_dbus_bindings/abstract.c

   1 /* Subclasses of built-in Python types supporting extra D-Bus functionality.
   2  *
   3  * Copyright (C) 2006, 2007 Collabora Ltd.
   4  *
   5  * Licensed under the Academic Free License version 2.1
   6  *
   7  * This library is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU Lesser General Public License as published by
   9  * the Free Software Foundation; either version 2.1 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This library 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 Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public License
  18  * along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  */
  22
  23 #include <Python.h>
  24 #include <structmember.h>
  25
  26 #include <stdint.h>
  27
  28 #include "dbus_bindings-internal.h"
  29 #include "types-internal.h"
  30
  31 /* Dict indexed by object IDs, whose values are nonzero variant levels
  32  * for immutable variable-sized D-Bus data types (_LongBase, _StrBase, Struct).
  33  *
  34  * This is a strange way to store them, but adding a __dict__ to the offending
  35  * objects seems even more error-prone, given that their sizes are variable!
  36  */
  37 PyObject *_dbus_py_variant_levels = NULL;
  38
  39 long
  40 dbus_py_variant_level_get(PyObject *obj)
  41 {
  42     PyObject *vl_obj;
  43     PyObject *key = PyLong_FromVoidPtr(obj);
  44
  45     if (!key) {
  46         return 0;
  47     }
  48
  49     vl_obj = PyDict_GetItem(_dbus_py_variant_levels, key);
  50     Py_DECREF(key);
  51
  52     if (!vl_obj)
  53         return 0;
  54     return PyInt_AsLong(vl_obj);
  55 }
  56
  57 dbus_bool_t
  58 dbus_py_variant_level_set(PyObject *obj, long variant_level)
  59 {
  60     /* key is the object's ID (= pointer) to avoid referencing it */
  61     PyObject *key = PyLong_FromVoidPtr(obj);
  62
  63     if (!key) {
  64         return FALSE;
  65     }
  66
  67     if (variant_level <= 0) {
  68         if (PyDict_GetItem (_dbus_py_variant_levels, key)) {
  69             if (PyDict_DelItem (_dbus_py_variant_levels, key) < 0) {
  70                 Py_DECREF(key);
  71                 return FALSE;
  72             }
  73         }
  74     }
  75     else {
  76         PyObject *vl_obj = PyInt_FromLong(variant_level);
  77         if (!vl_obj) {
  78             Py_DECREF(key);
  79             return FALSE;
  80         }
  81         if (PyDict_SetItem (_dbus_py_variant_levels, key, vl_obj) < 0) {
  82             Py_DECREF(key);
  83             return FALSE;
  84         }
  85     }
  86     Py_DECREF(key);
  87     return TRUE;
  88 }
  89
  90 PyObject *
  91 dbus_py_variant_level_getattro(PyObject *obj, PyObject *name)
  92 {
  93     PyObject *key, *value;
  94
  95     if (PyString_Check(name)) {
  96         Py_INCREF(name);
  97     }
  98     else if (PyUnicode_Check(name)) {
  99         name = PyUnicode_AsEncodedString(name, NULL, NULL);
 100         if (!name) {
 101             return NULL;
 102         }
 103     }
 104     else {
 105         PyErr_SetString(PyExc_TypeError, "attribute name must be string");
 106         return NULL;
 107     }
 108
 109     if (strcmp(PyString_AS_STRING(name), "variant_level")) {
 110         value = PyObject_GenericGetAttr(obj, name);
 111         Py_DECREF(name);
 112         return value;
 113     }
 114
 115     Py_DECREF(name);
 116
 117     key = PyLong_FromVoidPtr(obj);
 118
 119     if (!key) {
 120         return NULL;
 121     }
 122
 123     value = PyDict_GetItem(_dbus_py_variant_levels, key);
 124     Py_DECREF(key);
 125
 126     if (!value)
 127         return PyInt_FromLong(0);
 128     Py_INCREF(value);
 129     return value;
 130 }
 131
 132 /* To be invoked by destructors. Clear the variant level without touching the
 133  * exception state */
 134 void
 135 dbus_py_variant_level_clear(PyObject *self)
 136 {
 137     PyObject *et, *ev, *etb;
 138
 139     /* avoid clobbering any pending exception */
 140     PyErr_Fetch(&et, &ev, &etb);
 141     if (!dbus_py_variant_level_set(self, 0)) {
 142         /* should never happen */
 143         PyErr_WriteUnraisable(self);
 144     }
 145     PyErr_Restore(et, ev, etb);
 146 }
 147
 148 /* Support code for int subclasses. ================================== */
 149
 150 PyDoc_STRVAR(DBusPythonInt_tp_doc,\
 151 "Base class for int subclasses with a ``variant_level`` attribute.\n"
 152 "Do not rely on the existence of this class outside dbus-python.\n"
 153 );
 154
 155 static PyMemberDef DBusPythonInt_tp_members[] = {
 156     {"variant_level", T_LONG, offsetof(DBusPyIntBase, variant_level),
 157      READONLY,
 158      "The number of nested variants wrapping the real data. "
 159      "0 if not in a variant."},
 160     {NULL},
 161 };
 162
 163 static PyObject *
 164 DBusPythonInt_tp_new(PyTypeObject *cls, PyObject *args, PyObject *kwargs)
 165 {
 166     PyObject *self;
 167     long variantness = 0;
 168     static char *argnames[] = {"variant_level", NULL};
 169
 170     if (PyTuple_Size(args) > 1) {
 171         PyErr_SetString(PyExc_TypeError,
 172                         "__new__ takes at most one positional parameter");
 173         return NULL;
 174     }
 175     if (!PyArg_ParseTupleAndKeywords(dbus_py_empty_tuple, kwargs,
 176                                      "|l:__new__", argnames,
 177                                      &variantness)) return NULL;
 178     if (variantness < 0) {
 179         PyErr_SetString(PyExc_ValueError,
 180                         "variant_level must be non-negative");
 181         return NULL;
 182     }
 183
 184     self = (PyInt_Type.tp_new)(cls, args, NULL);
 185     if (self) {
 186         ((DBusPyIntBase *)self)->variant_level = variantness;
 187     }
 188     return self;
 189 }
 190
 191 static PyObject *
 192 DBusPythonInt_tp_repr(PyObject *self)
 193 {
 194     PyObject *parent_repr = (PyInt_Type.tp_repr)(self);
 195     long variant_level = ((DBusPyIntBase *)self)->variant_level;
 196     PyObject *my_repr;
 197
 198     if (!parent_repr) return NULL;
 199     if (variant_level > 0) {
 200         my_repr = PyString_FromFormat("%s(%s, variant_level=%ld)",
 201                                       self->ob_type->tp_name,
 202                                       PyString_AS_STRING(parent_repr),
 203                                       variant_level);
 204     }
 205     else {
 206         my_repr = PyString_FromFormat("%s(%s)", self->ob_type->tp_name,
 207                                       PyString_AS_STRING(parent_repr));
 208     }
 209     /* whether my_repr is NULL or not: */
 210     Py_DECREF(parent_repr);
 211     return my_repr;
 212 }
 213
 214 PyTypeObject DBusPyIntBase_Type = {
 215     PyObject_HEAD_INIT(DEFERRED_ADDRESS(&PyType_Type))
 216     0,
 217     "_dbus_bindings._IntBase",
 218     sizeof(DBusPyIntBase),
 219     0,
 220     0,                                      /* tp_dealloc */
 221     0,                                      /* tp_print */
 222     0,                                      /* tp_getattr */
 223     0,                                      /* tp_setattr */
 224     0,                                      /* tp_compare */
 225     DBusPythonInt_tp_repr,                  /* tp_repr */
 226     0,                                      /* tp_as_number */
 227     0,                                      /* tp_as_sequence */
 228     0,                                      /* tp_as_mapping */
 229     0,                                      /* tp_hash */
 230     0,                                      /* tp_call */
 231     0,                                      /* tp_str */
 232     0,                                      /* tp_getattro */
 233     0,                                      /* tp_setattro */
 234     0,                                      /* tp_as_buffer */
 235     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
 236     DBusPythonInt_tp_doc,                   /* tp_doc */
 237     0,                                      /* tp_traverse */
 238     0,                                      /* tp_clear */
 239     0,                                      /* tp_richcompare */
 240     0,                                      /* tp_weaklistoffset */
 241     0,                                      /* tp_iter */
 242     0,                                      /* tp_iternext */
 243     0,                                      /* tp_methods */
 244     DBusPythonInt_tp_members,               /* tp_members */
 245     0,                                      /* tp_getset */
 246     DEFERRED_ADDRESS(&PyInt_Type),          /* tp_base */
 247     0,                                      /* tp_dict */
 248     0,                                      /* tp_descr_get */
 249     0,                                      /* tp_descr_set */
 250     0,                                      /* tp_dictoffset */
 251     0,                                      /* tp_init */
 252     PyType_GenericAlloc,                    /* tp_alloc */
 253     DBusPythonInt_tp_new,                   /* tp_new */
 254     PyObject_Del,                           /* tp_free */
 255 };
 256
 257 /* Support code for float subclasses. ================================ */
 258
 259 /* There's only one subclass at the moment (Double) but these are factored
 260 out to make room for Float later. (Float is implemented and #if'd out) */
 261
 262 PyDoc_STRVAR(DBusPythonFloat_tp_doc,\
 263 "Base class for float subclasses with a ``variant_level`` attribute.\n"
 264 "Do not rely on the existence of this class outside dbus-python.\n"
 265 );
 266
 267 static PyMemberDef DBusPythonFloat_tp_members[] = {
 268     {"variant_level", T_LONG, offsetof(DBusPyFloatBase, variant_level),
 269      READONLY,
 270      "The number of nested variants wrapping the real data. "
 271      "0 if not in a variant."},
 272     {NULL},
 273 };
 274
 275 static PyObject *
 276 DBusPythonFloat_tp_new(PyTypeObject *cls, PyObject *args, PyObject *kwargs)
 277 {
 278     PyObject *self;
 279     long variantness = 0;
 280     static char *argnames[] = {"variant_level", NULL};
 281
 282     if (PyTuple_Size(args) > 1) {
 283         PyErr_SetString(PyExc_TypeError,
 284                         "__new__ takes at most one positional parameter");
 285         return NULL;
 286     }
 287     if (!PyArg_ParseTupleAndKeywords(dbus_py_empty_tuple, kwargs,
 288                                      "|l:__new__", argnames,
 289                                      &variantness)) return NULL;
 290     if (variantness < 0) {
 291         PyErr_SetString(PyExc_ValueError,
 292                         "variant_level must be non-negative");
 293         return NULL;
 294     }
 295
 296     self = (PyFloat_Type.tp_new)(cls, args, NULL);
 297     if (self) {
 298         ((DBusPyFloatBase *)self)->variant_level = variantness;
 299     }
 300     return self;
 301 }
 302
 303 static PyObject *
 304 DBusPythonFloat_tp_repr(PyObject *self)
 305 {
 306     PyObject *parent_repr = (PyFloat_Type.tp_repr)(self);
 307     long variant_level = ((DBusPyFloatBase *)self)->variant_level;
 308     PyObject *my_repr;
 309
 310     if (!parent_repr) return NULL;
 311     if (variant_level > 0) {
 312         my_repr = PyString_FromFormat("%s(%s, variant_level=%ld)",
 313                                       self->ob_type->tp_name,
 314                                       PyString_AS_STRING(parent_repr),
 315                                       variant_level);
 316     }
 317     else {
 318         my_repr = PyString_FromFormat("%s(%s)", self->ob_type->tp_name,
 319                                       PyString_AS_STRING(parent_repr));
 320     }
 321     /* whether my_repr is NULL or not: */
 322     Py_DECREF(parent_repr);
 323     return my_repr;
 324 }
 325
 326 PyTypeObject DBusPyFloatBase_Type = {
 327     PyObject_HEAD_INIT(DEFERRED_ADDRESS(&PyType_Type))
 328     0,
 329     "_dbus_bindings._FloatBase",
 330     sizeof(DBusPyFloatBase),
 331     0,
 332     0,                                      /* tp_dealloc */
 333     0,                                      /* tp_print */
 334     0,                                      /* tp_getattr */
 335     0,                                      /* tp_setattr */
 336     0,                                      /* tp_compare */
 337     DBusPythonFloat_tp_repr,                /* tp_repr */
 338     0,                                      /* tp_as_number */
 339     0,                                      /* tp_as_sequence */
 340     0,                                      /* tp_as_mapping */
 341     0,                                      /* tp_hash */
 342     0,                                      /* tp_call */
 343     0,                                      /* tp_str */
 344     0,                                      /* tp_getattro */
 345     0,                                      /* tp_setattro */
 346     0,                                      /* tp_as_buffer */
 347     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
 348     DBusPythonFloat_tp_doc,                 /* tp_doc */
 349     0,                                      /* tp_traverse */
 350     0,                                      /* tp_clear */
 351     0,                                      /* tp_richcompare */
 352     0,                                      /* tp_weaklistoffset */
 353     0,                                      /* tp_iter */
 354     0,                                      /* tp_iternext */
 355     0,                                      /* tp_methods */
 356     DBusPythonFloat_tp_members,             /* tp_members */
 357     0,                                      /* tp_getset */
 358     DEFERRED_ADDRESS(&PyFloat_Type),        /* tp_base */
 359     0,                                      /* tp_dict */
 360     0,                                      /* tp_descr_get */
 361     0,                                      /* tp_descr_set */
 362     0,                                      /* tp_dictoffset */
 363     0,                                      /* tp_init */
 364     0,                                      /* tp_alloc */
 365     DBusPythonFloat_tp_new,                 /* tp_new */
 366 };
 367
 368 /* Support code for str subclasses ================================== */
 369
 370 PyDoc_STRVAR(DBusPythonString_tp_doc,\
 371 "Base class for str subclasses with a ``variant_level`` attribute.\n"
 372 "Do not rely on the existence of this class outside dbus-python.\n"
 373 );
 374
 375 static PyObject *
 376 DBusPythonString_tp_new(PyTypeObject *cls, PyObject *args, PyObject *kwargs)
 377 {
 378     PyObject *self;
 379     long variantness = 0;
 380     static char *argnames[] = {"variant_level", NULL};
 381
 382     if (PyTuple_Size(args) > 1) {
 383         PyErr_SetString(PyExc_TypeError,
 384                         "__new__ takes at most one positional parameter");
 385         return NULL;
 386     }
 387     if (!PyArg_ParseTupleAndKeywords(dbus_py_empty_tuple, kwargs,
 388                                      "|l:__new__", argnames,
 389                                      &variantness)) return NULL;
 390     if (variantness < 0) {
 391         PyErr_SetString(PyExc_ValueError,
 392                         "variant_level must be non-negative");
 393         return NULL;
 394     }
 395
 396     self = (PyString_Type.tp_new)(cls, args, NULL);
 397     if (self) {
 398         if (!dbus_py_variant_level_set(self, variantness)) {
 399             Py_DECREF(self);
 400             return NULL;
 401         }
 402     }
 403     return self;
 404 }
 405
 406 static PyObject *
 407 DBusPythonString_tp_repr(PyObject *self)
 408 {
 409     PyObject *parent_repr = (PyString_Type.tp_repr)(self);
 410     PyObject *vl_obj;
 411     PyObject *my_repr;
 412     long variant_level;
 413
 414     if (!parent_repr) return NULL;
 415     vl_obj = PyObject_GetAttr(self, dbus_py_variant_level_const);
 416     if (!vl_obj) {
 417         Py_DECREF(parent_repr);
 418         return NULL;
 419     }
 420     variant_level = PyInt_AsLong(vl_obj);
 421     Py_DECREF(vl_obj);
 422     if (variant_level > 0) {
 423         my_repr = PyString_FromFormat("%s(%s, variant_level=%ld)",
 424                                       self->ob_type->tp_name,
 425                                       PyString_AS_STRING(parent_repr),
 426                                       variant_level);
 427     }
 428     else {
 429         my_repr = PyString_FromFormat("%s(%s)", self->ob_type->tp_name,
 430                                       PyString_AS_STRING(parent_repr));
 431     }
 432     /* whether my_repr is NULL or not: */
 433     Py_DECREF(parent_repr);
 434     return my_repr;
 435 }
 436
 437 static void
 438 DBusPyStrBase_tp_dealloc(PyObject *self)
 439 {
 440     dbus_py_variant_level_clear(self);
 441     (PyString_Type.tp_dealloc)(self);
 442 }
 443
 444 PyTypeObject DBusPyStrBase_Type = {
 445     PyObject_HEAD_INIT(DEFERRED_ADDRESS(&PyType_Type))
 446     0,
 447     "_dbus_bindings._StrBase",
 448     0,
 449     0,
 450     DBusPyStrBase_tp_dealloc,               /* tp_dealloc */
 451     0,                                      /* tp_print */
 452     0,                                      /* tp_getattr */
 453     0,                                      /* tp_setattr */
 454     0,                                      /* tp_compare */
 455     DBusPythonString_tp_repr,               /* tp_repr */
 456     0,                                      /* tp_as_number */
 457     0,                                      /* tp_as_sequence */
 458     0,                                      /* tp_as_mapping */
 459     0,                                      /* tp_hash */
 460     0,                                      /* tp_call */
 461     0,                                      /* tp_str */
 462     dbus_py_variant_level_getattro,         /* tp_getattro */
 463     dbus_py_immutable_setattro,             /* tp_setattro */
 464     0,                                      /* tp_as_buffer */
 465     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
 466     DBusPythonString_tp_doc,                /* tp_doc */
 467     0,                                      /* tp_traverse */
 468     0,                                      /* tp_clear */
 469     0,                                      /* tp_richcompare */
 470     0,                                      /* tp_weaklistoffset */
 471     0,                                      /* tp_iter */
 472     0,                                      /* tp_iternext */
 473     0,                                      /* tp_methods */
 474     0,                                      /* tp_members */
 475     0,                                      /* tp_getset */
 476     DEFERRED_ADDRESS(&PyString_Type),       /* tp_base */
 477     0,                                      /* tp_dict */
 478     0,                                      /* tp_descr_get */
 479     0,                                      /* tp_descr_set */
 480     0,                                      /* tp_dictoffset */
 481     0,                                      /* tp_init */
 482     0,                                      /* tp_alloc */
 483     DBusPythonString_tp_new,                /* tp_new */
 484 };
 485
 486 /* Support code for long subclasses ================================= */
 487
 488 PyDoc_STRVAR(DBusPythonLong_tp_doc,\
 489 "Base class for ``long`` subclasses with a ``variant_level`` attribute.\n"
 490 "Do not rely on the existence of this class outside dbus-python.\n"
 491 );
 492
 493 static PyObject *
 494 DBusPythonLong_tp_new(PyTypeObject *cls, PyObject *args, PyObject *kwargs)
 495 {
 496     PyObject *self;
 497     long variantness = 0;
 498     static char *argnames[] = {"variant_level", NULL};
 499
 500     if (PyTuple_Size(args) > 1) {
 501         PyErr_SetString(PyExc_TypeError,
 502                         "__new__ takes at most one positional parameter");
 503         return NULL;
 504     }
 505     if (!PyArg_ParseTupleAndKeywords(dbus_py_empty_tuple, kwargs,
 506                                      "|l:__new__", argnames,
 507                                      &variantness)) return NULL;
 508     if (variantness < 0) {
 509         PyErr_SetString(PyExc_ValueError,
 510                         "variant_level must be non-negative");
 511         return NULL;
 512     }
 513
 514     self = (PyLong_Type.tp_new)(cls, args, NULL);
 515     if (self) {
 516         if (!dbus_py_variant_level_set(self, variantness)) {
 517             Py_DECREF(self);
 518             return NULL;
 519         }
 520     }
 521     return self;
 522 }
 523
 524 static PyObject *
 525 DBusPythonLong_tp_repr(PyObject *self)
 526 {
 527     PyObject *parent_repr = (PyLong_Type.tp_repr)(self);
 528     PyObject *vl_obj;
 529     PyObject *my_repr;
 530     long variant_level;
 531
 532     if (!parent_repr) return NULL;
 533     vl_obj = PyObject_GetAttr(self, dbus_py_variant_level_const);
 534     if (!vl_obj) {
 535         Py_DECREF(parent_repr);
 536         return NULL;
 537     }
 538     variant_level = PyInt_AsLong(vl_obj);
 539     Py_DECREF(vl_obj);
 540     if (variant_level) {
 541         my_repr = PyString_FromFormat("%s(%s, variant_level=%ld)",
 542                                       self->ob_type->tp_name,
 543                                       PyString_AS_STRING(parent_repr),
 544                                       variant_level);
 545     }
 546     else {
 547         my_repr = PyString_FromFormat("%s(%s)", self->ob_type->tp_name,
 548                                       PyString_AS_STRING(parent_repr));
 549     }
 550     /* whether my_repr is NULL or not: */
 551     Py_DECREF(parent_repr);
 552     return my_repr;
 553 }
 554
 555 static void
 556 DBusPyLongBase_tp_dealloc(PyObject *self)
 557 {
 558     dbus_py_variant_level_clear(self);
 559     (PyLong_Type.tp_dealloc)(self);
 560 }
 561
 562 PyTypeObject DBusPyLongBase_Type = {
 563     PyObject_HEAD_INIT(DEFERRED_ADDRESS(&PyType_Type))
 564     0,
 565     "_dbus_bindings._LongBase",
 566     0,
 567     0,
 568     DBusPyLongBase_tp_dealloc,              /* tp_dealloc */
 569     0,                                      /* tp_print */
 570     0,                                      /* tp_getattr */
 571     0,                                      /* tp_setattr */
 572     0,                                      /* tp_compare */
 573     DBusPythonLong_tp_repr,                 /* tp_repr */
 574     0,                                      /* tp_as_number */
 575     0,                                      /* tp_as_sequence */
 576     0,                                      /* tp_as_mapping */
 577     0,                                      /* tp_hash */
 578     0,                                      /* tp_call */
 579     0,                                      /* tp_str */
 580     dbus_py_variant_level_getattro,         /* tp_getattro */
 581     dbus_py_immutable_setattro,             /* tp_setattro */
 582     0,                                      /* tp_as_buffer */
 583     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
 584     DBusPythonLong_tp_doc,                  /* tp_doc */
 585     0,                                      /* tp_traverse */
 586     0,                                      /* tp_clear */
 587     0,                                      /* tp_richcompare */
 588     0,                                      /* tp_weaklistoffset */
 589     0,                                      /* tp_iter */
 590     0,                                      /* tp_iternext */
 591     0,                                      /* tp_methods */
 592     0,                                      /* tp_members */
 593     0,                                      /* tp_getset */
 594     DEFERRED_ADDRESS(&PyLong_Type),         /* tp_base */
 595     0,                                      /* tp_dict */
 596     0,                                      /* tp_descr_get */
 597     0,                                      /* tp_descr_set */
 598     0,                                      /* tp_dictoffset */
 599     0,                                      /* tp_init */
 600     0,                                      /* tp_alloc */
 601     DBusPythonLong_tp_new,                  /* tp_new */
 602 };
 603
 604 PyObject *dbus_py_variant_level_const = NULL;
 605 PyObject *dbus_py_signature_const = NULL;
 606 PyObject *dbus_py__dbus_object_path__const = NULL;
 607
 608 dbus_bool_t
 609 dbus_py_init_abstract(void)
 610 {
 611     _dbus_py_variant_levels = PyDict_New();
 612     if (!_dbus_py_variant_levels) return 0;
 613
 614     dbus_py__dbus_object_path__const = PyString_InternFromString("__dbus_object_path__");
 615     if (!dbus_py__dbus_object_path__const) return 0;
 616
 617     dbus_py_variant_level_const = PyString_InternFromString("variant_level");
 618     if (!dbus_py_variant_level_const) return 0;
 619
 620     dbus_py_signature_const = PyString_InternFromString("signature");
 621     if (!dbus_py_signature_const) return 0;
 622
 623     DBusPyIntBase_Type.tp_base = &PyInt_Type;
 624     if (PyType_Ready(&DBusPyIntBase_Type) < 0) return 0;
 625     /* disable the tp_print copied from PyInt_Type, so tp_repr gets called as
 626     desired */
 627     DBusPyIntBase_Type.tp_print = NULL;
 628
 629     DBusPyFloatBase_Type.tp_base = &PyFloat_Type;
 630     if (PyType_Ready(&DBusPyFloatBase_Type) < 0) return 0;
 631     DBusPyFloatBase_Type.tp_print = NULL;
 632
 633     DBusPyLongBase_Type.tp_base = &PyLong_Type;
 634     if (PyType_Ready(&DBusPyLongBase_Type) < 0) return 0;
 635     DBusPyLongBase_Type.tp_print = NULL;
 636
 637     DBusPyStrBase_Type.tp_base = &PyString_Type;
 638     if (PyType_Ready(&DBusPyStrBase_Type) < 0) return 0;
 639     DBusPyStrBase_Type.tp_print = NULL;
 640
 641     return 1;
 642 }
 643
 644 dbus_bool_t
 645 dbus_py_insert_abstract_types(PyObject *this_module)
 646 {
 647     Py_INCREF(&DBusPyIntBase_Type);
 648     Py_INCREF(&DBusPyLongBase_Type);
 649     Py_INCREF(&DBusPyStrBase_Type);
 650     Py_INCREF(&DBusPyFloatBase_Type);
 651     if (PyModule_AddObject(this_module, "_IntBase",
 652                            (PyObject *)&DBusPyIntBase_Type) < 0) return 0;
 653     if (PyModule_AddObject(this_module, "_LongBase",
 654                            (PyObject *)&DBusPyLongBase_Type) < 0) return 0;
 655     if (PyModule_AddObject(this_module, "_StrBase",
 656                            (PyObject *)&DBusPyStrBase_Type) < 0) return 0;
 657     if (PyModule_AddObject(this_module, "_FloatBase",
 658                            (PyObject *)&DBusPyFloatBase_Type) < 0) return 0;
 659
 660     return 1;
 661 }