |
1018 | break; |
1019 | case VALPY_REM: | |
f7bd0f78 | 1020 | op = BINOP_REM; |
7843261b TJB |
1021 | break; |
1022 | case VALPY_POW: | |
f7bd0f78 | 1023 | op = BINOP_EXP; |
7843261b | 1024 | break; |
08c637de | 1025 | case VALPY_LSH: |
f7bd0f78 | 1026 | op = BINOP_LSH; |
08c637de TJB |
1027 | break; |
1028 | case VALPY_RSH: | |
f7bd0f78 | 1029 | op = BINOP_RSH; |
08c637de TJB |
1030 | break; |
1031 | case VALPY_BITAND: | |
f7bd0f78 | 1032 | op = BINOP_BITWISE_AND; |
08c637de TJB |
1033 | break; |
1034 | case VALPY_BITOR: | |
f7bd0f78 | 1035 | op = BINOP_BITWISE_IOR; |
08c637de TJB |
1036 | break; |
1037 | case VALPY_BITXOR: | |
f7bd0f78 | 1038 | op = BINOP_BITWISE_XOR; |
08c637de | 1039 | break; |
7843261b | 1040 | } |
888fe1e1 | 1041 | |
f7bd0f78 SC |
1042 | if (!handled) |
1043 | { | |
1044 | if (binop_user_defined_p (op, arg1, arg2)) | |
1045 | res_val = value_x_binop (arg1, arg2, op, OP_NULL, EVAL_NORMAL); | |
1046 | else | |
1047 | res_val = value_binop (arg1, arg2, op); | |
1048 | } | |
1049 | ||
888fe1e1 TT |
1050 | if (res_val) |
1051 | result = value_to_value_object (res_val); | |
1052 | ||
1053 | do_cleanups (cleanup); | |
7843261b TJB |
1054 | } |
1055 | GDB_PY_HANDLE_EXCEPTION (except); | |
1056 | ||
888fe1e1 | 1057 | return result; |
7843261b TJB |
1058 | } |
1059 | ||
1060 | static PyObject * | |
1061 | valpy_add (PyObject *self, PyObject *other) | |
1062 | { | |
1063 | return valpy_binop (VALPY_ADD, self, other); | |
1064 | } | |
1065 | ||
1066 | static PyObject * | |
1067 | valpy_subtract (PyObject *self, PyObject *other) | |
1068 | { | |
1069 | return valpy_binop (VALPY_SUB, self, other); | |
1070 | } | |
1071 | ||
1072 | static PyObject * | |
1073 | valpy_multiply (PyObject *self, PyObject *other) | |
1074 | { | |
1075 | return valpy_binop (VALPY_MUL, self, other); | |
1076 | } | |
1077 | ||
1078 | static PyObject * | |
1079 | valpy_divide (PyObject *self, PyObject *other) | |
1080 | { | |
1081 | return valpy_binop (VALPY_DIV, self, other); | |
1082 | } | |
1083 | ||
1084 | static PyObject * | |
1085 | valpy_remainder (PyObject *self, PyObject *other) | |
1086 | { | |
1087 | return valpy_binop (VALPY_REM, self, other); | |
1088 | } | |
1089 | ||
1090 | static PyObject * | |
1091 | valpy_power (PyObject *self, PyObject *other, PyObject *unused) | |
1092 | { | |
1093 | /* We don't support the ternary form of pow. I don't know how to express | |
1094 | that, so let's just throw NotImplementedError to at least do something | |
1095 | about it. */ | |
1096 | if (unused != Py_None) | |
1097 | { | |
1098 | PyErr_SetString (PyExc_NotImplementedError, | |
1099 | "Invalid operation on gdb.Value."); | |
1100 | return NULL; | |
1101 | } | |
1102 | ||
1103 | return valpy_binop (VALPY_POW, self, other); | |
1104 | } | |
1105 | ||
1106 | static PyObject * | |
1107 | valpy_negative (PyObject *self) | |
1108 | { | |
7843261b | 1109 | volatile struct gdb_exception except; |
888fe1e1 | 1110 | PyObject *result = NULL; |
7843261b TJB |
1111 | |
1112 | TRY_CATCH (except, RETURN_MASK_ALL) | |
1113 | { | |
888fe1e1 TT |
1114 | /* Perhaps overkill, but consistency has some virtue. */ |
1115 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); | |
1116 | struct value *val; | |
1117 | ||
7843261b | 1118 | val = value_neg (((value_object *) self)->value); |
888fe1e1 TT |
1119 | result = value_to_value_object (val); |
1120 | do_cleanups (cleanup); | |
7843261b TJB |
1121 | } |
1122 | GDB_PY_HANDLE_EXCEPTION (except); | |
1123 | ||
888fe1e1 | 1124 | return result; |
7843261b TJB |
1125 | } |
1126 | ||
1127 | static PyObject * | |
1128 | valpy_positive (PyObject *self) | |
1129 | { | |
4e7a5ef5 | 1130 | return value_to_value_object (((value_object *) self)->value); |
7843261b TJB |
1131 | } |
1132 | ||
1133 | static PyObject * | |
1134 | valpy_absolute (PyObject *self) | |
1135 | { | |
22601c15 | 1136 | struct value *value = ((value_object *) self)->value; |
f287c1f3 PM |
1137 | volatile struct gdb_exception except; |
1138 | int isabs = 1; | |
d59b6f6c | 1139 | |
f287c1f3 PM |
1140 | TRY_CATCH (except, RETURN_MASK_ALL) |
1141 | { | |
888fe1e1 TT |
1142 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ()); |
1143 | ||
f287c1f3 PM |
1144 | if (value_less (value, value_zero (value_type (value), not_lval))) |
1145 | isabs = 0; | |
888fe1e1 TT |
1146 | |
1147 | do_cleanups (cleanup); | |
f287c1f3 PM |
1148 | } |
1149 | GDB_PY_HANDLE_EXCEPTION (except); | |
1150 | ||
1151 | if (isabs) | |
7843261b | 1152 | return valpy_positive (self); |
f287c1f3 PM |
1153 | else |
1154 | return valpy_negative (self); | |
7843261b TJB |
1155 | } |
1156 | ||
1157 | /* Implements boolean evaluation of gdb.Value. */ | |
1158 | static int | |
1159 | valpy_nonzero (PyObject *self) | |
1160 | { | |
f287c1f3 | 1161 | volatile struct gdb_exception except; |
7843261b TJB |
1162 | value_object *self_value = (value_object *) self; |
1163 | struct type *type; | |
f287c1f3 | 1164 | int nonzero = 0; /* Appease GCC warning. */ |
7843261b | 1165 | |
f287c1f3 PM |
1166 | TRY_CATCH (except, RETURN_MASK_ALL) |
1167 | { | |
5d9c5995 PM |
1168 | type = check_typedef (value_type (self_value->value)); |
1169 | ||
f287c1f3 PM |
1170 | if (is_integral_type (type) || TYPE_CODE (type) == TYPE_CODE_PTR) |
1171 | nonzero = !!value_as_long (self_value->value); | |
1172 | else if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
1173 | nonzero = value_as_double (self_value->value) != 0; | |
1174 | else if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT) | |
1175 | nonzero = !decimal_is_zero (value_contents (self_value->value), | |
1176 | TYPE_LENGTH (type), | |
1177 | gdbarch_byte_order (get_type_arch (type))); | |
1178 | else | |
1179 | /* All other values are True. */ | |
1180 | nonzero = 1; | |
1181 | } | |
1182 | /* This is not documented in the Python documentation, but if this | |
1183 | function fails, return -1 as slot_nb_nonzero does (the default | |
1184 | Python nonzero function). */ | |
1185 | GDB_PY_SET_HANDLE_EXCEPTION (except); | |
1186 | ||
1187 | return nonzero; | |
7843261b TJB |
1188 | } |
1189 | ||
08c637de | 1190 | /* Implements ~ for value objects. */ |
7843261b | 1191 | static PyObject * |
08c637de | 1192 | valpy_invert (PyObject *self) |
7843261b | 1193 | { |
08c637de | 1194 | struct value *val = NULL; |
7843261b TJB |
1195 | volatile struct gdb_exception except; |
1196 | ||
08c637de | 1197 | TRY_CATCH (except, RETURN_MASK_ALL) |
7843261b | 1198 | { |
08c637de TJB |
1199 | val = value_complement (((value_object *) self)->value); |
1200 | } | |
1201 | GDB_PY_HANDLE_EXCEPTION (except); | |
7843261b | 1202 | |
08c637de TJB |
1203 | return value_to_value_object (val); |
1204 | } | |
7843261b | 1205 | |
08c637de TJB |
1206 | /* Implements left shift for value objects. */ |
1207 | static PyObject * | |
1208 | valpy_lsh (PyObject *self, PyObject *other) | |
1209 | { | |
1210 | return valpy_binop (VALPY_LSH, self, other); | |
1211 | } | |
7843261b | 1212 | |
08c637de TJB |
1213 | /* Implements right shift for value objects. */ |
1214 | static PyObject * | |
1215 | valpy_rsh (PyObject *self, PyObject *other) | |
1216 | { | |
1217 | return valpy_binop (VALPY_RSH, self, other); | |
1218 | } | |
7843261b | 1219 | |
08c637de TJB |
1220 | /* Implements bitwise and for value objects. */ |
1221 | static PyObject * | |
1222 | valpy_and (PyObject *self, PyObject *other) | |
1223 | { | |
1224 | return valpy_binop (VALPY_BITAND, self, other); | |
1225 | } | |
7843261b | 1226 | |
08c637de TJB |
1227 | /* Implements bitwise or for value objects. */ |
1228 | static PyObject * | |
1229 | valpy_or (PyObject *self, PyObject *other) | |
1230 | { | |
1231 | return valpy_binop (VALPY_BITOR, self, other); | |
1232 | } | |
1233 | ||
1234 | /* Implements bitwise xor for value objects. */ | |
1235 | static PyObject * | |
1236 | valpy_xor (PyObject *self, PyObject *other) | |
1237 | { | |
1238 | return valpy_binop (VALPY_BITXOR, self, other); | |
1239 | } | |
1240 | ||
8dc78533 JK |
1241 | /* Implements comparison operations for value objects. Returns NULL on error, |
1242 | with a python exception set. */ | |
08c637de TJB |
1243 | static PyObject * |
1244 | valpy_richcompare (PyObject *self, PyObject *other, int op) | |
1245 | { | |
1246 | int result = 0; | |
08c637de TJB |
1247 | volatile struct gdb_exception except; |
1248 | ||
1249 | if (other == Py_None) | |
7843261b TJB |
1250 | /* Comparing with None is special. From what I can tell, in Python |
1251 | None is smaller than anything else. */ | |
1252 | switch (op) { | |
1253 | case Py_LT: | |
1254 | case Py_LE: | |
1255 | case Py_EQ: | |
1256 | Py_RETURN_FALSE; | |
1257 | case Py_NE: | |
1258 | case Py_GT: | |
1259 | case Py_GE: | |
1260 | Py_RETURN_TRUE; | |
1261 | default: | |
1262 | /* Can't happen. */ | |
1263 | PyErr_SetString (PyExc_NotImplementedError, | |
044c0f87 | 1264 | _("Invalid operation on gdb.Value.")); |
7843261b TJB |
1265 | return NULL; |
1266 | } | |
7843261b TJB |
1267 | |
1268 | TRY_CATCH (except, RETURN_MASK_ALL) | |
1269 | { | |
888fe1e1 TT |
1270 | struct value *value_other, *mark = value_mark (); |
1271 | struct cleanup *cleanup; | |
1272 | ||
08c637de TJB |
1273 | value_other = convert_value_from_python (other); |
1274 | if (value_other == NULL) | |
f02779d8 TT |
1275 | { |
1276 | result = -1; | |
1277 | break; | |
1278 | } | |
08c637de | 1279 | |
888fe1e1 TT |
1280 | cleanup = make_cleanup_value_free_to_mark (mark); |
1281 | ||
7843261b TJB |
1282 | switch (op) { |
1283 | case Py_LT: | |
1284 | result = value_less (((value_object *) self)->value, value_other); | |
1285 | break; | |
1286 | case Py_LE: | |
1287 | result = value_less (((value_object *) self)->value, value_other) | |
1288 | || value_equal (((value_object *) self)->value, value_other); | |
1289 | break; | |
1290 | case Py_EQ: | |
1291 | result = value_equal (((value_object *) self)->value, value_other); | |
1292 | break; | |
1293 | case Py_NE: | |
1294 | result = !value_equal (((value_object *) self)->value, value_other); | |
1295 | break; | |
1296 | case Py_GT: | |
1297 | result = value_less (value_other, ((value_object *) self)->value); | |
1298 | break; | |
1299 | case Py_GE: | |
1300 | result = value_less (value_other, ((value_object *) self)->value) | |
1301 | || value_equal (((value_object *) self)->value, value_other); | |
1302 | break; | |
1303 | default: | |
1304 | /* Can't happen. */ | |
1305 | PyErr_SetString (PyExc_NotImplementedError, | |
044c0f87 | 1306 | _("Invalid operation on gdb.Value.")); |
f02779d8 TT |
1307 | result = -1; |
1308 | break; | |
7843261b | 1309 | } |
888fe1e1 TT |
1310 | |
1311 | do_cleanups (cleanup); | |
7843261b TJB |
1312 | } |
1313 | GDB_PY_HANDLE_EXCEPTION (except); | |
1314 | ||
f02779d8 TT |
1315 | /* In this case, the Python exception has already been set. */ |
1316 | if (result < 0) | |
1317 | return NULL; | |
1318 | ||
7843261b TJB |
1319 | if (result == 1) |
1320 | Py_RETURN_TRUE; | |
1321 | ||
1322 | Py_RETURN_FALSE; | |
1323 | } | |
1324 | ||
9a27f2c6 | 1325 | #ifndef IS_PY3K |
08c637de TJB |
1326 | /* Implements conversion to int. */ |
1327 | static PyObject * | |
1328 | valpy_int (PyObject *self) | |
1329 | { | |
1330 | struct value *value = ((value_object *) self)->value; | |
1331 | struct type *type = value_type (value); | |
1332 | LONGEST l = 0; | |
1333 | volatile struct gdb_exception except; | |
1334 | ||
08c637de TJB |
1335 | TRY_CATCH (except, RETURN_MASK_ALL) |
1336 | { | |
7c245c24 | 1337 | if (!is_integral_type (type)) |
f287c1f3 PM |
1338 | error (_("Cannot convert value to int.")); |
1339 | ||
08c637de TJB |
1340 | l = value_as_long (value); |
1341 | } | |
1342 | GDB_PY_HANDLE_EXCEPTION (except); | |
1343 | ||
74aedc46 | 1344 | return gdb_py_object_from_longest (l); |
08c637de | 1345 | } |
9a27f2c6 | 1346 | #endif |
08c637de TJB |
1347 | |
1348 | /* Implements conversion to long. */ | |
1349 | static PyObject * | |
1350 | valpy_long (PyObject *self) | |
1351 | { | |
1352 | struct value *value = ((value_object *) self)->value; | |
1353 | struct type *type = value_type (value); | |
1354 | LONGEST l = 0; | |
1355 | volatile struct gdb_exception except; | |
1356 | ||
08c637de TJB |
1357 | TRY_CATCH (except, RETURN_MASK_ALL) |
1358 | { | |
f287c1f3 PM |
1359 | CHECK_TYPEDEF (type); |
1360 | ||
7c245c24 JB |
1361 | if (!is_integral_type (type) |
1362 | && TYPE_CODE (type) != TYPE_CODE_PTR) | |
f287c1f3 PM |
1363 | error (_("Cannot convert value to long.")); |
1364 | ||
08c637de TJB |
1365 | l = value_as_long (value); |
1366 | } | |
1367 | GDB_PY_HANDLE_EXCEPTION (except); | |
1368 | ||
74aedc46 | 1369 | return gdb_py_long_from_longest (l); |
08c637de TJB |
1370 | } |
1371 | ||
1372 | /* Implements conversion to float. */ | |
1373 | static PyObject * | |
1374 | valpy_float (PyObject *self) | |
1375 | { | |
1376 | struct value *value = ((value_object *) self)->value; | |
1377 | struct type *type = value_type (value); | |
1378 | double d = 0; | |
1379 | volatile struct gdb_exception except; | |
1380 | ||
08c637de TJB |
1381 | TRY_CATCH (except, RETURN_MASK_ALL) |
1382 | { | |
f287c1f3 PM |
1383 | CHECK_TYPEDEF (type); |
1384 | ||
1385 | if (TYPE_CODE (type) != TYPE_CODE_FLT) | |
1386 | error (_("Cannot convert value to float.")); | |
1387 | ||
08c637de TJB |
1388 | d = value_as_double (value); |
1389 | } | |
1390 | GDB_PY_HANDLE_EXCEPTION (except); | |
1391 | ||
1392 | return PyFloat_FromDouble (d); | |
1393 | } | |
1394 | ||
7843261b TJB |
1395 | /* Returns an object for a value which is released from the all_values chain, |
1396 | so its lifetime is not bound to the execution of a command. */ | |
1397 | PyObject * | |
1398 | value_to_value_object (struct value *val) | |
1399 | { | |
1400 | value_object *val_obj; | |
1401 | ||
1402 | val_obj = PyObject_New (value_object, &value_object_type); | |
1403 | if (val_obj != NULL) | |
1404 | { | |
1405 | val_obj->value = val; | |
e848a8a5 | 1406 | release_value_or_incref (val); |
c0c6f777 | 1407 | val_obj->address = NULL; |
2c74e833 | 1408 | val_obj->type = NULL; |
03f17ccf | 1409 | val_obj->dynamic_type = NULL; |
4e7a5ef5 | 1410 | note_value (val_obj); |
7843261b TJB |
1411 | } |
1412 | ||
1413 | return (PyObject *) val_obj; | |
1414 | } | |
1415 | ||
4e7a5ef5 TT |
1416 | /* Returns a borrowed reference to the struct value corresponding to |
1417 | the given value object. */ | |
a6bac58e TT |
1418 | struct value * |
1419 | value_object_to_value (PyObject *self) | |
1420 | { | |
1421 | value_object *real; | |
d59b6f6c | 1422 | |
a6bac58e TT |
1423 | if (! PyObject_TypeCheck (self, &value_object_type)) |
1424 | return NULL; | |
1425 | real = (value_object *) self; | |
1426 | return real->value; | |
1427 | } | |
1428 | ||
7843261b | 1429 | /* Try to convert a Python value to a gdb value. If the value cannot |
4e7a5ef5 TT |
1430 | be converted, set a Python exception and return NULL. Returns a |
1431 | reference to a new value on the all_values chain. */ | |
7843261b TJB |
1432 | |
1433 | struct value * | |
1434 | convert_value_from_python (PyObject *obj) | |
1435 | { | |
1436 | struct value *value = NULL; /* -Wall */ | |
08c637de TJB |
1437 | volatile struct gdb_exception except; |
1438 | int cmp; | |
7843261b | 1439 | |
08c637de | 1440 | gdb_assert (obj != NULL); |
7843261b | 1441 | |
08c637de | 1442 | TRY_CATCH (except, RETURN_MASK_ALL) |
7843261b | 1443 | { |
256458bc | 1444 | if (PyBool_Check (obj)) |
08c637de TJB |
1445 | { |
1446 | cmp = PyObject_IsTrue (obj); | |
1447 | if (cmp >= 0) | |
1448 | value = value_from_longest (builtin_type_pybool, cmp); | |
1449 | } | |
06ab7b19 PM |
1450 | /* Make a long logic check first. In Python 3.x, internally, |
1451 | all integers are represented as longs. In Python 2.x, there | |
1452 | is still a differentiation internally between a PyInt and a | |
1453 | PyLong. Explicitly do this long check conversion first. In | |
1454 | GDB, for Python 3.x, we #ifdef PyInt = PyLong. This check has | |
1455 | to be done first to ensure we do not lose information in the | |
1456 | conversion process. */ | |
08c637de TJB |
1457 | else if (PyLong_Check (obj)) |
1458 | { | |
1459 | LONGEST l = PyLong_AsLongLong (obj); | |
7843261b | 1460 | |
595939de PM |
1461 | if (PyErr_Occurred ()) |
1462 | { | |
1463 | /* If the error was an overflow, we can try converting to | |
1464 | ULONGEST instead. */ | |
1465 | if (PyErr_ExceptionMatches (PyExc_OverflowError)) | |
1466 | { | |
1467 | PyObject *etype, *evalue, *etraceback, *zero; | |
1468 | ||
1469 | PyErr_Fetch (&etype, &evalue, &etraceback); | |
1470 | zero = PyInt_FromLong (0); | |
1471 | ||
1472 | /* Check whether obj is positive. */ | |
1473 | if (PyObject_RichCompareBool (obj, zero, Py_GT) > 0) | |
1474 | { | |
1475 | ULONGEST ul; | |
1476 | ||
1477 | ul = PyLong_AsUnsignedLongLong (obj); | |
1478 | if (! PyErr_Occurred ()) | |
1479 | value = value_from_ulongest (builtin_type_upylong, ul); | |
1480 | } | |
1481 | else | |
1482 | /* There's nothing we can do. */ | |
1483 | PyErr_Restore (etype, evalue, etraceback); | |
1484 | ||
1485 | Py_DECREF (zero); | |
1486 | } | |
1487 | } | |
1488 | else | |
08c637de TJB |
1489 | value = value_from_longest (builtin_type_pylong, l); |
1490 | } | |
06ab7b19 PM |
1491 | else if (PyInt_Check (obj)) |
1492 | { | |
1493 | long l = PyInt_AsLong (obj); | |
1494 | ||
1495 | if (! PyErr_Occurred ()) | |
1496 | value = value_from_longest (builtin_type_pyint, l); | |
1497 | } | |
08c637de TJB |
1498 | else if (PyFloat_Check (obj)) |
1499 | { | |
1500 | double d = PyFloat_AsDouble (obj); | |
7843261b | 1501 | |
08c637de TJB |
1502 | if (! PyErr_Occurred ()) |
1503 | value = value_from_double (builtin_type_pyfloat, d); | |
1504 | } | |
1505 | else if (gdbpy_is_string (obj)) | |
1506 | { | |
1507 | char *s; | |
1508 | ||
1509 | s = python_string_to_target_string (obj); | |
1510 | if (s != NULL) | |
1511 | { | |
9bc3523d TT |
1512 | struct cleanup *old; |
1513 | ||
08c637de | 1514 | old = make_cleanup (xfree, s); |
3b7538c0 | 1515 | value = value_cstring (s, strlen (s), builtin_type_pychar); |
08c637de TJB |
1516 | do_cleanups (old); |
1517 | } | |
1518 | } | |
1519 | else if (PyObject_TypeCheck (obj, &value_object_type)) | |
cc924cad | 1520 | value = value_copy (((value_object *) obj)->value); |
be759fcf PM |
1521 | else if (gdbpy_is_lazy_string (obj)) |
1522 | { | |
1523 | PyObject *result; | |
d59b6f6c | 1524 | |
fb6a3ed3 | 1525 | result = PyObject_CallMethodObjArgs (obj, gdbpy_value_cst, NULL); |
be759fcf PM |
1526 | value = value_copy (((value_object *) result)->value); |
1527 | } | |
08c637de | 1528 | else |
9a27f2c6 PK |
1529 | #ifdef IS_PY3K |
1530 | PyErr_Format (PyExc_TypeError, | |
1531 | _("Could not convert Python object: %S."), obj); | |
1532 | #else | |
9a2b4c1b MS |
1533 | PyErr_Format (PyExc_TypeError, |
1534 | _("Could not convert Python object: %s."), | |
08c637de | 1535 | PyString_AsString (PyObject_Str (obj))); |
9a27f2c6 | 1536 | #endif |
08c637de TJB |
1537 | } |
1538 | if (except.reason < 0) | |
1539 | { | |
1540 | PyErr_Format (except.reason == RETURN_QUIT | |
1541 | ? PyExc_KeyboardInterrupt : PyExc_RuntimeError, | |
1542 | "%s", except.message); | |
1543 | return NULL; | |
1544 | } | |
7843261b TJB |
1545 | |
1546 | return value; | |
1547 | } | |
1548 | ||
1549 | /* Returns value object in the ARGth position in GDB's history. */ | |
1550 | PyObject * | |
08c637de | 1551 | gdbpy_history (PyObject *self, PyObject *args) |
7843261b TJB |
1552 | { |
1553 | int i; | |
1554 | struct value *res_val = NULL; /* Initialize to appease gcc warning. */ | |
1555 | volatile struct gdb_exception except; | |
1556 | ||
1557 | if (!PyArg_ParseTuple (args, "i", &i)) | |
1558 | return NULL; | |
1559 | ||
1560 | TRY_CATCH (except, RETURN_MASK_ALL) | |
1561 | { | |
1562 | res_val = access_value_history (i); | |
1563 | } | |
1564 | GDB_PY_HANDLE_EXCEPTION (except); | |
1565 | ||
1566 | return value_to_value_object (res_val); | |
1567 | } | |
1568 | ||
595939de PM |
1569 | /* Returns 1 in OBJ is a gdb.Value object, 0 otherwise. */ |
1570 | ||
1571 | int | |
1572 | gdbpy_is_value_object (PyObject *obj) | |
1573 | { | |
1574 | return PyObject_TypeCheck (obj, &value_object_type); | |
1575 | } | |
1576 | ||
999633ed | 1577 | int |
7843261b TJB |
1578 | gdbpy_initialize_values (void) |
1579 | { | |
7843261b | 1580 | if (PyType_Ready (&value_object_type) < 0) |
999633ed | 1581 | return -1; |
7843261b | 1582 | |
aa36459a TT |
1583 | return gdb_pymodule_addobject (gdb_module, "Value", |
1584 | (PyObject *) &value_object_type); | |
7843261b TJB |
1585 | } |
1586 | ||
2c74e833 TT |
1587 | \f |
1588 | ||
def2b000 | 1589 | static PyGetSetDef value_object_getset[] = { |
c0c6f777 TJB |
1590 | { "address", valpy_get_address, NULL, "The address of the value.", |
1591 | NULL }, | |
def2b000 | 1592 | { "is_optimized_out", valpy_get_is_optimized_out, NULL, |
9a2b4c1b MS |
1593 | "Boolean telling whether the value is optimized " |
1594 | "out (i.e., not available).", | |
def2b000 | 1595 | NULL }, |
2c74e833 | 1596 | { "type", valpy_get_type, NULL, "Type of the value.", NULL }, |
03f17ccf TT |
1597 | { "dynamic_type", valpy_get_dynamic_type, NULL, |
1598 | "Dynamic type of the value.", NULL }, | |
913460fc PK |
1599 | { "is_lazy", valpy_get_is_lazy, NULL, |
1600 | "Boolean telling whether the value is lazy (not fetched yet\n\ | |
1601 | from the inferior). A lazy value is fetched when needed, or when\n\ | |
1602 | the \"fetch_lazy()\" method is called.", NULL }, | |
def2b000 TJB |
1603 | {NULL} /* Sentinel */ |
1604 | }; | |
1605 | ||
f9176c46 | 1606 | static PyMethodDef value_object_methods[] = { |
2c74e833 | 1607 | { "cast", valpy_cast, METH_VARARGS, "Cast the value to the supplied type." }, |
f9ffd4bb TT |
1608 | { "dynamic_cast", valpy_dynamic_cast, METH_VARARGS, |
1609 | "dynamic_cast (gdb.Type) -> gdb.Value\n\ | |
1610 | Cast the value to the supplied type, as if by the C++ dynamic_cast operator." | |
1611 | }, | |
1612 | { "reinterpret_cast", valpy_reinterpret_cast, METH_VARARGS, | |
1613 | "reinterpret_cast (gdb.Type) -> gdb.Value\n\ | |
1614 | Cast the value to the supplied type, as if by the C++\n\ | |
1615 | reinterpret_cast operator." | |
1616 | }, | |
f9176c46 | 1617 | { "dereference", valpy_dereference, METH_NOARGS, "Dereferences the value." }, |
7b282c5a SCR |
1618 | { "referenced_value", valpy_referenced_value, METH_NOARGS, |
1619 | "Return the value referenced by a TYPE_CODE_REF or TYPE_CODE_PTR value." }, | |
9a2b4c1b MS |
1620 | { "lazy_string", (PyCFunction) valpy_lazy_string, |
1621 | METH_VARARGS | METH_KEYWORDS, | |
be759fcf PM |
1622 | "lazy_string ([encoding] [, length]) -> lazy_string\n\ |
1623 | Return a lazy string representation of the value." }, | |
cc924cad | 1624 | { "string", (PyCFunction) valpy_string, METH_VARARGS | METH_KEYWORDS, |
fbb8f299 | 1625 | "string ([encoding] [, errors] [, length]) -> string\n\ |
cc924cad | 1626 | Return Unicode string representation of the value." }, |
256458bc | 1627 | { "fetch_lazy", valpy_fetch_lazy, METH_NOARGS, |
913460fc | 1628 | "Fetches the value from the inferior, if it was lazy." }, |
f9176c46 PA |
1629 | {NULL} /* Sentinel */ |
1630 | }; | |
1631 | ||
1632 | static PyNumberMethods value_object_as_number = { | |
1633 | valpy_add, | |
1634 | valpy_subtract, | |
1635 | valpy_multiply, | |
9a27f2c6 | 1636 | #ifndef IS_PY3K |
f9176c46 | 1637 | valpy_divide, |
9a27f2c6 | 1638 | #endif |
f9176c46 PA |
1639 | valpy_remainder, |
1640 | NULL, /* nb_divmod */ | |
1641 | valpy_power, /* nb_power */ | |
1642 | valpy_negative, /* nb_negative */ | |
1643 | valpy_positive, /* nb_positive */ | |
1644 | valpy_absolute, /* nb_absolute */ | |
08c637de TJB |
1645 | valpy_nonzero, /* nb_nonzero */ |
1646 | valpy_invert, /* nb_invert */ | |
1647 | valpy_lsh, /* nb_lshift */ | |
1648 | valpy_rsh, /* nb_rshift */ | |
1649 | valpy_and, /* nb_and */ | |
1650 | valpy_xor, /* nb_xor */ | |
1651 | valpy_or, /* nb_or */ | |
9a27f2c6 PK |
1652 | #ifdef IS_PY3K |
1653 | valpy_long, /* nb_int */ | |
1654 | NULL, /* reserved */ | |
1655 | #else | |
08c637de TJB |
1656 | NULL, /* nb_coerce */ |
1657 | valpy_int, /* nb_int */ | |
1658 | valpy_long, /* nb_long */ | |
9a27f2c6 | 1659 | #endif |
08c637de | 1660 | valpy_float, /* nb_float */ |
9a27f2c6 | 1661 | #ifndef IS_PY3K |
08c637de | 1662 | NULL, /* nb_oct */ |
9a27f2c6 PK |
1663 | NULL, /* nb_hex */ |
1664 | #endif | |
1665 | NULL, /* nb_inplace_add */ | |
1666 | NULL, /* nb_inplace_subtract */ | |
1667 | NULL, /* nb_inplace_multiply */ | |
1668 | NULL, /* nb_inplace_remainder */ | |
1669 | NULL, /* nb_inplace_power */ | |
1670 | NULL, /* nb_inplace_lshift */ | |
1671 | NULL, /* nb_inplace_rshift */ | |
1672 | NULL, /* nb_inplace_and */ | |
1673 | NULL, /* nb_inplace_xor */ | |
1674 | NULL, /* nb_inplace_or */ | |
1675 | NULL, /* nb_floor_divide */ | |
1676 | valpy_divide /* nb_true_divide */ | |
f9176c46 PA |
1677 | }; |
1678 | ||
1679 | static PyMappingMethods value_object_as_mapping = { | |
1680 | valpy_length, | |
1681 | valpy_getitem, | |
1682 | valpy_setitem | |
1683 | }; | |
1684 | ||
1685 | PyTypeObject value_object_type = { | |
9a27f2c6 | 1686 | PyVarObject_HEAD_INIT (NULL, 0) |
f9176c46 PA |
1687 | "gdb.Value", /*tp_name*/ |
1688 | sizeof (value_object), /*tp_basicsize*/ | |
1689 | 0, /*tp_itemsize*/ | |
1690 | valpy_dealloc, /*tp_dealloc*/ | |
1691 | 0, /*tp_print*/ | |
1692 | 0, /*tp_getattr*/ | |
1693 | 0, /*tp_setattr*/ | |
1694 | 0, /*tp_compare*/ | |
1695 | 0, /*tp_repr*/ | |
1696 | &value_object_as_number, /*tp_as_number*/ | |
1697 | 0, /*tp_as_sequence*/ | |
1698 | &value_object_as_mapping, /*tp_as_mapping*/ | |
88d4aea7 | 1699 | valpy_hash, /*tp_hash*/ |
5374244e | 1700 | valpy_call, /*tp_call*/ |
f9176c46 PA |
1701 | valpy_str, /*tp_str*/ |
1702 | 0, /*tp_getattro*/ | |
1703 | 0, /*tp_setattro*/ | |
1704 | 0, /*tp_as_buffer*/ | |
9a2b4c1b MS |
1705 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_CHECKTYPES |
1706 | | Py_TPFLAGS_BASETYPE, /*tp_flags*/ | |
f9176c46 PA |
1707 | "GDB value object", /* tp_doc */ |
1708 | 0, /* tp_traverse */ | |
1709 | 0, /* tp_clear */ | |
1710 | valpy_richcompare, /* tp_richcompare */ | |
1711 | 0, /* tp_weaklistoffset */ | |
1712 | 0, /* tp_iter */ | |
1713 | 0, /* tp_iternext */ | |
08c637de TJB |
1714 | value_object_methods, /* tp_methods */ |
1715 | 0, /* tp_members */ | |
def2b000 | 1716 | value_object_getset, /* tp_getset */ |
08c637de TJB |
1717 | 0, /* tp_base */ |
1718 | 0, /* tp_dict */ | |
1719 | 0, /* tp_descr_get */ | |
1720 | 0, /* tp_descr_set */ | |
1721 | 0, /* tp_dictoffset */ | |
1722 | 0, /* tp_init */ | |
1723 | 0, /* tp_alloc */ | |
1724 | valpy_new /* tp_new */ | |
f9176c46 | 1725 | }; |