| 1 | /* Python interface to types. |
| 2 | |
| 3 | Copyright (C) 2008-2013 Free Software Foundation, Inc. |
| 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 "value.h" |
| 22 | #include "exceptions.h" |
| 23 | #include "python-internal.h" |
| 24 | #include "charset.h" |
| 25 | #include "gdbtypes.h" |
| 26 | #include "cp-support.h" |
| 27 | #include "demangle.h" |
| 28 | #include "objfiles.h" |
| 29 | #include "language.h" |
| 30 | #include "vec.h" |
| 31 | #include "typeprint.h" |
| 32 | |
| 33 | typedef struct pyty_type_object |
| 34 | { |
| 35 | PyObject_HEAD |
| 36 | struct type *type; |
| 37 | |
| 38 | /* If a Type object is associated with an objfile, it is kept on a |
| 39 | doubly-linked list, rooted in the objfile. This lets us copy the |
| 40 | underlying struct type when the objfile is deleted. */ |
| 41 | struct pyty_type_object *prev; |
| 42 | struct pyty_type_object *next; |
| 43 | } type_object; |
| 44 | |
| 45 | static PyTypeObject type_object_type |
| 46 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("type_object"); |
| 47 | |
| 48 | /* A Field object. */ |
| 49 | typedef struct pyty_field_object |
| 50 | { |
| 51 | PyObject_HEAD |
| 52 | |
| 53 | /* Dictionary holding our attributes. */ |
| 54 | PyObject *dict; |
| 55 | } field_object; |
| 56 | |
| 57 | static PyTypeObject field_object_type |
| 58 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("field_object"); |
| 59 | |
| 60 | /* A type iterator object. */ |
| 61 | typedef struct { |
| 62 | PyObject_HEAD |
| 63 | /* The current field index. */ |
| 64 | int field; |
| 65 | /* What to return. */ |
| 66 | enum gdbpy_iter_kind kind; |
| 67 | /* Pointer back to the original source type object. */ |
| 68 | struct pyty_type_object *source; |
| 69 | } typy_iterator_object; |
| 70 | |
| 71 | static PyTypeObject type_iterator_object_type |
| 72 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("typy_iterator_object"); |
| 73 | |
| 74 | /* This is used to initialize various gdb.TYPE_ constants. */ |
| 75 | struct pyty_code |
| 76 | { |
| 77 | /* The code. */ |
| 78 | enum type_code code; |
| 79 | /* The name. */ |
| 80 | const char *name; |
| 81 | }; |
| 82 | |
| 83 | /* Forward declarations. */ |
| 84 | static PyObject *typy_make_iter (PyObject *self, enum gdbpy_iter_kind kind); |
| 85 | |
| 86 | #define ENTRY(X) { X, #X } |
| 87 | |
| 88 | static struct pyty_code pyty_codes[] = |
| 89 | { |
| 90 | ENTRY (TYPE_CODE_BITSTRING), |
| 91 | ENTRY (TYPE_CODE_PTR), |
| 92 | ENTRY (TYPE_CODE_ARRAY), |
| 93 | ENTRY (TYPE_CODE_STRUCT), |
| 94 | ENTRY (TYPE_CODE_UNION), |
| 95 | ENTRY (TYPE_CODE_ENUM), |
| 96 | ENTRY (TYPE_CODE_FLAGS), |
| 97 | ENTRY (TYPE_CODE_FUNC), |
| 98 | ENTRY (TYPE_CODE_INT), |
| 99 | ENTRY (TYPE_CODE_FLT), |
| 100 | ENTRY (TYPE_CODE_VOID), |
| 101 | ENTRY (TYPE_CODE_SET), |
| 102 | ENTRY (TYPE_CODE_RANGE), |
| 103 | ENTRY (TYPE_CODE_STRING), |
| 104 | ENTRY (TYPE_CODE_ERROR), |
| 105 | ENTRY (TYPE_CODE_METHOD), |
| 106 | ENTRY (TYPE_CODE_METHODPTR), |
| 107 | ENTRY (TYPE_CODE_MEMBERPTR), |
| 108 | ENTRY (TYPE_CODE_REF), |
| 109 | ENTRY (TYPE_CODE_CHAR), |
| 110 | ENTRY (TYPE_CODE_BOOL), |
| 111 | ENTRY (TYPE_CODE_COMPLEX), |
| 112 | ENTRY (TYPE_CODE_TYPEDEF), |
| 113 | ENTRY (TYPE_CODE_NAMESPACE), |
| 114 | ENTRY (TYPE_CODE_DECFLOAT), |
| 115 | ENTRY (TYPE_CODE_INTERNAL_FUNCTION), |
| 116 | { TYPE_CODE_UNDEF, NULL } |
| 117 | }; |
| 118 | |
| 119 | \f |
| 120 | |
| 121 | static void |
| 122 | field_dealloc (PyObject *obj) |
| 123 | { |
| 124 | field_object *f = (field_object *) obj; |
| 125 | |
| 126 | Py_XDECREF (f->dict); |
| 127 | Py_TYPE (obj)->tp_free (obj); |
| 128 | } |
| 129 | |
| 130 | static PyObject * |
| 131 | field_new (void) |
| 132 | { |
| 133 | field_object *result = PyObject_New (field_object, &field_object_type); |
| 134 | |
| 135 | if (result) |
| 136 | { |
| 137 | result->dict = PyDict_New (); |
| 138 | if (!result->dict) |
| 139 | { |
| 140 | Py_DECREF (result); |
| 141 | result = NULL; |
| 142 | } |
| 143 | } |
| 144 | return (PyObject *) result; |
| 145 | } |
| 146 | |
| 147 | \f |
| 148 | |
| 149 | /* Return the code for this type. */ |
| 150 | static PyObject * |
| 151 | typy_get_code (PyObject *self, void *closure) |
| 152 | { |
| 153 | struct type *type = ((type_object *) self)->type; |
| 154 | |
| 155 | return PyInt_FromLong (TYPE_CODE (type)); |
| 156 | } |
| 157 | |
| 158 | /* Helper function for typy_fields which converts a single field to a |
| 159 | gdb.Field object. Returns NULL on error. */ |
| 160 | |
| 161 | static PyObject * |
| 162 | convert_field (struct type *type, int field) |
| 163 | { |
| 164 | PyObject *result = field_new (); |
| 165 | PyObject *arg; |
| 166 | |
| 167 | if (!result) |
| 168 | return NULL; |
| 169 | |
| 170 | if (!field_is_static (&TYPE_FIELD (type, field))) |
| 171 | { |
| 172 | const char *attrstring; |
| 173 | |
| 174 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) |
| 175 | { |
| 176 | arg = gdb_py_long_from_longest (TYPE_FIELD_ENUMVAL (type, field)); |
| 177 | attrstring = "enumval"; |
| 178 | } |
| 179 | else |
| 180 | { |
| 181 | arg = gdb_py_long_from_longest (TYPE_FIELD_BITPOS (type, field)); |
| 182 | attrstring = "bitpos"; |
| 183 | } |
| 184 | |
| 185 | if (!arg) |
| 186 | goto fail; |
| 187 | |
| 188 | /* At least python-2.4 had the second parameter non-const. */ |
| 189 | if (PyObject_SetAttrString (result, (char *) attrstring, arg) < 0) |
| 190 | goto failarg; |
| 191 | Py_DECREF (arg); |
| 192 | } |
| 193 | |
| 194 | if (TYPE_FIELD_NAME (type, field)) |
| 195 | arg = PyString_FromString (TYPE_FIELD_NAME (type, field)); |
| 196 | else |
| 197 | { |
| 198 | arg = Py_None; |
| 199 | Py_INCREF (arg); |
| 200 | } |
| 201 | if (!arg) |
| 202 | goto fail; |
| 203 | if (PyObject_SetAttrString (result, "name", arg) < 0) |
| 204 | goto failarg; |
| 205 | Py_DECREF (arg); |
| 206 | |
| 207 | arg = TYPE_FIELD_ARTIFICIAL (type, field) ? Py_True : Py_False; |
| 208 | Py_INCREF (arg); |
| 209 | if (PyObject_SetAttrString (result, "artificial", arg) < 0) |
| 210 | goto failarg; |
| 211 | Py_DECREF (arg); |
| 212 | |
| 213 | if (TYPE_CODE (type) == TYPE_CODE_CLASS) |
| 214 | arg = field < TYPE_N_BASECLASSES (type) ? Py_True : Py_False; |
| 215 | else |
| 216 | arg = Py_False; |
| 217 | Py_INCREF (arg); |
| 218 | if (PyObject_SetAttrString (result, "is_base_class", arg) < 0) |
| 219 | goto failarg; |
| 220 | Py_DECREF (arg); |
| 221 | |
| 222 | arg = PyLong_FromLong (TYPE_FIELD_BITSIZE (type, field)); |
| 223 | if (!arg) |
| 224 | goto fail; |
| 225 | if (PyObject_SetAttrString (result, "bitsize", arg) < 0) |
| 226 | goto failarg; |
| 227 | Py_DECREF (arg); |
| 228 | |
| 229 | /* A field can have a NULL type in some situations. */ |
| 230 | if (TYPE_FIELD_TYPE (type, field) == NULL) |
| 231 | { |
| 232 | arg = Py_None; |
| 233 | Py_INCREF (arg); |
| 234 | } |
| 235 | else |
| 236 | arg = type_to_type_object (TYPE_FIELD_TYPE (type, field)); |
| 237 | if (!arg) |
| 238 | goto fail; |
| 239 | if (PyObject_SetAttrString (result, "type", arg) < 0) |
| 240 | goto failarg; |
| 241 | Py_DECREF (arg); |
| 242 | |
| 243 | return result; |
| 244 | |
| 245 | failarg: |
| 246 | Py_DECREF (arg); |
| 247 | fail: |
| 248 | Py_DECREF (result); |
| 249 | return NULL; |
| 250 | } |
| 251 | |
| 252 | /* Helper function to return the name of a field, as a gdb.Field object. |
| 253 | If the field doesn't have a name, None is returned. */ |
| 254 | |
| 255 | static PyObject * |
| 256 | field_name (struct type *type, int field) |
| 257 | { |
| 258 | PyObject *result; |
| 259 | |
| 260 | if (TYPE_FIELD_NAME (type, field)) |
| 261 | result = PyString_FromString (TYPE_FIELD_NAME (type, field)); |
| 262 | else |
| 263 | { |
| 264 | result = Py_None; |
| 265 | Py_INCREF (result); |
| 266 | } |
| 267 | return result; |
| 268 | } |
| 269 | |
| 270 | /* Helper function for Type standard mapping methods. Returns a |
| 271 | Python object for field i of the type. "kind" specifies what to |
| 272 | return: the name of the field, a gdb.Field object corresponding to |
| 273 | the field, or a tuple consisting of field name and gdb.Field |
| 274 | object. */ |
| 275 | |
| 276 | static PyObject * |
| 277 | make_fielditem (struct type *type, int i, enum gdbpy_iter_kind kind) |
| 278 | { |
| 279 | PyObject *item = NULL, *key = NULL, *value = NULL; |
| 280 | |
| 281 | switch (kind) |
| 282 | { |
| 283 | case iter_items: |
| 284 | key = field_name (type, i); |
| 285 | if (key == NULL) |
| 286 | goto fail; |
| 287 | value = convert_field (type, i); |
| 288 | if (value == NULL) |
| 289 | goto fail; |
| 290 | item = PyTuple_New (2); |
| 291 | if (item == NULL) |
| 292 | goto fail; |
| 293 | PyTuple_SET_ITEM (item, 0, key); |
| 294 | PyTuple_SET_ITEM (item, 1, value); |
| 295 | break; |
| 296 | case iter_keys: |
| 297 | item = field_name (type, i); |
| 298 | break; |
| 299 | case iter_values: |
| 300 | item = convert_field (type, i); |
| 301 | break; |
| 302 | default: |
| 303 | gdb_assert_not_reached ("invalid gdbpy_iter_kind"); |
| 304 | } |
| 305 | return item; |
| 306 | |
| 307 | fail: |
| 308 | Py_XDECREF (key); |
| 309 | Py_XDECREF (value); |
| 310 | Py_XDECREF (item); |
| 311 | return NULL; |
| 312 | } |
| 313 | |
| 314 | /* Return a sequence of all field names, fields, or (name, field) pairs. |
| 315 | Each field is a gdb.Field object. */ |
| 316 | |
| 317 | static PyObject * |
| 318 | typy_fields_items (PyObject *self, enum gdbpy_iter_kind kind) |
| 319 | { |
| 320 | PyObject *py_type = self; |
| 321 | PyObject *result = NULL, *iter = NULL; |
| 322 | volatile struct gdb_exception except; |
| 323 | struct type *type = ((type_object *) py_type)->type; |
| 324 | struct type *checked_type = type; |
| 325 | |
| 326 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 327 | { |
| 328 | CHECK_TYPEDEF (checked_type); |
| 329 | } |
| 330 | GDB_PY_HANDLE_EXCEPTION (except); |
| 331 | |
| 332 | if (checked_type != type) |
| 333 | py_type = type_to_type_object (checked_type); |
| 334 | iter = typy_make_iter (py_type, kind); |
| 335 | if (checked_type != type) |
| 336 | { |
| 337 | /* Need to wrap this in braces because Py_DECREF isn't wrapped |
| 338 | in a do{}while(0). */ |
| 339 | Py_DECREF (py_type); |
| 340 | } |
| 341 | if (iter != NULL) |
| 342 | { |
| 343 | result = PySequence_List (iter); |
| 344 | Py_DECREF (iter); |
| 345 | } |
| 346 | |
| 347 | return result; |
| 348 | } |
| 349 | |
| 350 | /* Return a sequence of all fields. Each field is a gdb.Field object. */ |
| 351 | |
| 352 | static PyObject * |
| 353 | typy_values (PyObject *self, PyObject *args) |
| 354 | { |
| 355 | return typy_fields_items (self, iter_values); |
| 356 | } |
| 357 | |
| 358 | /* Return a sequence of all fields. Each field is a gdb.Field object. |
| 359 | This method is similar to typy_values, except where the supplied |
| 360 | gdb.Type is an array, in which case it returns a list of one entry |
| 361 | which is a gdb.Field object for a range (the array bounds). */ |
| 362 | |
| 363 | static PyObject * |
| 364 | typy_fields (PyObject *self, PyObject *args) |
| 365 | { |
| 366 | struct type *type = ((type_object *) self)->type; |
| 367 | PyObject *r, *rl; |
| 368 | |
| 369 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
| 370 | return typy_fields_items (self, iter_values); |
| 371 | |
| 372 | /* Array type. Handle this as a special case because the common |
| 373 | machinery wants struct or union or enum types. Build a list of |
| 374 | one entry which is the range for the array. */ |
| 375 | r = convert_field (type, 0); |
| 376 | if (r == NULL) |
| 377 | return NULL; |
| 378 | |
| 379 | rl = Py_BuildValue ("[O]", r); |
| 380 | Py_DECREF (r); |
| 381 | |
| 382 | return rl; |
| 383 | } |
| 384 | |
| 385 | /* Return a sequence of all field names. Each field is a gdb.Field object. */ |
| 386 | |
| 387 | static PyObject * |
| 388 | typy_field_names (PyObject *self, PyObject *args) |
| 389 | { |
| 390 | return typy_fields_items (self, iter_keys); |
| 391 | } |
| 392 | |
| 393 | /* Return a sequence of all (name, fields) pairs. Each field is a |
| 394 | gdb.Field object. */ |
| 395 | |
| 396 | static PyObject * |
| 397 | typy_items (PyObject *self, PyObject *args) |
| 398 | { |
| 399 | return typy_fields_items (self, iter_items); |
| 400 | } |
| 401 | |
| 402 | /* Return the type's tag, or None. */ |
| 403 | static PyObject * |
| 404 | typy_get_tag (PyObject *self, void *closure) |
| 405 | { |
| 406 | struct type *type = ((type_object *) self)->type; |
| 407 | |
| 408 | if (!TYPE_TAG_NAME (type)) |
| 409 | Py_RETURN_NONE; |
| 410 | return PyString_FromString (TYPE_TAG_NAME (type)); |
| 411 | } |
| 412 | |
| 413 | /* Return the type, stripped of typedefs. */ |
| 414 | static PyObject * |
| 415 | typy_strip_typedefs (PyObject *self, PyObject *args) |
| 416 | { |
| 417 | struct type *type = ((type_object *) self)->type; |
| 418 | volatile struct gdb_exception except; |
| 419 | |
| 420 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 421 | { |
| 422 | type = check_typedef (type); |
| 423 | } |
| 424 | GDB_PY_HANDLE_EXCEPTION (except); |
| 425 | |
| 426 | return type_to_type_object (type); |
| 427 | } |
| 428 | |
| 429 | /* Strip typedefs and pointers/reference from a type. Then check that |
| 430 | it is a struct, union, or enum type. If not, raise TypeError. */ |
| 431 | |
| 432 | static struct type * |
| 433 | typy_get_composite (struct type *type) |
| 434 | { |
| 435 | volatile struct gdb_exception except; |
| 436 | |
| 437 | for (;;) |
| 438 | { |
| 439 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 440 | { |
| 441 | CHECK_TYPEDEF (type); |
| 442 | } |
| 443 | GDB_PY_HANDLE_EXCEPTION (except); |
| 444 | |
| 445 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
| 446 | && TYPE_CODE (type) != TYPE_CODE_REF) |
| 447 | break; |
| 448 | type = TYPE_TARGET_TYPE (type); |
| 449 | } |
| 450 | |
| 451 | /* If this is not a struct, union, or enum type, raise TypeError |
| 452 | exception. */ |
| 453 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
| 454 | && TYPE_CODE (type) != TYPE_CODE_UNION |
| 455 | && TYPE_CODE (type) != TYPE_CODE_ENUM) |
| 456 | { |
| 457 | PyErr_SetString (PyExc_TypeError, |
| 458 | "Type is not a structure, union, or enum type."); |
| 459 | return NULL; |
| 460 | } |
| 461 | |
| 462 | return type; |
| 463 | } |
| 464 | |
| 465 | /* Helper for typy_array and typy_vector. */ |
| 466 | |
| 467 | static PyObject * |
| 468 | typy_array_1 (PyObject *self, PyObject *args, int is_vector) |
| 469 | { |
| 470 | long n1, n2; |
| 471 | PyObject *n2_obj = NULL; |
| 472 | struct type *array = NULL; |
| 473 | struct type *type = ((type_object *) self)->type; |
| 474 | volatile struct gdb_exception except; |
| 475 | |
| 476 | if (! PyArg_ParseTuple (args, "l|O", &n1, &n2_obj)) |
| 477 | return NULL; |
| 478 | |
| 479 | if (n2_obj) |
| 480 | { |
| 481 | if (!PyInt_Check (n2_obj)) |
| 482 | { |
| 483 | PyErr_SetString (PyExc_RuntimeError, |
| 484 | _("Array bound must be an integer")); |
| 485 | return NULL; |
| 486 | } |
| 487 | |
| 488 | if (! gdb_py_int_as_long (n2_obj, &n2)) |
| 489 | return NULL; |
| 490 | } |
| 491 | else |
| 492 | { |
| 493 | n2 = n1; |
| 494 | n1 = 0; |
| 495 | } |
| 496 | |
| 497 | if (n2 < n1) |
| 498 | { |
| 499 | PyErr_SetString (PyExc_ValueError, |
| 500 | _("Array length must not be negative")); |
| 501 | return NULL; |
| 502 | } |
| 503 | |
| 504 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 505 | { |
| 506 | array = lookup_array_range_type (type, n1, n2); |
| 507 | if (is_vector) |
| 508 | make_vector_type (array); |
| 509 | } |
| 510 | GDB_PY_HANDLE_EXCEPTION (except); |
| 511 | |
| 512 | return type_to_type_object (array); |
| 513 | } |
| 514 | |
| 515 | /* Return an array type. */ |
| 516 | |
| 517 | static PyObject * |
| 518 | typy_array (PyObject *self, PyObject *args) |
| 519 | { |
| 520 | return typy_array_1 (self, args, 0); |
| 521 | } |
| 522 | |
| 523 | /* Return a vector type. */ |
| 524 | |
| 525 | static PyObject * |
| 526 | typy_vector (PyObject *self, PyObject *args) |
| 527 | { |
| 528 | return typy_array_1 (self, args, 1); |
| 529 | } |
| 530 | |
| 531 | /* Return a Type object which represents a pointer to SELF. */ |
| 532 | static PyObject * |
| 533 | typy_pointer (PyObject *self, PyObject *args) |
| 534 | { |
| 535 | struct type *type = ((type_object *) self)->type; |
| 536 | volatile struct gdb_exception except; |
| 537 | |
| 538 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 539 | { |
| 540 | type = lookup_pointer_type (type); |
| 541 | } |
| 542 | GDB_PY_HANDLE_EXCEPTION (except); |
| 543 | |
| 544 | return type_to_type_object (type); |
| 545 | } |
| 546 | |
| 547 | /* Return the range of a type represented by SELF. The return type is |
| 548 | a tuple. The first element of the tuple contains the low bound, |
| 549 | while the second element of the tuple contains the high bound. */ |
| 550 | static PyObject * |
| 551 | typy_range (PyObject *self, PyObject *args) |
| 552 | { |
| 553 | struct type *type = ((type_object *) self)->type; |
| 554 | PyObject *result; |
| 555 | PyObject *low_bound = NULL, *high_bound = NULL; |
| 556 | /* Initialize these to appease GCC warnings. */ |
| 557 | LONGEST low = 0, high = 0; |
| 558 | |
| 559 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY |
| 560 | && TYPE_CODE (type) != TYPE_CODE_STRING |
| 561 | && TYPE_CODE (type) != TYPE_CODE_RANGE) |
| 562 | { |
| 563 | PyErr_SetString (PyExc_RuntimeError, |
| 564 | _("This type does not have a range.")); |
| 565 | return NULL; |
| 566 | } |
| 567 | |
| 568 | switch (TYPE_CODE (type)) |
| 569 | { |
| 570 | case TYPE_CODE_ARRAY: |
| 571 | case TYPE_CODE_STRING: |
| 572 | low = TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)); |
| 573 | high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (type)); |
| 574 | break; |
| 575 | case TYPE_CODE_RANGE: |
| 576 | low = TYPE_LOW_BOUND (type); |
| 577 | high = TYPE_HIGH_BOUND (type); |
| 578 | break; |
| 579 | } |
| 580 | |
| 581 | low_bound = PyLong_FromLong (low); |
| 582 | if (!low_bound) |
| 583 | goto failarg; |
| 584 | |
| 585 | high_bound = PyLong_FromLong (high); |
| 586 | if (!high_bound) |
| 587 | goto failarg; |
| 588 | |
| 589 | result = PyTuple_New (2); |
| 590 | if (!result) |
| 591 | goto failarg; |
| 592 | |
| 593 | if (PyTuple_SetItem (result, 0, low_bound) != 0) |
| 594 | { |
| 595 | Py_DECREF (result); |
| 596 | goto failarg; |
| 597 | } |
| 598 | if (PyTuple_SetItem (result, 1, high_bound) != 0) |
| 599 | { |
| 600 | Py_DECREF (high_bound); |
| 601 | Py_DECREF (result); |
| 602 | return NULL; |
| 603 | } |
| 604 | return result; |
| 605 | |
| 606 | failarg: |
| 607 | Py_XDECREF (high_bound); |
| 608 | Py_XDECREF (low_bound); |
| 609 | return NULL; |
| 610 | } |
| 611 | |
| 612 | /* Return a Type object which represents a reference to SELF. */ |
| 613 | static PyObject * |
| 614 | typy_reference (PyObject *self, PyObject *args) |
| 615 | { |
| 616 | struct type *type = ((type_object *) self)->type; |
| 617 | volatile struct gdb_exception except; |
| 618 | |
| 619 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 620 | { |
| 621 | type = lookup_reference_type (type); |
| 622 | } |
| 623 | GDB_PY_HANDLE_EXCEPTION (except); |
| 624 | |
| 625 | return type_to_type_object (type); |
| 626 | } |
| 627 | |
| 628 | /* Return a Type object which represents the target type of SELF. */ |
| 629 | static PyObject * |
| 630 | typy_target (PyObject *self, PyObject *args) |
| 631 | { |
| 632 | struct type *type = ((type_object *) self)->type; |
| 633 | |
| 634 | if (!TYPE_TARGET_TYPE (type)) |
| 635 | { |
| 636 | PyErr_SetString (PyExc_RuntimeError, |
| 637 | _("Type does not have a target.")); |
| 638 | return NULL; |
| 639 | } |
| 640 | |
| 641 | return type_to_type_object (TYPE_TARGET_TYPE (type)); |
| 642 | } |
| 643 | |
| 644 | /* Return a const-qualified type variant. */ |
| 645 | static PyObject * |
| 646 | typy_const (PyObject *self, PyObject *args) |
| 647 | { |
| 648 | struct type *type = ((type_object *) self)->type; |
| 649 | volatile struct gdb_exception except; |
| 650 | |
| 651 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 652 | { |
| 653 | type = make_cv_type (1, 0, type, NULL); |
| 654 | } |
| 655 | GDB_PY_HANDLE_EXCEPTION (except); |
| 656 | |
| 657 | return type_to_type_object (type); |
| 658 | } |
| 659 | |
| 660 | /* Return a volatile-qualified type variant. */ |
| 661 | static PyObject * |
| 662 | typy_volatile (PyObject *self, PyObject *args) |
| 663 | { |
| 664 | struct type *type = ((type_object *) self)->type; |
| 665 | volatile struct gdb_exception except; |
| 666 | |
| 667 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 668 | { |
| 669 | type = make_cv_type (0, 1, type, NULL); |
| 670 | } |
| 671 | GDB_PY_HANDLE_EXCEPTION (except); |
| 672 | |
| 673 | return type_to_type_object (type); |
| 674 | } |
| 675 | |
| 676 | /* Return an unqualified type variant. */ |
| 677 | static PyObject * |
| 678 | typy_unqualified (PyObject *self, PyObject *args) |
| 679 | { |
| 680 | struct type *type = ((type_object *) self)->type; |
| 681 | volatile struct gdb_exception except; |
| 682 | |
| 683 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 684 | { |
| 685 | type = make_cv_type (0, 0, type, NULL); |
| 686 | } |
| 687 | GDB_PY_HANDLE_EXCEPTION (except); |
| 688 | |
| 689 | return type_to_type_object (type); |
| 690 | } |
| 691 | |
| 692 | /* Return the size of the type represented by SELF, in bytes. */ |
| 693 | static PyObject * |
| 694 | typy_get_sizeof (PyObject *self, void *closure) |
| 695 | { |
| 696 | struct type *type = ((type_object *) self)->type; |
| 697 | volatile struct gdb_exception except; |
| 698 | |
| 699 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 700 | { |
| 701 | check_typedef (type); |
| 702 | } |
| 703 | /* Ignore exceptions. */ |
| 704 | |
| 705 | return gdb_py_long_from_longest (TYPE_LENGTH (type)); |
| 706 | } |
| 707 | |
| 708 | static struct type * |
| 709 | typy_lookup_typename (const char *type_name, const struct block *block) |
| 710 | { |
| 711 | struct type *type = NULL; |
| 712 | volatile struct gdb_exception except; |
| 713 | |
| 714 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 715 | { |
| 716 | if (!strncmp (type_name, "struct ", 7)) |
| 717 | type = lookup_struct (type_name + 7, NULL); |
| 718 | else if (!strncmp (type_name, "union ", 6)) |
| 719 | type = lookup_union (type_name + 6, NULL); |
| 720 | else if (!strncmp (type_name, "enum ", 5)) |
| 721 | type = lookup_enum (type_name + 5, NULL); |
| 722 | else |
| 723 | type = lookup_typename (python_language, python_gdbarch, |
| 724 | type_name, block, 0); |
| 725 | } |
| 726 | GDB_PY_HANDLE_EXCEPTION (except); |
| 727 | |
| 728 | return type; |
| 729 | } |
| 730 | |
| 731 | static struct type * |
| 732 | typy_lookup_type (struct demangle_component *demangled, |
| 733 | const struct block *block) |
| 734 | { |
| 735 | struct type *type, *rtype = NULL; |
| 736 | char *type_name = NULL; |
| 737 | enum demangle_component_type demangled_type; |
| 738 | volatile struct gdb_exception except; |
| 739 | |
| 740 | /* Save the type: typy_lookup_type() may (indirectly) overwrite |
| 741 | memory pointed by demangled. */ |
| 742 | demangled_type = demangled->type; |
| 743 | |
| 744 | if (demangled_type == DEMANGLE_COMPONENT_POINTER |
| 745 | || demangled_type == DEMANGLE_COMPONENT_REFERENCE |
| 746 | || demangled_type == DEMANGLE_COMPONENT_CONST |
| 747 | || demangled_type == DEMANGLE_COMPONENT_VOLATILE) |
| 748 | { |
| 749 | type = typy_lookup_type (demangled->u.s_binary.left, block); |
| 750 | if (! type) |
| 751 | return NULL; |
| 752 | |
| 753 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 754 | { |
| 755 | /* If the demangled_type matches with one of the types |
| 756 | below, run the corresponding function and save the type |
| 757 | to return later. We cannot just return here as we are in |
| 758 | an exception handler. */ |
| 759 | switch (demangled_type) |
| 760 | { |
| 761 | case DEMANGLE_COMPONENT_REFERENCE: |
| 762 | rtype = lookup_reference_type (type); |
| 763 | break; |
| 764 | case DEMANGLE_COMPONENT_POINTER: |
| 765 | rtype = lookup_pointer_type (type); |
| 766 | break; |
| 767 | case DEMANGLE_COMPONENT_CONST: |
| 768 | rtype = make_cv_type (1, 0, type, NULL); |
| 769 | break; |
| 770 | case DEMANGLE_COMPONENT_VOLATILE: |
| 771 | rtype = make_cv_type (0, 1, type, NULL); |
| 772 | break; |
| 773 | } |
| 774 | } |
| 775 | GDB_PY_HANDLE_EXCEPTION (except); |
| 776 | } |
| 777 | |
| 778 | /* If we have a type from the switch statement above, just return |
| 779 | that. */ |
| 780 | if (rtype) |
| 781 | return rtype; |
| 782 | |
| 783 | /* We don't have a type, so lookup the type. */ |
| 784 | type_name = cp_comp_to_string (demangled, 10); |
| 785 | type = typy_lookup_typename (type_name, block); |
| 786 | xfree (type_name); |
| 787 | |
| 788 | return type; |
| 789 | } |
| 790 | |
| 791 | /* This is a helper function for typy_template_argument that is used |
| 792 | when the type does not have template symbols attached. It works by |
| 793 | parsing the type name. This happens with compilers, like older |
| 794 | versions of GCC, that do not emit DW_TAG_template_*. */ |
| 795 | |
| 796 | static PyObject * |
| 797 | typy_legacy_template_argument (struct type *type, const struct block *block, |
| 798 | int argno) |
| 799 | { |
| 800 | int i; |
| 801 | struct demangle_component *demangled; |
| 802 | struct demangle_parse_info *info = NULL; |
| 803 | const char *err; |
| 804 | struct type *argtype; |
| 805 | struct cleanup *cleanup; |
| 806 | volatile struct gdb_exception except; |
| 807 | |
| 808 | if (TYPE_NAME (type) == NULL) |
| 809 | { |
| 810 | PyErr_SetString (PyExc_RuntimeError, _("Null type name.")); |
| 811 | return NULL; |
| 812 | } |
| 813 | |
| 814 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 815 | { |
| 816 | /* Note -- this is not thread-safe. */ |
| 817 | info = cp_demangled_name_to_comp (TYPE_NAME (type), &err); |
| 818 | } |
| 819 | GDB_PY_HANDLE_EXCEPTION (except); |
| 820 | |
| 821 | if (! info) |
| 822 | { |
| 823 | PyErr_SetString (PyExc_RuntimeError, err); |
| 824 | return NULL; |
| 825 | } |
| 826 | demangled = info->tree; |
| 827 | cleanup = make_cleanup_cp_demangled_name_parse_free (info); |
| 828 | |
| 829 | /* Strip off component names. */ |
| 830 | while (demangled->type == DEMANGLE_COMPONENT_QUAL_NAME |
| 831 | || demangled->type == DEMANGLE_COMPONENT_LOCAL_NAME) |
| 832 | demangled = demangled->u.s_binary.right; |
| 833 | |
| 834 | if (demangled->type != DEMANGLE_COMPONENT_TEMPLATE) |
| 835 | { |
| 836 | do_cleanups (cleanup); |
| 837 | PyErr_SetString (PyExc_RuntimeError, _("Type is not a template.")); |
| 838 | return NULL; |
| 839 | } |
| 840 | |
| 841 | /* Skip from the template to the arguments. */ |
| 842 | demangled = demangled->u.s_binary.right; |
| 843 | |
| 844 | for (i = 0; demangled && i < argno; ++i) |
| 845 | demangled = demangled->u.s_binary.right; |
| 846 | |
| 847 | if (! demangled) |
| 848 | { |
| 849 | do_cleanups (cleanup); |
| 850 | PyErr_Format (PyExc_RuntimeError, _("No argument %d in template."), |
| 851 | argno); |
| 852 | return NULL; |
| 853 | } |
| 854 | |
| 855 | argtype = typy_lookup_type (demangled->u.s_binary.left, block); |
| 856 | do_cleanups (cleanup); |
| 857 | if (! argtype) |
| 858 | return NULL; |
| 859 | |
| 860 | return type_to_type_object (argtype); |
| 861 | } |
| 862 | |
| 863 | static PyObject * |
| 864 | typy_template_argument (PyObject *self, PyObject *args) |
| 865 | { |
| 866 | int argno; |
| 867 | struct type *type = ((type_object *) self)->type; |
| 868 | const struct block *block = NULL; |
| 869 | PyObject *block_obj = NULL; |
| 870 | struct symbol *sym; |
| 871 | struct value *val = NULL; |
| 872 | volatile struct gdb_exception except; |
| 873 | |
| 874 | if (! PyArg_ParseTuple (args, "i|O", &argno, &block_obj)) |
| 875 | return NULL; |
| 876 | |
| 877 | if (block_obj) |
| 878 | { |
| 879 | block = block_object_to_block (block_obj); |
| 880 | if (! block) |
| 881 | { |
| 882 | PyErr_SetString (PyExc_RuntimeError, |
| 883 | _("Second argument must be block.")); |
| 884 | return NULL; |
| 885 | } |
| 886 | } |
| 887 | |
| 888 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 889 | { |
| 890 | type = check_typedef (type); |
| 891 | if (TYPE_CODE (type) == TYPE_CODE_REF) |
| 892 | type = check_typedef (TYPE_TARGET_TYPE (type)); |
| 893 | } |
| 894 | GDB_PY_HANDLE_EXCEPTION (except); |
| 895 | |
| 896 | /* We might not have DW_TAG_template_*, so try to parse the type's |
| 897 | name. This is inefficient if we do not have a template type -- |
| 898 | but that is going to wind up as an error anyhow. */ |
| 899 | if (! TYPE_N_TEMPLATE_ARGUMENTS (type)) |
| 900 | return typy_legacy_template_argument (type, block, argno); |
| 901 | |
| 902 | if (argno >= TYPE_N_TEMPLATE_ARGUMENTS (type)) |
| 903 | { |
| 904 | PyErr_Format (PyExc_RuntimeError, _("No argument %d in template."), |
| 905 | argno); |
| 906 | return NULL; |
| 907 | } |
| 908 | |
| 909 | sym = TYPE_TEMPLATE_ARGUMENT (type, argno); |
| 910 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
| 911 | return type_to_type_object (SYMBOL_TYPE (sym)); |
| 912 | else if (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT) |
| 913 | { |
| 914 | PyErr_Format (PyExc_RuntimeError, |
| 915 | _("Template argument is optimized out")); |
| 916 | return NULL; |
| 917 | } |
| 918 | |
| 919 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 920 | { |
| 921 | val = value_of_variable (sym, block); |
| 922 | } |
| 923 | GDB_PY_HANDLE_EXCEPTION (except); |
| 924 | |
| 925 | return value_to_value_object (val); |
| 926 | } |
| 927 | |
| 928 | static PyObject * |
| 929 | typy_str (PyObject *self) |
| 930 | { |
| 931 | volatile struct gdb_exception except; |
| 932 | char *thetype = NULL; |
| 933 | long length = 0; |
| 934 | PyObject *result; |
| 935 | |
| 936 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 937 | { |
| 938 | struct cleanup *old_chain; |
| 939 | struct ui_file *stb; |
| 940 | |
| 941 | stb = mem_fileopen (); |
| 942 | old_chain = make_cleanup_ui_file_delete (stb); |
| 943 | |
| 944 | LA_PRINT_TYPE (type_object_to_type (self), "", stb, -1, 0, |
| 945 | &type_print_raw_options); |
| 946 | |
| 947 | thetype = ui_file_xstrdup (stb, &length); |
| 948 | do_cleanups (old_chain); |
| 949 | } |
| 950 | if (except.reason < 0) |
| 951 | { |
| 952 | xfree (thetype); |
| 953 | GDB_PY_HANDLE_EXCEPTION (except); |
| 954 | } |
| 955 | |
| 956 | result = PyUnicode_Decode (thetype, length, host_charset (), NULL); |
| 957 | xfree (thetype); |
| 958 | |
| 959 | return result; |
| 960 | } |
| 961 | |
| 962 | /* Implement the richcompare method. */ |
| 963 | |
| 964 | static PyObject * |
| 965 | typy_richcompare (PyObject *self, PyObject *other, int op) |
| 966 | { |
| 967 | int result = Py_NE; |
| 968 | struct type *type1 = type_object_to_type (self); |
| 969 | struct type *type2 = type_object_to_type (other); |
| 970 | volatile struct gdb_exception except; |
| 971 | |
| 972 | /* We can only compare ourselves to another Type object, and only |
| 973 | for equality or inequality. */ |
| 974 | if (type2 == NULL || (op != Py_EQ && op != Py_NE)) |
| 975 | { |
| 976 | Py_INCREF (Py_NotImplemented); |
| 977 | return Py_NotImplemented; |
| 978 | } |
| 979 | |
| 980 | if (type1 == type2) |
| 981 | result = Py_EQ; |
| 982 | else |
| 983 | { |
| 984 | TRY_CATCH (except, RETURN_MASK_ALL) |
| 985 | { |
| 986 | result = types_deeply_equal (type1, type2); |
| 987 | } |
| 988 | /* If there is a GDB exception, a comparison is not capable |
| 989 | (or trusted), so exit. */ |
| 990 | GDB_PY_HANDLE_EXCEPTION (except); |
| 991 | } |
| 992 | |
| 993 | if (op == (result ? Py_EQ : Py_NE)) |
| 994 | Py_RETURN_TRUE; |
| 995 | Py_RETURN_FALSE; |
| 996 | } |
| 997 | |
| 998 | \f |
| 999 | |
| 1000 | static const struct objfile_data *typy_objfile_data_key; |
| 1001 | |
| 1002 | static void |
| 1003 | save_objfile_types (struct objfile *objfile, void *datum) |
| 1004 | { |
| 1005 | type_object *obj = datum; |
| 1006 | htab_t copied_types; |
| 1007 | struct cleanup *cleanup; |
| 1008 | |
| 1009 | if (!gdb_python_initialized) |
| 1010 | return; |
| 1011 | |
| 1012 | /* This prevents another thread from freeing the objects we're |
| 1013 | operating on. */ |
| 1014 | cleanup = ensure_python_env (get_objfile_arch (objfile), current_language); |
| 1015 | |
| 1016 | copied_types = create_copied_types_hash (objfile); |
| 1017 | |
| 1018 | while (obj) |
| 1019 | { |
| 1020 | type_object *next = obj->next; |
| 1021 | |
| 1022 | htab_empty (copied_types); |
| 1023 | |
| 1024 | obj->type = copy_type_recursive (objfile, obj->type, copied_types); |
| 1025 | |
| 1026 | obj->next = NULL; |
| 1027 | obj->prev = NULL; |
| 1028 | |
| 1029 | obj = next; |
| 1030 | } |
| 1031 | |
| 1032 | htab_delete (copied_types); |
| 1033 | |
| 1034 | do_cleanups (cleanup); |
| 1035 | } |
| 1036 | |
| 1037 | static void |
| 1038 | set_type (type_object *obj, struct type *type) |
| 1039 | { |
| 1040 | obj->type = type; |
| 1041 | obj->prev = NULL; |
| 1042 | if (type && TYPE_OBJFILE (type)) |
| 1043 | { |
| 1044 | struct objfile *objfile = TYPE_OBJFILE (type); |
| 1045 | |
| 1046 | obj->next = objfile_data (objfile, typy_objfile_data_key); |
| 1047 | if (obj->next) |
| 1048 | obj->next->prev = obj; |
| 1049 | set_objfile_data (objfile, typy_objfile_data_key, obj); |
| 1050 | } |
| 1051 | else |
| 1052 | obj->next = NULL; |
| 1053 | } |
| 1054 | |
| 1055 | static void |
| 1056 | typy_dealloc (PyObject *obj) |
| 1057 | { |
| 1058 | type_object *type = (type_object *) obj; |
| 1059 | |
| 1060 | if (type->prev) |
| 1061 | type->prev->next = type->next; |
| 1062 | else if (type->type && TYPE_OBJFILE (type->type)) |
| 1063 | { |
| 1064 | /* Must reset head of list. */ |
| 1065 | struct objfile *objfile = TYPE_OBJFILE (type->type); |
| 1066 | |
| 1067 | if (objfile) |
| 1068 | set_objfile_data (objfile, typy_objfile_data_key, type->next); |
| 1069 | } |
| 1070 | if (type->next) |
| 1071 | type->next->prev = type->prev; |
| 1072 | |
| 1073 | Py_TYPE (type)->tp_free (type); |
| 1074 | } |
| 1075 | |
| 1076 | /* Return number of fields ("length" of the field dictionary). */ |
| 1077 | |
| 1078 | static Py_ssize_t |
| 1079 | typy_length (PyObject *self) |
| 1080 | { |
| 1081 | struct type *type = ((type_object *) self)->type; |
| 1082 | |
| 1083 | type = typy_get_composite (type); |
| 1084 | if (type == NULL) |
| 1085 | return -1; |
| 1086 | |
| 1087 | return TYPE_NFIELDS (type); |
| 1088 | } |
| 1089 | |
| 1090 | /* Implements boolean evaluation of gdb.Type. Handle this like other |
| 1091 | Python objects that don't have a meaningful truth value -- all |
| 1092 | values are true. */ |
| 1093 | |
| 1094 | static int |
| 1095 | typy_nonzero (PyObject *self) |
| 1096 | { |
| 1097 | return 1; |
| 1098 | } |
| 1099 | |
| 1100 | /* Return a gdb.Field object for the field named by the argument. */ |
| 1101 | |
| 1102 | static PyObject * |
| 1103 | typy_getitem (PyObject *self, PyObject *key) |
| 1104 | { |
| 1105 | struct type *type = ((type_object *) self)->type; |
| 1106 | char *field; |
| 1107 | int i; |
| 1108 | |
| 1109 | field = python_string_to_host_string (key); |
| 1110 | if (field == NULL) |
| 1111 | return NULL; |
| 1112 | |
| 1113 | /* We want just fields of this type, not of base types, so instead of |
| 1114 | using lookup_struct_elt_type, portions of that function are |
| 1115 | copied here. */ |
| 1116 | |
| 1117 | type = typy_get_composite (type); |
| 1118 | if (type == NULL) |
| 1119 | return NULL; |
| 1120 | |
| 1121 | for (i = 0; i < TYPE_NFIELDS (type); i++) |
| 1122 | { |
| 1123 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
| 1124 | |
| 1125 | if (t_field_name && (strcmp_iw (t_field_name, field) == 0)) |
| 1126 | { |
| 1127 | return convert_field (type, i); |
| 1128 | } |
| 1129 | } |
| 1130 | PyErr_SetObject (PyExc_KeyError, key); |
| 1131 | return NULL; |
| 1132 | } |
| 1133 | |
| 1134 | /* Implement the "get" method on the type object. This is the |
| 1135 | same as getitem if the key is present, but returns the supplied |
| 1136 | default value or None if the key is not found. */ |
| 1137 | |
| 1138 | static PyObject * |
| 1139 | typy_get (PyObject *self, PyObject *args) |
| 1140 | { |
| 1141 | PyObject *key, *defval = Py_None, *result; |
| 1142 | |
| 1143 | if (!PyArg_UnpackTuple (args, "get", 1, 2, &key, &defval)) |
| 1144 | return NULL; |
| 1145 | |
| 1146 | result = typy_getitem (self, key); |
| 1147 | if (result != NULL) |
| 1148 | return result; |
| 1149 | |
| 1150 | /* typy_getitem returned error status. If the exception is |
| 1151 | KeyError, clear the exception status and return the defval |
| 1152 | instead. Otherwise return the exception unchanged. */ |
| 1153 | if (!PyErr_ExceptionMatches (PyExc_KeyError)) |
| 1154 | return NULL; |
| 1155 | |
| 1156 | PyErr_Clear (); |
| 1157 | Py_INCREF (defval); |
| 1158 | return defval; |
| 1159 | } |
| 1160 | |
| 1161 | /* Implement the "has_key" method on the type object. */ |
| 1162 | |
| 1163 | static PyObject * |
| 1164 | typy_has_key (PyObject *self, PyObject *args) |
| 1165 | { |
| 1166 | struct type *type = ((type_object *) self)->type; |
| 1167 | const char *field; |
| 1168 | int i; |
| 1169 | |
| 1170 | if (!PyArg_ParseTuple (args, "s", &field)) |
| 1171 | return NULL; |
| 1172 | |
| 1173 | /* We want just fields of this type, not of base types, so instead of |
| 1174 | using lookup_struct_elt_type, portions of that function are |
| 1175 | copied here. */ |
| 1176 | |
| 1177 | type = typy_get_composite (type); |
| 1178 | if (type == NULL) |
| 1179 | return NULL; |
| 1180 | |
| 1181 | for (i = 0; i < TYPE_NFIELDS (type); i++) |
| 1182 | { |
| 1183 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
| 1184 | |
| 1185 | if (t_field_name && (strcmp_iw (t_field_name, field) == 0)) |
| 1186 | Py_RETURN_TRUE; |
| 1187 | } |
| 1188 | Py_RETURN_FALSE; |
| 1189 | } |
| 1190 | |
| 1191 | /* Make an iterator object to iterate over keys, values, or items. */ |
| 1192 | |
| 1193 | static PyObject * |
| 1194 | typy_make_iter (PyObject *self, enum gdbpy_iter_kind kind) |
| 1195 | { |
| 1196 | typy_iterator_object *typy_iter_obj; |
| 1197 | |
| 1198 | /* Check that "self" is a structure or union type. */ |
| 1199 | if (typy_get_composite (((type_object *) self)->type) == NULL) |
| 1200 | return NULL; |
| 1201 | |
| 1202 | typy_iter_obj = PyObject_New (typy_iterator_object, |
| 1203 | &type_iterator_object_type); |
| 1204 | if (typy_iter_obj == NULL) |
| 1205 | return NULL; |
| 1206 | |
| 1207 | typy_iter_obj->field = 0; |
| 1208 | typy_iter_obj->kind = kind; |
| 1209 | Py_INCREF (self); |
| 1210 | typy_iter_obj->source = (type_object *) self; |
| 1211 | |
| 1212 | return (PyObject *) typy_iter_obj; |
| 1213 | } |
| 1214 | |
| 1215 | /* iteritems() method. */ |
| 1216 | |
| 1217 | static PyObject * |
| 1218 | typy_iteritems (PyObject *self, PyObject *args) |
| 1219 | { |
| 1220 | return typy_make_iter (self, iter_items); |
| 1221 | } |
| 1222 | |
| 1223 | /* iterkeys() method. */ |
| 1224 | |
| 1225 | static PyObject * |
| 1226 | typy_iterkeys (PyObject *self, PyObject *args) |
| 1227 | { |
| 1228 | return typy_make_iter (self, iter_keys); |
| 1229 | } |
| 1230 | |
| 1231 | /* Iterating over the class, same as iterkeys except for the function |
| 1232 | signature. */ |
| 1233 | |
| 1234 | static PyObject * |
| 1235 | typy_iter (PyObject *self) |
| 1236 | { |
| 1237 | return typy_make_iter (self, iter_keys); |
| 1238 | } |
| 1239 | |
| 1240 | /* itervalues() method. */ |
| 1241 | |
| 1242 | static PyObject * |
| 1243 | typy_itervalues (PyObject *self, PyObject *args) |
| 1244 | { |
| 1245 | return typy_make_iter (self, iter_values); |
| 1246 | } |
| 1247 | |
| 1248 | /* Return a reference to the type iterator. */ |
| 1249 | |
| 1250 | static PyObject * |
| 1251 | typy_iterator_iter (PyObject *self) |
| 1252 | { |
| 1253 | Py_INCREF (self); |
| 1254 | return self; |
| 1255 | } |
| 1256 | |
| 1257 | /* Return the next field in the iteration through the list of fields |
| 1258 | of the type. */ |
| 1259 | |
| 1260 | static PyObject * |
| 1261 | typy_iterator_iternext (PyObject *self) |
| 1262 | { |
| 1263 | typy_iterator_object *iter_obj = (typy_iterator_object *) self; |
| 1264 | struct type *type = iter_obj->source->type; |
| 1265 | PyObject *result; |
| 1266 | |
| 1267 | if (iter_obj->field < TYPE_NFIELDS (type)) |
| 1268 | { |
| 1269 | result = make_fielditem (type, iter_obj->field, iter_obj->kind); |
| 1270 | if (result != NULL) |
| 1271 | iter_obj->field++; |
| 1272 | return result; |
| 1273 | } |
| 1274 | |
| 1275 | return NULL; |
| 1276 | } |
| 1277 | |
| 1278 | static void |
| 1279 | typy_iterator_dealloc (PyObject *obj) |
| 1280 | { |
| 1281 | typy_iterator_object *iter_obj = (typy_iterator_object *) obj; |
| 1282 | |
| 1283 | Py_DECREF (iter_obj->source); |
| 1284 | } |
| 1285 | |
| 1286 | /* Create a new Type referring to TYPE. */ |
| 1287 | PyObject * |
| 1288 | type_to_type_object (struct type *type) |
| 1289 | { |
| 1290 | type_object *type_obj; |
| 1291 | |
| 1292 | type_obj = PyObject_New (type_object, &type_object_type); |
| 1293 | if (type_obj) |
| 1294 | set_type (type_obj, type); |
| 1295 | |
| 1296 | return (PyObject *) type_obj; |
| 1297 | } |
| 1298 | |
| 1299 | struct type * |
| 1300 | type_object_to_type (PyObject *obj) |
| 1301 | { |
| 1302 | if (! PyObject_TypeCheck (obj, &type_object_type)) |
| 1303 | return NULL; |
| 1304 | return ((type_object *) obj)->type; |
| 1305 | } |
| 1306 | |
| 1307 | \f |
| 1308 | |
| 1309 | /* Implementation of gdb.lookup_type. */ |
| 1310 | PyObject * |
| 1311 | gdbpy_lookup_type (PyObject *self, PyObject *args, PyObject *kw) |
| 1312 | { |
| 1313 | static char *keywords[] = { "name", "block", NULL }; |
| 1314 | const char *type_name = NULL; |
| 1315 | struct type *type = NULL; |
| 1316 | PyObject *block_obj = NULL; |
| 1317 | const struct block *block = NULL; |
| 1318 | |
| 1319 | if (! PyArg_ParseTupleAndKeywords (args, kw, "s|O", keywords, |
| 1320 | &type_name, &block_obj)) |
| 1321 | return NULL; |
| 1322 | |
| 1323 | if (block_obj) |
| 1324 | { |
| 1325 | block = block_object_to_block (block_obj); |
| 1326 | if (! block) |
| 1327 | { |
| 1328 | PyErr_SetString (PyExc_RuntimeError, |
| 1329 | _("'block' argument must be a Block.")); |
| 1330 | return NULL; |
| 1331 | } |
| 1332 | } |
| 1333 | |
| 1334 | type = typy_lookup_typename (type_name, block); |
| 1335 | if (! type) |
| 1336 | return NULL; |
| 1337 | |
| 1338 | return (PyObject *) type_to_type_object (type); |
| 1339 | } |
| 1340 | |
| 1341 | int |
| 1342 | gdbpy_initialize_types (void) |
| 1343 | { |
| 1344 | int i; |
| 1345 | |
| 1346 | typy_objfile_data_key |
| 1347 | = register_objfile_data_with_cleanup (save_objfile_types, NULL); |
| 1348 | |
| 1349 | if (PyType_Ready (&type_object_type) < 0) |
| 1350 | return -1; |
| 1351 | if (PyType_Ready (&field_object_type) < 0) |
| 1352 | return -1; |
| 1353 | if (PyType_Ready (&type_iterator_object_type) < 0) |
| 1354 | return -1; |
| 1355 | |
| 1356 | for (i = 0; pyty_codes[i].name; ++i) |
| 1357 | { |
| 1358 | if (PyModule_AddIntConstant (gdb_module, |
| 1359 | /* Cast needed for Python 2.4. */ |
| 1360 | (char *) pyty_codes[i].name, |
| 1361 | pyty_codes[i].code) < 0) |
| 1362 | return -1; |
| 1363 | } |
| 1364 | |
| 1365 | if (gdb_pymodule_addobject (gdb_module, "Type", |
| 1366 | (PyObject *) &type_object_type) < 0) |
| 1367 | return -1; |
| 1368 | |
| 1369 | if (gdb_pymodule_addobject (gdb_module, "TypeIterator", |
| 1370 | (PyObject *) &type_iterator_object_type) < 0) |
| 1371 | return -1; |
| 1372 | |
| 1373 | return gdb_pymodule_addobject (gdb_module, "Field", |
| 1374 | (PyObject *) &field_object_type); |
| 1375 | } |
| 1376 | |
| 1377 | \f |
| 1378 | |
| 1379 | static PyGetSetDef type_object_getset[] = |
| 1380 | { |
| 1381 | { "code", typy_get_code, NULL, |
| 1382 | "The code for this type.", NULL }, |
| 1383 | { "sizeof", typy_get_sizeof, NULL, |
| 1384 | "The size of this type, in bytes.", NULL }, |
| 1385 | { "tag", typy_get_tag, NULL, |
| 1386 | "The tag name for this type, or None.", NULL }, |
| 1387 | { NULL } |
| 1388 | }; |
| 1389 | |
| 1390 | static PyMethodDef type_object_methods[] = |
| 1391 | { |
| 1392 | { "array", typy_array, METH_VARARGS, |
| 1393 | "array ([LOW_BOUND,] HIGH_BOUND) -> Type\n\ |
| 1394 | Return a type which represents an array of objects of this type.\n\ |
| 1395 | The bounds of the array are [LOW_BOUND, HIGH_BOUND] inclusive.\n\ |
| 1396 | If LOW_BOUND is omitted, a value of zero is used." }, |
| 1397 | { "vector", typy_vector, METH_VARARGS, |
| 1398 | "vector ([LOW_BOUND,] HIGH_BOUND) -> Type\n\ |
| 1399 | Return a type which represents a vector of objects of this type.\n\ |
| 1400 | The bounds of the array are [LOW_BOUND, HIGH_BOUND] inclusive.\n\ |
| 1401 | If LOW_BOUND is omitted, a value of zero is used.\n\ |
| 1402 | Vectors differ from arrays in that if the current language has C-style\n\ |
| 1403 | arrays, vectors don't decay to a pointer to the first element.\n\ |
| 1404 | They are first class values." }, |
| 1405 | { "__contains__", typy_has_key, METH_VARARGS, |
| 1406 | "T.__contains__(k) -> True if T has a field named k, else False" }, |
| 1407 | { "const", typy_const, METH_NOARGS, |
| 1408 | "const () -> Type\n\ |
| 1409 | Return a const variant of this type." }, |
| 1410 | { "fields", typy_fields, METH_NOARGS, |
| 1411 | "fields () -> list\n\ |
| 1412 | Return a list holding all the fields of this type.\n\ |
| 1413 | Each field is a gdb.Field object." }, |
| 1414 | { "get", typy_get, METH_VARARGS, |
| 1415 | "T.get(k[,default]) -> returns field named k in T, if it exists;\n\ |
| 1416 | otherwise returns default, if supplied, or None if not." }, |
| 1417 | { "has_key", typy_has_key, METH_VARARGS, |
| 1418 | "T.has_key(k) -> True if T has a field named k, else False" }, |
| 1419 | { "items", typy_items, METH_NOARGS, |
| 1420 | "items () -> list\n\ |
| 1421 | Return a list of (name, field) pairs of this type.\n\ |
| 1422 | Each field is a gdb.Field object." }, |
| 1423 | { "iteritems", typy_iteritems, METH_NOARGS, |
| 1424 | "iteritems () -> an iterator over the (name, field)\n\ |
| 1425 | pairs of this type. Each field is a gdb.Field object." }, |
| 1426 | { "iterkeys", typy_iterkeys, METH_NOARGS, |
| 1427 | "iterkeys () -> an iterator over the field names of this type." }, |
| 1428 | { "itervalues", typy_itervalues, METH_NOARGS, |
| 1429 | "itervalues () -> an iterator over the fields of this type.\n\ |
| 1430 | Each field is a gdb.Field object." }, |
| 1431 | { "keys", typy_field_names, METH_NOARGS, |
| 1432 | "keys () -> list\n\ |
| 1433 | Return a list holding all the fields names of this type." }, |
| 1434 | { "pointer", typy_pointer, METH_NOARGS, |
| 1435 | "pointer () -> Type\n\ |
| 1436 | Return a type of pointer to this type." }, |
| 1437 | { "range", typy_range, METH_NOARGS, |
| 1438 | "range () -> tuple\n\ |
| 1439 | Return a tuple containing the lower and upper range for this type."}, |
| 1440 | { "reference", typy_reference, METH_NOARGS, |
| 1441 | "reference () -> Type\n\ |
| 1442 | Return a type of reference to this type." }, |
| 1443 | { "strip_typedefs", typy_strip_typedefs, METH_NOARGS, |
| 1444 | "strip_typedefs () -> Type\n\ |
| 1445 | Return a type formed by stripping this type of all typedefs."}, |
| 1446 | { "target", typy_target, METH_NOARGS, |
| 1447 | "target () -> Type\n\ |
| 1448 | Return the target type of this type." }, |
| 1449 | { "template_argument", typy_template_argument, METH_VARARGS, |
| 1450 | "template_argument (arg, [block]) -> Type\n\ |
| 1451 | Return the type of a template argument." }, |
| 1452 | { "unqualified", typy_unqualified, METH_NOARGS, |
| 1453 | "unqualified () -> Type\n\ |
| 1454 | Return a variant of this type without const or volatile attributes." }, |
| 1455 | { "values", typy_values, METH_NOARGS, |
| 1456 | "values () -> list\n\ |
| 1457 | Return a list holding all the fields of this type.\n\ |
| 1458 | Each field is a gdb.Field object." }, |
| 1459 | { "volatile", typy_volatile, METH_NOARGS, |
| 1460 | "volatile () -> Type\n\ |
| 1461 | Return a volatile variant of this type" }, |
| 1462 | { NULL } |
| 1463 | }; |
| 1464 | |
| 1465 | static PyNumberMethods type_object_as_number = { |
| 1466 | NULL, /* nb_add */ |
| 1467 | NULL, /* nb_subtract */ |
| 1468 | NULL, /* nb_multiply */ |
| 1469 | #ifndef IS_PY3K |
| 1470 | NULL, /* nb_divide */ |
| 1471 | #endif |
| 1472 | NULL, /* nb_remainder */ |
| 1473 | NULL, /* nb_divmod */ |
| 1474 | NULL, /* nb_power */ |
| 1475 | NULL, /* nb_negative */ |
| 1476 | NULL, /* nb_positive */ |
| 1477 | NULL, /* nb_absolute */ |
| 1478 | typy_nonzero, /* nb_nonzero */ |
| 1479 | NULL, /* nb_invert */ |
| 1480 | NULL, /* nb_lshift */ |
| 1481 | NULL, /* nb_rshift */ |
| 1482 | NULL, /* nb_and */ |
| 1483 | NULL, /* nb_xor */ |
| 1484 | NULL, /* nb_or */ |
| 1485 | #ifdef IS_PY3K |
| 1486 | NULL, /* nb_int */ |
| 1487 | NULL, /* reserved */ |
| 1488 | #else |
| 1489 | NULL, /* nb_coerce */ |
| 1490 | NULL, /* nb_int */ |
| 1491 | NULL, /* nb_long */ |
| 1492 | #endif |
| 1493 | NULL, /* nb_float */ |
| 1494 | #ifndef IS_PY3K |
| 1495 | NULL, /* nb_oct */ |
| 1496 | NULL /* nb_hex */ |
| 1497 | #endif |
| 1498 | }; |
| 1499 | |
| 1500 | static PyMappingMethods typy_mapping = { |
| 1501 | typy_length, |
| 1502 | typy_getitem, |
| 1503 | NULL /* no "set" method */ |
| 1504 | }; |
| 1505 | |
| 1506 | static PyTypeObject type_object_type = |
| 1507 | { |
| 1508 | PyVarObject_HEAD_INIT (NULL, 0) |
| 1509 | "gdb.Type", /*tp_name*/ |
| 1510 | sizeof (type_object), /*tp_basicsize*/ |
| 1511 | 0, /*tp_itemsize*/ |
| 1512 | typy_dealloc, /*tp_dealloc*/ |
| 1513 | 0, /*tp_print*/ |
| 1514 | 0, /*tp_getattr*/ |
| 1515 | 0, /*tp_setattr*/ |
| 1516 | 0, /*tp_compare*/ |
| 1517 | 0, /*tp_repr*/ |
| 1518 | &type_object_as_number, /*tp_as_number*/ |
| 1519 | 0, /*tp_as_sequence*/ |
| 1520 | &typy_mapping, /*tp_as_mapping*/ |
| 1521 | 0, /*tp_hash */ |
| 1522 | 0, /*tp_call*/ |
| 1523 | typy_str, /*tp_str*/ |
| 1524 | 0, /*tp_getattro*/ |
| 1525 | 0, /*tp_setattro*/ |
| 1526 | 0, /*tp_as_buffer*/ |
| 1527 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/ |
| 1528 | "GDB type object", /* tp_doc */ |
| 1529 | 0, /* tp_traverse */ |
| 1530 | 0, /* tp_clear */ |
| 1531 | typy_richcompare, /* tp_richcompare */ |
| 1532 | 0, /* tp_weaklistoffset */ |
| 1533 | typy_iter, /* tp_iter */ |
| 1534 | 0, /* tp_iternext */ |
| 1535 | type_object_methods, /* tp_methods */ |
| 1536 | 0, /* tp_members */ |
| 1537 | type_object_getset, /* tp_getset */ |
| 1538 | 0, /* tp_base */ |
| 1539 | 0, /* tp_dict */ |
| 1540 | 0, /* tp_descr_get */ |
| 1541 | 0, /* tp_descr_set */ |
| 1542 | 0, /* tp_dictoffset */ |
| 1543 | 0, /* tp_init */ |
| 1544 | 0, /* tp_alloc */ |
| 1545 | 0, /* tp_new */ |
| 1546 | }; |
| 1547 | |
| 1548 | static PyGetSetDef field_object_getset[] = |
| 1549 | { |
| 1550 | { "__dict__", gdb_py_generic_dict, NULL, |
| 1551 | "The __dict__ for this field.", &field_object_type }, |
| 1552 | { NULL } |
| 1553 | }; |
| 1554 | |
| 1555 | static PyTypeObject field_object_type = |
| 1556 | { |
| 1557 | PyVarObject_HEAD_INIT (NULL, 0) |
| 1558 | "gdb.Field", /*tp_name*/ |
| 1559 | sizeof (field_object), /*tp_basicsize*/ |
| 1560 | 0, /*tp_itemsize*/ |
| 1561 | field_dealloc, /*tp_dealloc*/ |
| 1562 | 0, /*tp_print*/ |
| 1563 | 0, /*tp_getattr*/ |
| 1564 | 0, /*tp_setattr*/ |
| 1565 | 0, /*tp_compare*/ |
| 1566 | 0, /*tp_repr*/ |
| 1567 | 0, /*tp_as_number*/ |
| 1568 | 0, /*tp_as_sequence*/ |
| 1569 | 0, /*tp_as_mapping*/ |
| 1570 | 0, /*tp_hash */ |
| 1571 | 0, /*tp_call*/ |
| 1572 | 0, /*tp_str*/ |
| 1573 | 0, /*tp_getattro*/ |
| 1574 | 0, /*tp_setattro*/ |
| 1575 | 0, /*tp_as_buffer*/ |
| 1576 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/ |
| 1577 | "GDB field object", /* tp_doc */ |
| 1578 | 0, /* tp_traverse */ |
| 1579 | 0, /* tp_clear */ |
| 1580 | 0, /* tp_richcompare */ |
| 1581 | 0, /* tp_weaklistoffset */ |
| 1582 | 0, /* tp_iter */ |
| 1583 | 0, /* tp_iternext */ |
| 1584 | 0, /* tp_methods */ |
| 1585 | 0, /* tp_members */ |
| 1586 | field_object_getset, /* tp_getset */ |
| 1587 | 0, /* tp_base */ |
| 1588 | 0, /* tp_dict */ |
| 1589 | 0, /* tp_descr_get */ |
| 1590 | 0, /* tp_descr_set */ |
| 1591 | offsetof (field_object, dict), /* tp_dictoffset */ |
| 1592 | 0, /* tp_init */ |
| 1593 | 0, /* tp_alloc */ |
| 1594 | 0, /* tp_new */ |
| 1595 | }; |
| 1596 | |
| 1597 | static PyTypeObject type_iterator_object_type = { |
| 1598 | PyVarObject_HEAD_INIT (NULL, 0) |
| 1599 | "gdb.TypeIterator", /*tp_name*/ |
| 1600 | sizeof (typy_iterator_object), /*tp_basicsize*/ |
| 1601 | 0, /*tp_itemsize*/ |
| 1602 | typy_iterator_dealloc, /*tp_dealloc*/ |
| 1603 | 0, /*tp_print*/ |
| 1604 | 0, /*tp_getattr*/ |
| 1605 | 0, /*tp_setattr*/ |
| 1606 | 0, /*tp_compare*/ |
| 1607 | 0, /*tp_repr*/ |
| 1608 | 0, /*tp_as_number*/ |
| 1609 | 0, /*tp_as_sequence*/ |
| 1610 | 0, /*tp_as_mapping*/ |
| 1611 | 0, /*tp_hash */ |
| 1612 | 0, /*tp_call*/ |
| 1613 | 0, /*tp_str*/ |
| 1614 | 0, /*tp_getattro*/ |
| 1615 | 0, /*tp_setattro*/ |
| 1616 | 0, /*tp_as_buffer*/ |
| 1617 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/ |
| 1618 | "GDB type iterator object", /*tp_doc */ |
| 1619 | 0, /*tp_traverse */ |
| 1620 | 0, /*tp_clear */ |
| 1621 | 0, /*tp_richcompare */ |
| 1622 | 0, /*tp_weaklistoffset */ |
| 1623 | typy_iterator_iter, /*tp_iter */ |
| 1624 | typy_iterator_iternext, /*tp_iternext */ |
| 1625 | 0 /*tp_methods */ |
| 1626 | }; |