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f3e9a817 PM |
1 | /* Python interface to symbols. |
2 | ||
0b302171 | 3 | Copyright (C) 2008-2012 Free Software Foundation, Inc. |
f3e9a817 PM |
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 "block.h" | |
22 | #include "exceptions.h" | |
23 | #include "frame.h" | |
24 | #include "symtab.h" | |
25 | #include "python-internal.h" | |
26 | #include "objfiles.h" | |
27 | ||
28 | typedef struct sympy_symbol_object { | |
29 | PyObject_HEAD | |
30 | /* The GDB symbol structure this object is wrapping. */ | |
31 | struct symbol *symbol; | |
32 | /* A symbol object is associated with an objfile, so keep track with | |
33 | doubly-linked list, rooted in the objfile. This lets us | |
34 | invalidate the underlying struct symbol when the objfile is | |
35 | deleted. */ | |
36 | struct sympy_symbol_object *prev; | |
37 | struct sympy_symbol_object *next; | |
38 | } symbol_object; | |
39 | ||
40 | /* Require a valid symbol. All access to symbol_object->symbol should be | |
41 | gated by this call. */ | |
42 | #define SYMPY_REQUIRE_VALID(symbol_obj, symbol) \ | |
43 | do { \ | |
44 | symbol = symbol_object_to_symbol (symbol_obj); \ | |
45 | if (symbol == NULL) \ | |
46 | { \ | |
47 | PyErr_SetString (PyExc_RuntimeError, \ | |
48 | _("Symbol is invalid.")); \ | |
49 | return NULL; \ | |
50 | } \ | |
51 | } while (0) | |
52 | ||
53 | static const struct objfile_data *sympy_objfile_data_key; | |
54 | ||
55 | static PyObject * | |
56 | sympy_str (PyObject *self) | |
57 | { | |
58 | PyObject *result; | |
59 | struct symbol *symbol = NULL; | |
60 | ||
61 | SYMPY_REQUIRE_VALID (self, symbol); | |
62 | ||
63 | result = PyString_FromString (SYMBOL_PRINT_NAME (symbol)); | |
64 | ||
65 | return result; | |
66 | } | |
67 | ||
457e09f0 DE |
68 | static PyObject * |
69 | sympy_get_type (PyObject *self, void *closure) | |
70 | { | |
71 | struct symbol *symbol = NULL; | |
72 | ||
73 | SYMPY_REQUIRE_VALID (self, symbol); | |
74 | ||
75 | if (SYMBOL_TYPE (symbol) == NULL) | |
76 | { | |
77 | Py_INCREF (Py_None); | |
78 | return Py_None; | |
79 | } | |
80 | ||
81 | return type_to_type_object (SYMBOL_TYPE (symbol)); | |
82 | } | |
83 | ||
f3e9a817 PM |
84 | static PyObject * |
85 | sympy_get_symtab (PyObject *self, void *closure) | |
86 | { | |
87 | struct symbol *symbol = NULL; | |
88 | ||
89 | SYMPY_REQUIRE_VALID (self, symbol); | |
90 | ||
91 | return symtab_to_symtab_object (SYMBOL_SYMTAB (symbol)); | |
92 | } | |
93 | ||
94 | static PyObject * | |
95 | sympy_get_name (PyObject *self, void *closure) | |
96 | { | |
97 | struct symbol *symbol = NULL; | |
98 | ||
99 | SYMPY_REQUIRE_VALID (self, symbol); | |
100 | ||
101 | return PyString_FromString (SYMBOL_NATURAL_NAME (symbol)); | |
102 | } | |
103 | ||
104 | static PyObject * | |
105 | sympy_get_linkage_name (PyObject *self, void *closure) | |
106 | { | |
107 | struct symbol *symbol = NULL; | |
108 | ||
109 | SYMPY_REQUIRE_VALID (self, symbol); | |
110 | ||
111 | return PyString_FromString (SYMBOL_LINKAGE_NAME (symbol)); | |
112 | } | |
113 | ||
114 | static PyObject * | |
115 | sympy_get_print_name (PyObject *self, void *closure) | |
116 | { | |
117 | struct symbol *symbol = NULL; | |
118 | ||
119 | SYMPY_REQUIRE_VALID (self, symbol); | |
120 | ||
121 | return sympy_str (self); | |
122 | } | |
123 | ||
124 | static PyObject * | |
125 | sympy_get_addr_class (PyObject *self, void *closure) | |
126 | { | |
127 | struct symbol *symbol = NULL; | |
128 | ||
129 | SYMPY_REQUIRE_VALID (self, symbol); | |
130 | ||
131 | return PyInt_FromLong (SYMBOL_CLASS (symbol)); | |
132 | } | |
133 | ||
134 | static PyObject * | |
135 | sympy_is_argument (PyObject *self, void *closure) | |
136 | { | |
137 | struct symbol *symbol = NULL; | |
138 | ||
139 | SYMPY_REQUIRE_VALID (self, symbol); | |
140 | ||
141 | return PyBool_FromLong (SYMBOL_IS_ARGUMENT (symbol)); | |
142 | } | |
143 | ||
144 | static PyObject * | |
145 | sympy_is_constant (PyObject *self, void *closure) | |
146 | { | |
147 | struct symbol *symbol = NULL; | |
148 | enum address_class class; | |
149 | ||
150 | SYMPY_REQUIRE_VALID (self, symbol); | |
151 | ||
152 | class = SYMBOL_CLASS (symbol); | |
153 | ||
154 | return PyBool_FromLong (class == LOC_CONST || class == LOC_CONST_BYTES); | |
155 | } | |
156 | ||
157 | static PyObject * | |
158 | sympy_is_function (PyObject *self, void *closure) | |
159 | { | |
160 | struct symbol *symbol = NULL; | |
161 | enum address_class class; | |
162 | ||
163 | SYMPY_REQUIRE_VALID (self, symbol); | |
164 | ||
165 | class = SYMBOL_CLASS (symbol); | |
166 | ||
167 | return PyBool_FromLong (class == LOC_BLOCK); | |
168 | } | |
169 | ||
170 | static PyObject * | |
171 | sympy_is_variable (PyObject *self, void *closure) | |
172 | { | |
173 | struct symbol *symbol = NULL; | |
174 | enum address_class class; | |
175 | ||
176 | SYMPY_REQUIRE_VALID (self, symbol); | |
177 | ||
178 | class = SYMBOL_CLASS (symbol); | |
179 | ||
180 | return PyBool_FromLong (!SYMBOL_IS_ARGUMENT (symbol) | |
181 | && (class == LOC_LOCAL || class == LOC_REGISTER | |
182 | || class == LOC_STATIC || class == LOC_COMPUTED | |
183 | || class == LOC_OPTIMIZED_OUT)); | |
184 | } | |
185 | ||
f0823d2c TT |
186 | /* Implementation of gdb.Symbol.needs_frame -> Boolean. |
187 | Returns true iff the symbol needs a frame for evaluation. */ | |
188 | ||
189 | static PyObject * | |
190 | sympy_needs_frame (PyObject *self, void *closure) | |
191 | { | |
192 | struct symbol *symbol = NULL; | |
193 | volatile struct gdb_exception except; | |
194 | int result = 0; | |
195 | ||
196 | SYMPY_REQUIRE_VALID (self, symbol); | |
197 | ||
198 | TRY_CATCH (except, RETURN_MASK_ALL) | |
199 | { | |
200 | result = symbol_read_needs_frame (symbol); | |
201 | } | |
202 | GDB_PY_HANDLE_EXCEPTION (except); | |
203 | ||
204 | if (result) | |
205 | Py_RETURN_TRUE; | |
206 | Py_RETURN_FALSE; | |
207 | } | |
208 | ||
64e7d9dd TT |
209 | /* Implementation of gdb.Symbol.line -> int. |
210 | Returns the line number at which the symbol was defined. */ | |
211 | ||
212 | static PyObject * | |
213 | sympy_line (PyObject *self, void *closure) | |
214 | { | |
215 | struct symbol *symbol = NULL; | |
216 | ||
217 | SYMPY_REQUIRE_VALID (self, symbol); | |
218 | ||
219 | return PyInt_FromLong (SYMBOL_LINE (symbol)); | |
220 | } | |
221 | ||
29703da4 PM |
222 | /* Implementation of gdb.Symbol.is_valid (self) -> Boolean. |
223 | Returns True if this Symbol still exists in GDB. */ | |
224 | ||
225 | static PyObject * | |
226 | sympy_is_valid (PyObject *self, PyObject *args) | |
227 | { | |
228 | struct symbol *symbol = NULL; | |
229 | ||
230 | symbol = symbol_object_to_symbol (self); | |
231 | if (symbol == NULL) | |
232 | Py_RETURN_FALSE; | |
233 | ||
234 | Py_RETURN_TRUE; | |
235 | } | |
236 | ||
f0823d2c TT |
237 | /* Implementation of gdb.Symbol.value (self[, frame]) -> gdb.Value. Returns |
238 | the value of the symbol, or an error in various circumstances. */ | |
239 | ||
240 | static PyObject * | |
241 | sympy_value (PyObject *self, PyObject *args) | |
242 | { | |
243 | struct symbol *symbol = NULL; | |
244 | struct frame_info *frame_info = NULL; | |
245 | PyObject *frame_obj = NULL; | |
246 | struct value *value = NULL; | |
247 | volatile struct gdb_exception except; | |
248 | ||
249 | if (!PyArg_ParseTuple (args, "|O", &frame_obj)) | |
250 | return NULL; | |
251 | ||
252 | if (frame_obj != NULL && !PyObject_TypeCheck (frame_obj, &frame_object_type)) | |
253 | { | |
254 | PyErr_SetString (PyExc_TypeError, "argument is not a frame"); | |
255 | return NULL; | |
256 | } | |
257 | ||
258 | SYMPY_REQUIRE_VALID (self, symbol); | |
259 | if (SYMBOL_CLASS (symbol) == LOC_TYPEDEF) | |
260 | { | |
261 | PyErr_SetString (PyExc_TypeError, "cannot get the value of a typedef"); | |
262 | return NULL; | |
263 | } | |
264 | ||
265 | TRY_CATCH (except, RETURN_MASK_ALL) | |
266 | { | |
267 | if (frame_obj != NULL) | |
268 | { | |
269 | frame_info = frame_object_to_frame_info (frame_obj); | |
270 | if (frame_info == NULL) | |
c6910659 | 271 | error (_("invalid frame")); |
f0823d2c TT |
272 | } |
273 | ||
274 | if (symbol_read_needs_frame (symbol) && frame_info == NULL) | |
c6910659 | 275 | error (_("symbol requires a frame to compute its value")); |
f0823d2c TT |
276 | |
277 | value = read_var_value (symbol, frame_info); | |
278 | } | |
279 | GDB_PY_HANDLE_EXCEPTION (except); | |
280 | ||
281 | return value_to_value_object (value); | |
282 | } | |
283 | ||
f3e9a817 PM |
284 | /* Given a symbol, and a symbol_object that has previously been |
285 | allocated and initialized, populate the symbol_object with the | |
286 | struct symbol data. Also, register the symbol_object life-cycle | |
b021a221 | 287 | with the life-cycle of the object file associated with this |
f3e9a817 PM |
288 | symbol, if needed. */ |
289 | static void | |
290 | set_symbol (symbol_object *obj, struct symbol *symbol) | |
291 | { | |
292 | obj->symbol = symbol; | |
293 | obj->prev = NULL; | |
294 | if (SYMBOL_SYMTAB (symbol)) | |
295 | { | |
296 | obj->next = objfile_data (SYMBOL_SYMTAB (symbol)->objfile, | |
297 | sympy_objfile_data_key); | |
298 | ||
299 | if (obj->next) | |
300 | obj->next->prev = obj; | |
301 | set_objfile_data (SYMBOL_SYMTAB (symbol)->objfile, | |
302 | sympy_objfile_data_key, obj); | |
303 | } | |
304 | else | |
305 | obj->next = NULL; | |
306 | } | |
307 | ||
308 | /* Create a new symbol object (gdb.Symbol) that encapsulates the struct | |
309 | symbol object from GDB. */ | |
310 | PyObject * | |
311 | symbol_to_symbol_object (struct symbol *sym) | |
312 | { | |
313 | symbol_object *sym_obj; | |
314 | ||
315 | sym_obj = PyObject_New (symbol_object, &symbol_object_type); | |
316 | if (sym_obj) | |
317 | set_symbol (sym_obj, sym); | |
318 | ||
319 | return (PyObject *) sym_obj; | |
320 | } | |
321 | ||
322 | /* Return the symbol that is wrapped by this symbol object. */ | |
323 | struct symbol * | |
324 | symbol_object_to_symbol (PyObject *obj) | |
325 | { | |
326 | if (! PyObject_TypeCheck (obj, &symbol_object_type)) | |
327 | return NULL; | |
328 | return ((symbol_object *) obj)->symbol; | |
329 | } | |
330 | ||
331 | static void | |
332 | sympy_dealloc (PyObject *obj) | |
333 | { | |
334 | symbol_object *sym_obj = (symbol_object *) obj; | |
335 | ||
336 | if (sym_obj->prev) | |
337 | sym_obj->prev->next = sym_obj->next; | |
338 | else if (SYMBOL_SYMTAB (sym_obj->symbol)) | |
339 | { | |
340 | set_objfile_data (SYMBOL_SYMTAB (sym_obj->symbol)->objfile, | |
341 | sympy_objfile_data_key, sym_obj->next); | |
342 | } | |
343 | if (sym_obj->next) | |
344 | sym_obj->next->prev = sym_obj->prev; | |
345 | sym_obj->symbol = NULL; | |
346 | } | |
347 | ||
348 | /* Implementation of | |
349 | gdb.lookup_symbol (name [, block] [, domain]) -> (symbol, is_field_of_this) | |
350 | A tuple with 2 elements is always returned. The first is the symbol | |
351 | object or None, the second is a boolean with the value of | |
352 | is_a_field_of_this (see comment in lookup_symbol_in_language). */ | |
6e6fbe60 | 353 | |
f3e9a817 PM |
354 | PyObject * |
355 | gdbpy_lookup_symbol (PyObject *self, PyObject *args, PyObject *kw) | |
356 | { | |
357 | int domain = VAR_DOMAIN, is_a_field_of_this = 0; | |
358 | const char *name; | |
359 | static char *keywords[] = { "name", "block", "domain", NULL }; | |
76dce0be | 360 | struct symbol *symbol = NULL; |
f3e9a817 | 361 | PyObject *block_obj = NULL, *ret_tuple, *sym_obj, *bool_obj; |
9df2fbc4 | 362 | const struct block *block = NULL; |
76dce0be | 363 | volatile struct gdb_exception except; |
f3e9a817 PM |
364 | |
365 | if (! PyArg_ParseTupleAndKeywords (args, kw, "s|O!i", keywords, &name, | |
366 | &block_object_type, &block_obj, &domain)) | |
367 | return NULL; | |
368 | ||
369 | if (block_obj) | |
370 | block = block_object_to_block (block_obj); | |
371 | else | |
372 | { | |
373 | struct frame_info *selected_frame; | |
374 | volatile struct gdb_exception except; | |
375 | ||
376 | TRY_CATCH (except, RETURN_MASK_ALL) | |
377 | { | |
626e7282 JK |
378 | selected_frame = get_selected_frame (_("No frame selected.")); |
379 | block = get_frame_block (selected_frame, NULL); | |
f3e9a817 PM |
380 | } |
381 | GDB_PY_HANDLE_EXCEPTION (except); | |
382 | } | |
383 | ||
76dce0be PM |
384 | TRY_CATCH (except, RETURN_MASK_ALL) |
385 | { | |
386 | symbol = lookup_symbol (name, block, domain, &is_a_field_of_this); | |
387 | } | |
388 | GDB_PY_HANDLE_EXCEPTION (except); | |
f3e9a817 PM |
389 | |
390 | ret_tuple = PyTuple_New (2); | |
391 | if (!ret_tuple) | |
392 | return NULL; | |
393 | ||
394 | if (symbol) | |
395 | { | |
396 | sym_obj = symbol_to_symbol_object (symbol); | |
397 | if (!sym_obj) | |
398 | { | |
399 | Py_DECREF (ret_tuple); | |
400 | return NULL; | |
401 | } | |
402 | } | |
403 | else | |
404 | { | |
405 | sym_obj = Py_None; | |
406 | Py_INCREF (Py_None); | |
407 | } | |
408 | PyTuple_SET_ITEM (ret_tuple, 0, sym_obj); | |
409 | ||
410 | bool_obj = is_a_field_of_this? Py_True : Py_False; | |
411 | Py_INCREF (bool_obj); | |
412 | PyTuple_SET_ITEM (ret_tuple, 1, bool_obj); | |
413 | ||
414 | return ret_tuple; | |
415 | } | |
416 | ||
6e6fbe60 DE |
417 | /* Implementation of |
418 | gdb.lookup_global_symbol (name [, domain]) -> symbol or None. */ | |
419 | ||
420 | PyObject * | |
421 | gdbpy_lookup_global_symbol (PyObject *self, PyObject *args, PyObject *kw) | |
422 | { | |
423 | int domain = VAR_DOMAIN; | |
424 | const char *name; | |
425 | static char *keywords[] = { "name", "domain", NULL }; | |
76dce0be | 426 | struct symbol *symbol = NULL; |
6e6fbe60 | 427 | PyObject *sym_obj; |
76dce0be | 428 | volatile struct gdb_exception except; |
6e6fbe60 DE |
429 | |
430 | if (! PyArg_ParseTupleAndKeywords (args, kw, "s|i", keywords, &name, | |
431 | &domain)) | |
432 | return NULL; | |
433 | ||
76dce0be PM |
434 | TRY_CATCH (except, RETURN_MASK_ALL) |
435 | { | |
436 | symbol = lookup_symbol_global (name, NULL, domain); | |
437 | } | |
438 | GDB_PY_HANDLE_EXCEPTION (except); | |
6e6fbe60 DE |
439 | |
440 | if (symbol) | |
441 | { | |
442 | sym_obj = symbol_to_symbol_object (symbol); | |
443 | if (!sym_obj) | |
444 | return NULL; | |
445 | } | |
446 | else | |
447 | { | |
448 | sym_obj = Py_None; | |
449 | Py_INCREF (Py_None); | |
450 | } | |
451 | ||
452 | return sym_obj; | |
453 | } | |
454 | ||
f3e9a817 PM |
455 | /* This function is called when an objfile is about to be freed. |
456 | Invalidate the symbol as further actions on the symbol would result | |
457 | in bad data. All access to obj->symbol should be gated by | |
458 | SYMPY_REQUIRE_VALID which will raise an exception on invalid | |
459 | symbols. */ | |
460 | static void | |
461 | del_objfile_symbols (struct objfile *objfile, void *datum) | |
462 | { | |
463 | symbol_object *obj = datum; | |
464 | while (obj) | |
465 | { | |
466 | symbol_object *next = obj->next; | |
467 | ||
468 | obj->symbol = NULL; | |
469 | obj->next = NULL; | |
470 | obj->prev = NULL; | |
471 | ||
472 | obj = next; | |
473 | } | |
474 | } | |
475 | ||
476 | void | |
477 | gdbpy_initialize_symbols (void) | |
478 | { | |
479 | if (PyType_Ready (&symbol_object_type) < 0) | |
480 | return; | |
481 | ||
482 | /* Register an objfile "free" callback so we can properly | |
483 | invalidate symbol when an object file that is about to be | |
484 | deleted. */ | |
485 | sympy_objfile_data_key | |
486 | = register_objfile_data_with_cleanup (NULL, del_objfile_symbols); | |
487 | ||
488 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_UNDEF", LOC_UNDEF); | |
489 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_CONST", LOC_CONST); | |
490 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_STATIC", LOC_STATIC); | |
491 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_REGISTER", LOC_REGISTER); | |
492 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_ARG", LOC_ARG); | |
493 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_REF_ARG", LOC_REF_ARG); | |
494 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_LOCAL", LOC_LOCAL); | |
495 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_TYPEDEF", LOC_TYPEDEF); | |
496 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_LABEL", LOC_LABEL); | |
497 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_BLOCK", LOC_BLOCK); | |
498 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_CONST_BYTES", | |
499 | LOC_CONST_BYTES); | |
9a2b4c1b MS |
500 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_UNRESOLVED", |
501 | LOC_UNRESOLVED); | |
f3e9a817 PM |
502 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_OPTIMIZED_OUT", |
503 | LOC_OPTIMIZED_OUT); | |
504 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_COMPUTED", LOC_COMPUTED); | |
505 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LOC_REGPARM_ADDR", | |
506 | LOC_REGPARM_ADDR); | |
507 | PyModule_AddIntConstant (gdb_module, "SYMBOL_UNDEF_DOMAIN", UNDEF_DOMAIN); | |
508 | PyModule_AddIntConstant (gdb_module, "SYMBOL_VAR_DOMAIN", VAR_DOMAIN); | |
509 | PyModule_AddIntConstant (gdb_module, "SYMBOL_STRUCT_DOMAIN", STRUCT_DOMAIN); | |
510 | PyModule_AddIntConstant (gdb_module, "SYMBOL_LABEL_DOMAIN", LABEL_DOMAIN); | |
511 | PyModule_AddIntConstant (gdb_module, "SYMBOL_VARIABLES_DOMAIN", | |
512 | VARIABLES_DOMAIN); | |
513 | PyModule_AddIntConstant (gdb_module, "SYMBOL_FUNCTIONS_DOMAIN", | |
514 | FUNCTIONS_DOMAIN); | |
515 | PyModule_AddIntConstant (gdb_module, "SYMBOL_TYPES_DOMAIN", TYPES_DOMAIN); | |
516 | ||
517 | Py_INCREF (&symbol_object_type); | |
518 | PyModule_AddObject (gdb_module, "Symbol", (PyObject *) &symbol_object_type); | |
519 | } | |
520 | ||
521 | \f | |
522 | ||
523 | static PyGetSetDef symbol_object_getset[] = { | |
457e09f0 DE |
524 | { "type", sympy_get_type, NULL, |
525 | "Type of the symbol.", NULL }, | |
f3e9a817 PM |
526 | { "symtab", sympy_get_symtab, NULL, |
527 | "Symbol table in which the symbol appears.", NULL }, | |
528 | { "name", sympy_get_name, NULL, | |
529 | "Name of the symbol, as it appears in the source code.", NULL }, | |
530 | { "linkage_name", sympy_get_linkage_name, NULL, | |
9a2b4c1b MS |
531 | "Name of the symbol, as used by the linker (i.e., may be mangled).", |
532 | NULL }, | |
f3e9a817 PM |
533 | { "print_name", sympy_get_print_name, NULL, |
534 | "Name of the symbol in a form suitable for output.\n\ | |
535 | This is either name or linkage_name, depending on whether the user asked GDB\n\ | |
536 | to display demangled or mangled names.", NULL }, | |
537 | { "addr_class", sympy_get_addr_class, NULL, "Address class of the symbol." }, | |
538 | { "is_argument", sympy_is_argument, NULL, | |
539 | "True if the symbol is an argument of a function." }, | |
540 | { "is_constant", sympy_is_constant, NULL, | |
541 | "True if the symbol is a constant." }, | |
542 | { "is_function", sympy_is_function, NULL, | |
543 | "True if the symbol is a function or method." }, | |
544 | { "is_variable", sympy_is_variable, NULL, | |
545 | "True if the symbol is a variable." }, | |
f0823d2c TT |
546 | { "needs_frame", sympy_needs_frame, NULL, |
547 | "True if the symbol requires a frame for evaluation." }, | |
64e7d9dd TT |
548 | { "line", sympy_line, NULL, |
549 | "The source line number at which the symbol was defined." }, | |
f3e9a817 PM |
550 | { NULL } /* Sentinel */ |
551 | }; | |
552 | ||
29703da4 PM |
553 | static PyMethodDef symbol_object_methods[] = { |
554 | { "is_valid", sympy_is_valid, METH_NOARGS, | |
555 | "is_valid () -> Boolean.\n\ | |
556 | Return true if this symbol is valid, false if not." }, | |
f0823d2c TT |
557 | { "value", sympy_value, METH_VARARGS, |
558 | "value ([frame]) -> gdb.Value\n\ | |
559 | Return the value of the symbol." }, | |
29703da4 PM |
560 | {NULL} /* Sentinel */ |
561 | }; | |
562 | ||
f3e9a817 PM |
563 | PyTypeObject symbol_object_type = { |
564 | PyObject_HEAD_INIT (NULL) | |
565 | 0, /*ob_size*/ | |
566 | "gdb.Symbol", /*tp_name*/ | |
567 | sizeof (symbol_object), /*tp_basicsize*/ | |
568 | 0, /*tp_itemsize*/ | |
569 | sympy_dealloc, /*tp_dealloc*/ | |
570 | 0, /*tp_print*/ | |
571 | 0, /*tp_getattr*/ | |
572 | 0, /*tp_setattr*/ | |
573 | 0, /*tp_compare*/ | |
574 | 0, /*tp_repr*/ | |
575 | 0, /*tp_as_number*/ | |
576 | 0, /*tp_as_sequence*/ | |
577 | 0, /*tp_as_mapping*/ | |
578 | 0, /*tp_hash */ | |
579 | 0, /*tp_call*/ | |
580 | sympy_str, /*tp_str*/ | |
581 | 0, /*tp_getattro*/ | |
582 | 0, /*tp_setattro*/ | |
583 | 0, /*tp_as_buffer*/ | |
584 | Py_TPFLAGS_DEFAULT, /*tp_flags*/ | |
585 | "GDB symbol object", /*tp_doc */ | |
586 | 0, /*tp_traverse */ | |
587 | 0, /*tp_clear */ | |
588 | 0, /*tp_richcompare */ | |
589 | 0, /*tp_weaklistoffset */ | |
590 | 0, /*tp_iter */ | |
591 | 0, /*tp_iternext */ | |
29703da4 | 592 | symbol_object_methods, /*tp_methods */ |
f3e9a817 PM |
593 | 0, /*tp_members */ |
594 | symbol_object_getset /*tp_getset */ | |
595 | }; |