Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | |
Benjamin Peterson | 722954a | 2011-06-11 16:33:35 -0500 | [diff] [blame] | 2 | /* Generic object operations; and implementation of None */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 3 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 4 | #include "Python.h" |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 5 | #include "frameobject.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 6 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 7 | #ifdef __cplusplus |
| 8 | extern "C" { |
| 9 | #endif |
| 10 | |
Victor Stinner | bd303c1 | 2013-11-07 23:07:29 +0100 | [diff] [blame] | 11 | _Py_IDENTIFIER(Py_Repr); |
| 12 | _Py_IDENTIFIER(__bytes__); |
| 13 | _Py_IDENTIFIER(__dir__); |
| 14 | _Py_IDENTIFIER(__isabstractmethod__); |
| 15 | _Py_IDENTIFIER(builtins); |
| 16 | |
Tim Peters | 3459251 | 2002-07-11 06:23:50 +0000 | [diff] [blame] | 17 | #ifdef Py_REF_DEBUG |
Neal Norwitz | 84632ee | 2006-03-04 20:00:59 +0000 | [diff] [blame] | 18 | Py_ssize_t _Py_RefTotal; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 19 | |
| 20 | Py_ssize_t |
| 21 | _Py_GetRefTotal(void) |
| 22 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 23 | PyObject *o; |
| 24 | Py_ssize_t total = _Py_RefTotal; |
| 25 | /* ignore the references to the dummy object of the dicts and sets |
| 26 | because they are not reliable and not useful (now that the |
| 27 | hash table code is well-tested) */ |
| 28 | o = _PyDict_Dummy(); |
| 29 | if (o != NULL) |
| 30 | total -= o->ob_refcnt; |
Antoine Pitrou | 9d95254 | 2013-08-24 21:07:07 +0200 | [diff] [blame] | 31 | o = _PySet_Dummy; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 32 | if (o != NULL) |
| 33 | total -= o->ob_refcnt; |
| 34 | return total; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 35 | } |
Nick Coghlan | d600951 | 2014-11-20 21:39:37 +1000 | [diff] [blame] | 36 | |
| 37 | void |
| 38 | _PyDebug_PrintTotalRefs(void) { |
| 39 | PyObject *xoptions, *value; |
| 40 | _Py_IDENTIFIER(showrefcount); |
| 41 | |
| 42 | xoptions = PySys_GetXOptions(); |
| 43 | if (xoptions == NULL) |
| 44 | return; |
| 45 | value = _PyDict_GetItemId(xoptions, &PyId_showrefcount); |
| 46 | if (value == Py_True) |
| 47 | fprintf(stderr, |
| 48 | "[%" PY_FORMAT_SIZE_T "d refs, " |
| 49 | "%" PY_FORMAT_SIZE_T "d blocks]\n", |
| 50 | _Py_GetRefTotal(), _Py_GetAllocatedBlocks()); |
| 51 | } |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 52 | #endif /* Py_REF_DEBUG */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 53 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 54 | /* Object allocation routines used by NEWOBJ and NEWVAROBJ macros. |
| 55 | These are used by the individual routines for object creation. |
| 56 | Do not call them otherwise, they do not initialize the object! */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 57 | |
Tim Peters | 78be799 | 2003-03-23 02:51:01 +0000 | [diff] [blame] | 58 | #ifdef Py_TRACE_REFS |
Tim Peters | 7571a0f | 2003-03-23 17:52:28 +0000 | [diff] [blame] | 59 | /* Head of circular doubly-linked list of all objects. These are linked |
| 60 | * together via the _ob_prev and _ob_next members of a PyObject, which |
| 61 | * exist only in a Py_TRACE_REFS build. |
| 62 | */ |
Tim Peters | 78be799 | 2003-03-23 02:51:01 +0000 | [diff] [blame] | 63 | static PyObject refchain = {&refchain, &refchain}; |
Tim Peters | 36eb4df | 2003-03-23 03:33:13 +0000 | [diff] [blame] | 64 | |
Tim Peters | 7571a0f | 2003-03-23 17:52:28 +0000 | [diff] [blame] | 65 | /* Insert op at the front of the list of all objects. If force is true, |
| 66 | * op is added even if _ob_prev and _ob_next are non-NULL already. If |
| 67 | * force is false amd _ob_prev or _ob_next are non-NULL, do nothing. |
| 68 | * force should be true if and only if op points to freshly allocated, |
| 69 | * uninitialized memory, or you've unlinked op from the list and are |
Tim Peters | 51f8d38 | 2003-03-23 18:06:08 +0000 | [diff] [blame] | 70 | * relinking it into the front. |
Tim Peters | 7571a0f | 2003-03-23 17:52:28 +0000 | [diff] [blame] | 71 | * Note that objects are normally added to the list via _Py_NewReference, |
| 72 | * which is called by PyObject_Init. Not all objects are initialized that |
| 73 | * way, though; exceptions include statically allocated type objects, and |
| 74 | * statically allocated singletons (like Py_True and Py_None). |
| 75 | */ |
Tim Peters | 36eb4df | 2003-03-23 03:33:13 +0000 | [diff] [blame] | 76 | void |
Tim Peters | 7571a0f | 2003-03-23 17:52:28 +0000 | [diff] [blame] | 77 | _Py_AddToAllObjects(PyObject *op, int force) |
Tim Peters | 36eb4df | 2003-03-23 03:33:13 +0000 | [diff] [blame] | 78 | { |
Tim Peters | 7571a0f | 2003-03-23 17:52:28 +0000 | [diff] [blame] | 79 | #ifdef Py_DEBUG |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 80 | if (!force) { |
| 81 | /* If it's initialized memory, op must be in or out of |
| 82 | * the list unambiguously. |
| 83 | */ |
| 84 | assert((op->_ob_prev == NULL) == (op->_ob_next == NULL)); |
| 85 | } |
Tim Peters | 78be799 | 2003-03-23 02:51:01 +0000 | [diff] [blame] | 86 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 87 | if (force || op->_ob_prev == NULL) { |
| 88 | op->_ob_next = refchain._ob_next; |
| 89 | op->_ob_prev = &refchain; |
| 90 | refchain._ob_next->_ob_prev = op; |
| 91 | refchain._ob_next = op; |
| 92 | } |
Tim Peters | 7571a0f | 2003-03-23 17:52:28 +0000 | [diff] [blame] | 93 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 94 | #endif /* Py_TRACE_REFS */ |
Tim Peters | 78be799 | 2003-03-23 02:51:01 +0000 | [diff] [blame] | 95 | |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 96 | #ifdef COUNT_ALLOCS |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 97 | static PyTypeObject *type_list; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 98 | /* All types are added to type_list, at least when |
| 99 | they get one object created. That makes them |
| 100 | immortal, which unfortunately contributes to |
| 101 | garbage itself. If unlist_types_without_objects |
| 102 | is set, they will be removed from the type_list |
| 103 | once the last object is deallocated. */ |
Benjamin Peterson | a4a37fe | 2009-01-11 17:13:55 +0000 | [diff] [blame] | 104 | static int unlist_types_without_objects; |
| 105 | extern Py_ssize_t tuple_zero_allocs, fast_tuple_allocs; |
| 106 | extern Py_ssize_t quick_int_allocs, quick_neg_int_allocs; |
| 107 | extern Py_ssize_t null_strings, one_strings; |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 108 | void |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 109 | dump_counts(FILE* f) |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 110 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 111 | PyTypeObject *tp; |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 112 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 113 | for (tp = type_list; tp; tp = tp->tp_next) |
| 114 | fprintf(f, "%s alloc'd: %" PY_FORMAT_SIZE_T "d, " |
| 115 | "freed: %" PY_FORMAT_SIZE_T "d, " |
| 116 | "max in use: %" PY_FORMAT_SIZE_T "d\n", |
| 117 | tp->tp_name, tp->tp_allocs, tp->tp_frees, |
| 118 | tp->tp_maxalloc); |
| 119 | fprintf(f, "fast tuple allocs: %" PY_FORMAT_SIZE_T "d, " |
| 120 | "empty: %" PY_FORMAT_SIZE_T "d\n", |
| 121 | fast_tuple_allocs, tuple_zero_allocs); |
| 122 | fprintf(f, "fast int allocs: pos: %" PY_FORMAT_SIZE_T "d, " |
| 123 | "neg: %" PY_FORMAT_SIZE_T "d\n", |
| 124 | quick_int_allocs, quick_neg_int_allocs); |
| 125 | fprintf(f, "null strings: %" PY_FORMAT_SIZE_T "d, " |
| 126 | "1-strings: %" PY_FORMAT_SIZE_T "d\n", |
| 127 | null_strings, one_strings); |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 128 | } |
| 129 | |
Sjoerd Mullender | 6ec3c65 | 1995-08-29 09:18:14 +0000 | [diff] [blame] | 130 | PyObject * |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 131 | get_counts(void) |
Sjoerd Mullender | 6ec3c65 | 1995-08-29 09:18:14 +0000 | [diff] [blame] | 132 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 133 | PyTypeObject *tp; |
| 134 | PyObject *result; |
| 135 | PyObject *v; |
Sjoerd Mullender | 6ec3c65 | 1995-08-29 09:18:14 +0000 | [diff] [blame] | 136 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 137 | result = PyList_New(0); |
| 138 | if (result == NULL) |
| 139 | return NULL; |
| 140 | for (tp = type_list; tp; tp = tp->tp_next) { |
| 141 | v = Py_BuildValue("(snnn)", tp->tp_name, tp->tp_allocs, |
| 142 | tp->tp_frees, tp->tp_maxalloc); |
| 143 | if (v == NULL) { |
| 144 | Py_DECREF(result); |
| 145 | return NULL; |
| 146 | } |
| 147 | if (PyList_Append(result, v) < 0) { |
| 148 | Py_DECREF(v); |
| 149 | Py_DECREF(result); |
| 150 | return NULL; |
| 151 | } |
| 152 | Py_DECREF(v); |
| 153 | } |
| 154 | return result; |
Sjoerd Mullender | 6ec3c65 | 1995-08-29 09:18:14 +0000 | [diff] [blame] | 155 | } |
| 156 | |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 157 | void |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 158 | inc_count(PyTypeObject *tp) |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 159 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 160 | if (tp->tp_next == NULL && tp->tp_prev == NULL) { |
| 161 | /* first time; insert in linked list */ |
| 162 | if (tp->tp_next != NULL) /* sanity check */ |
| 163 | Py_FatalError("XXX inc_count sanity check"); |
| 164 | if (type_list) |
| 165 | type_list->tp_prev = tp; |
| 166 | tp->tp_next = type_list; |
| 167 | /* Note that as of Python 2.2, heap-allocated type objects |
| 168 | * can go away, but this code requires that they stay alive |
| 169 | * until program exit. That's why we're careful with |
| 170 | * refcounts here. type_list gets a new reference to tp, |
| 171 | * while ownership of the reference type_list used to hold |
| 172 | * (if any) was transferred to tp->tp_next in the line above. |
| 173 | * tp is thus effectively immortal after this. |
| 174 | */ |
| 175 | Py_INCREF(tp); |
| 176 | type_list = tp; |
Tim Peters | 3e40c7f | 2003-03-23 03:04:32 +0000 | [diff] [blame] | 177 | #ifdef Py_TRACE_REFS |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 178 | /* Also insert in the doubly-linked list of all objects, |
| 179 | * if not already there. |
| 180 | */ |
| 181 | _Py_AddToAllObjects((PyObject *)tp, 0); |
Tim Peters | 78be799 | 2003-03-23 02:51:01 +0000 | [diff] [blame] | 182 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 183 | } |
| 184 | tp->tp_allocs++; |
| 185 | if (tp->tp_allocs - tp->tp_frees > tp->tp_maxalloc) |
| 186 | tp->tp_maxalloc = tp->tp_allocs - tp->tp_frees; |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 187 | } |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 188 | |
| 189 | void dec_count(PyTypeObject *tp) |
| 190 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 191 | tp->tp_frees++; |
| 192 | if (unlist_types_without_objects && |
| 193 | tp->tp_allocs == tp->tp_frees) { |
| 194 | /* unlink the type from type_list */ |
| 195 | if (tp->tp_prev) |
| 196 | tp->tp_prev->tp_next = tp->tp_next; |
| 197 | else |
| 198 | type_list = tp->tp_next; |
| 199 | if (tp->tp_next) |
| 200 | tp->tp_next->tp_prev = tp->tp_prev; |
| 201 | tp->tp_next = tp->tp_prev = NULL; |
| 202 | Py_DECREF(tp); |
| 203 | } |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 204 | } |
| 205 | |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 206 | #endif |
| 207 | |
Tim Peters | 7c321a8 | 2002-07-09 02:57:01 +0000 | [diff] [blame] | 208 | #ifdef Py_REF_DEBUG |
| 209 | /* Log a fatal error; doesn't return. */ |
| 210 | void |
| 211 | _Py_NegativeRefcount(const char *fname, int lineno, PyObject *op) |
| 212 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 213 | char buf[300]; |
Tim Peters | 7c321a8 | 2002-07-09 02:57:01 +0000 | [diff] [blame] | 214 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 215 | PyOS_snprintf(buf, sizeof(buf), |
| 216 | "%s:%i object at %p has negative ref count " |
| 217 | "%" PY_FORMAT_SIZE_T "d", |
| 218 | fname, lineno, op, op->ob_refcnt); |
| 219 | Py_FatalError(buf); |
Tim Peters | 7c321a8 | 2002-07-09 02:57:01 +0000 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | #endif /* Py_REF_DEBUG */ |
| 223 | |
Thomas Heller | 1328b52 | 2004-04-22 17:23:49 +0000 | [diff] [blame] | 224 | void |
| 225 | Py_IncRef(PyObject *o) |
| 226 | { |
| 227 | Py_XINCREF(o); |
| 228 | } |
| 229 | |
| 230 | void |
| 231 | Py_DecRef(PyObject *o) |
| 232 | { |
| 233 | Py_XDECREF(o); |
| 234 | } |
| 235 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 236 | PyObject * |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 237 | PyObject_Init(PyObject *op, PyTypeObject *tp) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 238 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 239 | if (op == NULL) |
| 240 | return PyErr_NoMemory(); |
| 241 | /* Any changes should be reflected in PyObject_INIT (objimpl.h) */ |
| 242 | Py_TYPE(op) = tp; |
| 243 | _Py_NewReference(op); |
| 244 | return op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 245 | } |
| 246 | |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 247 | PyVarObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 248 | PyObject_InitVar(PyVarObject *op, PyTypeObject *tp, Py_ssize_t size) |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 249 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 250 | if (op == NULL) |
| 251 | return (PyVarObject *) PyErr_NoMemory(); |
| 252 | /* Any changes should be reflected in PyObject_INIT_VAR */ |
| 253 | op->ob_size = size; |
| 254 | Py_TYPE(op) = tp; |
| 255 | _Py_NewReference((PyObject *)op); |
| 256 | return op; |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | PyObject * |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 260 | _PyObject_New(PyTypeObject *tp) |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 261 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 262 | PyObject *op; |
| 263 | op = (PyObject *) PyObject_MALLOC(_PyObject_SIZE(tp)); |
| 264 | if (op == NULL) |
| 265 | return PyErr_NoMemory(); |
| 266 | return PyObject_INIT(op, tp); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 267 | } |
| 268 | |
Guido van Rossum | d0c87ee | 1997-05-15 21:31:03 +0000 | [diff] [blame] | 269 | PyVarObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 270 | _PyObject_NewVar(PyTypeObject *tp, Py_ssize_t nitems) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 271 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 272 | PyVarObject *op; |
| 273 | const size_t size = _PyObject_VAR_SIZE(tp, nitems); |
| 274 | op = (PyVarObject *) PyObject_MALLOC(size); |
| 275 | if (op == NULL) |
| 276 | return (PyVarObject *)PyErr_NoMemory(); |
| 277 | return PyObject_INIT_VAR(op, tp, nitems); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 278 | } |
| 279 | |
Antoine Pitrou | 796564c | 2013-07-30 19:59:21 +0200 | [diff] [blame] | 280 | void |
| 281 | PyObject_CallFinalizer(PyObject *self) |
| 282 | { |
| 283 | PyTypeObject *tp = Py_TYPE(self); |
| 284 | |
| 285 | /* The former could happen on heaptypes created from the C API, e.g. |
| 286 | PyType_FromSpec(). */ |
| 287 | if (!PyType_HasFeature(tp, Py_TPFLAGS_HAVE_FINALIZE) || |
| 288 | tp->tp_finalize == NULL) |
| 289 | return; |
| 290 | /* tp_finalize should only be called once. */ |
| 291 | if (PyType_IS_GC(tp) && _PyGC_FINALIZED(self)) |
| 292 | return; |
| 293 | |
| 294 | tp->tp_finalize(self); |
| 295 | if (PyType_IS_GC(tp)) |
| 296 | _PyGC_SET_FINALIZED(self, 1); |
| 297 | } |
| 298 | |
| 299 | int |
| 300 | PyObject_CallFinalizerFromDealloc(PyObject *self) |
| 301 | { |
| 302 | Py_ssize_t refcnt; |
| 303 | |
| 304 | /* Temporarily resurrect the object. */ |
| 305 | if (self->ob_refcnt != 0) { |
| 306 | Py_FatalError("PyObject_CallFinalizerFromDealloc called on " |
| 307 | "object with a non-zero refcount"); |
| 308 | } |
| 309 | self->ob_refcnt = 1; |
| 310 | |
| 311 | PyObject_CallFinalizer(self); |
| 312 | |
| 313 | /* Undo the temporary resurrection; can't use DECREF here, it would |
| 314 | * cause a recursive call. |
| 315 | */ |
| 316 | assert(self->ob_refcnt > 0); |
| 317 | if (--self->ob_refcnt == 0) |
| 318 | return 0; /* this is the normal path out */ |
| 319 | |
| 320 | /* tp_finalize resurrected it! Make it look like the original Py_DECREF |
| 321 | * never happened. |
| 322 | */ |
| 323 | refcnt = self->ob_refcnt; |
| 324 | _Py_NewReference(self); |
| 325 | self->ob_refcnt = refcnt; |
| 326 | |
| 327 | if (PyType_IS_GC(Py_TYPE(self))) { |
| 328 | assert(_PyGC_REFS(self) != _PyGC_REFS_UNTRACKED); |
| 329 | } |
| 330 | /* If Py_REF_DEBUG, _Py_NewReference bumped _Py_RefTotal, so |
| 331 | * we need to undo that. */ |
| 332 | _Py_DEC_REFTOTAL; |
| 333 | /* If Py_TRACE_REFS, _Py_NewReference re-added self to the object |
| 334 | * chain, so no more to do there. |
| 335 | * If COUNT_ALLOCS, the original decref bumped tp_frees, and |
| 336 | * _Py_NewReference bumped tp_allocs: both of those need to be |
| 337 | * undone. |
| 338 | */ |
| 339 | #ifdef COUNT_ALLOCS |
| 340 | --Py_TYPE(self)->tp_frees; |
| 341 | --Py_TYPE(self)->tp_allocs; |
| 342 | #endif |
| 343 | return -1; |
| 344 | } |
| 345 | |
Antoine Pitrou | c47bd4a | 2010-07-27 22:08:27 +0000 | [diff] [blame] | 346 | int |
| 347 | PyObject_Print(PyObject *op, FILE *fp, int flags) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 348 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 349 | int ret = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 350 | if (PyErr_CheckSignals()) |
| 351 | return -1; |
Guido van Rossum | 9b00dfa | 1998-04-28 16:06:54 +0000 | [diff] [blame] | 352 | #ifdef USE_STACKCHECK |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 353 | if (PyOS_CheckStack()) { |
| 354 | PyErr_SetString(PyExc_MemoryError, "stack overflow"); |
| 355 | return -1; |
| 356 | } |
Guido van Rossum | 9b00dfa | 1998-04-28 16:06:54 +0000 | [diff] [blame] | 357 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 358 | clearerr(fp); /* Clear any previous error condition */ |
| 359 | if (op == NULL) { |
| 360 | Py_BEGIN_ALLOW_THREADS |
| 361 | fprintf(fp, "<nil>"); |
| 362 | Py_END_ALLOW_THREADS |
| 363 | } |
| 364 | else { |
| 365 | if (op->ob_refcnt <= 0) |
| 366 | /* XXX(twouters) cast refcount to long until %zd is |
| 367 | universally available */ |
| 368 | Py_BEGIN_ALLOW_THREADS |
| 369 | fprintf(fp, "<refcnt %ld at %p>", |
| 370 | (long)op->ob_refcnt, op); |
| 371 | Py_END_ALLOW_THREADS |
| 372 | else { |
| 373 | PyObject *s; |
| 374 | if (flags & Py_PRINT_RAW) |
| 375 | s = PyObject_Str(op); |
| 376 | else |
| 377 | s = PyObject_Repr(op); |
| 378 | if (s == NULL) |
| 379 | ret = -1; |
| 380 | else if (PyBytes_Check(s)) { |
| 381 | fwrite(PyBytes_AS_STRING(s), 1, |
| 382 | PyBytes_GET_SIZE(s), fp); |
| 383 | } |
| 384 | else if (PyUnicode_Check(s)) { |
| 385 | PyObject *t; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 386 | t = PyUnicode_AsEncodedString(s, "utf-8", "backslashreplace"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 387 | if (t == NULL) |
| 388 | ret = 0; |
| 389 | else { |
| 390 | fwrite(PyBytes_AS_STRING(t), 1, |
| 391 | PyBytes_GET_SIZE(t), fp); |
Victor Stinner | ba6b430 | 2010-05-17 09:33:42 +0000 | [diff] [blame] | 392 | Py_DECREF(t); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 393 | } |
| 394 | } |
| 395 | else { |
| 396 | PyErr_Format(PyExc_TypeError, |
| 397 | "str() or repr() returned '%.100s'", |
| 398 | s->ob_type->tp_name); |
| 399 | ret = -1; |
| 400 | } |
| 401 | Py_XDECREF(s); |
| 402 | } |
| 403 | } |
| 404 | if (ret == 0) { |
| 405 | if (ferror(fp)) { |
| 406 | PyErr_SetFromErrno(PyExc_IOError); |
| 407 | clearerr(fp); |
| 408 | ret = -1; |
| 409 | } |
| 410 | } |
| 411 | return ret; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 412 | } |
| 413 | |
Guido van Rossum | 3893815 | 2006-08-21 23:36:26 +0000 | [diff] [blame] | 414 | /* For debugging convenience. Set a breakpoint here and call it from your DLL */ |
| 415 | void |
Thomas Wouters | b213704 | 2007-02-01 18:02:27 +0000 | [diff] [blame] | 416 | _Py_BreakPoint(void) |
Guido van Rossum | 3893815 | 2006-08-21 23:36:26 +0000 | [diff] [blame] | 417 | { |
| 418 | } |
| 419 | |
Neal Norwitz | 1a99750 | 2003-01-13 20:13:12 +0000 | [diff] [blame] | 420 | |
Barry Warsaw | 9bf1644 | 2001-01-23 16:24:35 +0000 | [diff] [blame] | 421 | /* For debugging convenience. See Misc/gdbinit for some useful gdb hooks */ |
Guido van Rossum | 3893815 | 2006-08-21 23:36:26 +0000 | [diff] [blame] | 422 | void |
| 423 | _PyObject_Dump(PyObject* op) |
Barry Warsaw | 9bf1644 | 2001-01-23 16:24:35 +0000 | [diff] [blame] | 424 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 425 | if (op == NULL) |
| 426 | fprintf(stderr, "NULL\n"); |
| 427 | else { |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 428 | #ifdef WITH_THREAD |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 429 | PyGILState_STATE gil; |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 430 | #endif |
Victor Stinner | e513210 | 2013-08-26 13:49:06 +0200 | [diff] [blame] | 431 | PyObject *error_type, *error_value, *error_traceback; |
| 432 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 433 | fprintf(stderr, "object : "); |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 434 | #ifdef WITH_THREAD |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 435 | gil = PyGILState_Ensure(); |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 436 | #endif |
Victor Stinner | e513210 | 2013-08-26 13:49:06 +0200 | [diff] [blame] | 437 | |
| 438 | PyErr_Fetch(&error_type, &error_value, &error_traceback); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 439 | (void)PyObject_Print(op, stderr, 0); |
Victor Stinner | e513210 | 2013-08-26 13:49:06 +0200 | [diff] [blame] | 440 | PyErr_Restore(error_type, error_value, error_traceback); |
| 441 | |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 442 | #ifdef WITH_THREAD |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 443 | PyGILState_Release(gil); |
Georg Brandl | dfd7344 | 2009-04-05 11:47:34 +0000 | [diff] [blame] | 444 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 445 | /* XXX(twouters) cast refcount to long until %zd is |
| 446 | universally available */ |
| 447 | fprintf(stderr, "\n" |
| 448 | "type : %s\n" |
| 449 | "refcount: %ld\n" |
| 450 | "address : %p\n", |
| 451 | Py_TYPE(op)==NULL ? "NULL" : Py_TYPE(op)->tp_name, |
| 452 | (long)op->ob_refcnt, |
| 453 | op); |
| 454 | } |
Barry Warsaw | 9bf1644 | 2001-01-23 16:24:35 +0000 | [diff] [blame] | 455 | } |
Barry Warsaw | 903138f | 2001-01-23 16:33:18 +0000 | [diff] [blame] | 456 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 457 | PyObject * |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 458 | PyObject_Repr(PyObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 459 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 460 | PyObject *res; |
| 461 | if (PyErr_CheckSignals()) |
| 462 | return NULL; |
Guido van Rossum | 9b00dfa | 1998-04-28 16:06:54 +0000 | [diff] [blame] | 463 | #ifdef USE_STACKCHECK |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 464 | if (PyOS_CheckStack()) { |
| 465 | PyErr_SetString(PyExc_MemoryError, "stack overflow"); |
| 466 | return NULL; |
| 467 | } |
Guido van Rossum | 9b00dfa | 1998-04-28 16:06:54 +0000 | [diff] [blame] | 468 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 469 | if (v == NULL) |
| 470 | return PyUnicode_FromString("<NULL>"); |
| 471 | if (Py_TYPE(v)->tp_repr == NULL) |
| 472 | return PyUnicode_FromFormat("<%s object at %p>", |
| 473 | v->ob_type->tp_name, v); |
Victor Stinner | 33824f6 | 2013-08-26 14:05:19 +0200 | [diff] [blame] | 474 | |
| 475 | #ifdef Py_DEBUG |
| 476 | /* PyObject_Repr() must not be called with an exception set, |
| 477 | because it may clear it (directly or indirectly) and so the |
Martin Panter | 9955a37 | 2015-10-07 10:26:23 +0000 | [diff] [blame] | 478 | caller loses its exception */ |
Victor Stinner | 33824f6 | 2013-08-26 14:05:19 +0200 | [diff] [blame] | 479 | assert(!PyErr_Occurred()); |
| 480 | #endif |
| 481 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 482 | res = (*v->ob_type->tp_repr)(v); |
Victor Stinner | 0a54cf1 | 2011-12-01 03:22:44 +0100 | [diff] [blame] | 483 | if (res == NULL) |
| 484 | return NULL; |
| 485 | if (!PyUnicode_Check(res)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 486 | PyErr_Format(PyExc_TypeError, |
| 487 | "__repr__ returned non-string (type %.200s)", |
| 488 | res->ob_type->tp_name); |
| 489 | Py_DECREF(res); |
| 490 | return NULL; |
| 491 | } |
Victor Stinner | db88ae5 | 2011-12-01 02:15:00 +0100 | [diff] [blame] | 492 | #ifndef Py_DEBUG |
| 493 | if (PyUnicode_READY(res) < 0) |
| 494 | return NULL; |
| 495 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 496 | return res; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 497 | } |
| 498 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 499 | PyObject * |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 500 | PyObject_Str(PyObject *v) |
Guido van Rossum | c600411 | 1993-11-05 10:22:19 +0000 | [diff] [blame] | 501 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 502 | PyObject *res; |
| 503 | if (PyErr_CheckSignals()) |
| 504 | return NULL; |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 505 | #ifdef USE_STACKCHECK |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 506 | if (PyOS_CheckStack()) { |
| 507 | PyErr_SetString(PyExc_MemoryError, "stack overflow"); |
| 508 | return NULL; |
| 509 | } |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 510 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 511 | if (v == NULL) |
| 512 | return PyUnicode_FromString("<NULL>"); |
| 513 | if (PyUnicode_CheckExact(v)) { |
Victor Stinner | db88ae5 | 2011-12-01 02:15:00 +0100 | [diff] [blame] | 514 | #ifndef Py_DEBUG |
Victor Stinner | 4ead7c7 | 2011-11-20 19:48:36 +0100 | [diff] [blame] | 515 | if (PyUnicode_READY(v) < 0) |
| 516 | return NULL; |
Victor Stinner | db88ae5 | 2011-12-01 02:15:00 +0100 | [diff] [blame] | 517 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 518 | Py_INCREF(v); |
| 519 | return v; |
| 520 | } |
| 521 | if (Py_TYPE(v)->tp_str == NULL) |
| 522 | return PyObject_Repr(v); |
Guido van Rossum | 4f288ab | 2001-05-01 16:53:37 +0000 | [diff] [blame] | 523 | |
Victor Stinner | 33824f6 | 2013-08-26 14:05:19 +0200 | [diff] [blame] | 524 | #ifdef Py_DEBUG |
| 525 | /* PyObject_Str() must not be called with an exception set, |
| 526 | because it may clear it (directly or indirectly) and so the |
Nick Coghlan | d979e43 | 2014-02-09 10:43:21 +1000 | [diff] [blame] | 527 | caller loses its exception */ |
Victor Stinner | 33824f6 | 2013-08-26 14:05:19 +0200 | [diff] [blame] | 528 | assert(!PyErr_Occurred()); |
| 529 | #endif |
| 530 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 531 | /* It is possible for a type to have a tp_str representation that loops |
| 532 | infinitely. */ |
| 533 | if (Py_EnterRecursiveCall(" while getting the str of an object")) |
| 534 | return NULL; |
| 535 | res = (*Py_TYPE(v)->tp_str)(v); |
| 536 | Py_LeaveRecursiveCall(); |
| 537 | if (res == NULL) |
| 538 | return NULL; |
| 539 | if (!PyUnicode_Check(res)) { |
| 540 | PyErr_Format(PyExc_TypeError, |
| 541 | "__str__ returned non-string (type %.200s)", |
| 542 | Py_TYPE(res)->tp_name); |
| 543 | Py_DECREF(res); |
| 544 | return NULL; |
| 545 | } |
Victor Stinner | db88ae5 | 2011-12-01 02:15:00 +0100 | [diff] [blame] | 546 | #ifndef Py_DEBUG |
Victor Stinner | 4ead7c7 | 2011-11-20 19:48:36 +0100 | [diff] [blame] | 547 | if (PyUnicode_READY(res) < 0) |
| 548 | return NULL; |
Victor Stinner | db88ae5 | 2011-12-01 02:15:00 +0100 | [diff] [blame] | 549 | #endif |
Victor Stinner | 4ead7c7 | 2011-11-20 19:48:36 +0100 | [diff] [blame] | 550 | assert(_PyUnicode_CheckConsistency(res, 1)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 551 | return res; |
Neil Schemenauer | cf52c07 | 2005-08-12 17:34:58 +0000 | [diff] [blame] | 552 | } |
| 553 | |
Georg Brandl | 559e5d7 | 2008-06-11 18:37:52 +0000 | [diff] [blame] | 554 | PyObject * |
| 555 | PyObject_ASCII(PyObject *v) |
| 556 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 557 | PyObject *repr, *ascii, *res; |
Georg Brandl | 559e5d7 | 2008-06-11 18:37:52 +0000 | [diff] [blame] | 558 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 559 | repr = PyObject_Repr(v); |
| 560 | if (repr == NULL) |
| 561 | return NULL; |
Georg Brandl | 559e5d7 | 2008-06-11 18:37:52 +0000 | [diff] [blame] | 562 | |
Victor Stinner | af03757 | 2013-04-14 18:44:10 +0200 | [diff] [blame] | 563 | if (PyUnicode_IS_ASCII(repr)) |
| 564 | return repr; |
| 565 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 566 | /* repr is guaranteed to be a PyUnicode object by PyObject_Repr */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 567 | ascii = _PyUnicode_AsASCIIString(repr, "backslashreplace"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 568 | Py_DECREF(repr); |
| 569 | if (ascii == NULL) |
| 570 | return NULL; |
Georg Brandl | 559e5d7 | 2008-06-11 18:37:52 +0000 | [diff] [blame] | 571 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 572 | res = PyUnicode_DecodeASCII( |
| 573 | PyBytes_AS_STRING(ascii), |
| 574 | PyBytes_GET_SIZE(ascii), |
| 575 | NULL); |
| 576 | |
| 577 | Py_DECREF(ascii); |
| 578 | return res; |
Georg Brandl | 559e5d7 | 2008-06-11 18:37:52 +0000 | [diff] [blame] | 579 | } |
Guido van Rossum | a3af41d | 2001-01-18 22:07:06 +0000 | [diff] [blame] | 580 | |
Benjamin Peterson | c15a073 | 2008-08-26 16:46:47 +0000 | [diff] [blame] | 581 | PyObject * |
| 582 | PyObject_Bytes(PyObject *v) |
| 583 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 584 | PyObject *result, *func; |
Benjamin Peterson | c15a073 | 2008-08-26 16:46:47 +0000 | [diff] [blame] | 585 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 586 | if (v == NULL) |
| 587 | return PyBytes_FromString("<NULL>"); |
Benjamin Peterson | c15a073 | 2008-08-26 16:46:47 +0000 | [diff] [blame] | 588 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 589 | if (PyBytes_CheckExact(v)) { |
| 590 | Py_INCREF(v); |
| 591 | return v; |
| 592 | } |
Benjamin Peterson | c15a073 | 2008-08-26 16:46:47 +0000 | [diff] [blame] | 593 | |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 594 | func = _PyObject_LookupSpecial(v, &PyId___bytes__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 595 | if (func != NULL) { |
| 596 | result = PyObject_CallFunctionObjArgs(func, NULL); |
| 597 | Py_DECREF(func); |
| 598 | if (result == NULL) |
Benjamin Peterson | 41ece39 | 2010-09-11 16:39:57 +0000 | [diff] [blame] | 599 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 600 | if (!PyBytes_Check(result)) { |
Benjamin Peterson | 41ece39 | 2010-09-11 16:39:57 +0000 | [diff] [blame] | 601 | PyErr_Format(PyExc_TypeError, |
| 602 | "__bytes__ returned non-bytes (type %.200s)", |
| 603 | Py_TYPE(result)->tp_name); |
| 604 | Py_DECREF(result); |
| 605 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 606 | } |
| 607 | return result; |
| 608 | } |
| 609 | else if (PyErr_Occurred()) |
| 610 | return NULL; |
| 611 | return PyBytes_FromObject(v); |
Benjamin Peterson | c15a073 | 2008-08-26 16:46:47 +0000 | [diff] [blame] | 612 | } |
| 613 | |
Mark Dickinson | c008a17 | 2009-02-01 13:59:22 +0000 | [diff] [blame] | 614 | /* For Python 3.0.1 and later, the old three-way comparison has been |
| 615 | completely removed in favour of rich comparisons. PyObject_Compare() and |
| 616 | PyObject_Cmp() are gone, and the builtin cmp function no longer exists. |
Mark Dickinson | e94c679 | 2009-02-02 20:36:42 +0000 | [diff] [blame] | 617 | The old tp_compare slot has been renamed to tp_reserved, and should no |
Mark Dickinson | c008a17 | 2009-02-01 13:59:22 +0000 | [diff] [blame] | 618 | longer be used. Use tp_richcompare instead. |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 619 | |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 620 | See (*) below for practical amendments. |
| 621 | |
Mark Dickinson | c008a17 | 2009-02-01 13:59:22 +0000 | [diff] [blame] | 622 | tp_richcompare gets called with a first argument of the appropriate type |
| 623 | and a second object of an arbitrary type. We never do any kind of |
| 624 | coercion. |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 625 | |
Mark Dickinson | c008a17 | 2009-02-01 13:59:22 +0000 | [diff] [blame] | 626 | The tp_richcompare slot should return an object, as follows: |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 627 | |
| 628 | NULL if an exception occurred |
| 629 | NotImplemented if the requested comparison is not implemented |
| 630 | any other false value if the requested comparison is false |
| 631 | any other true value if the requested comparison is true |
| 632 | |
| 633 | The PyObject_RichCompare[Bool]() wrappers raise TypeError when they get |
| 634 | NotImplemented. |
| 635 | |
| 636 | (*) Practical amendments: |
| 637 | |
| 638 | - If rich comparison returns NotImplemented, == and != are decided by |
| 639 | comparing the object pointer (i.e. falling back to the base object |
| 640 | implementation). |
| 641 | |
Guido van Rossum | a407300 | 2002-05-31 20:03:54 +0000 | [diff] [blame] | 642 | */ |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 643 | |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 644 | /* Map rich comparison operators to their swapped version, e.g. LT <--> GT */ |
Brett Cannon | a5ca2e7 | 2004-09-25 01:37:24 +0000 | [diff] [blame] | 645 | int _Py_SwappedOp[] = {Py_GT, Py_GE, Py_EQ, Py_NE, Py_LT, Py_LE}; |
Neil Schemenauer | 5ed85ec | 2001-01-04 01:48:10 +0000 | [diff] [blame] | 646 | |
Serhiy Storchaka | 2d06e84 | 2015-12-25 19:53:18 +0200 | [diff] [blame] | 647 | static const char * const opstrings[] = {"<", "<=", "==", "!=", ">", ">="}; |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 648 | |
| 649 | /* Perform a rich comparison, raising TypeError when the requested comparison |
| 650 | operator is not supported. */ |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 651 | static PyObject * |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 652 | do_richcompare(PyObject *v, PyObject *w, int op) |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 653 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 654 | richcmpfunc f; |
| 655 | PyObject *res; |
| 656 | int checked_reverse_op = 0; |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 657 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 658 | if (v->ob_type != w->ob_type && |
| 659 | PyType_IsSubtype(w->ob_type, v->ob_type) && |
| 660 | (f = w->ob_type->tp_richcompare) != NULL) { |
| 661 | checked_reverse_op = 1; |
| 662 | res = (*f)(w, v, _Py_SwappedOp[op]); |
| 663 | if (res != Py_NotImplemented) |
| 664 | return res; |
| 665 | Py_DECREF(res); |
| 666 | } |
| 667 | if ((f = v->ob_type->tp_richcompare) != NULL) { |
| 668 | res = (*f)(v, w, op); |
| 669 | if (res != Py_NotImplemented) |
| 670 | return res; |
| 671 | Py_DECREF(res); |
| 672 | } |
| 673 | if (!checked_reverse_op && (f = w->ob_type->tp_richcompare) != NULL) { |
| 674 | res = (*f)(w, v, _Py_SwappedOp[op]); |
| 675 | if (res != Py_NotImplemented) |
| 676 | return res; |
| 677 | Py_DECREF(res); |
| 678 | } |
| 679 | /* If neither object implements it, provide a sensible default |
| 680 | for == and !=, but raise an exception for ordering. */ |
| 681 | switch (op) { |
| 682 | case Py_EQ: |
| 683 | res = (v == w) ? Py_True : Py_False; |
| 684 | break; |
| 685 | case Py_NE: |
| 686 | res = (v != w) ? Py_True : Py_False; |
| 687 | break; |
| 688 | default: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 689 | PyErr_Format(PyExc_TypeError, |
Victor Stinner | 91108f0 | 2015-10-14 18:25:31 +0200 | [diff] [blame] | 690 | "'%s' not supported between instances of '%.100s' and '%.100s'", |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 691 | opstrings[op], |
Victor Stinner | 91108f0 | 2015-10-14 18:25:31 +0200 | [diff] [blame] | 692 | v->ob_type->tp_name, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 693 | w->ob_type->tp_name); |
| 694 | return NULL; |
| 695 | } |
| 696 | Py_INCREF(res); |
| 697 | return res; |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 698 | } |
| 699 | |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 700 | /* Perform a rich comparison with object result. This wraps do_richcompare() |
| 701 | with a check for NULL arguments and a recursion check. */ |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 702 | |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 703 | PyObject * |
| 704 | PyObject_RichCompare(PyObject *v, PyObject *w, int op) |
| 705 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 706 | PyObject *res; |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 707 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 708 | assert(Py_LT <= op && op <= Py_GE); |
| 709 | if (v == NULL || w == NULL) { |
| 710 | if (!PyErr_Occurred()) |
| 711 | PyErr_BadInternalCall(); |
| 712 | return NULL; |
| 713 | } |
| 714 | if (Py_EnterRecursiveCall(" in comparison")) |
| 715 | return NULL; |
| 716 | res = do_richcompare(v, w, op); |
| 717 | Py_LeaveRecursiveCall(); |
| 718 | return res; |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 719 | } |
| 720 | |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 721 | /* Perform a rich comparison with integer result. This wraps |
| 722 | PyObject_RichCompare(), returning -1 for error, 0 for false, 1 for true. */ |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 723 | int |
| 724 | PyObject_RichCompareBool(PyObject *v, PyObject *w, int op) |
| 725 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 726 | PyObject *res; |
| 727 | int ok; |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 728 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 729 | /* Quick result when objects are the same. |
| 730 | Guarantees that identity implies equality. */ |
| 731 | if (v == w) { |
| 732 | if (op == Py_EQ) |
| 733 | return 1; |
| 734 | else if (op == Py_NE) |
| 735 | return 0; |
| 736 | } |
Mark Dickinson | 4a1f593 | 2008-11-12 23:23:36 +0000 | [diff] [blame] | 737 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 738 | res = PyObject_RichCompare(v, w, op); |
| 739 | if (res == NULL) |
| 740 | return -1; |
| 741 | if (PyBool_Check(res)) |
| 742 | ok = (res == Py_True); |
| 743 | else |
| 744 | ok = PyObject_IsTrue(res); |
| 745 | Py_DECREF(res); |
| 746 | return ok; |
Guido van Rossum | e797ec1 | 2001-01-17 15:24:28 +0000 | [diff] [blame] | 747 | } |
Fred Drake | 13634cf | 2000-06-29 19:17:04 +0000 | [diff] [blame] | 748 | |
Antoine Pitrou | ce4a9da | 2011-11-21 20:46:33 +0100 | [diff] [blame] | 749 | Py_hash_t |
Nick Coghlan | d1abd25 | 2008-07-15 15:46:38 +0000 | [diff] [blame] | 750 | PyObject_HashNotImplemented(PyObject *v) |
| 751 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 752 | PyErr_Format(PyExc_TypeError, "unhashable type: '%.200s'", |
| 753 | Py_TYPE(v)->tp_name); |
| 754 | return -1; |
Nick Coghlan | d1abd25 | 2008-07-15 15:46:38 +0000 | [diff] [blame] | 755 | } |
Fred Drake | 13634cf | 2000-06-29 19:17:04 +0000 | [diff] [blame] | 756 | |
Benjamin Peterson | 8f67d08 | 2010-10-17 20:54:53 +0000 | [diff] [blame] | 757 | Py_hash_t |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 758 | PyObject_Hash(PyObject *v) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 759 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 760 | PyTypeObject *tp = Py_TYPE(v); |
| 761 | if (tp->tp_hash != NULL) |
| 762 | return (*tp->tp_hash)(v); |
| 763 | /* To keep to the general practice that inheriting |
| 764 | * solely from object in C code should work without |
| 765 | * an explicit call to PyType_Ready, we implicitly call |
| 766 | * PyType_Ready here and then check the tp_hash slot again |
| 767 | */ |
| 768 | if (tp->tp_dict == NULL) { |
| 769 | if (PyType_Ready(tp) < 0) |
| 770 | return -1; |
| 771 | if (tp->tp_hash != NULL) |
| 772 | return (*tp->tp_hash)(v); |
| 773 | } |
| 774 | /* Otherwise, the object can't be hashed */ |
| 775 | return PyObject_HashNotImplemented(v); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 776 | } |
| 777 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 778 | PyObject * |
Jeremy Hylton | af68c87 | 2005-12-10 18:50:16 +0000 | [diff] [blame] | 779 | PyObject_GetAttrString(PyObject *v, const char *name) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 780 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 781 | PyObject *w, *res; |
Guido van Rossum | d8eb1b3 | 1996-08-09 20:52:03 +0000 | [diff] [blame] | 782 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 783 | if (Py_TYPE(v)->tp_getattr != NULL) |
| 784 | return (*Py_TYPE(v)->tp_getattr)(v, (char*)name); |
| 785 | w = PyUnicode_InternFromString(name); |
| 786 | if (w == NULL) |
| 787 | return NULL; |
| 788 | res = PyObject_GetAttr(v, w); |
Victor Stinner | 59af08f | 2012-03-22 02:09:08 +0100 | [diff] [blame] | 789 | Py_DECREF(w); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 790 | return res; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 791 | } |
| 792 | |
| 793 | int |
Jeremy Hylton | af68c87 | 2005-12-10 18:50:16 +0000 | [diff] [blame] | 794 | PyObject_HasAttrString(PyObject *v, const char *name) |
Guido van Rossum | ed18fdc | 1993-07-11 19:55:34 +0000 | [diff] [blame] | 795 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 796 | PyObject *res = PyObject_GetAttrString(v, name); |
| 797 | if (res != NULL) { |
| 798 | Py_DECREF(res); |
| 799 | return 1; |
| 800 | } |
| 801 | PyErr_Clear(); |
| 802 | return 0; |
Guido van Rossum | ed18fdc | 1993-07-11 19:55:34 +0000 | [diff] [blame] | 803 | } |
| 804 | |
| 805 | int |
Jeremy Hylton | af68c87 | 2005-12-10 18:50:16 +0000 | [diff] [blame] | 806 | PyObject_SetAttrString(PyObject *v, const char *name, PyObject *w) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 807 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 808 | PyObject *s; |
| 809 | int res; |
Guido van Rossum | d8eb1b3 | 1996-08-09 20:52:03 +0000 | [diff] [blame] | 810 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 811 | if (Py_TYPE(v)->tp_setattr != NULL) |
| 812 | return (*Py_TYPE(v)->tp_setattr)(v, (char*)name, w); |
| 813 | s = PyUnicode_InternFromString(name); |
| 814 | if (s == NULL) |
| 815 | return -1; |
| 816 | res = PyObject_SetAttr(v, s, w); |
| 817 | Py_XDECREF(s); |
| 818 | return res; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 819 | } |
| 820 | |
Benjamin Peterson | bfebb7b | 2011-12-15 15:34:02 -0500 | [diff] [blame] | 821 | int |
| 822 | _PyObject_IsAbstract(PyObject *obj) |
| 823 | { |
| 824 | int res; |
| 825 | PyObject* isabstract; |
Benjamin Peterson | bfebb7b | 2011-12-15 15:34:02 -0500 | [diff] [blame] | 826 | |
| 827 | if (obj == NULL) |
| 828 | return 0; |
| 829 | |
| 830 | isabstract = _PyObject_GetAttrId(obj, &PyId___isabstractmethod__); |
| 831 | if (isabstract == NULL) { |
| 832 | if (PyErr_ExceptionMatches(PyExc_AttributeError)) { |
| 833 | PyErr_Clear(); |
| 834 | return 0; |
| 835 | } |
| 836 | return -1; |
| 837 | } |
| 838 | res = PyObject_IsTrue(isabstract); |
| 839 | Py_DECREF(isabstract); |
| 840 | return res; |
| 841 | } |
| 842 | |
Guido van Rossum | 98ff96a | 1997-05-20 18:34:44 +0000 | [diff] [blame] | 843 | PyObject * |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 844 | _PyObject_GetAttrId(PyObject *v, _Py_Identifier *name) |
| 845 | { |
| 846 | PyObject *result; |
Martin v. Löwis | d10759f | 2011-11-07 13:00:05 +0100 | [diff] [blame] | 847 | PyObject *oname = _PyUnicode_FromId(name); /* borrowed */ |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 848 | if (!oname) |
| 849 | return NULL; |
| 850 | result = PyObject_GetAttr(v, oname); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 851 | return result; |
| 852 | } |
| 853 | |
| 854 | int |
| 855 | _PyObject_HasAttrId(PyObject *v, _Py_Identifier *name) |
| 856 | { |
| 857 | int result; |
Martin v. Löwis | d10759f | 2011-11-07 13:00:05 +0100 | [diff] [blame] | 858 | PyObject *oname = _PyUnicode_FromId(name); /* borrowed */ |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 859 | if (!oname) |
| 860 | return -1; |
| 861 | result = PyObject_HasAttr(v, oname); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 862 | return result; |
| 863 | } |
| 864 | |
| 865 | int |
| 866 | _PyObject_SetAttrId(PyObject *v, _Py_Identifier *name, PyObject *w) |
| 867 | { |
| 868 | int result; |
Martin v. Löwis | d10759f | 2011-11-07 13:00:05 +0100 | [diff] [blame] | 869 | PyObject *oname = _PyUnicode_FromId(name); /* borrowed */ |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 870 | if (!oname) |
| 871 | return -1; |
| 872 | result = PyObject_SetAttr(v, oname, w); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 873 | return result; |
| 874 | } |
| 875 | |
| 876 | PyObject * |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 877 | PyObject_GetAttr(PyObject *v, PyObject *name) |
Guido van Rossum | 98ff96a | 1997-05-20 18:34:44 +0000 | [diff] [blame] | 878 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 879 | PyTypeObject *tp = Py_TYPE(v); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 880 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 881 | if (!PyUnicode_Check(name)) { |
| 882 | PyErr_Format(PyExc_TypeError, |
| 883 | "attribute name must be string, not '%.200s'", |
| 884 | name->ob_type->tp_name); |
| 885 | return NULL; |
| 886 | } |
| 887 | if (tp->tp_getattro != NULL) |
| 888 | return (*tp->tp_getattro)(v, name); |
| 889 | if (tp->tp_getattr != NULL) { |
| 890 | char *name_str = _PyUnicode_AsString(name); |
| 891 | if (name_str == NULL) |
| 892 | return NULL; |
| 893 | return (*tp->tp_getattr)(v, name_str); |
| 894 | } |
| 895 | PyErr_Format(PyExc_AttributeError, |
| 896 | "'%.50s' object has no attribute '%U'", |
| 897 | tp->tp_name, name); |
| 898 | return NULL; |
Guido van Rossum | 98ff96a | 1997-05-20 18:34:44 +0000 | [diff] [blame] | 899 | } |
| 900 | |
| 901 | int |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 902 | PyObject_HasAttr(PyObject *v, PyObject *name) |
Guido van Rossum | 98ff96a | 1997-05-20 18:34:44 +0000 | [diff] [blame] | 903 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 904 | PyObject *res = PyObject_GetAttr(v, name); |
| 905 | if (res != NULL) { |
| 906 | Py_DECREF(res); |
| 907 | return 1; |
| 908 | } |
| 909 | PyErr_Clear(); |
| 910 | return 0; |
Guido van Rossum | 98ff96a | 1997-05-20 18:34:44 +0000 | [diff] [blame] | 911 | } |
| 912 | |
| 913 | int |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 914 | PyObject_SetAttr(PyObject *v, PyObject *name, PyObject *value) |
Guido van Rossum | 98ff96a | 1997-05-20 18:34:44 +0000 | [diff] [blame] | 915 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 916 | PyTypeObject *tp = Py_TYPE(v); |
| 917 | int err; |
Marc-André Lemburg | e44e507 | 2000-09-18 16:20:57 +0000 | [diff] [blame] | 918 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 919 | if (!PyUnicode_Check(name)) { |
| 920 | PyErr_Format(PyExc_TypeError, |
| 921 | "attribute name must be string, not '%.200s'", |
| 922 | name->ob_type->tp_name); |
| 923 | return -1; |
| 924 | } |
| 925 | Py_INCREF(name); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 926 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 927 | PyUnicode_InternInPlace(&name); |
| 928 | if (tp->tp_setattro != NULL) { |
| 929 | err = (*tp->tp_setattro)(v, name, value); |
| 930 | Py_DECREF(name); |
| 931 | return err; |
| 932 | } |
| 933 | if (tp->tp_setattr != NULL) { |
| 934 | char *name_str = _PyUnicode_AsString(name); |
| 935 | if (name_str == NULL) |
| 936 | return -1; |
| 937 | err = (*tp->tp_setattr)(v, name_str, value); |
| 938 | Py_DECREF(name); |
| 939 | return err; |
| 940 | } |
| 941 | Py_DECREF(name); |
| 942 | assert(name->ob_refcnt >= 1); |
| 943 | if (tp->tp_getattr == NULL && tp->tp_getattro == NULL) |
| 944 | PyErr_Format(PyExc_TypeError, |
| 945 | "'%.100s' object has no attributes " |
| 946 | "(%s .%U)", |
| 947 | tp->tp_name, |
| 948 | value==NULL ? "del" : "assign to", |
| 949 | name); |
| 950 | else |
| 951 | PyErr_Format(PyExc_TypeError, |
| 952 | "'%.100s' object has only read-only attributes " |
| 953 | "(%s .%U)", |
| 954 | tp->tp_name, |
| 955 | value==NULL ? "del" : "assign to", |
| 956 | name); |
| 957 | return -1; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 958 | } |
| 959 | |
| 960 | /* Helper to get a pointer to an object's __dict__ slot, if any */ |
| 961 | |
| 962 | PyObject ** |
| 963 | _PyObject_GetDictPtr(PyObject *obj) |
| 964 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 965 | Py_ssize_t dictoffset; |
| 966 | PyTypeObject *tp = Py_TYPE(obj); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 967 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 968 | dictoffset = tp->tp_dictoffset; |
| 969 | if (dictoffset == 0) |
| 970 | return NULL; |
| 971 | if (dictoffset < 0) { |
| 972 | Py_ssize_t tsize; |
| 973 | size_t size; |
Guido van Rossum | 2eb0b87 | 2002-03-01 22:24:49 +0000 | [diff] [blame] | 974 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 975 | tsize = ((PyVarObject *)obj)->ob_size; |
| 976 | if (tsize < 0) |
| 977 | tsize = -tsize; |
| 978 | size = _PyObject_VAR_SIZE(tp, tsize); |
Guido van Rossum | 2eb0b87 | 2002-03-01 22:24:49 +0000 | [diff] [blame] | 979 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 980 | dictoffset += (long)size; |
| 981 | assert(dictoffset > 0); |
| 982 | assert(dictoffset % SIZEOF_VOID_P == 0); |
| 983 | } |
| 984 | return (PyObject **) ((char *)obj + dictoffset); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 985 | } |
| 986 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 987 | PyObject * |
Raymond Hettinger | 1da1dbf | 2003-03-17 19:46:11 +0000 | [diff] [blame] | 988 | PyObject_SelfIter(PyObject *obj) |
Raymond Hettinger | 0153826 | 2003-03-17 08:24:35 +0000 | [diff] [blame] | 989 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 990 | Py_INCREF(obj); |
| 991 | return obj; |
Raymond Hettinger | 0153826 | 2003-03-17 08:24:35 +0000 | [diff] [blame] | 992 | } |
| 993 | |
Antoine Pitrou | a701388 | 2012-04-05 00:04:20 +0200 | [diff] [blame] | 994 | /* Convenience function to get a builtin from its name */ |
| 995 | PyObject * |
| 996 | _PyObject_GetBuiltin(const char *name) |
| 997 | { |
Victor Stinner | 53e9ec4 | 2013-11-07 00:43:05 +0100 | [diff] [blame] | 998 | PyObject *mod_name, *mod, *attr; |
| 999 | |
Victor Stinner | bd303c1 | 2013-11-07 23:07:29 +0100 | [diff] [blame] | 1000 | mod_name = _PyUnicode_FromId(&PyId_builtins); /* borrowed */ |
Victor Stinner | 53e9ec4 | 2013-11-07 00:43:05 +0100 | [diff] [blame] | 1001 | if (mod_name == NULL) |
| 1002 | return NULL; |
| 1003 | mod = PyImport_Import(mod_name); |
Antoine Pitrou | a701388 | 2012-04-05 00:04:20 +0200 | [diff] [blame] | 1004 | if (mod == NULL) |
| 1005 | return NULL; |
| 1006 | attr = PyObject_GetAttrString(mod, name); |
| 1007 | Py_DECREF(mod); |
| 1008 | return attr; |
| 1009 | } |
| 1010 | |
Amaury Forgeot d'Arc | f343e01 | 2009-01-12 23:58:21 +0000 | [diff] [blame] | 1011 | /* Helper used when the __next__ method is removed from a type: |
| 1012 | tp_iternext is never NULL and can be safely called without checking |
| 1013 | on every iteration. |
| 1014 | */ |
| 1015 | |
| 1016 | PyObject * |
| 1017 | _PyObject_NextNotImplemented(PyObject *self) |
| 1018 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1019 | PyErr_Format(PyExc_TypeError, |
| 1020 | "'%.200s' object is not iterable", |
| 1021 | Py_TYPE(self)->tp_name); |
| 1022 | return NULL; |
Amaury Forgeot d'Arc | f343e01 | 2009-01-12 23:58:21 +0000 | [diff] [blame] | 1023 | } |
| 1024 | |
Michael W. Hudson | 1593f50 | 2004-09-14 17:09:47 +0000 | [diff] [blame] | 1025 | /* Generic GetAttr functions - put these in your tp_[gs]etattro slot */ |
| 1026 | |
Raymond Hettinger | 0153826 | 2003-03-17 08:24:35 +0000 | [diff] [blame] | 1027 | PyObject * |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1028 | _PyObject_GenericGetAttrWithDict(PyObject *obj, PyObject *name, PyObject *dict) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1029 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1030 | PyTypeObject *tp = Py_TYPE(obj); |
| 1031 | PyObject *descr = NULL; |
| 1032 | PyObject *res = NULL; |
| 1033 | descrgetfunc f; |
| 1034 | Py_ssize_t dictoffset; |
| 1035 | PyObject **dictptr; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1036 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1037 | if (!PyUnicode_Check(name)){ |
| 1038 | PyErr_Format(PyExc_TypeError, |
| 1039 | "attribute name must be string, not '%.200s'", |
| 1040 | name->ob_type->tp_name); |
| 1041 | return NULL; |
| 1042 | } |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1043 | Py_INCREF(name); |
Guido van Rossum | ebca9fc | 2001-12-04 15:54:53 +0000 | [diff] [blame] | 1044 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1045 | if (tp->tp_dict == NULL) { |
| 1046 | if (PyType_Ready(tp) < 0) |
| 1047 | goto done; |
| 1048 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1049 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1050 | descr = _PyType_Lookup(tp, name); |
Michael W. Hudson | b2c7de4 | 2003-08-15 13:07:47 +0000 | [diff] [blame] | 1051 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1052 | f = NULL; |
| 1053 | if (descr != NULL) { |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1054 | Py_INCREF(descr); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1055 | f = descr->ob_type->tp_descr_get; |
| 1056 | if (f != NULL && PyDescr_IsData(descr)) { |
| 1057 | res = f(descr, obj, (PyObject *)obj->ob_type); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1058 | goto done; |
| 1059 | } |
| 1060 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1061 | |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1062 | if (dict == NULL) { |
| 1063 | /* Inline _PyObject_GetDictPtr */ |
| 1064 | dictoffset = tp->tp_dictoffset; |
| 1065 | if (dictoffset != 0) { |
| 1066 | if (dictoffset < 0) { |
| 1067 | Py_ssize_t tsize; |
| 1068 | size_t size; |
Guido van Rossum | c66ff44 | 2002-08-19 16:50:48 +0000 | [diff] [blame] | 1069 | |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1070 | tsize = ((PyVarObject *)obj)->ob_size; |
| 1071 | if (tsize < 0) |
| 1072 | tsize = -tsize; |
| 1073 | size = _PyObject_VAR_SIZE(tp, tsize); |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1074 | assert(size <= PY_SSIZE_T_MAX); |
Guido van Rossum | c66ff44 | 2002-08-19 16:50:48 +0000 | [diff] [blame] | 1075 | |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1076 | dictoffset += (Py_ssize_t)size; |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1077 | assert(dictoffset > 0); |
| 1078 | assert(dictoffset % SIZEOF_VOID_P == 0); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1079 | } |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1080 | dictptr = (PyObject **) ((char *)obj + dictoffset); |
| 1081 | dict = *dictptr; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1082 | } |
| 1083 | } |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1084 | if (dict != NULL) { |
| 1085 | Py_INCREF(dict); |
| 1086 | res = PyDict_GetItem(dict, name); |
| 1087 | if (res != NULL) { |
| 1088 | Py_INCREF(res); |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1089 | Py_DECREF(dict); |
| 1090 | goto done; |
| 1091 | } |
| 1092 | Py_DECREF(dict); |
| 1093 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1094 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1095 | if (f != NULL) { |
| 1096 | res = f(descr, obj, (PyObject *)Py_TYPE(obj)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1097 | goto done; |
| 1098 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1099 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1100 | if (descr != NULL) { |
| 1101 | res = descr; |
Victor Stinner | 2d01dc0 | 2012-03-09 00:44:13 +0100 | [diff] [blame] | 1102 | descr = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1103 | goto done; |
| 1104 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1105 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1106 | PyErr_Format(PyExc_AttributeError, |
| 1107 | "'%.50s' object has no attribute '%U'", |
| 1108 | tp->tp_name, name); |
Guido van Rossum | ebca9fc | 2001-12-04 15:54:53 +0000 | [diff] [blame] | 1109 | done: |
Victor Stinner | 2d01dc0 | 2012-03-09 00:44:13 +0100 | [diff] [blame] | 1110 | Py_XDECREF(descr); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1111 | Py_DECREF(name); |
| 1112 | return res; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1113 | } |
| 1114 | |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1115 | PyObject * |
| 1116 | PyObject_GenericGetAttr(PyObject *obj, PyObject *name) |
| 1117 | { |
| 1118 | return _PyObject_GenericGetAttrWithDict(obj, name, NULL); |
| 1119 | } |
| 1120 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1121 | int |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1122 | _PyObject_GenericSetAttrWithDict(PyObject *obj, PyObject *name, |
| 1123 | PyObject *value, PyObject *dict) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1124 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1125 | PyTypeObject *tp = Py_TYPE(obj); |
| 1126 | PyObject *descr; |
| 1127 | descrsetfunc f; |
| 1128 | PyObject **dictptr; |
| 1129 | int res = -1; |
Guido van Rossum | ebca9fc | 2001-12-04 15:54:53 +0000 | [diff] [blame] | 1130 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1131 | if (!PyUnicode_Check(name)){ |
| 1132 | PyErr_Format(PyExc_TypeError, |
| 1133 | "attribute name must be string, not '%.200s'", |
| 1134 | name->ob_type->tp_name); |
| 1135 | return -1; |
| 1136 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1137 | |
Benjamin Peterson | 74529ad | 2012-03-09 07:25:32 -0800 | [diff] [blame] | 1138 | if (tp->tp_dict == NULL && PyType_Ready(tp) < 0) |
| 1139 | return -1; |
| 1140 | |
| 1141 | Py_INCREF(name); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1142 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1143 | descr = _PyType_Lookup(tp, name); |
Victor Stinner | 2d01dc0 | 2012-03-09 00:44:13 +0100 | [diff] [blame] | 1144 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1145 | if (descr != NULL) { |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1146 | Py_INCREF(descr); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1147 | f = descr->ob_type->tp_descr_set; |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1148 | if (f != NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1149 | res = f(descr, obj, value); |
| 1150 | goto done; |
| 1151 | } |
| 1152 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1153 | |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1154 | if (dict == NULL) { |
| 1155 | dictptr = _PyObject_GetDictPtr(obj); |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1156 | if (dictptr == NULL) { |
| 1157 | if (descr == NULL) { |
| 1158 | PyErr_Format(PyExc_AttributeError, |
| 1159 | "'%.100s' object has no attribute '%U'", |
| 1160 | tp->tp_name, name); |
| 1161 | } |
| 1162 | else { |
| 1163 | PyErr_Format(PyExc_AttributeError, |
| 1164 | "'%.50s' object attribute '%U' is read-only", |
| 1165 | tp->tp_name, name); |
| 1166 | } |
Benjamin Peterson | 7d95e40 | 2012-04-23 11:24:50 -0400 | [diff] [blame] | 1167 | goto done; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1168 | } |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1169 | res = _PyObjectDict_SetItem(tp, dictptr, name, value); |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1170 | } |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1171 | else { |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1172 | Py_INCREF(dict); |
| 1173 | if (value == NULL) |
| 1174 | res = PyDict_DelItem(dict, name); |
| 1175 | else |
| 1176 | res = PyDict_SetItem(dict, name, value); |
Benjamin Peterson | 74529ad | 2012-03-09 07:25:32 -0800 | [diff] [blame] | 1177 | Py_DECREF(dict); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1178 | } |
Serhiy Storchaka | 55c861f | 2016-04-17 20:31:51 +0300 | [diff] [blame^] | 1179 | if (res < 0 && PyErr_ExceptionMatches(PyExc_KeyError)) |
| 1180 | PyErr_SetObject(PyExc_AttributeError, name); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1181 | |
Guido van Rossum | ebca9fc | 2001-12-04 15:54:53 +0000 | [diff] [blame] | 1182 | done: |
Victor Stinner | 2d01dc0 | 2012-03-09 00:44:13 +0100 | [diff] [blame] | 1183 | Py_XDECREF(descr); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1184 | Py_DECREF(name); |
| 1185 | return res; |
Guido van Rossum | 98ff96a | 1997-05-20 18:34:44 +0000 | [diff] [blame] | 1186 | } |
| 1187 | |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1188 | int |
| 1189 | PyObject_GenericSetAttr(PyObject *obj, PyObject *name, PyObject *value) |
| 1190 | { |
| 1191 | return _PyObject_GenericSetAttrWithDict(obj, name, value, NULL); |
| 1192 | } |
| 1193 | |
Benjamin Peterson | 8eb1269 | 2012-02-19 19:59:10 -0500 | [diff] [blame] | 1194 | int |
| 1195 | PyObject_GenericSetDict(PyObject *obj, PyObject *value, void *context) |
| 1196 | { |
Serhiy Storchaka | 576f132 | 2016-01-05 21:27:54 +0200 | [diff] [blame] | 1197 | PyObject **dictptr = _PyObject_GetDictPtr(obj); |
Benjamin Peterson | 8eb1269 | 2012-02-19 19:59:10 -0500 | [diff] [blame] | 1198 | if (dictptr == NULL) { |
| 1199 | PyErr_SetString(PyExc_AttributeError, |
| 1200 | "This object has no __dict__"); |
| 1201 | return -1; |
| 1202 | } |
| 1203 | if (value == NULL) { |
| 1204 | PyErr_SetString(PyExc_TypeError, "cannot delete __dict__"); |
| 1205 | return -1; |
| 1206 | } |
| 1207 | if (!PyDict_Check(value)) { |
| 1208 | PyErr_Format(PyExc_TypeError, |
| 1209 | "__dict__ must be set to a dictionary, " |
| 1210 | "not a '%.200s'", Py_TYPE(value)->tp_name); |
| 1211 | return -1; |
| 1212 | } |
Serhiy Storchaka | 576f132 | 2016-01-05 21:27:54 +0200 | [diff] [blame] | 1213 | Py_INCREF(value); |
Serhiy Storchaka | ec39756 | 2016-04-06 09:50:03 +0300 | [diff] [blame] | 1214 | Py_XSETREF(*dictptr, value); |
Benjamin Peterson | 8eb1269 | 2012-02-19 19:59:10 -0500 | [diff] [blame] | 1215 | return 0; |
| 1216 | } |
| 1217 | |
Antoine Pitrou | 1a9a9d5 | 2010-08-28 18:17:03 +0000 | [diff] [blame] | 1218 | |
Guido van Rossum | 6ac258d | 1993-05-12 08:24:20 +0000 | [diff] [blame] | 1219 | /* Test a value used as condition, e.g., in a for or if statement. |
| 1220 | Return -1 if an error occurred */ |
| 1221 | |
| 1222 | int |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1223 | PyObject_IsTrue(PyObject *v) |
Guido van Rossum | 6ac258d | 1993-05-12 08:24:20 +0000 | [diff] [blame] | 1224 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1225 | Py_ssize_t res; |
| 1226 | if (v == Py_True) |
| 1227 | return 1; |
| 1228 | if (v == Py_False) |
| 1229 | return 0; |
| 1230 | if (v == Py_None) |
| 1231 | return 0; |
| 1232 | else if (v->ob_type->tp_as_number != NULL && |
| 1233 | v->ob_type->tp_as_number->nb_bool != NULL) |
| 1234 | res = (*v->ob_type->tp_as_number->nb_bool)(v); |
| 1235 | else if (v->ob_type->tp_as_mapping != NULL && |
| 1236 | v->ob_type->tp_as_mapping->mp_length != NULL) |
| 1237 | res = (*v->ob_type->tp_as_mapping->mp_length)(v); |
| 1238 | else if (v->ob_type->tp_as_sequence != NULL && |
| 1239 | v->ob_type->tp_as_sequence->sq_length != NULL) |
| 1240 | res = (*v->ob_type->tp_as_sequence->sq_length)(v); |
| 1241 | else |
| 1242 | return 1; |
| 1243 | /* if it is negative, it should be either -1 or -2 */ |
| 1244 | return (res > 0) ? 1 : Py_SAFE_DOWNCAST(res, Py_ssize_t, int); |
Guido van Rossum | 6ac258d | 1993-05-12 08:24:20 +0000 | [diff] [blame] | 1245 | } |
| 1246 | |
Tim Peters | 803526b | 2002-07-07 05:13:56 +0000 | [diff] [blame] | 1247 | /* equivalent of 'not v' |
Guido van Rossum | c3d3f96 | 1998-04-09 17:53:59 +0000 | [diff] [blame] | 1248 | Return -1 if an error occurred */ |
| 1249 | |
| 1250 | int |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1251 | PyObject_Not(PyObject *v) |
Guido van Rossum | c3d3f96 | 1998-04-09 17:53:59 +0000 | [diff] [blame] | 1252 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1253 | int res; |
| 1254 | res = PyObject_IsTrue(v); |
| 1255 | if (res < 0) |
| 1256 | return res; |
| 1257 | return res == 0; |
Guido van Rossum | c3d3f96 | 1998-04-09 17:53:59 +0000 | [diff] [blame] | 1258 | } |
| 1259 | |
Guido van Rossum | 49b11fe | 1995-01-26 00:38:22 +0000 | [diff] [blame] | 1260 | /* Test whether an object can be called */ |
| 1261 | |
| 1262 | int |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1263 | PyCallable_Check(PyObject *x) |
Guido van Rossum | 49b11fe | 1995-01-26 00:38:22 +0000 | [diff] [blame] | 1264 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1265 | if (x == NULL) |
| 1266 | return 0; |
| 1267 | return x->ob_type->tp_call != NULL; |
Guido van Rossum | 49b11fe | 1995-01-26 00:38:22 +0000 | [diff] [blame] | 1268 | } |
| 1269 | |
Tim Peters | 7eea37e | 2001-09-04 22:08:56 +0000 | [diff] [blame] | 1270 | |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 1271 | /* Helper for PyObject_Dir without arguments: returns the local scope. */ |
| 1272 | static PyObject * |
Guido van Rossum | ad7d8d1 | 2007-04-13 01:39:34 +0000 | [diff] [blame] | 1273 | _dir_locals(void) |
Tim Peters | 305b585 | 2001-09-17 02:38:46 +0000 | [diff] [blame] | 1274 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1275 | PyObject *names; |
Victor Stinner | 41bb43a | 2013-10-29 01:19:37 +0100 | [diff] [blame] | 1276 | PyObject *locals; |
Tim Peters | 305b585 | 2001-09-17 02:38:46 +0000 | [diff] [blame] | 1277 | |
Victor Stinner | 41bb43a | 2013-10-29 01:19:37 +0100 | [diff] [blame] | 1278 | locals = PyEval_GetLocals(); |
| 1279 | if (locals == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1280 | return NULL; |
Tim Peters | 305b585 | 2001-09-17 02:38:46 +0000 | [diff] [blame] | 1281 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1282 | names = PyMapping_Keys(locals); |
| 1283 | if (!names) |
| 1284 | return NULL; |
| 1285 | if (!PyList_Check(names)) { |
| 1286 | PyErr_Format(PyExc_TypeError, |
| 1287 | "dir(): expected keys() of locals to be a list, " |
| 1288 | "not '%.200s'", Py_TYPE(names)->tp_name); |
| 1289 | Py_DECREF(names); |
| 1290 | return NULL; |
| 1291 | } |
Benjamin Peterson | 3bbb722 | 2011-06-11 16:12:08 -0500 | [diff] [blame] | 1292 | if (PyList_Sort(names)) { |
| 1293 | Py_DECREF(names); |
| 1294 | return NULL; |
| 1295 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1296 | /* the locals don't need to be DECREF'd */ |
| 1297 | return names; |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 1298 | } |
| 1299 | |
Benjamin Peterson | 82b00c1 | 2011-05-24 11:09:06 -0500 | [diff] [blame] | 1300 | /* Helper for PyObject_Dir: object introspection. */ |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 1301 | static PyObject * |
| 1302 | _dir_object(PyObject *obj) |
| 1303 | { |
Benjamin Peterson | 3bbb722 | 2011-06-11 16:12:08 -0500 | [diff] [blame] | 1304 | PyObject *result, *sorted; |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 1305 | PyObject *dirfunc = _PyObject_LookupSpecial(obj, &PyId___dir__); |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 1306 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1307 | assert(obj); |
| 1308 | if (dirfunc == NULL) { |
Benjamin Peterson | 82b00c1 | 2011-05-24 11:09:06 -0500 | [diff] [blame] | 1309 | if (!PyErr_Occurred()) |
| 1310 | PyErr_SetString(PyExc_TypeError, "object does not provide __dir__"); |
| 1311 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1312 | } |
Benjamin Peterson | 82b00c1 | 2011-05-24 11:09:06 -0500 | [diff] [blame] | 1313 | /* use __dir__ */ |
| 1314 | result = PyObject_CallFunctionObjArgs(dirfunc, NULL); |
| 1315 | Py_DECREF(dirfunc); |
| 1316 | if (result == NULL) |
| 1317 | return NULL; |
Benjamin Peterson | 3bbb722 | 2011-06-11 16:12:08 -0500 | [diff] [blame] | 1318 | /* return sorted(result) */ |
| 1319 | sorted = PySequence_List(result); |
| 1320 | Py_DECREF(result); |
| 1321 | if (sorted == NULL) |
| 1322 | return NULL; |
| 1323 | if (PyList_Sort(sorted)) { |
| 1324 | Py_DECREF(sorted); |
| 1325 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1326 | } |
Benjamin Peterson | 3bbb722 | 2011-06-11 16:12:08 -0500 | [diff] [blame] | 1327 | return sorted; |
Georg Brandl | e32b422 | 2007-03-10 22:13:27 +0000 | [diff] [blame] | 1328 | } |
| 1329 | |
| 1330 | /* Implementation of dir() -- if obj is NULL, returns the names in the current |
| 1331 | (local) scope. Otherwise, performs introspection of the object: returns a |
| 1332 | sorted list of attribute names (supposedly) accessible from the object |
| 1333 | */ |
| 1334 | PyObject * |
| 1335 | PyObject_Dir(PyObject *obj) |
| 1336 | { |
Benjamin Peterson | 3bbb722 | 2011-06-11 16:12:08 -0500 | [diff] [blame] | 1337 | return (obj == NULL) ? _dir_locals() : _dir_object(obj); |
Tim Peters | 7eea37e | 2001-09-04 22:08:56 +0000 | [diff] [blame] | 1338 | } |
Guido van Rossum | 49b11fe | 1995-01-26 00:38:22 +0000 | [diff] [blame] | 1339 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1340 | /* |
Raymond Hettinger | 66d2be8 | 2011-07-28 09:55:13 -0700 | [diff] [blame] | 1341 | None is a non-NULL undefined value. |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1342 | There is (and should be!) no way to create other objects of this type, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1343 | so there is exactly one (which is indestructible, by the way). |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1344 | */ |
| 1345 | |
Guido van Rossum | 0c182a1 | 1992-03-27 17:26:13 +0000 | [diff] [blame] | 1346 | /* ARGSUSED */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1347 | static PyObject * |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1348 | none_repr(PyObject *op) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1349 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1350 | return PyUnicode_FromString("None"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1351 | } |
| 1352 | |
Barry Warsaw | 9bf1644 | 2001-01-23 16:24:35 +0000 | [diff] [blame] | 1353 | /* ARGUSED */ |
| 1354 | static void |
Tim Peters | 803526b | 2002-07-07 05:13:56 +0000 | [diff] [blame] | 1355 | none_dealloc(PyObject* ignore) |
Barry Warsaw | 9bf1644 | 2001-01-23 16:24:35 +0000 | [diff] [blame] | 1356 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1357 | /* This should never get called, but we also don't want to SEGV if |
| 1358 | * we accidentally decref None out of existence. |
| 1359 | */ |
| 1360 | Py_FatalError("deallocating None"); |
Barry Warsaw | 9bf1644 | 2001-01-23 16:24:35 +0000 | [diff] [blame] | 1361 | } |
| 1362 | |
Benjamin Peterson | c4607ae | 2011-07-29 18:19:43 -0500 | [diff] [blame] | 1363 | static PyObject * |
| 1364 | none_new(PyTypeObject *type, PyObject *args, PyObject *kwargs) |
| 1365 | { |
| 1366 | if (PyTuple_GET_SIZE(args) || (kwargs && PyDict_Size(kwargs))) { |
| 1367 | PyErr_SetString(PyExc_TypeError, "NoneType takes no arguments"); |
| 1368 | return NULL; |
| 1369 | } |
| 1370 | Py_RETURN_NONE; |
| 1371 | } |
| 1372 | |
Raymond Hettinger | 66d2be8 | 2011-07-28 09:55:13 -0700 | [diff] [blame] | 1373 | static int |
| 1374 | none_bool(PyObject *v) |
| 1375 | { |
| 1376 | return 0; |
| 1377 | } |
| 1378 | |
| 1379 | static PyNumberMethods none_as_number = { |
| 1380 | 0, /* nb_add */ |
| 1381 | 0, /* nb_subtract */ |
| 1382 | 0, /* nb_multiply */ |
| 1383 | 0, /* nb_remainder */ |
| 1384 | 0, /* nb_divmod */ |
| 1385 | 0, /* nb_power */ |
| 1386 | 0, /* nb_negative */ |
| 1387 | 0, /* nb_positive */ |
| 1388 | 0, /* nb_absolute */ |
| 1389 | (inquiry)none_bool, /* nb_bool */ |
| 1390 | 0, /* nb_invert */ |
| 1391 | 0, /* nb_lshift */ |
| 1392 | 0, /* nb_rshift */ |
| 1393 | 0, /* nb_and */ |
| 1394 | 0, /* nb_xor */ |
| 1395 | 0, /* nb_or */ |
| 1396 | 0, /* nb_int */ |
| 1397 | 0, /* nb_reserved */ |
| 1398 | 0, /* nb_float */ |
| 1399 | 0, /* nb_inplace_add */ |
| 1400 | 0, /* nb_inplace_subtract */ |
| 1401 | 0, /* nb_inplace_multiply */ |
| 1402 | 0, /* nb_inplace_remainder */ |
| 1403 | 0, /* nb_inplace_power */ |
| 1404 | 0, /* nb_inplace_lshift */ |
| 1405 | 0, /* nb_inplace_rshift */ |
| 1406 | 0, /* nb_inplace_and */ |
| 1407 | 0, /* nb_inplace_xor */ |
| 1408 | 0, /* nb_inplace_or */ |
| 1409 | 0, /* nb_floor_divide */ |
| 1410 | 0, /* nb_true_divide */ |
| 1411 | 0, /* nb_inplace_floor_divide */ |
| 1412 | 0, /* nb_inplace_true_divide */ |
| 1413 | 0, /* nb_index */ |
| 1414 | }; |
Barry Warsaw | 9bf1644 | 2001-01-23 16:24:35 +0000 | [diff] [blame] | 1415 | |
Alexandre Vassalotti | 65846c6 | 2013-11-30 17:55:48 -0800 | [diff] [blame] | 1416 | PyTypeObject _PyNone_Type = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1417 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 1418 | "NoneType", |
| 1419 | 0, |
| 1420 | 0, |
| 1421 | none_dealloc, /*tp_dealloc*/ /*never called*/ |
| 1422 | 0, /*tp_print*/ |
| 1423 | 0, /*tp_getattr*/ |
| 1424 | 0, /*tp_setattr*/ |
| 1425 | 0, /*tp_reserved*/ |
| 1426 | none_repr, /*tp_repr*/ |
Raymond Hettinger | 66d2be8 | 2011-07-28 09:55:13 -0700 | [diff] [blame] | 1427 | &none_as_number, /*tp_as_number*/ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1428 | 0, /*tp_as_sequence*/ |
| 1429 | 0, /*tp_as_mapping*/ |
| 1430 | 0, /*tp_hash */ |
Benjamin Peterson | c4607ae | 2011-07-29 18:19:43 -0500 | [diff] [blame] | 1431 | 0, /*tp_call */ |
| 1432 | 0, /*tp_str */ |
| 1433 | 0, /*tp_getattro */ |
| 1434 | 0, /*tp_setattro */ |
| 1435 | 0, /*tp_as_buffer */ |
| 1436 | Py_TPFLAGS_DEFAULT, /*tp_flags */ |
| 1437 | 0, /*tp_doc */ |
| 1438 | 0, /*tp_traverse */ |
| 1439 | 0, /*tp_clear */ |
| 1440 | 0, /*tp_richcompare */ |
| 1441 | 0, /*tp_weaklistoffset */ |
| 1442 | 0, /*tp_iter */ |
| 1443 | 0, /*tp_iternext */ |
| 1444 | 0, /*tp_methods */ |
| 1445 | 0, /*tp_members */ |
| 1446 | 0, /*tp_getset */ |
| 1447 | 0, /*tp_base */ |
| 1448 | 0, /*tp_dict */ |
| 1449 | 0, /*tp_descr_get */ |
| 1450 | 0, /*tp_descr_set */ |
| 1451 | 0, /*tp_dictoffset */ |
| 1452 | 0, /*tp_init */ |
| 1453 | 0, /*tp_alloc */ |
| 1454 | none_new, /*tp_new */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1455 | }; |
| 1456 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1457 | PyObject _Py_NoneStruct = { |
Martin v. Löwis | 9f2e346 | 2007-07-21 17:22:18 +0000 | [diff] [blame] | 1458 | _PyObject_EXTRA_INIT |
Alexandre Vassalotti | 65846c6 | 2013-11-30 17:55:48 -0800 | [diff] [blame] | 1459 | 1, &_PyNone_Type |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1460 | }; |
| 1461 | |
Neil Schemenauer | 5ed85ec | 2001-01-04 01:48:10 +0000 | [diff] [blame] | 1462 | /* NotImplemented is an object that can be used to signal that an |
| 1463 | operation is not implemented for the given type combination. */ |
| 1464 | |
| 1465 | static PyObject * |
| 1466 | NotImplemented_repr(PyObject *op) |
| 1467 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1468 | return PyUnicode_FromString("NotImplemented"); |
Neil Schemenauer | 5ed85ec | 2001-01-04 01:48:10 +0000 | [diff] [blame] | 1469 | } |
| 1470 | |
Benjamin Peterson | 18d7d7a | 2011-07-29 18:27:44 -0500 | [diff] [blame] | 1471 | static PyObject * |
Alexandre Vassalotti | c49477b | 2013-11-24 02:53:45 -0800 | [diff] [blame] | 1472 | NotImplemented_reduce(PyObject *op) |
| 1473 | { |
| 1474 | return PyUnicode_FromString("NotImplemented"); |
| 1475 | } |
| 1476 | |
| 1477 | static PyMethodDef notimplemented_methods[] = { |
| 1478 | {"__reduce__", (PyCFunction)NotImplemented_reduce, METH_NOARGS, NULL}, |
| 1479 | {NULL, NULL} |
| 1480 | }; |
| 1481 | |
| 1482 | static PyObject * |
Benjamin Peterson | 18d7d7a | 2011-07-29 18:27:44 -0500 | [diff] [blame] | 1483 | notimplemented_new(PyTypeObject *type, PyObject *args, PyObject *kwargs) |
| 1484 | { |
| 1485 | if (PyTuple_GET_SIZE(args) || (kwargs && PyDict_Size(kwargs))) { |
| 1486 | PyErr_SetString(PyExc_TypeError, "NotImplementedType takes no arguments"); |
| 1487 | return NULL; |
| 1488 | } |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1489 | Py_RETURN_NOTIMPLEMENTED; |
Benjamin Peterson | 18d7d7a | 2011-07-29 18:27:44 -0500 | [diff] [blame] | 1490 | } |
| 1491 | |
Armin Ronacher | 226b1db | 2012-10-06 14:28:58 +0200 | [diff] [blame] | 1492 | static void |
| 1493 | notimplemented_dealloc(PyObject* ignore) |
| 1494 | { |
| 1495 | /* This should never get called, but we also don't want to SEGV if |
| 1496 | * we accidentally decref NotImplemented out of existence. |
| 1497 | */ |
| 1498 | Py_FatalError("deallocating NotImplemented"); |
| 1499 | } |
| 1500 | |
Alexandre Vassalotti | 65846c6 | 2013-11-30 17:55:48 -0800 | [diff] [blame] | 1501 | PyTypeObject _PyNotImplemented_Type = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1502 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 1503 | "NotImplementedType", |
| 1504 | 0, |
| 1505 | 0, |
Armin Ronacher | 226b1db | 2012-10-06 14:28:58 +0200 | [diff] [blame] | 1506 | notimplemented_dealloc, /*tp_dealloc*/ /*never called*/ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1507 | 0, /*tp_print*/ |
| 1508 | 0, /*tp_getattr*/ |
| 1509 | 0, /*tp_setattr*/ |
| 1510 | 0, /*tp_reserved*/ |
| 1511 | NotImplemented_repr, /*tp_repr*/ |
| 1512 | 0, /*tp_as_number*/ |
| 1513 | 0, /*tp_as_sequence*/ |
| 1514 | 0, /*tp_as_mapping*/ |
| 1515 | 0, /*tp_hash */ |
Benjamin Peterson | 18d7d7a | 2011-07-29 18:27:44 -0500 | [diff] [blame] | 1516 | 0, /*tp_call */ |
| 1517 | 0, /*tp_str */ |
| 1518 | 0, /*tp_getattro */ |
| 1519 | 0, /*tp_setattro */ |
| 1520 | 0, /*tp_as_buffer */ |
| 1521 | Py_TPFLAGS_DEFAULT, /*tp_flags */ |
| 1522 | 0, /*tp_doc */ |
| 1523 | 0, /*tp_traverse */ |
| 1524 | 0, /*tp_clear */ |
| 1525 | 0, /*tp_richcompare */ |
| 1526 | 0, /*tp_weaklistoffset */ |
| 1527 | 0, /*tp_iter */ |
| 1528 | 0, /*tp_iternext */ |
Alexandre Vassalotti | c49477b | 2013-11-24 02:53:45 -0800 | [diff] [blame] | 1529 | notimplemented_methods, /*tp_methods */ |
Benjamin Peterson | 18d7d7a | 2011-07-29 18:27:44 -0500 | [diff] [blame] | 1530 | 0, /*tp_members */ |
| 1531 | 0, /*tp_getset */ |
| 1532 | 0, /*tp_base */ |
| 1533 | 0, /*tp_dict */ |
| 1534 | 0, /*tp_descr_get */ |
| 1535 | 0, /*tp_descr_set */ |
| 1536 | 0, /*tp_dictoffset */ |
| 1537 | 0, /*tp_init */ |
| 1538 | 0, /*tp_alloc */ |
| 1539 | notimplemented_new, /*tp_new */ |
Neil Schemenauer | 5ed85ec | 2001-01-04 01:48:10 +0000 | [diff] [blame] | 1540 | }; |
| 1541 | |
| 1542 | PyObject _Py_NotImplementedStruct = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1543 | _PyObject_EXTRA_INIT |
Alexandre Vassalotti | 65846c6 | 2013-11-30 17:55:48 -0800 | [diff] [blame] | 1544 | 1, &_PyNotImplemented_Type |
Neil Schemenauer | 5ed85ec | 2001-01-04 01:48:10 +0000 | [diff] [blame] | 1545 | }; |
| 1546 | |
Guido van Rossum | ba21a49 | 2001-08-16 08:17:26 +0000 | [diff] [blame] | 1547 | void |
| 1548 | _Py_ReadyTypes(void) |
| 1549 | { |
Victor Stinner | 5a1bb4e | 2014-06-02 14:10:59 +0200 | [diff] [blame] | 1550 | if (PyType_Ready(&PyBaseObject_Type) < 0) |
| 1551 | Py_FatalError("Can't initialize object type"); |
| 1552 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1553 | if (PyType_Ready(&PyType_Type) < 0) |
| 1554 | Py_FatalError("Can't initialize type type"); |
Guido van Rossum | ba21a49 | 2001-08-16 08:17:26 +0000 | [diff] [blame] | 1555 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1556 | if (PyType_Ready(&_PyWeakref_RefType) < 0) |
| 1557 | Py_FatalError("Can't initialize weakref type"); |
Fred Drake | 0a4dd39 | 2004-07-02 18:57:45 +0000 | [diff] [blame] | 1558 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1559 | if (PyType_Ready(&_PyWeakref_CallableProxyType) < 0) |
| 1560 | Py_FatalError("Can't initialize callable weakref proxy type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1561 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1562 | if (PyType_Ready(&_PyWeakref_ProxyType) < 0) |
| 1563 | Py_FatalError("Can't initialize weakref proxy type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1564 | |
Victor Stinner | 5a1bb4e | 2014-06-02 14:10:59 +0200 | [diff] [blame] | 1565 | if (PyType_Ready(&PyLong_Type) < 0) |
| 1566 | Py_FatalError("Can't initialize int type"); |
| 1567 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1568 | if (PyType_Ready(&PyBool_Type) < 0) |
| 1569 | Py_FatalError("Can't initialize bool type"); |
Guido van Rossum | 77f6a65 | 2002-04-03 22:41:51 +0000 | [diff] [blame] | 1570 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1571 | if (PyType_Ready(&PyByteArray_Type) < 0) |
| 1572 | Py_FatalError("Can't initialize bytearray type"); |
Guido van Rossum | 4dfe8a1 | 2006-04-22 23:28:04 +0000 | [diff] [blame] | 1573 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1574 | if (PyType_Ready(&PyBytes_Type) < 0) |
| 1575 | Py_FatalError("Can't initialize 'str'"); |
Guido van Rossum | cacfc07 | 2002-05-24 19:01:59 +0000 | [diff] [blame] | 1576 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1577 | if (PyType_Ready(&PyList_Type) < 0) |
| 1578 | Py_FatalError("Can't initialize list type"); |
Guido van Rossum | ba21a49 | 2001-08-16 08:17:26 +0000 | [diff] [blame] | 1579 | |
Alexandre Vassalotti | 65846c6 | 2013-11-30 17:55:48 -0800 | [diff] [blame] | 1580 | if (PyType_Ready(&_PyNone_Type) < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1581 | Py_FatalError("Can't initialize None type"); |
Guido van Rossum | ba21a49 | 2001-08-16 08:17:26 +0000 | [diff] [blame] | 1582 | |
Alexandre Vassalotti | 65846c6 | 2013-11-30 17:55:48 -0800 | [diff] [blame] | 1583 | if (PyType_Ready(&_PyNotImplemented_Type) < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1584 | Py_FatalError("Can't initialize NotImplemented type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1585 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1586 | if (PyType_Ready(&PyTraceBack_Type) < 0) |
| 1587 | Py_FatalError("Can't initialize traceback type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1588 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1589 | if (PyType_Ready(&PySuper_Type) < 0) |
| 1590 | Py_FatalError("Can't initialize super type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1591 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1592 | if (PyType_Ready(&PyRange_Type) < 0) |
| 1593 | Py_FatalError("Can't initialize range type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1594 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1595 | if (PyType_Ready(&PyDict_Type) < 0) |
| 1596 | Py_FatalError("Can't initialize dict type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1597 | |
Eric Snow | 96c6af9 | 2015-05-29 22:21:39 -0600 | [diff] [blame] | 1598 | if (PyType_Ready(&PyODict_Type) < 0) |
| 1599 | Py_FatalError("Can't initialize OrderedDict type"); |
| 1600 | |
| 1601 | if (PyType_Ready(&PyODictKeys_Type) < 0) |
| 1602 | Py_FatalError("Can't initialize odict_keys type"); |
| 1603 | |
| 1604 | if (PyType_Ready(&PyODictItems_Type) < 0) |
| 1605 | Py_FatalError("Can't initialize odict_items type"); |
| 1606 | |
| 1607 | if (PyType_Ready(&PyODictValues_Type) < 0) |
| 1608 | Py_FatalError("Can't initialize odict_values type"); |
| 1609 | |
| 1610 | if (PyType_Ready(&PyODictIter_Type) < 0) |
| 1611 | Py_FatalError("Can't initialize odict_keyiterator type"); |
| 1612 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1613 | if (PyType_Ready(&PySet_Type) < 0) |
| 1614 | Py_FatalError("Can't initialize set type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1615 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1616 | if (PyType_Ready(&PyUnicode_Type) < 0) |
| 1617 | Py_FatalError("Can't initialize str type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1618 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1619 | if (PyType_Ready(&PySlice_Type) < 0) |
| 1620 | Py_FatalError("Can't initialize slice type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1621 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1622 | if (PyType_Ready(&PyStaticMethod_Type) < 0) |
| 1623 | Py_FatalError("Can't initialize static method type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1624 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1625 | if (PyType_Ready(&PyComplex_Type) < 0) |
| 1626 | Py_FatalError("Can't initialize complex type"); |
Skip Montanaro | ba1e0f4 | 2009-10-18 14:25:35 +0000 | [diff] [blame] | 1627 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1628 | if (PyType_Ready(&PyFloat_Type) < 0) |
| 1629 | Py_FatalError("Can't initialize float type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1630 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1631 | if (PyType_Ready(&PyFrozenSet_Type) < 0) |
| 1632 | Py_FatalError("Can't initialize frozenset type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1633 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1634 | if (PyType_Ready(&PyProperty_Type) < 0) |
| 1635 | Py_FatalError("Can't initialize property type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1636 | |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 1637 | if (PyType_Ready(&_PyManagedBuffer_Type) < 0) |
| 1638 | Py_FatalError("Can't initialize managed buffer type"); |
| 1639 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1640 | if (PyType_Ready(&PyMemoryView_Type) < 0) |
| 1641 | Py_FatalError("Can't initialize memoryview type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1642 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1643 | if (PyType_Ready(&PyTuple_Type) < 0) |
| 1644 | Py_FatalError("Can't initialize tuple type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1645 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1646 | if (PyType_Ready(&PyEnum_Type) < 0) |
| 1647 | Py_FatalError("Can't initialize enumerate type"); |
Benjamin Peterson | ae937c0 | 2009-04-18 20:54:08 +0000 | [diff] [blame] | 1648 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1649 | if (PyType_Ready(&PyReversed_Type) < 0) |
| 1650 | Py_FatalError("Can't initialize reversed type"); |
Guido van Rossum | 47b9ff6 | 2006-08-24 00:41:19 +0000 | [diff] [blame] | 1651 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1652 | if (PyType_Ready(&PyStdPrinter_Type) < 0) |
| 1653 | Py_FatalError("Can't initialize StdPrinter"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1654 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1655 | if (PyType_Ready(&PyCode_Type) < 0) |
| 1656 | Py_FatalError("Can't initialize code type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1657 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1658 | if (PyType_Ready(&PyFrame_Type) < 0) |
| 1659 | Py_FatalError("Can't initialize frame type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1660 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1661 | if (PyType_Ready(&PyCFunction_Type) < 0) |
| 1662 | Py_FatalError("Can't initialize builtin function type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1663 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1664 | if (PyType_Ready(&PyMethod_Type) < 0) |
| 1665 | Py_FatalError("Can't initialize method type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1666 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1667 | if (PyType_Ready(&PyFunction_Type) < 0) |
| 1668 | Py_FatalError("Can't initialize function type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1669 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1670 | if (PyType_Ready(&PyDictProxy_Type) < 0) |
| 1671 | Py_FatalError("Can't initialize dict proxy type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1672 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1673 | if (PyType_Ready(&PyGen_Type) < 0) |
| 1674 | Py_FatalError("Can't initialize generator type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1675 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1676 | if (PyType_Ready(&PyGetSetDescr_Type) < 0) |
| 1677 | Py_FatalError("Can't initialize get-set descriptor type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1678 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1679 | if (PyType_Ready(&PyWrapperDescr_Type) < 0) |
| 1680 | Py_FatalError("Can't initialize wrapper type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1681 | |
Benjamin Peterson | eff61f6 | 2011-09-01 16:32:31 -0400 | [diff] [blame] | 1682 | if (PyType_Ready(&_PyMethodWrapper_Type) < 0) |
| 1683 | Py_FatalError("Can't initialize method wrapper type"); |
| 1684 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1685 | if (PyType_Ready(&PyEllipsis_Type) < 0) |
| 1686 | Py_FatalError("Can't initialize ellipsis type"); |
Benjamin Peterson | fd838e6 | 2009-04-20 02:09:13 +0000 | [diff] [blame] | 1687 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1688 | if (PyType_Ready(&PyMemberDescr_Type) < 0) |
| 1689 | Py_FatalError("Can't initialize member descriptor type"); |
Benjamin Peterson | 8bc5b68 | 2009-05-09 18:10:51 +0000 | [diff] [blame] | 1690 | |
Barry Warsaw | 409da15 | 2012-06-03 16:18:47 -0400 | [diff] [blame] | 1691 | if (PyType_Ready(&_PyNamespace_Type) < 0) |
| 1692 | Py_FatalError("Can't initialize namespace type"); |
Benjamin Peterson | e8ea97f | 2012-10-30 23:27:52 -0400 | [diff] [blame] | 1693 | |
Benjamin Peterson | c431128 | 2012-10-30 23:21:10 -0400 | [diff] [blame] | 1694 | if (PyType_Ready(&PyCapsule_Type) < 0) |
| 1695 | Py_FatalError("Can't initialize capsule type"); |
| 1696 | |
| 1697 | if (PyType_Ready(&PyLongRangeIter_Type) < 0) |
| 1698 | Py_FatalError("Can't initialize long range iterator type"); |
| 1699 | |
| 1700 | if (PyType_Ready(&PyCell_Type) < 0) |
| 1701 | Py_FatalError("Can't initialize cell type"); |
| 1702 | |
| 1703 | if (PyType_Ready(&PyInstanceMethod_Type) < 0) |
| 1704 | Py_FatalError("Can't initialize instance method type"); |
| 1705 | |
| 1706 | if (PyType_Ready(&PyClassMethodDescr_Type) < 0) |
| 1707 | Py_FatalError("Can't initialize class method descr type"); |
| 1708 | |
| 1709 | if (PyType_Ready(&PyMethodDescr_Type) < 0) |
| 1710 | Py_FatalError("Can't initialize method descr type"); |
| 1711 | |
| 1712 | if (PyType_Ready(&PyCallIter_Type) < 0) |
| 1713 | Py_FatalError("Can't initialize call iter type"); |
| 1714 | |
| 1715 | if (PyType_Ready(&PySeqIter_Type) < 0) |
| 1716 | Py_FatalError("Can't initialize sequence iterator type"); |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 1717 | |
| 1718 | if (PyType_Ready(&PyCoro_Type) < 0) |
| 1719 | Py_FatalError("Can't initialize coroutine type"); |
| 1720 | |
| 1721 | if (PyType_Ready(&_PyCoroWrapper_Type) < 0) |
| 1722 | Py_FatalError("Can't initialize coroutine wrapper type"); |
Guido van Rossum | ba21a49 | 2001-08-16 08:17:26 +0000 | [diff] [blame] | 1723 | } |
| 1724 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1725 | |
Guido van Rossum | 84a9032 | 1996-05-22 16:34:47 +0000 | [diff] [blame] | 1726 | #ifdef Py_TRACE_REFS |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1727 | |
Guido van Rossum | aacdc9d | 1996-08-12 21:32:12 +0000 | [diff] [blame] | 1728 | void |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1729 | _Py_NewReference(PyObject *op) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1730 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1731 | _Py_INC_REFTOTAL; |
| 1732 | op->ob_refcnt = 1; |
| 1733 | _Py_AddToAllObjects(op, 1); |
| 1734 | _Py_INC_TPALLOCS(op); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1735 | } |
| 1736 | |
Guido van Rossum | aacdc9d | 1996-08-12 21:32:12 +0000 | [diff] [blame] | 1737 | void |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 1738 | _Py_ForgetReference(PyObject *op) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1739 | { |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 1740 | #ifdef SLOW_UNREF_CHECK |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 1741 | PyObject *p; |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 1742 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1743 | if (op->ob_refcnt < 0) |
| 1744 | Py_FatalError("UNREF negative refcnt"); |
| 1745 | if (op == &refchain || |
| 1746 | op->_ob_prev->_ob_next != op || op->_ob_next->_ob_prev != op) { |
| 1747 | fprintf(stderr, "* ob\n"); |
| 1748 | _PyObject_Dump(op); |
| 1749 | fprintf(stderr, "* op->_ob_prev->_ob_next\n"); |
| 1750 | _PyObject_Dump(op->_ob_prev->_ob_next); |
| 1751 | fprintf(stderr, "* op->_ob_next->_ob_prev\n"); |
| 1752 | _PyObject_Dump(op->_ob_next->_ob_prev); |
| 1753 | Py_FatalError("UNREF invalid object"); |
| 1754 | } |
Guido van Rossum | 2e8f614 | 1992-09-03 20:32:55 +0000 | [diff] [blame] | 1755 | #ifdef SLOW_UNREF_CHECK |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1756 | for (p = refchain._ob_next; p != &refchain; p = p->_ob_next) { |
| 1757 | if (p == op) |
| 1758 | break; |
| 1759 | } |
| 1760 | if (p == &refchain) /* Not found */ |
| 1761 | Py_FatalError("UNREF unknown object"); |
Guido van Rossum | 2e8f614 | 1992-09-03 20:32:55 +0000 | [diff] [blame] | 1762 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1763 | op->_ob_next->_ob_prev = op->_ob_prev; |
| 1764 | op->_ob_prev->_ob_next = op->_ob_next; |
| 1765 | op->_ob_next = op->_ob_prev = NULL; |
| 1766 | _Py_INC_TPFREES(op); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1767 | } |
| 1768 | |
Guido van Rossum | aacdc9d | 1996-08-12 21:32:12 +0000 | [diff] [blame] | 1769 | void |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1770 | _Py_Dealloc(PyObject *op) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1771 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1772 | destructor dealloc = Py_TYPE(op)->tp_dealloc; |
| 1773 | _Py_ForgetReference(op); |
| 1774 | (*dealloc)(op); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1775 | } |
| 1776 | |
Tim Peters | 269b2a6 | 2003-04-17 19:52:29 +0000 | [diff] [blame] | 1777 | /* Print all live objects. Because PyObject_Print is called, the |
| 1778 | * interpreter must be in a healthy state. |
| 1779 | */ |
Guido van Rossum | aacdc9d | 1996-08-12 21:32:12 +0000 | [diff] [blame] | 1780 | void |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1781 | _Py_PrintReferences(FILE *fp) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1782 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1783 | PyObject *op; |
| 1784 | fprintf(fp, "Remaining objects:\n"); |
| 1785 | for (op = refchain._ob_next; op != &refchain; op = op->_ob_next) { |
| 1786 | fprintf(fp, "%p [%" PY_FORMAT_SIZE_T "d] ", op, op->ob_refcnt); |
| 1787 | if (PyObject_Print(op, fp, 0) != 0) |
| 1788 | PyErr_Clear(); |
| 1789 | putc('\n', fp); |
| 1790 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1791 | } |
| 1792 | |
Tim Peters | 269b2a6 | 2003-04-17 19:52:29 +0000 | [diff] [blame] | 1793 | /* Print the addresses of all live objects. Unlike _Py_PrintReferences, this |
| 1794 | * doesn't make any calls to the Python C API, so is always safe to call. |
| 1795 | */ |
| 1796 | void |
| 1797 | _Py_PrintReferenceAddresses(FILE *fp) |
| 1798 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1799 | PyObject *op; |
| 1800 | fprintf(fp, "Remaining object addresses:\n"); |
| 1801 | for (op = refchain._ob_next; op != &refchain; op = op->_ob_next) |
| 1802 | fprintf(fp, "%p [%" PY_FORMAT_SIZE_T "d] %s\n", op, |
| 1803 | op->ob_refcnt, Py_TYPE(op)->tp_name); |
Tim Peters | 269b2a6 | 2003-04-17 19:52:29 +0000 | [diff] [blame] | 1804 | } |
| 1805 | |
Sjoerd Mullender | 6ec3c65 | 1995-08-29 09:18:14 +0000 | [diff] [blame] | 1806 | PyObject * |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1807 | _Py_GetObjects(PyObject *self, PyObject *args) |
Sjoerd Mullender | 6ec3c65 | 1995-08-29 09:18:14 +0000 | [diff] [blame] | 1808 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1809 | int i, n; |
| 1810 | PyObject *t = NULL; |
| 1811 | PyObject *res, *op; |
Sjoerd Mullender | 6ec3c65 | 1995-08-29 09:18:14 +0000 | [diff] [blame] | 1812 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1813 | if (!PyArg_ParseTuple(args, "i|O", &n, &t)) |
| 1814 | return NULL; |
| 1815 | op = refchain._ob_next; |
| 1816 | res = PyList_New(0); |
| 1817 | if (res == NULL) |
| 1818 | return NULL; |
| 1819 | for (i = 0; (n == 0 || i < n) && op != &refchain; i++) { |
| 1820 | while (op == self || op == args || op == res || op == t || |
| 1821 | (t != NULL && Py_TYPE(op) != (PyTypeObject *) t)) { |
| 1822 | op = op->_ob_next; |
| 1823 | if (op == &refchain) |
| 1824 | return res; |
| 1825 | } |
| 1826 | if (PyList_Append(res, op) < 0) { |
| 1827 | Py_DECREF(res); |
| 1828 | return NULL; |
| 1829 | } |
| 1830 | op = op->_ob_next; |
| 1831 | } |
| 1832 | return res; |
Sjoerd Mullender | 6ec3c65 | 1995-08-29 09:18:14 +0000 | [diff] [blame] | 1833 | } |
| 1834 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1835 | #endif |
Guido van Rossum | 97ead3f | 1996-01-12 01:24:09 +0000 | [diff] [blame] | 1836 | |
Benjamin Peterson | b173f78 | 2009-05-05 22:31:58 +0000 | [diff] [blame] | 1837 | |
Guido van Rossum | 84a9032 | 1996-05-22 16:34:47 +0000 | [diff] [blame] | 1838 | /* Hack to force loading of abstract.o */ |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1839 | Py_ssize_t (*_Py_abstract_hack)(PyObject *) = PyObject_Size; |
Guido van Rossum | e09fb55 | 1997-08-05 02:04:34 +0000 | [diff] [blame] | 1840 | |
| 1841 | |
David Malcolm | 49526f4 | 2012-06-22 14:55:41 -0400 | [diff] [blame] | 1842 | void |
| 1843 | _PyObject_DebugTypeStats(FILE *out) |
| 1844 | { |
| 1845 | _PyCFunction_DebugMallocStats(out); |
| 1846 | _PyDict_DebugMallocStats(out); |
| 1847 | _PyFloat_DebugMallocStats(out); |
| 1848 | _PyFrame_DebugMallocStats(out); |
| 1849 | _PyList_DebugMallocStats(out); |
| 1850 | _PyMethod_DebugMallocStats(out); |
David Malcolm | 49526f4 | 2012-06-22 14:55:41 -0400 | [diff] [blame] | 1851 | _PyTuple_DebugMallocStats(out); |
| 1852 | } |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 1853 | |
Guido van Rossum | 8661036 | 1998-04-10 22:32:46 +0000 | [diff] [blame] | 1854 | /* These methods are used to control infinite recursion in repr, str, print, |
| 1855 | etc. Container objects that may recursively contain themselves, |
| 1856 | e.g. builtin dictionaries and lists, should used Py_ReprEnter() and |
| 1857 | Py_ReprLeave() to avoid infinite recursion. |
| 1858 | |
| 1859 | Py_ReprEnter() returns 0 the first time it is called for a particular |
| 1860 | object and 1 every time thereafter. It returns -1 if an exception |
| 1861 | occurred. Py_ReprLeave() has no return value. |
| 1862 | |
| 1863 | See dictobject.c and listobject.c for examples of use. |
| 1864 | */ |
| 1865 | |
Guido van Rossum | 8661036 | 1998-04-10 22:32:46 +0000 | [diff] [blame] | 1866 | int |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1867 | Py_ReprEnter(PyObject *obj) |
Guido van Rossum | 8661036 | 1998-04-10 22:32:46 +0000 | [diff] [blame] | 1868 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1869 | PyObject *dict; |
| 1870 | PyObject *list; |
| 1871 | Py_ssize_t i; |
Guido van Rossum | 8661036 | 1998-04-10 22:32:46 +0000 | [diff] [blame] | 1872 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1873 | dict = PyThreadState_GetDict(); |
Antoine Pitrou | 04d17d3 | 2014-03-31 22:04:38 +0200 | [diff] [blame] | 1874 | /* Ignore a missing thread-state, so that this function can be called |
| 1875 | early on startup. */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1876 | if (dict == NULL) |
| 1877 | return 0; |
Victor Stinner | 7a07e45 | 2013-11-06 18:57:29 +0100 | [diff] [blame] | 1878 | list = _PyDict_GetItemId(dict, &PyId_Py_Repr); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1879 | if (list == NULL) { |
| 1880 | list = PyList_New(0); |
| 1881 | if (list == NULL) |
| 1882 | return -1; |
Victor Stinner | 7a07e45 | 2013-11-06 18:57:29 +0100 | [diff] [blame] | 1883 | if (_PyDict_SetItemId(dict, &PyId_Py_Repr, list) < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1884 | return -1; |
| 1885 | Py_DECREF(list); |
| 1886 | } |
| 1887 | i = PyList_GET_SIZE(list); |
| 1888 | while (--i >= 0) { |
| 1889 | if (PyList_GET_ITEM(list, i) == obj) |
| 1890 | return 1; |
| 1891 | } |
Victor Stinner | e901d1f | 2013-07-17 21:58:41 +0200 | [diff] [blame] | 1892 | if (PyList_Append(list, obj) < 0) |
| 1893 | return -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1894 | return 0; |
Guido van Rossum | 8661036 | 1998-04-10 22:32:46 +0000 | [diff] [blame] | 1895 | } |
| 1896 | |
| 1897 | void |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1898 | Py_ReprLeave(PyObject *obj) |
Guido van Rossum | 8661036 | 1998-04-10 22:32:46 +0000 | [diff] [blame] | 1899 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1900 | PyObject *dict; |
| 1901 | PyObject *list; |
| 1902 | Py_ssize_t i; |
Victor Stinner | 1b63493 | 2013-07-16 22:24:44 +0200 | [diff] [blame] | 1903 | PyObject *error_type, *error_value, *error_traceback; |
| 1904 | |
| 1905 | PyErr_Fetch(&error_type, &error_value, &error_traceback); |
Guido van Rossum | 8661036 | 1998-04-10 22:32:46 +0000 | [diff] [blame] | 1906 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1907 | dict = PyThreadState_GetDict(); |
| 1908 | if (dict == NULL) |
Victor Stinner | 1b63493 | 2013-07-16 22:24:44 +0200 | [diff] [blame] | 1909 | goto finally; |
| 1910 | |
Victor Stinner | 7a07e45 | 2013-11-06 18:57:29 +0100 | [diff] [blame] | 1911 | list = _PyDict_GetItemId(dict, &PyId_Py_Repr); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1912 | if (list == NULL || !PyList_Check(list)) |
Victor Stinner | 1b63493 | 2013-07-16 22:24:44 +0200 | [diff] [blame] | 1913 | goto finally; |
| 1914 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1915 | i = PyList_GET_SIZE(list); |
| 1916 | /* Count backwards because we always expect obj to be list[-1] */ |
| 1917 | while (--i >= 0) { |
| 1918 | if (PyList_GET_ITEM(list, i) == obj) { |
| 1919 | PyList_SetSlice(list, i, i + 1, NULL); |
| 1920 | break; |
| 1921 | } |
| 1922 | } |
Victor Stinner | 1b63493 | 2013-07-16 22:24:44 +0200 | [diff] [blame] | 1923 | |
| 1924 | finally: |
| 1925 | /* ignore exceptions because there is no way to report them. */ |
| 1926 | PyErr_Restore(error_type, error_value, error_traceback); |
Guido van Rossum | 8661036 | 1998-04-10 22:32:46 +0000 | [diff] [blame] | 1927 | } |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1928 | |
Tim Peters | 803526b | 2002-07-07 05:13:56 +0000 | [diff] [blame] | 1929 | /* Trashcan support. */ |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1930 | |
Tim Peters | 803526b | 2002-07-07 05:13:56 +0000 | [diff] [blame] | 1931 | /* Current call-stack depth of tp_dealloc calls. */ |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1932 | int _PyTrash_delete_nesting = 0; |
Guido van Rossum | e92e610 | 2000-04-24 15:40:53 +0000 | [diff] [blame] | 1933 | |
Tim Peters | 803526b | 2002-07-07 05:13:56 +0000 | [diff] [blame] | 1934 | /* List of objects that still need to be cleaned up, singly linked via their |
| 1935 | * gc headers' gc_prev pointers. |
| 1936 | */ |
| 1937 | PyObject *_PyTrash_delete_later = NULL; |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1938 | |
Tim Peters | 803526b | 2002-07-07 05:13:56 +0000 | [diff] [blame] | 1939 | /* Add op to the _PyTrash_delete_later list. Called when the current |
| 1940 | * call-stack depth gets large. op must be a currently untracked gc'ed |
| 1941 | * object, with refcount 0. Py_DECREF must already have been called on it. |
| 1942 | */ |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1943 | void |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1944 | _PyTrash_deposit_object(PyObject *op) |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1945 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1946 | assert(PyObject_IS_GC(op)); |
Antoine Pitrou | 796564c | 2013-07-30 19:59:21 +0200 | [diff] [blame] | 1947 | assert(_PyGC_REFS(op) == _PyGC_REFS_UNTRACKED); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1948 | assert(op->ob_refcnt == 0); |
| 1949 | _Py_AS_GC(op)->gc.gc_prev = (PyGC_Head *)_PyTrash_delete_later; |
| 1950 | _PyTrash_delete_later = op; |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1951 | } |
| 1952 | |
Antoine Pitrou | 2b0218a | 2012-09-06 00:59:49 +0200 | [diff] [blame] | 1953 | /* The equivalent API, using per-thread state recursion info */ |
| 1954 | void |
| 1955 | _PyTrash_thread_deposit_object(PyObject *op) |
| 1956 | { |
| 1957 | PyThreadState *tstate = PyThreadState_GET(); |
| 1958 | assert(PyObject_IS_GC(op)); |
Antoine Pitrou | 796564c | 2013-07-30 19:59:21 +0200 | [diff] [blame] | 1959 | assert(_PyGC_REFS(op) == _PyGC_REFS_UNTRACKED); |
Antoine Pitrou | 2b0218a | 2012-09-06 00:59:49 +0200 | [diff] [blame] | 1960 | assert(op->ob_refcnt == 0); |
| 1961 | _Py_AS_GC(op)->gc.gc_prev = (PyGC_Head *) tstate->trash_delete_later; |
| 1962 | tstate->trash_delete_later = op; |
| 1963 | } |
| 1964 | |
Tim Peters | 803526b | 2002-07-07 05:13:56 +0000 | [diff] [blame] | 1965 | /* Dealloccate all the objects in the _PyTrash_delete_later list. Called when |
| 1966 | * the call-stack unwinds again. |
| 1967 | */ |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1968 | void |
Fred Drake | 100814d | 2000-07-09 15:48:49 +0000 | [diff] [blame] | 1969 | _PyTrash_destroy_chain(void) |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1970 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1971 | while (_PyTrash_delete_later) { |
| 1972 | PyObject *op = _PyTrash_delete_later; |
| 1973 | destructor dealloc = Py_TYPE(op)->tp_dealloc; |
Neil Schemenauer | f589c05 | 2002-03-29 03:05:54 +0000 | [diff] [blame] | 1974 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1975 | _PyTrash_delete_later = |
| 1976 | (PyObject*) _Py_AS_GC(op)->gc.gc_prev; |
Neil Schemenauer | f589c05 | 2002-03-29 03:05:54 +0000 | [diff] [blame] | 1977 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1978 | /* Call the deallocator directly. This used to try to |
| 1979 | * fool Py_DECREF into calling it indirectly, but |
| 1980 | * Py_DECREF was already called on this object, and in |
| 1981 | * assorted non-release builds calling Py_DECREF again ends |
| 1982 | * up distorting allocation statistics. |
| 1983 | */ |
| 1984 | assert(op->ob_refcnt == 0); |
| 1985 | ++_PyTrash_delete_nesting; |
| 1986 | (*dealloc)(op); |
| 1987 | --_PyTrash_delete_nesting; |
| 1988 | } |
Guido van Rossum | d724b23 | 2000-03-13 16:01:29 +0000 | [diff] [blame] | 1989 | } |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1990 | |
Antoine Pitrou | 2b0218a | 2012-09-06 00:59:49 +0200 | [diff] [blame] | 1991 | /* The equivalent API, using per-thread state recursion info */ |
| 1992 | void |
| 1993 | _PyTrash_thread_destroy_chain(void) |
| 1994 | { |
| 1995 | PyThreadState *tstate = PyThreadState_GET(); |
| 1996 | while (tstate->trash_delete_later) { |
| 1997 | PyObject *op = tstate->trash_delete_later; |
| 1998 | destructor dealloc = Py_TYPE(op)->tp_dealloc; |
| 1999 | |
| 2000 | tstate->trash_delete_later = |
| 2001 | (PyObject*) _Py_AS_GC(op)->gc.gc_prev; |
| 2002 | |
| 2003 | /* Call the deallocator directly. This used to try to |
| 2004 | * fool Py_DECREF into calling it indirectly, but |
| 2005 | * Py_DECREF was already called on this object, and in |
| 2006 | * assorted non-release builds calling Py_DECREF again ends |
| 2007 | * up distorting allocation statistics. |
| 2008 | */ |
| 2009 | assert(op->ob_refcnt == 0); |
| 2010 | ++tstate->trash_delete_nesting; |
| 2011 | (*dealloc)(op); |
| 2012 | --tstate->trash_delete_nesting; |
| 2013 | } |
| 2014 | } |
| 2015 | |
Martin v. Löwis | 4d0d471 | 2010-12-03 20:14:31 +0000 | [diff] [blame] | 2016 | #ifndef Py_TRACE_REFS |
| 2017 | /* For Py_LIMITED_API, we need an out-of-line version of _Py_Dealloc. |
| 2018 | Define this here, so we can undefine the macro. */ |
| 2019 | #undef _Py_Dealloc |
| 2020 | PyAPI_FUNC(void) _Py_Dealloc(PyObject *); |
| 2021 | void |
| 2022 | _Py_Dealloc(PyObject *op) |
| 2023 | { |
| 2024 | _Py_INC_TPFREES(op) _Py_COUNT_ALLOCS_COMMA |
| 2025 | (*Py_TYPE(op)->tp_dealloc)(op); |
| 2026 | } |
| 2027 | #endif |
| 2028 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2029 | #ifdef __cplusplus |
| 2030 | } |
| 2031 | #endif |