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 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 3 | #include "Python.h" |
Guido van Rossum | fa0b6ab | 1998-05-22 15:23:36 +0000 | [diff] [blame] | 4 | #include <ctype.h> |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 5 | #include "structmember.h" /* we need the offsetof() macro from there */ |
Tim Peters | 64b5ce3 | 2001-09-10 20:52:51 +0000 | [diff] [blame] | 6 | #include "longintrepr.h" |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 7 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 8 | |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 9 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 10 | /* Shorthands to return certain errors */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 11 | |
| 12 | static PyObject * |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 13 | type_error(const char *msg, PyObject *obj) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 14 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 15 | PyErr_Format(PyExc_TypeError, msg, obj->ob_type->tp_name); |
| 16 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 17 | } |
| 18 | |
Guido van Rossum | 052b7e1 | 1996-11-11 15:08:19 +0000 | [diff] [blame] | 19 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 20 | null_error(void) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 21 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 22 | if (!PyErr_Occurred()) |
| 23 | PyErr_SetString(PyExc_SystemError, |
| 24 | "null argument to internal routine"); |
| 25 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 26 | } |
| 27 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 28 | /* Operations on any object */ |
| 29 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 30 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 31 | PyObject_Type(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 32 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 33 | PyObject *v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 34 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 35 | if (o == NULL) |
| 36 | return null_error(); |
| 37 | v = (PyObject *)o->ob_type; |
| 38 | Py_INCREF(v); |
| 39 | return v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 40 | } |
| 41 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 42 | Py_ssize_t |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 43 | PyObject_Size(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 44 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 45 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 46 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 47 | if (o == NULL) { |
| 48 | null_error(); |
| 49 | return -1; |
| 50 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 51 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 52 | m = o->ob_type->tp_as_sequence; |
| 53 | if (m && m->sq_length) |
| 54 | return m->sq_length(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 55 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 56 | return PyMapping_Size(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 57 | } |
| 58 | |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 59 | #undef PyObject_Length |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 60 | Py_ssize_t |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 61 | PyObject_Length(PyObject *o) |
| 62 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 63 | return PyObject_Size(o); |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 64 | } |
| 65 | #define PyObject_Length PyObject_Size |
| 66 | |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 67 | int |
| 68 | _PyObject_HasLen(PyObject *o) { |
| 69 | return (Py_TYPE(o)->tp_as_sequence && Py_TYPE(o)->tp_as_sequence->sq_length) || |
| 70 | (Py_TYPE(o)->tp_as_mapping && Py_TYPE(o)->tp_as_mapping->mp_length); |
| 71 | } |
Raymond Hettinger | 6b27cda | 2005-09-24 21:23:05 +0000 | [diff] [blame] | 72 | |
Christian Heimes | 255f53b | 2007-12-08 15:33:56 +0000 | [diff] [blame] | 73 | /* The length hint function returns a non-negative value from o.__len__() |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 74 | or o.__length_hint__(). If those methods aren't found. If one of the calls |
| 75 | fails this function returns -1. |
Christian Heimes | 255f53b | 2007-12-08 15:33:56 +0000 | [diff] [blame] | 76 | */ |
| 77 | |
| 78 | Py_ssize_t |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 79 | PyObject_LengthHint(PyObject *o, Py_ssize_t defaultvalue) |
Christian Heimes | 255f53b | 2007-12-08 15:33:56 +0000 | [diff] [blame] | 80 | { |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 81 | _Py_IDENTIFIER(__length_hint__); |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 82 | Py_ssize_t res = PyObject_Length(o); |
| 83 | if (res < 0 && PyErr_Occurred()) { |
| 84 | if (!PyErr_ExceptionMatches(PyExc_TypeError)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 85 | return -1; |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 86 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 87 | PyErr_Clear(); |
| 88 | } |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 89 | else { |
| 90 | return res; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 91 | } |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 92 | PyObject *hint = _PyObject_LookupSpecial(o, &PyId___length_hint__); |
| 93 | if (hint == NULL) { |
| 94 | if (PyErr_Occurred()) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 95 | return -1; |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 96 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 97 | return defaultvalue; |
| 98 | } |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 99 | PyObject *result = PyObject_CallFunctionObjArgs(hint, NULL); |
| 100 | Py_DECREF(hint); |
| 101 | if (result == NULL) { |
| 102 | if (PyErr_ExceptionMatches(PyExc_TypeError)) { |
| 103 | PyErr_Clear(); |
| 104 | return defaultvalue; |
| 105 | } |
| 106 | return -1; |
| 107 | } |
| 108 | else if (result == Py_NotImplemented) { |
| 109 | Py_DECREF(result); |
| 110 | return defaultvalue; |
| 111 | } |
| 112 | if (!PyLong_Check(result)) { |
| 113 | PyErr_Format(PyExc_TypeError, "Length hint must be an integer, not %s", |
| 114 | Py_TYPE(result)->tp_name); |
| 115 | Py_DECREF(result); |
| 116 | return -1; |
| 117 | } |
| 118 | defaultvalue = PyLong_AsSsize_t(result); |
| 119 | Py_DECREF(result); |
| 120 | if (defaultvalue < 0 && PyErr_Occurred()) { |
| 121 | return -1; |
| 122 | } |
| 123 | if (defaultvalue < 0) { |
| 124 | PyErr_Format(PyExc_ValueError, "__length_hint__() should return >= 0"); |
| 125 | return -1; |
| 126 | } |
| 127 | return defaultvalue; |
Raymond Hettinger | 6b27cda | 2005-09-24 21:23:05 +0000 | [diff] [blame] | 128 | } |
| 129 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 130 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 131 | PyObject_GetItem(PyObject *o, PyObject *key) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 132 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 133 | PyMappingMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 134 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 135 | if (o == NULL || key == NULL) |
| 136 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 137 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 138 | m = o->ob_type->tp_as_mapping; |
| 139 | if (m && m->mp_subscript) |
| 140 | return m->mp_subscript(o, key); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 141 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 142 | if (o->ob_type->tp_as_sequence) { |
| 143 | if (PyIndex_Check(key)) { |
| 144 | Py_ssize_t key_value; |
| 145 | key_value = PyNumber_AsSsize_t(key, PyExc_IndexError); |
| 146 | if (key_value == -1 && PyErr_Occurred()) |
| 147 | return NULL; |
| 148 | return PySequence_GetItem(o, key_value); |
| 149 | } |
| 150 | else if (o->ob_type->tp_as_sequence->sq_item) |
| 151 | return type_error("sequence index must " |
| 152 | "be integer, not '%.200s'", key); |
| 153 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 154 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 155 | return type_error("'%.200s' object is not subscriptable", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 159 | PyObject_SetItem(PyObject *o, PyObject *key, PyObject *value) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 160 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 161 | PyMappingMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 162 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 163 | if (o == NULL || key == NULL || value == NULL) { |
| 164 | null_error(); |
| 165 | return -1; |
| 166 | } |
| 167 | m = o->ob_type->tp_as_mapping; |
| 168 | if (m && m->mp_ass_subscript) |
| 169 | return m->mp_ass_subscript(o, key, value); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 170 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 171 | if (o->ob_type->tp_as_sequence) { |
| 172 | if (PyIndex_Check(key)) { |
| 173 | Py_ssize_t key_value; |
| 174 | key_value = PyNumber_AsSsize_t(key, PyExc_IndexError); |
| 175 | if (key_value == -1 && PyErr_Occurred()) |
| 176 | return -1; |
| 177 | return PySequence_SetItem(o, key_value, value); |
| 178 | } |
| 179 | else if (o->ob_type->tp_as_sequence->sq_ass_item) { |
| 180 | type_error("sequence index must be " |
| 181 | "integer, not '%.200s'", key); |
| 182 | return -1; |
| 183 | } |
| 184 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 185 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 186 | type_error("'%.200s' object does not support item assignment", o); |
| 187 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 188 | } |
| 189 | |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 190 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 191 | PyObject_DelItem(PyObject *o, PyObject *key) |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 192 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 193 | PyMappingMethods *m; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 194 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 195 | if (o == NULL || key == NULL) { |
| 196 | null_error(); |
| 197 | return -1; |
| 198 | } |
| 199 | m = o->ob_type->tp_as_mapping; |
| 200 | if (m && m->mp_ass_subscript) |
| 201 | return m->mp_ass_subscript(o, key, (PyObject*)NULL); |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 202 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 203 | if (o->ob_type->tp_as_sequence) { |
| 204 | if (PyIndex_Check(key)) { |
| 205 | Py_ssize_t key_value; |
| 206 | key_value = PyNumber_AsSsize_t(key, PyExc_IndexError); |
| 207 | if (key_value == -1 && PyErr_Occurred()) |
| 208 | return -1; |
| 209 | return PySequence_DelItem(o, key_value); |
| 210 | } |
| 211 | else if (o->ob_type->tp_as_sequence->sq_ass_item) { |
| 212 | type_error("sequence index must be " |
| 213 | "integer, not '%.200s'", key); |
| 214 | return -1; |
| 215 | } |
| 216 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 217 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 218 | type_error("'%.200s' object does not support item deletion", o); |
| 219 | return -1; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 220 | } |
| 221 | |
Martin v. Löwis | b0d71d0 | 2002-01-05 10:50:30 +0000 | [diff] [blame] | 222 | int |
| 223 | PyObject_DelItemString(PyObject *o, char *key) |
| 224 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 225 | PyObject *okey; |
| 226 | int ret; |
Martin v. Löwis | b0d71d0 | 2002-01-05 10:50:30 +0000 | [diff] [blame] | 227 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 228 | if (o == NULL || key == NULL) { |
| 229 | null_error(); |
| 230 | return -1; |
| 231 | } |
| 232 | okey = PyUnicode_FromString(key); |
| 233 | if (okey == NULL) |
| 234 | return -1; |
| 235 | ret = PyObject_DelItem(o, okey); |
| 236 | Py_DECREF(okey); |
| 237 | return ret; |
Martin v. Löwis | b0d71d0 | 2002-01-05 10:50:30 +0000 | [diff] [blame] | 238 | } |
| 239 | |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 240 | /* We release the buffer right after use of this function which could |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 241 | cause issues later on. Don't use these functions in new code. |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 242 | */ |
Thomas Wouters | 73e5a5b | 2006-06-08 15:35:45 +0000 | [diff] [blame] | 243 | int |
| 244 | PyObject_AsCharBuffer(PyObject *obj, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 245 | const char **buffer, |
| 246 | Py_ssize_t *buffer_len) |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 247 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 248 | PyBufferProcs *pb; |
| 249 | Py_buffer view; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 250 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 251 | if (obj == NULL || buffer == NULL || buffer_len == NULL) { |
| 252 | null_error(); |
| 253 | return -1; |
| 254 | } |
| 255 | pb = obj->ob_type->tp_as_buffer; |
| 256 | if (pb == NULL || pb->bf_getbuffer == NULL) { |
| 257 | PyErr_SetString(PyExc_TypeError, |
Victor Stinner | f2a9421 | 2011-05-30 23:21:30 +0200 | [diff] [blame] | 258 | "expected bytes, bytearray " |
| 259 | "or buffer compatible object"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 260 | return -1; |
| 261 | } |
| 262 | if ((*pb->bf_getbuffer)(obj, &view, PyBUF_SIMPLE)) return -1; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 263 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 264 | *buffer = view.buf; |
| 265 | *buffer_len = view.len; |
| 266 | if (pb->bf_releasebuffer != NULL) |
| 267 | (*pb->bf_releasebuffer)(obj, &view); |
| 268 | Py_XDECREF(view.obj); |
| 269 | return 0; |
Jeremy Hylton | 89c3a22 | 2001-11-09 21:59:42 +0000 | [diff] [blame] | 270 | } |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 271 | |
Jeremy Hylton | 89c3a22 | 2001-11-09 21:59:42 +0000 | [diff] [blame] | 272 | int |
| 273 | PyObject_CheckReadBuffer(PyObject *obj) |
| 274 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 275 | PyBufferProcs *pb = obj->ob_type->tp_as_buffer; |
| 276 | Py_buffer view; |
Jeremy Hylton | 89c3a22 | 2001-11-09 21:59:42 +0000 | [diff] [blame] | 277 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 278 | if (pb == NULL || |
| 279 | pb->bf_getbuffer == NULL) |
| 280 | return 0; |
| 281 | if ((*pb->bf_getbuffer)(obj, &view, PyBUF_SIMPLE) == -1) { |
| 282 | PyErr_Clear(); |
| 283 | return 0; |
| 284 | } |
| 285 | PyBuffer_Release(&view); |
| 286 | return 1; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 287 | } |
| 288 | |
| 289 | int PyObject_AsReadBuffer(PyObject *obj, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 290 | const void **buffer, |
| 291 | Py_ssize_t *buffer_len) |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 292 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 293 | PyBufferProcs *pb; |
| 294 | Py_buffer view; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 295 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 296 | if (obj == NULL || buffer == NULL || buffer_len == NULL) { |
| 297 | null_error(); |
| 298 | return -1; |
| 299 | } |
| 300 | pb = obj->ob_type->tp_as_buffer; |
| 301 | if (pb == NULL || |
| 302 | pb->bf_getbuffer == NULL) { |
| 303 | PyErr_SetString(PyExc_TypeError, |
| 304 | "expected an object with a buffer interface"); |
| 305 | return -1; |
| 306 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 307 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 308 | if ((*pb->bf_getbuffer)(obj, &view, PyBUF_SIMPLE)) return -1; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 309 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 310 | *buffer = view.buf; |
| 311 | *buffer_len = view.len; |
| 312 | if (pb->bf_releasebuffer != NULL) |
| 313 | (*pb->bf_releasebuffer)(obj, &view); |
| 314 | Py_XDECREF(view.obj); |
| 315 | return 0; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | int PyObject_AsWriteBuffer(PyObject *obj, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 319 | void **buffer, |
| 320 | Py_ssize_t *buffer_len) |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 321 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 322 | PyBufferProcs *pb; |
| 323 | Py_buffer view; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 324 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 325 | if (obj == NULL || buffer == NULL || buffer_len == NULL) { |
| 326 | null_error(); |
| 327 | return -1; |
| 328 | } |
| 329 | pb = obj->ob_type->tp_as_buffer; |
| 330 | if (pb == NULL || |
| 331 | pb->bf_getbuffer == NULL || |
| 332 | ((*pb->bf_getbuffer)(obj, &view, PyBUF_WRITABLE) != 0)) { |
| 333 | PyErr_SetString(PyExc_TypeError, |
| 334 | "expected an object with a writable buffer interface"); |
| 335 | return -1; |
| 336 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 337 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 338 | *buffer = view.buf; |
| 339 | *buffer_len = view.len; |
| 340 | if (pb->bf_releasebuffer != NULL) |
| 341 | (*pb->bf_releasebuffer)(obj, &view); |
| 342 | Py_XDECREF(view.obj); |
| 343 | return 0; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 344 | } |
| 345 | |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 346 | /* Buffer C-API for Python 3.0 */ |
| 347 | |
| 348 | int |
Travis E. Oliphant | 8ae62b6 | 2007-09-23 02:00:13 +0000 | [diff] [blame] | 349 | PyObject_GetBuffer(PyObject *obj, Py_buffer *view, int flags) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 350 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 351 | if (!PyObject_CheckBuffer(obj)) { |
| 352 | PyErr_Format(PyExc_TypeError, |
Victor Stinner | 0a5f65a | 2011-03-22 01:09:21 +0100 | [diff] [blame] | 353 | "'%.100s' does not support the buffer interface", |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 354 | Py_TYPE(obj)->tp_name); |
| 355 | return -1; |
| 356 | } |
| 357 | return (*(obj->ob_type->tp_as_buffer->bf_getbuffer))(obj, view, flags); |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 358 | } |
| 359 | |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 360 | static int |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 361 | _IsFortranContiguous(const Py_buffer *view) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 362 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 363 | Py_ssize_t sd, dim; |
| 364 | int i; |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 365 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 366 | if (view->ndim == 0) return 1; |
| 367 | if (view->strides == NULL) return (view->ndim == 1); |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 368 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 369 | sd = view->itemsize; |
| 370 | if (view->ndim == 1) return (view->shape[0] == 1 || |
| 371 | sd == view->strides[0]); |
| 372 | for (i=0; i<view->ndim; i++) { |
| 373 | dim = view->shape[i]; |
| 374 | if (dim == 0) return 1; |
| 375 | if (view->strides[i] != sd) return 0; |
| 376 | sd *= dim; |
| 377 | } |
| 378 | return 1; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | static int |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 382 | _IsCContiguous(const Py_buffer *view) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 383 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 384 | Py_ssize_t sd, dim; |
| 385 | int i; |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 386 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 387 | if (view->ndim == 0) return 1; |
| 388 | if (view->strides == NULL) return 1; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 389 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 390 | sd = view->itemsize; |
| 391 | if (view->ndim == 1) return (view->shape[0] == 1 || |
| 392 | sd == view->strides[0]); |
| 393 | for (i=view->ndim-1; i>=0; i--) { |
| 394 | dim = view->shape[i]; |
| 395 | if (dim == 0) return 1; |
| 396 | if (view->strides[i] != sd) return 0; |
| 397 | sd *= dim; |
| 398 | } |
| 399 | return 1; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 400 | } |
| 401 | |
| 402 | int |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 403 | PyBuffer_IsContiguous(const Py_buffer *view, char order) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 404 | { |
| 405 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 406 | if (view->suboffsets != NULL) return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 407 | |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 408 | if (order == 'C') |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 409 | return _IsCContiguous(view); |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 410 | else if (order == 'F') |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 411 | return _IsFortranContiguous(view); |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 412 | else if (order == 'A') |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 413 | return (_IsCContiguous(view) || _IsFortranContiguous(view)); |
| 414 | return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 415 | } |
| 416 | |
| 417 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 418 | void* |
Travis E. Oliphant | 8ae62b6 | 2007-09-23 02:00:13 +0000 | [diff] [blame] | 419 | PyBuffer_GetPointer(Py_buffer *view, Py_ssize_t *indices) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 420 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 421 | char* pointer; |
| 422 | int i; |
| 423 | pointer = (char *)view->buf; |
| 424 | for (i = 0; i < view->ndim; i++) { |
| 425 | pointer += view->strides[i]*indices[i]; |
| 426 | if ((view->suboffsets != NULL) && (view->suboffsets[i] >= 0)) { |
| 427 | pointer = *((char**)pointer) + view->suboffsets[i]; |
| 428 | } |
| 429 | } |
| 430 | return (void*)pointer; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 431 | } |
| 432 | |
| 433 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 434 | void |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 435 | _Py_add_one_to_index_F(int nd, Py_ssize_t *index, const Py_ssize_t *shape) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 436 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 437 | int k; |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 438 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 439 | for (k=0; k<nd; k++) { |
| 440 | if (index[k] < shape[k]-1) { |
| 441 | index[k]++; |
| 442 | break; |
| 443 | } |
| 444 | else { |
| 445 | index[k] = 0; |
| 446 | } |
| 447 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 448 | } |
| 449 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 450 | void |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 451 | _Py_add_one_to_index_C(int nd, Py_ssize_t *index, const Py_ssize_t *shape) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 452 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 453 | int k; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 454 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 455 | for (k=nd-1; k>=0; k--) { |
| 456 | if (index[k] < shape[k]-1) { |
| 457 | index[k]++; |
| 458 | break; |
| 459 | } |
| 460 | else { |
| 461 | index[k] = 0; |
| 462 | } |
| 463 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 464 | } |
| 465 | |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 466 | int |
Travis E. Oliphant | 8ae62b6 | 2007-09-23 02:00:13 +0000 | [diff] [blame] | 467 | PyBuffer_FromContiguous(Py_buffer *view, void *buf, Py_ssize_t len, char fort) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 468 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 469 | int k; |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 470 | void (*addone)(int, Py_ssize_t *, const Py_ssize_t *); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 471 | Py_ssize_t *indices, elements; |
| 472 | char *src, *ptr; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 473 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 474 | if (len > view->len) { |
| 475 | len = view->len; |
| 476 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 477 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 478 | if (PyBuffer_IsContiguous(view, fort)) { |
| 479 | /* simplest copy is all that is needed */ |
| 480 | memcpy(view->buf, buf, len); |
| 481 | return 0; |
| 482 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 483 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 484 | /* Otherwise a more elaborate scheme is needed */ |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 485 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 486 | /* XXX(nnorwitz): need to check for overflow! */ |
| 487 | indices = (Py_ssize_t *)PyMem_Malloc(sizeof(Py_ssize_t)*(view->ndim)); |
| 488 | if (indices == NULL) { |
| 489 | PyErr_NoMemory(); |
| 490 | return -1; |
| 491 | } |
| 492 | for (k=0; k<view->ndim;k++) { |
| 493 | indices[k] = 0; |
| 494 | } |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 495 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 496 | if (fort == 'F') { |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 497 | addone = _Py_add_one_to_index_F; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 498 | } |
| 499 | else { |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 500 | addone = _Py_add_one_to_index_C; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 501 | } |
| 502 | src = buf; |
| 503 | /* XXX : This is not going to be the fastest code in the world |
| 504 | several optimizations are possible. |
| 505 | */ |
| 506 | elements = len / view->itemsize; |
| 507 | while (elements--) { |
| 508 | addone(view->ndim, indices, view->shape); |
| 509 | ptr = PyBuffer_GetPointer(view, indices); |
| 510 | memcpy(ptr, src, view->itemsize); |
| 511 | src += view->itemsize; |
| 512 | } |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 513 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 514 | PyMem_Free(indices); |
| 515 | return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 516 | } |
| 517 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 518 | int PyObject_CopyData(PyObject *dest, PyObject *src) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 519 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 520 | Py_buffer view_dest, view_src; |
| 521 | int k; |
| 522 | Py_ssize_t *indices, elements; |
| 523 | char *dptr, *sptr; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 524 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 525 | if (!PyObject_CheckBuffer(dest) || |
| 526 | !PyObject_CheckBuffer(src)) { |
| 527 | PyErr_SetString(PyExc_TypeError, |
| 528 | "both destination and source must have the "\ |
| 529 | "buffer interface"); |
| 530 | return -1; |
| 531 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 532 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 533 | if (PyObject_GetBuffer(dest, &view_dest, PyBUF_FULL) != 0) return -1; |
| 534 | if (PyObject_GetBuffer(src, &view_src, PyBUF_FULL_RO) != 0) { |
| 535 | PyBuffer_Release(&view_dest); |
| 536 | return -1; |
| 537 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 538 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 539 | if (view_dest.len < view_src.len) { |
| 540 | PyErr_SetString(PyExc_BufferError, |
| 541 | "destination is too small to receive data from source"); |
| 542 | PyBuffer_Release(&view_dest); |
| 543 | PyBuffer_Release(&view_src); |
| 544 | return -1; |
| 545 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 546 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 547 | if ((PyBuffer_IsContiguous(&view_dest, 'C') && |
| 548 | PyBuffer_IsContiguous(&view_src, 'C')) || |
| 549 | (PyBuffer_IsContiguous(&view_dest, 'F') && |
| 550 | PyBuffer_IsContiguous(&view_src, 'F'))) { |
| 551 | /* simplest copy is all that is needed */ |
| 552 | memcpy(view_dest.buf, view_src.buf, view_src.len); |
| 553 | PyBuffer_Release(&view_dest); |
| 554 | PyBuffer_Release(&view_src); |
| 555 | return 0; |
| 556 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 557 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 558 | /* Otherwise a more elaborate copy scheme is needed */ |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 559 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 560 | /* XXX(nnorwitz): need to check for overflow! */ |
| 561 | indices = (Py_ssize_t *)PyMem_Malloc(sizeof(Py_ssize_t)*view_src.ndim); |
| 562 | if (indices == NULL) { |
| 563 | PyErr_NoMemory(); |
| 564 | PyBuffer_Release(&view_dest); |
| 565 | PyBuffer_Release(&view_src); |
| 566 | return -1; |
| 567 | } |
| 568 | for (k=0; k<view_src.ndim;k++) { |
| 569 | indices[k] = 0; |
| 570 | } |
| 571 | elements = 1; |
| 572 | for (k=0; k<view_src.ndim; k++) { |
| 573 | /* XXX(nnorwitz): can this overflow? */ |
| 574 | elements *= view_src.shape[k]; |
| 575 | } |
| 576 | while (elements--) { |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 577 | _Py_add_one_to_index_C(view_src.ndim, indices, view_src.shape); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 578 | dptr = PyBuffer_GetPointer(&view_dest, indices); |
| 579 | sptr = PyBuffer_GetPointer(&view_src, indices); |
| 580 | memcpy(dptr, sptr, view_src.itemsize); |
| 581 | } |
| 582 | PyMem_Free(indices); |
| 583 | PyBuffer_Release(&view_dest); |
| 584 | PyBuffer_Release(&view_src); |
| 585 | return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 586 | } |
| 587 | |
| 588 | void |
| 589 | PyBuffer_FillContiguousStrides(int nd, Py_ssize_t *shape, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 590 | Py_ssize_t *strides, int itemsize, |
| 591 | char fort) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 592 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 593 | int k; |
| 594 | Py_ssize_t sd; |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 595 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 596 | sd = itemsize; |
| 597 | if (fort == 'F') { |
| 598 | for (k=0; k<nd; k++) { |
| 599 | strides[k] = sd; |
| 600 | sd *= shape[k]; |
| 601 | } |
| 602 | } |
| 603 | else { |
| 604 | for (k=nd-1; k>=0; k--) { |
| 605 | strides[k] = sd; |
| 606 | sd *= shape[k]; |
| 607 | } |
| 608 | } |
| 609 | return; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 610 | } |
| 611 | |
| 612 | int |
Martin v. Löwis | 423be95 | 2008-08-13 15:53:07 +0000 | [diff] [blame] | 613 | PyBuffer_FillInfo(Py_buffer *view, PyObject *obj, void *buf, Py_ssize_t len, |
Stefan Krah | 4e14174 | 2012-03-06 15:27:31 +0100 | [diff] [blame] | 614 | int readonly, int flags) |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 615 | { |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 616 | if (view == NULL) return 0; /* XXX why not -1? */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 617 | if (((flags & PyBUF_WRITABLE) == PyBUF_WRITABLE) && |
| 618 | (readonly == 1)) { |
| 619 | PyErr_SetString(PyExc_BufferError, |
| 620 | "Object is not writable."); |
| 621 | return -1; |
| 622 | } |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 623 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 624 | view->obj = obj; |
| 625 | if (obj) |
| 626 | Py_INCREF(obj); |
| 627 | view->buf = buf; |
| 628 | view->len = len; |
| 629 | view->readonly = readonly; |
| 630 | view->itemsize = 1; |
| 631 | view->format = NULL; |
| 632 | if ((flags & PyBUF_FORMAT) == PyBUF_FORMAT) |
| 633 | view->format = "B"; |
| 634 | view->ndim = 1; |
| 635 | view->shape = NULL; |
| 636 | if ((flags & PyBUF_ND) == PyBUF_ND) |
| 637 | view->shape = &(view->len); |
| 638 | view->strides = NULL; |
| 639 | if ((flags & PyBUF_STRIDES) == PyBUF_STRIDES) |
| 640 | view->strides = &(view->itemsize); |
| 641 | view->suboffsets = NULL; |
| 642 | view->internal = NULL; |
| 643 | return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 644 | } |
| 645 | |
Martin v. Löwis | 423be95 | 2008-08-13 15:53:07 +0000 | [diff] [blame] | 646 | void |
| 647 | PyBuffer_Release(Py_buffer *view) |
| 648 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 649 | PyObject *obj = view->obj; |
| 650 | if (obj && Py_TYPE(obj)->tp_as_buffer && Py_TYPE(obj)->tp_as_buffer->bf_releasebuffer) |
| 651 | Py_TYPE(obj)->tp_as_buffer->bf_releasebuffer(obj, view); |
| 652 | Py_XDECREF(obj); |
| 653 | view->obj = NULL; |
Martin v. Löwis | 423be95 | 2008-08-13 15:53:07 +0000 | [diff] [blame] | 654 | } |
| 655 | |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 656 | PyObject * |
| 657 | PyObject_Format(PyObject *obj, PyObject *format_spec) |
| 658 | { |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 659 | PyObject *meth; |
| 660 | PyObject *empty = NULL; |
| 661 | PyObject *result = NULL; |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 662 | _Py_IDENTIFIER(__format__); |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 663 | |
| 664 | /* If no format_spec is provided, use an empty string */ |
| 665 | if (format_spec == NULL) { |
Victor Stinner | 9d3b93b | 2011-11-22 02:27:30 +0100 | [diff] [blame] | 666 | empty = PyUnicode_New(0, 0); |
Benjamin Peterson | da2cf04 | 2010-06-05 00:45:37 +0000 | [diff] [blame] | 667 | format_spec = empty; |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 668 | } |
| 669 | |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 670 | /* Find the (unbound!) __format__ method (a borrowed reference) */ |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 671 | meth = _PyObject_LookupSpecial(obj, &PyId___format__); |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 672 | if (meth == NULL) { |
Benjamin Peterson | da2cf04 | 2010-06-05 00:45:37 +0000 | [diff] [blame] | 673 | if (!PyErr_Occurred()) |
| 674 | PyErr_Format(PyExc_TypeError, |
| 675 | "Type %.100s doesn't define __format__", |
| 676 | Py_TYPE(obj)->tp_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 677 | goto done; |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 678 | } |
| 679 | |
Benjamin Peterson | da2cf04 | 2010-06-05 00:45:37 +0000 | [diff] [blame] | 680 | /* And call it. */ |
| 681 | result = PyObject_CallFunctionObjArgs(meth, format_spec, NULL); |
Benjamin Peterson | 6f889ad3 | 2010-06-05 02:11:45 +0000 | [diff] [blame] | 682 | Py_DECREF(meth); |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 683 | |
| 684 | if (result && !PyUnicode_Check(result)) { |
Benjamin Peterson | da2cf04 | 2010-06-05 00:45:37 +0000 | [diff] [blame] | 685 | PyErr_SetString(PyExc_TypeError, |
| 686 | "__format__ method did not return string"); |
| 687 | Py_DECREF(result); |
| 688 | result = NULL; |
| 689 | goto done; |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | done: |
| 693 | Py_XDECREF(empty); |
| 694 | return result; |
| 695 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 696 | /* Operations on numbers */ |
| 697 | |
| 698 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 699 | PyNumber_Check(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 700 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 701 | return o && o->ob_type->tp_as_number && |
| 702 | (o->ob_type->tp_as_number->nb_int || |
| 703 | o->ob_type->tp_as_number->nb_float); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 704 | } |
| 705 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 706 | /* Binary operators */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 707 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 708 | #define NB_SLOT(x) offsetof(PyNumberMethods, x) |
| 709 | #define NB_BINOP(nb_methods, slot) \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 710 | (*(binaryfunc*)(& ((char*)nb_methods)[slot])) |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 711 | #define NB_TERNOP(nb_methods, slot) \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 712 | (*(ternaryfunc*)(& ((char*)nb_methods)[slot])) |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 713 | |
| 714 | /* |
| 715 | Calling scheme used for binary operations: |
| 716 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 717 | Order operations are tried until either a valid result or error: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 718 | w.op(v,w)[*], v.op(v,w), w.op(v,w) |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 719 | |
Guido van Rossum | 4bb1e36 | 2001-09-28 23:49:48 +0000 | [diff] [blame] | 720 | [*] only when v->ob_type != w->ob_type && w->ob_type is a subclass of |
| 721 | v->ob_type |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 722 | */ |
| 723 | |
| 724 | static PyObject * |
| 725 | binary_op1(PyObject *v, PyObject *w, const int op_slot) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 726 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 727 | PyObject *x; |
| 728 | binaryfunc slotv = NULL; |
| 729 | binaryfunc slotw = NULL; |
Guido van Rossum | 4bb1e36 | 2001-09-28 23:49:48 +0000 | [diff] [blame] | 730 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 731 | if (v->ob_type->tp_as_number != NULL) |
| 732 | slotv = NB_BINOP(v->ob_type->tp_as_number, op_slot); |
| 733 | if (w->ob_type != v->ob_type && |
| 734 | w->ob_type->tp_as_number != NULL) { |
| 735 | slotw = NB_BINOP(w->ob_type->tp_as_number, op_slot); |
| 736 | if (slotw == slotv) |
| 737 | slotw = NULL; |
| 738 | } |
| 739 | if (slotv) { |
| 740 | if (slotw && PyType_IsSubtype(w->ob_type, v->ob_type)) { |
| 741 | x = slotw(v, w); |
| 742 | if (x != Py_NotImplemented) |
| 743 | return x; |
| 744 | Py_DECREF(x); /* can't do it */ |
| 745 | slotw = NULL; |
| 746 | } |
| 747 | x = slotv(v, w); |
| 748 | if (x != Py_NotImplemented) |
| 749 | return x; |
| 750 | Py_DECREF(x); /* can't do it */ |
| 751 | } |
| 752 | if (slotw) { |
| 753 | x = slotw(v, w); |
| 754 | if (x != Py_NotImplemented) |
| 755 | return x; |
| 756 | Py_DECREF(x); /* can't do it */ |
| 757 | } |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 758 | Py_RETURN_NOTIMPLEMENTED; |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 759 | } |
Guido van Rossum | 7766091 | 2002-04-16 16:32:50 +0000 | [diff] [blame] | 760 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 761 | static PyObject * |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 762 | binop_type_error(PyObject *v, PyObject *w, const char *op_name) |
| 763 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 764 | PyErr_Format(PyExc_TypeError, |
| 765 | "unsupported operand type(s) for %.100s: " |
| 766 | "'%.100s' and '%.100s'", |
| 767 | op_name, |
| 768 | v->ob_type->tp_name, |
| 769 | w->ob_type->tp_name); |
| 770 | return NULL; |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 771 | } |
| 772 | |
| 773 | static PyObject * |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 774 | binary_op(PyObject *v, PyObject *w, const int op_slot, const char *op_name) |
| 775 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 776 | PyObject *result = binary_op1(v, w, op_slot); |
| 777 | if (result == Py_NotImplemented) { |
| 778 | Py_DECREF(result); |
| 779 | return binop_type_error(v, w, op_name); |
| 780 | } |
| 781 | return result; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 782 | } |
| 783 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 784 | |
| 785 | /* |
| 786 | Calling scheme used for ternary operations: |
| 787 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 788 | Order operations are tried until either a valid result or error: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 789 | v.op(v,w,z), w.op(v,w,z), z.op(v,w,z) |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 790 | */ |
| 791 | |
| 792 | static PyObject * |
| 793 | ternary_op(PyObject *v, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 794 | PyObject *w, |
| 795 | PyObject *z, |
| 796 | const int op_slot, |
| 797 | const char *op_name) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 798 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 799 | PyNumberMethods *mv, *mw, *mz; |
| 800 | PyObject *x = NULL; |
| 801 | ternaryfunc slotv = NULL; |
| 802 | ternaryfunc slotw = NULL; |
| 803 | ternaryfunc slotz = NULL; |
Guido van Rossum | 7766091 | 2002-04-16 16:32:50 +0000 | [diff] [blame] | 804 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 805 | mv = v->ob_type->tp_as_number; |
| 806 | mw = w->ob_type->tp_as_number; |
| 807 | if (mv != NULL) |
| 808 | slotv = NB_TERNOP(mv, op_slot); |
| 809 | if (w->ob_type != v->ob_type && |
| 810 | mw != NULL) { |
| 811 | slotw = NB_TERNOP(mw, op_slot); |
| 812 | if (slotw == slotv) |
| 813 | slotw = NULL; |
| 814 | } |
| 815 | if (slotv) { |
| 816 | if (slotw && PyType_IsSubtype(w->ob_type, v->ob_type)) { |
| 817 | x = slotw(v, w, z); |
| 818 | if (x != Py_NotImplemented) |
| 819 | return x; |
| 820 | Py_DECREF(x); /* can't do it */ |
| 821 | slotw = NULL; |
| 822 | } |
| 823 | x = slotv(v, w, z); |
| 824 | if (x != Py_NotImplemented) |
| 825 | return x; |
| 826 | Py_DECREF(x); /* can't do it */ |
| 827 | } |
| 828 | if (slotw) { |
| 829 | x = slotw(v, w, z); |
| 830 | if (x != Py_NotImplemented) |
| 831 | return x; |
| 832 | Py_DECREF(x); /* can't do it */ |
| 833 | } |
| 834 | mz = z->ob_type->tp_as_number; |
| 835 | if (mz != NULL) { |
| 836 | slotz = NB_TERNOP(mz, op_slot); |
| 837 | if (slotz == slotv || slotz == slotw) |
| 838 | slotz = NULL; |
| 839 | if (slotz) { |
| 840 | x = slotz(v, w, z); |
| 841 | if (x != Py_NotImplemented) |
| 842 | return x; |
| 843 | Py_DECREF(x); /* can't do it */ |
| 844 | } |
| 845 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 846 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 847 | if (z == Py_None) |
| 848 | PyErr_Format( |
| 849 | PyExc_TypeError, |
| 850 | "unsupported operand type(s) for ** or pow(): " |
| 851 | "'%.100s' and '%.100s'", |
| 852 | v->ob_type->tp_name, |
| 853 | w->ob_type->tp_name); |
| 854 | else |
| 855 | PyErr_Format( |
| 856 | PyExc_TypeError, |
| 857 | "unsupported operand type(s) for pow(): " |
| 858 | "'%.100s', '%.100s', '%.100s'", |
| 859 | v->ob_type->tp_name, |
| 860 | w->ob_type->tp_name, |
| 861 | z->ob_type->tp_name); |
| 862 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 863 | } |
| 864 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 865 | #define BINARY_FUNC(func, op, op_name) \ |
| 866 | PyObject * \ |
| 867 | func(PyObject *v, PyObject *w) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 868 | return binary_op(v, w, NB_SLOT(op), op_name); \ |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 869 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 870 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 871 | BINARY_FUNC(PyNumber_Or, nb_or, "|") |
| 872 | BINARY_FUNC(PyNumber_Xor, nb_xor, "^") |
| 873 | BINARY_FUNC(PyNumber_And, nb_and, "&") |
| 874 | BINARY_FUNC(PyNumber_Lshift, nb_lshift, "<<") |
| 875 | BINARY_FUNC(PyNumber_Rshift, nb_rshift, ">>") |
| 876 | BINARY_FUNC(PyNumber_Subtract, nb_subtract, "-") |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 877 | BINARY_FUNC(PyNumber_Divmod, nb_divmod, "divmod()") |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 878 | |
| 879 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 880 | PyNumber_Add(PyObject *v, PyObject *w) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 881 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 882 | PyObject *result = binary_op1(v, w, NB_SLOT(nb_add)); |
| 883 | if (result == Py_NotImplemented) { |
| 884 | PySequenceMethods *m = v->ob_type->tp_as_sequence; |
| 885 | Py_DECREF(result); |
| 886 | if (m && m->sq_concat) { |
| 887 | return (*m->sq_concat)(v, w); |
| 888 | } |
| 889 | result = binop_type_error(v, w, "+"); |
| 890 | } |
| 891 | return result; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 892 | } |
| 893 | |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 894 | static PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 895 | sequence_repeat(ssizeargfunc repeatfunc, PyObject *seq, PyObject *n) |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 896 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 897 | Py_ssize_t count; |
| 898 | if (PyIndex_Check(n)) { |
| 899 | count = PyNumber_AsSsize_t(n, PyExc_OverflowError); |
| 900 | if (count == -1 && PyErr_Occurred()) |
| 901 | return NULL; |
| 902 | } |
| 903 | else { |
| 904 | return type_error("can't multiply sequence by " |
| 905 | "non-int of type '%.200s'", n); |
| 906 | } |
| 907 | return (*repeatfunc)(seq, count); |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | PyObject * |
| 911 | PyNumber_Multiply(PyObject *v, PyObject *w) |
| 912 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 913 | PyObject *result = binary_op1(v, w, NB_SLOT(nb_multiply)); |
| 914 | if (result == Py_NotImplemented) { |
| 915 | PySequenceMethods *mv = v->ob_type->tp_as_sequence; |
| 916 | PySequenceMethods *mw = w->ob_type->tp_as_sequence; |
| 917 | Py_DECREF(result); |
| 918 | if (mv && mv->sq_repeat) { |
| 919 | return sequence_repeat(mv->sq_repeat, v, w); |
| 920 | } |
| 921 | else if (mw && mw->sq_repeat) { |
| 922 | return sequence_repeat(mw->sq_repeat, w, v); |
| 923 | } |
| 924 | result = binop_type_error(v, w, "*"); |
| 925 | } |
| 926 | return result; |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 927 | } |
| 928 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 929 | PyObject * |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 930 | PyNumber_FloorDivide(PyObject *v, PyObject *w) |
| 931 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 932 | return binary_op(v, w, NB_SLOT(nb_floor_divide), "//"); |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 933 | } |
| 934 | |
| 935 | PyObject * |
| 936 | PyNumber_TrueDivide(PyObject *v, PyObject *w) |
| 937 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 938 | return binary_op(v, w, NB_SLOT(nb_true_divide), "/"); |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 939 | } |
| 940 | |
| 941 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 942 | PyNumber_Remainder(PyObject *v, PyObject *w) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 943 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 944 | return binary_op(v, w, NB_SLOT(nb_remainder), "%"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 945 | } |
| 946 | |
| 947 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 948 | PyNumber_Power(PyObject *v, PyObject *w, PyObject *z) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 949 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 950 | 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] | 951 | } |
| 952 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 953 | /* Binary in-place operators */ |
| 954 | |
| 955 | /* The in-place operators are defined to fall back to the 'normal', |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 956 | 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] | 957 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 958 | - If the left hand object has the appropriate struct members, and |
| 959 | they are filled, call the appropriate function and return the |
| 960 | result. No coercion is done on the arguments; the left-hand object |
| 961 | is the one the operation is performed on, and it's up to the |
| 962 | function to deal with the right-hand object. |
Guido van Rossum | 7766091 | 2002-04-16 16:32:50 +0000 | [diff] [blame] | 963 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 964 | - Otherwise, in-place modification is not supported. Handle it exactly as |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 965 | a non in-place operation of the same kind. |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 966 | |
| 967 | */ |
| 968 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 969 | static PyObject * |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 970 | binary_iop1(PyObject *v, PyObject *w, const int iop_slot, const int op_slot) |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 971 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 972 | PyNumberMethods *mv = v->ob_type->tp_as_number; |
| 973 | if (mv != NULL) { |
| 974 | binaryfunc slot = NB_BINOP(mv, iop_slot); |
| 975 | if (slot) { |
| 976 | PyObject *x = (slot)(v, w); |
| 977 | if (x != Py_NotImplemented) { |
| 978 | return x; |
| 979 | } |
| 980 | Py_DECREF(x); |
| 981 | } |
| 982 | } |
| 983 | return binary_op1(v, w, op_slot); |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 984 | } |
| 985 | |
| 986 | static PyObject * |
| 987 | binary_iop(PyObject *v, PyObject *w, const int iop_slot, const int op_slot, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 988 | const char *op_name) |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 989 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 990 | PyObject *result = binary_iop1(v, w, iop_slot, op_slot); |
| 991 | if (result == Py_NotImplemented) { |
| 992 | Py_DECREF(result); |
| 993 | return binop_type_error(v, w, op_name); |
| 994 | } |
| 995 | return result; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 996 | } |
| 997 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 998 | #define INPLACE_BINOP(func, iop, op, op_name) \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 999 | PyObject * \ |
| 1000 | func(PyObject *v, PyObject *w) { \ |
| 1001 | return binary_iop(v, w, NB_SLOT(iop), NB_SLOT(op), op_name); \ |
| 1002 | } |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1003 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1004 | INPLACE_BINOP(PyNumber_InPlaceOr, nb_inplace_or, nb_or, "|=") |
| 1005 | INPLACE_BINOP(PyNumber_InPlaceXor, nb_inplace_xor, nb_xor, "^=") |
| 1006 | INPLACE_BINOP(PyNumber_InPlaceAnd, nb_inplace_and, nb_and, "&=") |
| 1007 | INPLACE_BINOP(PyNumber_InPlaceLshift, nb_inplace_lshift, nb_lshift, "<<=") |
| 1008 | INPLACE_BINOP(PyNumber_InPlaceRshift, nb_inplace_rshift, nb_rshift, ">>=") |
| 1009 | INPLACE_BINOP(PyNumber_InPlaceSubtract, nb_inplace_subtract, nb_subtract, "-=") |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1010 | |
| 1011 | PyObject * |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 1012 | PyNumber_InPlaceFloorDivide(PyObject *v, PyObject *w) |
| 1013 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1014 | return binary_iop(v, w, NB_SLOT(nb_inplace_floor_divide), |
| 1015 | NB_SLOT(nb_floor_divide), "//="); |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 1016 | } |
| 1017 | |
| 1018 | PyObject * |
| 1019 | PyNumber_InPlaceTrueDivide(PyObject *v, PyObject *w) |
| 1020 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1021 | return binary_iop(v, w, NB_SLOT(nb_inplace_true_divide), |
| 1022 | NB_SLOT(nb_true_divide), "/="); |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 1023 | } |
| 1024 | |
| 1025 | PyObject * |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1026 | PyNumber_InPlaceAdd(PyObject *v, PyObject *w) |
| 1027 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1028 | PyObject *result = binary_iop1(v, w, NB_SLOT(nb_inplace_add), |
| 1029 | NB_SLOT(nb_add)); |
| 1030 | if (result == Py_NotImplemented) { |
| 1031 | PySequenceMethods *m = v->ob_type->tp_as_sequence; |
| 1032 | Py_DECREF(result); |
| 1033 | if (m != NULL) { |
| 1034 | binaryfunc f = NULL; |
| 1035 | f = m->sq_inplace_concat; |
| 1036 | if (f == NULL) |
| 1037 | f = m->sq_concat; |
| 1038 | if (f != NULL) |
| 1039 | return (*f)(v, w); |
| 1040 | } |
| 1041 | result = binop_type_error(v, w, "+="); |
| 1042 | } |
| 1043 | return result; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1044 | } |
| 1045 | |
| 1046 | PyObject * |
| 1047 | PyNumber_InPlaceMultiply(PyObject *v, PyObject *w) |
| 1048 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1049 | PyObject *result = binary_iop1(v, w, NB_SLOT(nb_inplace_multiply), |
| 1050 | NB_SLOT(nb_multiply)); |
| 1051 | if (result == Py_NotImplemented) { |
| 1052 | ssizeargfunc f = NULL; |
| 1053 | PySequenceMethods *mv = v->ob_type->tp_as_sequence; |
| 1054 | PySequenceMethods *mw = w->ob_type->tp_as_sequence; |
| 1055 | Py_DECREF(result); |
| 1056 | if (mv != NULL) { |
| 1057 | f = mv->sq_inplace_repeat; |
| 1058 | if (f == NULL) |
| 1059 | f = mv->sq_repeat; |
| 1060 | if (f != NULL) |
| 1061 | return sequence_repeat(f, v, w); |
| 1062 | } |
| 1063 | else if (mw != NULL) { |
| 1064 | /* Note that the right hand operand should not be |
| 1065 | * mutated in this case so sq_inplace_repeat is not |
| 1066 | * used. */ |
| 1067 | if (mw->sq_repeat) |
| 1068 | return sequence_repeat(mw->sq_repeat, w, v); |
| 1069 | } |
| 1070 | result = binop_type_error(v, w, "*="); |
| 1071 | } |
| 1072 | return result; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1073 | } |
| 1074 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1075 | PyObject * |
| 1076 | PyNumber_InPlaceRemainder(PyObject *v, PyObject *w) |
| 1077 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1078 | return binary_iop(v, w, NB_SLOT(nb_inplace_remainder), |
| 1079 | NB_SLOT(nb_remainder), "%="); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1080 | } |
| 1081 | |
| 1082 | PyObject * |
| 1083 | PyNumber_InPlacePower(PyObject *v, PyObject *w, PyObject *z) |
| 1084 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1085 | if (v->ob_type->tp_as_number && |
| 1086 | v->ob_type->tp_as_number->nb_inplace_power != NULL) { |
| 1087 | return ternary_op(v, w, z, NB_SLOT(nb_inplace_power), "**="); |
| 1088 | } |
| 1089 | else { |
| 1090 | return ternary_op(v, w, z, NB_SLOT(nb_power), "**="); |
| 1091 | } |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1092 | } |
| 1093 | |
| 1094 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1095 | /* Unary operators and functions */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1096 | |
| 1097 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1098 | PyNumber_Negative(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1099 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1100 | PyNumberMethods *m; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1101 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1102 | if (o == NULL) |
| 1103 | return null_error(); |
| 1104 | m = o->ob_type->tp_as_number; |
| 1105 | if (m && m->nb_negative) |
| 1106 | return (*m->nb_negative)(o); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1107 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1108 | return type_error("bad operand type for unary -: '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1109 | } |
| 1110 | |
| 1111 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1112 | PyNumber_Positive(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1113 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1114 | PyNumberMethods *m; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1115 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1116 | if (o == NULL) |
| 1117 | return null_error(); |
| 1118 | m = o->ob_type->tp_as_number; |
| 1119 | if (m && m->nb_positive) |
| 1120 | return (*m->nb_positive)(o); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1121 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1122 | return type_error("bad operand type for unary +: '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1123 | } |
| 1124 | |
| 1125 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1126 | PyNumber_Invert(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1127 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1128 | PyNumberMethods *m; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1129 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1130 | if (o == NULL) |
| 1131 | return null_error(); |
| 1132 | m = o->ob_type->tp_as_number; |
| 1133 | if (m && m->nb_invert) |
| 1134 | return (*m->nb_invert)(o); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1135 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1136 | return type_error("bad operand type for unary ~: '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1137 | } |
| 1138 | |
| 1139 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1140 | PyNumber_Absolute(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1141 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1142 | PyNumberMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1143 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1144 | if (o == NULL) |
| 1145 | return null_error(); |
| 1146 | m = o->ob_type->tp_as_number; |
| 1147 | if (m && m->nb_absolute) |
| 1148 | return m->nb_absolute(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1149 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1150 | return type_error("bad operand type for abs(): '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1151 | } |
| 1152 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 1153 | /* Return a Python Int or Long from the object item |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1154 | Raise TypeError if the result is not an int-or-long |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 1155 | or if the object cannot be interpreted as an index. |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1156 | */ |
| 1157 | PyObject * |
Guido van Rossum | 38fff8c | 2006-03-07 18:50:55 +0000 | [diff] [blame] | 1158 | PyNumber_Index(PyObject *item) |
| 1159 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1160 | PyObject *result = NULL; |
| 1161 | if (item == NULL) |
| 1162 | return null_error(); |
| 1163 | if (PyLong_Check(item)) { |
| 1164 | Py_INCREF(item); |
| 1165 | return item; |
| 1166 | } |
| 1167 | if (PyIndex_Check(item)) { |
| 1168 | result = item->ob_type->tp_as_number->nb_index(item); |
| 1169 | if (result && !PyLong_Check(result)) { |
| 1170 | PyErr_Format(PyExc_TypeError, |
| 1171 | "__index__ returned non-int " |
| 1172 | "(type %.200s)", |
| 1173 | result->ob_type->tp_name); |
| 1174 | Py_DECREF(result); |
| 1175 | return NULL; |
| 1176 | } |
| 1177 | } |
| 1178 | else { |
| 1179 | PyErr_Format(PyExc_TypeError, |
| 1180 | "'%.200s' object cannot be interpreted " |
| 1181 | "as an integer", item->ob_type->tp_name); |
| 1182 | } |
| 1183 | return result; |
Guido van Rossum | 38fff8c | 2006-03-07 18:50:55 +0000 | [diff] [blame] | 1184 | } |
| 1185 | |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1186 | /* Return an error on Overflow only if err is not NULL*/ |
| 1187 | |
| 1188 | Py_ssize_t |
| 1189 | PyNumber_AsSsize_t(PyObject *item, PyObject *err) |
| 1190 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1191 | Py_ssize_t result; |
| 1192 | PyObject *runerr; |
| 1193 | PyObject *value = PyNumber_Index(item); |
| 1194 | if (value == NULL) |
| 1195 | return -1; |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1196 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1197 | /* We're done if PyLong_AsSsize_t() returns without error. */ |
| 1198 | result = PyLong_AsSsize_t(value); |
| 1199 | if (result != -1 || !(runerr = PyErr_Occurred())) |
| 1200 | goto finish; |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1201 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1202 | /* Error handling code -- only manage OverflowError differently */ |
| 1203 | if (!PyErr_GivenExceptionMatches(runerr, PyExc_OverflowError)) |
| 1204 | goto finish; |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1205 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1206 | PyErr_Clear(); |
| 1207 | /* If no error-handling desired then the default clipping |
| 1208 | is sufficient. |
| 1209 | */ |
| 1210 | if (!err) { |
| 1211 | assert(PyLong_Check(value)); |
| 1212 | /* Whether or not it is less than or equal to |
| 1213 | zero is determined by the sign of ob_size |
| 1214 | */ |
| 1215 | if (_PyLong_Sign(value) < 0) |
| 1216 | result = PY_SSIZE_T_MIN; |
| 1217 | else |
| 1218 | result = PY_SSIZE_T_MAX; |
| 1219 | } |
| 1220 | else { |
| 1221 | /* Otherwise replace the error with caller's error object. */ |
| 1222 | PyErr_Format(err, |
| 1223 | "cannot fit '%.200s' into an index-sized integer", |
| 1224 | item->ob_type->tp_name); |
| 1225 | } |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 1226 | |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1227 | finish: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1228 | Py_DECREF(value); |
| 1229 | return result; |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1230 | } |
| 1231 | |
| 1232 | |
Benjamin Peterson | b7f1da5 | 2012-03-21 14:44:43 -0400 | [diff] [blame] | 1233 | /* |
| 1234 | Returns the Integral instance converted to an int. The instance is expected |
| 1235 | to be an int or have an __int__ method. Steals integral's |
| 1236 | reference. error_format will be used to create the TypeError if integral |
| 1237 | isn't actually an Integral instance. error_format should be a format string |
| 1238 | that can accept a char* naming integral's type. |
| 1239 | */ |
| 1240 | static PyObject * |
| 1241 | convert_integral_to_int(PyObject *integral, const char *error_format) |
Christian Heimes | 15ebc88 | 2008-02-04 18:48:49 +0000 | [diff] [blame] | 1242 | { |
Benjamin Peterson | d614e70 | 2012-03-21 14:38:11 -0400 | [diff] [blame] | 1243 | PyNumberMethods *nb; |
| 1244 | if (PyLong_Check(integral)) |
| 1245 | return integral; |
| 1246 | nb = Py_TYPE(integral)->tp_as_number; |
| 1247 | if (nb->nb_int) { |
| 1248 | PyObject *as_int = nb->nb_int(integral); |
Mark Dickinson | 3d78385 | 2012-09-27 19:38:59 +0100 | [diff] [blame] | 1249 | if (!as_int || PyLong_Check(as_int)) { |
| 1250 | Py_DECREF(integral); |
Benjamin Peterson | d614e70 | 2012-03-21 14:38:11 -0400 | [diff] [blame] | 1251 | return as_int; |
Mark Dickinson | 3d78385 | 2012-09-27 19:38:59 +0100 | [diff] [blame] | 1252 | } |
Benjamin Peterson | d614e70 | 2012-03-21 14:38:11 -0400 | [diff] [blame] | 1253 | Py_DECREF(as_int); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1254 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1255 | PyErr_Format(PyExc_TypeError, error_format, Py_TYPE(integral)->tp_name); |
| 1256 | Py_DECREF(integral); |
Benjamin Peterson | d614e70 | 2012-03-21 14:38:11 -0400 | [diff] [blame] | 1257 | return NULL; |
Christian Heimes | 15ebc88 | 2008-02-04 18:48:49 +0000 | [diff] [blame] | 1258 | } |
| 1259 | |
| 1260 | |
Guido van Rossum | 9e896b3 | 2000-04-05 20:11:21 +0000 | [diff] [blame] | 1261 | /* Add a check for embedded NULL-bytes in the argument. */ |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 1262 | static PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1263 | long_from_string(const char *s, Py_ssize_t len) |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 1264 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1265 | char *end; |
| 1266 | PyObject *x; |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 1267 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1268 | x = PyLong_FromString((char*)s, &end, 10); |
| 1269 | if (x == NULL) |
| 1270 | return NULL; |
| 1271 | if (end != s + len) { |
| 1272 | PyErr_SetString(PyExc_ValueError, |
| 1273 | "null byte in argument for int()"); |
| 1274 | Py_DECREF(x); |
| 1275 | return NULL; |
| 1276 | } |
| 1277 | return x; |
Barry Warsaw | 226ae6c | 1999-10-12 19:54:53 +0000 | [diff] [blame] | 1278 | } |
| 1279 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1280 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1281 | PyNumber_Long(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1282 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1283 | PyNumberMethods *m; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1284 | PyObject *trunc_func; |
| 1285 | const char *buffer; |
| 1286 | Py_ssize_t buffer_len; |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 1287 | _Py_IDENTIFIER(__trunc__); |
Christian Heimes | 15ebc88 | 2008-02-04 18:48:49 +0000 | [diff] [blame] | 1288 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1289 | if (o == NULL) |
| 1290 | return null_error(); |
| 1291 | if (PyLong_CheckExact(o)) { |
| 1292 | Py_INCREF(o); |
| 1293 | return o; |
| 1294 | } |
| 1295 | m = o->ob_type->tp_as_number; |
| 1296 | if (m && m->nb_int) { /* This should include subclasses of int */ |
| 1297 | PyObject *res = m->nb_int(o); |
| 1298 | if (res && !PyLong_Check(res)) { |
| 1299 | PyErr_Format(PyExc_TypeError, |
| 1300 | "__int__ returned non-int (type %.200s)", |
| 1301 | res->ob_type->tp_name); |
| 1302 | Py_DECREF(res); |
| 1303 | return NULL; |
| 1304 | } |
| 1305 | return res; |
| 1306 | } |
| 1307 | if (PyLong_Check(o)) /* An int subclass without nb_int */ |
| 1308 | return _PyLong_Copy((PyLongObject *)o); |
Benjamin Peterson | 1b1a8e7 | 2012-03-20 23:48:11 -0400 | [diff] [blame] | 1309 | trunc_func = _PyObject_LookupSpecial(o, &PyId___trunc__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1310 | if (trunc_func) { |
| 1311 | PyObject *truncated = PyEval_CallObject(trunc_func, NULL); |
| 1312 | PyObject *int_instance; |
| 1313 | Py_DECREF(trunc_func); |
| 1314 | /* __trunc__ is specified to return an Integral type, |
Benjamin Peterson | 520e850 | 2012-03-21 14:51:14 -0400 | [diff] [blame] | 1315 | but int() needs to return a int. */ |
Benjamin Peterson | b7f1da5 | 2012-03-21 14:44:43 -0400 | [diff] [blame] | 1316 | int_instance = convert_integral_to_int(truncated, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1317 | "__trunc__ returned non-Integral (type %.200s)"); |
| 1318 | return int_instance; |
| 1319 | } |
Benjamin Peterson | 1b1a8e7 | 2012-03-20 23:48:11 -0400 | [diff] [blame] | 1320 | if (PyErr_Occurred()) |
| 1321 | return NULL; |
Christian Heimes | 15ebc88 | 2008-02-04 18:48:49 +0000 | [diff] [blame] | 1322 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1323 | if (PyBytes_Check(o)) |
| 1324 | /* need to do extra error checking that PyLong_FromString() |
Benjamin Peterson | 520e850 | 2012-03-21 14:51:14 -0400 | [diff] [blame] | 1325 | * doesn't do. In particular int('9.5') must raise an |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1326 | * exception, not truncate the float. |
| 1327 | */ |
| 1328 | return long_from_string(PyBytes_AS_STRING(o), |
| 1329 | PyBytes_GET_SIZE(o)); |
| 1330 | if (PyUnicode_Check(o)) |
| 1331 | /* The above check is done in PyLong_FromUnicode(). */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 1332 | return PyLong_FromUnicodeObject(o, 10); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1333 | if (!PyObject_AsCharBuffer(o, &buffer, &buffer_len)) |
| 1334 | return long_from_string(buffer, buffer_len); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1335 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1336 | return type_error("int() argument must be a string or a " |
| 1337 | "number, not '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1338 | } |
| 1339 | |
| 1340 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1341 | PyNumber_Float(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1342 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1343 | PyNumberMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1344 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1345 | if (o == NULL) |
| 1346 | return null_error(); |
| 1347 | m = o->ob_type->tp_as_number; |
| 1348 | if (m && m->nb_float) { /* This should include subclasses of float */ |
| 1349 | PyObject *res = m->nb_float(o); |
| 1350 | if (res && !PyFloat_Check(res)) { |
| 1351 | PyErr_Format(PyExc_TypeError, |
| 1352 | "__float__ returned non-float (type %.200s)", |
| 1353 | res->ob_type->tp_name); |
| 1354 | Py_DECREF(res); |
| 1355 | return NULL; |
| 1356 | } |
| 1357 | return res; |
| 1358 | } |
| 1359 | if (PyFloat_Check(o)) { /* A float subclass with nb_float == NULL */ |
| 1360 | PyFloatObject *po = (PyFloatObject *)o; |
| 1361 | return PyFloat_FromDouble(po->ob_fval); |
| 1362 | } |
| 1363 | return PyFloat_FromString(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1364 | } |
| 1365 | |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1366 | |
| 1367 | PyObject * |
| 1368 | PyNumber_ToBase(PyObject *n, int base) |
| 1369 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1370 | PyObject *res = NULL; |
| 1371 | PyObject *index = PyNumber_Index(n); |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1372 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1373 | if (!index) |
| 1374 | return NULL; |
| 1375 | if (PyLong_Check(index)) |
| 1376 | res = _PyLong_Format(index, base); |
| 1377 | else |
| 1378 | /* It should not be possible to get here, as |
| 1379 | PyNumber_Index already has a check for the same |
| 1380 | condition */ |
| 1381 | PyErr_SetString(PyExc_ValueError, "PyNumber_ToBase: index not " |
| 1382 | "int or long"); |
| 1383 | Py_DECREF(index); |
| 1384 | return res; |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1385 | } |
| 1386 | |
| 1387 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1388 | /* Operations on sequences */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1389 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1390 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1391 | PySequence_Check(PyObject *s) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1392 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1393 | if (PyDict_Check(s)) |
| 1394 | return 0; |
| 1395 | return s != NULL && s->ob_type->tp_as_sequence && |
| 1396 | s->ob_type->tp_as_sequence->sq_item != NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1397 | } |
| 1398 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1399 | Py_ssize_t |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 1400 | PySequence_Size(PyObject *s) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1401 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1402 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1403 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1404 | if (s == NULL) { |
| 1405 | null_error(); |
| 1406 | return -1; |
| 1407 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1408 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1409 | m = s->ob_type->tp_as_sequence; |
| 1410 | if (m && m->sq_length) |
| 1411 | return m->sq_length(s); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1412 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1413 | type_error("object of type '%.200s' has no len()", s); |
| 1414 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1415 | } |
| 1416 | |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1417 | #undef PySequence_Length |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1418 | Py_ssize_t |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1419 | PySequence_Length(PyObject *s) |
| 1420 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1421 | return PySequence_Size(s); |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1422 | } |
| 1423 | #define PySequence_Length PySequence_Size |
| 1424 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1425 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1426 | PySequence_Concat(PyObject *s, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1427 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1428 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1429 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1430 | if (s == NULL || o == NULL) |
| 1431 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1432 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1433 | m = s->ob_type->tp_as_sequence; |
| 1434 | if (m && m->sq_concat) |
| 1435 | return m->sq_concat(s, o); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1436 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1437 | /* Instances of user classes defining an __add__() method only |
| 1438 | have an nb_add slot, not an sq_concat slot. So we fall back |
| 1439 | to nb_add if both arguments appear to be sequences. */ |
| 1440 | if (PySequence_Check(s) && PySequence_Check(o)) { |
| 1441 | PyObject *result = binary_op1(s, o, NB_SLOT(nb_add)); |
| 1442 | if (result != Py_NotImplemented) |
| 1443 | return result; |
| 1444 | Py_DECREF(result); |
| 1445 | } |
| 1446 | return type_error("'%.200s' object can't be concatenated", s); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1447 | } |
| 1448 | |
| 1449 | PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1450 | PySequence_Repeat(PyObject *o, Py_ssize_t count) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1451 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1452 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1453 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1454 | if (o == NULL) |
| 1455 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1456 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1457 | m = o->ob_type->tp_as_sequence; |
| 1458 | if (m && m->sq_repeat) |
| 1459 | return m->sq_repeat(o, count); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1460 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1461 | /* Instances of user classes defining a __mul__() method only |
| 1462 | have an nb_multiply slot, not an sq_repeat slot. so we fall back |
| 1463 | to nb_multiply if o appears to be a sequence. */ |
| 1464 | if (PySequence_Check(o)) { |
| 1465 | PyObject *n, *result; |
| 1466 | n = PyLong_FromSsize_t(count); |
| 1467 | if (n == NULL) |
| 1468 | return NULL; |
| 1469 | result = binary_op1(o, n, NB_SLOT(nb_multiply)); |
| 1470 | Py_DECREF(n); |
| 1471 | if (result != Py_NotImplemented) |
| 1472 | return result; |
| 1473 | Py_DECREF(result); |
| 1474 | } |
| 1475 | return type_error("'%.200s' object can't be repeated", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1476 | } |
| 1477 | |
| 1478 | PyObject * |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1479 | PySequence_InPlaceConcat(PyObject *s, PyObject *o) |
| 1480 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1481 | PySequenceMethods *m; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1482 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1483 | if (s == NULL || o == NULL) |
| 1484 | return null_error(); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1485 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1486 | m = s->ob_type->tp_as_sequence; |
| 1487 | if (m && m->sq_inplace_concat) |
| 1488 | return m->sq_inplace_concat(s, o); |
| 1489 | if (m && m->sq_concat) |
| 1490 | return m->sq_concat(s, o); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1491 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1492 | if (PySequence_Check(s) && PySequence_Check(o)) { |
| 1493 | PyObject *result = binary_iop1(s, o, NB_SLOT(nb_inplace_add), |
| 1494 | NB_SLOT(nb_add)); |
| 1495 | if (result != Py_NotImplemented) |
| 1496 | return result; |
| 1497 | Py_DECREF(result); |
| 1498 | } |
| 1499 | return type_error("'%.200s' object can't be concatenated", s); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1500 | } |
| 1501 | |
| 1502 | PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1503 | PySequence_InPlaceRepeat(PyObject *o, Py_ssize_t count) |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1504 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1505 | PySequenceMethods *m; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1506 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1507 | if (o == NULL) |
| 1508 | return null_error(); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1509 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1510 | m = o->ob_type->tp_as_sequence; |
| 1511 | if (m && m->sq_inplace_repeat) |
| 1512 | return m->sq_inplace_repeat(o, count); |
| 1513 | if (m && m->sq_repeat) |
| 1514 | return m->sq_repeat(o, count); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1515 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1516 | if (PySequence_Check(o)) { |
| 1517 | PyObject *n, *result; |
| 1518 | n = PyLong_FromSsize_t(count); |
| 1519 | if (n == NULL) |
| 1520 | return NULL; |
| 1521 | result = binary_iop1(o, n, NB_SLOT(nb_inplace_multiply), |
| 1522 | NB_SLOT(nb_multiply)); |
| 1523 | Py_DECREF(n); |
| 1524 | if (result != Py_NotImplemented) |
| 1525 | return result; |
| 1526 | Py_DECREF(result); |
| 1527 | } |
| 1528 | return type_error("'%.200s' object can't be repeated", o); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1529 | } |
| 1530 | |
| 1531 | PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1532 | PySequence_GetItem(PyObject *s, Py_ssize_t i) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1533 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1534 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1535 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1536 | if (s == NULL) |
| 1537 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1538 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1539 | m = s->ob_type->tp_as_sequence; |
| 1540 | if (m && m->sq_item) { |
| 1541 | if (i < 0) { |
| 1542 | if (m->sq_length) { |
| 1543 | Py_ssize_t l = (*m->sq_length)(s); |
| 1544 | if (l < 0) |
| 1545 | return NULL; |
| 1546 | i += l; |
| 1547 | } |
| 1548 | } |
| 1549 | return m->sq_item(s, i); |
| 1550 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1551 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1552 | return type_error("'%.200s' object does not support indexing", s); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1553 | } |
| 1554 | |
| 1555 | PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1556 | PySequence_GetSlice(PyObject *s, Py_ssize_t i1, Py_ssize_t i2) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1557 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1558 | PyMappingMethods *mp; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1559 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1560 | if (!s) return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1561 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1562 | mp = s->ob_type->tp_as_mapping; |
Benjamin Peterson | 568867a | 2010-09-11 16:02:03 +0000 | [diff] [blame] | 1563 | if (mp && mp->mp_subscript) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1564 | PyObject *res; |
| 1565 | PyObject *slice = _PySlice_FromIndices(i1, i2); |
| 1566 | if (!slice) |
| 1567 | return NULL; |
| 1568 | res = mp->mp_subscript(s, slice); |
| 1569 | Py_DECREF(slice); |
| 1570 | return res; |
| 1571 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1572 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1573 | return type_error("'%.200s' object is unsliceable", s); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1574 | } |
| 1575 | |
| 1576 | int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1577 | PySequence_SetItem(PyObject *s, Py_ssize_t i, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1578 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1579 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1580 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1581 | if (s == NULL) { |
| 1582 | null_error(); |
| 1583 | return -1; |
| 1584 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1585 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1586 | m = s->ob_type->tp_as_sequence; |
| 1587 | if (m && m->sq_ass_item) { |
| 1588 | if (i < 0) { |
| 1589 | if (m->sq_length) { |
| 1590 | Py_ssize_t l = (*m->sq_length)(s); |
| 1591 | if (l < 0) |
| 1592 | return -1; |
| 1593 | i += l; |
| 1594 | } |
| 1595 | } |
| 1596 | return m->sq_ass_item(s, i, o); |
| 1597 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1598 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1599 | type_error("'%.200s' object does not support item assignment", s); |
| 1600 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1601 | } |
| 1602 | |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1603 | int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1604 | PySequence_DelItem(PyObject *s, Py_ssize_t i) |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1605 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1606 | PySequenceMethods *m; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1607 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1608 | if (s == NULL) { |
| 1609 | null_error(); |
| 1610 | return -1; |
| 1611 | } |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1612 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1613 | m = s->ob_type->tp_as_sequence; |
| 1614 | if (m && m->sq_ass_item) { |
| 1615 | if (i < 0) { |
| 1616 | if (m->sq_length) { |
| 1617 | Py_ssize_t l = (*m->sq_length)(s); |
| 1618 | if (l < 0) |
| 1619 | return -1; |
| 1620 | i += l; |
| 1621 | } |
| 1622 | } |
| 1623 | return m->sq_ass_item(s, i, (PyObject *)NULL); |
| 1624 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1625 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1626 | type_error("'%.200s' object doesn't support item deletion", s); |
| 1627 | return -1; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1628 | } |
| 1629 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1630 | int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1631 | PySequence_SetSlice(PyObject *s, Py_ssize_t i1, Py_ssize_t i2, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1632 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1633 | PyMappingMethods *mp; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1634 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1635 | if (s == NULL) { |
| 1636 | null_error(); |
| 1637 | return -1; |
| 1638 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1639 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1640 | mp = s->ob_type->tp_as_mapping; |
Benjamin Peterson | 568867a | 2010-09-11 16:02:03 +0000 | [diff] [blame] | 1641 | if (mp && mp->mp_ass_subscript) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1642 | int res; |
| 1643 | PyObject *slice = _PySlice_FromIndices(i1, i2); |
| 1644 | if (!slice) |
| 1645 | return -1; |
| 1646 | res = mp->mp_ass_subscript(s, slice, o); |
| 1647 | Py_DECREF(slice); |
| 1648 | return res; |
| 1649 | } |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1650 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1651 | type_error("'%.200s' object doesn't support slice assignment", s); |
| 1652 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1653 | } |
| 1654 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1655 | int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1656 | PySequence_DelSlice(PyObject *s, Py_ssize_t i1, Py_ssize_t i2) |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1657 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1658 | PyMappingMethods *mp; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1659 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1660 | if (s == NULL) { |
| 1661 | null_error(); |
| 1662 | return -1; |
| 1663 | } |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1664 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1665 | mp = s->ob_type->tp_as_mapping; |
Benjamin Peterson | 568867a | 2010-09-11 16:02:03 +0000 | [diff] [blame] | 1666 | if (mp && mp->mp_ass_subscript) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1667 | int res; |
| 1668 | PyObject *slice = _PySlice_FromIndices(i1, i2); |
| 1669 | if (!slice) |
| 1670 | return -1; |
| 1671 | res = mp->mp_ass_subscript(s, slice, NULL); |
| 1672 | Py_DECREF(slice); |
| 1673 | return res; |
| 1674 | } |
| 1675 | type_error("'%.200s' object doesn't support slice deletion", s); |
| 1676 | return -1; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1677 | } |
| 1678 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1679 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1680 | PySequence_Tuple(PyObject *v) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1681 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1682 | PyObject *it; /* iter(v) */ |
| 1683 | Py_ssize_t n; /* guess for result tuple size */ |
| 1684 | PyObject *result = NULL; |
| 1685 | Py_ssize_t j; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1686 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1687 | if (v == NULL) |
| 1688 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1689 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1690 | /* Special-case the common tuple and list cases, for efficiency. */ |
| 1691 | if (PyTuple_CheckExact(v)) { |
| 1692 | /* Note that we can't know whether it's safe to return |
| 1693 | a tuple *subclass* instance as-is, hence the restriction |
| 1694 | to exact tuples here. In contrast, lists always make |
| 1695 | a copy, so there's no need for exactness below. */ |
| 1696 | Py_INCREF(v); |
| 1697 | return v; |
| 1698 | } |
| 1699 | if (PyList_Check(v)) |
| 1700 | return PyList_AsTuple(v); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1701 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1702 | /* Get iterator. */ |
| 1703 | it = PyObject_GetIter(v); |
| 1704 | if (it == NULL) |
| 1705 | return NULL; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1706 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1707 | /* Guess result size and allocate space. */ |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame^] | 1708 | n = PyObject_LengthHint(v, 10); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1709 | if (n == -1) |
| 1710 | goto Fail; |
| 1711 | result = PyTuple_New(n); |
| 1712 | if (result == NULL) |
| 1713 | goto Fail; |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1714 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1715 | /* Fill the tuple. */ |
| 1716 | for (j = 0; ; ++j) { |
| 1717 | PyObject *item = PyIter_Next(it); |
| 1718 | if (item == NULL) { |
| 1719 | if (PyErr_Occurred()) |
| 1720 | goto Fail; |
| 1721 | break; |
| 1722 | } |
| 1723 | if (j >= n) { |
| 1724 | Py_ssize_t oldn = n; |
| 1725 | /* The over-allocation strategy can grow a bit faster |
| 1726 | than for lists because unlike lists the |
| 1727 | over-allocation isn't permanent -- we reclaim |
| 1728 | the excess before the end of this routine. |
| 1729 | So, grow by ten and then add 25%. |
| 1730 | */ |
| 1731 | n += 10; |
| 1732 | n += n >> 2; |
| 1733 | if (n < oldn) { |
| 1734 | /* Check for overflow */ |
| 1735 | PyErr_NoMemory(); |
| 1736 | Py_DECREF(item); |
| 1737 | goto Fail; |
| 1738 | } |
| 1739 | if (_PyTuple_Resize(&result, n) != 0) { |
| 1740 | Py_DECREF(item); |
| 1741 | goto Fail; |
| 1742 | } |
| 1743 | } |
| 1744 | PyTuple_SET_ITEM(result, j, item); |
| 1745 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1746 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1747 | /* Cut tuple back if guess was too large. */ |
| 1748 | if (j < n && |
| 1749 | _PyTuple_Resize(&result, j) != 0) |
| 1750 | goto Fail; |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1751 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1752 | Py_DECREF(it); |
| 1753 | return result; |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1754 | |
| 1755 | Fail: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1756 | Py_XDECREF(result); |
| 1757 | Py_DECREF(it); |
| 1758 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1759 | } |
| 1760 | |
Guido van Rossum | 3c5936a | 1996-12-05 21:51:24 +0000 | [diff] [blame] | 1761 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1762 | PySequence_List(PyObject *v) |
Guido van Rossum | 3c5936a | 1996-12-05 21:51:24 +0000 | [diff] [blame] | 1763 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1764 | PyObject *result; /* result list */ |
| 1765 | PyObject *rv; /* return value from PyList_Extend */ |
Guido van Rossum | 4669fb4 | 1997-04-02 05:31:09 +0000 | [diff] [blame] | 1766 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1767 | if (v == NULL) |
| 1768 | return null_error(); |
Guido van Rossum | 5dba9e8 | 1998-07-10 18:03:50 +0000 | [diff] [blame] | 1769 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1770 | result = PyList_New(0); |
| 1771 | if (result == NULL) |
| 1772 | return NULL; |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 1773 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1774 | rv = _PyList_Extend((PyListObject *)result, v); |
| 1775 | if (rv == NULL) { |
| 1776 | Py_DECREF(result); |
| 1777 | return NULL; |
| 1778 | } |
| 1779 | Py_DECREF(rv); |
| 1780 | return result; |
Guido van Rossum | 3c5936a | 1996-12-05 21:51:24 +0000 | [diff] [blame] | 1781 | } |
| 1782 | |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 1783 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1784 | PySequence_Fast(PyObject *v, const char *m) |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 1785 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1786 | PyObject *it; |
Raymond Hettinger | 2fb7029 | 2004-01-11 23:26:51 +0000 | [diff] [blame] | 1787 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1788 | if (v == NULL) |
| 1789 | return null_error(); |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 1790 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1791 | if (PyList_CheckExact(v) || PyTuple_CheckExact(v)) { |
| 1792 | Py_INCREF(v); |
| 1793 | return v; |
| 1794 | } |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 1795 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1796 | it = PyObject_GetIter(v); |
| 1797 | if (it == NULL) { |
| 1798 | if (PyErr_ExceptionMatches(PyExc_TypeError)) |
| 1799 | PyErr_SetString(PyExc_TypeError, m); |
| 1800 | return NULL; |
| 1801 | } |
Raymond Hettinger | 2fb7029 | 2004-01-11 23:26:51 +0000 | [diff] [blame] | 1802 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1803 | v = PySequence_List(it); |
| 1804 | Py_DECREF(it); |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 1805 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1806 | return v; |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 1807 | } |
| 1808 | |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1809 | /* Iterate over seq. Result depends on the operation: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1810 | PY_ITERSEARCH_COUNT: -1 if error, else # of times obj appears in seq. |
| 1811 | PY_ITERSEARCH_INDEX: 0-based index of first occurrence of obj in seq; |
| 1812 | set ValueError and return -1 if none found; also return -1 on error. |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1813 | Py_ITERSEARCH_CONTAINS: return 1 if obj in seq, else 0; -1 on error. |
| 1814 | */ |
Neal Norwitz | 1fc4b77 | 2006-03-04 18:49:58 +0000 | [diff] [blame] | 1815 | Py_ssize_t |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1816 | _PySequence_IterSearch(PyObject *seq, PyObject *obj, int operation) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1817 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1818 | Py_ssize_t n; |
| 1819 | int wrapped; /* for PY_ITERSEARCH_INDEX, true iff n wrapped around */ |
| 1820 | PyObject *it; /* iter(seq) */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1821 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1822 | if (seq == NULL || obj == NULL) { |
| 1823 | null_error(); |
| 1824 | return -1; |
| 1825 | } |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1826 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1827 | it = PyObject_GetIter(seq); |
| 1828 | if (it == NULL) { |
| 1829 | type_error("argument of type '%.200s' is not iterable", seq); |
| 1830 | return -1; |
| 1831 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1832 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1833 | n = wrapped = 0; |
| 1834 | for (;;) { |
| 1835 | int cmp; |
| 1836 | PyObject *item = PyIter_Next(it); |
| 1837 | if (item == NULL) { |
| 1838 | if (PyErr_Occurred()) |
| 1839 | goto Fail; |
| 1840 | break; |
| 1841 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1842 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1843 | cmp = PyObject_RichCompareBool(obj, item, Py_EQ); |
| 1844 | Py_DECREF(item); |
| 1845 | if (cmp < 0) |
| 1846 | goto Fail; |
| 1847 | if (cmp > 0) { |
| 1848 | switch (operation) { |
| 1849 | case PY_ITERSEARCH_COUNT: |
| 1850 | if (n == PY_SSIZE_T_MAX) { |
| 1851 | PyErr_SetString(PyExc_OverflowError, |
| 1852 | "count exceeds C integer size"); |
| 1853 | goto Fail; |
| 1854 | } |
| 1855 | ++n; |
| 1856 | break; |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1857 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1858 | case PY_ITERSEARCH_INDEX: |
| 1859 | if (wrapped) { |
| 1860 | PyErr_SetString(PyExc_OverflowError, |
| 1861 | "index exceeds C integer size"); |
| 1862 | goto Fail; |
| 1863 | } |
| 1864 | goto Done; |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1865 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1866 | case PY_ITERSEARCH_CONTAINS: |
| 1867 | n = 1; |
| 1868 | goto Done; |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1869 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1870 | default: |
| 1871 | assert(!"unknown operation"); |
| 1872 | } |
| 1873 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1874 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1875 | if (operation == PY_ITERSEARCH_INDEX) { |
| 1876 | if (n == PY_SSIZE_T_MAX) |
| 1877 | wrapped = 1; |
| 1878 | ++n; |
| 1879 | } |
| 1880 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1881 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1882 | if (operation != PY_ITERSEARCH_INDEX) |
| 1883 | goto Done; |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1884 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1885 | PyErr_SetString(PyExc_ValueError, |
| 1886 | "sequence.index(x): x not in sequence"); |
| 1887 | /* fall into failure code */ |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1888 | Fail: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1889 | n = -1; |
| 1890 | /* fall through */ |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1891 | Done: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1892 | Py_DECREF(it); |
| 1893 | return n; |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 1894 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1895 | } |
| 1896 | |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1897 | /* Return # of times o appears in s. */ |
Neal Norwitz | 1fc4b77 | 2006-03-04 18:49:58 +0000 | [diff] [blame] | 1898 | Py_ssize_t |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 1899 | PySequence_Count(PyObject *s, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1900 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1901 | return _PySequence_IterSearch(s, o, PY_ITERSEARCH_COUNT); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1902 | } |
| 1903 | |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1904 | /* 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] | 1905 | * Use sq_contains if possible, else defer to _PySequence_IterSearch(). |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1906 | */ |
| 1907 | int |
| 1908 | PySequence_Contains(PyObject *seq, PyObject *ob) |
| 1909 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1910 | Py_ssize_t result; |
| 1911 | PySequenceMethods *sqm = seq->ob_type->tp_as_sequence; |
| 1912 | if (sqm != NULL && sqm->sq_contains != NULL) |
| 1913 | return (*sqm->sq_contains)(seq, ob); |
| 1914 | result = _PySequence_IterSearch(seq, ob, PY_ITERSEARCH_CONTAINS); |
| 1915 | return Py_SAFE_DOWNCAST(result, Py_ssize_t, int); |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1916 | } |
| 1917 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1918 | /* Backwards compatibility */ |
| 1919 | #undef PySequence_In |
| 1920 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1921 | PySequence_In(PyObject *w, PyObject *v) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1922 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1923 | return PySequence_Contains(w, v); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1924 | } |
| 1925 | |
Neal Norwitz | 1fc4b77 | 2006-03-04 18:49:58 +0000 | [diff] [blame] | 1926 | Py_ssize_t |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1927 | PySequence_Index(PyObject *s, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1928 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1929 | return _PySequence_IterSearch(s, o, PY_ITERSEARCH_INDEX); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1930 | } |
| 1931 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1932 | /* Operations on mappings */ |
| 1933 | |
| 1934 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1935 | PyMapping_Check(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1936 | { |
Benjamin Peterson | 2199227 | 2011-12-28 12:01:31 -0600 | [diff] [blame] | 1937 | return o && o->ob_type->tp_as_mapping && |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1938 | o->ob_type->tp_as_mapping->mp_subscript; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1939 | } |
| 1940 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1941 | Py_ssize_t |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 1942 | PyMapping_Size(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1943 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1944 | PyMappingMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1945 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1946 | if (o == NULL) { |
| 1947 | null_error(); |
| 1948 | return -1; |
| 1949 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1950 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1951 | m = o->ob_type->tp_as_mapping; |
| 1952 | if (m && m->mp_length) |
| 1953 | return m->mp_length(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1954 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1955 | type_error("object of type '%.200s' has no len()", o); |
| 1956 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1957 | } |
| 1958 | |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1959 | #undef PyMapping_Length |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1960 | Py_ssize_t |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1961 | PyMapping_Length(PyObject *o) |
| 1962 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1963 | return PyMapping_Size(o); |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1964 | } |
| 1965 | #define PyMapping_Length PyMapping_Size |
| 1966 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1967 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1968 | PyMapping_GetItemString(PyObject *o, char *key) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1969 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1970 | PyObject *okey, *r; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1971 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1972 | if (key == NULL) |
| 1973 | return null_error(); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1974 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1975 | okey = PyUnicode_FromString(key); |
| 1976 | if (okey == NULL) |
| 1977 | return NULL; |
| 1978 | r = PyObject_GetItem(o, okey); |
| 1979 | Py_DECREF(okey); |
| 1980 | return r; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1981 | } |
| 1982 | |
| 1983 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1984 | PyMapping_SetItemString(PyObject *o, char *key, PyObject *value) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1985 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1986 | PyObject *okey; |
| 1987 | int r; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1988 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1989 | if (key == NULL) { |
| 1990 | null_error(); |
| 1991 | return -1; |
| 1992 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1993 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1994 | okey = PyUnicode_FromString(key); |
| 1995 | if (okey == NULL) |
| 1996 | return -1; |
| 1997 | r = PyObject_SetItem(o, okey, value); |
| 1998 | Py_DECREF(okey); |
| 1999 | return r; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2000 | } |
| 2001 | |
| 2002 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2003 | PyMapping_HasKeyString(PyObject *o, char *key) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2004 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2005 | PyObject *v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2006 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2007 | v = PyMapping_GetItemString(o, key); |
| 2008 | if (v) { |
| 2009 | Py_DECREF(v); |
| 2010 | return 1; |
| 2011 | } |
| 2012 | PyErr_Clear(); |
| 2013 | return 0; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2014 | } |
| 2015 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2016 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2017 | PyMapping_HasKey(PyObject *o, PyObject *key) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2018 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2019 | PyObject *v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2020 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2021 | v = PyObject_GetItem(o, key); |
| 2022 | if (v) { |
| 2023 | Py_DECREF(v); |
| 2024 | return 1; |
| 2025 | } |
| 2026 | PyErr_Clear(); |
| 2027 | return 0; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2028 | } |
| 2029 | |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2030 | PyObject * |
| 2031 | PyMapping_Keys(PyObject *o) |
| 2032 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2033 | PyObject *keys; |
| 2034 | PyObject *fast; |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 2035 | _Py_IDENTIFIER(keys); |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2036 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2037 | if (PyDict_CheckExact(o)) |
| 2038 | return PyDict_Keys(o); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2039 | keys = _PyObject_CallMethodId(o, &PyId_keys, NULL); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2040 | if (keys == NULL) |
| 2041 | return NULL; |
| 2042 | fast = PySequence_Fast(keys, "o.keys() are not iterable"); |
| 2043 | Py_DECREF(keys); |
| 2044 | return fast; |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2045 | } |
| 2046 | |
| 2047 | PyObject * |
| 2048 | PyMapping_Items(PyObject *o) |
| 2049 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2050 | PyObject *items; |
| 2051 | PyObject *fast; |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 2052 | _Py_IDENTIFIER(items); |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2053 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2054 | if (PyDict_CheckExact(o)) |
| 2055 | return PyDict_Items(o); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2056 | items = _PyObject_CallMethodId(o, &PyId_items, NULL); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2057 | if (items == NULL) |
| 2058 | return NULL; |
| 2059 | fast = PySequence_Fast(items, "o.items() are not iterable"); |
| 2060 | Py_DECREF(items); |
| 2061 | return fast; |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2062 | } |
| 2063 | |
| 2064 | PyObject * |
| 2065 | PyMapping_Values(PyObject *o) |
| 2066 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2067 | PyObject *values; |
| 2068 | PyObject *fast; |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 2069 | _Py_IDENTIFIER(values); |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2070 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2071 | if (PyDict_CheckExact(o)) |
| 2072 | return PyDict_Values(o); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2073 | values = _PyObject_CallMethodId(o, &PyId_values, NULL); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2074 | if (values == NULL) |
| 2075 | return NULL; |
| 2076 | fast = PySequence_Fast(values, "o.values() are not iterable"); |
| 2077 | Py_DECREF(values); |
| 2078 | return fast; |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2079 | } |
| 2080 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2081 | /* Operations on callable objects */ |
| 2082 | |
| 2083 | /* XXX PyCallable_Check() is in object.c */ |
| 2084 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2085 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2086 | PyObject_CallObject(PyObject *o, PyObject *a) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2087 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2088 | return PyEval_CallObjectWithKeywords(o, a, NULL); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2089 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2090 | |
| 2091 | PyObject * |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2092 | PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw) |
| 2093 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2094 | ternaryfunc call; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2095 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2096 | if ((call = func->ob_type->tp_call) != NULL) { |
| 2097 | PyObject *result; |
| 2098 | if (Py_EnterRecursiveCall(" while calling a Python object")) |
| 2099 | return NULL; |
| 2100 | result = (*call)(func, arg, kw); |
| 2101 | Py_LeaveRecursiveCall(); |
| 2102 | if (result == NULL && !PyErr_Occurred()) |
| 2103 | PyErr_SetString( |
| 2104 | PyExc_SystemError, |
| 2105 | "NULL result without error in PyObject_Call"); |
| 2106 | return result; |
| 2107 | } |
| 2108 | PyErr_Format(PyExc_TypeError, "'%.200s' object is not callable", |
| 2109 | func->ob_type->tp_name); |
| 2110 | return NULL; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2111 | } |
| 2112 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2113 | static PyObject* |
| 2114 | call_function_tail(PyObject *callable, PyObject *args) |
| 2115 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2116 | PyObject *retval; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2117 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2118 | if (args == NULL) |
| 2119 | return NULL; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2120 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2121 | if (!PyTuple_Check(args)) { |
| 2122 | PyObject *a; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2123 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2124 | a = PyTuple_New(1); |
| 2125 | if (a == NULL) { |
| 2126 | Py_DECREF(args); |
| 2127 | return NULL; |
| 2128 | } |
| 2129 | PyTuple_SET_ITEM(a, 0, args); |
| 2130 | args = a; |
| 2131 | } |
| 2132 | retval = PyObject_Call(callable, args, NULL); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2133 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2134 | Py_DECREF(args); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2135 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2136 | return retval; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2137 | } |
| 2138 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2139 | PyObject * |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2140 | PyObject_CallFunction(PyObject *callable, char *format, ...) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2141 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2142 | va_list va; |
| 2143 | PyObject *args; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2144 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2145 | if (callable == NULL) |
| 2146 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2147 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2148 | if (format && *format) { |
| 2149 | va_start(va, format); |
| 2150 | args = Py_VaBuildValue(format, va); |
| 2151 | va_end(va); |
| 2152 | } |
| 2153 | else |
| 2154 | args = PyTuple_New(0); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2155 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2156 | return call_function_tail(callable, args); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2157 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2158 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2159 | PyObject * |
| 2160 | _PyObject_CallFunction_SizeT(PyObject *callable, char *format, ...) |
| 2161 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2162 | va_list va; |
| 2163 | PyObject *args; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2164 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2165 | if (callable == NULL) |
| 2166 | return null_error(); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2167 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2168 | if (format && *format) { |
| 2169 | va_start(va, format); |
| 2170 | args = _Py_VaBuildValue_SizeT(format, va); |
| 2171 | va_end(va); |
| 2172 | } |
| 2173 | else |
| 2174 | args = PyTuple_New(0); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2175 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2176 | return call_function_tail(callable, args); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2177 | } |
| 2178 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2179 | static PyObject* |
| 2180 | callmethod(PyObject* func, char *format, va_list va, int is_size_t) |
| 2181 | { |
| 2182 | PyObject *retval = NULL; |
| 2183 | PyObject *args; |
| 2184 | |
| 2185 | if (!PyCallable_Check(func)) { |
| 2186 | type_error("attribute of type '%.200s' is not callable", func); |
| 2187 | goto exit; |
| 2188 | } |
| 2189 | |
| 2190 | if (format && *format) { |
| 2191 | if (is_size_t) |
| 2192 | args = _Py_VaBuildValue_SizeT(format, va); |
| 2193 | else |
| 2194 | args = Py_VaBuildValue(format, va); |
| 2195 | } |
| 2196 | else |
| 2197 | args = PyTuple_New(0); |
| 2198 | |
| 2199 | retval = call_function_tail(func, args); |
| 2200 | |
| 2201 | exit: |
| 2202 | /* args gets consumed in call_function_tail */ |
| 2203 | Py_XDECREF(func); |
| 2204 | |
| 2205 | return retval; |
| 2206 | } |
| 2207 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2208 | PyObject * |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2209 | PyObject_CallMethod(PyObject *o, char *name, char *format, ...) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2210 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2211 | va_list va; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2212 | PyObject *func = NULL; |
| 2213 | PyObject *retval = NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2214 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2215 | if (o == NULL || name == NULL) |
| 2216 | return null_error(); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2217 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2218 | func = PyObject_GetAttrString(o, name); |
| 2219 | if (func == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2220 | return 0; |
| 2221 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2222 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2223 | va_start(va, format); |
| 2224 | retval = callmethod(func, format, va, 0); |
| 2225 | va_end(va); |
| 2226 | return retval; |
| 2227 | } |
| 2228 | |
| 2229 | PyObject * |
| 2230 | _PyObject_CallMethodId(PyObject *o, _Py_Identifier *name, char *format, ...) |
| 2231 | { |
| 2232 | va_list va; |
| 2233 | PyObject *func = NULL; |
| 2234 | PyObject *retval = NULL; |
| 2235 | |
| 2236 | if (o == NULL || name == NULL) |
| 2237 | return null_error(); |
| 2238 | |
| 2239 | func = _PyObject_GetAttrId(o, name); |
| 2240 | if (func == NULL) { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2241 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2242 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2243 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2244 | va_start(va, format); |
| 2245 | retval = callmethod(func, format, va, 0); |
| 2246 | va_end(va); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2247 | return retval; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2248 | } |
| 2249 | |
| 2250 | PyObject * |
| 2251 | _PyObject_CallMethod_SizeT(PyObject *o, char *name, char *format, ...) |
| 2252 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2253 | va_list va; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2254 | PyObject *func = NULL; |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2255 | PyObject *retval; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2256 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2257 | if (o == NULL || name == NULL) |
| 2258 | return null_error(); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2259 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2260 | func = PyObject_GetAttrString(o, name); |
| 2261 | if (func == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2262 | return 0; |
| 2263 | } |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2264 | va_start(va, format); |
| 2265 | retval = callmethod(func, format, va, 1); |
| 2266 | va_end(va); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2267 | return retval; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2268 | } |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2269 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2270 | PyObject * |
| 2271 | _PyObject_CallMethodId_SizeT(PyObject *o, _Py_Identifier *name, char *format, ...) |
| 2272 | { |
| 2273 | va_list va; |
| 2274 | PyObject *func = NULL; |
| 2275 | PyObject *retval; |
| 2276 | |
| 2277 | if (o == NULL || name == NULL) |
| 2278 | return null_error(); |
| 2279 | |
| 2280 | func = _PyObject_GetAttrId(o, name); |
| 2281 | if (func == NULL) { |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 2282 | return NULL; |
| 2283 | } |
| 2284 | va_start(va, format); |
| 2285 | retval = callmethod(func, format, va, 1); |
| 2286 | va_end(va); |
| 2287 | return retval; |
| 2288 | } |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2289 | |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2290 | static PyObject * |
Fred Drake | b0c079e | 2001-10-28 02:39:03 +0000 | [diff] [blame] | 2291 | objargs_mktuple(va_list va) |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2292 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2293 | int i, n = 0; |
| 2294 | va_list countva; |
| 2295 | PyObject *result, *tmp; |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2296 | |
Alexander Belopolsky | f0f4514 | 2010-08-11 17:31:17 +0000 | [diff] [blame] | 2297 | Py_VA_COPY(countva, va); |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2298 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2299 | while (((PyObject *)va_arg(countva, PyObject *)) != NULL) |
| 2300 | ++n; |
| 2301 | result = PyTuple_New(n); |
| 2302 | if (result != NULL && n > 0) { |
| 2303 | for (i = 0; i < n; ++i) { |
| 2304 | tmp = (PyObject *)va_arg(va, PyObject *); |
| 2305 | PyTuple_SET_ITEM(result, i, tmp); |
| 2306 | Py_INCREF(tmp); |
| 2307 | } |
| 2308 | } |
| 2309 | return result; |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2310 | } |
| 2311 | |
| 2312 | PyObject * |
Fred Drake | b0c079e | 2001-10-28 02:39:03 +0000 | [diff] [blame] | 2313 | PyObject_CallMethodObjArgs(PyObject *callable, PyObject *name, ...) |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2314 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2315 | PyObject *args, *tmp; |
| 2316 | va_list vargs; |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2317 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2318 | if (callable == NULL || name == NULL) |
| 2319 | return null_error(); |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2320 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2321 | callable = PyObject_GetAttr(callable, name); |
| 2322 | if (callable == NULL) |
| 2323 | return NULL; |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2324 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2325 | /* count the args */ |
| 2326 | va_start(vargs, name); |
| 2327 | args = objargs_mktuple(vargs); |
| 2328 | va_end(vargs); |
| 2329 | if (args == NULL) { |
| 2330 | Py_DECREF(callable); |
| 2331 | return NULL; |
| 2332 | } |
| 2333 | tmp = PyObject_Call(callable, args, NULL); |
| 2334 | Py_DECREF(args); |
| 2335 | Py_DECREF(callable); |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2336 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2337 | return tmp; |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2338 | } |
| 2339 | |
| 2340 | PyObject * |
Brett Cannon | fd07415 | 2012-04-14 14:10:13 -0400 | [diff] [blame] | 2341 | _PyObject_CallMethodObjIdArgs(PyObject *callable, |
| 2342 | struct _Py_Identifier *name, ...) |
| 2343 | { |
| 2344 | PyObject *args, *tmp; |
| 2345 | va_list vargs; |
| 2346 | |
| 2347 | if (callable == NULL || name == NULL) |
| 2348 | return null_error(); |
| 2349 | |
| 2350 | callable = _PyObject_GetAttrId(callable, name); |
| 2351 | if (callable == NULL) |
| 2352 | return NULL; |
| 2353 | |
| 2354 | /* count the args */ |
| 2355 | va_start(vargs, name); |
| 2356 | args = objargs_mktuple(vargs); |
| 2357 | va_end(vargs); |
| 2358 | if (args == NULL) { |
| 2359 | Py_DECREF(callable); |
| 2360 | return NULL; |
| 2361 | } |
| 2362 | tmp = PyObject_Call(callable, args, NULL); |
| 2363 | Py_DECREF(args); |
| 2364 | Py_DECREF(callable); |
| 2365 | |
| 2366 | return tmp; |
| 2367 | } |
| 2368 | |
| 2369 | PyObject * |
Fred Drake | b0c079e | 2001-10-28 02:39:03 +0000 | [diff] [blame] | 2370 | PyObject_CallFunctionObjArgs(PyObject *callable, ...) |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2371 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2372 | PyObject *args, *tmp; |
| 2373 | va_list vargs; |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2374 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2375 | if (callable == NULL) |
| 2376 | return null_error(); |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2377 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2378 | /* count the args */ |
| 2379 | va_start(vargs, callable); |
| 2380 | args = objargs_mktuple(vargs); |
| 2381 | va_end(vargs); |
| 2382 | if (args == NULL) |
| 2383 | return NULL; |
| 2384 | tmp = PyObject_Call(callable, args, NULL); |
| 2385 | Py_DECREF(args); |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2386 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2387 | return tmp; |
Fred Drake | b421b8c | 2001-10-26 16:21:32 +0000 | [diff] [blame] | 2388 | } |
| 2389 | |
| 2390 | |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2391 | /* isinstance(), issubclass() */ |
| 2392 | |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 2393 | /* abstract_get_bases() has logically 4 return states: |
Barry Warsaw | f16951c | 2002-04-23 22:45:44 +0000 | [diff] [blame] | 2394 | * |
Barry Warsaw | f16951c | 2002-04-23 22:45:44 +0000 | [diff] [blame] | 2395 | * 1. getattr(cls, '__bases__') could raise an AttributeError |
| 2396 | * 2. getattr(cls, '__bases__') could raise some other exception |
| 2397 | * 3. getattr(cls, '__bases__') could return a tuple |
| 2398 | * 4. getattr(cls, '__bases__') could return something other than a tuple |
| 2399 | * |
| 2400 | * Only state #3 is a non-error state and only it returns a non-NULL object |
| 2401 | * (it returns the retrieved tuple). |
| 2402 | * |
| 2403 | * Any raised AttributeErrors are masked by clearing the exception and |
| 2404 | * returning NULL. If an object other than a tuple comes out of __bases__, |
| 2405 | * then again, the return value is NULL. So yes, these two situations |
| 2406 | * produce exactly the same results: NULL is returned and no error is set. |
| 2407 | * |
| 2408 | * If some exception other than AttributeError is raised, then NULL is also |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2409 | * returned, but the exception is not cleared. That's because we want the |
Barry Warsaw | f16951c | 2002-04-23 22:45:44 +0000 | [diff] [blame] | 2410 | * exception to be propagated along. |
| 2411 | * |
| 2412 | * Callers are expected to test for PyErr_Occurred() when the return value |
| 2413 | * is NULL to decide whether a valid exception should be propagated or not. |
| 2414 | * When there's no exception to propagate, it's customary for the caller to |
| 2415 | * set a TypeError. |
| 2416 | */ |
Neil Schemenauer | 6b47129 | 2001-10-18 03:18:43 +0000 | [diff] [blame] | 2417 | static PyObject * |
| 2418 | abstract_get_bases(PyObject *cls) |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2419 | { |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 2420 | _Py_IDENTIFIER(__bases__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2421 | PyObject *bases; |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2422 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2423 | Py_ALLOW_RECURSION |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 2424 | bases = _PyObject_GetAttrId(cls, &PyId___bases__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2425 | Py_END_ALLOW_RECURSION |
| 2426 | if (bases == NULL) { |
| 2427 | if (PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 2428 | PyErr_Clear(); |
| 2429 | return NULL; |
| 2430 | } |
| 2431 | if (!PyTuple_Check(bases)) { |
| 2432 | Py_DECREF(bases); |
| 2433 | return NULL; |
| 2434 | } |
| 2435 | return bases; |
Neil Schemenauer | 6b47129 | 2001-10-18 03:18:43 +0000 | [diff] [blame] | 2436 | } |
| 2437 | |
| 2438 | |
| 2439 | static int |
| 2440 | abstract_issubclass(PyObject *derived, PyObject *cls) |
| 2441 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2442 | PyObject *bases = NULL; |
| 2443 | Py_ssize_t i, n; |
| 2444 | int r = 0; |
Neil Schemenauer | 6b47129 | 2001-10-18 03:18:43 +0000 | [diff] [blame] | 2445 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2446 | while (1) { |
| 2447 | if (derived == cls) |
| 2448 | return 1; |
| 2449 | bases = abstract_get_bases(derived); |
| 2450 | if (bases == NULL) { |
| 2451 | if (PyErr_Occurred()) |
| 2452 | return -1; |
| 2453 | return 0; |
| 2454 | } |
| 2455 | n = PyTuple_GET_SIZE(bases); |
| 2456 | if (n == 0) { |
| 2457 | Py_DECREF(bases); |
| 2458 | return 0; |
| 2459 | } |
| 2460 | /* Avoid recursivity in the single inheritance case */ |
| 2461 | if (n == 1) { |
| 2462 | derived = PyTuple_GET_ITEM(bases, 0); |
| 2463 | Py_DECREF(bases); |
| 2464 | continue; |
| 2465 | } |
| 2466 | for (i = 0; i < n; i++) { |
| 2467 | r = abstract_issubclass(PyTuple_GET_ITEM(bases, i), cls); |
| 2468 | if (r != 0) |
| 2469 | break; |
| 2470 | } |
| 2471 | Py_DECREF(bases); |
| 2472 | return r; |
| 2473 | } |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2474 | } |
| 2475 | |
Walter Dörwald | d9a6ad3 | 2002-12-12 16:41:44 +0000 | [diff] [blame] | 2476 | static int |
| 2477 | check_class(PyObject *cls, const char *error) |
| 2478 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2479 | PyObject *bases = abstract_get_bases(cls); |
| 2480 | if (bases == NULL) { |
| 2481 | /* Do not mask errors. */ |
| 2482 | if (!PyErr_Occurred()) |
| 2483 | PyErr_SetString(PyExc_TypeError, error); |
| 2484 | return 0; |
| 2485 | } |
| 2486 | Py_DECREF(bases); |
| 2487 | return -1; |
Walter Dörwald | d9a6ad3 | 2002-12-12 16:41:44 +0000 | [diff] [blame] | 2488 | } |
| 2489 | |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2490 | static int |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2491 | recursive_isinstance(PyObject *inst, PyObject *cls) |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2492 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2493 | PyObject *icls; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2494 | int retval = 0; |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 2495 | _Py_IDENTIFIER(__class__); |
Guido van Rossum | 03bc7d3 | 2003-02-12 03:32:58 +0000 | [diff] [blame] | 2496 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2497 | if (PyType_Check(cls)) { |
| 2498 | retval = PyObject_TypeCheck(inst, (PyTypeObject *)cls); |
| 2499 | if (retval == 0) { |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 2500 | PyObject *c = _PyObject_GetAttrId(inst, &PyId___class__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2501 | if (c == NULL) { |
Benjamin Peterson | 72288d4 | 2010-11-20 17:21:08 +0000 | [diff] [blame] | 2502 | if (PyErr_ExceptionMatches(PyExc_AttributeError)) |
R. David Murray | 6bb9989 | 2010-11-20 16:33:30 +0000 | [diff] [blame] | 2503 | PyErr_Clear(); |
Benjamin Peterson | 72288d4 | 2010-11-20 17:21:08 +0000 | [diff] [blame] | 2504 | else |
R. David Murray | 6bb9989 | 2010-11-20 16:33:30 +0000 | [diff] [blame] | 2505 | retval = -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2506 | } |
| 2507 | else { |
| 2508 | if (c != (PyObject *)(inst->ob_type) && |
| 2509 | PyType_Check(c)) |
| 2510 | retval = PyType_IsSubtype( |
| 2511 | (PyTypeObject *)c, |
| 2512 | (PyTypeObject *)cls); |
| 2513 | Py_DECREF(c); |
| 2514 | } |
| 2515 | } |
| 2516 | } |
| 2517 | else { |
| 2518 | if (!check_class(cls, |
Benjamin Peterson | e893af5 | 2010-06-28 19:43:42 +0000 | [diff] [blame] | 2519 | "isinstance() arg 2 must be a type or tuple of types")) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2520 | return -1; |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 2521 | icls = _PyObject_GetAttrId(inst, &PyId___class__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2522 | if (icls == NULL) { |
Benjamin Peterson | 72288d4 | 2010-11-20 17:21:08 +0000 | [diff] [blame] | 2523 | if (PyErr_ExceptionMatches(PyExc_AttributeError)) |
R. David Murray | 6bb9989 | 2010-11-20 16:33:30 +0000 | [diff] [blame] | 2524 | PyErr_Clear(); |
Benjamin Peterson | 72288d4 | 2010-11-20 17:21:08 +0000 | [diff] [blame] | 2525 | else |
R. David Murray | 6bb9989 | 2010-11-20 16:33:30 +0000 | [diff] [blame] | 2526 | retval = -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2527 | } |
| 2528 | else { |
| 2529 | retval = abstract_issubclass(icls, cls); |
| 2530 | Py_DECREF(icls); |
| 2531 | } |
| 2532 | } |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2533 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2534 | return retval; |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2535 | } |
| 2536 | |
| 2537 | int |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2538 | PyObject_IsInstance(PyObject *inst, PyObject *cls) |
| 2539 | { |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 2540 | _Py_IDENTIFIER(__instancecheck__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2541 | PyObject *checker; |
Christian Heimes | d5e2b6f | 2008-03-19 21:50:51 +0000 | [diff] [blame] | 2542 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2543 | /* Quick test for an exact match */ |
| 2544 | if (Py_TYPE(inst) == (PyTypeObject *)cls) |
| 2545 | return 1; |
Christian Heimes | d5e2b6f | 2008-03-19 21:50:51 +0000 | [diff] [blame] | 2546 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2547 | if (PyTuple_Check(cls)) { |
| 2548 | Py_ssize_t i; |
| 2549 | Py_ssize_t n; |
| 2550 | int r = 0; |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2551 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2552 | if (Py_EnterRecursiveCall(" in __instancecheck__")) |
| 2553 | return -1; |
| 2554 | n = PyTuple_GET_SIZE(cls); |
| 2555 | for (i = 0; i < n; ++i) { |
| 2556 | PyObject *item = PyTuple_GET_ITEM(cls, i); |
| 2557 | r = PyObject_IsInstance(inst, item); |
| 2558 | if (r != 0) |
| 2559 | /* either found it, or got an error */ |
| 2560 | break; |
| 2561 | } |
| 2562 | Py_LeaveRecursiveCall(); |
| 2563 | return r; |
| 2564 | } |
Benjamin Peterson | 88fe5f9 | 2009-05-16 21:55:24 +0000 | [diff] [blame] | 2565 | |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 2566 | checker = _PyObject_LookupSpecial(cls, &PyId___instancecheck__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2567 | if (checker != NULL) { |
| 2568 | PyObject *res; |
| 2569 | int ok = -1; |
| 2570 | if (Py_EnterRecursiveCall(" in __instancecheck__")) { |
| 2571 | Py_DECREF(checker); |
| 2572 | return ok; |
| 2573 | } |
| 2574 | res = PyObject_CallFunctionObjArgs(checker, inst, NULL); |
| 2575 | Py_LeaveRecursiveCall(); |
| 2576 | Py_DECREF(checker); |
| 2577 | if (res != NULL) { |
| 2578 | ok = PyObject_IsTrue(res); |
| 2579 | Py_DECREF(res); |
| 2580 | } |
| 2581 | return ok; |
| 2582 | } |
| 2583 | else if (PyErr_Occurred()) |
| 2584 | return -1; |
| 2585 | return recursive_isinstance(inst, cls); |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2586 | } |
| 2587 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2588 | static int |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2589 | recursive_issubclass(PyObject *derived, PyObject *cls) |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2590 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2591 | if (PyType_Check(cls) && PyType_Check(derived)) { |
| 2592 | /* Fast path (non-recursive) */ |
| 2593 | return PyType_IsSubtype((PyTypeObject *)derived, (PyTypeObject *)cls); |
| 2594 | } |
| 2595 | if (!check_class(derived, |
| 2596 | "issubclass() arg 1 must be a class")) |
| 2597 | return -1; |
| 2598 | if (!check_class(cls, |
| 2599 | "issubclass() arg 2 must be a class" |
| 2600 | " or tuple of classes")) |
| 2601 | return -1; |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2602 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2603 | return abstract_issubclass(derived, cls); |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2604 | } |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 2605 | |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2606 | int |
| 2607 | PyObject_IsSubclass(PyObject *derived, PyObject *cls) |
| 2608 | { |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 2609 | _Py_IDENTIFIER(__subclasscheck__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2610 | PyObject *checker; |
Georg Brandl | dcfe8e4 | 2009-05-17 08:22:45 +0000 | [diff] [blame] | 2611 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2612 | if (PyTuple_Check(cls)) { |
| 2613 | Py_ssize_t i; |
| 2614 | Py_ssize_t n; |
| 2615 | int r = 0; |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2616 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2617 | if (Py_EnterRecursiveCall(" in __subclasscheck__")) |
| 2618 | return -1; |
| 2619 | n = PyTuple_GET_SIZE(cls); |
| 2620 | for (i = 0; i < n; ++i) { |
| 2621 | PyObject *item = PyTuple_GET_ITEM(cls, i); |
| 2622 | r = PyObject_IsSubclass(derived, item); |
| 2623 | if (r != 0) |
| 2624 | /* either found it, or got an error */ |
| 2625 | break; |
| 2626 | } |
| 2627 | Py_LeaveRecursiveCall(); |
| 2628 | return r; |
| 2629 | } |
Benjamin Peterson | 88fe5f9 | 2009-05-16 21:55:24 +0000 | [diff] [blame] | 2630 | |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 2631 | checker = _PyObject_LookupSpecial(cls, &PyId___subclasscheck__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2632 | if (checker != NULL) { |
| 2633 | PyObject *res; |
| 2634 | int ok = -1; |
| 2635 | if (Py_EnterRecursiveCall(" in __subclasscheck__")) { |
| 2636 | Py_DECREF(checker); |
| 2637 | return ok; |
| 2638 | } |
| 2639 | res = PyObject_CallFunctionObjArgs(checker, derived, NULL); |
| 2640 | Py_LeaveRecursiveCall(); |
| 2641 | Py_DECREF(checker); |
| 2642 | if (res != NULL) { |
| 2643 | ok = PyObject_IsTrue(res); |
| 2644 | Py_DECREF(res); |
| 2645 | } |
| 2646 | return ok; |
| 2647 | } |
| 2648 | else if (PyErr_Occurred()) |
| 2649 | return -1; |
| 2650 | return recursive_issubclass(derived, cls); |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2651 | } |
| 2652 | |
| 2653 | int |
| 2654 | _PyObject_RealIsInstance(PyObject *inst, PyObject *cls) |
| 2655 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2656 | return recursive_isinstance(inst, cls); |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2657 | } |
| 2658 | |
| 2659 | int |
| 2660 | _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls) |
| 2661 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2662 | return recursive_issubclass(derived, cls); |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2663 | } |
| 2664 | |
| 2665 | |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 2666 | PyObject * |
| 2667 | PyObject_GetIter(PyObject *o) |
| 2668 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2669 | PyTypeObject *t = o->ob_type; |
| 2670 | getiterfunc f = NULL; |
| 2671 | f = t->tp_iter; |
| 2672 | if (f == NULL) { |
| 2673 | if (PySequence_Check(o)) |
| 2674 | return PySeqIter_New(o); |
| 2675 | return type_error("'%.200s' object is not iterable", o); |
| 2676 | } |
| 2677 | else { |
| 2678 | PyObject *res = (*f)(o); |
| 2679 | if (res != NULL && !PyIter_Check(res)) { |
| 2680 | PyErr_Format(PyExc_TypeError, |
| 2681 | "iter() returned non-iterator " |
| 2682 | "of type '%.100s'", |
| 2683 | res->ob_type->tp_name); |
| 2684 | Py_DECREF(res); |
| 2685 | res = NULL; |
| 2686 | } |
| 2687 | return res; |
| 2688 | } |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 2689 | } |
| 2690 | |
Tim Peters | f4848da | 2001-05-05 00:14:56 +0000 | [diff] [blame] | 2691 | /* Return next item. |
| 2692 | * If an error occurs, return NULL. PyErr_Occurred() will be true. |
| 2693 | * If the iteration terminates normally, return NULL and clear the |
| 2694 | * PyExc_StopIteration exception (if it was set). PyErr_Occurred() |
| 2695 | * will be false. |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2696 | * Else return the next object. PyErr_Occurred() will be false. |
Tim Peters | f4848da | 2001-05-05 00:14:56 +0000 | [diff] [blame] | 2697 | */ |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 2698 | PyObject * |
| 2699 | PyIter_Next(PyObject *iter) |
| 2700 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2701 | PyObject *result; |
| 2702 | result = (*iter->ob_type->tp_iternext)(iter); |
| 2703 | if (result == NULL && |
| 2704 | PyErr_Occurred() && |
| 2705 | PyErr_ExceptionMatches(PyExc_StopIteration)) |
| 2706 | PyErr_Clear(); |
| 2707 | return result; |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 2708 | } |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2709 | |
| 2710 | |
| 2711 | /* |
| 2712 | * Flatten a sequence of bytes() objects into a C array of |
| 2713 | * NULL terminated string pointers with a NULL char* terminating the array. |
| 2714 | * (ie: an argv or env list) |
| 2715 | * |
| 2716 | * Memory allocated for the returned list is allocated using malloc() and MUST |
| 2717 | * be freed by the caller using a free() loop or _Py_FreeCharPArray(). |
| 2718 | */ |
| 2719 | char *const * |
| 2720 | _PySequence_BytesToCharpArray(PyObject* self) |
| 2721 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2722 | char **array; |
| 2723 | Py_ssize_t i, argc; |
| 2724 | PyObject *item = NULL; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2725 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2726 | argc = PySequence_Size(self); |
| 2727 | if (argc == -1) |
| 2728 | return NULL; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2729 | |
Stefan Krah | 7cacd2e | 2012-08-21 08:16:09 +0200 | [diff] [blame] | 2730 | assert(argc >= 0); |
| 2731 | |
| 2732 | if ((size_t)argc > (PY_SSIZE_T_MAX-sizeof(char *)) / sizeof(char *)) { |
| 2733 | PyErr_NoMemory(); |
| 2734 | return NULL; |
| 2735 | } |
| 2736 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2737 | array = malloc((argc + 1) * sizeof(char *)); |
| 2738 | if (array == NULL) { |
| 2739 | PyErr_NoMemory(); |
| 2740 | return NULL; |
| 2741 | } |
| 2742 | for (i = 0; i < argc; ++i) { |
| 2743 | char *data; |
| 2744 | item = PySequence_GetItem(self, i); |
Stefan Krah | fd24f9e | 2012-08-20 11:04:24 +0200 | [diff] [blame] | 2745 | if (item == NULL) { |
| 2746 | /* NULL terminate before freeing. */ |
| 2747 | array[i] = NULL; |
| 2748 | goto fail; |
| 2749 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2750 | data = PyBytes_AsString(item); |
| 2751 | if (data == NULL) { |
| 2752 | /* NULL terminate before freeing. */ |
| 2753 | array[i] = NULL; |
| 2754 | goto fail; |
| 2755 | } |
| 2756 | array[i] = strdup(data); |
| 2757 | if (!array[i]) { |
| 2758 | PyErr_NoMemory(); |
| 2759 | goto fail; |
| 2760 | } |
| 2761 | Py_DECREF(item); |
| 2762 | } |
| 2763 | array[argc] = NULL; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2764 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2765 | return array; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2766 | |
| 2767 | fail: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2768 | Py_XDECREF(item); |
| 2769 | _Py_FreeCharPArray(array); |
| 2770 | return NULL; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2771 | } |
| 2772 | |
| 2773 | |
| 2774 | /* Free's a NULL terminated char** array of C strings. */ |
| 2775 | void |
| 2776 | _Py_FreeCharPArray(char *const array[]) |
| 2777 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2778 | Py_ssize_t i; |
| 2779 | for (i = 0; array[i] != NULL; ++i) { |
| 2780 | free(array[i]); |
| 2781 | } |
| 2782 | free((void*)array); |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2783 | } |