Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1 | /* Abstract Object Interface (many thanks to Jim Fulton) */ |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 3 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 4 | #include "Python.h" |
Guido van Rossum | fa0b6ab | 1998-05-22 15:23:36 +0000 | [diff] [blame] | 5 | #include <ctype.h> |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 6 | #include "structmember.h" /* we need the offsetof() macro from there */ |
Tim Peters | 64b5ce3 | 2001-09-10 20:52:51 +0000 | [diff] [blame] | 7 | #include "longintrepr.h" |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 8 | |
| 9 | #define NEW_STYLE_NUMBER(o) PyType_HasFeature((o)->ob_type, \ |
Guido van Rossum | c318969 | 2001-01-17 15:29:42 +0000 | [diff] [blame] | 10 | Py_TPFLAGS_CHECKTYPES) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 11 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 12 | /* Shorthands to return certain errors */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 13 | |
| 14 | static PyObject * |
Fred Drake | 4201b9e | 2000-07-09 04:34:13 +0000 | [diff] [blame] | 15 | type_error(const char *msg) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 16 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 17 | PyErr_SetString(PyExc_TypeError, msg); |
| 18 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 19 | } |
| 20 | |
Guido van Rossum | 052b7e1 | 1996-11-11 15:08:19 +0000 | [diff] [blame] | 21 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 22 | null_error(void) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 23 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 24 | if (!PyErr_Occurred()) |
| 25 | PyErr_SetString(PyExc_SystemError, |
| 26 | "null argument to internal routine"); |
| 27 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 28 | } |
| 29 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 30 | /* Operations on any object */ |
| 31 | |
| 32 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 33 | PyObject_Cmp(PyObject *o1, PyObject *o2, int *result) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 34 | { |
| 35 | int r; |
| 36 | |
| 37 | if (o1 == NULL || o2 == NULL) { |
| 38 | null_error(); |
| 39 | return -1; |
| 40 | } |
| 41 | r = PyObject_Compare(o1, o2); |
| 42 | if (PyErr_Occurred()) |
| 43 | return -1; |
| 44 | *result = r; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 45 | return 0; |
| 46 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 47 | |
| 48 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 49 | PyObject_Type(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 50 | { |
| 51 | PyObject *v; |
| 52 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 53 | if (o == NULL) |
| 54 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 55 | v = (PyObject *)o->ob_type; |
| 56 | Py_INCREF(v); |
| 57 | return v; |
| 58 | } |
| 59 | |
| 60 | int |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 61 | PyObject_Size(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 62 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 63 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 64 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 65 | if (o == NULL) { |
| 66 | null_error(); |
| 67 | return -1; |
| 68 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 69 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 70 | m = o->ob_type->tp_as_sequence; |
| 71 | if (m && m->sq_length) |
| 72 | return m->sq_length(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 73 | |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 74 | return PyMapping_Size(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 75 | } |
| 76 | |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 77 | #undef PyObject_Length |
| 78 | int |
| 79 | PyObject_Length(PyObject *o) |
| 80 | { |
| 81 | return PyObject_Size(o); |
| 82 | } |
| 83 | #define PyObject_Length PyObject_Size |
| 84 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 85 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 86 | PyObject_GetItem(PyObject *o, PyObject *key) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 87 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 88 | PyMappingMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 89 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 90 | if (o == NULL || key == NULL) |
| 91 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 92 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 93 | m = o->ob_type->tp_as_mapping; |
| 94 | if (m && m->mp_subscript) |
| 95 | return m->mp_subscript(o, key); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 96 | |
Guido van Rossum | 2130824 | 1998-08-13 16:44:44 +0000 | [diff] [blame] | 97 | if (o->ob_type->tp_as_sequence) { |
| 98 | if (PyInt_Check(key)) |
| 99 | return PySequence_GetItem(o, PyInt_AsLong(key)); |
Andrew M. Kuchling | 0f223d2 | 2000-02-23 22:21:50 +0000 | [diff] [blame] | 100 | else if (PyLong_Check(key)) { |
| 101 | long key_value = PyLong_AsLong(key); |
| 102 | if (key_value == -1 && PyErr_Occurred()) |
| 103 | return NULL; |
| 104 | return PySequence_GetItem(o, key_value); |
| 105 | } |
Guido van Rossum | 2130824 | 1998-08-13 16:44:44 +0000 | [diff] [blame] | 106 | return type_error("sequence index must be integer"); |
| 107 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 108 | |
| 109 | return type_error("unsubscriptable object"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 113 | PyObject_SetItem(PyObject *o, PyObject *key, PyObject *value) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 114 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 115 | PyMappingMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 116 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 117 | if (o == NULL || key == NULL || value == NULL) { |
| 118 | null_error(); |
| 119 | return -1; |
| 120 | } |
| 121 | m = o->ob_type->tp_as_mapping; |
| 122 | if (m && m->mp_ass_subscript) |
| 123 | return m->mp_ass_subscript(o, key, value); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 124 | |
Guido van Rossum | 2130824 | 1998-08-13 16:44:44 +0000 | [diff] [blame] | 125 | if (o->ob_type->tp_as_sequence) { |
| 126 | if (PyInt_Check(key)) |
| 127 | return PySequence_SetItem(o, PyInt_AsLong(key), value); |
Andrew M. Kuchling | 0f223d2 | 2000-02-23 22:21:50 +0000 | [diff] [blame] | 128 | else if (PyLong_Check(key)) { |
| 129 | long key_value = PyLong_AsLong(key); |
| 130 | if (key_value == -1 && PyErr_Occurred()) |
| 131 | return -1; |
| 132 | return PySequence_SetItem(o, key_value, value); |
| 133 | } |
Guido van Rossum | 2130824 | 1998-08-13 16:44:44 +0000 | [diff] [blame] | 134 | type_error("sequence index must be integer"); |
| 135 | return -1; |
| 136 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 137 | |
| 138 | type_error("object does not support item assignment"); |
| 139 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 140 | } |
| 141 | |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 142 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 143 | PyObject_DelItem(PyObject *o, PyObject *key) |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 144 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 145 | PyMappingMethods *m; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 146 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 147 | if (o == NULL || key == NULL) { |
| 148 | null_error(); |
| 149 | return -1; |
| 150 | } |
| 151 | m = o->ob_type->tp_as_mapping; |
| 152 | if (m && m->mp_ass_subscript) |
| 153 | return m->mp_ass_subscript(o, key, (PyObject*)NULL); |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 154 | |
Guido van Rossum | 2130824 | 1998-08-13 16:44:44 +0000 | [diff] [blame] | 155 | if (o->ob_type->tp_as_sequence) { |
| 156 | if (PyInt_Check(key)) |
| 157 | return PySequence_DelItem(o, PyInt_AsLong(key)); |
Andrew M. Kuchling | 0f223d2 | 2000-02-23 22:21:50 +0000 | [diff] [blame] | 158 | else if (PyLong_Check(key)) { |
| 159 | long key_value = PyLong_AsLong(key); |
| 160 | if (key_value == -1 && PyErr_Occurred()) |
| 161 | return -1; |
| 162 | return PySequence_DelItem(o, key_value); |
| 163 | } |
Guido van Rossum | 2130824 | 1998-08-13 16:44:44 +0000 | [diff] [blame] | 164 | type_error("sequence index must be integer"); |
| 165 | return -1; |
| 166 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 167 | |
| 168 | type_error("object does not support item deletion"); |
| 169 | return -1; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 170 | } |
| 171 | |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 172 | int PyObject_AsCharBuffer(PyObject *obj, |
| 173 | const char **buffer, |
| 174 | int *buffer_len) |
| 175 | { |
| 176 | PyBufferProcs *pb; |
| 177 | const char *pp; |
| 178 | int len; |
| 179 | |
| 180 | if (obj == NULL || buffer == NULL || buffer_len == NULL) { |
| 181 | null_error(); |
| 182 | return -1; |
| 183 | } |
| 184 | pb = obj->ob_type->tp_as_buffer; |
| 185 | if ( pb == NULL || |
| 186 | pb->bf_getcharbuffer == NULL || |
| 187 | pb->bf_getsegcount == NULL ) { |
| 188 | PyErr_SetString(PyExc_TypeError, |
| 189 | "expected a character buffer object"); |
| 190 | goto onError; |
| 191 | } |
| 192 | if ( (*pb->bf_getsegcount)(obj,NULL) != 1 ) { |
| 193 | PyErr_SetString(PyExc_TypeError, |
| 194 | "expected a single-segment buffer object"); |
| 195 | goto onError; |
| 196 | } |
| 197 | len = (*pb->bf_getcharbuffer)(obj,0,&pp); |
| 198 | if (len < 0) |
| 199 | goto onError; |
| 200 | *buffer = pp; |
| 201 | *buffer_len = len; |
| 202 | return 0; |
| 203 | |
| 204 | onError: |
| 205 | return -1; |
| 206 | } |
| 207 | |
| 208 | int PyObject_AsReadBuffer(PyObject *obj, |
| 209 | const void **buffer, |
| 210 | int *buffer_len) |
| 211 | { |
| 212 | PyBufferProcs *pb; |
| 213 | void *pp; |
| 214 | int len; |
| 215 | |
| 216 | if (obj == NULL || buffer == NULL || buffer_len == NULL) { |
| 217 | null_error(); |
| 218 | return -1; |
| 219 | } |
| 220 | pb = obj->ob_type->tp_as_buffer; |
| 221 | if ( pb == NULL || |
| 222 | pb->bf_getreadbuffer == NULL || |
| 223 | pb->bf_getsegcount == NULL ) { |
| 224 | PyErr_SetString(PyExc_TypeError, |
| 225 | "expected a readable buffer object"); |
| 226 | goto onError; |
| 227 | } |
| 228 | if ( (*pb->bf_getsegcount)(obj,NULL) != 1 ) { |
| 229 | PyErr_SetString(PyExc_TypeError, |
| 230 | "expected a single-segment buffer object"); |
| 231 | goto onError; |
| 232 | } |
| 233 | len = (*pb->bf_getreadbuffer)(obj,0,&pp); |
| 234 | if (len < 0) |
| 235 | goto onError; |
| 236 | *buffer = pp; |
| 237 | *buffer_len = len; |
| 238 | return 0; |
| 239 | |
| 240 | onError: |
| 241 | return -1; |
| 242 | } |
| 243 | |
| 244 | int PyObject_AsWriteBuffer(PyObject *obj, |
| 245 | void **buffer, |
| 246 | int *buffer_len) |
| 247 | { |
| 248 | PyBufferProcs *pb; |
| 249 | void*pp; |
| 250 | int len; |
| 251 | |
| 252 | if (obj == NULL || buffer == NULL || buffer_len == NULL) { |
| 253 | null_error(); |
| 254 | return -1; |
| 255 | } |
| 256 | pb = obj->ob_type->tp_as_buffer; |
| 257 | if ( pb == NULL || |
| 258 | pb->bf_getwritebuffer == NULL || |
| 259 | pb->bf_getsegcount == NULL ) { |
| 260 | PyErr_SetString(PyExc_TypeError, |
| 261 | "expected a writeable buffer object"); |
| 262 | goto onError; |
| 263 | } |
| 264 | if ( (*pb->bf_getsegcount)(obj,NULL) != 1 ) { |
| 265 | PyErr_SetString(PyExc_TypeError, |
| 266 | "expected a single-segment buffer object"); |
| 267 | goto onError; |
| 268 | } |
| 269 | len = (*pb->bf_getwritebuffer)(obj,0,&pp); |
| 270 | if (len < 0) |
| 271 | goto onError; |
| 272 | *buffer = pp; |
| 273 | *buffer_len = len; |
| 274 | return 0; |
| 275 | |
| 276 | onError: |
| 277 | return -1; |
| 278 | } |
| 279 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 280 | /* Operations on numbers */ |
| 281 | |
| 282 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 283 | PyNumber_Check(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 284 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 285 | return o && o->ob_type->tp_as_number; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 286 | } |
| 287 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 288 | /* Binary operators */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 289 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 290 | /* New style number protocol support */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 291 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 292 | #define NB_SLOT(x) offsetof(PyNumberMethods, x) |
| 293 | #define NB_BINOP(nb_methods, slot) \ |
| 294 | ((binaryfunc*)(& ((char*)nb_methods)[slot] )) |
| 295 | #define NB_TERNOP(nb_methods, slot) \ |
| 296 | ((ternaryfunc*)(& ((char*)nb_methods)[slot] )) |
| 297 | |
| 298 | /* |
| 299 | Calling scheme used for binary operations: |
| 300 | |
| 301 | v w Action |
| 302 | ------------------------------------------------------------------- |
Guido van Rossum | 4bb1e36 | 2001-09-28 23:49:48 +0000 | [diff] [blame^] | 303 | new new w.op(v,w)[*], v.op(v,w), w.op(v,w) |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 304 | new old v.op(v,w), coerce(v,w), v.op(v,w) |
| 305 | old new w.op(v,w), coerce(v,w), v.op(v,w) |
| 306 | old old coerce(v,w), v.op(v,w) |
| 307 | |
Guido van Rossum | 4bb1e36 | 2001-09-28 23:49:48 +0000 | [diff] [blame^] | 308 | [*] only when v->ob_type != w->ob_type && w->ob_type is a subclass of |
| 309 | v->ob_type |
| 310 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 311 | Legend: |
| 312 | ------- |
| 313 | * new == new style number |
| 314 | * old == old style number |
| 315 | * Action indicates the order in which operations are tried until either |
| 316 | a valid result is produced or an error occurs. |
| 317 | |
| 318 | */ |
| 319 | |
| 320 | static PyObject * |
| 321 | binary_op1(PyObject *v, PyObject *w, const int op_slot) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 322 | { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 323 | PyObject *x; |
Guido van Rossum | 4bb1e36 | 2001-09-28 23:49:48 +0000 | [diff] [blame^] | 324 | binaryfunc slotv = NULL; |
| 325 | binaryfunc slotw = NULL; |
| 326 | |
| 327 | if (v->ob_type->tp_as_number != NULL && NEW_STYLE_NUMBER(v)) |
| 328 | slotv = *NB_BINOP(v->ob_type->tp_as_number, op_slot); |
| 329 | if (w->ob_type != v->ob_type && |
| 330 | w->ob_type->tp_as_number != NULL && NEW_STYLE_NUMBER(w)) { |
| 331 | slotw = *NB_BINOP(w->ob_type->tp_as_number, op_slot); |
| 332 | if (slotw == slotv) |
| 333 | slotw = NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 334 | } |
Guido van Rossum | 4bb1e36 | 2001-09-28 23:49:48 +0000 | [diff] [blame^] | 335 | if (slotw && PyType_IsSubtype(w->ob_type, v->ob_type)) { |
| 336 | x = slotw(v, w); |
| 337 | if (x != Py_NotImplemented) |
| 338 | return x; |
| 339 | Py_DECREF(x); /* can't do it */ |
| 340 | slotw = NULL; |
| 341 | } |
| 342 | if (slotv) { |
| 343 | x = slotv(v, w); |
| 344 | if (x != Py_NotImplemented) |
| 345 | return x; |
| 346 | Py_DECREF(x); /* can't do it */ |
| 347 | } |
| 348 | if (slotw) { |
| 349 | x = slotw(v, w); |
| 350 | if (x != Py_NotImplemented) |
| 351 | return x; |
| 352 | Py_DECREF(x); /* can't do it */ |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 353 | } |
| 354 | if (!NEW_STYLE_NUMBER(v) || !NEW_STYLE_NUMBER(w)) { |
| 355 | int err = PyNumber_CoerceEx(&v, &w); |
| 356 | if (err < 0) { |
| 357 | return NULL; |
| 358 | } |
| 359 | if (err == 0) { |
| 360 | PyNumberMethods *mv = v->ob_type->tp_as_number; |
| 361 | if (mv) { |
Guido van Rossum | 4bb1e36 | 2001-09-28 23:49:48 +0000 | [diff] [blame^] | 362 | binaryfunc slot; |
| 363 | slot = *NB_BINOP(mv, op_slot); |
| 364 | if (slot) { |
| 365 | PyObject *x = slot(v, w); |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 366 | Py_DECREF(v); |
| 367 | Py_DECREF(w); |
| 368 | return x; |
| 369 | } |
| 370 | } |
| 371 | /* CoerceEx incremented the reference counts */ |
| 372 | Py_DECREF(v); |
| 373 | Py_DECREF(w); |
| 374 | } |
| 375 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 376 | Py_INCREF(Py_NotImplemented); |
| 377 | return Py_NotImplemented; |
| 378 | } |
| 379 | |
| 380 | static PyObject * |
| 381 | binary_op(PyObject *v, PyObject *w, const int op_slot, const char *op_name) |
| 382 | { |
| 383 | PyObject *result = binary_op1(v, w, op_slot); |
| 384 | if (result == Py_NotImplemented) { |
| 385 | Py_DECREF(Py_NotImplemented); |
| 386 | PyErr_Format(PyExc_TypeError, |
| 387 | "unsupported operand type(s) for %s", op_name); |
| 388 | return NULL; |
| 389 | } |
| 390 | return result; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 391 | } |
| 392 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 393 | |
| 394 | /* |
| 395 | Calling scheme used for ternary operations: |
| 396 | |
| 397 | v w z Action |
| 398 | ------------------------------------------------------------------- |
| 399 | new new new v.op(v,w,z), w.op(v,w,z), z.op(v,w,z) |
| 400 | new old new v.op(v,w,z), z.op(v,w,z), coerce(v,w,z), v.op(v,w,z) |
| 401 | old new new w.op(v,w,z), z.op(v,w,z), coerce(v,w,z), v.op(v,w,z) |
| 402 | old old new z.op(v,w,z), coerce(v,w,z), v.op(v,w,z) |
| 403 | new new old v.op(v,w,z), w.op(v,w,z), coerce(v,w,z), v.op(v,w,z) |
| 404 | new old old v.op(v,w,z), coerce(v,w,z), v.op(v,w,z) |
| 405 | old new old w.op(v,w,z), coerce(v,w,z), v.op(v,w,z) |
| 406 | old old old coerce(v,w,z), v.op(v,w,z) |
| 407 | |
| 408 | Legend: |
| 409 | ------- |
| 410 | * new == new style number |
| 411 | * old == old style number |
| 412 | * Action indicates the order in which operations are tried until either |
| 413 | a valid result is produced or an error occurs. |
| 414 | * coerce(v,w,z) actually does: coerce(v,w), coerce(v,z), coerce(w,z) and |
| 415 | only if z != Py_None; if z == Py_None, then it is treated as absent |
| 416 | variable and only coerce(v,w) is tried. |
| 417 | |
| 418 | */ |
| 419 | |
| 420 | static PyObject * |
| 421 | ternary_op(PyObject *v, |
| 422 | PyObject *w, |
| 423 | PyObject *z, |
| 424 | const int op_slot, |
| 425 | const char *op_name) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 426 | { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 427 | PyNumberMethods *mv, *mw, *mz; |
| 428 | register PyObject *x = NULL; |
| 429 | register ternaryfunc *slot; |
| 430 | |
| 431 | mv = v->ob_type->tp_as_number; |
Guido van Rossum | 4bb1e36 | 2001-09-28 23:49:48 +0000 | [diff] [blame^] | 432 | mw = w->ob_type->tp_as_number; |
| 433 | if (v->ob_type != w->ob_type && mw && NEW_STYLE_NUMBER(w)) { |
| 434 | slot = NB_TERNOP(mw, op_slot); |
| 435 | if (*slot && *slot != *NB_TERNOP(mv, op_slot) && |
| 436 | PyType_IsSubtype(w->ob_type, v->ob_type)) { |
| 437 | x = (*slot)(v, w, z); |
| 438 | if (x != Py_NotImplemented) |
| 439 | return x; |
| 440 | /* Can't do it... fall through */ |
| 441 | Py_DECREF(x); |
| 442 | } |
| 443 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 444 | if (mv != NULL && NEW_STYLE_NUMBER(v)) { |
| 445 | /* try v.op(v,w,z) */ |
| 446 | slot = NB_TERNOP(mv, op_slot); |
| 447 | if (*slot) { |
| 448 | x = (*slot)(v, w, z); |
| 449 | if (x != Py_NotImplemented) |
| 450 | return x; |
| 451 | /* Can't do it... fall through */ |
| 452 | Py_DECREF(x); |
| 453 | } |
| 454 | if (v->ob_type == w->ob_type && |
| 455 | (z == Py_None || z->ob_type == v->ob_type)) { |
| 456 | goto ternary_error; |
| 457 | } |
| 458 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 459 | if (mw != NULL && NEW_STYLE_NUMBER(w)) { |
| 460 | /* try w.op(v,w,z) */ |
| 461 | slot = NB_TERNOP(mw,op_slot); |
| 462 | if (*slot) { |
| 463 | x = (*slot)(v, w, z); |
| 464 | if (x != Py_NotImplemented) |
| 465 | return x; |
| 466 | /* Can't do it... fall through */ |
| 467 | Py_DECREF(x); |
| 468 | } |
| 469 | if (NEW_STYLE_NUMBER(v) && |
| 470 | (z == Py_None || z->ob_type == v->ob_type)) { |
| 471 | goto ternary_error; |
| 472 | } |
| 473 | } |
| 474 | mz = z->ob_type->tp_as_number; |
| 475 | if (mz != NULL && NEW_STYLE_NUMBER(z)) { |
| 476 | /* try: z.op(v,w,z) */ |
| 477 | slot = NB_TERNOP(mz, op_slot); |
| 478 | if (*slot) { |
| 479 | x = (*slot)(v, w, z); |
| 480 | if (x != Py_NotImplemented) |
| 481 | return x; |
| 482 | /* Can't do it... fall through */ |
| 483 | Py_DECREF(x); |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | if (!NEW_STYLE_NUMBER(v) || !NEW_STYLE_NUMBER(w) || |
| 488 | (z != Py_None && !NEW_STYLE_NUMBER(z))) { |
| 489 | /* we have an old style operand, coerce */ |
| 490 | PyObject *v1, *z1, *w2, *z2; |
| 491 | int c; |
| 492 | |
| 493 | c = PyNumber_Coerce(&v, &w); |
| 494 | if (c != 0) |
| 495 | goto error3; |
| 496 | |
| 497 | /* Special case: if the third argument is None, it is |
| 498 | treated as absent argument and not coerced. */ |
| 499 | if (z == Py_None) { |
| 500 | if (v->ob_type->tp_as_number) { |
| 501 | slot = NB_TERNOP(v->ob_type->tp_as_number, |
| 502 | op_slot); |
| 503 | if (*slot) |
| 504 | x = (*slot)(v, w, z); |
| 505 | else |
| 506 | c = -1; |
| 507 | } |
| 508 | else |
| 509 | c = -1; |
| 510 | goto error2; |
| 511 | } |
| 512 | v1 = v; |
| 513 | z1 = z; |
| 514 | c = PyNumber_Coerce(&v1, &z1); |
| 515 | if (c != 0) |
| 516 | goto error2; |
| 517 | w2 = w; |
| 518 | z2 = z1; |
| 519 | c = PyNumber_Coerce(&w2, &z2); |
| 520 | if (c != 0) |
| 521 | goto error1; |
| 522 | |
| 523 | if (v1->ob_type->tp_as_number != NULL) { |
| 524 | slot = NB_TERNOP(v1->ob_type->tp_as_number, |
| 525 | op_slot); |
| 526 | if (*slot) |
| 527 | x = (*slot)(v1, w2, z2); |
| 528 | else |
| 529 | c = -1; |
| 530 | } |
| 531 | else |
| 532 | c = -1; |
| 533 | |
| 534 | Py_DECREF(w2); |
| 535 | Py_DECREF(z2); |
| 536 | error1: |
| 537 | Py_DECREF(v1); |
| 538 | Py_DECREF(z1); |
| 539 | error2: |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 540 | Py_DECREF(v); |
| 541 | Py_DECREF(w); |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 542 | error3: |
| 543 | if (c >= 0) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 544 | return x; |
| 545 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 546 | |
| 547 | ternary_error: |
| 548 | PyErr_Format(PyExc_TypeError, "unsupported operand type(s) for %s", |
| 549 | op_name); |
| 550 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 551 | } |
| 552 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 553 | #define BINARY_FUNC(func, op, op_name) \ |
| 554 | PyObject * \ |
| 555 | func(PyObject *v, PyObject *w) { \ |
| 556 | return binary_op(v, w, NB_SLOT(op), op_name); \ |
| 557 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 558 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 559 | BINARY_FUNC(PyNumber_Or, nb_or, "|") |
| 560 | BINARY_FUNC(PyNumber_Xor, nb_xor, "^") |
| 561 | BINARY_FUNC(PyNumber_And, nb_and, "&") |
| 562 | BINARY_FUNC(PyNumber_Lshift, nb_lshift, "<<") |
| 563 | BINARY_FUNC(PyNumber_Rshift, nb_rshift, ">>") |
| 564 | BINARY_FUNC(PyNumber_Subtract, nb_subtract, "-") |
| 565 | BINARY_FUNC(PyNumber_Multiply, nb_multiply, "*") |
| 566 | BINARY_FUNC(PyNumber_Divide, nb_divide, "/") |
| 567 | BINARY_FUNC(PyNumber_Divmod, nb_divmod, "divmod()") |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 568 | |
| 569 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 570 | PyNumber_Add(PyObject *v, PyObject *w) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 571 | { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 572 | PyObject *result = binary_op1(v, w, NB_SLOT(nb_add)); |
| 573 | if (result == Py_NotImplemented) { |
| 574 | PySequenceMethods *m = v->ob_type->tp_as_sequence; |
| 575 | Py_DECREF(Py_NotImplemented); |
| 576 | if (m && m->sq_concat) { |
| 577 | result = (*m->sq_concat)(v, w); |
Andrew M. Kuchling | 1991ddc | 2000-02-14 22:22:04 +0000 | [diff] [blame] | 578 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 579 | else { |
| 580 | PyErr_SetString(PyExc_TypeError, |
| 581 | "unsupported operand types for +"); |
| 582 | result = NULL; |
| 583 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 584 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 585 | return result; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 586 | } |
| 587 | |
| 588 | PyObject * |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 589 | PyNumber_FloorDivide(PyObject *v, PyObject *w) |
| 590 | { |
| 591 | /* XXX tp_flags test */ |
| 592 | return binary_op(v, w, NB_SLOT(nb_floor_divide), "//"); |
| 593 | } |
| 594 | |
| 595 | PyObject * |
| 596 | PyNumber_TrueDivide(PyObject *v, PyObject *w) |
| 597 | { |
| 598 | /* XXX tp_flags test */ |
| 599 | return binary_op(v, w, NB_SLOT(nb_true_divide), "/"); |
| 600 | } |
| 601 | |
| 602 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 603 | PyNumber_Remainder(PyObject *v, PyObject *w) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 604 | { |
Guido van Rossum | fa0b6ab | 1998-05-22 15:23:36 +0000 | [diff] [blame] | 605 | if (PyString_Check(v)) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 606 | return PyString_Format(v, w); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 607 | #ifdef Py_USING_UNICODE |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 608 | else if (PyUnicode_Check(v)) |
| 609 | return PyUnicode_Format(v, w); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 610 | #endif |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 611 | return binary_op(v, w, NB_SLOT(nb_remainder), "%"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 612 | } |
| 613 | |
| 614 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 615 | PyNumber_Power(PyObject *v, PyObject *w, PyObject *z) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 616 | { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 617 | return ternary_op(v, w, z, NB_SLOT(nb_power), "** or pow()"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 618 | } |
| 619 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 620 | /* Binary in-place operators */ |
| 621 | |
| 622 | /* The in-place operators are defined to fall back to the 'normal', |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 623 | non in-place operations, if the in-place methods are not in place. |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 624 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 625 | - If the left hand object has the appropriate struct members, and |
| 626 | they are filled, call the appropriate function and return the |
| 627 | result. No coercion is done on the arguments; the left-hand object |
| 628 | is the one the operation is performed on, and it's up to the |
| 629 | function to deal with the right-hand object. |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 630 | |
| 631 | - Otherwise, in-place modification is not supported. Handle it exactly as |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 632 | a non in-place operation of the same kind. |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 633 | |
| 634 | */ |
| 635 | |
| 636 | #define HASINPLACE(t) PyType_HasFeature((t)->ob_type, Py_TPFLAGS_HAVE_INPLACEOPS) |
| 637 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 638 | static PyObject * |
| 639 | binary_iop(PyObject *v, PyObject *w, const int iop_slot, const int op_slot, |
| 640 | const char *op_name) |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 641 | { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 642 | PyNumberMethods *mv = v->ob_type->tp_as_number; |
| 643 | if (mv != NULL && HASINPLACE(v)) { |
| 644 | binaryfunc *slot = NB_BINOP(mv, iop_slot); |
| 645 | if (*slot) { |
| 646 | PyObject *x = (*slot)(v, w); |
| 647 | if (x != Py_NotImplemented) { |
| 648 | return x; |
| 649 | } |
| 650 | Py_DECREF(x); |
| 651 | } |
Thomas Wouters | f2b332d | 2000-09-02 08:34:40 +0000 | [diff] [blame] | 652 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 653 | return binary_op(v, w, op_slot, op_name); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 654 | } |
| 655 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 656 | #define INPLACE_BINOP(func, iop, op, op_name) \ |
| 657 | PyObject * \ |
| 658 | func(PyObject *v, PyObject *w) { \ |
| 659 | return binary_iop(v, w, NB_SLOT(iop), NB_SLOT(op), op_name); \ |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 660 | } |
| 661 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 662 | INPLACE_BINOP(PyNumber_InPlaceOr, nb_inplace_or, nb_or, "|=") |
| 663 | INPLACE_BINOP(PyNumber_InPlaceXor, nb_inplace_xor, nb_xor, "^=") |
| 664 | INPLACE_BINOP(PyNumber_InPlaceAnd, nb_inplace_and, nb_and, "&=") |
| 665 | INPLACE_BINOP(PyNumber_InPlaceLshift, nb_inplace_lshift, nb_lshift, "<<=") |
| 666 | INPLACE_BINOP(PyNumber_InPlaceRshift, nb_inplace_rshift, nb_rshift, ">>=") |
| 667 | INPLACE_BINOP(PyNumber_InPlaceSubtract, nb_inplace_subtract, nb_subtract, "-=") |
| 668 | INPLACE_BINOP(PyNumber_InPlaceDivide, nb_inplace_divide, nb_divide, "/=") |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 669 | |
| 670 | PyObject * |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 671 | PyNumber_InPlaceFloorDivide(PyObject *v, PyObject *w) |
| 672 | { |
| 673 | /* XXX tp_flags test */ |
| 674 | return binary_iop(v, w, NB_SLOT(nb_inplace_floor_divide), |
| 675 | NB_SLOT(nb_floor_divide), "//="); |
| 676 | } |
| 677 | |
| 678 | PyObject * |
| 679 | PyNumber_InPlaceTrueDivide(PyObject *v, PyObject *w) |
| 680 | { |
| 681 | /* XXX tp_flags test */ |
| 682 | return binary_iop(v, w, NB_SLOT(nb_inplace_true_divide), |
| 683 | NB_SLOT(nb_true_divide), "/="); |
| 684 | } |
| 685 | |
| 686 | PyObject * |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 687 | PyNumber_InPlaceAdd(PyObject *v, PyObject *w) |
| 688 | { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 689 | binaryfunc f = NULL; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 690 | |
Guido van Rossum | bb8be93 | 2000-09-01 23:27:32 +0000 | [diff] [blame] | 691 | if (v->ob_type->tp_as_sequence != NULL) { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 692 | if (HASINPLACE(v)) |
| 693 | f = v->ob_type->tp_as_sequence->sq_inplace_concat; |
| 694 | if (f == NULL) |
| 695 | f = v->ob_type->tp_as_sequence->sq_concat; |
Guido van Rossum | bb8be93 | 2000-09-01 23:27:32 +0000 | [diff] [blame] | 696 | if (f != NULL) |
| 697 | return (*f)(v, w); |
| 698 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 699 | return binary_iop(v, w, NB_SLOT(nb_inplace_add), NB_SLOT(nb_add), "+="); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 700 | } |
| 701 | |
| 702 | PyObject * |
| 703 | PyNumber_InPlaceMultiply(PyObject *v, PyObject *w) |
| 704 | { |
Thomas Wouters | f2b332d | 2000-09-02 08:34:40 +0000 | [diff] [blame] | 705 | PyObject * (*g)(PyObject *, int) = NULL; |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 706 | if (HASINPLACE(v) && v->ob_type->tp_as_sequence && |
| 707 | (g = v->ob_type->tp_as_sequence->sq_inplace_repeat)) { |
| 708 | long n; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 709 | if (PyInt_Check(w)) { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 710 | n = PyInt_AsLong(w); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 711 | } |
| 712 | else if (PyLong_Check(w)) { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 713 | n = PyLong_AsLong(w); |
| 714 | if (n == -1 && PyErr_Occurred()) |
| 715 | return NULL; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 716 | } |
| 717 | else { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 718 | return type_error("can't multiply sequence to non-int"); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 719 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 720 | return (*g)(v, (int)n); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 721 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 722 | return binary_iop(v, w, NB_SLOT(nb_inplace_multiply), |
| 723 | NB_SLOT(nb_multiply), "*="); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 724 | } |
| 725 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 726 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 727 | |
| 728 | PyObject * |
| 729 | PyNumber_InPlaceRemainder(PyObject *v, PyObject *w) |
| 730 | { |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 731 | if (PyString_Check(v)) |
| 732 | return PyString_Format(v, w); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 733 | #ifdef Py_USING_UNICODE |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 734 | else if (PyUnicode_Check(v)) |
| 735 | return PyUnicode_Format(v, w); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 736 | #endif |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 737 | else |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 738 | return binary_iop(v, w, NB_SLOT(nb_inplace_remainder), |
| 739 | NB_SLOT(nb_remainder), "%="); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 740 | } |
| 741 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 742 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 743 | PyObject * |
| 744 | PyNumber_InPlacePower(PyObject *v, PyObject *w, PyObject *z) |
| 745 | { |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 746 | if (HASINPLACE(v) && v->ob_type->tp_as_number && |
| 747 | v->ob_type->tp_as_number->nb_inplace_power != NULL) { |
| 748 | return ternary_op(v, w, z, NB_SLOT(nb_inplace_power), "**="); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 749 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 750 | else { |
| 751 | return ternary_op(v, w, z, NB_SLOT(nb_power), "**="); |
| 752 | } |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 753 | } |
| 754 | |
| 755 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 756 | /* Unary operators and functions */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 757 | |
| 758 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 759 | PyNumber_Negative(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 760 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 761 | PyNumberMethods *m; |
| 762 | |
| 763 | if (o == NULL) |
| 764 | return null_error(); |
| 765 | m = o->ob_type->tp_as_number; |
| 766 | if (m && m->nb_negative) |
| 767 | return (*m->nb_negative)(o); |
| 768 | |
| 769 | return type_error("bad operand type for unary -"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 770 | } |
| 771 | |
| 772 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 773 | PyNumber_Positive(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 774 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 775 | PyNumberMethods *m; |
| 776 | |
| 777 | if (o == NULL) |
| 778 | return null_error(); |
| 779 | m = o->ob_type->tp_as_number; |
| 780 | if (m && m->nb_positive) |
| 781 | return (*m->nb_positive)(o); |
| 782 | |
| 783 | return type_error("bad operand type for unary +"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 784 | } |
| 785 | |
| 786 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 787 | PyNumber_Invert(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 788 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 789 | PyNumberMethods *m; |
| 790 | |
| 791 | if (o == NULL) |
| 792 | return null_error(); |
| 793 | m = o->ob_type->tp_as_number; |
| 794 | if (m && m->nb_invert) |
| 795 | return (*m->nb_invert)(o); |
| 796 | |
| 797 | return type_error("bad operand type for unary ~"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 801 | PyNumber_Absolute(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 802 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 803 | PyNumberMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 804 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 805 | if (o == NULL) |
| 806 | return null_error(); |
| 807 | m = o->ob_type->tp_as_number; |
| 808 | if (m && m->nb_absolute) |
| 809 | return m->nb_absolute(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 810 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 811 | return type_error("bad operand type for abs()"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 812 | } |
| 813 | |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 814 | /* Add a check for embedded NULL-bytes in the argument. */ |
| 815 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 816 | int_from_string(const char *s, int len) |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 817 | { |
| 818 | char *end; |
| 819 | PyObject *x; |
| 820 | |
| 821 | x = PyInt_FromString((char*)s, &end, 10); |
| 822 | if (x == NULL) |
| 823 | return NULL; |
| 824 | if (end != s + len) { |
| 825 | PyErr_SetString(PyExc_ValueError, |
| 826 | "null byte in argument for int()"); |
| 827 | Py_DECREF(x); |
| 828 | return NULL; |
| 829 | } |
| 830 | return x; |
| 831 | } |
| 832 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 833 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 834 | PyNumber_Int(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 835 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 836 | PyNumberMethods *m; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 837 | const char *buffer; |
| 838 | int buffer_len; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 839 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 840 | if (o == NULL) |
| 841 | return null_error(); |
Tim Peters | 64b5ce3 | 2001-09-10 20:52:51 +0000 | [diff] [blame] | 842 | if (PyInt_CheckExact(o)) { |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 843 | Py_INCREF(o); |
| 844 | return o; |
| 845 | } |
Tim Peters | 64b5ce3 | 2001-09-10 20:52:51 +0000 | [diff] [blame] | 846 | if (PyInt_Check(o)) { |
| 847 | PyIntObject *io = (PyIntObject*)o; |
| 848 | return PyInt_FromLong(io->ob_ival); |
| 849 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 850 | if (PyString_Check(o)) |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 851 | return int_from_string(PyString_AS_STRING(o), |
| 852 | PyString_GET_SIZE(o)); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 853 | #ifdef Py_USING_UNICODE |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 854 | if (PyUnicode_Check(o)) |
| 855 | return PyInt_FromUnicode(PyUnicode_AS_UNICODE(o), |
| 856 | PyUnicode_GET_SIZE(o), |
| 857 | 10); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 858 | #endif |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 859 | m = o->ob_type->tp_as_number; |
| 860 | if (m && m->nb_int) |
| 861 | return m->nb_int(o); |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 862 | if (!PyObject_AsCharBuffer(o, &buffer, &buffer_len)) |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 863 | return int_from_string((char*)buffer, buffer_len); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 864 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 865 | return type_error("object can't be converted to int"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 866 | } |
| 867 | |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 868 | /* Add a check for embedded NULL-bytes in the argument. */ |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 869 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 870 | long_from_string(const char *s, int len) |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 871 | { |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 872 | char *end; |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 873 | PyObject *x; |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 874 | |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 875 | x = PyLong_FromString((char*)s, &end, 10); |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 876 | if (x == NULL) |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 877 | return NULL; |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 878 | if (end != s + len) { |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 879 | PyErr_SetString(PyExc_ValueError, |
| 880 | "null byte in argument for long()"); |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 881 | Py_DECREF(x); |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 882 | return NULL; |
| 883 | } |
| 884 | return x; |
| 885 | } |
| 886 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 887 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 888 | PyNumber_Long(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 889 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 890 | PyNumberMethods *m; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 891 | const char *buffer; |
| 892 | int buffer_len; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 893 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 894 | if (o == NULL) |
| 895 | return null_error(); |
Tim Peters | 64b5ce3 | 2001-09-10 20:52:51 +0000 | [diff] [blame] | 896 | if (PyLong_CheckExact(o)) { |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 897 | Py_INCREF(o); |
| 898 | return o; |
| 899 | } |
Tim Peters | 64b5ce3 | 2001-09-10 20:52:51 +0000 | [diff] [blame] | 900 | if (PyLong_Check(o)) |
| 901 | return _PyLong_Copy((PyLongObject *)o); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 902 | if (PyString_Check(o)) |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 903 | /* need to do extra error checking that PyLong_FromString() |
| 904 | * doesn't do. In particular long('9.5') must raise an |
| 905 | * exception, not truncate the float. |
| 906 | */ |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 907 | return long_from_string(PyString_AS_STRING(o), |
| 908 | PyString_GET_SIZE(o)); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 909 | #ifdef Py_USING_UNICODE |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 910 | if (PyUnicode_Check(o)) |
| 911 | /* The above check is done in PyLong_FromUnicode(). */ |
| 912 | return PyLong_FromUnicode(PyUnicode_AS_UNICODE(o), |
| 913 | PyUnicode_GET_SIZE(o), |
| 914 | 10); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 915 | #endif |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 916 | m = o->ob_type->tp_as_number; |
| 917 | if (m && m->nb_long) |
| 918 | return m->nb_long(o); |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 919 | if (!PyObject_AsCharBuffer(o, &buffer, &buffer_len)) |
| 920 | return long_from_string(buffer, buffer_len); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 921 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 922 | return type_error("object can't be converted to long"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 923 | } |
| 924 | |
| 925 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 926 | PyNumber_Float(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 927 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 928 | PyNumberMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 929 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 930 | if (o == NULL) |
| 931 | return null_error(); |
Tim Peters | 7a50f25 | 2001-09-10 21:28:20 +0000 | [diff] [blame] | 932 | if (PyFloat_CheckExact(o)) { |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 933 | Py_INCREF(o); |
| 934 | return o; |
| 935 | } |
Tim Peters | 7a50f25 | 2001-09-10 21:28:20 +0000 | [diff] [blame] | 936 | if (PyFloat_Check(o)) { |
| 937 | PyFloatObject *po = (PyFloatObject *)o; |
| 938 | return PyFloat_FromDouble(po->ob_fval); |
| 939 | } |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 940 | if (!PyString_Check(o)) { |
| 941 | m = o->ob_type->tp_as_number; |
| 942 | if (m && m->nb_float) |
| 943 | return m->nb_float(o); |
| 944 | } |
| 945 | return PyFloat_FromString(o, NULL); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 946 | } |
| 947 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 948 | /* Operations on sequences */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 949 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 950 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 951 | PySequence_Check(PyObject *s) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 952 | { |
Guido van Rossum | 8700b42 | 2001-09-07 20:20:11 +0000 | [diff] [blame] | 953 | return s != NULL && s->ob_type->tp_as_sequence && |
| 954 | s->ob_type->tp_as_sequence->sq_item != NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 955 | } |
| 956 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 957 | int |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 958 | PySequence_Size(PyObject *s) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 959 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 960 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 961 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 962 | if (s == NULL) { |
| 963 | null_error(); |
| 964 | return -1; |
| 965 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 966 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 967 | m = s->ob_type->tp_as_sequence; |
| 968 | if (m && m->sq_length) |
| 969 | return m->sq_length(s); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 970 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 971 | type_error("len() of unsized object"); |
| 972 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 973 | } |
| 974 | |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 975 | #undef PySequence_Length |
| 976 | int |
| 977 | PySequence_Length(PyObject *s) |
| 978 | { |
| 979 | return PySequence_Size(s); |
| 980 | } |
| 981 | #define PySequence_Length PySequence_Size |
| 982 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 983 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 984 | PySequence_Concat(PyObject *s, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 985 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 986 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 987 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 988 | if (s == NULL || o == NULL) |
| 989 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 990 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 991 | m = s->ob_type->tp_as_sequence; |
| 992 | if (m && m->sq_concat) |
| 993 | return m->sq_concat(s, o); |
| 994 | |
| 995 | return type_error("object can't be concatenated"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 996 | } |
| 997 | |
| 998 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 999 | PySequence_Repeat(PyObject *o, int count) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1000 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1001 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1002 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1003 | if (o == NULL) |
| 1004 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1005 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1006 | m = o->ob_type->tp_as_sequence; |
| 1007 | if (m && m->sq_repeat) |
| 1008 | return m->sq_repeat(o, count); |
| 1009 | |
| 1010 | return type_error("object can't be repeated"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1011 | } |
| 1012 | |
| 1013 | PyObject * |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1014 | PySequence_InPlaceConcat(PyObject *s, PyObject *o) |
| 1015 | { |
| 1016 | PySequenceMethods *m; |
| 1017 | |
| 1018 | if (s == NULL || o == NULL) |
| 1019 | return null_error(); |
| 1020 | |
| 1021 | m = s->ob_type->tp_as_sequence; |
| 1022 | if (m && HASINPLACE(s) && m->sq_inplace_concat) |
| 1023 | return m->sq_inplace_concat(s, o); |
| 1024 | if (m && m->sq_concat) |
| 1025 | return m->sq_concat(s, o); |
| 1026 | |
| 1027 | return type_error("object can't be concatenated"); |
| 1028 | } |
| 1029 | |
| 1030 | PyObject * |
| 1031 | PySequence_InPlaceRepeat(PyObject *o, int count) |
| 1032 | { |
| 1033 | PySequenceMethods *m; |
| 1034 | |
| 1035 | if (o == NULL) |
| 1036 | return null_error(); |
| 1037 | |
| 1038 | m = o->ob_type->tp_as_sequence; |
| 1039 | if (m && HASINPLACE(o) && m->sq_inplace_repeat) |
| 1040 | return m->sq_inplace_repeat(o, count); |
| 1041 | if (m && m->sq_repeat) |
| 1042 | return m->sq_repeat(o, count); |
| 1043 | |
| 1044 | return type_error("object can't be repeated"); |
| 1045 | } |
| 1046 | |
| 1047 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1048 | PySequence_GetItem(PyObject *s, int i) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1049 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1050 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1051 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1052 | if (s == NULL) |
| 1053 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1054 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1055 | m = s->ob_type->tp_as_sequence; |
| 1056 | if (m && m->sq_item) { |
| 1057 | if (i < 0) { |
| 1058 | if (m->sq_length) { |
| 1059 | int l = (*m->sq_length)(s); |
| 1060 | if (l < 0) |
| 1061 | return NULL; |
| 1062 | i += l; |
| 1063 | } |
| 1064 | } |
| 1065 | return m->sq_item(s, i); |
| 1066 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1067 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1068 | return type_error("unindexable object"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1069 | } |
| 1070 | |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1071 | static PyObject * |
| 1072 | sliceobj_from_intint(int i, int j) |
| 1073 | { |
| 1074 | PyObject *start, *end, *slice; |
| 1075 | start = PyInt_FromLong((long)i); |
| 1076 | if (!start) |
| 1077 | return NULL; |
| 1078 | end = PyInt_FromLong((long)j); |
| 1079 | if (!end) { |
| 1080 | Py_DECREF(start); |
| 1081 | return NULL; |
| 1082 | } |
| 1083 | slice = PySlice_New(start, end, NULL); |
| 1084 | Py_DECREF(start); |
| 1085 | Py_DECREF(end); |
| 1086 | return slice; |
| 1087 | } |
| 1088 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1089 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1090 | PySequence_GetSlice(PyObject *s, int i1, int i2) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1091 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1092 | PySequenceMethods *m; |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1093 | PyMappingMethods *mp; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1094 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1095 | if (!s) return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1096 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1097 | m = s->ob_type->tp_as_sequence; |
| 1098 | if (m && m->sq_slice) { |
| 1099 | if (i1 < 0 || i2 < 0) { |
| 1100 | if (m->sq_length) { |
| 1101 | int l = (*m->sq_length)(s); |
| 1102 | if (l < 0) |
| 1103 | return NULL; |
| 1104 | if (i1 < 0) |
| 1105 | i1 += l; |
| 1106 | if (i2 < 0) |
| 1107 | i2 += l; |
| 1108 | } |
| 1109 | } |
| 1110 | return m->sq_slice(s, i1, i2); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1111 | } else if ((mp = s->ob_type->tp_as_mapping) && mp->mp_subscript) { |
| 1112 | PyObject *res; |
| 1113 | PyObject *slice = sliceobj_from_intint(i1, i2); |
| 1114 | if (!slice) |
| 1115 | return NULL; |
| 1116 | res = mp->mp_subscript(s, slice); |
| 1117 | Py_DECREF(slice); |
| 1118 | return res; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1119 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1120 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1121 | return type_error("unsliceable object"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1122 | } |
| 1123 | |
| 1124 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1125 | PySequence_SetItem(PyObject *s, int i, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1126 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1127 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1128 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1129 | if (s == NULL) { |
| 1130 | null_error(); |
| 1131 | return -1; |
| 1132 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1133 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1134 | m = s->ob_type->tp_as_sequence; |
| 1135 | if (m && m->sq_ass_item) { |
| 1136 | if (i < 0) { |
| 1137 | if (m->sq_length) { |
| 1138 | int l = (*m->sq_length)(s); |
| 1139 | if (l < 0) |
Guido van Rossum | ed6219b | 1998-05-29 02:59:33 +0000 | [diff] [blame] | 1140 | return -1; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1141 | i += l; |
| 1142 | } |
| 1143 | } |
| 1144 | return m->sq_ass_item(s, i, o); |
| 1145 | } |
| 1146 | |
| 1147 | type_error("object doesn't support item assignment"); |
| 1148 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1149 | } |
| 1150 | |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1151 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1152 | PySequence_DelItem(PyObject *s, int i) |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1153 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1154 | PySequenceMethods *m; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1155 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1156 | if (s == NULL) { |
| 1157 | null_error(); |
| 1158 | return -1; |
| 1159 | } |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1160 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1161 | m = s->ob_type->tp_as_sequence; |
| 1162 | if (m && m->sq_ass_item) { |
| 1163 | if (i < 0) { |
| 1164 | if (m->sq_length) { |
| 1165 | int l = (*m->sq_length)(s); |
| 1166 | if (l < 0) |
Guido van Rossum | ed6219b | 1998-05-29 02:59:33 +0000 | [diff] [blame] | 1167 | return -1; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1168 | i += l; |
| 1169 | } |
| 1170 | } |
| 1171 | return m->sq_ass_item(s, i, (PyObject *)NULL); |
| 1172 | } |
| 1173 | |
| 1174 | type_error("object doesn't support item deletion"); |
| 1175 | return -1; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1176 | } |
| 1177 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1178 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1179 | PySequence_SetSlice(PyObject *s, int i1, int i2, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1180 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1181 | PySequenceMethods *m; |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1182 | PyMappingMethods *mp; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1183 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1184 | if (s == NULL) { |
| 1185 | null_error(); |
| 1186 | return -1; |
| 1187 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1188 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1189 | m = s->ob_type->tp_as_sequence; |
| 1190 | if (m && m->sq_ass_slice) { |
| 1191 | if (i1 < 0 || i2 < 0) { |
| 1192 | if (m->sq_length) { |
| 1193 | int l = (*m->sq_length)(s); |
| 1194 | if (l < 0) |
Guido van Rossum | ed6219b | 1998-05-29 02:59:33 +0000 | [diff] [blame] | 1195 | return -1; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1196 | if (i1 < 0) |
| 1197 | i1 += l; |
| 1198 | if (i2 < 0) |
| 1199 | i2 += l; |
| 1200 | } |
| 1201 | } |
| 1202 | return m->sq_ass_slice(s, i1, i2, o); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1203 | } else if ((mp = s->ob_type->tp_as_mapping) && mp->mp_ass_subscript) { |
| 1204 | int res; |
| 1205 | PyObject *slice = sliceobj_from_intint(i1, i2); |
| 1206 | if (!slice) |
| 1207 | return -1; |
| 1208 | res = mp->mp_ass_subscript(s, slice, o); |
| 1209 | Py_DECREF(slice); |
| 1210 | return res; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1211 | } |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1212 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1213 | type_error("object doesn't support slice assignment"); |
| 1214 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1215 | } |
| 1216 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1217 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1218 | PySequence_DelSlice(PyObject *s, int i1, int i2) |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1219 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1220 | PySequenceMethods *m; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1221 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1222 | if (s == NULL) { |
| 1223 | null_error(); |
| 1224 | return -1; |
| 1225 | } |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1226 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1227 | m = s->ob_type->tp_as_sequence; |
| 1228 | if (m && m->sq_ass_slice) { |
| 1229 | if (i1 < 0 || i2 < 0) { |
| 1230 | if (m->sq_length) { |
| 1231 | int l = (*m->sq_length)(s); |
| 1232 | if (l < 0) |
Guido van Rossum | ed6219b | 1998-05-29 02:59:33 +0000 | [diff] [blame] | 1233 | return -1; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1234 | if (i1 < 0) |
| 1235 | i1 += l; |
| 1236 | if (i2 < 0) |
| 1237 | i2 += l; |
| 1238 | } |
| 1239 | } |
| 1240 | return m->sq_ass_slice(s, i1, i2, (PyObject *)NULL); |
| 1241 | } |
| 1242 | type_error("object doesn't support slice deletion"); |
| 1243 | return -1; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1244 | } |
| 1245 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1246 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1247 | PySequence_Tuple(PyObject *v) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1248 | { |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1249 | PyObject *it; /* iter(v) */ |
| 1250 | int n; /* guess for result tuple size */ |
| 1251 | PyObject *result; |
| 1252 | int j; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1253 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1254 | if (v == NULL) |
| 1255 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1256 | |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1257 | /* Special-case the common tuple and list cases, for efficiency. */ |
Tim Peters | 4c3a0a3 | 2001-09-10 23:37:46 +0000 | [diff] [blame] | 1258 | if (PyTuple_CheckExact(v)) { |
| 1259 | /* Note that we can't know whether it's safe to return |
| 1260 | a tuple *subclass* instance as-is, hence the restriction |
Tim Peters | 8ff70a9 | 2001-09-10 23:53:53 +0000 | [diff] [blame] | 1261 | to exact tuples here. In contrast, lists always make |
| 1262 | a copy, so there's no need for exactness below. */ |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1263 | Py_INCREF(v); |
| 1264 | return v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1265 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1266 | if (PyList_Check(v)) |
| 1267 | return PyList_AsTuple(v); |
| 1268 | |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1269 | /* Get iterator. */ |
| 1270 | it = PyObject_GetIter(v); |
| 1271 | if (it == NULL) |
| 1272 | return type_error("tuple() argument must support iteration"); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1273 | |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1274 | /* Guess result size and allocate space. */ |
| 1275 | n = PySequence_Size(v); |
| 1276 | if (n < 0) { |
| 1277 | PyErr_Clear(); |
| 1278 | n = 10; /* arbitrary */ |
| 1279 | } |
| 1280 | result = PyTuple_New(n); |
| 1281 | if (result == NULL) |
| 1282 | goto Fail; |
| 1283 | |
| 1284 | /* Fill the tuple. */ |
| 1285 | for (j = 0; ; ++j) { |
| 1286 | PyObject *item = PyIter_Next(it); |
| 1287 | if (item == NULL) { |
| 1288 | if (PyErr_Occurred()) |
| 1289 | goto Fail; |
| 1290 | break; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1291 | } |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1292 | if (j >= n) { |
| 1293 | if (n < 500) |
| 1294 | n += 10; |
| 1295 | else |
| 1296 | n += 100; |
Tim Peters | 4324aa3 | 2001-05-28 22:30:08 +0000 | [diff] [blame] | 1297 | if (_PyTuple_Resize(&result, n) != 0) { |
Tim Peters | 12d0a6c | 2001-05-05 04:10:25 +0000 | [diff] [blame] | 1298 | Py_DECREF(item); |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1299 | goto Fail; |
Tim Peters | 12d0a6c | 2001-05-05 04:10:25 +0000 | [diff] [blame] | 1300 | } |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1301 | } |
| 1302 | PyTuple_SET_ITEM(result, j, item); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1303 | } |
| 1304 | |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1305 | /* Cut tuple back if guess was too large. */ |
| 1306 | if (j < n && |
Tim Peters | 4324aa3 | 2001-05-28 22:30:08 +0000 | [diff] [blame] | 1307 | _PyTuple_Resize(&result, j) != 0) |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1308 | goto Fail; |
| 1309 | |
| 1310 | Py_DECREF(it); |
| 1311 | return result; |
| 1312 | |
| 1313 | Fail: |
| 1314 | Py_XDECREF(result); |
| 1315 | Py_DECREF(it); |
| 1316 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1317 | } |
| 1318 | |
Guido van Rossum | 3c5936a | 1996-12-05 21:51:24 +0000 | [diff] [blame] | 1319 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1320 | PySequence_List(PyObject *v) |
Guido van Rossum | 3c5936a | 1996-12-05 21:51:24 +0000 | [diff] [blame] | 1321 | { |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 1322 | PyObject *it; /* iter(v) */ |
| 1323 | PyObject *result; /* result list */ |
| 1324 | int n; /* guess for result list size */ |
| 1325 | int i; |
Guido van Rossum | 4669fb4 | 1997-04-02 05:31:09 +0000 | [diff] [blame] | 1326 | |
Guido van Rossum | 5dba9e8 | 1998-07-10 18:03:50 +0000 | [diff] [blame] | 1327 | if (v == NULL) |
| 1328 | return null_error(); |
| 1329 | |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 1330 | /* Special-case list(a_list), for speed. */ |
Guido van Rossum | 5dba9e8 | 1998-07-10 18:03:50 +0000 | [diff] [blame] | 1331 | if (PyList_Check(v)) |
| 1332 | return PyList_GetSlice(v, 0, PyList_GET_SIZE(v)); |
| 1333 | |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 1334 | /* Get iterator. There may be some low-level efficiency to be gained |
| 1335 | * by caching the tp_iternext slot instead of using PyIter_Next() |
| 1336 | * later, but premature optimization is the root etc. |
| 1337 | */ |
| 1338 | it = PyObject_GetIter(v); |
| 1339 | if (it == NULL) |
| 1340 | return NULL; |
| 1341 | |
| 1342 | /* Guess a result list size. */ |
| 1343 | n = -1; /* unknown */ |
| 1344 | if (PySequence_Check(v) && |
| 1345 | v->ob_type->tp_as_sequence->sq_length) { |
| 1346 | n = PySequence_Size(v); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1347 | if (n < 0) |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 1348 | PyErr_Clear(); |
| 1349 | } |
| 1350 | if (n < 0) |
| 1351 | n = 8; /* arbitrary */ |
| 1352 | result = PyList_New(n); |
| 1353 | if (result == NULL) { |
| 1354 | Py_DECREF(it); |
| 1355 | return NULL; |
| 1356 | } |
| 1357 | |
| 1358 | /* Run iterator to exhaustion. */ |
| 1359 | for (i = 0; ; i++) { |
| 1360 | PyObject *item = PyIter_Next(it); |
| 1361 | if (item == NULL) { |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 1362 | if (PyErr_Occurred()) { |
Tim Peters | f4848da | 2001-05-05 00:14:56 +0000 | [diff] [blame] | 1363 | Py_DECREF(result); |
| 1364 | result = NULL; |
Guido van Rossum | bfc725b | 1998-07-10 16:22:44 +0000 | [diff] [blame] | 1365 | } |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 1366 | break; |
Guido van Rossum | bfc725b | 1998-07-10 16:22:44 +0000 | [diff] [blame] | 1367 | } |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 1368 | if (i < n) |
Tim Peters | 6ad22c4 | 2001-05-02 07:12:39 +0000 | [diff] [blame] | 1369 | PyList_SET_ITEM(result, i, item); /* steals ref */ |
| 1370 | else { |
| 1371 | int status = PyList_Append(result, item); |
| 1372 | Py_DECREF(item); /* append creates a new ref */ |
| 1373 | if (status < 0) { |
| 1374 | Py_DECREF(result); |
| 1375 | result = NULL; |
| 1376 | break; |
| 1377 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1378 | } |
Guido van Rossum | 4669fb4 | 1997-04-02 05:31:09 +0000 | [diff] [blame] | 1379 | } |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 1380 | |
| 1381 | /* Cut back result list if initial guess was too large. */ |
| 1382 | if (i < n && result != NULL) { |
| 1383 | if (PyList_SetSlice(result, i, n, (PyObject *)NULL) != 0) { |
| 1384 | Py_DECREF(result); |
| 1385 | result = NULL; |
| 1386 | } |
| 1387 | } |
| 1388 | Py_DECREF(it); |
| 1389 | return result; |
Guido van Rossum | 3c5936a | 1996-12-05 21:51:24 +0000 | [diff] [blame] | 1390 | } |
| 1391 | |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 1392 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1393 | PySequence_Fast(PyObject *v, const char *m) |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 1394 | { |
| 1395 | if (v == NULL) |
| 1396 | return null_error(); |
| 1397 | |
| 1398 | if (PyList_Check(v) || PyTuple_Check(v)) { |
| 1399 | Py_INCREF(v); |
| 1400 | return v; |
| 1401 | } |
| 1402 | |
| 1403 | v = PySequence_Tuple(v); |
| 1404 | if (v == NULL && PyErr_ExceptionMatches(PyExc_TypeError)) |
| 1405 | return type_error(m); |
| 1406 | |
| 1407 | return v; |
| 1408 | } |
| 1409 | |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1410 | /* Iterate over seq. Result depends on the operation: |
| 1411 | PY_ITERSEARCH_COUNT: -1 if error, else # of times obj appears in seq. |
| 1412 | PY_ITERSEARCH_INDEX: 0-based index of first occurence of obj in seq; |
| 1413 | set ValueError and return -1 if none found; also return -1 on error. |
| 1414 | Py_ITERSEARCH_CONTAINS: return 1 if obj in seq, else 0; -1 on error. |
| 1415 | */ |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1416 | int |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1417 | _PySequence_IterSearch(PyObject *seq, PyObject *obj, int operation) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1418 | { |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1419 | int n; |
| 1420 | int wrapped; /* for PY_ITERSEARCH_INDEX, true iff n wrapped around */ |
| 1421 | PyObject *it; /* iter(seq) */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1422 | |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1423 | if (seq == NULL || obj == NULL) { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1424 | null_error(); |
| 1425 | return -1; |
| 1426 | } |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1427 | |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1428 | it = PyObject_GetIter(seq); |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1429 | if (it == NULL) { |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1430 | type_error("iterable argument required"); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1431 | return -1; |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1432 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1433 | |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1434 | n = wrapped = 0; |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1435 | for (;;) { |
| 1436 | int cmp; |
| 1437 | PyObject *item = PyIter_Next(it); |
| 1438 | if (item == NULL) { |
| 1439 | if (PyErr_Occurred()) |
| 1440 | goto Fail; |
| 1441 | break; |
| 1442 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1443 | |
| 1444 | cmp = PyObject_RichCompareBool(obj, item, Py_EQ); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1445 | Py_DECREF(item); |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1446 | if (cmp < 0) |
| 1447 | goto Fail; |
| 1448 | if (cmp > 0) { |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1449 | switch (operation) { |
| 1450 | case PY_ITERSEARCH_COUNT: |
| 1451 | ++n; |
| 1452 | if (n <= 0) { |
| 1453 | PyErr_SetString(PyExc_OverflowError, |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1454 | "count exceeds C int size"); |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1455 | goto Fail; |
| 1456 | } |
| 1457 | break; |
| 1458 | |
| 1459 | case PY_ITERSEARCH_INDEX: |
| 1460 | if (wrapped) { |
| 1461 | PyErr_SetString(PyExc_OverflowError, |
| 1462 | "index exceeds C int size"); |
| 1463 | goto Fail; |
| 1464 | } |
| 1465 | goto Done; |
| 1466 | |
| 1467 | case PY_ITERSEARCH_CONTAINS: |
| 1468 | n = 1; |
| 1469 | goto Done; |
| 1470 | |
| 1471 | default: |
| 1472 | assert(!"unknown operation"); |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1473 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1474 | } |
| 1475 | |
| 1476 | if (operation == PY_ITERSEARCH_INDEX) { |
| 1477 | ++n; |
| 1478 | if (n <= 0) |
| 1479 | wrapped = 1; |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1480 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1481 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1482 | |
| 1483 | if (operation != PY_ITERSEARCH_INDEX) |
| 1484 | goto Done; |
| 1485 | |
| 1486 | PyErr_SetString(PyExc_ValueError, |
| 1487 | "sequence.index(x): x not in sequence"); |
| 1488 | /* fall into failure code */ |
| 1489 | Fail: |
| 1490 | n = -1; |
| 1491 | /* fall through */ |
| 1492 | Done: |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1493 | Py_DECREF(it); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1494 | return n; |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1495 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1496 | } |
| 1497 | |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1498 | /* Return # of times o appears in s. */ |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1499 | int |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1500 | PySequence_Count(PyObject *s, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1501 | { |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1502 | return _PySequence_IterSearch(s, o, PY_ITERSEARCH_COUNT); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1503 | } |
| 1504 | |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1505 | /* Return -1 if error; 1 if ob in seq; 0 if ob not in seq. |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1506 | * Use sq_contains if possible, else defer to _PySequence_IterSearch(). |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1507 | */ |
| 1508 | int |
| 1509 | PySequence_Contains(PyObject *seq, PyObject *ob) |
| 1510 | { |
| 1511 | if (PyType_HasFeature(seq->ob_type, Py_TPFLAGS_HAVE_SEQUENCE_IN)) { |
| 1512 | PySequenceMethods *sqm = seq->ob_type->tp_as_sequence; |
| 1513 | if (sqm != NULL && sqm->sq_contains != NULL) |
| 1514 | return (*sqm->sq_contains)(seq, ob); |
| 1515 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1516 | return _PySequence_IterSearch(seq, ob, PY_ITERSEARCH_CONTAINS); |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1517 | } |
| 1518 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1519 | /* Backwards compatibility */ |
| 1520 | #undef PySequence_In |
| 1521 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1522 | PySequence_In(PyObject *w, PyObject *v) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1523 | { |
| 1524 | return PySequence_Contains(w, v); |
| 1525 | } |
| 1526 | |
| 1527 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1528 | PySequence_Index(PyObject *s, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1529 | { |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1530 | return _PySequence_IterSearch(s, o, PY_ITERSEARCH_INDEX); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1531 | } |
| 1532 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1533 | /* Operations on mappings */ |
| 1534 | |
| 1535 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1536 | PyMapping_Check(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1537 | { |
Guido van Rossum | 8700b42 | 2001-09-07 20:20:11 +0000 | [diff] [blame] | 1538 | return o && o->ob_type->tp_as_mapping && |
| 1539 | o->ob_type->tp_as_mapping->mp_subscript; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1540 | } |
| 1541 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1542 | int |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 1543 | PyMapping_Size(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1544 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1545 | PyMappingMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1546 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1547 | if (o == NULL) { |
| 1548 | null_error(); |
| 1549 | return -1; |
| 1550 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1551 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1552 | m = o->ob_type->tp_as_mapping; |
| 1553 | if (m && m->mp_length) |
| 1554 | return m->mp_length(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1555 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1556 | type_error("len() of unsized object"); |
| 1557 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1558 | } |
| 1559 | |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1560 | #undef PyMapping_Length |
| 1561 | int |
| 1562 | PyMapping_Length(PyObject *o) |
| 1563 | { |
| 1564 | return PyMapping_Size(o); |
| 1565 | } |
| 1566 | #define PyMapping_Length PyMapping_Size |
| 1567 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1568 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1569 | PyMapping_GetItemString(PyObject *o, char *key) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1570 | { |
| 1571 | PyObject *okey, *r; |
| 1572 | |
| 1573 | if (key == NULL) |
| 1574 | return null_error(); |
| 1575 | |
| 1576 | okey = PyString_FromString(key); |
| 1577 | if (okey == NULL) |
| 1578 | return NULL; |
| 1579 | r = PyObject_GetItem(o, okey); |
| 1580 | Py_DECREF(okey); |
| 1581 | return r; |
| 1582 | } |
| 1583 | |
| 1584 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1585 | PyMapping_SetItemString(PyObject *o, char *key, PyObject *value) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1586 | { |
| 1587 | PyObject *okey; |
| 1588 | int r; |
| 1589 | |
| 1590 | if (key == NULL) { |
| 1591 | null_error(); |
| 1592 | return -1; |
| 1593 | } |
| 1594 | |
| 1595 | okey = PyString_FromString(key); |
| 1596 | if (okey == NULL) |
Guido van Rossum | ed6219b | 1998-05-29 02:59:33 +0000 | [diff] [blame] | 1597 | return -1; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1598 | r = PyObject_SetItem(o, okey, value); |
| 1599 | Py_DECREF(okey); |
| 1600 | return r; |
| 1601 | } |
| 1602 | |
| 1603 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1604 | PyMapping_HasKeyString(PyObject *o, char *key) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1605 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1606 | PyObject *v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1607 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1608 | v = PyMapping_GetItemString(o, key); |
| 1609 | if (v) { |
| 1610 | Py_DECREF(v); |
| 1611 | return 1; |
| 1612 | } |
| 1613 | PyErr_Clear(); |
| 1614 | return 0; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1615 | } |
| 1616 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1617 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1618 | PyMapping_HasKey(PyObject *o, PyObject *key) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1619 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1620 | PyObject *v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1621 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1622 | v = PyObject_GetItem(o, key); |
| 1623 | if (v) { |
| 1624 | Py_DECREF(v); |
| 1625 | return 1; |
| 1626 | } |
| 1627 | PyErr_Clear(); |
| 1628 | return 0; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1629 | } |
| 1630 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1631 | /* Operations on callable objects */ |
| 1632 | |
| 1633 | /* XXX PyCallable_Check() is in object.c */ |
| 1634 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1635 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1636 | PyObject_CallObject(PyObject *o, PyObject *a) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1637 | { |
Guido van Rossum | 5560b74 | 2001-09-14 16:47:50 +0000 | [diff] [blame] | 1638 | return PyEval_CallObjectWithKeywords(o, a, NULL); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1639 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1640 | |
| 1641 | PyObject * |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1642 | PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw) |
| 1643 | { |
| 1644 | ternaryfunc call; |
| 1645 | |
| 1646 | if ((call = func->ob_type->tp_call) != NULL) { |
| 1647 | PyObject *result = (*call)(func, arg, kw); |
| 1648 | if (result == NULL && !PyErr_Occurred()) |
| 1649 | PyErr_SetString( |
| 1650 | PyExc_SystemError, |
| 1651 | "NULL result without error in PyObject_Call"); |
| 1652 | return result; |
| 1653 | } |
| 1654 | PyErr_Format(PyExc_TypeError, "object is not callable: %s", |
| 1655 | PyString_AS_STRING(PyObject_Repr(func))); |
| 1656 | return NULL; |
| 1657 | } |
| 1658 | |
| 1659 | PyObject * |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1660 | PyObject_CallFunction(PyObject *callable, char *format, ...) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1661 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1662 | va_list va; |
| 1663 | PyObject *args, *retval; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1664 | va_start(va, format); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1665 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1666 | if (callable == NULL) { |
| 1667 | va_end(va); |
| 1668 | return null_error(); |
| 1669 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1670 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1671 | if (format) |
| 1672 | args = Py_VaBuildValue(format, va); |
| 1673 | else |
| 1674 | args = PyTuple_New(0); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1675 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1676 | va_end(va); |
| 1677 | |
| 1678 | if (args == NULL) |
| 1679 | return NULL; |
| 1680 | |
| 1681 | if (!PyTuple_Check(args)) { |
| 1682 | PyObject *a; |
| 1683 | |
| 1684 | a = PyTuple_New(1); |
| 1685 | if (a == NULL) |
| 1686 | return NULL; |
| 1687 | if (PyTuple_SetItem(a, 0, args) < 0) |
| 1688 | return NULL; |
| 1689 | args = a; |
| 1690 | } |
| 1691 | retval = PyObject_CallObject(callable, args); |
| 1692 | |
| 1693 | Py_DECREF(args); |
| 1694 | |
| 1695 | return retval; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1696 | } |
| 1697 | |
| 1698 | PyObject * |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1699 | PyObject_CallMethod(PyObject *o, char *name, char *format, ...) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1700 | { |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1701 | va_list va; |
| 1702 | PyObject *args, *func = 0, *retval; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1703 | va_start(va, format); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1704 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1705 | if (o == NULL || name == NULL) { |
| 1706 | va_end(va); |
| 1707 | return null_error(); |
| 1708 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1709 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1710 | func = PyObject_GetAttrString(o, name); |
| 1711 | if (func == NULL) { |
| 1712 | va_end(va); |
| 1713 | PyErr_SetString(PyExc_AttributeError, name); |
| 1714 | return 0; |
| 1715 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1716 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1717 | if (!PyCallable_Check(func)) { |
| 1718 | va_end(va); |
| 1719 | return type_error("call of non-callable attribute"); |
| 1720 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1721 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1722 | if (format && *format) |
| 1723 | args = Py_VaBuildValue(format, va); |
| 1724 | else |
| 1725 | args = PyTuple_New(0); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1726 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1727 | va_end(va); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1728 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1729 | if (!args) |
| 1730 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1731 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1732 | if (!PyTuple_Check(args)) { |
| 1733 | PyObject *a; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1734 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1735 | a = PyTuple_New(1); |
| 1736 | if (a == NULL) |
| 1737 | return NULL; |
| 1738 | if (PyTuple_SetItem(a, 0, args) < 0) |
| 1739 | return NULL; |
| 1740 | args = a; |
| 1741 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1742 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1743 | retval = PyObject_CallObject(func, args); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1744 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1745 | Py_DECREF(args); |
| 1746 | Py_DECREF(func); |
| 1747 | |
| 1748 | return retval; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1749 | } |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 1750 | |
| 1751 | |
| 1752 | /* isinstance(), issubclass() */ |
| 1753 | |
| 1754 | static int |
| 1755 | abstract_issubclass(PyObject *derived, PyObject *cls, int first) |
| 1756 | { |
| 1757 | static PyObject *__bases__ = NULL; |
| 1758 | PyObject *bases; |
| 1759 | int i, n; |
| 1760 | int r = 0; |
| 1761 | |
| 1762 | if (__bases__ == NULL) { |
| 1763 | __bases__ = PyString_FromString("__bases__"); |
| 1764 | if (__bases__ == NULL) |
| 1765 | return -1; |
| 1766 | } |
| 1767 | |
| 1768 | if (first) { |
| 1769 | bases = PyObject_GetAttr(cls, __bases__); |
| 1770 | if (bases == NULL || !PyTuple_Check(bases)) { |
| 1771 | Py_XDECREF(bases); |
| 1772 | PyErr_SetString(PyExc_TypeError, |
| 1773 | "issubclass() arg 2 must be a class"); |
| 1774 | return -1; |
| 1775 | } |
| 1776 | Py_DECREF(bases); |
| 1777 | } |
| 1778 | |
| 1779 | if (derived == cls) |
| 1780 | return 1; |
| 1781 | |
| 1782 | bases = PyObject_GetAttr(derived, __bases__); |
| 1783 | if (bases == NULL || !PyTuple_Check(bases)) { |
| 1784 | Py_XDECREF(bases); |
| 1785 | PyErr_SetString(PyExc_TypeError, |
| 1786 | "issubclass() arg 1 must be a class"); |
| 1787 | return -1; |
| 1788 | } |
| 1789 | |
| 1790 | n = PyTuple_GET_SIZE(bases); |
| 1791 | for (i = 0; i < n; i++) { |
| 1792 | r = abstract_issubclass(PyTuple_GET_ITEM(bases, i), cls, 0); |
| 1793 | if (r != 0) |
| 1794 | break; |
| 1795 | } |
| 1796 | |
| 1797 | Py_DECREF(bases); |
| 1798 | |
| 1799 | return r; |
| 1800 | } |
| 1801 | |
| 1802 | int |
| 1803 | PyObject_IsInstance(PyObject *inst, PyObject *cls) |
| 1804 | { |
| 1805 | PyObject *icls; |
| 1806 | static PyObject *__class__ = NULL; |
| 1807 | int retval = 0; |
| 1808 | |
| 1809 | if (PyClass_Check(cls)) { |
| 1810 | if (PyInstance_Check(inst)) { |
| 1811 | PyObject *inclass = |
| 1812 | (PyObject*)((PyInstanceObject*)inst)->in_class; |
| 1813 | retval = PyClass_IsSubclass(inclass, cls); |
| 1814 | } |
| 1815 | } |
| 1816 | else if (PyType_Check(cls)) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1817 | retval = PyObject_TypeCheck(inst, (PyTypeObject *)cls); |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 1818 | } |
| 1819 | else if (!PyInstance_Check(inst)) { |
| 1820 | if (__class__ == NULL) { |
| 1821 | __class__ = PyString_FromString("__class__"); |
| 1822 | if (__class__ == NULL) |
| 1823 | return -1; |
| 1824 | } |
| 1825 | icls = PyObject_GetAttr(inst, __class__); |
| 1826 | if (icls != NULL) { |
| 1827 | retval = abstract_issubclass(icls, cls, 1); |
| 1828 | Py_DECREF(icls); |
| 1829 | if (retval < 0 && |
| 1830 | !PyErr_ExceptionMatches(PyExc_TypeError)) |
| 1831 | return -1; |
| 1832 | } |
| 1833 | else |
| 1834 | retval = -1; |
| 1835 | } |
| 1836 | else |
| 1837 | retval = -1; |
| 1838 | |
| 1839 | if (retval < 0) { |
| 1840 | PyErr_SetString(PyExc_TypeError, |
| 1841 | "isinstance() arg 2 must be a class or type"); |
| 1842 | } |
| 1843 | return retval; |
| 1844 | } |
| 1845 | |
| 1846 | int |
| 1847 | PyObject_IsSubclass(PyObject *derived, PyObject *cls) |
| 1848 | { |
| 1849 | int retval; |
| 1850 | |
| 1851 | if (!PyClass_Check(derived) || !PyClass_Check(cls)) { |
| 1852 | retval = abstract_issubclass(derived, cls, 1); |
| 1853 | } |
| 1854 | else { |
| 1855 | /* shortcut */ |
| 1856 | if (!(retval = (derived == cls))) |
| 1857 | retval = PyClass_IsSubclass(derived, cls); |
| 1858 | } |
| 1859 | |
| 1860 | return retval; |
| 1861 | } |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1862 | |
| 1863 | PyObject * |
| 1864 | PyObject_GetIter(PyObject *o) |
| 1865 | { |
| 1866 | PyTypeObject *t = o->ob_type; |
| 1867 | getiterfunc f = NULL; |
| 1868 | if (PyType_HasFeature(t, Py_TPFLAGS_HAVE_ITER)) |
| 1869 | f = t->tp_iter; |
| 1870 | if (f == NULL) { |
| 1871 | if (PySequence_Check(o)) |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 1872 | return PySeqIter_New(o); |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1873 | PyErr_SetString(PyExc_TypeError, "iter() of non-sequence"); |
| 1874 | return NULL; |
| 1875 | } |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 1876 | else { |
| 1877 | PyObject *res = (*f)(o); |
| 1878 | if (res != NULL && !PyIter_Check(res)) { |
| 1879 | PyErr_Format(PyExc_TypeError, |
| 1880 | "iter() returned non-iterator " |
| 1881 | "of type '%.100s'", |
| 1882 | res->ob_type->tp_name); |
| 1883 | Py_DECREF(res); |
| 1884 | res = NULL; |
| 1885 | } |
| 1886 | return res; |
| 1887 | } |
| 1888 | } |
| 1889 | |
Tim Peters | f4848da | 2001-05-05 00:14:56 +0000 | [diff] [blame] | 1890 | /* Return next item. |
| 1891 | * If an error occurs, return NULL. PyErr_Occurred() will be true. |
| 1892 | * If the iteration terminates normally, return NULL and clear the |
| 1893 | * PyExc_StopIteration exception (if it was set). PyErr_Occurred() |
| 1894 | * will be false. |
| 1895 | * Else return the next object. PyErr_Occurred() will be false. |
| 1896 | */ |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 1897 | PyObject * |
| 1898 | PyIter_Next(PyObject *iter) |
| 1899 | { |
Tim Peters | f4848da | 2001-05-05 00:14:56 +0000 | [diff] [blame] | 1900 | PyObject *result; |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 1901 | if (!PyIter_Check(iter)) { |
| 1902 | PyErr_Format(PyExc_TypeError, |
| 1903 | "'%.100s' object is not an iterator", |
| 1904 | iter->ob_type->tp_name); |
| 1905 | return NULL; |
| 1906 | } |
Tim Peters | f4848da | 2001-05-05 00:14:56 +0000 | [diff] [blame] | 1907 | result = (*iter->ob_type->tp_iternext)(iter); |
| 1908 | if (result == NULL && |
| 1909 | PyErr_Occurred() && |
| 1910 | PyErr_ExceptionMatches(PyExc_StopIteration)) |
| 1911 | PyErr_Clear(); |
| 1912 | return result; |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1913 | } |