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" |
Victor Stinner | 4a21e57 | 2020-04-15 02:35:41 +0200 | [diff] [blame^] | 4 | #include "pycore_abstract.h" // _PyIndex_Check() |
| 5 | #include "pycore_ceval.h" // _Py_EnterRecursiveCall() |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 6 | #include "pycore_pyerrors.h" |
Victor Stinner | 4a21e57 | 2020-04-15 02:35:41 +0200 | [diff] [blame^] | 7 | #include "pycore_pystate.h" // _PyThreadState_GET() |
Guido van Rossum | fa0b6ab | 1998-05-22 15:23:36 +0000 | [diff] [blame] | 8 | #include <ctype.h> |
Victor Stinner | 4a21e57 | 2020-04-15 02:35:41 +0200 | [diff] [blame^] | 9 | #include <stddef.h> // offsetof() |
Tim Peters | 64b5ce3 | 2001-09-10 20:52:51 +0000 | [diff] [blame] | 10 | #include "longintrepr.h" |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 11 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 12 | |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 13 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 14 | /* Shorthands to return certain errors */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 15 | |
| 16 | static PyObject * |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 17 | type_error(const char *msg, PyObject *obj) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 18 | { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 19 | PyErr_Format(PyExc_TypeError, msg, Py_TYPE(obj)->tp_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 20 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 21 | } |
| 22 | |
Guido van Rossum | 052b7e1 | 1996-11-11 15:08:19 +0000 | [diff] [blame] | 23 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 24 | null_error(void) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 25 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 26 | if (!PyErr_Occurred()) |
| 27 | PyErr_SetString(PyExc_SystemError, |
| 28 | "null argument to internal routine"); |
| 29 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 30 | } |
| 31 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 32 | /* Operations on any object */ |
| 33 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 34 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 35 | PyObject_Type(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 36 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 37 | PyObject *v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 38 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 39 | if (o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 40 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 41 | } |
| 42 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 43 | v = (PyObject *)Py_TYPE(o); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 44 | Py_INCREF(v); |
| 45 | return v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 46 | } |
| 47 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 48 | Py_ssize_t |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 49 | PyObject_Size(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 50 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 51 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 52 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 53 | if (o == NULL) { |
| 54 | null_error(); |
| 55 | return -1; |
| 56 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 57 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 58 | m = Py_TYPE(o)->tp_as_sequence; |
Serhiy Storchaka | 813f943 | 2017-04-16 09:21:44 +0300 | [diff] [blame] | 59 | if (m && m->sq_length) { |
| 60 | Py_ssize_t len = m->sq_length(o); |
| 61 | assert(len >= 0 || PyErr_Occurred()); |
| 62 | return len; |
| 63 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 64 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 65 | return PyMapping_Size(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 66 | } |
| 67 | |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 68 | #undef PyObject_Length |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 69 | Py_ssize_t |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 70 | PyObject_Length(PyObject *o) |
| 71 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 72 | return PyObject_Size(o); |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 73 | } |
| 74 | #define PyObject_Length PyObject_Size |
| 75 | |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 76 | int |
| 77 | _PyObject_HasLen(PyObject *o) { |
| 78 | return (Py_TYPE(o)->tp_as_sequence && Py_TYPE(o)->tp_as_sequence->sq_length) || |
| 79 | (Py_TYPE(o)->tp_as_mapping && Py_TYPE(o)->tp_as_mapping->mp_length); |
| 80 | } |
Raymond Hettinger | 6b27cda | 2005-09-24 21:23:05 +0000 | [diff] [blame] | 81 | |
Christian Heimes | 255f53b | 2007-12-08 15:33:56 +0000 | [diff] [blame] | 82 | /* The length hint function returns a non-negative value from o.__len__() |
Armin Ronacher | 74b38b1 | 2012-10-07 10:29:32 +0200 | [diff] [blame] | 83 | or o.__length_hint__(). If those methods aren't found the defaultvalue is |
| 84 | returned. If one of the calls fails with an exception other than TypeError |
| 85 | this function returns -1. |
Christian Heimes | 255f53b | 2007-12-08 15:33:56 +0000 | [diff] [blame] | 86 | */ |
| 87 | |
| 88 | Py_ssize_t |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 89 | PyObject_LengthHint(PyObject *o, Py_ssize_t defaultvalue) |
Christian Heimes | 255f53b | 2007-12-08 15:33:56 +0000 | [diff] [blame] | 90 | { |
Christian Heimes | b70e8a1 | 2012-10-06 17:16:39 +0200 | [diff] [blame] | 91 | PyObject *hint, *result; |
Christian Heimes | 6314d16 | 2012-10-06 17:13:29 +0200 | [diff] [blame] | 92 | Py_ssize_t res; |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 93 | _Py_IDENTIFIER(__length_hint__); |
Serhiy Storchaka | f740d46 | 2013-10-24 23:19:51 +0300 | [diff] [blame] | 94 | if (_PyObject_HasLen(o)) { |
| 95 | res = PyObject_Length(o); |
Serhiy Storchaka | 813f943 | 2017-04-16 09:21:44 +0300 | [diff] [blame] | 96 | if (res < 0) { |
| 97 | assert(PyErr_Occurred()); |
Serhiy Storchaka | f740d46 | 2013-10-24 23:19:51 +0300 | [diff] [blame] | 98 | if (!PyErr_ExceptionMatches(PyExc_TypeError)) { |
| 99 | return -1; |
| 100 | } |
| 101 | PyErr_Clear(); |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 102 | } |
Serhiy Storchaka | f740d46 | 2013-10-24 23:19:51 +0300 | [diff] [blame] | 103 | else { |
| 104 | return res; |
| 105 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 106 | } |
Christian Heimes | 6314d16 | 2012-10-06 17:13:29 +0200 | [diff] [blame] | 107 | hint = _PyObject_LookupSpecial(o, &PyId___length_hint__); |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 108 | if (hint == NULL) { |
| 109 | if (PyErr_Occurred()) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 110 | return -1; |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 111 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 112 | return defaultvalue; |
| 113 | } |
Victor Stinner | f17c3de | 2016-12-06 18:46:19 +0100 | [diff] [blame] | 114 | result = _PyObject_CallNoArg(hint); |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 115 | Py_DECREF(hint); |
| 116 | if (result == NULL) { |
| 117 | if (PyErr_ExceptionMatches(PyExc_TypeError)) { |
| 118 | PyErr_Clear(); |
| 119 | return defaultvalue; |
| 120 | } |
| 121 | return -1; |
| 122 | } |
| 123 | else if (result == Py_NotImplemented) { |
| 124 | Py_DECREF(result); |
| 125 | return defaultvalue; |
| 126 | } |
| 127 | if (!PyLong_Check(result)) { |
Armin Ronacher | 74b38b1 | 2012-10-07 10:29:32 +0200 | [diff] [blame] | 128 | PyErr_Format(PyExc_TypeError, "__length_hint__ must be an integer, not %.100s", |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 129 | Py_TYPE(result)->tp_name); |
| 130 | Py_DECREF(result); |
| 131 | return -1; |
| 132 | } |
Armin Ronacher | 74b38b1 | 2012-10-07 10:29:32 +0200 | [diff] [blame] | 133 | res = PyLong_AsSsize_t(result); |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 134 | Py_DECREF(result); |
Armin Ronacher | 74b38b1 | 2012-10-07 10:29:32 +0200 | [diff] [blame] | 135 | if (res < 0 && PyErr_Occurred()) { |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 136 | return -1; |
| 137 | } |
Armin Ronacher | 74b38b1 | 2012-10-07 10:29:32 +0200 | [diff] [blame] | 138 | if (res < 0) { |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 139 | PyErr_Format(PyExc_ValueError, "__length_hint__() should return >= 0"); |
| 140 | return -1; |
| 141 | } |
Armin Ronacher | 74b38b1 | 2012-10-07 10:29:32 +0200 | [diff] [blame] | 142 | return res; |
Raymond Hettinger | 6b27cda | 2005-09-24 21:23:05 +0000 | [diff] [blame] | 143 | } |
| 144 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 145 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 146 | PyObject_GetItem(PyObject *o, PyObject *key) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 147 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 148 | PyMappingMethods *m; |
Ivan Levkivskyi | ac28147 | 2019-02-17 23:13:46 +0000 | [diff] [blame] | 149 | PySequenceMethods *ms; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 150 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 151 | if (o == NULL || key == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 152 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 153 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 154 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 155 | m = Py_TYPE(o)->tp_as_mapping; |
Victor Stinner | e20310f | 2015-11-05 13:56:58 +0100 | [diff] [blame] | 156 | if (m && m->mp_subscript) { |
| 157 | PyObject *item = m->mp_subscript(o, key); |
| 158 | assert((item != NULL) ^ (PyErr_Occurred() != NULL)); |
| 159 | return item; |
| 160 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 161 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 162 | ms = Py_TYPE(o)->tp_as_sequence; |
Ivan Levkivskyi | ac28147 | 2019-02-17 23:13:46 +0000 | [diff] [blame] | 163 | if (ms && ms->sq_item) { |
Victor Stinner | a15e260 | 2020-04-08 02:01:56 +0200 | [diff] [blame] | 164 | if (_PyIndex_Check(key)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 165 | Py_ssize_t key_value; |
| 166 | key_value = PyNumber_AsSsize_t(key, PyExc_IndexError); |
| 167 | if (key_value == -1 && PyErr_Occurred()) |
| 168 | return NULL; |
| 169 | return PySequence_GetItem(o, key_value); |
| 170 | } |
Ivan Levkivskyi | ac28147 | 2019-02-17 23:13:46 +0000 | [diff] [blame] | 171 | else { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 172 | return type_error("sequence index must " |
| 173 | "be integer, not '%.200s'", key); |
Ivan Levkivskyi | ac28147 | 2019-02-17 23:13:46 +0000 | [diff] [blame] | 174 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 175 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 176 | |
Ivan Levkivskyi | 2b5fd1e | 2017-12-14 23:32:56 +0100 | [diff] [blame] | 177 | if (PyType_Check(o)) { |
Jeroen Demeyer | 196a530 | 2019-07-04 12:31:34 +0200 | [diff] [blame] | 178 | PyObject *meth, *result; |
Ivan Levkivskyi | 2b5fd1e | 2017-12-14 23:32:56 +0100 | [diff] [blame] | 179 | _Py_IDENTIFIER(__class_getitem__); |
Victor Stinner | a15e260 | 2020-04-08 02:01:56 +0200 | [diff] [blame] | 180 | |
Guido van Rossum | 48b069a | 2020-04-07 09:50:06 -0700 | [diff] [blame] | 181 | // Special case type[int], but disallow other types so str[int] fails |
| 182 | if ((PyTypeObject*)o == &PyType_Type) { |
| 183 | return Py_GenericAlias(o, key); |
| 184 | } |
| 185 | |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 186 | if (_PyObject_LookupAttrId(o, &PyId___class_getitem__, &meth) < 0) { |
| 187 | return NULL; |
| 188 | } |
Ivan Levkivskyi | 2b5fd1e | 2017-12-14 23:32:56 +0100 | [diff] [blame] | 189 | if (meth) { |
Petr Viktorin | ffd9753 | 2020-02-11 17:46:57 +0100 | [diff] [blame] | 190 | result = PyObject_CallOneArg(meth, key); |
Ivan Levkivskyi | 2b5fd1e | 2017-12-14 23:32:56 +0100 | [diff] [blame] | 191 | Py_DECREF(meth); |
| 192 | return result; |
| 193 | } |
Ivan Levkivskyi | 2b5fd1e | 2017-12-14 23:32:56 +0100 | [diff] [blame] | 194 | } |
| 195 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 196 | return type_error("'%.200s' object is not subscriptable", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 200 | PyObject_SetItem(PyObject *o, PyObject *key, PyObject *value) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 201 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 202 | PyMappingMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 203 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 204 | if (o == NULL || key == NULL || value == NULL) { |
| 205 | null_error(); |
| 206 | return -1; |
| 207 | } |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 208 | m = Py_TYPE(o)->tp_as_mapping; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 209 | if (m && m->mp_ass_subscript) |
| 210 | return m->mp_ass_subscript(o, key, value); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 211 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 212 | if (Py_TYPE(o)->tp_as_sequence) { |
Victor Stinner | a15e260 | 2020-04-08 02:01:56 +0200 | [diff] [blame] | 213 | if (_PyIndex_Check(key)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 214 | Py_ssize_t key_value; |
| 215 | key_value = PyNumber_AsSsize_t(key, PyExc_IndexError); |
| 216 | if (key_value == -1 && PyErr_Occurred()) |
| 217 | return -1; |
| 218 | return PySequence_SetItem(o, key_value, value); |
| 219 | } |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 220 | else if (Py_TYPE(o)->tp_as_sequence->sq_ass_item) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 221 | type_error("sequence index must be " |
| 222 | "integer, not '%.200s'", key); |
| 223 | return -1; |
| 224 | } |
| 225 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 226 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 227 | type_error("'%.200s' object does not support item assignment", o); |
| 228 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 229 | } |
| 230 | |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 231 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 232 | PyObject_DelItem(PyObject *o, PyObject *key) |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 233 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 234 | PyMappingMethods *m; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 235 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 236 | if (o == NULL || key == NULL) { |
| 237 | null_error(); |
| 238 | return -1; |
| 239 | } |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 240 | m = Py_TYPE(o)->tp_as_mapping; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 241 | if (m && m->mp_ass_subscript) |
| 242 | return m->mp_ass_subscript(o, key, (PyObject*)NULL); |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 243 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 244 | if (Py_TYPE(o)->tp_as_sequence) { |
Victor Stinner | a15e260 | 2020-04-08 02:01:56 +0200 | [diff] [blame] | 245 | if (_PyIndex_Check(key)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 246 | Py_ssize_t key_value; |
| 247 | key_value = PyNumber_AsSsize_t(key, PyExc_IndexError); |
| 248 | if (key_value == -1 && PyErr_Occurred()) |
| 249 | return -1; |
| 250 | return PySequence_DelItem(o, key_value); |
| 251 | } |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 252 | else if (Py_TYPE(o)->tp_as_sequence->sq_ass_item) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 253 | type_error("sequence index must be " |
| 254 | "integer, not '%.200s'", key); |
| 255 | return -1; |
| 256 | } |
| 257 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 258 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 259 | type_error("'%.200s' object does not support item deletion", o); |
| 260 | return -1; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 261 | } |
| 262 | |
Martin v. Löwis | b0d71d0 | 2002-01-05 10:50:30 +0000 | [diff] [blame] | 263 | int |
Serhiy Storchaka | c679227 | 2013-10-19 21:03:34 +0300 | [diff] [blame] | 264 | PyObject_DelItemString(PyObject *o, const char *key) |
Martin v. Löwis | b0d71d0 | 2002-01-05 10:50:30 +0000 | [diff] [blame] | 265 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 266 | PyObject *okey; |
| 267 | int ret; |
Martin v. Löwis | b0d71d0 | 2002-01-05 10:50:30 +0000 | [diff] [blame] | 268 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 269 | if (o == NULL || key == NULL) { |
| 270 | null_error(); |
| 271 | return -1; |
| 272 | } |
| 273 | okey = PyUnicode_FromString(key); |
| 274 | if (okey == NULL) |
| 275 | return -1; |
| 276 | ret = PyObject_DelItem(o, okey); |
| 277 | Py_DECREF(okey); |
| 278 | return ret; |
Martin v. Löwis | b0d71d0 | 2002-01-05 10:50:30 +0000 | [diff] [blame] | 279 | } |
| 280 | |
Victor Stinner | ef5c615 | 2020-04-08 01:13:53 +0200 | [diff] [blame] | 281 | |
| 282 | /* Return 1 if the getbuffer function is available, otherwise return 0. */ |
| 283 | int |
| 284 | PyObject_CheckBuffer(PyObject *obj) |
| 285 | { |
| 286 | PyBufferProcs *tp_as_buffer = Py_TYPE(obj)->tp_as_buffer; |
| 287 | return (tp_as_buffer != NULL && tp_as_buffer->bf_getbuffer != NULL); |
| 288 | } |
| 289 | |
| 290 | |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 291 | /* 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] | 292 | 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] | 293 | */ |
Thomas Wouters | 73e5a5b | 2006-06-08 15:35:45 +0000 | [diff] [blame] | 294 | int |
Jeremy Hylton | 89c3a22 | 2001-11-09 21:59:42 +0000 | [diff] [blame] | 295 | PyObject_CheckReadBuffer(PyObject *obj) |
| 296 | { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 297 | PyBufferProcs *pb = Py_TYPE(obj)->tp_as_buffer; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 298 | Py_buffer view; |
Jeremy Hylton | 89c3a22 | 2001-11-09 21:59:42 +0000 | [diff] [blame] | 299 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 300 | if (pb == NULL || |
| 301 | pb->bf_getbuffer == NULL) |
| 302 | return 0; |
| 303 | if ((*pb->bf_getbuffer)(obj, &view, PyBUF_SIMPLE) == -1) { |
| 304 | PyErr_Clear(); |
| 305 | return 0; |
| 306 | } |
| 307 | PyBuffer_Release(&view); |
| 308 | return 1; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 309 | } |
| 310 | |
Serhiy Storchaka | 460bd0d | 2016-11-20 12:16:46 +0200 | [diff] [blame] | 311 | static int |
| 312 | as_read_buffer(PyObject *obj, const void **buffer, Py_ssize_t *buffer_len) |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 313 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 314 | Py_buffer view; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 315 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 316 | if (obj == NULL || buffer == NULL || buffer_len == NULL) { |
| 317 | null_error(); |
| 318 | return -1; |
| 319 | } |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 320 | if (PyObject_GetBuffer(obj, &view, PyBUF_SIMPLE) != 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 321 | return -1; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 322 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 323 | *buffer = view.buf; |
| 324 | *buffer_len = view.len; |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 325 | PyBuffer_Release(&view); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 326 | return 0; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 327 | } |
| 328 | |
Serhiy Storchaka | 460bd0d | 2016-11-20 12:16:46 +0200 | [diff] [blame] | 329 | int |
| 330 | PyObject_AsCharBuffer(PyObject *obj, |
| 331 | const char **buffer, |
| 332 | Py_ssize_t *buffer_len) |
| 333 | { |
| 334 | return as_read_buffer(obj, (const void **)buffer, buffer_len); |
| 335 | } |
| 336 | |
| 337 | int PyObject_AsReadBuffer(PyObject *obj, |
| 338 | const void **buffer, |
| 339 | Py_ssize_t *buffer_len) |
| 340 | { |
| 341 | return as_read_buffer(obj, buffer, buffer_len); |
| 342 | } |
| 343 | |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 344 | int PyObject_AsWriteBuffer(PyObject *obj, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 345 | void **buffer, |
| 346 | Py_ssize_t *buffer_len) |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 347 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 348 | PyBufferProcs *pb; |
| 349 | Py_buffer view; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 350 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 351 | if (obj == NULL || buffer == NULL || buffer_len == NULL) { |
| 352 | null_error(); |
| 353 | return -1; |
| 354 | } |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 355 | pb = Py_TYPE(obj)->tp_as_buffer; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 356 | if (pb == NULL || |
| 357 | pb->bf_getbuffer == NULL || |
| 358 | ((*pb->bf_getbuffer)(obj, &view, PyBUF_WRITABLE) != 0)) { |
| 359 | PyErr_SetString(PyExc_TypeError, |
R David Murray | 861470c | 2014-10-05 11:47:01 -0400 | [diff] [blame] | 360 | "expected a writable bytes-like object"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 361 | return -1; |
| 362 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 363 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 364 | *buffer = view.buf; |
| 365 | *buffer_len = view.len; |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 366 | PyBuffer_Release(&view); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 367 | return 0; |
Guido van Rossum | 4c08d55 | 2000-03-10 22:55:18 +0000 | [diff] [blame] | 368 | } |
| 369 | |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 370 | /* Buffer C-API for Python 3.0 */ |
| 371 | |
| 372 | int |
Travis E. Oliphant | 8ae62b6 | 2007-09-23 02:00:13 +0000 | [diff] [blame] | 373 | PyObject_GetBuffer(PyObject *obj, Py_buffer *view, int flags) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 374 | { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 375 | PyBufferProcs *pb = Py_TYPE(obj)->tp_as_buffer; |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 376 | |
| 377 | if (pb == NULL || pb->bf_getbuffer == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 378 | PyErr_Format(PyExc_TypeError, |
R David Murray | 861470c | 2014-10-05 11:47:01 -0400 | [diff] [blame] | 379 | "a bytes-like object is required, not '%.100s'", |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 380 | Py_TYPE(obj)->tp_name); |
| 381 | return -1; |
| 382 | } |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 383 | return (*pb->bf_getbuffer)(obj, view, flags); |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 384 | } |
| 385 | |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 386 | static int |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 387 | _IsFortranContiguous(const Py_buffer *view) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 388 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 389 | Py_ssize_t sd, dim; |
| 390 | int i; |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 391 | |
Stefan Krah | 363af44 | 2015-02-01 14:53:54 +0100 | [diff] [blame] | 392 | /* 1) len = product(shape) * itemsize |
| 393 | 2) itemsize > 0 |
| 394 | 3) len = 0 <==> exists i: shape[i] = 0 */ |
| 395 | if (view->len == 0) return 1; |
| 396 | if (view->strides == NULL) { /* C-contiguous by definition */ |
| 397 | /* Trivially F-contiguous */ |
| 398 | if (view->ndim <= 1) return 1; |
| 399 | |
| 400 | /* ndim > 1 implies shape != NULL */ |
| 401 | assert(view->shape != NULL); |
| 402 | |
| 403 | /* Effectively 1-d */ |
| 404 | sd = 0; |
| 405 | for (i=0; i<view->ndim; i++) { |
| 406 | if (view->shape[i] > 1) sd += 1; |
| 407 | } |
| 408 | return sd <= 1; |
| 409 | } |
| 410 | |
| 411 | /* strides != NULL implies both of these */ |
| 412 | assert(view->ndim > 0); |
| 413 | assert(view->shape != NULL); |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 414 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 415 | sd = view->itemsize; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 416 | for (i=0; i<view->ndim; i++) { |
| 417 | dim = view->shape[i]; |
Stefan Krah | 363af44 | 2015-02-01 14:53:54 +0100 | [diff] [blame] | 418 | if (dim > 1 && view->strides[i] != sd) { |
| 419 | return 0; |
| 420 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 421 | sd *= dim; |
| 422 | } |
| 423 | return 1; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 424 | } |
| 425 | |
| 426 | static int |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 427 | _IsCContiguous(const Py_buffer *view) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 428 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 429 | Py_ssize_t sd, dim; |
| 430 | int i; |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 431 | |
Stefan Krah | 363af44 | 2015-02-01 14:53:54 +0100 | [diff] [blame] | 432 | /* 1) len = product(shape) * itemsize |
| 433 | 2) itemsize > 0 |
| 434 | 3) len = 0 <==> exists i: shape[i] = 0 */ |
| 435 | if (view->len == 0) return 1; |
| 436 | if (view->strides == NULL) return 1; /* C-contiguous by definition */ |
| 437 | |
| 438 | /* strides != NULL implies both of these */ |
| 439 | assert(view->ndim > 0); |
| 440 | assert(view->shape != NULL); |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 441 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 442 | sd = view->itemsize; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 443 | for (i=view->ndim-1; i>=0; i--) { |
| 444 | dim = view->shape[i]; |
Stefan Krah | 363af44 | 2015-02-01 14:53:54 +0100 | [diff] [blame] | 445 | if (dim > 1 && view->strides[i] != sd) { |
| 446 | return 0; |
| 447 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 448 | sd *= dim; |
| 449 | } |
| 450 | return 1; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 451 | } |
| 452 | |
| 453 | int |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 454 | PyBuffer_IsContiguous(const Py_buffer *view, char order) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 455 | { |
| 456 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 457 | if (view->suboffsets != NULL) return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 458 | |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 459 | if (order == 'C') |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 460 | return _IsCContiguous(view); |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 461 | else if (order == 'F') |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 462 | return _IsFortranContiguous(view); |
Stefan Krah | 9a2d99e | 2012-02-25 12:24:21 +0100 | [diff] [blame] | 463 | else if (order == 'A') |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 464 | return (_IsCContiguous(view) || _IsFortranContiguous(view)); |
| 465 | return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 469 | void* |
Travis E. Oliphant | 8ae62b6 | 2007-09-23 02:00:13 +0000 | [diff] [blame] | 470 | PyBuffer_GetPointer(Py_buffer *view, Py_ssize_t *indices) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 471 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 472 | char* pointer; |
| 473 | int i; |
| 474 | pointer = (char *)view->buf; |
| 475 | for (i = 0; i < view->ndim; i++) { |
| 476 | pointer += view->strides[i]*indices[i]; |
| 477 | if ((view->suboffsets != NULL) && (view->suboffsets[i] >= 0)) { |
| 478 | pointer = *((char**)pointer) + view->suboffsets[i]; |
| 479 | } |
| 480 | } |
| 481 | return (void*)pointer; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 485 | void |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 486 | _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] | 487 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 488 | int k; |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 489 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 490 | for (k=0; k<nd; k++) { |
| 491 | if (index[k] < shape[k]-1) { |
| 492 | index[k]++; |
| 493 | break; |
| 494 | } |
| 495 | else { |
| 496 | index[k] = 0; |
| 497 | } |
| 498 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 499 | } |
| 500 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 501 | void |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 502 | _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] | 503 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 504 | int k; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 505 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 506 | for (k=nd-1; k>=0; k--) { |
| 507 | if (index[k] < shape[k]-1) { |
| 508 | index[k]++; |
| 509 | break; |
| 510 | } |
| 511 | else { |
| 512 | index[k] = 0; |
| 513 | } |
| 514 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 515 | } |
| 516 | |
Joannah Nanjekye | 9e66aba | 2019-08-20 11:46:36 -0300 | [diff] [blame] | 517 | Py_ssize_t |
| 518 | PyBuffer_SizeFromFormat(const char *format) |
| 519 | { |
| 520 | PyObject *structmodule = NULL; |
| 521 | PyObject *calcsize = NULL; |
| 522 | PyObject *res = NULL; |
| 523 | PyObject *fmt = NULL; |
| 524 | Py_ssize_t itemsize = -1; |
| 525 | |
| 526 | structmodule = PyImport_ImportModule("struct"); |
| 527 | if (structmodule == NULL) { |
| 528 | return itemsize; |
| 529 | } |
| 530 | |
| 531 | calcsize = PyObject_GetAttrString(structmodule, "calcsize"); |
| 532 | if (calcsize == NULL) { |
| 533 | goto done; |
| 534 | } |
| 535 | |
| 536 | fmt = PyUnicode_FromString(format); |
| 537 | if (fmt == NULL) { |
| 538 | goto done; |
| 539 | } |
| 540 | |
| 541 | res = PyObject_CallFunctionObjArgs(calcsize, fmt, NULL); |
| 542 | if (res == NULL) { |
| 543 | goto done; |
| 544 | } |
| 545 | |
| 546 | itemsize = PyLong_AsSsize_t(res); |
| 547 | if (itemsize < 0) { |
| 548 | goto done; |
| 549 | } |
| 550 | |
| 551 | done: |
| 552 | Py_DECREF(structmodule); |
| 553 | Py_XDECREF(calcsize); |
| 554 | Py_XDECREF(fmt); |
| 555 | Py_XDECREF(res); |
| 556 | return itemsize; |
| 557 | } |
| 558 | |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 559 | int |
Travis E. Oliphant | 8ae62b6 | 2007-09-23 02:00:13 +0000 | [diff] [blame] | 560 | 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] | 561 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 562 | int k; |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 563 | void (*addone)(int, Py_ssize_t *, const Py_ssize_t *); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 564 | Py_ssize_t *indices, elements; |
| 565 | char *src, *ptr; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 566 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 567 | if (len > view->len) { |
| 568 | len = view->len; |
| 569 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 570 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 571 | if (PyBuffer_IsContiguous(view, fort)) { |
| 572 | /* simplest copy is all that is needed */ |
| 573 | memcpy(view->buf, buf, len); |
| 574 | return 0; |
| 575 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 576 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 577 | /* Otherwise a more elaborate scheme is needed */ |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 578 | |
Stefan Krah | 7213fcc | 2015-02-01 16:19:23 +0100 | [diff] [blame] | 579 | /* view->ndim <= 64 */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 580 | indices = (Py_ssize_t *)PyMem_Malloc(sizeof(Py_ssize_t)*(view->ndim)); |
| 581 | if (indices == NULL) { |
| 582 | PyErr_NoMemory(); |
| 583 | return -1; |
| 584 | } |
| 585 | for (k=0; k<view->ndim;k++) { |
| 586 | indices[k] = 0; |
| 587 | } |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 588 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 589 | if (fort == 'F') { |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 590 | addone = _Py_add_one_to_index_F; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 591 | } |
| 592 | else { |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 593 | addone = _Py_add_one_to_index_C; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 594 | } |
| 595 | src = buf; |
| 596 | /* XXX : This is not going to be the fastest code in the world |
| 597 | several optimizations are possible. |
| 598 | */ |
| 599 | elements = len / view->itemsize; |
| 600 | while (elements--) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 601 | ptr = PyBuffer_GetPointer(view, indices); |
| 602 | memcpy(ptr, src, view->itemsize); |
| 603 | src += view->itemsize; |
Stefan Krah | 7213fcc | 2015-02-01 16:19:23 +0100 | [diff] [blame] | 604 | addone(view->ndim, indices, view->shape); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 605 | } |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 606 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 607 | PyMem_Free(indices); |
| 608 | return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 609 | } |
| 610 | |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 611 | int PyObject_CopyData(PyObject *dest, PyObject *src) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 612 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 613 | Py_buffer view_dest, view_src; |
| 614 | int k; |
| 615 | Py_ssize_t *indices, elements; |
| 616 | char *dptr, *sptr; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 617 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 618 | if (!PyObject_CheckBuffer(dest) || |
| 619 | !PyObject_CheckBuffer(src)) { |
| 620 | PyErr_SetString(PyExc_TypeError, |
R David Murray | 861470c | 2014-10-05 11:47:01 -0400 | [diff] [blame] | 621 | "both destination and source must be "\ |
| 622 | "bytes-like objects"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 623 | return -1; |
| 624 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 625 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 626 | if (PyObject_GetBuffer(dest, &view_dest, PyBUF_FULL) != 0) return -1; |
| 627 | if (PyObject_GetBuffer(src, &view_src, PyBUF_FULL_RO) != 0) { |
| 628 | PyBuffer_Release(&view_dest); |
| 629 | return -1; |
| 630 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 631 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 632 | if (view_dest.len < view_src.len) { |
| 633 | PyErr_SetString(PyExc_BufferError, |
| 634 | "destination is too small to receive data from source"); |
| 635 | PyBuffer_Release(&view_dest); |
| 636 | PyBuffer_Release(&view_src); |
| 637 | return -1; |
| 638 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 639 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 640 | if ((PyBuffer_IsContiguous(&view_dest, 'C') && |
| 641 | PyBuffer_IsContiguous(&view_src, 'C')) || |
| 642 | (PyBuffer_IsContiguous(&view_dest, 'F') && |
| 643 | PyBuffer_IsContiguous(&view_src, 'F'))) { |
| 644 | /* simplest copy is all that is needed */ |
| 645 | memcpy(view_dest.buf, view_src.buf, view_src.len); |
| 646 | PyBuffer_Release(&view_dest); |
| 647 | PyBuffer_Release(&view_src); |
| 648 | return 0; |
| 649 | } |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 650 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 651 | /* Otherwise a more elaborate copy scheme is needed */ |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 652 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 653 | /* XXX(nnorwitz): need to check for overflow! */ |
| 654 | indices = (Py_ssize_t *)PyMem_Malloc(sizeof(Py_ssize_t)*view_src.ndim); |
| 655 | if (indices == NULL) { |
| 656 | PyErr_NoMemory(); |
| 657 | PyBuffer_Release(&view_dest); |
| 658 | PyBuffer_Release(&view_src); |
| 659 | return -1; |
| 660 | } |
| 661 | for (k=0; k<view_src.ndim;k++) { |
| 662 | indices[k] = 0; |
| 663 | } |
| 664 | elements = 1; |
| 665 | for (k=0; k<view_src.ndim; k++) { |
| 666 | /* XXX(nnorwitz): can this overflow? */ |
| 667 | elements *= view_src.shape[k]; |
| 668 | } |
| 669 | while (elements--) { |
Antoine Pitrou | f68c2a7 | 2010-09-01 12:58:21 +0000 | [diff] [blame] | 670 | _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] | 671 | dptr = PyBuffer_GetPointer(&view_dest, indices); |
| 672 | sptr = PyBuffer_GetPointer(&view_src, indices); |
| 673 | memcpy(dptr, sptr, view_src.itemsize); |
| 674 | } |
| 675 | PyMem_Free(indices); |
| 676 | PyBuffer_Release(&view_dest); |
| 677 | PyBuffer_Release(&view_src); |
| 678 | return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | void |
| 682 | PyBuffer_FillContiguousStrides(int nd, Py_ssize_t *shape, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 683 | Py_ssize_t *strides, int itemsize, |
| 684 | char fort) |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 685 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 686 | int k; |
| 687 | Py_ssize_t sd; |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 688 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 689 | sd = itemsize; |
| 690 | if (fort == 'F') { |
| 691 | for (k=0; k<nd; k++) { |
| 692 | strides[k] = sd; |
| 693 | sd *= shape[k]; |
| 694 | } |
| 695 | } |
| 696 | else { |
| 697 | for (k=nd-1; k>=0; k--) { |
| 698 | strides[k] = sd; |
| 699 | sd *= shape[k]; |
| 700 | } |
| 701 | } |
| 702 | return; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 703 | } |
| 704 | |
| 705 | int |
Martin v. Löwis | 423be95 | 2008-08-13 15:53:07 +0000 | [diff] [blame] | 706 | 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] | 707 | int readonly, int flags) |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 708 | { |
Stefan Krah | 5178d91 | 2015-02-03 16:57:21 +0100 | [diff] [blame] | 709 | if (view == NULL) { |
| 710 | PyErr_SetString(PyExc_BufferError, |
| 711 | "PyBuffer_FillInfo: view==NULL argument is obsolete"); |
| 712 | return -1; |
| 713 | } |
| 714 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 715 | if (((flags & PyBUF_WRITABLE) == PyBUF_WRITABLE) && |
| 716 | (readonly == 1)) { |
| 717 | PyErr_SetString(PyExc_BufferError, |
| 718 | "Object is not writable."); |
| 719 | return -1; |
| 720 | } |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 721 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 722 | view->obj = obj; |
| 723 | if (obj) |
| 724 | Py_INCREF(obj); |
| 725 | view->buf = buf; |
| 726 | view->len = len; |
| 727 | view->readonly = readonly; |
| 728 | view->itemsize = 1; |
| 729 | view->format = NULL; |
| 730 | if ((flags & PyBUF_FORMAT) == PyBUF_FORMAT) |
| 731 | view->format = "B"; |
| 732 | view->ndim = 1; |
| 733 | view->shape = NULL; |
| 734 | if ((flags & PyBUF_ND) == PyBUF_ND) |
| 735 | view->shape = &(view->len); |
| 736 | view->strides = NULL; |
| 737 | if ((flags & PyBUF_STRIDES) == PyBUF_STRIDES) |
| 738 | view->strides = &(view->itemsize); |
| 739 | view->suboffsets = NULL; |
| 740 | view->internal = NULL; |
| 741 | return 0; |
Travis E. Oliphant | b99f762 | 2007-08-18 11:21:56 +0000 | [diff] [blame] | 742 | } |
| 743 | |
Martin v. Löwis | 423be95 | 2008-08-13 15:53:07 +0000 | [diff] [blame] | 744 | void |
| 745 | PyBuffer_Release(Py_buffer *view) |
| 746 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 747 | PyObject *obj = view->obj; |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 748 | PyBufferProcs *pb; |
| 749 | if (obj == NULL) |
| 750 | return; |
| 751 | pb = Py_TYPE(obj)->tp_as_buffer; |
| 752 | if (pb && pb->bf_releasebuffer) |
| 753 | pb->bf_releasebuffer(obj, view); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 754 | view->obj = NULL; |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 755 | Py_DECREF(obj); |
Martin v. Löwis | 423be95 | 2008-08-13 15:53:07 +0000 | [diff] [blame] | 756 | } |
| 757 | |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 758 | PyObject * |
| 759 | PyObject_Format(PyObject *obj, PyObject *format_spec) |
| 760 | { |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 761 | PyObject *meth; |
| 762 | PyObject *empty = NULL; |
| 763 | PyObject *result = NULL; |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 764 | _Py_IDENTIFIER(__format__); |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 765 | |
Serhiy Storchaka | ea525a2 | 2016-09-06 22:07:53 +0300 | [diff] [blame] | 766 | if (format_spec != NULL && !PyUnicode_Check(format_spec)) { |
| 767 | PyErr_Format(PyExc_SystemError, |
| 768 | "Format specifier must be a string, not %.200s", |
| 769 | Py_TYPE(format_spec)->tp_name); |
| 770 | return NULL; |
| 771 | } |
| 772 | |
| 773 | /* Fast path for common types. */ |
| 774 | if (format_spec == NULL || PyUnicode_GET_LENGTH(format_spec) == 0) { |
| 775 | if (PyUnicode_CheckExact(obj)) { |
| 776 | Py_INCREF(obj); |
| 777 | return obj; |
| 778 | } |
| 779 | if (PyLong_CheckExact(obj)) { |
| 780 | return PyObject_Str(obj); |
| 781 | } |
| 782 | } |
| 783 | |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 784 | /* If no format_spec is provided, use an empty string */ |
| 785 | if (format_spec == NULL) { |
Victor Stinner | 9d3b93b | 2011-11-22 02:27:30 +0100 | [diff] [blame] | 786 | empty = PyUnicode_New(0, 0); |
Benjamin Peterson | da2cf04 | 2010-06-05 00:45:37 +0000 | [diff] [blame] | 787 | format_spec = empty; |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 788 | } |
| 789 | |
Serhiy Storchaka | ea525a2 | 2016-09-06 22:07:53 +0300 | [diff] [blame] | 790 | /* Find the (unbound!) __format__ method */ |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 791 | meth = _PyObject_LookupSpecial(obj, &PyId___format__); |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 792 | if (meth == NULL) { |
Benjamin Peterson | da2cf04 | 2010-06-05 00:45:37 +0000 | [diff] [blame] | 793 | if (!PyErr_Occurred()) |
| 794 | PyErr_Format(PyExc_TypeError, |
| 795 | "Type %.100s doesn't define __format__", |
| 796 | Py_TYPE(obj)->tp_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 797 | goto done; |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 798 | } |
| 799 | |
Benjamin Peterson | da2cf04 | 2010-06-05 00:45:37 +0000 | [diff] [blame] | 800 | /* And call it. */ |
Petr Viktorin | ffd9753 | 2020-02-11 17:46:57 +0100 | [diff] [blame] | 801 | result = PyObject_CallOneArg(meth, format_spec); |
Benjamin Peterson | 6f889ad3 | 2010-06-05 02:11:45 +0000 | [diff] [blame] | 802 | Py_DECREF(meth); |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 803 | |
| 804 | if (result && !PyUnicode_Check(result)) { |
Ethan Furman | b95b561 | 2015-01-23 20:05:18 -0800 | [diff] [blame] | 805 | PyErr_Format(PyExc_TypeError, |
| 806 | "__format__ must return a str, not %.200s", |
| 807 | Py_TYPE(result)->tp_name); |
Benjamin Peterson | da2cf04 | 2010-06-05 00:45:37 +0000 | [diff] [blame] | 808 | Py_DECREF(result); |
| 809 | result = NULL; |
| 810 | goto done; |
Eric Smith | 8fd3eba | 2008-02-17 19:48:00 +0000 | [diff] [blame] | 811 | } |
| 812 | |
| 813 | done: |
| 814 | Py_XDECREF(empty); |
| 815 | return result; |
| 816 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 817 | /* Operations on numbers */ |
| 818 | |
| 819 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 820 | PyNumber_Check(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 821 | { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 822 | return o && Py_TYPE(o)->tp_as_number && |
| 823 | (Py_TYPE(o)->tp_as_number->nb_index || |
| 824 | Py_TYPE(o)->tp_as_number->nb_int || |
| 825 | Py_TYPE(o)->tp_as_number->nb_float); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 826 | } |
| 827 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 828 | /* Binary operators */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 829 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 830 | #define NB_SLOT(x) offsetof(PyNumberMethods, x) |
| 831 | #define NB_BINOP(nb_methods, slot) \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 832 | (*(binaryfunc*)(& ((char*)nb_methods)[slot])) |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 833 | #define NB_TERNOP(nb_methods, slot) \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 834 | (*(ternaryfunc*)(& ((char*)nb_methods)[slot])) |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 835 | |
| 836 | /* |
| 837 | Calling scheme used for binary operations: |
| 838 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 839 | Order operations are tried until either a valid result or error: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 840 | w.op(v,w)[*], v.op(v,w), w.op(v,w) |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 841 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 842 | [*] only when Py_TYPE(v) != Py_TYPE(w) && Py_TYPE(w) is a subclass of |
| 843 | Py_TYPE(v) |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 844 | */ |
| 845 | |
| 846 | static PyObject * |
| 847 | binary_op1(PyObject *v, PyObject *w, const int op_slot) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 848 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 849 | PyObject *x; |
| 850 | binaryfunc slotv = NULL; |
| 851 | binaryfunc slotw = NULL; |
Guido van Rossum | 4bb1e36 | 2001-09-28 23:49:48 +0000 | [diff] [blame] | 852 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 853 | if (Py_TYPE(v)->tp_as_number != NULL) |
| 854 | slotv = NB_BINOP(Py_TYPE(v)->tp_as_number, op_slot); |
Andy Lester | 5572870 | 2020-03-06 16:53:17 -0600 | [diff] [blame] | 855 | if (!Py_IS_TYPE(w, Py_TYPE(v)) && |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 856 | Py_TYPE(w)->tp_as_number != NULL) { |
| 857 | slotw = NB_BINOP(Py_TYPE(w)->tp_as_number, op_slot); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 858 | if (slotw == slotv) |
| 859 | slotw = NULL; |
| 860 | } |
| 861 | if (slotv) { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 862 | if (slotw && PyType_IsSubtype(Py_TYPE(w), Py_TYPE(v))) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 863 | x = slotw(v, w); |
| 864 | if (x != Py_NotImplemented) |
| 865 | return x; |
| 866 | Py_DECREF(x); /* can't do it */ |
| 867 | slotw = NULL; |
| 868 | } |
| 869 | x = slotv(v, w); |
| 870 | if (x != Py_NotImplemented) |
| 871 | return x; |
| 872 | Py_DECREF(x); /* can't do it */ |
| 873 | } |
| 874 | if (slotw) { |
| 875 | x = slotw(v, w); |
| 876 | if (x != Py_NotImplemented) |
| 877 | return x; |
| 878 | Py_DECREF(x); /* can't do it */ |
| 879 | } |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 880 | Py_RETURN_NOTIMPLEMENTED; |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 881 | } |
Guido van Rossum | 7766091 | 2002-04-16 16:32:50 +0000 | [diff] [blame] | 882 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 883 | static PyObject * |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 884 | binop_type_error(PyObject *v, PyObject *w, const char *op_name) |
| 885 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 886 | PyErr_Format(PyExc_TypeError, |
| 887 | "unsupported operand type(s) for %.100s: " |
| 888 | "'%.100s' and '%.100s'", |
| 889 | op_name, |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 890 | Py_TYPE(v)->tp_name, |
| 891 | Py_TYPE(w)->tp_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 892 | return NULL; |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 893 | } |
| 894 | |
| 895 | static PyObject * |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 896 | binary_op(PyObject *v, PyObject *w, const int op_slot, const char *op_name) |
| 897 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 898 | PyObject *result = binary_op1(v, w, op_slot); |
| 899 | if (result == Py_NotImplemented) { |
| 900 | Py_DECREF(result); |
Sanyam Khurana | 5e2eb35 | 2017-08-18 16:07:36 +0530 | [diff] [blame] | 901 | |
| 902 | if (op_slot == NB_SLOT(nb_rshift) && |
| 903 | PyCFunction_Check(v) && |
| 904 | strcmp(((PyCFunctionObject *)v)->m_ml->ml_name, "print") == 0) |
| 905 | { |
| 906 | PyErr_Format(PyExc_TypeError, |
| 907 | "unsupported operand type(s) for %.100s: " |
| 908 | "'%.100s' and '%.100s'. Did you mean \"print(<message>, " |
Sanyam Khurana | a7c449b | 2017-08-18 17:48:14 +0530 | [diff] [blame] | 909 | "file=<output_stream>)\"?", |
Sanyam Khurana | 5e2eb35 | 2017-08-18 16:07:36 +0530 | [diff] [blame] | 910 | op_name, |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 911 | Py_TYPE(v)->tp_name, |
| 912 | Py_TYPE(w)->tp_name); |
Sanyam Khurana | 5e2eb35 | 2017-08-18 16:07:36 +0530 | [diff] [blame] | 913 | return NULL; |
| 914 | } |
| 915 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 916 | return binop_type_error(v, w, op_name); |
| 917 | } |
| 918 | return result; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 919 | } |
| 920 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 921 | |
| 922 | /* |
| 923 | Calling scheme used for ternary operations: |
| 924 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 925 | Order operations are tried until either a valid result or error: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 926 | 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] | 927 | */ |
| 928 | |
| 929 | static PyObject * |
| 930 | ternary_op(PyObject *v, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 931 | PyObject *w, |
| 932 | PyObject *z, |
| 933 | const int op_slot, |
| 934 | const char *op_name) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 935 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 936 | PyNumberMethods *mv, *mw, *mz; |
| 937 | PyObject *x = NULL; |
| 938 | ternaryfunc slotv = NULL; |
| 939 | ternaryfunc slotw = NULL; |
| 940 | ternaryfunc slotz = NULL; |
Guido van Rossum | 7766091 | 2002-04-16 16:32:50 +0000 | [diff] [blame] | 941 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 942 | mv = Py_TYPE(v)->tp_as_number; |
| 943 | mw = Py_TYPE(w)->tp_as_number; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 944 | if (mv != NULL) |
| 945 | slotv = NB_TERNOP(mv, op_slot); |
Andy Lester | 5572870 | 2020-03-06 16:53:17 -0600 | [diff] [blame] | 946 | if (!Py_IS_TYPE(w, Py_TYPE(v)) && mw != NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 947 | slotw = NB_TERNOP(mw, op_slot); |
| 948 | if (slotw == slotv) |
| 949 | slotw = NULL; |
| 950 | } |
| 951 | if (slotv) { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 952 | if (slotw && PyType_IsSubtype(Py_TYPE(w), Py_TYPE(v))) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 953 | x = slotw(v, w, z); |
| 954 | if (x != Py_NotImplemented) |
| 955 | return x; |
| 956 | Py_DECREF(x); /* can't do it */ |
| 957 | slotw = NULL; |
| 958 | } |
| 959 | x = slotv(v, w, z); |
| 960 | if (x != Py_NotImplemented) |
| 961 | return x; |
| 962 | Py_DECREF(x); /* can't do it */ |
| 963 | } |
| 964 | if (slotw) { |
| 965 | x = slotw(v, w, z); |
| 966 | if (x != Py_NotImplemented) |
| 967 | return x; |
| 968 | Py_DECREF(x); /* can't do it */ |
| 969 | } |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 970 | mz = Py_TYPE(z)->tp_as_number; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 971 | if (mz != NULL) { |
| 972 | slotz = NB_TERNOP(mz, op_slot); |
| 973 | if (slotz == slotv || slotz == slotw) |
| 974 | slotz = NULL; |
| 975 | if (slotz) { |
| 976 | x = slotz(v, w, z); |
| 977 | if (x != Py_NotImplemented) |
| 978 | return x; |
| 979 | Py_DECREF(x); /* can't do it */ |
| 980 | } |
| 981 | } |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 982 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 983 | if (z == Py_None) |
| 984 | PyErr_Format( |
| 985 | PyExc_TypeError, |
| 986 | "unsupported operand type(s) for ** or pow(): " |
| 987 | "'%.100s' and '%.100s'", |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 988 | Py_TYPE(v)->tp_name, |
| 989 | Py_TYPE(w)->tp_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 990 | else |
| 991 | PyErr_Format( |
| 992 | PyExc_TypeError, |
| 993 | "unsupported operand type(s) for pow(): " |
| 994 | "'%.100s', '%.100s', '%.100s'", |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 995 | Py_TYPE(v)->tp_name, |
| 996 | Py_TYPE(w)->tp_name, |
| 997 | Py_TYPE(z)->tp_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 998 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 999 | } |
| 1000 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1001 | #define BINARY_FUNC(func, op, op_name) \ |
| 1002 | PyObject * \ |
| 1003 | func(PyObject *v, PyObject *w) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1004 | return binary_op(v, w, NB_SLOT(op), op_name); \ |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1005 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1006 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1007 | BINARY_FUNC(PyNumber_Or, nb_or, "|") |
| 1008 | BINARY_FUNC(PyNumber_Xor, nb_xor, "^") |
| 1009 | BINARY_FUNC(PyNumber_And, nb_and, "&") |
| 1010 | BINARY_FUNC(PyNumber_Lshift, nb_lshift, "<<") |
| 1011 | BINARY_FUNC(PyNumber_Rshift, nb_rshift, ">>") |
| 1012 | BINARY_FUNC(PyNumber_Subtract, nb_subtract, "-") |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1013 | BINARY_FUNC(PyNumber_Divmod, nb_divmod, "divmod()") |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1014 | |
| 1015 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1016 | PyNumber_Add(PyObject *v, PyObject *w) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1017 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1018 | PyObject *result = binary_op1(v, w, NB_SLOT(nb_add)); |
| 1019 | if (result == Py_NotImplemented) { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1020 | PySequenceMethods *m = Py_TYPE(v)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1021 | Py_DECREF(result); |
| 1022 | if (m && m->sq_concat) { |
| 1023 | return (*m->sq_concat)(v, w); |
| 1024 | } |
| 1025 | result = binop_type_error(v, w, "+"); |
| 1026 | } |
| 1027 | return result; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1028 | } |
| 1029 | |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 1030 | static PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1031 | sequence_repeat(ssizeargfunc repeatfunc, PyObject *seq, PyObject *n) |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 1032 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1033 | Py_ssize_t count; |
Victor Stinner | a15e260 | 2020-04-08 02:01:56 +0200 | [diff] [blame] | 1034 | if (_PyIndex_Check(n)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1035 | count = PyNumber_AsSsize_t(n, PyExc_OverflowError); |
| 1036 | if (count == -1 && PyErr_Occurred()) |
| 1037 | return NULL; |
| 1038 | } |
| 1039 | else { |
| 1040 | return type_error("can't multiply sequence by " |
| 1041 | "non-int of type '%.200s'", n); |
| 1042 | } |
| 1043 | return (*repeatfunc)(seq, count); |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 1044 | } |
| 1045 | |
| 1046 | PyObject * |
| 1047 | PyNumber_Multiply(PyObject *v, PyObject *w) |
| 1048 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1049 | PyObject *result = binary_op1(v, w, NB_SLOT(nb_multiply)); |
| 1050 | if (result == Py_NotImplemented) { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1051 | PySequenceMethods *mv = Py_TYPE(v)->tp_as_sequence; |
| 1052 | PySequenceMethods *mw = Py_TYPE(w)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1053 | Py_DECREF(result); |
| 1054 | if (mv && mv->sq_repeat) { |
| 1055 | return sequence_repeat(mv->sq_repeat, v, w); |
| 1056 | } |
| 1057 | else if (mw && mw->sq_repeat) { |
| 1058 | return sequence_repeat(mw->sq_repeat, w, v); |
| 1059 | } |
| 1060 | result = binop_type_error(v, w, "*"); |
| 1061 | } |
| 1062 | return result; |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 1063 | } |
| 1064 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1065 | PyObject * |
Benjamin Peterson | d51374e | 2014-04-09 23:55:56 -0400 | [diff] [blame] | 1066 | PyNumber_MatrixMultiply(PyObject *v, PyObject *w) |
| 1067 | { |
| 1068 | return binary_op(v, w, NB_SLOT(nb_matrix_multiply), "@"); |
| 1069 | } |
| 1070 | |
| 1071 | PyObject * |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 1072 | PyNumber_FloorDivide(PyObject *v, PyObject *w) |
| 1073 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1074 | return binary_op(v, w, NB_SLOT(nb_floor_divide), "//"); |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 1075 | } |
| 1076 | |
| 1077 | PyObject * |
| 1078 | PyNumber_TrueDivide(PyObject *v, PyObject *w) |
| 1079 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1080 | return binary_op(v, w, NB_SLOT(nb_true_divide), "/"); |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 1081 | } |
| 1082 | |
| 1083 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1084 | PyNumber_Remainder(PyObject *v, PyObject *w) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1085 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1086 | return binary_op(v, w, NB_SLOT(nb_remainder), "%"); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1087 | } |
| 1088 | |
| 1089 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1090 | PyNumber_Power(PyObject *v, PyObject *w, PyObject *z) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1091 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1092 | 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] | 1093 | } |
| 1094 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1095 | /* Binary in-place operators */ |
| 1096 | |
| 1097 | /* The in-place operators are defined to fall back to the 'normal', |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1098 | 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] | 1099 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1100 | - If the left hand object has the appropriate struct members, and |
| 1101 | they are filled, call the appropriate function and return the |
| 1102 | result. No coercion is done on the arguments; the left-hand object |
| 1103 | is the one the operation is performed on, and it's up to the |
| 1104 | function to deal with the right-hand object. |
Guido van Rossum | 7766091 | 2002-04-16 16:32:50 +0000 | [diff] [blame] | 1105 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1106 | - Otherwise, in-place modification is not supported. Handle it exactly as |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1107 | a non in-place operation of the same kind. |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1108 | |
| 1109 | */ |
| 1110 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1111 | static PyObject * |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 1112 | 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] | 1113 | { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1114 | PyNumberMethods *mv = Py_TYPE(v)->tp_as_number; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1115 | if (mv != NULL) { |
| 1116 | binaryfunc slot = NB_BINOP(mv, iop_slot); |
| 1117 | if (slot) { |
| 1118 | PyObject *x = (slot)(v, w); |
| 1119 | if (x != Py_NotImplemented) { |
| 1120 | return x; |
| 1121 | } |
| 1122 | Py_DECREF(x); |
| 1123 | } |
| 1124 | } |
| 1125 | return binary_op1(v, w, op_slot); |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 1126 | } |
| 1127 | |
| 1128 | static PyObject * |
| 1129 | 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] | 1130 | const char *op_name) |
Neil Schemenauer | d4b0fea | 2002-12-30 20:18:15 +0000 | [diff] [blame] | 1131 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1132 | PyObject *result = binary_iop1(v, w, iop_slot, op_slot); |
| 1133 | if (result == Py_NotImplemented) { |
| 1134 | Py_DECREF(result); |
| 1135 | return binop_type_error(v, w, op_name); |
| 1136 | } |
| 1137 | return result; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1138 | } |
| 1139 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1140 | #define INPLACE_BINOP(func, iop, op, op_name) \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1141 | PyObject * \ |
| 1142 | func(PyObject *v, PyObject *w) { \ |
| 1143 | return binary_iop(v, w, NB_SLOT(iop), NB_SLOT(op), op_name); \ |
| 1144 | } |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1145 | |
Neil Schemenauer | 5a1f015 | 2001-01-04 01:39:06 +0000 | [diff] [blame] | 1146 | INPLACE_BINOP(PyNumber_InPlaceOr, nb_inplace_or, nb_or, "|=") |
| 1147 | INPLACE_BINOP(PyNumber_InPlaceXor, nb_inplace_xor, nb_xor, "^=") |
| 1148 | INPLACE_BINOP(PyNumber_InPlaceAnd, nb_inplace_and, nb_and, "&=") |
| 1149 | INPLACE_BINOP(PyNumber_InPlaceLshift, nb_inplace_lshift, nb_lshift, "<<=") |
| 1150 | INPLACE_BINOP(PyNumber_InPlaceRshift, nb_inplace_rshift, nb_rshift, ">>=") |
| 1151 | INPLACE_BINOP(PyNumber_InPlaceSubtract, nb_inplace_subtract, nb_subtract, "-=") |
Benjamin Peterson | d51374e | 2014-04-09 23:55:56 -0400 | [diff] [blame] | 1152 | INPLACE_BINOP(PyNumber_InMatrixMultiply, nb_inplace_matrix_multiply, nb_matrix_multiply, "@=") |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1153 | |
| 1154 | PyObject * |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 1155 | PyNumber_InPlaceFloorDivide(PyObject *v, PyObject *w) |
| 1156 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1157 | return binary_iop(v, w, NB_SLOT(nb_inplace_floor_divide), |
| 1158 | NB_SLOT(nb_floor_divide), "//="); |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 1159 | } |
| 1160 | |
| 1161 | PyObject * |
| 1162 | PyNumber_InPlaceTrueDivide(PyObject *v, PyObject *w) |
| 1163 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1164 | return binary_iop(v, w, NB_SLOT(nb_inplace_true_divide), |
| 1165 | NB_SLOT(nb_true_divide), "/="); |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 1166 | } |
| 1167 | |
| 1168 | PyObject * |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1169 | PyNumber_InPlaceAdd(PyObject *v, PyObject *w) |
| 1170 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1171 | PyObject *result = binary_iop1(v, w, NB_SLOT(nb_inplace_add), |
| 1172 | NB_SLOT(nb_add)); |
| 1173 | if (result == Py_NotImplemented) { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1174 | PySequenceMethods *m = Py_TYPE(v)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1175 | Py_DECREF(result); |
| 1176 | if (m != NULL) { |
| 1177 | binaryfunc f = NULL; |
| 1178 | f = m->sq_inplace_concat; |
| 1179 | if (f == NULL) |
| 1180 | f = m->sq_concat; |
| 1181 | if (f != NULL) |
| 1182 | return (*f)(v, w); |
| 1183 | } |
| 1184 | result = binop_type_error(v, w, "+="); |
| 1185 | } |
| 1186 | return result; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1187 | } |
| 1188 | |
| 1189 | PyObject * |
| 1190 | PyNumber_InPlaceMultiply(PyObject *v, PyObject *w) |
| 1191 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1192 | PyObject *result = binary_iop1(v, w, NB_SLOT(nb_inplace_multiply), |
| 1193 | NB_SLOT(nb_multiply)); |
| 1194 | if (result == Py_NotImplemented) { |
| 1195 | ssizeargfunc f = NULL; |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1196 | PySequenceMethods *mv = Py_TYPE(v)->tp_as_sequence; |
| 1197 | PySequenceMethods *mw = Py_TYPE(w)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1198 | Py_DECREF(result); |
| 1199 | if (mv != NULL) { |
| 1200 | f = mv->sq_inplace_repeat; |
| 1201 | if (f == NULL) |
| 1202 | f = mv->sq_repeat; |
| 1203 | if (f != NULL) |
| 1204 | return sequence_repeat(f, v, w); |
| 1205 | } |
| 1206 | else if (mw != NULL) { |
| 1207 | /* Note that the right hand operand should not be |
| 1208 | * mutated in this case so sq_inplace_repeat is not |
| 1209 | * used. */ |
| 1210 | if (mw->sq_repeat) |
| 1211 | return sequence_repeat(mw->sq_repeat, w, v); |
| 1212 | } |
| 1213 | result = binop_type_error(v, w, "*="); |
| 1214 | } |
| 1215 | return result; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1216 | } |
| 1217 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1218 | PyObject * |
Benjamin Peterson | d51374e | 2014-04-09 23:55:56 -0400 | [diff] [blame] | 1219 | PyNumber_InPlaceMatrixMultiply(PyObject *v, PyObject *w) |
| 1220 | { |
| 1221 | return binary_iop(v, w, NB_SLOT(nb_inplace_matrix_multiply), |
| 1222 | NB_SLOT(nb_matrix_multiply), "@="); |
| 1223 | } |
| 1224 | |
| 1225 | PyObject * |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1226 | PyNumber_InPlaceRemainder(PyObject *v, PyObject *w) |
| 1227 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1228 | return binary_iop(v, w, NB_SLOT(nb_inplace_remainder), |
| 1229 | NB_SLOT(nb_remainder), "%="); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1230 | } |
| 1231 | |
| 1232 | PyObject * |
| 1233 | PyNumber_InPlacePower(PyObject *v, PyObject *w, PyObject *z) |
| 1234 | { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1235 | if (Py_TYPE(v)->tp_as_number && |
| 1236 | Py_TYPE(v)->tp_as_number->nb_inplace_power != NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1237 | return ternary_op(v, w, z, NB_SLOT(nb_inplace_power), "**="); |
| 1238 | } |
| 1239 | else { |
| 1240 | return ternary_op(v, w, z, NB_SLOT(nb_power), "**="); |
| 1241 | } |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1242 | } |
| 1243 | |
| 1244 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1245 | /* Unary operators and functions */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1246 | |
| 1247 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1248 | PyNumber_Negative(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1249 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1250 | PyNumberMethods *m; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1251 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1252 | if (o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1253 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1254 | } |
| 1255 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1256 | m = Py_TYPE(o)->tp_as_number; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1257 | if (m && m->nb_negative) |
| 1258 | return (*m->nb_negative)(o); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1259 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1260 | return type_error("bad operand type for unary -: '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1261 | } |
| 1262 | |
| 1263 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1264 | PyNumber_Positive(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1265 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1266 | PyNumberMethods *m; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1267 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1268 | if (o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1269 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1270 | } |
| 1271 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1272 | m = Py_TYPE(o)->tp_as_number; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1273 | if (m && m->nb_positive) |
| 1274 | return (*m->nb_positive)(o); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1275 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1276 | return type_error("bad operand type for unary +: '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1277 | } |
| 1278 | |
| 1279 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1280 | PyNumber_Invert(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1281 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1282 | PyNumberMethods *m; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1283 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1284 | if (o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1285 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1286 | } |
| 1287 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1288 | m = Py_TYPE(o)->tp_as_number; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1289 | if (m && m->nb_invert) |
| 1290 | return (*m->nb_invert)(o); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1291 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1292 | return type_error("bad operand type for unary ~: '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1293 | } |
| 1294 | |
| 1295 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1296 | PyNumber_Absolute(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1297 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1298 | PyNumberMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1299 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1300 | if (o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1301 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1302 | } |
| 1303 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1304 | m = Py_TYPE(o)->tp_as_number; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1305 | if (m && m->nb_absolute) |
| 1306 | return m->nb_absolute(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1307 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1308 | return type_error("bad operand type for abs(): '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1309 | } |
| 1310 | |
Victor Stinner | a15e260 | 2020-04-08 02:01:56 +0200 | [diff] [blame] | 1311 | |
Christian Tismer | ea62ce7 | 2018-06-09 20:32:25 +0200 | [diff] [blame] | 1312 | int |
| 1313 | PyIndex_Check(PyObject *obj) |
| 1314 | { |
Victor Stinner | a15e260 | 2020-04-08 02:01:56 +0200 | [diff] [blame] | 1315 | return _PyIndex_Check(obj); |
Christian Tismer | ea62ce7 | 2018-06-09 20:32:25 +0200 | [diff] [blame] | 1316 | } |
| 1317 | |
Victor Stinner | a15e260 | 2020-04-08 02:01:56 +0200 | [diff] [blame] | 1318 | |
Serhiy Storchaka | 31a6554 | 2013-12-11 21:07:54 +0200 | [diff] [blame] | 1319 | /* Return a Python int from the object item. |
Serhiy Storchaka | 9594942 | 2013-08-27 19:40:23 +0300 | [diff] [blame] | 1320 | Raise TypeError if the result is not an int |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 1321 | or if the object cannot be interpreted as an index. |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1322 | */ |
| 1323 | PyObject * |
Guido van Rossum | 38fff8c | 2006-03-07 18:50:55 +0000 | [diff] [blame] | 1324 | PyNumber_Index(PyObject *item) |
| 1325 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1326 | PyObject *result = NULL; |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1327 | if (item == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1328 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1329 | } |
| 1330 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1331 | if (PyLong_Check(item)) { |
| 1332 | Py_INCREF(item); |
| 1333 | return item; |
| 1334 | } |
Victor Stinner | a15e260 | 2020-04-08 02:01:56 +0200 | [diff] [blame] | 1335 | if (!_PyIndex_Check(item)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1336 | PyErr_Format(PyExc_TypeError, |
| 1337 | "'%.200s' object cannot be interpreted " |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1338 | "as an integer", Py_TYPE(item)->tp_name); |
Serhiy Storchaka | 31a6554 | 2013-12-11 21:07:54 +0200 | [diff] [blame] | 1339 | return NULL; |
| 1340 | } |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1341 | result = Py_TYPE(item)->tp_as_number->nb_index(item); |
Serhiy Storchaka | 31a6554 | 2013-12-11 21:07:54 +0200 | [diff] [blame] | 1342 | if (!result || PyLong_CheckExact(result)) |
| 1343 | return result; |
| 1344 | if (!PyLong_Check(result)) { |
| 1345 | PyErr_Format(PyExc_TypeError, |
| 1346 | "__index__ returned non-int (type %.200s)", |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1347 | Py_TYPE(result)->tp_name); |
Serhiy Storchaka | 31a6554 | 2013-12-11 21:07:54 +0200 | [diff] [blame] | 1348 | Py_DECREF(result); |
| 1349 | return NULL; |
| 1350 | } |
| 1351 | /* Issue #17576: warn if 'result' not of exact type int. */ |
| 1352 | if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1, |
| 1353 | "__index__ returned non-int (type %.200s). " |
| 1354 | "The ability to return an instance of a strict subclass of int " |
| 1355 | "is deprecated, and may be removed in a future version of Python.", |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1356 | Py_TYPE(result)->tp_name)) { |
Serhiy Storchaka | 31a6554 | 2013-12-11 21:07:54 +0200 | [diff] [blame] | 1357 | Py_DECREF(result); |
| 1358 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1359 | } |
| 1360 | return result; |
Guido van Rossum | 38fff8c | 2006-03-07 18:50:55 +0000 | [diff] [blame] | 1361 | } |
| 1362 | |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1363 | /* Return an error on Overflow only if err is not NULL*/ |
| 1364 | |
| 1365 | Py_ssize_t |
| 1366 | PyNumber_AsSsize_t(PyObject *item, PyObject *err) |
| 1367 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1368 | Py_ssize_t result; |
| 1369 | PyObject *runerr; |
| 1370 | PyObject *value = PyNumber_Index(item); |
| 1371 | if (value == NULL) |
| 1372 | return -1; |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1373 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1374 | /* We're done if PyLong_AsSsize_t() returns without error. */ |
| 1375 | result = PyLong_AsSsize_t(value); |
| 1376 | if (result != -1 || !(runerr = PyErr_Occurred())) |
| 1377 | goto finish; |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1378 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1379 | /* Error handling code -- only manage OverflowError differently */ |
| 1380 | if (!PyErr_GivenExceptionMatches(runerr, PyExc_OverflowError)) |
| 1381 | goto finish; |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1382 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1383 | PyErr_Clear(); |
| 1384 | /* If no error-handling desired then the default clipping |
| 1385 | is sufficient. |
| 1386 | */ |
| 1387 | if (!err) { |
| 1388 | assert(PyLong_Check(value)); |
| 1389 | /* Whether or not it is less than or equal to |
| 1390 | zero is determined by the sign of ob_size |
| 1391 | */ |
| 1392 | if (_PyLong_Sign(value) < 0) |
| 1393 | result = PY_SSIZE_T_MIN; |
| 1394 | else |
| 1395 | result = PY_SSIZE_T_MAX; |
| 1396 | } |
| 1397 | else { |
| 1398 | /* Otherwise replace the error with caller's error object. */ |
| 1399 | PyErr_Format(err, |
| 1400 | "cannot fit '%.200s' into an index-sized integer", |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1401 | Py_TYPE(item)->tp_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1402 | } |
Guido van Rossum | 98297ee | 2007-11-06 21:34:58 +0000 | [diff] [blame] | 1403 | |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1404 | finish: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1405 | Py_DECREF(value); |
| 1406 | return result; |
Thomas Wouters | 00ee7ba | 2006-08-21 19:07:27 +0000 | [diff] [blame] | 1407 | } |
| 1408 | |
| 1409 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1410 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1411 | PyNumber_Long(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1412 | { |
Serhiy Storchaka | 54cd196 | 2016-08-21 20:03:08 +0300 | [diff] [blame] | 1413 | PyObject *result; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1414 | PyNumberMethods *m; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1415 | PyObject *trunc_func; |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 1416 | Py_buffer view; |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 1417 | _Py_IDENTIFIER(__trunc__); |
Christian Heimes | 15ebc88 | 2008-02-04 18:48:49 +0000 | [diff] [blame] | 1418 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1419 | if (o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1420 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1421 | } |
| 1422 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1423 | if (PyLong_CheckExact(o)) { |
| 1424 | Py_INCREF(o); |
| 1425 | return o; |
| 1426 | } |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1427 | m = Py_TYPE(o)->tp_as_number; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1428 | if (m && m->nb_int) { /* This should include subclasses of int */ |
Serhiy Storchaka | 6a44f6e | 2019-02-25 17:57:58 +0200 | [diff] [blame] | 1429 | result = _PyLong_FromNbInt(o); |
Serhiy Storchaka | 54cd196 | 2016-08-21 20:03:08 +0300 | [diff] [blame] | 1430 | if (result != NULL && !PyLong_CheckExact(result)) { |
| 1431 | Py_SETREF(result, _PyLong_Copy((PyLongObject *)result)); |
| 1432 | } |
| 1433 | return result; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1434 | } |
Serhiy Storchaka | bdbad71 | 2019-06-02 00:05:48 +0300 | [diff] [blame] | 1435 | if (m && m->nb_index) { |
| 1436 | result = _PyLong_FromNbIndexOrNbInt(o); |
| 1437 | if (result != NULL && !PyLong_CheckExact(result)) { |
| 1438 | Py_SETREF(result, _PyLong_Copy((PyLongObject *)result)); |
| 1439 | } |
| 1440 | return result; |
| 1441 | } |
Benjamin Peterson | 1b1a8e7 | 2012-03-20 23:48:11 -0400 | [diff] [blame] | 1442 | trunc_func = _PyObject_LookupSpecial(o, &PyId___trunc__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1443 | if (trunc_func) { |
INADA Naoki | 72dccde | 2017-02-16 09:26:01 +0900 | [diff] [blame] | 1444 | result = _PyObject_CallNoArg(trunc_func); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1445 | Py_DECREF(trunc_func); |
Serhiy Storchaka | 54cd196 | 2016-08-21 20:03:08 +0300 | [diff] [blame] | 1446 | if (result == NULL || PyLong_CheckExact(result)) { |
| 1447 | return result; |
| 1448 | } |
| 1449 | if (PyLong_Check(result)) { |
| 1450 | Py_SETREF(result, _PyLong_Copy((PyLongObject *)result)); |
| 1451 | return result; |
| 1452 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1453 | /* __trunc__ is specified to return an Integral type, |
Martin Panter | 7462b649 | 2015-11-02 03:37:02 +0000 | [diff] [blame] | 1454 | but int() needs to return an int. */ |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1455 | m = Py_TYPE(result)->tp_as_number; |
Serhiy Storchaka | 6a44f6e | 2019-02-25 17:57:58 +0200 | [diff] [blame] | 1456 | if (m == NULL || (m->nb_index == NULL && m->nb_int == NULL)) { |
Serhiy Storchaka | 31a6554 | 2013-12-11 21:07:54 +0200 | [diff] [blame] | 1457 | PyErr_Format( |
| 1458 | PyExc_TypeError, |
| 1459 | "__trunc__ returned non-Integral (type %.200s)", |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1460 | Py_TYPE(result)->tp_name); |
Serhiy Storchaka | 54cd196 | 2016-08-21 20:03:08 +0300 | [diff] [blame] | 1461 | Py_DECREF(result); |
Serhiy Storchaka | 31a6554 | 2013-12-11 21:07:54 +0200 | [diff] [blame] | 1462 | return NULL; |
| 1463 | } |
Serhiy Storchaka | 6a44f6e | 2019-02-25 17:57:58 +0200 | [diff] [blame] | 1464 | Py_SETREF(result, _PyLong_FromNbIndexOrNbInt(result)); |
Serhiy Storchaka | 54cd196 | 2016-08-21 20:03:08 +0300 | [diff] [blame] | 1465 | if (result != NULL && !PyLong_CheckExact(result)) { |
| 1466 | Py_SETREF(result, _PyLong_Copy((PyLongObject *)result)); |
| 1467 | } |
| 1468 | return result; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1469 | } |
Benjamin Peterson | 1b1a8e7 | 2012-03-20 23:48:11 -0400 | [diff] [blame] | 1470 | if (PyErr_Occurred()) |
| 1471 | return NULL; |
Christian Heimes | 15ebc88 | 2008-02-04 18:48:49 +0000 | [diff] [blame] | 1472 | |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 1473 | if (PyUnicode_Check(o)) |
| 1474 | /* The below check is done in PyLong_FromUnicode(). */ |
| 1475 | return PyLong_FromUnicodeObject(o, 10); |
| 1476 | |
Martin Panter | eeb896c | 2015-11-07 02:32:21 +0000 | [diff] [blame] | 1477 | if (PyBytes_Check(o)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1478 | /* need to do extra error checking that PyLong_FromString() |
Serhiy Storchaka | f6d0aee | 2013-08-03 20:55:06 +0300 | [diff] [blame] | 1479 | * doesn't do. In particular int('9\x005') must raise an |
| 1480 | * exception, not truncate at the null. |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1481 | */ |
Martin Panter | eeb896c | 2015-11-07 02:32:21 +0000 | [diff] [blame] | 1482 | return _PyLong_FromBytes(PyBytes_AS_STRING(o), |
| 1483 | PyBytes_GET_SIZE(o), 10); |
| 1484 | |
| 1485 | if (PyByteArray_Check(o)) |
| 1486 | return _PyLong_FromBytes(PyByteArray_AS_STRING(o), |
| 1487 | PyByteArray_GET_SIZE(o), 10); |
| 1488 | |
| 1489 | if (PyObject_GetBuffer(o, &view, PyBUF_SIMPLE) == 0) { |
Serhiy Storchaka | 54cd196 | 2016-08-21 20:03:08 +0300 | [diff] [blame] | 1490 | PyObject *bytes; |
Martin Panter | eeb896c | 2015-11-07 02:32:21 +0000 | [diff] [blame] | 1491 | |
| 1492 | /* Copy to NUL-terminated buffer. */ |
| 1493 | bytes = PyBytes_FromStringAndSize((const char *)view.buf, view.len); |
| 1494 | if (bytes == NULL) { |
| 1495 | PyBuffer_Release(&view); |
| 1496 | return NULL; |
| 1497 | } |
| 1498 | result = _PyLong_FromBytes(PyBytes_AS_STRING(bytes), |
| 1499 | PyBytes_GET_SIZE(bytes), 10); |
| 1500 | Py_DECREF(bytes); |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 1501 | PyBuffer_Release(&view); |
| 1502 | return result; |
| 1503 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1504 | |
Serhiy Storchaka | 4fdb684 | 2015-02-03 01:21:08 +0200 | [diff] [blame] | 1505 | return type_error("int() argument must be a string, a bytes-like object " |
| 1506 | "or a number, not '%.200s'", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1507 | } |
| 1508 | |
| 1509 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1510 | PyNumber_Float(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1511 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1512 | PyNumberMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1513 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1514 | if (o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1515 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1516 | } |
| 1517 | |
Serhiy Storchaka | 16931c3 | 2016-06-03 21:42:55 +0300 | [diff] [blame] | 1518 | if (PyFloat_CheckExact(o)) { |
| 1519 | Py_INCREF(o); |
| 1520 | return o; |
| 1521 | } |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1522 | m = Py_TYPE(o)->tp_as_number; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1523 | if (m && m->nb_float) { /* This should include subclasses of float */ |
| 1524 | PyObject *res = m->nb_float(o); |
Serhiy Storchaka | 16931c3 | 2016-06-03 21:42:55 +0300 | [diff] [blame] | 1525 | double val; |
| 1526 | if (!res || PyFloat_CheckExact(res)) { |
| 1527 | return res; |
| 1528 | } |
| 1529 | if (!PyFloat_Check(res)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1530 | PyErr_Format(PyExc_TypeError, |
Serhiy Storchaka | 16931c3 | 2016-06-03 21:42:55 +0300 | [diff] [blame] | 1531 | "%.50s.__float__ returned non-float (type %.50s)", |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1532 | Py_TYPE(o)->tp_name, Py_TYPE(res)->tp_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1533 | Py_DECREF(res); |
| 1534 | return NULL; |
| 1535 | } |
Serhiy Storchaka | 16931c3 | 2016-06-03 21:42:55 +0300 | [diff] [blame] | 1536 | /* Issue #26983: warn if 'res' not of exact type float. */ |
| 1537 | if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1, |
| 1538 | "%.50s.__float__ returned non-float (type %.50s). " |
| 1539 | "The ability to return an instance of a strict subclass of float " |
| 1540 | "is deprecated, and may be removed in a future version of Python.", |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1541 | Py_TYPE(o)->tp_name, Py_TYPE(res)->tp_name)) { |
Serhiy Storchaka | 16931c3 | 2016-06-03 21:42:55 +0300 | [diff] [blame] | 1542 | Py_DECREF(res); |
| 1543 | return NULL; |
| 1544 | } |
| 1545 | val = PyFloat_AS_DOUBLE(res); |
| 1546 | Py_DECREF(res); |
| 1547 | return PyFloat_FromDouble(val); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1548 | } |
Serhiy Storchaka | bdbad71 | 2019-06-02 00:05:48 +0300 | [diff] [blame] | 1549 | if (m && m->nb_index) { |
| 1550 | PyObject *res = PyNumber_Index(o); |
| 1551 | if (!res) { |
| 1552 | return NULL; |
| 1553 | } |
| 1554 | double val = PyLong_AsDouble(res); |
| 1555 | Py_DECREF(res); |
| 1556 | if (val == -1.0 && PyErr_Occurred()) { |
| 1557 | return NULL; |
| 1558 | } |
| 1559 | return PyFloat_FromDouble(val); |
| 1560 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1561 | if (PyFloat_Check(o)) { /* A float subclass with nb_float == NULL */ |
Serhiy Storchaka | 16931c3 | 2016-06-03 21:42:55 +0300 | [diff] [blame] | 1562 | return PyFloat_FromDouble(PyFloat_AS_DOUBLE(o)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1563 | } |
| 1564 | return PyFloat_FromString(o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1565 | } |
| 1566 | |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1567 | |
| 1568 | PyObject * |
| 1569 | PyNumber_ToBase(PyObject *n, int base) |
| 1570 | { |
Serhiy Storchaka | e5ccc94 | 2020-03-09 20:03:38 +0200 | [diff] [blame] | 1571 | if (!(base == 2 || base == 8 || base == 10 || base == 16)) { |
| 1572 | PyErr_SetString(PyExc_SystemError, |
| 1573 | "PyNumber_ToBase: base must be 2, 8, 10 or 16"); |
| 1574 | return NULL; |
| 1575 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1576 | PyObject *index = PyNumber_Index(n); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1577 | if (!index) |
| 1578 | return NULL; |
Serhiy Storchaka | e5ccc94 | 2020-03-09 20:03:38 +0200 | [diff] [blame] | 1579 | PyObject *res = _PyLong_Format(index, base); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1580 | Py_DECREF(index); |
| 1581 | return res; |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1582 | } |
| 1583 | |
| 1584 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1585 | /* Operations on sequences */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1586 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1587 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1588 | PySequence_Check(PyObject *s) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1589 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1590 | if (PyDict_Check(s)) |
| 1591 | return 0; |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1592 | return Py_TYPE(s)->tp_as_sequence && |
| 1593 | Py_TYPE(s)->tp_as_sequence->sq_item != NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1594 | } |
| 1595 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1596 | Py_ssize_t |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 1597 | PySequence_Size(PyObject *s) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1598 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1599 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1600 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1601 | if (s == NULL) { |
| 1602 | null_error(); |
| 1603 | return -1; |
| 1604 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1605 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1606 | m = Py_TYPE(s)->tp_as_sequence; |
Serhiy Storchaka | 813f943 | 2017-04-16 09:21:44 +0300 | [diff] [blame] | 1607 | if (m && m->sq_length) { |
| 1608 | Py_ssize_t len = m->sq_length(s); |
| 1609 | assert(len >= 0 || PyErr_Occurred()); |
| 1610 | return len; |
| 1611 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1612 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1613 | if (Py_TYPE(s)->tp_as_mapping && Py_TYPE(s)->tp_as_mapping->mp_length) { |
Serhiy Storchaka | a6fdddb | 2018-07-23 23:43:42 +0300 | [diff] [blame] | 1614 | type_error("%.200s is not a sequence", s); |
| 1615 | return -1; |
| 1616 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1617 | type_error("object of type '%.200s' has no len()", s); |
| 1618 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1619 | } |
| 1620 | |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1621 | #undef PySequence_Length |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1622 | Py_ssize_t |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1623 | PySequence_Length(PyObject *s) |
| 1624 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1625 | return PySequence_Size(s); |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 1626 | } |
| 1627 | #define PySequence_Length PySequence_Size |
| 1628 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1629 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1630 | PySequence_Concat(PyObject *s, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1631 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1632 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1633 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1634 | if (s == NULL || o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1635 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1636 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1637 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1638 | m = Py_TYPE(s)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1639 | if (m && m->sq_concat) |
| 1640 | return m->sq_concat(s, o); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1641 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1642 | /* Instances of user classes defining an __add__() method only |
| 1643 | have an nb_add slot, not an sq_concat slot. So we fall back |
| 1644 | to nb_add if both arguments appear to be sequences. */ |
| 1645 | if (PySequence_Check(s) && PySequence_Check(o)) { |
| 1646 | PyObject *result = binary_op1(s, o, NB_SLOT(nb_add)); |
| 1647 | if (result != Py_NotImplemented) |
| 1648 | return result; |
| 1649 | Py_DECREF(result); |
| 1650 | } |
| 1651 | return type_error("'%.200s' object can't be concatenated", s); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1652 | } |
| 1653 | |
| 1654 | PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1655 | PySequence_Repeat(PyObject *o, Py_ssize_t count) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1656 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1657 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1658 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1659 | if (o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1660 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1661 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1662 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1663 | m = Py_TYPE(o)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1664 | if (m && m->sq_repeat) |
| 1665 | return m->sq_repeat(o, count); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1666 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1667 | /* Instances of user classes defining a __mul__() method only |
| 1668 | have an nb_multiply slot, not an sq_repeat slot. so we fall back |
| 1669 | to nb_multiply if o appears to be a sequence. */ |
| 1670 | if (PySequence_Check(o)) { |
| 1671 | PyObject *n, *result; |
| 1672 | n = PyLong_FromSsize_t(count); |
| 1673 | if (n == NULL) |
| 1674 | return NULL; |
| 1675 | result = binary_op1(o, n, NB_SLOT(nb_multiply)); |
| 1676 | Py_DECREF(n); |
| 1677 | if (result != Py_NotImplemented) |
| 1678 | return result; |
| 1679 | Py_DECREF(result); |
| 1680 | } |
| 1681 | return type_error("'%.200s' object can't be repeated", o); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1682 | } |
| 1683 | |
| 1684 | PyObject * |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1685 | PySequence_InPlaceConcat(PyObject *s, PyObject *o) |
| 1686 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1687 | PySequenceMethods *m; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1688 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1689 | if (s == NULL || o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1690 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1691 | } |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1692 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1693 | m = Py_TYPE(s)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1694 | if (m && m->sq_inplace_concat) |
| 1695 | return m->sq_inplace_concat(s, o); |
| 1696 | if (m && m->sq_concat) |
| 1697 | return m->sq_concat(s, o); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1698 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1699 | if (PySequence_Check(s) && PySequence_Check(o)) { |
| 1700 | PyObject *result = binary_iop1(s, o, NB_SLOT(nb_inplace_add), |
| 1701 | NB_SLOT(nb_add)); |
| 1702 | if (result != Py_NotImplemented) |
| 1703 | return result; |
| 1704 | Py_DECREF(result); |
| 1705 | } |
| 1706 | return type_error("'%.200s' object can't be concatenated", s); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1707 | } |
| 1708 | |
| 1709 | PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1710 | PySequence_InPlaceRepeat(PyObject *o, Py_ssize_t count) |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1711 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1712 | PySequenceMethods *m; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1713 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1714 | if (o == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1715 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1716 | } |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1717 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1718 | m = Py_TYPE(o)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1719 | if (m && m->sq_inplace_repeat) |
| 1720 | return m->sq_inplace_repeat(o, count); |
| 1721 | if (m && m->sq_repeat) |
| 1722 | return m->sq_repeat(o, count); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1723 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1724 | if (PySequence_Check(o)) { |
| 1725 | PyObject *n, *result; |
| 1726 | n = PyLong_FromSsize_t(count); |
| 1727 | if (n == NULL) |
| 1728 | return NULL; |
| 1729 | result = binary_iop1(o, n, NB_SLOT(nb_inplace_multiply), |
| 1730 | NB_SLOT(nb_multiply)); |
| 1731 | Py_DECREF(n); |
| 1732 | if (result != Py_NotImplemented) |
| 1733 | return result; |
| 1734 | Py_DECREF(result); |
| 1735 | } |
| 1736 | return type_error("'%.200s' object can't be repeated", o); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1737 | } |
| 1738 | |
| 1739 | PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1740 | PySequence_GetItem(PyObject *s, Py_ssize_t i) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1741 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1742 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1743 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1744 | if (s == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1745 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1746 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1747 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1748 | m = Py_TYPE(s)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1749 | if (m && m->sq_item) { |
| 1750 | if (i < 0) { |
| 1751 | if (m->sq_length) { |
| 1752 | Py_ssize_t l = (*m->sq_length)(s); |
Victor Stinner | e20310f | 2015-11-05 13:56:58 +0100 | [diff] [blame] | 1753 | if (l < 0) { |
| 1754 | assert(PyErr_Occurred()); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1755 | return NULL; |
Victor Stinner | e20310f | 2015-11-05 13:56:58 +0100 | [diff] [blame] | 1756 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1757 | i += l; |
| 1758 | } |
| 1759 | } |
| 1760 | return m->sq_item(s, i); |
| 1761 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1762 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1763 | if (Py_TYPE(s)->tp_as_mapping && Py_TYPE(s)->tp_as_mapping->mp_subscript) { |
Serhiy Storchaka | a6fdddb | 2018-07-23 23:43:42 +0300 | [diff] [blame] | 1764 | return type_error("%.200s is not a sequence", s); |
| 1765 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1766 | return type_error("'%.200s' object does not support indexing", s); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1767 | } |
| 1768 | |
| 1769 | PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1770 | 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] | 1771 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1772 | PyMappingMethods *mp; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1773 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1774 | if (!s) { |
| 1775 | return null_error(); |
| 1776 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1777 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1778 | mp = Py_TYPE(s)->tp_as_mapping; |
Benjamin Peterson | 568867a | 2010-09-11 16:02:03 +0000 | [diff] [blame] | 1779 | if (mp && mp->mp_subscript) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1780 | PyObject *res; |
| 1781 | PyObject *slice = _PySlice_FromIndices(i1, i2); |
| 1782 | if (!slice) |
| 1783 | return NULL; |
| 1784 | res = mp->mp_subscript(s, slice); |
| 1785 | Py_DECREF(slice); |
| 1786 | return res; |
| 1787 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1788 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1789 | return type_error("'%.200s' object is unsliceable", s); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1790 | } |
| 1791 | |
| 1792 | int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1793 | PySequence_SetItem(PyObject *s, Py_ssize_t i, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1794 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1795 | PySequenceMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1796 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1797 | if (s == NULL) { |
| 1798 | null_error(); |
| 1799 | return -1; |
| 1800 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1801 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1802 | m = Py_TYPE(s)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1803 | if (m && m->sq_ass_item) { |
| 1804 | if (i < 0) { |
| 1805 | if (m->sq_length) { |
| 1806 | Py_ssize_t l = (*m->sq_length)(s); |
Serhiy Storchaka | 813f943 | 2017-04-16 09:21:44 +0300 | [diff] [blame] | 1807 | if (l < 0) { |
| 1808 | assert(PyErr_Occurred()); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1809 | return -1; |
Serhiy Storchaka | 813f943 | 2017-04-16 09:21:44 +0300 | [diff] [blame] | 1810 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1811 | i += l; |
| 1812 | } |
| 1813 | } |
| 1814 | return m->sq_ass_item(s, i, o); |
| 1815 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1816 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1817 | if (Py_TYPE(s)->tp_as_mapping && Py_TYPE(s)->tp_as_mapping->mp_ass_subscript) { |
Serhiy Storchaka | a6fdddb | 2018-07-23 23:43:42 +0300 | [diff] [blame] | 1818 | type_error("%.200s is not a sequence", s); |
| 1819 | return -1; |
| 1820 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1821 | type_error("'%.200s' object does not support item assignment", s); |
| 1822 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1823 | } |
| 1824 | |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1825 | int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1826 | PySequence_DelItem(PyObject *s, Py_ssize_t i) |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1827 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1828 | PySequenceMethods *m; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1829 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1830 | if (s == NULL) { |
| 1831 | null_error(); |
| 1832 | return -1; |
| 1833 | } |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1834 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1835 | m = Py_TYPE(s)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1836 | if (m && m->sq_ass_item) { |
| 1837 | if (i < 0) { |
| 1838 | if (m->sq_length) { |
| 1839 | Py_ssize_t l = (*m->sq_length)(s); |
Serhiy Storchaka | 813f943 | 2017-04-16 09:21:44 +0300 | [diff] [blame] | 1840 | if (l < 0) { |
| 1841 | assert(PyErr_Occurred()); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1842 | return -1; |
Serhiy Storchaka | 813f943 | 2017-04-16 09:21:44 +0300 | [diff] [blame] | 1843 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1844 | i += l; |
| 1845 | } |
| 1846 | } |
| 1847 | return m->sq_ass_item(s, i, (PyObject *)NULL); |
| 1848 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1849 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1850 | if (Py_TYPE(s)->tp_as_mapping && Py_TYPE(s)->tp_as_mapping->mp_ass_subscript) { |
Serhiy Storchaka | a6fdddb | 2018-07-23 23:43:42 +0300 | [diff] [blame] | 1851 | type_error("%.200s is not a sequence", s); |
| 1852 | return -1; |
| 1853 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1854 | type_error("'%.200s' object doesn't support item deletion", s); |
| 1855 | return -1; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1856 | } |
| 1857 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1858 | int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1859 | 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] | 1860 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1861 | PyMappingMethods *mp; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1862 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1863 | if (s == NULL) { |
| 1864 | null_error(); |
| 1865 | return -1; |
| 1866 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1867 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1868 | mp = Py_TYPE(s)->tp_as_mapping; |
Benjamin Peterson | 568867a | 2010-09-11 16:02:03 +0000 | [diff] [blame] | 1869 | if (mp && mp->mp_ass_subscript) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1870 | int res; |
| 1871 | PyObject *slice = _PySlice_FromIndices(i1, i2); |
| 1872 | if (!slice) |
| 1873 | return -1; |
| 1874 | res = mp->mp_ass_subscript(s, slice, o); |
| 1875 | Py_DECREF(slice); |
| 1876 | return res; |
| 1877 | } |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1878 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1879 | type_error("'%.200s' object doesn't support slice assignment", s); |
| 1880 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1881 | } |
| 1882 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1883 | int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1884 | 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] | 1885 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1886 | PyMappingMethods *mp; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1887 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1888 | if (s == NULL) { |
| 1889 | null_error(); |
| 1890 | return -1; |
| 1891 | } |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1892 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 1893 | mp = Py_TYPE(s)->tp_as_mapping; |
Benjamin Peterson | 568867a | 2010-09-11 16:02:03 +0000 | [diff] [blame] | 1894 | if (mp && mp->mp_ass_subscript) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1895 | int res; |
| 1896 | PyObject *slice = _PySlice_FromIndices(i1, i2); |
| 1897 | if (!slice) |
| 1898 | return -1; |
| 1899 | res = mp->mp_ass_subscript(s, slice, NULL); |
| 1900 | Py_DECREF(slice); |
| 1901 | return res; |
| 1902 | } |
| 1903 | type_error("'%.200s' object doesn't support slice deletion", s); |
| 1904 | return -1; |
Guido van Rossum | 6cdc6f4 | 1996-08-21 17:41:54 +0000 | [diff] [blame] | 1905 | } |
| 1906 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1907 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1908 | PySequence_Tuple(PyObject *v) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1909 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1910 | PyObject *it; /* iter(v) */ |
| 1911 | Py_ssize_t n; /* guess for result tuple size */ |
| 1912 | PyObject *result = NULL; |
| 1913 | Py_ssize_t j; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1914 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1915 | if (v == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1916 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1917 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1918 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1919 | /* Special-case the common tuple and list cases, for efficiency. */ |
| 1920 | if (PyTuple_CheckExact(v)) { |
| 1921 | /* Note that we can't know whether it's safe to return |
| 1922 | a tuple *subclass* instance as-is, hence the restriction |
| 1923 | to exact tuples here. In contrast, lists always make |
| 1924 | a copy, so there's no need for exactness below. */ |
| 1925 | Py_INCREF(v); |
| 1926 | return v; |
| 1927 | } |
Raymond Hettinger | 610a51f | 2015-05-17 14:45:58 -0700 | [diff] [blame] | 1928 | if (PyList_CheckExact(v)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1929 | return PyList_AsTuple(v); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1930 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1931 | /* Get iterator. */ |
| 1932 | it = PyObject_GetIter(v); |
| 1933 | if (it == NULL) |
| 1934 | return NULL; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1935 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1936 | /* Guess result size and allocate space. */ |
Armin Ronacher | aa9a79d | 2012-10-06 14:03:24 +0200 | [diff] [blame] | 1937 | n = PyObject_LengthHint(v, 10); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1938 | if (n == -1) |
| 1939 | goto Fail; |
| 1940 | result = PyTuple_New(n); |
| 1941 | if (result == NULL) |
| 1942 | goto Fail; |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1943 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1944 | /* Fill the tuple. */ |
| 1945 | for (j = 0; ; ++j) { |
| 1946 | PyObject *item = PyIter_Next(it); |
| 1947 | if (item == NULL) { |
| 1948 | if (PyErr_Occurred()) |
| 1949 | goto Fail; |
| 1950 | break; |
| 1951 | } |
| 1952 | if (j >= n) { |
Martin Panter | e8db861 | 2016-07-25 02:30:05 +0000 | [diff] [blame] | 1953 | size_t newn = (size_t)n; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1954 | /* The over-allocation strategy can grow a bit faster |
| 1955 | than for lists because unlike lists the |
| 1956 | over-allocation isn't permanent -- we reclaim |
| 1957 | the excess before the end of this routine. |
| 1958 | So, grow by ten and then add 25%. |
| 1959 | */ |
Martin Panter | e8db861 | 2016-07-25 02:30:05 +0000 | [diff] [blame] | 1960 | newn += 10u; |
| 1961 | newn += newn >> 2; |
| 1962 | if (newn > PY_SSIZE_T_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1963 | /* Check for overflow */ |
| 1964 | PyErr_NoMemory(); |
| 1965 | Py_DECREF(item); |
| 1966 | goto Fail; |
| 1967 | } |
Martin Panter | e8db861 | 2016-07-25 02:30:05 +0000 | [diff] [blame] | 1968 | n = (Py_ssize_t)newn; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1969 | if (_PyTuple_Resize(&result, n) != 0) { |
| 1970 | Py_DECREF(item); |
| 1971 | goto Fail; |
| 1972 | } |
| 1973 | } |
| 1974 | PyTuple_SET_ITEM(result, j, item); |
| 1975 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 1976 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1977 | /* Cut tuple back if guess was too large. */ |
| 1978 | if (j < n && |
| 1979 | _PyTuple_Resize(&result, j) != 0) |
| 1980 | goto Fail; |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1981 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1982 | Py_DECREF(it); |
| 1983 | return result; |
Tim Peters | 6912d4d | 2001-05-05 03:56:37 +0000 | [diff] [blame] | 1984 | |
| 1985 | Fail: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1986 | Py_XDECREF(result); |
| 1987 | Py_DECREF(it); |
| 1988 | return NULL; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 1989 | } |
| 1990 | |
Guido van Rossum | 3c5936a | 1996-12-05 21:51:24 +0000 | [diff] [blame] | 1991 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1992 | PySequence_List(PyObject *v) |
Guido van Rossum | 3c5936a | 1996-12-05 21:51:24 +0000 | [diff] [blame] | 1993 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1994 | PyObject *result; /* result list */ |
| 1995 | PyObject *rv; /* return value from PyList_Extend */ |
Guido van Rossum | 4669fb4 | 1997-04-02 05:31:09 +0000 | [diff] [blame] | 1996 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1997 | if (v == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1998 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 1999 | } |
Guido van Rossum | 5dba9e8 | 1998-07-10 18:03:50 +0000 | [diff] [blame] | 2000 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2001 | result = PyList_New(0); |
| 2002 | if (result == NULL) |
| 2003 | return NULL; |
Tim Peters | f553f89 | 2001-05-01 20:45:31 +0000 | [diff] [blame] | 2004 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2005 | rv = _PyList_Extend((PyListObject *)result, v); |
| 2006 | if (rv == NULL) { |
| 2007 | Py_DECREF(result); |
| 2008 | return NULL; |
| 2009 | } |
| 2010 | Py_DECREF(rv); |
| 2011 | return result; |
Guido van Rossum | 3c5936a | 1996-12-05 21:51:24 +0000 | [diff] [blame] | 2012 | } |
| 2013 | |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 2014 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2015 | PySequence_Fast(PyObject *v, const char *m) |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 2016 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2017 | PyObject *it; |
Raymond Hettinger | 2fb7029 | 2004-01-11 23:26:51 +0000 | [diff] [blame] | 2018 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 2019 | if (v == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2020 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 2021 | } |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 2022 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2023 | if (PyList_CheckExact(v) || PyTuple_CheckExact(v)) { |
| 2024 | Py_INCREF(v); |
| 2025 | return v; |
| 2026 | } |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 2027 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2028 | it = PyObject_GetIter(v); |
| 2029 | if (it == NULL) { |
| 2030 | if (PyErr_ExceptionMatches(PyExc_TypeError)) |
| 2031 | PyErr_SetString(PyExc_TypeError, m); |
| 2032 | return NULL; |
| 2033 | } |
Raymond Hettinger | 2fb7029 | 2004-01-11 23:26:51 +0000 | [diff] [blame] | 2034 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2035 | v = PySequence_List(it); |
| 2036 | Py_DECREF(it); |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 2037 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2038 | return v; |
Andrew M. Kuchling | 74042d6 | 2000-06-18 18:43:14 +0000 | [diff] [blame] | 2039 | } |
| 2040 | |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2041 | /* Iterate over seq. Result depends on the operation: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2042 | PY_ITERSEARCH_COUNT: -1 if error, else # of times obj appears in seq. |
| 2043 | PY_ITERSEARCH_INDEX: 0-based index of first occurrence of obj in seq; |
| 2044 | 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] | 2045 | Py_ITERSEARCH_CONTAINS: return 1 if obj in seq, else 0; -1 on error. |
| 2046 | */ |
Neal Norwitz | 1fc4b77 | 2006-03-04 18:49:58 +0000 | [diff] [blame] | 2047 | Py_ssize_t |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2048 | _PySequence_IterSearch(PyObject *seq, PyObject *obj, int operation) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2049 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2050 | Py_ssize_t n; |
| 2051 | int wrapped; /* for PY_ITERSEARCH_INDEX, true iff n wrapped around */ |
| 2052 | PyObject *it; /* iter(seq) */ |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2053 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2054 | if (seq == NULL || obj == NULL) { |
| 2055 | null_error(); |
| 2056 | return -1; |
| 2057 | } |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 2058 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2059 | it = PyObject_GetIter(seq); |
| 2060 | if (it == NULL) { |
| 2061 | type_error("argument of type '%.200s' is not iterable", seq); |
| 2062 | return -1; |
| 2063 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2064 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2065 | n = wrapped = 0; |
| 2066 | for (;;) { |
| 2067 | int cmp; |
| 2068 | PyObject *item = PyIter_Next(it); |
| 2069 | if (item == NULL) { |
| 2070 | if (PyErr_Occurred()) |
| 2071 | goto Fail; |
| 2072 | break; |
| 2073 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2074 | |
Serhiy Storchaka | 18b711c | 2019-08-04 14:12:48 +0300 | [diff] [blame] | 2075 | cmp = PyObject_RichCompareBool(item, obj, Py_EQ); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2076 | Py_DECREF(item); |
| 2077 | if (cmp < 0) |
| 2078 | goto Fail; |
| 2079 | if (cmp > 0) { |
| 2080 | switch (operation) { |
| 2081 | case PY_ITERSEARCH_COUNT: |
| 2082 | if (n == PY_SSIZE_T_MAX) { |
| 2083 | PyErr_SetString(PyExc_OverflowError, |
| 2084 | "count exceeds C integer size"); |
| 2085 | goto Fail; |
| 2086 | } |
| 2087 | ++n; |
| 2088 | break; |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2089 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2090 | case PY_ITERSEARCH_INDEX: |
| 2091 | if (wrapped) { |
| 2092 | PyErr_SetString(PyExc_OverflowError, |
| 2093 | "index exceeds C integer size"); |
| 2094 | goto Fail; |
| 2095 | } |
| 2096 | goto Done; |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2097 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2098 | case PY_ITERSEARCH_CONTAINS: |
| 2099 | n = 1; |
| 2100 | goto Done; |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2101 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2102 | default: |
Barry Warsaw | b2e5794 | 2017-09-14 18:13:16 -0700 | [diff] [blame] | 2103 | Py_UNREACHABLE(); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2104 | } |
| 2105 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2106 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2107 | if (operation == PY_ITERSEARCH_INDEX) { |
| 2108 | if (n == PY_SSIZE_T_MAX) |
| 2109 | wrapped = 1; |
| 2110 | ++n; |
| 2111 | } |
| 2112 | } |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2113 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2114 | if (operation != PY_ITERSEARCH_INDEX) |
| 2115 | goto Done; |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2116 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2117 | PyErr_SetString(PyExc_ValueError, |
| 2118 | "sequence.index(x): x not in sequence"); |
| 2119 | /* fall into failure code */ |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2120 | Fail: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2121 | n = -1; |
| 2122 | /* fall through */ |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2123 | Done: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2124 | Py_DECREF(it); |
| 2125 | return n; |
Tim Peters | 75f8e35 | 2001-05-05 11:33:43 +0000 | [diff] [blame] | 2126 | |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2127 | } |
| 2128 | |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2129 | /* Return # of times o appears in s. */ |
Neal Norwitz | 1fc4b77 | 2006-03-04 18:49:58 +0000 | [diff] [blame] | 2130 | Py_ssize_t |
Tim Peters | 16a77ad | 2001-09-08 04:00:12 +0000 | [diff] [blame] | 2131 | PySequence_Count(PyObject *s, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2132 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2133 | return _PySequence_IterSearch(s, o, PY_ITERSEARCH_COUNT); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2134 | } |
| 2135 | |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 2136 | /* 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] | 2137 | * Use sq_contains if possible, else defer to _PySequence_IterSearch(). |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 2138 | */ |
| 2139 | int |
| 2140 | PySequence_Contains(PyObject *seq, PyObject *ob) |
| 2141 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2142 | Py_ssize_t result; |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 2143 | PySequenceMethods *sqm = Py_TYPE(seq)->tp_as_sequence; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2144 | if (sqm != NULL && sqm->sq_contains != NULL) |
| 2145 | return (*sqm->sq_contains)(seq, ob); |
| 2146 | result = _PySequence_IterSearch(seq, ob, PY_ITERSEARCH_CONTAINS); |
| 2147 | return Py_SAFE_DOWNCAST(result, Py_ssize_t, int); |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 2148 | } |
| 2149 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2150 | /* Backwards compatibility */ |
| 2151 | #undef PySequence_In |
| 2152 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2153 | PySequence_In(PyObject *w, PyObject *v) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2154 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2155 | return PySequence_Contains(w, v); |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2156 | } |
| 2157 | |
Neal Norwitz | 1fc4b77 | 2006-03-04 18:49:58 +0000 | [diff] [blame] | 2158 | Py_ssize_t |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2159 | PySequence_Index(PyObject *s, PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2160 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2161 | return _PySequence_IterSearch(s, o, PY_ITERSEARCH_INDEX); |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2162 | } |
| 2163 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2164 | /* Operations on mappings */ |
| 2165 | |
| 2166 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2167 | PyMapping_Check(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2168 | { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 2169 | return o && Py_TYPE(o)->tp_as_mapping && |
| 2170 | Py_TYPE(o)->tp_as_mapping->mp_subscript; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2171 | } |
| 2172 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 2173 | Py_ssize_t |
Jeremy Hylton | 6253f83 | 2000-07-12 12:56:19 +0000 | [diff] [blame] | 2174 | PyMapping_Size(PyObject *o) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2175 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2176 | PyMappingMethods *m; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2177 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2178 | if (o == NULL) { |
| 2179 | null_error(); |
| 2180 | return -1; |
| 2181 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2182 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 2183 | m = Py_TYPE(o)->tp_as_mapping; |
Serhiy Storchaka | 813f943 | 2017-04-16 09:21:44 +0300 | [diff] [blame] | 2184 | if (m && m->mp_length) { |
| 2185 | Py_ssize_t len = m->mp_length(o); |
| 2186 | assert(len >= 0 || PyErr_Occurred()); |
| 2187 | return len; |
| 2188 | } |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2189 | |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 2190 | if (Py_TYPE(o)->tp_as_sequence && Py_TYPE(o)->tp_as_sequence->sq_length) { |
Serhiy Storchaka | a6fdddb | 2018-07-23 23:43:42 +0300 | [diff] [blame] | 2191 | type_error("%.200s is not a mapping", o); |
| 2192 | return -1; |
| 2193 | } |
| 2194 | /* PyMapping_Size() can be called from PyObject_Size(). */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2195 | type_error("object of type '%.200s' has no len()", o); |
| 2196 | return -1; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2197 | } |
| 2198 | |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 2199 | #undef PyMapping_Length |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 2200 | Py_ssize_t |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 2201 | PyMapping_Length(PyObject *o) |
| 2202 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2203 | return PyMapping_Size(o); |
Marc-André Lemburg | cf5f358 | 2000-07-17 09:22:55 +0000 | [diff] [blame] | 2204 | } |
| 2205 | #define PyMapping_Length PyMapping_Size |
| 2206 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2207 | PyObject * |
Serhiy Storchaka | c679227 | 2013-10-19 21:03:34 +0300 | [diff] [blame] | 2208 | PyMapping_GetItemString(PyObject *o, const char *key) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2209 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2210 | PyObject *okey, *r; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2211 | |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 2212 | if (key == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2213 | return null_error(); |
Victor Stinner | 71aea8e | 2016-08-19 16:59:55 +0200 | [diff] [blame] | 2214 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2215 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2216 | okey = PyUnicode_FromString(key); |
| 2217 | if (okey == NULL) |
| 2218 | return NULL; |
| 2219 | r = PyObject_GetItem(o, okey); |
| 2220 | Py_DECREF(okey); |
| 2221 | return r; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2222 | } |
| 2223 | |
| 2224 | int |
Serhiy Storchaka | c679227 | 2013-10-19 21:03:34 +0300 | [diff] [blame] | 2225 | PyMapping_SetItemString(PyObject *o, const char *key, PyObject *value) |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2226 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2227 | PyObject *okey; |
| 2228 | int r; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2229 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2230 | if (key == NULL) { |
| 2231 | null_error(); |
| 2232 | return -1; |
| 2233 | } |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2234 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2235 | okey = PyUnicode_FromString(key); |
| 2236 | if (okey == NULL) |
| 2237 | return -1; |
| 2238 | r = PyObject_SetItem(o, okey, value); |
| 2239 | Py_DECREF(okey); |
| 2240 | return r; |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2241 | } |
| 2242 | |
| 2243 | int |
Serhiy Storchaka | c679227 | 2013-10-19 21:03:34 +0300 | [diff] [blame] | 2244 | PyMapping_HasKeyString(PyObject *o, const char *key) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2245 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2246 | PyObject *v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2247 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2248 | v = PyMapping_GetItemString(o, key); |
| 2249 | if (v) { |
| 2250 | Py_DECREF(v); |
| 2251 | return 1; |
| 2252 | } |
| 2253 | PyErr_Clear(); |
| 2254 | return 0; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2255 | } |
| 2256 | |
Guido van Rossum | cea1c8c | 1998-05-22 00:47:05 +0000 | [diff] [blame] | 2257 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2258 | PyMapping_HasKey(PyObject *o, PyObject *key) |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2259 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2260 | PyObject *v; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2261 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2262 | v = PyObject_GetItem(o, key); |
| 2263 | if (v) { |
| 2264 | Py_DECREF(v); |
| 2265 | return 1; |
| 2266 | } |
| 2267 | PyErr_Clear(); |
| 2268 | return 0; |
Guido van Rossum | e15dee5 | 1995-07-18 14:12:02 +0000 | [diff] [blame] | 2269 | } |
| 2270 | |
Oren Milman | 0ccc0f6 | 2017-10-08 11:17:46 +0300 | [diff] [blame] | 2271 | /* This function is quite similar to PySequence_Fast(), but specialized to be |
| 2272 | a helper for PyMapping_Keys(), PyMapping_Items() and PyMapping_Values(). |
| 2273 | */ |
| 2274 | static PyObject * |
| 2275 | method_output_as_list(PyObject *o, _Py_Identifier *meth_id) |
| 2276 | { |
| 2277 | PyObject *it, *result, *meth_output; |
| 2278 | |
| 2279 | assert(o != NULL); |
Jeroen Demeyer | 762f93f | 2019-07-08 10:19:25 +0200 | [diff] [blame] | 2280 | meth_output = _PyObject_CallMethodIdNoArgs(o, meth_id); |
Oren Milman | 0ccc0f6 | 2017-10-08 11:17:46 +0300 | [diff] [blame] | 2281 | if (meth_output == NULL || PyList_CheckExact(meth_output)) { |
| 2282 | return meth_output; |
| 2283 | } |
| 2284 | it = PyObject_GetIter(meth_output); |
| 2285 | if (it == NULL) { |
| 2286 | if (PyErr_ExceptionMatches(PyExc_TypeError)) { |
| 2287 | PyErr_Format(PyExc_TypeError, |
| 2288 | "%.200s.%U() returned a non-iterable (type %.200s)", |
| 2289 | Py_TYPE(o)->tp_name, |
| 2290 | meth_id->object, |
| 2291 | Py_TYPE(meth_output)->tp_name); |
| 2292 | } |
| 2293 | Py_DECREF(meth_output); |
| 2294 | return NULL; |
| 2295 | } |
| 2296 | Py_DECREF(meth_output); |
| 2297 | result = PySequence_List(it); |
| 2298 | Py_DECREF(it); |
| 2299 | return result; |
| 2300 | } |
| 2301 | |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2302 | PyObject * |
| 2303 | PyMapping_Keys(PyObject *o) |
| 2304 | { |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 2305 | _Py_IDENTIFIER(keys); |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2306 | |
Oren Milman | 0ccc0f6 | 2017-10-08 11:17:46 +0300 | [diff] [blame] | 2307 | if (o == NULL) { |
| 2308 | return null_error(); |
| 2309 | } |
| 2310 | if (PyDict_CheckExact(o)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2311 | return PyDict_Keys(o); |
Oren Milman | 0ccc0f6 | 2017-10-08 11:17:46 +0300 | [diff] [blame] | 2312 | } |
| 2313 | return method_output_as_list(o, &PyId_keys); |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2314 | } |
| 2315 | |
| 2316 | PyObject * |
| 2317 | PyMapping_Items(PyObject *o) |
| 2318 | { |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 2319 | _Py_IDENTIFIER(items); |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2320 | |
Oren Milman | 0ccc0f6 | 2017-10-08 11:17:46 +0300 | [diff] [blame] | 2321 | if (o == NULL) { |
| 2322 | return null_error(); |
| 2323 | } |
| 2324 | if (PyDict_CheckExact(o)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2325 | return PyDict_Items(o); |
Oren Milman | 0ccc0f6 | 2017-10-08 11:17:46 +0300 | [diff] [blame] | 2326 | } |
| 2327 | return method_output_as_list(o, &PyId_items); |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2328 | } |
| 2329 | |
| 2330 | PyObject * |
| 2331 | PyMapping_Values(PyObject *o) |
| 2332 | { |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 2333 | _Py_IDENTIFIER(values); |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2334 | |
Oren Milman | 0ccc0f6 | 2017-10-08 11:17:46 +0300 | [diff] [blame] | 2335 | if (o == NULL) { |
| 2336 | return null_error(); |
| 2337 | } |
| 2338 | if (PyDict_CheckExact(o)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2339 | return PyDict_Values(o); |
Oren Milman | 0ccc0f6 | 2017-10-08 11:17:46 +0300 | [diff] [blame] | 2340 | } |
| 2341 | return method_output_as_list(o, &PyId_values); |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 2342 | } |
| 2343 | |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2344 | /* isinstance(), issubclass() */ |
| 2345 | |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 2346 | /* abstract_get_bases() has logically 4 return states: |
Barry Warsaw | f16951c | 2002-04-23 22:45:44 +0000 | [diff] [blame] | 2347 | * |
Barry Warsaw | f16951c | 2002-04-23 22:45:44 +0000 | [diff] [blame] | 2348 | * 1. getattr(cls, '__bases__') could raise an AttributeError |
| 2349 | * 2. getattr(cls, '__bases__') could raise some other exception |
| 2350 | * 3. getattr(cls, '__bases__') could return a tuple |
| 2351 | * 4. getattr(cls, '__bases__') could return something other than a tuple |
| 2352 | * |
| 2353 | * Only state #3 is a non-error state and only it returns a non-NULL object |
| 2354 | * (it returns the retrieved tuple). |
| 2355 | * |
| 2356 | * Any raised AttributeErrors are masked by clearing the exception and |
| 2357 | * returning NULL. If an object other than a tuple comes out of __bases__, |
| 2358 | * then again, the return value is NULL. So yes, these two situations |
| 2359 | * produce exactly the same results: NULL is returned and no error is set. |
| 2360 | * |
| 2361 | * If some exception other than AttributeError is raised, then NULL is also |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2362 | * 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] | 2363 | * exception to be propagated along. |
| 2364 | * |
| 2365 | * Callers are expected to test for PyErr_Occurred() when the return value |
| 2366 | * is NULL to decide whether a valid exception should be propagated or not. |
| 2367 | * When there's no exception to propagate, it's customary for the caller to |
| 2368 | * set a TypeError. |
| 2369 | */ |
Neil Schemenauer | 6b47129 | 2001-10-18 03:18:43 +0000 | [diff] [blame] | 2370 | static PyObject * |
| 2371 | abstract_get_bases(PyObject *cls) |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2372 | { |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 2373 | _Py_IDENTIFIER(__bases__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2374 | PyObject *bases; |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2375 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2376 | Py_ALLOW_RECURSION |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 2377 | (void)_PyObject_LookupAttrId(cls, &PyId___bases__, &bases); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2378 | Py_END_ALLOW_RECURSION |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 2379 | if (bases != NULL && !PyTuple_Check(bases)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2380 | Py_DECREF(bases); |
| 2381 | return NULL; |
| 2382 | } |
| 2383 | return bases; |
Neil Schemenauer | 6b47129 | 2001-10-18 03:18:43 +0000 | [diff] [blame] | 2384 | } |
| 2385 | |
| 2386 | |
| 2387 | static int |
| 2388 | abstract_issubclass(PyObject *derived, PyObject *cls) |
| 2389 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2390 | PyObject *bases = NULL; |
| 2391 | Py_ssize_t i, n; |
| 2392 | int r = 0; |
Neil Schemenauer | 6b47129 | 2001-10-18 03:18:43 +0000 | [diff] [blame] | 2393 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2394 | while (1) { |
Yonatan Goldschmidt | 1c56f8f | 2020-02-22 15:11:48 +0200 | [diff] [blame] | 2395 | if (derived == cls) { |
| 2396 | Py_XDECREF(bases); /* See below comment */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2397 | return 1; |
Yonatan Goldschmidt | 1c56f8f | 2020-02-22 15:11:48 +0200 | [diff] [blame] | 2398 | } |
| 2399 | /* Use XSETREF to drop bases reference *after* finishing with |
| 2400 | derived; bases might be the only reference to it. |
| 2401 | XSETREF is used instead of SETREF, because bases is NULL on the |
| 2402 | first iteration of the loop. |
| 2403 | */ |
| 2404 | Py_XSETREF(bases, abstract_get_bases(derived)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2405 | if (bases == NULL) { |
| 2406 | if (PyErr_Occurred()) |
| 2407 | return -1; |
| 2408 | return 0; |
| 2409 | } |
| 2410 | n = PyTuple_GET_SIZE(bases); |
| 2411 | if (n == 0) { |
| 2412 | Py_DECREF(bases); |
| 2413 | return 0; |
| 2414 | } |
| 2415 | /* Avoid recursivity in the single inheritance case */ |
| 2416 | if (n == 1) { |
| 2417 | derived = PyTuple_GET_ITEM(bases, 0); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2418 | continue; |
| 2419 | } |
| 2420 | for (i = 0; i < n; i++) { |
| 2421 | r = abstract_issubclass(PyTuple_GET_ITEM(bases, i), cls); |
| 2422 | if (r != 0) |
| 2423 | break; |
| 2424 | } |
| 2425 | Py_DECREF(bases); |
| 2426 | return r; |
| 2427 | } |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2428 | } |
| 2429 | |
Walter Dörwald | d9a6ad3 | 2002-12-12 16:41:44 +0000 | [diff] [blame] | 2430 | static int |
| 2431 | check_class(PyObject *cls, const char *error) |
| 2432 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2433 | PyObject *bases = abstract_get_bases(cls); |
| 2434 | if (bases == NULL) { |
| 2435 | /* Do not mask errors. */ |
| 2436 | if (!PyErr_Occurred()) |
| 2437 | PyErr_SetString(PyExc_TypeError, error); |
| 2438 | return 0; |
| 2439 | } |
| 2440 | Py_DECREF(bases); |
| 2441 | return -1; |
Walter Dörwald | d9a6ad3 | 2002-12-12 16:41:44 +0000 | [diff] [blame] | 2442 | } |
| 2443 | |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2444 | static int |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2445 | object_isinstance(PyObject *inst, PyObject *cls) |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2446 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2447 | PyObject *icls; |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 2448 | int retval; |
Benjamin Peterson | 9fc9bf4 | 2012-03-20 23:26:41 -0400 | [diff] [blame] | 2449 | _Py_IDENTIFIER(__class__); |
Guido van Rossum | 03bc7d3 | 2003-02-12 03:32:58 +0000 | [diff] [blame] | 2450 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2451 | if (PyType_Check(cls)) { |
| 2452 | retval = PyObject_TypeCheck(inst, (PyTypeObject *)cls); |
| 2453 | if (retval == 0) { |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 2454 | retval = _PyObject_LookupAttrId(inst, &PyId___class__, &icls); |
| 2455 | if (icls != NULL) { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 2456 | if (icls != (PyObject *)(Py_TYPE(inst)) && PyType_Check(icls)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2457 | retval = PyType_IsSubtype( |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 2458 | (PyTypeObject *)icls, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2459 | (PyTypeObject *)cls); |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 2460 | } |
| 2461 | else { |
| 2462 | retval = 0; |
| 2463 | } |
| 2464 | Py_DECREF(icls); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2465 | } |
| 2466 | } |
| 2467 | } |
| 2468 | else { |
| 2469 | if (!check_class(cls, |
Benjamin Peterson | e893af5 | 2010-06-28 19:43:42 +0000 | [diff] [blame] | 2470 | "isinstance() arg 2 must be a type or tuple of types")) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2471 | return -1; |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 2472 | retval = _PyObject_LookupAttrId(inst, &PyId___class__, &icls); |
| 2473 | if (icls != NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2474 | retval = abstract_issubclass(icls, cls); |
| 2475 | Py_DECREF(icls); |
| 2476 | } |
| 2477 | } |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2478 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2479 | return retval; |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2480 | } |
| 2481 | |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2482 | static int |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2483 | object_recursive_isinstance(PyThreadState *tstate, PyObject *inst, PyObject *cls) |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2484 | { |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 2485 | _Py_IDENTIFIER(__instancecheck__); |
Christian Heimes | d5e2b6f | 2008-03-19 21:50:51 +0000 | [diff] [blame] | 2486 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2487 | /* Quick test for an exact match */ |
Andy Lester | dffe4c0 | 2020-03-04 07:15:20 -0600 | [diff] [blame] | 2488 | if (Py_IS_TYPE(inst, (PyTypeObject *)cls)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2489 | return 1; |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2490 | } |
Christian Heimes | d5e2b6f | 2008-03-19 21:50:51 +0000 | [diff] [blame] | 2491 | |
Georg Brandl | 72b8a80 | 2014-10-03 09:26:37 +0200 | [diff] [blame] | 2492 | /* We know what type's __instancecheck__ does. */ |
| 2493 | if (PyType_CheckExact(cls)) { |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2494 | return object_isinstance(inst, cls); |
Georg Brandl | 72b8a80 | 2014-10-03 09:26:37 +0200 | [diff] [blame] | 2495 | } |
| 2496 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2497 | if (PyTuple_Check(cls)) { |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2498 | /* Not a general sequence -- that opens up the road to |
| 2499 | recursion and stack overflow. */ |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2500 | if (_Py_EnterRecursiveCall(tstate, " in __instancecheck__")) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2501 | return -1; |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2502 | } |
| 2503 | Py_ssize_t n = PyTuple_GET_SIZE(cls); |
| 2504 | int r = 0; |
| 2505 | for (Py_ssize_t i = 0; i < n; ++i) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2506 | PyObject *item = PyTuple_GET_ITEM(cls, i); |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2507 | r = object_recursive_isinstance(tstate, inst, item); |
| 2508 | if (r != 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2509 | /* either found it, or got an error */ |
| 2510 | break; |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2511 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2512 | } |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2513 | _Py_LeaveRecursiveCall(tstate); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2514 | return r; |
| 2515 | } |
Benjamin Peterson | 88fe5f9 | 2009-05-16 21:55:24 +0000 | [diff] [blame] | 2516 | |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2517 | PyObject *checker = _PyObject_LookupSpecial(cls, &PyId___instancecheck__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2518 | if (checker != NULL) { |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2519 | if (_Py_EnterRecursiveCall(tstate, " in __instancecheck__")) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2520 | Py_DECREF(checker); |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2521 | return -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2522 | } |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2523 | |
Petr Viktorin | ffd9753 | 2020-02-11 17:46:57 +0100 | [diff] [blame] | 2524 | PyObject *res = PyObject_CallOneArg(checker, inst); |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2525 | _Py_LeaveRecursiveCall(tstate); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2526 | Py_DECREF(checker); |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2527 | |
| 2528 | if (res == NULL) { |
| 2529 | return -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2530 | } |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2531 | int ok = PyObject_IsTrue(res); |
| 2532 | Py_DECREF(res); |
| 2533 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2534 | return ok; |
| 2535 | } |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2536 | else if (_PyErr_Occurred(tstate)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2537 | return -1; |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2538 | } |
| 2539 | |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2540 | /* cls has no __instancecheck__() method */ |
| 2541 | return object_isinstance(inst, cls); |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2542 | } |
| 2543 | |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2544 | |
| 2545 | int |
| 2546 | PyObject_IsInstance(PyObject *inst, PyObject *cls) |
| 2547 | { |
| 2548 | PyThreadState *tstate = _PyThreadState_GET(); |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2549 | return object_recursive_isinstance(tstate, inst, cls); |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2550 | } |
| 2551 | |
| 2552 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2553 | static int |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2554 | recursive_issubclass(PyObject *derived, PyObject *cls) |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2555 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2556 | if (PyType_Check(cls) && PyType_Check(derived)) { |
| 2557 | /* Fast path (non-recursive) */ |
| 2558 | return PyType_IsSubtype((PyTypeObject *)derived, (PyTypeObject *)cls); |
| 2559 | } |
| 2560 | if (!check_class(derived, |
| 2561 | "issubclass() arg 1 must be a class")) |
| 2562 | return -1; |
| 2563 | if (!check_class(cls, |
| 2564 | "issubclass() arg 2 must be a class" |
| 2565 | " or tuple of classes")) |
| 2566 | return -1; |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2567 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2568 | return abstract_issubclass(derived, cls); |
Guido van Rossum | 823649d | 2001-03-21 18:40:58 +0000 | [diff] [blame] | 2569 | } |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 2570 | |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2571 | static int |
| 2572 | object_issubclass(PyThreadState *tstate, PyObject *derived, PyObject *cls) |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2573 | { |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 2574 | _Py_IDENTIFIER(__subclasscheck__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2575 | PyObject *checker; |
Georg Brandl | dcfe8e4 | 2009-05-17 08:22:45 +0000 | [diff] [blame] | 2576 | |
Georg Brandl | 72b8a80 | 2014-10-03 09:26:37 +0200 | [diff] [blame] | 2577 | /* We know what type's __subclasscheck__ does. */ |
| 2578 | if (PyType_CheckExact(cls)) { |
| 2579 | /* Quick test for an exact match */ |
| 2580 | if (derived == cls) |
| 2581 | return 1; |
| 2582 | return recursive_issubclass(derived, cls); |
| 2583 | } |
| 2584 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2585 | if (PyTuple_Check(cls)) { |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2586 | |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2587 | if (_Py_EnterRecursiveCall(tstate, " in __subclasscheck__")) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2588 | return -1; |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2589 | } |
| 2590 | Py_ssize_t n = PyTuple_GET_SIZE(cls); |
| 2591 | int r = 0; |
| 2592 | for (Py_ssize_t i = 0; i < n; ++i) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2593 | PyObject *item = PyTuple_GET_ITEM(cls, i); |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2594 | r = object_issubclass(tstate, derived, item); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2595 | if (r != 0) |
| 2596 | /* either found it, or got an error */ |
| 2597 | break; |
| 2598 | } |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2599 | _Py_LeaveRecursiveCall(tstate); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2600 | return r; |
| 2601 | } |
Benjamin Peterson | 88fe5f9 | 2009-05-16 21:55:24 +0000 | [diff] [blame] | 2602 | |
Benjamin Peterson | ce79852 | 2012-01-22 11:24:29 -0500 | [diff] [blame] | 2603 | checker = _PyObject_LookupSpecial(cls, &PyId___subclasscheck__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2604 | if (checker != NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2605 | int ok = -1; |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2606 | if (_Py_EnterRecursiveCall(tstate, " in __subclasscheck__")) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2607 | Py_DECREF(checker); |
| 2608 | return ok; |
| 2609 | } |
Petr Viktorin | ffd9753 | 2020-02-11 17:46:57 +0100 | [diff] [blame] | 2610 | PyObject *res = PyObject_CallOneArg(checker, derived); |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2611 | _Py_LeaveRecursiveCall(tstate); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2612 | Py_DECREF(checker); |
| 2613 | if (res != NULL) { |
| 2614 | ok = PyObject_IsTrue(res); |
| 2615 | Py_DECREF(res); |
| 2616 | } |
| 2617 | return ok; |
| 2618 | } |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2619 | else if (_PyErr_Occurred(tstate)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2620 | return -1; |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2621 | } |
| 2622 | |
Georg Brandl | 72b8a80 | 2014-10-03 09:26:37 +0200 | [diff] [blame] | 2623 | /* Probably never reached anymore. */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2624 | return recursive_issubclass(derived, cls); |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2625 | } |
| 2626 | |
Victor Stinner | be434dc | 2019-11-05 00:51:22 +0100 | [diff] [blame] | 2627 | |
| 2628 | int |
| 2629 | PyObject_IsSubclass(PyObject *derived, PyObject *cls) |
| 2630 | { |
| 2631 | PyThreadState *tstate = _PyThreadState_GET(); |
| 2632 | return object_issubclass(tstate, derived, cls); |
| 2633 | } |
| 2634 | |
| 2635 | |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2636 | int |
| 2637 | _PyObject_RealIsInstance(PyObject *inst, PyObject *cls) |
| 2638 | { |
Victor Stinner | 850a4bd | 2020-02-04 13:42:13 +0100 | [diff] [blame] | 2639 | return object_isinstance(inst, cls); |
Antoine Pitrou | ec569b7 | 2008-08-26 22:40:48 +0000 | [diff] [blame] | 2640 | } |
| 2641 | |
| 2642 | int |
| 2643 | _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls) |
| 2644 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2645 | return recursive_issubclass(derived, cls); |
Brett Cannon | 4f65331 | 2004-03-20 22:52:14 +0000 | [diff] [blame] | 2646 | } |
| 2647 | |
| 2648 | |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 2649 | PyObject * |
| 2650 | PyObject_GetIter(PyObject *o) |
| 2651 | { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 2652 | PyTypeObject *t = Py_TYPE(o); |
Victor Stinner | 14e6d09 | 2016-12-09 17:08:59 +0100 | [diff] [blame] | 2653 | getiterfunc f; |
| 2654 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2655 | f = t->tp_iter; |
| 2656 | if (f == NULL) { |
| 2657 | if (PySequence_Check(o)) |
| 2658 | return PySeqIter_New(o); |
| 2659 | return type_error("'%.200s' object is not iterable", o); |
| 2660 | } |
| 2661 | else { |
| 2662 | PyObject *res = (*f)(o); |
| 2663 | if (res != NULL && !PyIter_Check(res)) { |
| 2664 | PyErr_Format(PyExc_TypeError, |
| 2665 | "iter() returned non-iterator " |
| 2666 | "of type '%.100s'", |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 2667 | Py_TYPE(res)->tp_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2668 | Py_DECREF(res); |
| 2669 | res = NULL; |
| 2670 | } |
| 2671 | return res; |
| 2672 | } |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 2673 | } |
| 2674 | |
Christian Tismer | ea62ce7 | 2018-06-09 20:32:25 +0200 | [diff] [blame] | 2675 | #undef PyIter_Check |
Christian Tismer | 8398713 | 2018-06-11 00:48:28 +0200 | [diff] [blame] | 2676 | |
Christian Tismer | ea62ce7 | 2018-06-09 20:32:25 +0200 | [diff] [blame] | 2677 | int PyIter_Check(PyObject *obj) |
| 2678 | { |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 2679 | return Py_TYPE(obj)->tp_iternext != NULL && |
| 2680 | Py_TYPE(obj)->tp_iternext != &_PyObject_NextNotImplemented; |
Christian Tismer | ea62ce7 | 2018-06-09 20:32:25 +0200 | [diff] [blame] | 2681 | } |
| 2682 | |
Tim Peters | f4848da | 2001-05-05 00:14:56 +0000 | [diff] [blame] | 2683 | /* Return next item. |
| 2684 | * If an error occurs, return NULL. PyErr_Occurred() will be true. |
| 2685 | * If the iteration terminates normally, return NULL and clear the |
| 2686 | * PyExc_StopIteration exception (if it was set). PyErr_Occurred() |
| 2687 | * will be false. |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2688 | * Else return the next object. PyErr_Occurred() will be false. |
Tim Peters | f4848da | 2001-05-05 00:14:56 +0000 | [diff] [blame] | 2689 | */ |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 2690 | PyObject * |
| 2691 | PyIter_Next(PyObject *iter) |
| 2692 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2693 | PyObject *result; |
Victor Stinner | 0d76d2b | 2020-02-07 01:53:23 +0100 | [diff] [blame] | 2694 | result = (*Py_TYPE(iter)->tp_iternext)(iter); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2695 | if (result == NULL && |
| 2696 | PyErr_Occurred() && |
| 2697 | PyErr_ExceptionMatches(PyExc_StopIteration)) |
| 2698 | PyErr_Clear(); |
| 2699 | return result; |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 2700 | } |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2701 | |
| 2702 | |
| 2703 | /* |
| 2704 | * Flatten a sequence of bytes() objects into a C array of |
| 2705 | * NULL terminated string pointers with a NULL char* terminating the array. |
| 2706 | * (ie: an argv or env list) |
| 2707 | * |
Victor Stinner | 0e2d3cf | 2013-07-07 17:22:41 +0200 | [diff] [blame] | 2708 | * Memory allocated for the returned list is allocated using PyMem_Malloc() |
| 2709 | * and MUST be freed by _Py_FreeCharPArray(). |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2710 | */ |
| 2711 | char *const * |
| 2712 | _PySequence_BytesToCharpArray(PyObject* self) |
| 2713 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2714 | char **array; |
| 2715 | Py_ssize_t i, argc; |
| 2716 | PyObject *item = NULL; |
Victor Stinner | 0e2d3cf | 2013-07-07 17:22:41 +0200 | [diff] [blame] | 2717 | Py_ssize_t size; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2718 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2719 | argc = PySequence_Size(self); |
| 2720 | if (argc == -1) |
| 2721 | return NULL; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2722 | |
Stefan Krah | 7cacd2e | 2012-08-21 08:16:09 +0200 | [diff] [blame] | 2723 | assert(argc >= 0); |
| 2724 | |
| 2725 | if ((size_t)argc > (PY_SSIZE_T_MAX-sizeof(char *)) / sizeof(char *)) { |
| 2726 | PyErr_NoMemory(); |
| 2727 | return NULL; |
| 2728 | } |
| 2729 | |
Victor Stinner | 0e2d3cf | 2013-07-07 17:22:41 +0200 | [diff] [blame] | 2730 | array = PyMem_Malloc((argc + 1) * sizeof(char *)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2731 | if (array == NULL) { |
| 2732 | PyErr_NoMemory(); |
| 2733 | return NULL; |
| 2734 | } |
| 2735 | for (i = 0; i < argc; ++i) { |
| 2736 | char *data; |
| 2737 | item = PySequence_GetItem(self, i); |
Stefan Krah | fd24f9e | 2012-08-20 11:04:24 +0200 | [diff] [blame] | 2738 | if (item == NULL) { |
| 2739 | /* NULL terminate before freeing. */ |
| 2740 | array[i] = NULL; |
| 2741 | goto fail; |
| 2742 | } |
Serhiy Storchaka | d174d24 | 2017-06-23 19:39:27 +0300 | [diff] [blame] | 2743 | /* check for embedded null bytes */ |
| 2744 | if (PyBytes_AsStringAndSize(item, &data, NULL) < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2745 | /* NULL terminate before freeing. */ |
| 2746 | array[i] = NULL; |
| 2747 | goto fail; |
| 2748 | } |
Victor Stinner | 0e2d3cf | 2013-07-07 17:22:41 +0200 | [diff] [blame] | 2749 | size = PyBytes_GET_SIZE(item) + 1; |
| 2750 | array[i] = PyMem_Malloc(size); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2751 | if (!array[i]) { |
| 2752 | PyErr_NoMemory(); |
| 2753 | goto fail; |
| 2754 | } |
Victor Stinner | 0e2d3cf | 2013-07-07 17:22:41 +0200 | [diff] [blame] | 2755 | memcpy(array[i], data, size); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2756 | Py_DECREF(item); |
| 2757 | } |
| 2758 | array[argc] = NULL; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2759 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2760 | return array; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2761 | |
| 2762 | fail: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2763 | Py_XDECREF(item); |
| 2764 | _Py_FreeCharPArray(array); |
| 2765 | return NULL; |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2766 | } |
| 2767 | |
| 2768 | |
| 2769 | /* Free's a NULL terminated char** array of C strings. */ |
| 2770 | void |
| 2771 | _Py_FreeCharPArray(char *const array[]) |
| 2772 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2773 | Py_ssize_t i; |
| 2774 | for (i = 0; array[i] != NULL; ++i) { |
Victor Stinner | 0e2d3cf | 2013-07-07 17:22:41 +0200 | [diff] [blame] | 2775 | PyMem_Free(array[i]); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2776 | } |
Victor Stinner | 0e2d3cf | 2013-07-07 17:22:41 +0200 | [diff] [blame] | 2777 | PyMem_Free((void*)array); |
Gregory P. Smith | fb94c5f | 2010-03-14 06:49:55 +0000 | [diff] [blame] | 2778 | } |