Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 6610ad9 | 1995-01-04 19:07:38 +0000 | [diff] [blame] | 2 | Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 3 | The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 9 | provided that the above copyright notice appear in all copies and that |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 10 | both that copyright notice and this permission notice appear in |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 11 | supporting documentation, and that the names of Stichting Mathematisch |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 12 | Centrum or CWI or Corporation for National Research Initiatives or |
| 13 | CNRI not be used in advertising or publicity pertaining to |
| 14 | distribution of the software without specific, written prior |
| 15 | permission. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 17 | While CWI is the initial source for this software, a modified version |
| 18 | is made available by the Corporation for National Research Initiatives |
| 19 | (CNRI) at the Internet address ftp://ftp.python.org. |
| 20 | |
| 21 | STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| 22 | REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| 24 | CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| 25 | DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 26 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 27 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 28 | PERFORMANCE OF THIS SOFTWARE. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 29 | |
| 30 | ******************************************************************/ |
| 31 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 32 | /* Class object implementation */ |
| 33 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 34 | #include "Python.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 35 | #include "structmember.h" |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 36 | |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 37 | /* Forward */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 38 | static PyObject *class_lookup |
| 39 | Py_PROTO((PyClassObject *, PyObject *, PyClassObject **)); |
| 40 | static PyObject *instance_getattr1 Py_PROTO((PyInstanceObject *, PyObject *)); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 41 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 42 | PyObject * |
| 43 | PyClass_New(bases, dict, name) |
| 44 | PyObject *bases; /* NULL or tuple of classobjects! */ |
| 45 | PyObject *dict; |
| 46 | PyObject *name; /* String; NULL if unknown */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 47 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 48 | PyClassObject *op, *dummy; |
| 49 | static PyObject *getattrstr, *setattrstr, *delattrstr; |
| 50 | static PyObject *docstr; |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 51 | if (docstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 52 | docstr= PyString_InternFromString("__doc__"); |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 53 | if (docstr == NULL) |
| 54 | return NULL; |
| 55 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 56 | if (PyDict_GetItem(dict, docstr) == NULL) { |
| 57 | if (PyDict_SetItem(dict, docstr, Py_None) < 0) |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 58 | return NULL; |
| 59 | } |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 60 | if (bases == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 61 | bases = PyTuple_New(0); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 62 | if (bases == NULL) |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 63 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 64 | } |
| 65 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 66 | Py_INCREF(bases); |
| 67 | op = PyObject_NEW(PyClassObject, &PyClass_Type); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 68 | if (op == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 69 | Py_DECREF(bases); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 70 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 71 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 72 | op->cl_bases = bases; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 73 | Py_INCREF(dict); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 74 | op->cl_dict = dict; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 75 | Py_XINCREF(name); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 76 | op->cl_name = name; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 77 | if (getattrstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 78 | getattrstr = PyString_InternFromString("__getattr__"); |
| 79 | setattrstr = PyString_InternFromString("__setattr__"); |
| 80 | delattrstr = PyString_InternFromString("__delattr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 81 | } |
| 82 | op->cl_getattr = class_lookup(op, getattrstr, &dummy); |
| 83 | op->cl_setattr = class_lookup(op, setattrstr, &dummy); |
| 84 | op->cl_delattr = class_lookup(op, delattrstr, &dummy); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 85 | Py_XINCREF(op->cl_getattr); |
| 86 | Py_XINCREF(op->cl_setattr); |
| 87 | Py_XINCREF(op->cl_delattr); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 88 | return (PyObject *) op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | /* Class methods */ |
| 92 | |
| 93 | static void |
| 94 | class_dealloc(op) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 95 | PyClassObject *op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 96 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 97 | Py_DECREF(op->cl_bases); |
| 98 | Py_DECREF(op->cl_dict); |
| 99 | Py_XDECREF(op->cl_name); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 100 | free((ANY *)op); |
| 101 | } |
| 102 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 103 | static PyObject * |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 104 | class_lookup(cp, name, pclass) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 105 | PyClassObject *cp; |
| 106 | PyObject *name; |
| 107 | PyClassObject **pclass; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 108 | { |
| 109 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 110 | PyObject *value = PyDict_GetItem(cp->cl_dict, name); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 111 | if (value != NULL) { |
| 112 | *pclass = cp; |
| 113 | return value; |
| 114 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 115 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 116 | for (i = 0; i < n; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 117 | PyObject *v = class_lookup( |
| 118 | (PyClassObject *) |
| 119 | PyTuple_GetItem(cp->cl_bases, i), name, pclass); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 120 | if (v != NULL) |
| 121 | return v; |
| 122 | } |
| 123 | return NULL; |
| 124 | } |
| 125 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 126 | static PyObject * |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 127 | class_getattr(op, name) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 128 | register PyClassObject *op; |
| 129 | PyObject *name; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 130 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 131 | register PyObject *v; |
| 132 | register char *sname = PyString_AsString(name); |
| 133 | PyClassObject *class; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 134 | if (sname[0] == '_' && sname[1] == '_') { |
| 135 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 136 | if (PyEval_GetRestricted()) { |
| 137 | PyErr_SetString(PyExc_RuntimeError, |
| 138 | "class.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 139 | return NULL; |
| 140 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 141 | Py_INCREF(op->cl_dict); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 142 | return op->cl_dict; |
| 143 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 144 | if (strcmp(sname, "__bases__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 145 | Py_INCREF(op->cl_bases); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 146 | return op->cl_bases; |
| 147 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 148 | if (strcmp(sname, "__name__") == 0) { |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 149 | if (op->cl_name == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 150 | v = Py_None; |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 151 | else |
| 152 | v = op->cl_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 153 | Py_INCREF(v); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 154 | return v; |
| 155 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 156 | } |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 157 | v = class_lookup(op, name, &class); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 158 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 159 | PyErr_SetObject(PyExc_AttributeError, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 160 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 161 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 162 | Py_INCREF(v); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 163 | if (PyFunction_Check(v)) { |
| 164 | PyObject *w = PyMethod_New(v, (PyObject *)NULL, |
| 165 | (PyObject *)class); |
| 166 | Py_DECREF(v); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 167 | v = w; |
| 168 | } |
| 169 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 170 | } |
| 171 | |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 172 | static int |
| 173 | class_setattr(op, name, v) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 174 | PyClassObject *op; |
| 175 | PyObject *name; |
| 176 | PyObject *v; |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 177 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 178 | char *sname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 179 | if (PyEval_GetRestricted()) { |
| 180 | PyErr_SetString(PyExc_RuntimeError, |
Guido van Rossum | ac21f6a | 1995-08-04 04:05:31 +0000 | [diff] [blame] | 181 | "classes are read-only in restricted mode"); |
| 182 | return -1; |
| 183 | } |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 184 | sname = PyString_AsString(name); |
| 185 | if (sname[0] == '_' && sname[1] == '_') { |
| 186 | int n = PyString_Size(name); |
| 187 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
| 188 | if (strcmp(sname, "__dict__") == 0 || |
| 189 | strcmp(sname, "__bases__") == 0 || |
| 190 | strcmp(sname, "__name__") == 0 || |
| 191 | strcmp(sname, "__getattr__") == 0 || |
| 192 | strcmp(sname, "__setattr__") == 0 || |
| 193 | strcmp(sname, "__delattr__") == 0) |
| 194 | { |
| 195 | /* XXX In unrestricted mode, we should |
| 196 | XXX allow this -- with a type check */ |
| 197 | PyErr_SetString(PyExc_TypeError, |
| 198 | "read-only special attribute"); |
| 199 | return -1; |
| 200 | } |
| 201 | } |
| 202 | } |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 203 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 204 | int rv = PyDict_DelItem(op->cl_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 205 | if (rv < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 206 | PyErr_SetString(PyExc_AttributeError, |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 207 | "delete non-existing class attribute"); |
| 208 | return rv; |
| 209 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 210 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 211 | return PyDict_SetItem(op->cl_dict, name, v); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 212 | } |
| 213 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 214 | static PyObject * |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 215 | class_repr(op) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 216 | PyClassObject *op; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 217 | { |
| 218 | char buf[140]; |
| 219 | char *name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 220 | if (op->cl_name == NULL || !PyString_Check(op->cl_name)) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 221 | name = "?"; |
| 222 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 223 | name = PyString_AsString(op->cl_name); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 224 | sprintf(buf, "<class %.100s at %lx>", name, (long)op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 225 | return PyString_FromString(buf); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 226 | } |
| 227 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 228 | PyTypeObject PyClass_Type = { |
| 229 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 230 | 0, |
| 231 | "class", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 232 | sizeof(PyClassObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 233 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 234 | (destructor)class_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 235 | 0, /*tp_print*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 236 | 0, /*tp_getattr*/ |
| 237 | 0, /*tp_setattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 238 | 0, /*tp_compare*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 239 | (reprfunc)class_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 240 | 0, /*tp_as_number*/ |
| 241 | 0, /*tp_as_sequence*/ |
| 242 | 0, /*tp_as_mapping*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 243 | 0, /*tp_hash*/ |
| 244 | 0, /*tp_call*/ |
| 245 | 0, /*tp_str*/ |
| 246 | (getattrofunc)class_getattr, /*tp_getattro*/ |
| 247 | (setattrofunc)class_setattr, /*tp_setattro*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 248 | }; |
| 249 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 250 | int |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 251 | PyClass_IsSubclass(class, base) |
| 252 | PyObject *class; |
| 253 | PyObject *base; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 254 | { |
| 255 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 256 | PyClassObject *cp; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 257 | if (class == base) |
| 258 | return 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 259 | if (class == NULL || !PyClass_Check(class)) |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 260 | return 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 261 | cp = (PyClassObject *)class; |
| 262 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 263 | for (i = 0; i < n; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 264 | if (PyClass_IsSubclass(PyTuple_GetItem(cp->cl_bases, i), base)) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 265 | return 1; |
| 266 | } |
| 267 | return 0; |
| 268 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 269 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 270 | |
| 271 | /* Instance objects */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 272 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 273 | PyObject * |
| 274 | PyInstance_New(class, arg, kw) |
| 275 | PyObject *class; |
| 276 | PyObject *arg; |
| 277 | PyObject *kw; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 278 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 279 | register PyInstanceObject *inst; |
| 280 | PyObject *init; |
| 281 | static PyObject *initstr; |
| 282 | if (!PyClass_Check(class)) { |
| 283 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 284 | return NULL; |
| 285 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 286 | inst = PyObject_NEW(PyInstanceObject, &PyInstance_Type); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 287 | if (inst == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 288 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 289 | Py_INCREF(class); |
| 290 | inst->in_class = (PyClassObject *)class; |
| 291 | inst->in_dict = PyDict_New(); |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 292 | if (inst->in_dict == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 293 | Py_DECREF(inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 294 | return NULL; |
| 295 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 296 | if (initstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 297 | initstr = PyString_InternFromString("__init__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 298 | init = instance_getattr1(inst, initstr); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 299 | if (init == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 300 | PyErr_Clear(); |
| 301 | if ((arg != NULL && (!PyTuple_Check(arg) || |
| 302 | PyTuple_Size(arg) != 0)) |
| 303 | || (kw != NULL && (!PyDict_Check(kw) || |
| 304 | PyDict_Size(kw) != 0))) { |
| 305 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | a83f270 | 1995-07-26 18:07:32 +0000 | [diff] [blame] | 306 | "this constructor takes no arguments"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 307 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 308 | inst = NULL; |
| 309 | } |
| 310 | } |
| 311 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 312 | PyObject *res = PyEval_CallObjectWithKeywords(init, arg, kw); |
| 313 | Py_DECREF(init); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 314 | if (res == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 315 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 316 | inst = NULL; |
| 317 | } |
| 318 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 319 | if (res != Py_None) { |
| 320 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 321 | "__init__() should return None"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 322 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 323 | inst = NULL; |
| 324 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 325 | Py_DECREF(res); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 326 | } |
| 327 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 328 | return (PyObject *)inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 329 | } |
| 330 | |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 331 | /* Instance methods */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 332 | |
| 333 | static void |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 334 | instance_dealloc(inst) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 335 | register PyInstanceObject *inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 336 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 337 | PyObject *error_type, *error_value, *error_traceback; |
| 338 | PyObject *del; |
| 339 | static PyObject *delstr; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 340 | /* Call the __del__ method if it exists. First temporarily |
| 341 | revive the object and save the current exception, if any. */ |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 342 | #ifdef Py_TRACE_REFS |
| 343 | /* much too complicated if Py_TRACE_REFS defined */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 344 | extern long _Py_RefTotal; |
| 345 | inst->ob_type = &PyInstance_Type; |
| 346 | _Py_NewReference(inst); |
| 347 | _Py_RefTotal--; /* compensate for increment in NEWREF */ |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 348 | #ifdef COUNT_ALLOCS |
| 349 | inst->ob_type->tp_alloc--; /* ditto */ |
| 350 | #endif |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 351 | #else /* !Py_TRACE_REFS */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 352 | Py_INCREF(inst); |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 353 | #endif /* !Py_TRACE_REFS */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 354 | PyErr_Fetch(&error_type, &error_value, &error_traceback); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 355 | if (delstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 356 | delstr = PyString_InternFromString("__del__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 357 | if ((del = instance_getattr1(inst, delstr)) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 358 | PyObject *res = PyEval_CallObject(del, (PyObject *)NULL); |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 359 | if (res == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 360 | PyObject *f, *t, *v, *tb; |
| 361 | PyErr_Fetch(&t, &v, &tb); |
| 362 | f = PySys_GetObject("stderr"); |
Guido van Rossum | 22a85e5 | 1996-09-11 22:51:57 +0000 | [diff] [blame] | 363 | if (f != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 364 | PyFile_WriteString("Exception ", f); |
Guido van Rossum | cbd1e4e | 1996-12-05 21:52:32 +0000 | [diff] [blame] | 365 | if (t) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 366 | PyFile_WriteObject(t, f, Py_PRINT_RAW); |
| 367 | if (v && v != Py_None) { |
| 368 | PyFile_WriteString(": ", f); |
| 369 | PyFile_WriteObject(v, f, 0); |
Guido van Rossum | cbd1e4e | 1996-12-05 21:52:32 +0000 | [diff] [blame] | 370 | } |
| 371 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 372 | PyFile_WriteString(" in ", f); |
| 373 | PyFile_WriteObject(del, f, 0); |
| 374 | PyFile_WriteString(" ignored\n", f); |
| 375 | PyErr_Clear(); /* Just in case */ |
Guido van Rossum | 22a85e5 | 1996-09-11 22:51:57 +0000 | [diff] [blame] | 376 | } |
Guido van Rossum | cbd1e4e | 1996-12-05 21:52:32 +0000 | [diff] [blame] | 377 | Py_XDECREF(t); |
| 378 | Py_XDECREF(v); |
| 379 | Py_XDECREF(tb); |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 380 | } |
| 381 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 382 | Py_DECREF(res); |
| 383 | Py_DECREF(del); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 384 | } |
| 385 | /* Restore the saved exception and undo the temporary revival */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 386 | PyErr_Restore(error_type, error_value, error_traceback); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 387 | /* Can't use DECREF here, it would cause a recursive call */ |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 388 | if (--inst->ob_refcnt > 0) { |
| 389 | #ifdef COUNT_ALLOCS |
| 390 | inst->ob_type->tp_free--; |
| 391 | #endif |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 392 | return; /* __del__ added a reference; don't delete now */ |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 393 | } |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 394 | #ifdef Py_TRACE_REFS |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 395 | #ifdef COUNT_ALLOCS |
| 396 | inst->ob_type->tp_free--; /* compensate for increment in UNREF */ |
| 397 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 398 | _Py_ForgetReference(inst); |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 399 | inst->ob_type = NULL; |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 400 | #endif /* Py_TRACE_REFS */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 401 | Py_DECREF(inst->in_class); |
| 402 | Py_XDECREF(inst->in_dict); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 403 | free((ANY *)inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 404 | } |
| 405 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 406 | static PyObject * |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 407 | instance_getattr1(inst, name) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 408 | register PyInstanceObject *inst; |
| 409 | PyObject *name; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 410 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 411 | register PyObject *v; |
| 412 | register char *sname = PyString_AsString(name); |
| 413 | PyClassObject *class; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 414 | if (sname[0] == '_' && sname[1] == '_') { |
| 415 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 416 | if (PyEval_GetRestricted()) { |
| 417 | PyErr_SetString(PyExc_RuntimeError, |
| 418 | "instance.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 419 | return NULL; |
| 420 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 421 | Py_INCREF(inst->in_dict); |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 422 | return inst->in_dict; |
| 423 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 424 | if (strcmp(sname, "__class__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 425 | Py_INCREF(inst->in_class); |
| 426 | return (PyObject *)inst->in_class; |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 427 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 428 | } |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 429 | class = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 430 | v = PyDict_GetItem(inst->in_dict, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 431 | if (v == NULL) { |
| 432 | v = class_lookup(inst->in_class, name, &class); |
| 433 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 434 | PyErr_SetObject(PyExc_AttributeError, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 435 | return NULL; |
| 436 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 437 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 438 | Py_INCREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 439 | if (class != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 440 | if (PyFunction_Check(v)) { |
| 441 | PyObject *w = PyMethod_New(v, (PyObject *)inst, |
| 442 | (PyObject *)class); |
| 443 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 444 | v = w; |
| 445 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 446 | else if (PyMethod_Check(v)) { |
| 447 | PyObject *im_class = PyMethod_Class(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 448 | /* Only if classes are compatible */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 449 | if (PyClass_IsSubclass((PyObject *)class, im_class)) { |
| 450 | PyObject *im_func = PyMethod_Function(v); |
| 451 | PyObject *w = PyMethod_New(im_func, |
| 452 | (PyObject *)inst, im_class); |
| 453 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 454 | v = w; |
| 455 | } |
| 456 | } |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 457 | } |
| 458 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 459 | } |
| 460 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 461 | static PyObject * |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 462 | instance_getattr(inst, name) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 463 | register PyInstanceObject *inst; |
| 464 | PyObject *name; |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 465 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 466 | register PyObject *func, *res; |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 467 | res = instance_getattr1(inst, name); |
| 468 | if (res == NULL && (func = inst->in_class->cl_getattr) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 469 | PyObject *args; |
| 470 | PyErr_Clear(); |
| 471 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 472 | if (args == NULL) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 473 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 474 | res = PyEval_CallObject(func, args); |
| 475 | Py_DECREF(args); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 476 | } |
| 477 | return res; |
| 478 | } |
| 479 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 480 | static int |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 481 | instance_setattr1(inst, name, v) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 482 | PyInstanceObject *inst; |
| 483 | PyObject *name; |
| 484 | PyObject *v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 485 | { |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 486 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 487 | int rv = PyDict_DelItem(inst->in_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 488 | if (rv < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 489 | PyErr_SetString(PyExc_AttributeError, |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 490 | "delete non-existing instance attribute"); |
| 491 | return rv; |
| 492 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 493 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 494 | return PyDict_SetItem(inst->in_dict, name, v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 495 | } |
| 496 | |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 497 | static int |
| 498 | instance_setattr(inst, name, v) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 499 | PyInstanceObject *inst; |
| 500 | PyObject *name; |
| 501 | PyObject *v; |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 502 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 503 | PyObject *func, *args, *res, *tmp; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 504 | char *sname = PyString_AsString(name); |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 505 | if (sname[0] == '_' && sname[1] == '_') { |
| 506 | int n = PyString_Size(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 507 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 508 | if (strcmp(sname, "__dict__") == 0) { |
| 509 | if (PyEval_GetRestricted()) { |
| 510 | PyErr_SetString(PyExc_RuntimeError, |
| 511 | "__dict__ not accessible in restricted mode"); |
| 512 | return -1; |
| 513 | } |
| 514 | if (v == NULL || !PyDict_Check(v)) { |
| 515 | PyErr_SetString(PyExc_TypeError, |
| 516 | "__dict__ must be set to a dictionary"); |
| 517 | return -1; |
| 518 | } |
| 519 | tmp = inst->in_dict; |
| 520 | Py_INCREF(v); |
| 521 | inst->in_dict = v; |
| 522 | Py_DECREF(tmp); |
| 523 | return 0; |
| 524 | } |
| 525 | if (strcmp(sname, "__class__") == 0) { |
| 526 | if (PyEval_GetRestricted()) { |
| 527 | PyErr_SetString(PyExc_RuntimeError, |
| 528 | "__class__ not accessible in restricted mode"); |
| 529 | return -1; |
| 530 | } |
| 531 | if (v == NULL || !PyClass_Check(v)) { |
| 532 | PyErr_SetString(PyExc_TypeError, |
| 533 | "__class__ must be set to a class"); |
| 534 | return -1; |
| 535 | } |
| 536 | tmp = (PyObject *)(inst->in_class); |
| 537 | Py_INCREF(v); |
| 538 | inst->in_class = (PyClassObject *)v; |
| 539 | Py_DECREF(tmp); |
| 540 | return 0; |
| 541 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 542 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 543 | } |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 544 | if (v == NULL) |
| 545 | func = inst->in_class->cl_delattr; |
| 546 | else |
| 547 | func = inst->in_class->cl_setattr; |
| 548 | if (func == NULL) |
| 549 | return instance_setattr1(inst, name, v); |
| 550 | if (v == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 551 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 552 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 553 | args = Py_BuildValue("(OOO)", inst, name, v); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 554 | if (args == NULL) |
| 555 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 556 | res = PyEval_CallObject(func, args); |
| 557 | Py_DECREF(args); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 558 | if (res == NULL) |
| 559 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 560 | Py_DECREF(res); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 561 | return 0; |
| 562 | } |
| 563 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 564 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 565 | instance_repr(inst) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 566 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 567 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 568 | PyObject *func; |
| 569 | PyObject *res; |
| 570 | static PyObject *reprstr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 571 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 572 | if (reprstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 573 | reprstr = PyString_InternFromString("__repr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 574 | func = instance_getattr(inst, reprstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 575 | if (func == NULL) { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 576 | char buf[140]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 577 | PyObject *classname = inst->in_class->cl_name; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 578 | char *cname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 579 | if (classname != NULL && PyString_Check(classname)) |
| 580 | cname = PyString_AsString(classname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 581 | else |
| 582 | cname = "?"; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 583 | PyErr_Clear(); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 584 | sprintf(buf, "<%.100s instance at %lx>", cname, (long)inst); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 585 | return PyString_FromString(buf); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 586 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 587 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 588 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 589 | return res; |
| 590 | } |
| 591 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 592 | static PyObject * |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 593 | instance_compare1(inst, other) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 594 | PyObject *inst, *other; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 595 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 596 | return PyInstance_DoBinOp(inst, other, "__cmp__", "__rcmp__", |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 597 | instance_compare1); |
| 598 | } |
| 599 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 600 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 601 | instance_compare(inst, other) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 602 | PyObject *inst, *other; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 603 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 604 | PyObject *result; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 605 | long outcome; |
| 606 | result = instance_compare1(inst, other); |
Guido van Rossum | c8b6df9 | 1997-05-23 00:06:51 +0000 | [diff] [blame] | 607 | if (result == NULL) |
| 608 | return -1; |
| 609 | if (!PyInt_Check(result)) { |
| 610 | Py_DECREF(result); |
| 611 | PyErr_SetString(PyExc_TypeError, |
| 612 | "comparison did not return an int"); |
| 613 | return -1; |
Sjoerd Mullender | b9a6d12 | 1994-10-19 15:11:52 +0000 | [diff] [blame] | 614 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 615 | outcome = PyInt_AsLong(result); |
| 616 | Py_DECREF(result); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 617 | if (outcome < 0) |
| 618 | return -1; |
| 619 | else if (outcome > 0) |
| 620 | return 1; |
| 621 | return 0; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 622 | } |
| 623 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 624 | static long |
| 625 | instance_hash(inst) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 626 | PyInstanceObject *inst; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 627 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 628 | PyObject *func; |
| 629 | PyObject *res; |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 630 | long outcome; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 631 | static PyObject *hashstr, *cmpstr; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 632 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 633 | if (hashstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 634 | hashstr = PyString_InternFromString("__hash__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 635 | func = instance_getattr(inst, hashstr); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 636 | if (func == NULL) { |
| 637 | /* If there is no __cmp__ method, we hash on the address. |
| 638 | If a __cmp__ method exists, there must be a __hash__. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 639 | PyErr_Clear(); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 640 | if (cmpstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 641 | cmpstr = PyString_InternFromString("__cmp__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 642 | func = instance_getattr(inst, cmpstr); |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 643 | if (func == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 644 | PyErr_Clear(); |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 645 | outcome = (long)inst; |
| 646 | if (outcome == -1) |
| 647 | outcome = -2; |
| 648 | return outcome; |
| 649 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 650 | PyErr_SetString(PyExc_TypeError, "unhashable instance"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 651 | return -1; |
| 652 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 653 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 654 | Py_DECREF(func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 655 | if (res == NULL) |
| 656 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 657 | if (PyInt_Check(res)) { |
| 658 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 659 | if (outcome == -1) |
| 660 | outcome = -2; |
| 661 | } |
| 662 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 663 | PyErr_SetString(PyExc_TypeError, |
| 664 | "__hash__() should return an int"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 665 | outcome = -1; |
| 666 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 667 | Py_DECREF(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 668 | return outcome; |
| 669 | } |
| 670 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 671 | static PyObject *getitemstr, *setitemstr, *delitemstr, *lenstr; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 672 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 673 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 674 | instance_length(inst) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 675 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 676 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 677 | PyObject *func; |
| 678 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 679 | int outcome; |
| 680 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 681 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 682 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 683 | func = instance_getattr(inst, lenstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 684 | if (func == NULL) |
| 685 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 686 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 687 | Py_DECREF(func); |
Guido van Rossum | d014ea6 | 1992-11-26 10:30:26 +0000 | [diff] [blame] | 688 | if (res == NULL) |
| 689 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 690 | if (PyInt_Check(res)) { |
| 691 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 692 | if (outcome < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 693 | PyErr_SetString(PyExc_ValueError, |
| 694 | "__len__() should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 695 | } |
| 696 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 697 | PyErr_SetString(PyExc_TypeError, |
| 698 | "__len__() should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 699 | outcome = -1; |
| 700 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 701 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 702 | return outcome; |
| 703 | } |
| 704 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 705 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 706 | instance_subscript(inst, key) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 707 | PyInstanceObject *inst; |
| 708 | PyObject *key; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 709 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 710 | PyObject *func; |
| 711 | PyObject *arg; |
| 712 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 713 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 714 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 715 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 716 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 717 | if (func == NULL) |
| 718 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 719 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 720 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 721 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 722 | return NULL; |
| 723 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 724 | res = PyEval_CallObject(func, arg); |
| 725 | Py_DECREF(func); |
| 726 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 727 | return res; |
| 728 | } |
| 729 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 730 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 731 | instance_ass_subscript(inst, key, value) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 732 | PyInstanceObject*inst; |
| 733 | PyObject *key; |
| 734 | PyObject *value; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 735 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 736 | PyObject *func; |
| 737 | PyObject *arg; |
| 738 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 739 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 740 | if (value == NULL) { |
| 741 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 742 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 743 | func = instance_getattr(inst, delitemstr); |
| 744 | } |
| 745 | else { |
| 746 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 747 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 748 | func = instance_getattr(inst, setitemstr); |
| 749 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 750 | if (func == NULL) |
| 751 | return -1; |
| 752 | if (value == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 753 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 754 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 755 | arg = Py_BuildValue("(OO)", key, value); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 756 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 757 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 758 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 759 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 760 | res = PyEval_CallObject(func, arg); |
| 761 | Py_DECREF(func); |
| 762 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 763 | if (res == NULL) |
| 764 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 765 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 766 | return 0; |
| 767 | } |
| 768 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 769 | static PyMappingMethods instance_as_mapping = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 770 | (inquiry)instance_length, /*mp_length*/ |
| 771 | (binaryfunc)instance_subscript, /*mp_subscript*/ |
| 772 | (objobjargproc)instance_ass_subscript, /*mp_ass_subscript*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 773 | }; |
| 774 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 775 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 776 | instance_item(inst, i) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 777 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 778 | int i; |
| 779 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 780 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 781 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 782 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 783 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 784 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 785 | if (func == NULL) |
| 786 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 787 | arg = Py_BuildValue("(i)", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 788 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 789 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 790 | return NULL; |
| 791 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 792 | res = PyEval_CallObject(func, arg); |
| 793 | Py_DECREF(func); |
| 794 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 795 | return res; |
| 796 | } |
| 797 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 798 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 799 | instance_slice(inst, i, j) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 800 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 801 | int i, j; |
| 802 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 803 | PyObject *func, *arg, *res; |
| 804 | static PyObject *getslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 805 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 806 | if (getslicestr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 807 | getslicestr = PyString_InternFromString("__getslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 808 | func = instance_getattr(inst, getslicestr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 809 | if (func == NULL) |
| 810 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 811 | arg = Py_BuildValue("(ii)", i, j); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 812 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 813 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 814 | return NULL; |
| 815 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 816 | res = PyEval_CallObject(func, arg); |
| 817 | Py_DECREF(func); |
| 818 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 819 | return res; |
| 820 | } |
| 821 | |
| 822 | static int |
| 823 | instance_ass_item(inst, i, item) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 824 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 825 | int i; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 826 | PyObject *item; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 827 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 828 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 829 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 830 | if (item == NULL) { |
| 831 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 832 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 833 | func = instance_getattr(inst, delitemstr); |
| 834 | } |
| 835 | else { |
| 836 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 837 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 838 | func = instance_getattr(inst, setitemstr); |
| 839 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 840 | if (func == NULL) |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 841 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 842 | if (item == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 843 | arg = Py_BuildValue("i", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 844 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 845 | arg = Py_BuildValue("(iO)", i, item); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 846 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 847 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 848 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 849 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 850 | res = PyEval_CallObject(func, arg); |
| 851 | Py_DECREF(func); |
| 852 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 853 | if (res == NULL) |
| 854 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 855 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 856 | return 0; |
| 857 | } |
| 858 | |
| 859 | static int |
| 860 | instance_ass_slice(inst, i, j, value) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 861 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 862 | int i, j; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 863 | PyObject *value; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 864 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 865 | PyObject *func, *arg, *res; |
| 866 | static PyObject *setslicestr, *delslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 867 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 868 | if (value == NULL) { |
| 869 | if (delslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 870 | delslicestr = |
| 871 | PyString_InternFromString("__delslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 872 | func = instance_getattr(inst, delslicestr); |
| 873 | } |
| 874 | else { |
| 875 | if (setslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 876 | setslicestr = |
| 877 | PyString_InternFromString("__setslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 878 | func = instance_getattr(inst, setslicestr); |
| 879 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 880 | if (func == NULL) |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 881 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 882 | if (value == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 883 | arg = Py_BuildValue("(ii)", i, j); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 884 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 885 | arg = Py_BuildValue("(iiO)", i, j, value); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 886 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 887 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 888 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 889 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 890 | res = PyEval_CallObject(func, arg); |
| 891 | Py_DECREF(func); |
| 892 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 893 | if (res == NULL) |
| 894 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 895 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 896 | return 0; |
| 897 | } |
| 898 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 899 | static PySequenceMethods instance_as_sequence = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 900 | (inquiry)instance_length, /*sq_length*/ |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 901 | 0, /*sq_concat*/ |
| 902 | 0, /*sq_repeat*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 903 | (intargfunc)instance_item, /*sq_item*/ |
| 904 | (intintargfunc)instance_slice, /*sq_slice*/ |
| 905 | (intobjargproc)instance_ass_item, /*sq_ass_item*/ |
| 906 | (intintobjargproc)instance_ass_slice, /*sq_ass_slice*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 907 | }; |
| 908 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 909 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 910 | generic_unary_op(self, methodname) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 911 | PyInstanceObject *self; |
| 912 | PyObject *methodname; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 913 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 914 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 915 | |
| 916 | if ((func = instance_getattr(self, methodname)) == NULL) |
| 917 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 918 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 919 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 920 | return res; |
| 921 | } |
| 922 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 923 | |
| 924 | /* Forward */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 925 | static int halfbinop Py_PROTO((PyObject *, PyObject *, char *, PyObject **, |
| 926 | PyObject * (*) Py_PROTO((PyObject *, PyObject *)), int )); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 927 | |
| 928 | |
| 929 | /* Implement a binary operator involving at least one class instance. */ |
| 930 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 931 | PyObject * |
| 932 | PyInstance_DoBinOp(v, w, opname, ropname, thisfunc) |
| 933 | PyObject *v; |
| 934 | PyObject *w; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 935 | char *opname; |
| 936 | char *ropname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 937 | PyObject * (*thisfunc) Py_PROTO((PyObject *, PyObject *)); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 938 | { |
| 939 | char buf[256]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 940 | PyObject *result = NULL; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 941 | if (halfbinop(v, w, opname, &result, thisfunc, 0) <= 0) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 942 | return result; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 943 | if (halfbinop(w, v, ropname, &result, thisfunc, 1) <= 0) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 944 | return result; |
Guido van Rossum | c8b6df9 | 1997-05-23 00:06:51 +0000 | [diff] [blame] | 945 | /* Sigh -- special case for comnparisons */ |
| 946 | if (strcmp(opname, "__cmp__") == 0) { |
| 947 | long c = (v < w) ? -1 : (v > w) ? 1 : 0; |
| 948 | return PyInt_FromLong(c); |
| 949 | } |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 950 | sprintf(buf, "%s nor %s defined for these operands", opname, ropname); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 951 | PyErr_SetString(PyExc_TypeError, buf); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 952 | return NULL; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 953 | } |
| 954 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 955 | |
| 956 | /* Try one half of a binary operator involving a class instance. |
| 957 | Return value: |
| 958 | -1 if an exception is to be reported right away |
| 959 | 0 if we have a valid result |
| 960 | 1 if we could try another operation |
| 961 | */ |
| 962 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 963 | static PyObject *coerce_obj; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 964 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 965 | static int |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 966 | halfbinop(v, w, opname, r_result, thisfunc, swapped) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 967 | PyObject *v; |
| 968 | PyObject *w; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 969 | char *opname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 970 | PyObject **r_result; |
| 971 | PyObject * (*thisfunc) Py_PROTO((PyObject *, PyObject *)); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 972 | int swapped; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 973 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 974 | PyObject *func; |
| 975 | PyObject *args; |
| 976 | PyObject *PyNumber_Coerce; |
| 977 | PyObject *coerced = NULL; |
| 978 | PyObject *v1; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 979 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 980 | if (!PyInstance_Check(v)) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 981 | return 1; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 982 | if (coerce_obj == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 983 | coerce_obj = PyString_InternFromString("__coerce__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 984 | if (coerce_obj == NULL) |
| 985 | return -1; |
| 986 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 987 | PyNumber_Coerce = PyObject_GetAttr(v, coerce_obj); |
| 988 | if (PyNumber_Coerce == NULL) { |
| 989 | PyErr_Clear(); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 990 | } |
| 991 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 992 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 993 | if (args == NULL) { |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 994 | return -1; |
| 995 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 996 | coerced = PyEval_CallObject(PyNumber_Coerce, args); |
| 997 | Py_DECREF(args); |
| 998 | Py_DECREF(PyNumber_Coerce); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 999 | if (coerced == NULL) { |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1000 | return -1; |
| 1001 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1002 | if (coerced == Py_None) { |
| 1003 | Py_DECREF(coerced); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1004 | return 1; |
| 1005 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1006 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
| 1007 | Py_DECREF(coerced); |
| 1008 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1009 | "coercion should return None or 2-tuple"); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1010 | return -1; |
| 1011 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1012 | v1 = PyTuple_GetItem(coerced, 0); |
| 1013 | w = PyTuple_GetItem(coerced, 1); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1014 | if (v1 != v) { |
| 1015 | v = v1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1016 | if (!PyInstance_Check(v) && !PyInstance_Check(w)) { |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1017 | if (swapped) |
| 1018 | *r_result = (*thisfunc)(w, v); |
| 1019 | else |
| 1020 | *r_result = (*thisfunc)(v, w); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1021 | Py_DECREF(coerced); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1022 | return *r_result == NULL ? -1 : 0; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1023 | } |
| 1024 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1025 | w = PyTuple_GetItem(coerced, 1); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1026 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1027 | func = PyObject_GetAttrString(v, opname); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1028 | if (func == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1029 | Py_XDECREF(coerced); |
| 1030 | if (PyErr_Occurred() != PyExc_AttributeError) |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1031 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1032 | PyErr_Clear(); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1033 | return 1; |
| 1034 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1035 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1036 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1037 | Py_DECREF(func); |
| 1038 | Py_XDECREF(coerced); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1039 | return -1; |
| 1040 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1041 | *r_result = PyEval_CallObject(func, args); |
| 1042 | Py_DECREF(args); |
| 1043 | Py_DECREF(func); |
| 1044 | Py_XDECREF(coerced); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1045 | return *r_result == NULL ? -1 : 0; |
| 1046 | } |
| 1047 | |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1048 | static int |
| 1049 | instance_coerce(pv, pw) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1050 | PyObject **pv; |
| 1051 | PyObject **pw; |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1052 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1053 | PyObject *v = *pv; |
| 1054 | PyObject *w = *pw; |
| 1055 | PyObject *PyNumber_Coerce; |
| 1056 | PyObject *args; |
| 1057 | PyObject *coerced; |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1058 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1059 | if (coerce_obj == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1060 | coerce_obj = PyString_InternFromString("__coerce__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1061 | if (coerce_obj == NULL) |
| 1062 | return -1; |
| 1063 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1064 | PyNumber_Coerce = PyObject_GetAttr(v, coerce_obj); |
| 1065 | if (PyNumber_Coerce == NULL) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1066 | /* No __coerce__ method: always OK */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1067 | PyErr_Clear(); |
| 1068 | Py_INCREF(v); |
| 1069 | Py_INCREF(w); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1070 | return 0; |
| 1071 | } |
| 1072 | /* Has __coerce__ method: call it */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1073 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1074 | if (args == NULL) { |
| 1075 | return -1; |
| 1076 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1077 | coerced = PyEval_CallObject(PyNumber_Coerce, args); |
| 1078 | Py_DECREF(args); |
| 1079 | Py_DECREF(PyNumber_Coerce); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1080 | if (coerced == NULL) { |
| 1081 | /* __coerce__ call raised an exception */ |
| 1082 | return -1; |
| 1083 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1084 | if (coerced == Py_None) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1085 | /* __coerce__ says "I can't do it" */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1086 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1087 | return 1; |
| 1088 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1089 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1090 | /* __coerce__ return value is malformed */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1091 | Py_DECREF(coerced); |
| 1092 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1093 | "coercion should return None or 2-tuple"); |
| 1094 | return -1; |
| 1095 | } |
| 1096 | /* __coerce__ returned two new values */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1097 | *pv = PyTuple_GetItem(coerced, 0); |
| 1098 | *pw = PyTuple_GetItem(coerced, 1); |
| 1099 | Py_INCREF(*pv); |
| 1100 | Py_INCREF(*pw); |
| 1101 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1102 | return 0; |
| 1103 | } |
| 1104 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1105 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1106 | #define UNARY(funcname, methodname) \ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1107 | static PyObject *funcname(self) PyInstanceObject *self; { \ |
| 1108 | static PyObject *o; \ |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1109 | if (o == NULL) o = PyString_InternFromString(methodname); \ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1110 | return generic_unary_op(self, o); \ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1111 | } |
| 1112 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1113 | UNARY(instance_neg, "__neg__") |
| 1114 | UNARY(instance_pos, "__pos__") |
| 1115 | UNARY(instance_abs, "__abs__") |
| 1116 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1117 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1118 | instance_nonzero(self) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1119 | PyInstanceObject *self; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1120 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1121 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1122 | long outcome; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1123 | static PyObject *nonzerostr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1124 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1125 | if (nonzerostr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1126 | nonzerostr = PyString_InternFromString("__nonzero__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1127 | if ((func = instance_getattr(self, nonzerostr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1128 | PyErr_Clear(); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1129 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1130 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1131 | if ((func = instance_getattr(self, lenstr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1132 | PyErr_Clear(); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1133 | /* Fall back to the default behavior: |
| 1134 | all instances are nonzero */ |
| 1135 | return 1; |
| 1136 | } |
| 1137 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1138 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1139 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1140 | if (res == NULL) |
| 1141 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1142 | if (!PyInt_Check(res)) { |
| 1143 | Py_DECREF(res); |
| 1144 | PyErr_SetString(PyExc_TypeError, |
| 1145 | "__nonzero__ should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1146 | return -1; |
| 1147 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1148 | outcome = PyInt_AsLong(res); |
| 1149 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1150 | if (outcome < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1151 | PyErr_SetString(PyExc_ValueError, |
| 1152 | "__nonzero__ should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1153 | return -1; |
| 1154 | } |
| 1155 | return outcome > 0; |
| 1156 | } |
| 1157 | |
| 1158 | UNARY(instance_invert, "__invert__") |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 1159 | UNARY(instance_int, "__int__") |
| 1160 | UNARY(instance_long, "__long__") |
| 1161 | UNARY(instance_float, "__float__") |
| 1162 | UNARY(instance_oct, "__oct__") |
| 1163 | UNARY(instance_hex, "__hex__") |
| 1164 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1165 | /* This version is for ternary calls only (z != None) */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1166 | static PyObject * |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1167 | instance_pow(v, w, z) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1168 | PyObject *v; |
| 1169 | PyObject *w; |
| 1170 | PyObject *z; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1171 | { |
| 1172 | /* XXX Doesn't do coercions... */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1173 | PyObject *func; |
| 1174 | PyObject *args; |
| 1175 | PyObject *result; |
| 1176 | static PyObject *powstr; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1177 | |
| 1178 | if (powstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1179 | powstr = PyString_InternFromString("__pow__"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1180 | func = PyObject_GetAttr(v, powstr); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1181 | if (func == NULL) |
| 1182 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1183 | args = Py_BuildValue("(OO)", w, z); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1184 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1185 | Py_DECREF(func); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1186 | return NULL; |
| 1187 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1188 | result = PyEval_CallObject(func, args); |
| 1189 | Py_DECREF(func); |
| 1190 | Py_DECREF(args); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1191 | return result; |
| 1192 | } |
| 1193 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1194 | static PyNumberMethods instance_as_number = { |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1195 | 0, /*nb_add*/ |
| 1196 | 0, /*nb_subtract*/ |
| 1197 | 0, /*nb_multiply*/ |
| 1198 | 0, /*nb_divide*/ |
| 1199 | 0, /*nb_remainder*/ |
| 1200 | 0, /*nb_divmod*/ |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 1201 | (ternaryfunc)instance_pow, /*nb_power*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1202 | (unaryfunc)instance_neg, /*nb_negative*/ |
| 1203 | (unaryfunc)instance_pos, /*nb_positive*/ |
| 1204 | (unaryfunc)instance_abs, /*nb_absolute*/ |
| 1205 | (inquiry)instance_nonzero, /*nb_nonzero*/ |
| 1206 | (unaryfunc)instance_invert, /*nb_invert*/ |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1207 | 0, /*nb_lshift*/ |
| 1208 | 0, /*nb_rshift*/ |
| 1209 | 0, /*nb_and*/ |
| 1210 | 0, /*nb_xor*/ |
| 1211 | 0, /*nb_or*/ |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1212 | (coercion)instance_coerce, /*nb_coerce*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1213 | (unaryfunc)instance_int, /*nb_int*/ |
| 1214 | (unaryfunc)instance_long, /*nb_long*/ |
| 1215 | (unaryfunc)instance_float, /*nb_float*/ |
| 1216 | (unaryfunc)instance_oct, /*nb_oct*/ |
| 1217 | (unaryfunc)instance_hex, /*nb_hex*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1218 | }; |
| 1219 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1220 | PyTypeObject PyInstance_Type = { |
| 1221 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1222 | 0, |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 1223 | "instance", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1224 | sizeof(PyInstanceObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1225 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1226 | (destructor)instance_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 7066dd7 | 1992-09-17 17:54:56 +0000 | [diff] [blame] | 1227 | 0, /*tp_print*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1228 | 0, /*tp_getattr*/ |
| 1229 | 0, /*tp_setattr*/ |
| 1230 | instance_compare, /*tp_compare*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1231 | (reprfunc)instance_repr, /*tp_repr*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1232 | &instance_as_number, /*tp_as_number*/ |
| 1233 | &instance_as_sequence, /*tp_as_sequence*/ |
| 1234 | &instance_as_mapping, /*tp_as_mapping*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1235 | (hashfunc)instance_hash, /*tp_hash*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1236 | 0, /*tp_call*/ |
| 1237 | 0, /*tp_str*/ |
| 1238 | (getattrofunc)instance_getattr, /*tp_getattro*/ |
| 1239 | (setattrofunc)instance_setattr, /*tp_setattro*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1240 | }; |
| 1241 | |
| 1242 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1243 | /* Instance method objects are used for two purposes: |
| 1244 | (a) as bound instance methods (returned by instancename.methodname) |
| 1245 | (b) as unbound methods (returned by ClassName.methodname) |
| 1246 | In case (b), im_self is NULL |
| 1247 | */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1248 | |
| 1249 | typedef struct { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1250 | PyObject_HEAD |
| 1251 | PyObject *im_func; /* The function implementing the method */ |
| 1252 | PyObject *im_self; /* The instance it is bound to, or NULL */ |
| 1253 | PyObject *im_class; /* The class that defined the method */ |
| 1254 | } PyMethodObject; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1255 | |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1256 | |
| 1257 | static PyMethodObject *free_list; |
| 1258 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1259 | PyObject * |
| 1260 | PyMethod_New(func, self, class) |
| 1261 | PyObject *func; |
| 1262 | PyObject *self; |
| 1263 | PyObject *class; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1264 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1265 | register PyMethodObject *im; |
| 1266 | if (!PyFunction_Check(func)) { |
| 1267 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1268 | return NULL; |
| 1269 | } |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1270 | im = free_list; |
| 1271 | if (im != NULL) { |
| 1272 | free_list = (PyMethodObject *)(im->im_self); |
| 1273 | im->ob_type = &PyMethod_Type; |
| 1274 | _Py_NewReference(im); |
| 1275 | } |
| 1276 | else { |
| 1277 | im = PyObject_NEW(PyMethodObject, &PyMethod_Type); |
| 1278 | if (im == NULL) |
| 1279 | return NULL; |
| 1280 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1281 | Py_INCREF(func); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1282 | im->im_func = func; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1283 | Py_XINCREF(self); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1284 | im->im_self = self; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1285 | Py_INCREF(class); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1286 | im->im_class = class; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1287 | return (PyObject *)im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1288 | } |
| 1289 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1290 | PyObject * |
| 1291 | PyMethod_Function(im) |
| 1292 | register PyObject *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1293 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1294 | if (!PyMethod_Check(im)) { |
| 1295 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1296 | return NULL; |
| 1297 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1298 | return ((PyMethodObject *)im)->im_func; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1299 | } |
| 1300 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1301 | PyObject * |
| 1302 | PyMethod_Self(im) |
| 1303 | register PyObject *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1304 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1305 | if (!PyMethod_Check(im)) { |
| 1306 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1307 | return NULL; |
| 1308 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1309 | return ((PyMethodObject *)im)->im_self; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1310 | } |
| 1311 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1312 | PyObject * |
| 1313 | PyMethod_Class(im) |
| 1314 | register PyObject *im; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1315 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1316 | if (!PyMethod_Check(im)) { |
| 1317 | PyErr_BadInternalCall(); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1318 | return NULL; |
| 1319 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1320 | return ((PyMethodObject *)im)->im_class; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1321 | } |
| 1322 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1323 | /* Class method methods */ |
| 1324 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1325 | #define OFF(x) offsetof(PyMethodObject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1326 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1327 | static struct memberlist instancemethod_memberlist[] = { |
| 1328 | {"im_func", T_OBJECT, OFF(im_func)}, |
| 1329 | {"im_self", T_OBJECT, OFF(im_self)}, |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1330 | {"im_class", T_OBJECT, OFF(im_class)}, |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1331 | /* Dummies that are not handled by getattr() except for __members__ */ |
| 1332 | {"__doc__", T_INT, 0}, |
| 1333 | {"__name__", T_INT, 0}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1334 | {NULL} /* Sentinel */ |
| 1335 | }; |
| 1336 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1337 | static PyObject * |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1338 | instancemethod_getattr(im, name) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1339 | register PyMethodObject *im; |
| 1340 | PyObject *name; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1341 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1342 | char *sname = PyString_AsString(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1343 | if (sname[0] == '_') { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1344 | PyFunctionObject *func = (PyFunctionObject *)(im->im_func); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1345 | if (strcmp(sname, "__name__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1346 | Py_INCREF(func->func_name); |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1347 | return func->func_name; |
| 1348 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1349 | if (strcmp(sname, "__doc__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1350 | Py_INCREF(func->func_doc); |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1351 | return func->func_doc; |
| 1352 | } |
| 1353 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1354 | if (PyEval_GetRestricted()) { |
| 1355 | PyErr_SetString(PyExc_RuntimeError, |
| 1356 | "instance-method attributes not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 1357 | return NULL; |
| 1358 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1359 | return PyMember_Get((char *)im, instancemethod_memberlist, sname); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1360 | } |
| 1361 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1362 | static void |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1363 | instancemethod_dealloc(im) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1364 | register PyMethodObject *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1365 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1366 | Py_DECREF(im->im_func); |
| 1367 | Py_XDECREF(im->im_self); |
| 1368 | Py_DECREF(im->im_class); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1369 | im->im_self = (PyObject *)free_list; |
| 1370 | free_list = im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1371 | } |
| 1372 | |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1373 | static int |
| 1374 | instancemethod_compare(a, b) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1375 | PyMethodObject *a, *b; |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1376 | { |
Guido van Rossum | e9df727 | 1995-04-06 14:46:51 +0000 | [diff] [blame] | 1377 | if (a->im_self != b->im_self) |
| 1378 | return (a->im_self < b->im_self) ? -1 : 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1379 | return PyObject_Compare(a->im_func, b->im_func); |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1380 | } |
| 1381 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1382 | static PyObject * |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1383 | instancemethod_repr(a) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1384 | PyMethodObject *a; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1385 | { |
| 1386 | char buf[240]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1387 | PyInstanceObject *self = (PyInstanceObject *)(a->im_self); |
| 1388 | PyFunctionObject *func = (PyFunctionObject *)(a->im_func); |
| 1389 | PyClassObject *class = (PyClassObject *)(a->im_class); |
| 1390 | PyObject *fclassname, *iclassname, *funcname; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1391 | char *fcname, *icname, *fname; |
| 1392 | fclassname = class->cl_name; |
| 1393 | funcname = func->func_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1394 | if (fclassname != NULL && PyString_Check(fclassname)) |
| 1395 | fcname = PyString_AsString(fclassname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1396 | else |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1397 | fcname = "?"; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1398 | if (funcname != NULL && PyString_Check(funcname)) |
| 1399 | fname = PyString_AsString(funcname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1400 | else |
| 1401 | fname = "?"; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1402 | if (self == NULL) |
| 1403 | sprintf(buf, "<unbound method %.100s.%.100s>", fcname, fname); |
| 1404 | else { |
| 1405 | iclassname = self->in_class->cl_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1406 | if (iclassname != NULL && PyString_Check(iclassname)) |
| 1407 | icname = PyString_AsString(iclassname); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1408 | else |
| 1409 | icname = "?"; |
| 1410 | sprintf(buf, "<method %.60s.%.60s of %.60s instance at %lx>", |
| 1411 | fcname, fname, icname, (long)self); |
| 1412 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1413 | return PyString_FromString(buf); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1414 | } |
| 1415 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1416 | static long |
| 1417 | instancemethod_hash(a) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1418 | PyMethodObject *a; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1419 | { |
| 1420 | long x, y; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1421 | if (a->im_self == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1422 | x = PyObject_Hash(Py_None); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1423 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1424 | x = PyObject_Hash(a->im_self); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1425 | if (x == -1) |
| 1426 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1427 | y = PyObject_Hash(a->im_func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1428 | if (y == -1) |
| 1429 | return -1; |
| 1430 | return x ^ y; |
| 1431 | } |
| 1432 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1433 | PyTypeObject PyMethod_Type = { |
| 1434 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1435 | 0, |
Guido van Rossum | 569fce7 | 1991-04-16 08:38:43 +0000 | [diff] [blame] | 1436 | "instance method", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1437 | sizeof(PyMethodObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1438 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1439 | (destructor)instancemethod_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1440 | 0, /*tp_print*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1441 | 0, /*tp_getattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1442 | 0, /*tp_setattr*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1443 | (cmpfunc)instancemethod_compare, /*tp_compare*/ |
| 1444 | (reprfunc)instancemethod_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1445 | 0, /*tp_as_number*/ |
| 1446 | 0, /*tp_as_sequence*/ |
| 1447 | 0, /*tp_as_mapping*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1448 | (hashfunc)instancemethod_hash, /*tp_hash*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1449 | 0, /*tp_call*/ |
| 1450 | 0, /*tp_str*/ |
| 1451 | (getattrofunc)instancemethod_getattr, /*tp_getattro*/ |
| 1452 | 0, /*tp_setattro*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1453 | }; |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1454 | |
| 1455 | /* Clear out the free list */ |
| 1456 | |
| 1457 | void |
| 1458 | PyMethod_Fini() |
| 1459 | { |
| 1460 | while (free_list) { |
| 1461 | PyMethodObject *v = free_list; |
| 1462 | free_list = (PyMethodObject *)(v->im_self); |
| 1463 | PyMem_DEL(v); |
| 1464 | } |
| 1465 | } |