Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2 | /* Class object implementation */ |
| 3 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 4 | #include "Python.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 5 | #include "structmember.h" |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 6 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 7 | |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 8 | /* Forward */ |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 9 | static PyObject *class_lookup(PyClassObject *, PyObject *, |
| 10 | PyClassObject **); |
| 11 | static PyObject *instance_getattr1(PyInstanceObject *, PyObject *); |
| 12 | static PyObject *instance_getattr2(PyInstanceObject *, PyObject *); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 13 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 14 | static PyObject *getattrstr, *setattrstr, *delattrstr; |
| 15 | |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 17 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 18 | PyClass_New(PyObject *bases, PyObject *dict, PyObject *name) |
| 19 | /* bases is NULL or tuple of classobjects! */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 20 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 21 | PyClassObject *op, *dummy; |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 22 | static PyObject *docstr, *modstr, *namestr; |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 23 | if (docstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 24 | docstr= PyString_InternFromString("__doc__"); |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 25 | if (docstr == NULL) |
| 26 | return NULL; |
| 27 | } |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 28 | if (modstr == NULL) { |
| 29 | modstr= PyString_InternFromString("__module__"); |
| 30 | if (modstr == NULL) |
| 31 | return NULL; |
| 32 | } |
| 33 | if (namestr == NULL) { |
| 34 | namestr= PyString_InternFromString("__name__"); |
| 35 | if (namestr == NULL) |
| 36 | return NULL; |
| 37 | } |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 38 | if (name == NULL || !PyString_Check(name)) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 39 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 40 | "PyClass_New: name must be a string"); |
| 41 | return NULL; |
| 42 | } |
| 43 | if (dict == NULL || !PyDict_Check(dict)) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 44 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 45 | "PyClass_New: dict must be a dictionary"); |
| 46 | return NULL; |
| 47 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 48 | if (PyDict_GetItem(dict, docstr) == NULL) { |
| 49 | if (PyDict_SetItem(dict, docstr, Py_None) < 0) |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 50 | return NULL; |
| 51 | } |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 52 | if (PyDict_GetItem(dict, modstr) == NULL) { |
| 53 | PyObject *globals = PyEval_GetGlobals(); |
| 54 | if (globals != NULL) { |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 55 | PyObject *modname = PyDict_GetItem(globals, namestr); |
| 56 | if (modname != NULL) { |
| 57 | if (PyDict_SetItem(dict, modstr, modname) < 0) |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 58 | return NULL; |
| 59 | } |
| 60 | } |
| 61 | } |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 62 | if (bases == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 63 | bases = PyTuple_New(0); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 64 | if (bases == NULL) |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 65 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 66 | } |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 67 | else { |
| 68 | int i; |
| 69 | if (!PyTuple_Check(bases)) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 70 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 71 | "PyClass_New: bases must be a tuple"); |
| 72 | return NULL; |
| 73 | } |
| 74 | i = PyTuple_Size(bases); |
| 75 | while (--i >= 0) { |
| 76 | if (!PyClass_Check(PyTuple_GetItem(bases, i))) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 77 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 78 | "PyClass_New: base must be a class"); |
| 79 | return NULL; |
| 80 | } |
| 81 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 82 | Py_INCREF(bases); |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 83 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 84 | op = PyObject_NEW(PyClassObject, &PyClass_Type); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 85 | if (op == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 86 | Py_DECREF(bases); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 87 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 88 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 89 | op->cl_bases = bases; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 90 | Py_INCREF(dict); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 91 | op->cl_dict = dict; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 92 | Py_XINCREF(name); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 93 | op->cl_name = name; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 94 | if (getattrstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 95 | getattrstr = PyString_InternFromString("__getattr__"); |
| 96 | setattrstr = PyString_InternFromString("__setattr__"); |
| 97 | delattrstr = PyString_InternFromString("__delattr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 98 | } |
| 99 | op->cl_getattr = class_lookup(op, getattrstr, &dummy); |
| 100 | op->cl_setattr = class_lookup(op, setattrstr, &dummy); |
| 101 | op->cl_delattr = class_lookup(op, delattrstr, &dummy); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 102 | Py_XINCREF(op->cl_getattr); |
| 103 | Py_XINCREF(op->cl_setattr); |
| 104 | Py_XINCREF(op->cl_delattr); |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 105 | PyObject_GC_Init(op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 106 | return (PyObject *) op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 107 | } |
| 108 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 109 | static PyObject * |
| 110 | class_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
| 111 | { |
| 112 | PyObject *name, *bases, *dict; |
| 113 | static char *kwlist[] = {"name", "bases", "dict", 0}; |
| 114 | |
| 115 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "SOO", kwlist, |
| 116 | &name, &bases, &dict)) |
| 117 | return NULL; |
| 118 | return PyClass_New(bases, dict, name); |
| 119 | } |
| 120 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 121 | /* Class methods */ |
| 122 | |
| 123 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 124 | class_dealloc(PyClassObject *op) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 125 | { |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 126 | PyObject_GC_Fini(op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 127 | Py_DECREF(op->cl_bases); |
| 128 | Py_DECREF(op->cl_dict); |
| 129 | Py_XDECREF(op->cl_name); |
Guido van Rossum | 152d817 | 1998-08-04 14:59:16 +0000 | [diff] [blame] | 130 | Py_XDECREF(op->cl_getattr); |
| 131 | Py_XDECREF(op->cl_setattr); |
| 132 | Py_XDECREF(op->cl_delattr); |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 133 | op = (PyClassObject *) PyObject_AS_GC(op); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 134 | PyObject_DEL(op); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 135 | } |
| 136 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 137 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 138 | class_lookup(PyClassObject *cp, PyObject *name, PyClassObject **pclass) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 139 | { |
| 140 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 141 | PyObject *value = PyDict_GetItem(cp->cl_dict, name); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 142 | if (value != NULL) { |
| 143 | *pclass = cp; |
| 144 | return value; |
| 145 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 146 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 147 | for (i = 0; i < n; i++) { |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 148 | /* XXX What if one of the bases is not a class? */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 149 | PyObject *v = class_lookup( |
| 150 | (PyClassObject *) |
| 151 | PyTuple_GetItem(cp->cl_bases, i), name, pclass); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 152 | if (v != NULL) |
| 153 | return v; |
| 154 | } |
| 155 | return NULL; |
| 156 | } |
| 157 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 158 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 159 | class_getattr(register PyClassObject *op, PyObject *name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 160 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 161 | register PyObject *v; |
| 162 | register char *sname = PyString_AsString(name); |
| 163 | PyClassObject *class; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 164 | descrgetfunc f; |
| 165 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 166 | if (sname[0] == '_' && sname[1] == '_') { |
| 167 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 168 | if (PyEval_GetRestricted()) { |
| 169 | PyErr_SetString(PyExc_RuntimeError, |
| 170 | "class.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 171 | return NULL; |
| 172 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 173 | Py_INCREF(op->cl_dict); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 174 | return op->cl_dict; |
| 175 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 176 | if (strcmp(sname, "__bases__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 177 | Py_INCREF(op->cl_bases); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 178 | return op->cl_bases; |
| 179 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 180 | if (strcmp(sname, "__name__") == 0) { |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 181 | if (op->cl_name == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 182 | v = Py_None; |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 183 | else |
| 184 | v = op->cl_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 185 | Py_INCREF(v); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 186 | return v; |
| 187 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 188 | } |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 189 | v = class_lookup(op, name, &class); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 190 | if (v == NULL) { |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 191 | PyErr_Format(PyExc_AttributeError, |
| 192 | "class %.50s has no attribute '%.400s'", |
| 193 | PyString_AS_STRING(op->cl_name), sname); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 194 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 195 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 196 | Py_INCREF(v); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 197 | if (PyFunction_Check(v)) { |
| 198 | PyObject *w = PyMethod_New(v, (PyObject *)NULL, |
| 199 | (PyObject *)class); |
| 200 | Py_DECREF(v); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 201 | v = w; |
| 202 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 203 | f = v->ob_type->tp_descr_get; |
| 204 | if (f == NULL) |
| 205 | Py_INCREF(v); |
| 206 | else |
| 207 | v = f(v, (PyObject *)NULL, (PyObject *)op); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 208 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 209 | } |
| 210 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 211 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 212 | set_slot(PyObject **slot, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 213 | { |
| 214 | PyObject *temp = *slot; |
| 215 | Py_XINCREF(v); |
| 216 | *slot = v; |
| 217 | Py_XDECREF(temp); |
| 218 | } |
| 219 | |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 220 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 221 | set_attr_slots(PyClassObject *c) |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 222 | { |
| 223 | PyClassObject *dummy; |
| 224 | |
| 225 | set_slot(&c->cl_getattr, class_lookup(c, getattrstr, &dummy)); |
| 226 | set_slot(&c->cl_setattr, class_lookup(c, setattrstr, &dummy)); |
| 227 | set_slot(&c->cl_delattr, class_lookup(c, delattrstr, &dummy)); |
| 228 | } |
| 229 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 230 | static char * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 231 | set_dict(PyClassObject *c, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 232 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 233 | if (v == NULL || !PyDict_Check(v)) |
| 234 | return "__dict__ must be a dictionary object"; |
| 235 | set_slot(&c->cl_dict, v); |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 236 | set_attr_slots(c); |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 237 | return ""; |
| 238 | } |
| 239 | |
| 240 | static char * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 241 | set_bases(PyClassObject *c, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 242 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 243 | int i, n; |
| 244 | |
| 245 | if (v == NULL || !PyTuple_Check(v)) |
| 246 | return "__bases__ must be a tuple object"; |
| 247 | n = PyTuple_Size(v); |
| 248 | for (i = 0; i < n; i++) { |
| 249 | PyObject *x = PyTuple_GET_ITEM(v, i); |
| 250 | if (!PyClass_Check(x)) |
| 251 | return "__bases__ items must be classes"; |
| 252 | if (PyClass_IsSubclass(x, (PyObject *)c)) |
| 253 | return "a __bases__ item causes an inheritance cycle"; |
| 254 | } |
| 255 | set_slot(&c->cl_bases, v); |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 256 | set_attr_slots(c); |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 257 | return ""; |
| 258 | } |
| 259 | |
| 260 | static char * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 261 | set_name(PyClassObject *c, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 262 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 263 | if (v == NULL || !PyString_Check(v)) |
| 264 | return "__name__ must be a string object"; |
Guido van Rossum | ad89bbc | 2000-06-28 21:57:18 +0000 | [diff] [blame] | 265 | if (strlen(PyString_AS_STRING(v)) != (size_t)PyString_GET_SIZE(v)) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 266 | return "__name__ must not contain null bytes"; |
| 267 | set_slot(&c->cl_name, v); |
| 268 | return ""; |
| 269 | } |
| 270 | |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 271 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 272 | class_setattr(PyClassObject *op, PyObject *name, PyObject *v) |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 273 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 274 | char *sname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 275 | if (PyEval_GetRestricted()) { |
| 276 | PyErr_SetString(PyExc_RuntimeError, |
Guido van Rossum | ac21f6a | 1995-08-04 04:05:31 +0000 | [diff] [blame] | 277 | "classes are read-only in restricted mode"); |
| 278 | return -1; |
| 279 | } |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 280 | sname = PyString_AsString(name); |
| 281 | if (sname[0] == '_' && sname[1] == '_') { |
| 282 | int n = PyString_Size(name); |
| 283 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 284 | char *err = NULL; |
| 285 | if (strcmp(sname, "__dict__") == 0) |
| 286 | err = set_dict(op, v); |
| 287 | else if (strcmp(sname, "__bases__") == 0) |
| 288 | err = set_bases(op, v); |
| 289 | else if (strcmp(sname, "__name__") == 0) |
| 290 | err = set_name(op, v); |
| 291 | else if (strcmp(sname, "__getattr__") == 0) |
| 292 | set_slot(&op->cl_getattr, v); |
| 293 | else if (strcmp(sname, "__setattr__") == 0) |
| 294 | set_slot(&op->cl_setattr, v); |
| 295 | else if (strcmp(sname, "__delattr__") == 0) |
| 296 | set_slot(&op->cl_delattr, v); |
| 297 | /* For the last three, we fall through to update the |
| 298 | dictionary as well. */ |
| 299 | if (err != NULL) { |
| 300 | if (*err == '\0') |
| 301 | return 0; |
| 302 | PyErr_SetString(PyExc_TypeError, err); |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 303 | return -1; |
| 304 | } |
| 305 | } |
| 306 | } |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 307 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 308 | int rv = PyDict_DelItem(op->cl_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 309 | if (rv < 0) |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 310 | PyErr_Format(PyExc_AttributeError, |
| 311 | "class %.50s has no attribute '%.400s'", |
| 312 | PyString_AS_STRING(op->cl_name), sname); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 313 | return rv; |
| 314 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 315 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 316 | return PyDict_SetItem(op->cl_dict, name, v); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 317 | } |
| 318 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 319 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 320 | class_repr(PyClassObject *op) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 321 | { |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 322 | PyObject *mod = PyDict_GetItemString(op->cl_dict, "__module__"); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 323 | char buf[140]; |
| 324 | char *name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 325 | if (op->cl_name == NULL || !PyString_Check(op->cl_name)) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 326 | name = "?"; |
| 327 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 328 | name = PyString_AsString(op->cl_name); |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 329 | if (mod == NULL || !PyString_Check(mod)) |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 330 | sprintf(buf, "<class ?.%.100s at %p>", name, op); |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 331 | else |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 332 | sprintf(buf, "<class %.50s.%.50s at %p>", |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 333 | PyString_AsString(mod), |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 334 | name, op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 335 | return PyString_FromString(buf); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 336 | } |
| 337 | |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 338 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 339 | class_str(PyClassObject *op) |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 340 | { |
| 341 | PyObject *mod = PyDict_GetItemString(op->cl_dict, "__module__"); |
| 342 | PyObject *name = op->cl_name; |
| 343 | PyObject *res; |
| 344 | int m, n; |
| 345 | |
| 346 | if (name == NULL || !PyString_Check(name)) |
| 347 | return class_repr(op); |
| 348 | if (mod == NULL || !PyString_Check(mod)) { |
| 349 | Py_INCREF(name); |
| 350 | return name; |
| 351 | } |
| 352 | m = PyString_Size(mod); |
| 353 | n = PyString_Size(name); |
| 354 | res = PyString_FromStringAndSize((char *)NULL, m+1+n); |
| 355 | if (res != NULL) { |
| 356 | char *s = PyString_AsString(res); |
| 357 | memcpy(s, PyString_AsString(mod), m); |
| 358 | s += m; |
| 359 | *s++ = '.'; |
| 360 | memcpy(s, PyString_AsString(name), n); |
| 361 | } |
| 362 | return res; |
| 363 | } |
| 364 | |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 365 | static int |
| 366 | class_traverse(PyClassObject *o, visitproc visit, void *arg) |
| 367 | { |
| 368 | int err; |
| 369 | if (o->cl_bases) { |
| 370 | err = visit(o->cl_bases, arg); |
| 371 | if (err) |
| 372 | return err; |
| 373 | } |
| 374 | if (o->cl_dict) { |
| 375 | err = visit(o->cl_dict, arg); |
| 376 | if (err) |
| 377 | return err; |
| 378 | } |
| 379 | if (o->cl_name) { |
| 380 | err = visit(o->cl_name, arg); |
| 381 | if (err) |
| 382 | return err; |
| 383 | } |
| 384 | if (o->cl_getattr) { |
| 385 | err = visit(o->cl_getattr, arg); |
| 386 | if (err) |
| 387 | return err; |
| 388 | } |
| 389 | if (o->cl_setattr) { |
| 390 | err = visit(o->cl_setattr, arg); |
| 391 | if (err) |
| 392 | return err; |
| 393 | } |
| 394 | if (o->cl_delattr) { |
| 395 | err = visit(o->cl_delattr, arg); |
| 396 | if (err) |
| 397 | return err; |
| 398 | } |
| 399 | return 0; |
| 400 | } |
| 401 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 402 | PyTypeObject PyClass_Type = { |
| 403 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 404 | 0, |
| 405 | "class", |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 406 | sizeof(PyClassObject) + PyGC_HEAD_SIZE, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 407 | 0, |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 408 | (destructor)class_dealloc, /* tp_dealloc */ |
| 409 | 0, /* tp_print */ |
| 410 | 0, /* tp_getattr */ |
| 411 | 0, /* tp_setattr */ |
| 412 | 0, /* tp_compare */ |
| 413 | (reprfunc)class_repr, /* tp_repr */ |
| 414 | 0, /* tp_as_number */ |
| 415 | 0, /* tp_as_sequence */ |
| 416 | 0, /* tp_as_mapping */ |
| 417 | 0, /* tp_hash */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 418 | PyInstance_New, /* tp_call */ |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 419 | (reprfunc)class_str, /* tp_str */ |
| 420 | (getattrofunc)class_getattr, /* tp_getattro */ |
| 421 | (setattrofunc)class_setattr, /* tp_setattro */ |
| 422 | 0, /* tp_as_buffer */ |
| 423 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC, /* tp_flags */ |
| 424 | 0, /* tp_doc */ |
| 425 | (traverseproc)class_traverse, /* tp_traverse */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 426 | 0, /* tp_clear */ |
| 427 | 0, /* tp_richcompare */ |
| 428 | 0, /* tp_weaklistoffset */ |
| 429 | 0, /* tp_iter */ |
| 430 | 0, /* tp_iternext */ |
| 431 | 0, /* tp_methods */ |
| 432 | 0, /* tp_members */ |
| 433 | 0, /* tp_getset */ |
| 434 | 0, /* tp_base */ |
| 435 | 0, /* tp_dict */ |
| 436 | 0, /* tp_descr_get */ |
| 437 | 0, /* tp_descr_set */ |
| 438 | 0, /* tp_dictoffset */ |
| 439 | 0, /* tp_init */ |
| 440 | 0, /* tp_alloc */ |
| 441 | class_new, /* tp_new */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 442 | }; |
| 443 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 444 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 445 | PyClass_IsSubclass(PyObject *class, PyObject *base) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 446 | { |
| 447 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 448 | PyClassObject *cp; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 449 | if (class == base) |
| 450 | return 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 451 | if (class == NULL || !PyClass_Check(class)) |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 452 | return 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 453 | cp = (PyClassObject *)class; |
| 454 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 455 | for (i = 0; i < n; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 456 | if (PyClass_IsSubclass(PyTuple_GetItem(cp->cl_bases, i), base)) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 457 | return 1; |
| 458 | } |
| 459 | return 0; |
| 460 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 461 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 462 | |
| 463 | /* Instance objects */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 464 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 465 | PyObject * |
Fred Drake | 5cc2c8c | 2001-01-28 03:53:08 +0000 | [diff] [blame] | 466 | PyInstance_NewRaw(PyObject *klass, PyObject *dict) |
| 467 | { |
| 468 | PyInstanceObject *inst; |
| 469 | |
| 470 | if (!PyClass_Check(klass)) { |
| 471 | PyErr_BadInternalCall(); |
| 472 | return NULL; |
| 473 | } |
| 474 | if (dict == NULL) { |
| 475 | dict = PyDict_New(); |
| 476 | if (dict == NULL) |
| 477 | return NULL; |
| 478 | } |
| 479 | else { |
| 480 | if (!PyDict_Check(dict)) { |
| 481 | PyErr_BadInternalCall(); |
| 482 | return NULL; |
| 483 | } |
| 484 | Py_INCREF(dict); |
| 485 | } |
| 486 | inst = PyObject_NEW(PyInstanceObject, &PyInstance_Type); |
| 487 | if (inst == NULL) { |
| 488 | Py_DECREF(dict); |
| 489 | return NULL; |
| 490 | } |
Fred Drake | 4e262a9 | 2001-03-22 18:26:47 +0000 | [diff] [blame] | 491 | inst->in_weakreflist = NULL; |
Fred Drake | 5cc2c8c | 2001-01-28 03:53:08 +0000 | [diff] [blame] | 492 | Py_INCREF(klass); |
| 493 | inst->in_class = (PyClassObject *)klass; |
| 494 | inst->in_dict = dict; |
| 495 | PyObject_GC_Init(inst); |
| 496 | return (PyObject *)inst; |
| 497 | } |
| 498 | |
| 499 | PyObject * |
| 500 | PyInstance_New(PyObject *klass, PyObject *arg, PyObject *kw) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 501 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 502 | register PyInstanceObject *inst; |
| 503 | PyObject *init; |
| 504 | static PyObject *initstr; |
Fred Drake | 5cc2c8c | 2001-01-28 03:53:08 +0000 | [diff] [blame] | 505 | |
| 506 | inst = (PyInstanceObject *) PyInstance_NewRaw(klass, NULL); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 507 | if (inst == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 508 | return NULL; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 509 | if (initstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 510 | initstr = PyString_InternFromString("__init__"); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 511 | init = instance_getattr2(inst, initstr); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 512 | if (init == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 513 | if ((arg != NULL && (!PyTuple_Check(arg) || |
| 514 | PyTuple_Size(arg) != 0)) |
| 515 | || (kw != NULL && (!PyDict_Check(kw) || |
| 516 | PyDict_Size(kw) != 0))) { |
| 517 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | a83f270 | 1995-07-26 18:07:32 +0000 | [diff] [blame] | 518 | "this constructor takes no arguments"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 519 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 520 | inst = NULL; |
| 521 | } |
| 522 | } |
| 523 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 524 | PyObject *res = PyEval_CallObjectWithKeywords(init, arg, kw); |
| 525 | Py_DECREF(init); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 526 | if (res == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 527 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 528 | inst = NULL; |
| 529 | } |
| 530 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 531 | if (res != Py_None) { |
| 532 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 533 | "__init__() should return None"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 534 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 535 | inst = NULL; |
| 536 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 537 | Py_DECREF(res); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 538 | } |
| 539 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 540 | return (PyObject *)inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 541 | } |
| 542 | |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 543 | /* Instance methods */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 544 | |
| 545 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 546 | instance_dealloc(register PyInstanceObject *inst) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 547 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 548 | PyObject *error_type, *error_value, *error_traceback; |
| 549 | PyObject *del; |
| 550 | static PyObject *delstr; |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 551 | #ifdef Py_REF_DEBUG |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 552 | extern long _Py_RefTotal; |
Skip Montanaro | 4ca150b | 2000-07-08 12:04:57 +0000 | [diff] [blame] | 553 | #endif |
Fred Drake | 41deb1e | 2001-02-01 05:27:45 +0000 | [diff] [blame] | 554 | |
Fred Drake | b60654b | 2001-02-26 18:56:37 +0000 | [diff] [blame] | 555 | PyObject_ClearWeakRefs((PyObject *) inst); |
Fred Drake | 41deb1e | 2001-02-01 05:27:45 +0000 | [diff] [blame] | 556 | |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 557 | /* Temporarily resurrect the object. */ |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 558 | #ifdef Py_TRACE_REFS |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 559 | #ifndef Py_REF_DEBUG |
| 560 | # error "Py_TRACE_REFS defined but Py_REF_DEBUG not." |
| 561 | #endif |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 562 | /* much too complicated if Py_TRACE_REFS defined */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 563 | inst->ob_type = &PyInstance_Type; |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 564 | _Py_NewReference((PyObject *)inst); |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 565 | #ifdef COUNT_ALLOCS |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 566 | /* compensate for boost in _Py_NewReference; note that |
| 567 | * _Py_RefTotal was also boosted; we'll knock that down later. |
| 568 | */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 569 | inst->ob_type->tp_allocs--; |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 570 | #endif |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 571 | #else /* !Py_TRACE_REFS */ |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 572 | /* Py_INCREF boosts _Py_RefTotal if Py_REF_DEBUG is defined */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 573 | Py_INCREF(inst); |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 574 | #endif /* !Py_TRACE_REFS */ |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 575 | |
| 576 | /* Save the current exception, if any. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 577 | PyErr_Fetch(&error_type, &error_value, &error_traceback); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 578 | /* Execute __del__ method, if any. */ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 579 | if (delstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 580 | delstr = PyString_InternFromString("__del__"); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 581 | if ((del = instance_getattr2(inst, delstr)) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 582 | PyObject *res = PyEval_CallObject(del, (PyObject *)NULL); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 583 | if (res == NULL) |
Jeremy Hylton | b709df3 | 2000-09-01 02:47:25 +0000 | [diff] [blame] | 584 | PyErr_WriteUnraisable(del); |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 585 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 586 | Py_DECREF(res); |
| 587 | Py_DECREF(del); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 588 | } |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 589 | /* Restore the saved exception. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 590 | PyErr_Restore(error_type, error_value, error_traceback); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 591 | /* Undo the temporary resurrection; can't use DECREF here, it would |
| 592 | * cause a recursive call. |
| 593 | */ |
| 594 | #ifdef Py_REF_DEBUG |
| 595 | /* _Py_RefTotal was boosted either by _Py_NewReference or |
| 596 | * Py_INCREF above. |
| 597 | */ |
| 598 | _Py_RefTotal--; |
| 599 | #endif |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 600 | if (--inst->ob_refcnt > 0) { |
| 601 | #ifdef COUNT_ALLOCS |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 602 | inst->ob_type->tp_frees--; |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 603 | #endif |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 604 | return; /* __del__ added a reference; don't delete now */ |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 605 | } |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 606 | #ifdef Py_TRACE_REFS |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 607 | _Py_ForgetReference((PyObject *)inst); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 608 | #ifdef COUNT_ALLOCS |
| 609 | /* compensate for increment in _Py_ForgetReference */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 610 | inst->ob_type->tp_frees--; |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 611 | #endif |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 612 | #ifndef WITH_CYCLE_GC |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 613 | inst->ob_type = NULL; |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 614 | #endif |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 615 | #endif |
Neil Schemenauer | ce20967 | 2000-09-15 18:57:21 +0000 | [diff] [blame] | 616 | PyObject_GC_Fini(inst); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 617 | Py_DECREF(inst->in_class); |
| 618 | Py_XDECREF(inst->in_dict); |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 619 | inst = (PyInstanceObject *) PyObject_AS_GC(inst); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 620 | PyObject_DEL(inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 621 | } |
| 622 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 623 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 624 | instance_getattr1(register PyInstanceObject *inst, PyObject *name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 625 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 626 | register PyObject *v; |
| 627 | register char *sname = PyString_AsString(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 628 | if (sname[0] == '_' && sname[1] == '_') { |
| 629 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 630 | if (PyEval_GetRestricted()) { |
| 631 | PyErr_SetString(PyExc_RuntimeError, |
| 632 | "instance.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 633 | return NULL; |
| 634 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 635 | Py_INCREF(inst->in_dict); |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 636 | return inst->in_dict; |
| 637 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 638 | if (strcmp(sname, "__class__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 639 | Py_INCREF(inst->in_class); |
| 640 | return (PyObject *)inst->in_class; |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 641 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 642 | } |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 643 | v = instance_getattr2(inst, name); |
| 644 | if (v == NULL) { |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 645 | PyErr_Format(PyExc_AttributeError, |
| 646 | "%.50s instance has no attribute '%.400s'", |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 647 | PyString_AS_STRING(inst->in_class->cl_name), sname); |
| 648 | } |
| 649 | return v; |
| 650 | } |
| 651 | |
| 652 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 653 | instance_getattr2(register PyInstanceObject *inst, PyObject *name) |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 654 | { |
| 655 | register PyObject *v; |
| 656 | PyClassObject *class; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 657 | descrgetfunc f; |
| 658 | |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 659 | class = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 660 | v = PyDict_GetItem(inst->in_dict, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 661 | if (v == NULL) { |
| 662 | v = class_lookup(inst->in_class, name, &class); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 663 | if (v == NULL) |
| 664 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 665 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 666 | Py_INCREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 667 | if (class != NULL) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 668 | f = v->ob_type->tp_descr_get; |
| 669 | if (f != NULL) { |
| 670 | PyObject *w = f(v, (PyObject *)inst, |
| 671 | (PyObject *)(inst->in_class)); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 672 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 673 | v = w; |
| 674 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 675 | else if (PyMethod_Check(v)) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 676 | /* XXX This should be a tp_descr_get slot of |
| 677 | PyMethodObjects */ |
| 678 | PyObject *im_class = PyMethod_GET_CLASS(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 679 | /* Only if classes are compatible */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 680 | if (PyClass_IsSubclass((PyObject *)class, im_class)) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 681 | PyObject *im_func = PyMethod_GET_FUNCTION(v); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 682 | PyObject *w = PyMethod_New(im_func, |
| 683 | (PyObject *)inst, im_class); |
| 684 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 685 | v = w; |
| 686 | } |
| 687 | } |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 688 | } |
| 689 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 690 | } |
| 691 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 692 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 693 | instance_getattr(register PyInstanceObject *inst, PyObject *name) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 694 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 695 | register PyObject *func, *res; |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 696 | res = instance_getattr1(inst, name); |
| 697 | if (res == NULL && (func = inst->in_class->cl_getattr) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 698 | PyObject *args; |
| 699 | PyErr_Clear(); |
| 700 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 701 | if (args == NULL) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 702 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 703 | res = PyEval_CallObject(func, args); |
| 704 | Py_DECREF(args); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 705 | } |
| 706 | return res; |
| 707 | } |
| 708 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 709 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 710 | instance_setattr1(PyInstanceObject *inst, PyObject *name, PyObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 711 | { |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 712 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 713 | int rv = PyDict_DelItem(inst->in_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 714 | if (rv < 0) |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 715 | PyErr_Format(PyExc_AttributeError, |
| 716 | "%.50s instance has no attribute '%.400s'", |
| 717 | PyString_AS_STRING(inst->in_class->cl_name), |
| 718 | PyString_AS_STRING(name)); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 719 | return rv; |
| 720 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 721 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 722 | return PyDict_SetItem(inst->in_dict, name, v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 723 | } |
| 724 | |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 725 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 726 | instance_setattr(PyInstanceObject *inst, PyObject *name, PyObject *v) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 727 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 728 | PyObject *func, *args, *res, *tmp; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 729 | char *sname = PyString_AsString(name); |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 730 | if (sname[0] == '_' && sname[1] == '_') { |
| 731 | int n = PyString_Size(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 732 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 733 | if (strcmp(sname, "__dict__") == 0) { |
| 734 | if (PyEval_GetRestricted()) { |
| 735 | PyErr_SetString(PyExc_RuntimeError, |
| 736 | "__dict__ not accessible in restricted mode"); |
| 737 | return -1; |
| 738 | } |
| 739 | if (v == NULL || !PyDict_Check(v)) { |
| 740 | PyErr_SetString(PyExc_TypeError, |
| 741 | "__dict__ must be set to a dictionary"); |
| 742 | return -1; |
| 743 | } |
| 744 | tmp = inst->in_dict; |
| 745 | Py_INCREF(v); |
| 746 | inst->in_dict = v; |
| 747 | Py_DECREF(tmp); |
| 748 | return 0; |
| 749 | } |
| 750 | if (strcmp(sname, "__class__") == 0) { |
| 751 | if (PyEval_GetRestricted()) { |
| 752 | PyErr_SetString(PyExc_RuntimeError, |
| 753 | "__class__ not accessible in restricted mode"); |
| 754 | return -1; |
| 755 | } |
| 756 | if (v == NULL || !PyClass_Check(v)) { |
| 757 | PyErr_SetString(PyExc_TypeError, |
| 758 | "__class__ must be set to a class"); |
| 759 | return -1; |
| 760 | } |
| 761 | tmp = (PyObject *)(inst->in_class); |
| 762 | Py_INCREF(v); |
| 763 | inst->in_class = (PyClassObject *)v; |
| 764 | Py_DECREF(tmp); |
| 765 | return 0; |
| 766 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 767 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 768 | } |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 769 | if (v == NULL) |
| 770 | func = inst->in_class->cl_delattr; |
| 771 | else |
| 772 | func = inst->in_class->cl_setattr; |
| 773 | if (func == NULL) |
| 774 | return instance_setattr1(inst, name, v); |
| 775 | if (v == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 776 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 777 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 778 | args = Py_BuildValue("(OOO)", inst, name, v); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 779 | if (args == NULL) |
| 780 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 781 | res = PyEval_CallObject(func, args); |
| 782 | Py_DECREF(args); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 783 | if (res == NULL) |
| 784 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 785 | Py_DECREF(res); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 786 | return 0; |
| 787 | } |
| 788 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 789 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 790 | instance_repr(PyInstanceObject *inst) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 791 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 792 | PyObject *func; |
| 793 | PyObject *res; |
| 794 | static PyObject *reprstr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 795 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 796 | if (reprstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 797 | reprstr = PyString_InternFromString("__repr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 798 | func = instance_getattr(inst, reprstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 799 | if (func == NULL) { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 800 | char buf[140]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 801 | PyObject *classname = inst->in_class->cl_name; |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 802 | PyObject *mod = PyDict_GetItemString( |
| 803 | inst->in_class->cl_dict, "__module__"); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 804 | char *cname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 805 | if (classname != NULL && PyString_Check(classname)) |
| 806 | cname = PyString_AsString(classname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 807 | else |
| 808 | cname = "?"; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 809 | PyErr_Clear(); |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 810 | if (mod == NULL || !PyString_Check(mod)) |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 811 | sprintf(buf, "<?.%.100s instance at %p>", |
| 812 | cname, inst); |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 813 | else |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 814 | sprintf(buf, "<%.50s.%.50s instance at %p>", |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 815 | PyString_AsString(mod), |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 816 | cname, inst); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 817 | return PyString_FromString(buf); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 818 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 819 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 820 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 821 | return res; |
| 822 | } |
| 823 | |
Guido van Rossum | 82c690f | 2001-04-30 14:39:18 +0000 | [diff] [blame] | 824 | static PyObject * |
| 825 | instance_str(PyInstanceObject *inst) |
| 826 | { |
| 827 | PyObject *func; |
| 828 | PyObject *res; |
| 829 | static PyObject *strstr; |
| 830 | |
| 831 | if (strstr == NULL) |
| 832 | strstr = PyString_InternFromString("__str__"); |
| 833 | func = instance_getattr(inst, strstr); |
| 834 | if (func == NULL) { |
| 835 | PyErr_Clear(); |
| 836 | return instance_repr(inst); |
| 837 | } |
| 838 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 839 | Py_DECREF(func); |
| 840 | return res; |
| 841 | } |
| 842 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 843 | static long |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 844 | instance_hash(PyInstanceObject *inst) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 845 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 846 | PyObject *func; |
| 847 | PyObject *res; |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 848 | long outcome; |
Guido van Rossum | 65e8bd7 | 2001-01-18 23:46:31 +0000 | [diff] [blame] | 849 | static PyObject *hashstr, *eqstr, *cmpstr; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 850 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 851 | if (hashstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 852 | hashstr = PyString_InternFromString("__hash__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 853 | func = instance_getattr(inst, hashstr); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 854 | if (func == NULL) { |
Guido van Rossum | 65e8bd7 | 2001-01-18 23:46:31 +0000 | [diff] [blame] | 855 | /* If there is no __eq__ and no __cmp__ method, we hash on the |
| 856 | address. If an __eq__ or __cmp__ method exists, there must |
| 857 | be a __hash__. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 858 | PyErr_Clear(); |
Guido van Rossum | 65e8bd7 | 2001-01-18 23:46:31 +0000 | [diff] [blame] | 859 | if (eqstr == NULL) |
| 860 | eqstr = PyString_InternFromString("__eq__"); |
| 861 | func = instance_getattr(inst, eqstr); |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 862 | if (func == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 863 | PyErr_Clear(); |
Guido van Rossum | 65e8bd7 | 2001-01-18 23:46:31 +0000 | [diff] [blame] | 864 | if (cmpstr == NULL) |
| 865 | cmpstr = PyString_InternFromString("__cmp__"); |
| 866 | func = instance_getattr(inst, cmpstr); |
| 867 | if (func == NULL) { |
| 868 | PyErr_Clear(); |
| 869 | return _Py_HashPointer(inst); |
| 870 | } |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 871 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 872 | PyErr_SetString(PyExc_TypeError, "unhashable instance"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 873 | return -1; |
| 874 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 875 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 876 | Py_DECREF(func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 877 | if (res == NULL) |
| 878 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 879 | if (PyInt_Check(res)) { |
| 880 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 881 | if (outcome == -1) |
| 882 | outcome = -2; |
| 883 | } |
| 884 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 885 | PyErr_SetString(PyExc_TypeError, |
| 886 | "__hash__() should return an int"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 887 | outcome = -1; |
| 888 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 889 | Py_DECREF(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 890 | return outcome; |
| 891 | } |
| 892 | |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 893 | static int |
| 894 | instance_traverse(PyInstanceObject *o, visitproc visit, void *arg) |
| 895 | { |
| 896 | int err; |
| 897 | if (o->in_class) { |
| 898 | err = visit((PyObject *)(o->in_class), arg); |
| 899 | if (err) |
| 900 | return err; |
| 901 | } |
| 902 | if (o->in_dict) { |
| 903 | err = visit(o->in_dict, arg); |
| 904 | if (err) |
| 905 | return err; |
| 906 | } |
Jeremy Hylton | d22162b | 2000-06-23 17:14:56 +0000 | [diff] [blame] | 907 | return 0; |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 908 | } |
| 909 | |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 910 | static PyObject *getitemstr, *setitemstr, *delitemstr, *lenstr; |
| 911 | static PyObject *iterstr, *nextstr; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 912 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 913 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 914 | instance_length(PyInstanceObject *inst) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 915 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 916 | PyObject *func; |
| 917 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 918 | int outcome; |
| 919 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 920 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 921 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 922 | func = instance_getattr(inst, lenstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 923 | if (func == NULL) |
| 924 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 925 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 926 | Py_DECREF(func); |
Guido van Rossum | d014ea6 | 1992-11-26 10:30:26 +0000 | [diff] [blame] | 927 | if (res == NULL) |
| 928 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 929 | if (PyInt_Check(res)) { |
| 930 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 931 | if (outcome < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 932 | PyErr_SetString(PyExc_ValueError, |
| 933 | "__len__() should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 934 | } |
| 935 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 936 | PyErr_SetString(PyExc_TypeError, |
| 937 | "__len__() should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 938 | outcome = -1; |
| 939 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 940 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 941 | return outcome; |
| 942 | } |
| 943 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 944 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 945 | instance_subscript(PyInstanceObject *inst, PyObject *key) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 946 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 947 | PyObject *func; |
| 948 | PyObject *arg; |
| 949 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 950 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 951 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 952 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 953 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 954 | if (func == NULL) |
| 955 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 956 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 957 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 958 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 959 | return NULL; |
| 960 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 961 | res = PyEval_CallObject(func, arg); |
| 962 | Py_DECREF(func); |
| 963 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 964 | return res; |
| 965 | } |
| 966 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 967 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 968 | instance_ass_subscript(PyInstanceObject *inst, PyObject *key, PyObject *value) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 969 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 970 | PyObject *func; |
| 971 | PyObject *arg; |
| 972 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 973 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 974 | if (value == NULL) { |
| 975 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 976 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 977 | func = instance_getattr(inst, delitemstr); |
| 978 | } |
| 979 | else { |
| 980 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 981 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 982 | func = instance_getattr(inst, setitemstr); |
| 983 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 984 | if (func == NULL) |
| 985 | return -1; |
| 986 | if (value == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 987 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 988 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 989 | arg = Py_BuildValue("(OO)", key, value); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 990 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 991 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 992 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 993 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 994 | res = PyEval_CallObject(func, arg); |
| 995 | Py_DECREF(func); |
| 996 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 997 | if (res == NULL) |
| 998 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 999 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1000 | return 0; |
| 1001 | } |
| 1002 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1003 | static PyMappingMethods instance_as_mapping = { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1004 | (inquiry)instance_length, /* mp_length */ |
| 1005 | (binaryfunc)instance_subscript, /* mp_subscript */ |
| 1006 | (objobjargproc)instance_ass_subscript, /* mp_ass_subscript */ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1007 | }; |
| 1008 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1009 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1010 | instance_item(PyInstanceObject *inst, int i) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1011 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1012 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1013 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1014 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1015 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1016 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1017 | if (func == NULL) |
| 1018 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1019 | arg = Py_BuildValue("(i)", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1020 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1021 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1022 | return NULL; |
| 1023 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1024 | res = PyEval_CallObject(func, arg); |
| 1025 | Py_DECREF(func); |
| 1026 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1027 | return res; |
| 1028 | } |
| 1029 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1030 | static PyObject * |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1031 | sliceobj_from_intint(int i, int j) |
| 1032 | { |
| 1033 | PyObject *start, *end, *res; |
| 1034 | |
| 1035 | start = PyInt_FromLong((long)i); |
| 1036 | if (!start) |
| 1037 | return NULL; |
| 1038 | |
| 1039 | end = PyInt_FromLong((long)j); |
| 1040 | if (!end) { |
| 1041 | Py_DECREF(start); |
| 1042 | return NULL; |
| 1043 | } |
| 1044 | res = PySlice_New(start, end, NULL); |
| 1045 | Py_DECREF(start); |
| 1046 | Py_DECREF(end); |
| 1047 | return res; |
| 1048 | } |
| 1049 | |
| 1050 | |
| 1051 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1052 | instance_slice(PyInstanceObject *inst, int i, int j) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1053 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1054 | PyObject *func, *arg, *res; |
| 1055 | static PyObject *getslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1056 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1057 | if (getslicestr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1058 | getslicestr = PyString_InternFromString("__getslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1059 | func = instance_getattr(inst, getslicestr); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1060 | |
| 1061 | if (func == NULL) { |
| 1062 | PyErr_Clear(); |
| 1063 | |
| 1064 | if (getitemstr == NULL) |
| 1065 | getitemstr = PyString_InternFromString("__getitem__"); |
| 1066 | func = instance_getattr(inst, getitemstr); |
| 1067 | if (func == NULL) |
| 1068 | return NULL; |
| 1069 | arg = Py_BuildValue("(N)", sliceobj_from_intint(i, j)); |
| 1070 | } else |
| 1071 | arg = Py_BuildValue("(ii)", i, j); |
| 1072 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1073 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1074 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1075 | return NULL; |
| 1076 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1077 | res = PyEval_CallObject(func, arg); |
| 1078 | Py_DECREF(func); |
| 1079 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1080 | return res; |
| 1081 | } |
| 1082 | |
| 1083 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1084 | instance_ass_item(PyInstanceObject *inst, int i, PyObject *item) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1085 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1086 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1087 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1088 | if (item == NULL) { |
| 1089 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1090 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1091 | func = instance_getattr(inst, delitemstr); |
| 1092 | } |
| 1093 | else { |
| 1094 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1095 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1096 | func = instance_getattr(inst, setitemstr); |
| 1097 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1098 | if (func == NULL) |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1099 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1100 | if (item == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1101 | arg = Py_BuildValue("i", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1102 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1103 | arg = Py_BuildValue("(iO)", i, item); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1104 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1105 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1106 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1107 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1108 | res = PyEval_CallObject(func, arg); |
| 1109 | Py_DECREF(func); |
| 1110 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1111 | if (res == NULL) |
| 1112 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1113 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1114 | return 0; |
| 1115 | } |
| 1116 | |
| 1117 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1118 | instance_ass_slice(PyInstanceObject *inst, int i, int j, PyObject *value) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1119 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1120 | PyObject *func, *arg, *res; |
| 1121 | static PyObject *setslicestr, *delslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1122 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1123 | if (value == NULL) { |
| 1124 | if (delslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1125 | delslicestr = |
| 1126 | PyString_InternFromString("__delslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1127 | func = instance_getattr(inst, delslicestr); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1128 | if (func == NULL) { |
| 1129 | PyErr_Clear(); |
| 1130 | if (delitemstr == NULL) |
| 1131 | delitemstr = |
| 1132 | PyString_InternFromString("__delitem__"); |
| 1133 | func = instance_getattr(inst, delitemstr); |
| 1134 | if (func == NULL) |
| 1135 | return -1; |
| 1136 | |
| 1137 | arg = Py_BuildValue("(N)", |
| 1138 | sliceobj_from_intint(i, j)); |
| 1139 | } else |
| 1140 | arg = Py_BuildValue("(ii)", i, j); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1141 | } |
| 1142 | else { |
| 1143 | if (setslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1144 | setslicestr = |
| 1145 | PyString_InternFromString("__setslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1146 | func = instance_getattr(inst, setslicestr); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1147 | if (func == NULL) { |
| 1148 | PyErr_Clear(); |
| 1149 | if (setitemstr == NULL) |
| 1150 | setitemstr = |
| 1151 | PyString_InternFromString("__setitem__"); |
| 1152 | func = instance_getattr(inst, setitemstr); |
| 1153 | if (func == NULL) |
| 1154 | return -1; |
| 1155 | |
| 1156 | arg = Py_BuildValue("(NO)", |
| 1157 | sliceobj_from_intint(i, j), value); |
| 1158 | } else |
| 1159 | arg = Py_BuildValue("(iiO)", i, j, value); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1160 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1161 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1162 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1163 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1164 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1165 | res = PyEval_CallObject(func, arg); |
| 1166 | Py_DECREF(func); |
| 1167 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1168 | if (res == NULL) |
| 1169 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1170 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1171 | return 0; |
| 1172 | } |
| 1173 | |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1174 | static int |
| 1175 | instance_contains(PyInstanceObject *inst, PyObject *member) |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1176 | { |
| 1177 | static PyObject *__contains__; |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1178 | PyObject *func; |
| 1179 | |
| 1180 | /* Try __contains__ first. |
| 1181 | * If that can't be done, try iterator-based searching. |
| 1182 | */ |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1183 | |
| 1184 | if(__contains__ == NULL) { |
| 1185 | __contains__ = PyString_InternFromString("__contains__"); |
| 1186 | if(__contains__ == NULL) |
| 1187 | return -1; |
| 1188 | } |
| 1189 | func = instance_getattr(inst, __contains__); |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1190 | if (func) { |
| 1191 | PyObject *res; |
| 1192 | int ret; |
| 1193 | PyObject *arg = Py_BuildValue("(O)", member); |
| 1194 | if(arg == NULL) { |
| 1195 | Py_DECREF(func); |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1196 | return -1; |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1197 | } |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1198 | res = PyEval_CallObject(func, arg); |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1199 | Py_DECREF(func); |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1200 | Py_DECREF(arg); |
| 1201 | if(res == NULL) |
| 1202 | return -1; |
| 1203 | ret = PyObject_IsTrue(res); |
| 1204 | Py_DECREF(res); |
| 1205 | return ret; |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1206 | } |
Tim Peters | cb8d368 | 2001-05-05 21:05:01 +0000 | [diff] [blame] | 1207 | |
| 1208 | /* Couldn't find __contains__. */ |
| 1209 | if (PyErr_ExceptionMatches(PyExc_AttributeError)) { |
| 1210 | /* Assume the failure was simply due to that there is no |
| 1211 | * __contains__ attribute, and try iterating instead. |
| 1212 | */ |
| 1213 | PyErr_Clear(); |
| 1214 | return _PySequence_IterContains((PyObject *)inst, member); |
| 1215 | } |
| 1216 | else |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1217 | return -1; |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1218 | } |
| 1219 | |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1220 | static PySequenceMethods |
| 1221 | instance_as_sequence = { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1222 | (inquiry)instance_length, /* sq_length */ |
| 1223 | 0, /* sq_concat */ |
| 1224 | 0, /* sq_repeat */ |
| 1225 | (intargfunc)instance_item, /* sq_item */ |
| 1226 | (intintargfunc)instance_slice, /* sq_slice */ |
| 1227 | (intobjargproc)instance_ass_item, /* sq_ass_item */ |
| 1228 | (intintobjargproc)instance_ass_slice, /* sq_ass_slice */ |
| 1229 | (objobjproc)instance_contains, /* sq_contains */ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1230 | }; |
| 1231 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1232 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1233 | generic_unary_op(PyInstanceObject *self, PyObject *methodname) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1234 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1235 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1236 | |
| 1237 | if ((func = instance_getattr(self, methodname)) == NULL) |
| 1238 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1239 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1240 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1241 | return res; |
| 1242 | } |
| 1243 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1244 | static PyObject * |
| 1245 | generic_binary_op(PyObject *v, PyObject *w, char *opname) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1246 | { |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1247 | PyObject *result; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1248 | PyObject *args; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1249 | PyObject *func = PyObject_GetAttrString(v, opname); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1250 | if (func == NULL) { |
Guido van Rossum | 617c1b0 | 1998-05-28 19:50:02 +0000 | [diff] [blame] | 1251 | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1252 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1253 | PyErr_Clear(); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1254 | Py_INCREF(Py_NotImplemented); |
| 1255 | return Py_NotImplemented; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1256 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1257 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1258 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1259 | Py_DECREF(func); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1260 | return NULL; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1261 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1262 | result = PyEval_CallObject(func, args); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1263 | Py_DECREF(args); |
| 1264 | Py_DECREF(func); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1265 | return result; |
| 1266 | } |
| 1267 | |
| 1268 | |
| 1269 | static PyObject *coerce_obj; |
| 1270 | |
| 1271 | /* Try one half of a binary operator involving a class instance. */ |
| 1272 | static PyObject * |
| 1273 | half_binop(PyObject *v, PyObject *w, char *opname, binaryfunc thisfunc, |
| 1274 | int swapped) |
| 1275 | { |
| 1276 | PyObject *args; |
| 1277 | PyObject *coercefunc; |
| 1278 | PyObject *coerced = NULL; |
| 1279 | PyObject *v1; |
| 1280 | PyObject *result; |
| 1281 | |
| 1282 | if (!PyInstance_Check(v)) { |
| 1283 | Py_INCREF(Py_NotImplemented); |
| 1284 | return Py_NotImplemented; |
| 1285 | } |
| 1286 | |
| 1287 | if (coerce_obj == NULL) { |
| 1288 | coerce_obj = PyString_InternFromString("__coerce__"); |
| 1289 | if (coerce_obj == NULL) |
| 1290 | return NULL; |
| 1291 | } |
| 1292 | coercefunc = PyObject_GetAttr(v, coerce_obj); |
| 1293 | if (coercefunc == NULL) { |
| 1294 | PyErr_Clear(); |
| 1295 | return generic_binary_op(v, w, opname); |
| 1296 | } |
| 1297 | |
| 1298 | args = Py_BuildValue("(O)", w); |
| 1299 | if (args == NULL) { |
| 1300 | return NULL; |
| 1301 | } |
| 1302 | coerced = PyEval_CallObject(coercefunc, args); |
| 1303 | Py_DECREF(args); |
| 1304 | Py_DECREF(coercefunc); |
| 1305 | if (coerced == NULL) { |
| 1306 | return NULL; |
| 1307 | } |
| 1308 | if (coerced == Py_None || coerced == Py_NotImplemented) { |
| 1309 | Py_DECREF(coerced); |
| 1310 | return generic_binary_op(v, w, opname); |
| 1311 | } |
| 1312 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
| 1313 | Py_DECREF(coerced); |
| 1314 | PyErr_SetString(PyExc_TypeError, |
| 1315 | "coercion should return None or 2-tuple"); |
| 1316 | return NULL; |
| 1317 | } |
| 1318 | v1 = PyTuple_GetItem(coerced, 0); |
| 1319 | w = PyTuple_GetItem(coerced, 1); |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1320 | if (v1->ob_type == v->ob_type && PyInstance_Check(v)) { |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1321 | /* prevent recursion if __coerce__ returns self as the first |
| 1322 | * argument */ |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1323 | result = generic_binary_op(v1, w, opname); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1324 | } else { |
| 1325 | if (swapped) |
| 1326 | result = (thisfunc)(w, v1); |
| 1327 | else |
| 1328 | result = (thisfunc)(v1, w); |
| 1329 | } |
| 1330 | Py_DECREF(coerced); |
| 1331 | return result; |
| 1332 | } |
| 1333 | |
| 1334 | /* Implement a binary operator involving at least one class instance. */ |
| 1335 | static PyObject * |
| 1336 | do_binop(PyObject *v, PyObject *w, char *opname, char *ropname, |
| 1337 | binaryfunc thisfunc) |
| 1338 | { |
| 1339 | PyObject *result = half_binop(v, w, opname, thisfunc, 0); |
| 1340 | if (result == Py_NotImplemented) { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1341 | Py_DECREF(result); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1342 | result = half_binop(w, v, ropname, thisfunc, 1); |
| 1343 | } |
| 1344 | return result; |
| 1345 | } |
| 1346 | |
| 1347 | static PyObject * |
| 1348 | do_binop_inplace(PyObject *v, PyObject *w, char *iopname, char *opname, |
| 1349 | char *ropname, binaryfunc thisfunc) |
| 1350 | { |
| 1351 | PyObject *result = half_binop(v, w, iopname, thisfunc, 0); |
| 1352 | if (result == Py_NotImplemented) { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1353 | Py_DECREF(result); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1354 | result = do_binop(v, w, opname, ropname, thisfunc); |
| 1355 | } |
| 1356 | return result; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1357 | } |
| 1358 | |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1359 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1360 | instance_coerce(PyObject **pv, PyObject **pw) |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1361 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1362 | PyObject *v = *pv; |
| 1363 | PyObject *w = *pw; |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1364 | PyObject *coercefunc; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1365 | PyObject *args; |
| 1366 | PyObject *coerced; |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1367 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1368 | if (coerce_obj == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1369 | coerce_obj = PyString_InternFromString("__coerce__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1370 | if (coerce_obj == NULL) |
| 1371 | return -1; |
| 1372 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1373 | coercefunc = PyObject_GetAttr(v, coerce_obj); |
| 1374 | if (coercefunc == NULL) { |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1375 | /* No __coerce__ method */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1376 | PyErr_Clear(); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1377 | return 1; |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1378 | } |
| 1379 | /* Has __coerce__ method: call it */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1380 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1381 | if (args == NULL) { |
| 1382 | return -1; |
| 1383 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1384 | coerced = PyEval_CallObject(coercefunc, args); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1385 | Py_DECREF(args); |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1386 | Py_DECREF(coercefunc); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1387 | if (coerced == NULL) { |
| 1388 | /* __coerce__ call raised an exception */ |
| 1389 | return -1; |
| 1390 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1391 | if (coerced == Py_None || coerced == Py_NotImplemented) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1392 | /* __coerce__ says "I can't do it" */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1393 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1394 | return 1; |
| 1395 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1396 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1397 | /* __coerce__ return value is malformed */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1398 | Py_DECREF(coerced); |
| 1399 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1400 | "coercion should return None or 2-tuple"); |
| 1401 | return -1; |
| 1402 | } |
| 1403 | /* __coerce__ returned two new values */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1404 | *pv = PyTuple_GetItem(coerced, 0); |
| 1405 | *pw = PyTuple_GetItem(coerced, 1); |
| 1406 | Py_INCREF(*pv); |
| 1407 | Py_INCREF(*pw); |
| 1408 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1409 | return 0; |
| 1410 | } |
| 1411 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1412 | #define UNARY(funcname, methodname) \ |
Thomas Wouters | c307352 | 2000-07-23 22:09:59 +0000 | [diff] [blame] | 1413 | static PyObject *funcname(PyInstanceObject *self) { \ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1414 | static PyObject *o; \ |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1415 | if (o == NULL) o = PyString_InternFromString(methodname); \ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1416 | return generic_unary_op(self, o); \ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1417 | } |
| 1418 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1419 | #define BINARY(f, m, n) \ |
| 1420 | static PyObject *f(PyObject *v, PyObject *w) { \ |
| 1421 | return do_binop(v, w, "__" m "__", "__r" m "__", n); \ |
| 1422 | } |
| 1423 | |
| 1424 | #define BINARY_INPLACE(f, m, n) \ |
| 1425 | static PyObject *f(PyObject *v, PyObject *w) { \ |
| 1426 | return do_binop_inplace(v, w, "__i" m "__", "__" m "__", \ |
| 1427 | "__r" m "__", n); \ |
| 1428 | } |
| 1429 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1430 | UNARY(instance_neg, "__neg__") |
| 1431 | UNARY(instance_pos, "__pos__") |
| 1432 | UNARY(instance_abs, "__abs__") |
| 1433 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1434 | BINARY(instance_or, "or", PyNumber_Or) |
| 1435 | BINARY(instance_and, "and", PyNumber_And) |
| 1436 | BINARY(instance_xor, "xor", PyNumber_Xor) |
| 1437 | BINARY(instance_lshift, "lshift", PyNumber_Lshift) |
| 1438 | BINARY(instance_rshift, "rshift", PyNumber_Rshift) |
| 1439 | BINARY(instance_add, "add", PyNumber_Add) |
| 1440 | BINARY(instance_sub, "sub", PyNumber_Subtract) |
| 1441 | BINARY(instance_mul, "mul", PyNumber_Multiply) |
| 1442 | BINARY(instance_div, "div", PyNumber_Divide) |
| 1443 | BINARY(instance_mod, "mod", PyNumber_Remainder) |
| 1444 | BINARY(instance_divmod, "divmod", PyNumber_Divmod) |
| 1445 | |
| 1446 | BINARY_INPLACE(instance_ior, "or", PyNumber_InPlaceOr) |
| 1447 | BINARY_INPLACE(instance_ixor, "xor", PyNumber_InPlaceXor) |
| 1448 | BINARY_INPLACE(instance_iand, "and", PyNumber_InPlaceAnd) |
| 1449 | BINARY_INPLACE(instance_ilshift, "lshift", PyNumber_InPlaceLshift) |
| 1450 | BINARY_INPLACE(instance_irshift, "rshift", PyNumber_InPlaceRshift) |
| 1451 | BINARY_INPLACE(instance_iadd, "add", PyNumber_InPlaceAdd) |
| 1452 | BINARY_INPLACE(instance_isub, "sub", PyNumber_InPlaceSubtract) |
| 1453 | BINARY_INPLACE(instance_imul, "mul", PyNumber_InPlaceMultiply) |
| 1454 | BINARY_INPLACE(instance_idiv, "div", PyNumber_InPlaceDivide) |
| 1455 | BINARY_INPLACE(instance_imod, "mod", PyNumber_InPlaceRemainder) |
| 1456 | |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1457 | /* Try a 3-way comparison, returning an int; v is an instance. Return: |
| 1458 | -2 for an exception; |
| 1459 | -1 if v < w; |
| 1460 | 0 if v == w; |
| 1461 | 1 if v > w; |
| 1462 | 2 if this particular 3-way comparison is not implemented or undefined. |
| 1463 | */ |
| 1464 | static int |
| 1465 | half_cmp(PyObject *v, PyObject *w) |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1466 | { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1467 | static PyObject *cmp_obj; |
| 1468 | PyObject *args; |
Guido van Rossum | 3202c6f | 2001-01-29 23:50:25 +0000 | [diff] [blame] | 1469 | PyObject *cmp_func; |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1470 | PyObject *result; |
| 1471 | long l; |
| 1472 | |
| 1473 | assert(PyInstance_Check(v)); |
| 1474 | |
| 1475 | if (cmp_obj == NULL) { |
| 1476 | cmp_obj = PyString_InternFromString("__cmp__"); |
| 1477 | if (cmp_obj == NULL) |
| 1478 | return -2; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1479 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1480 | |
Guido van Rossum | 3202c6f | 2001-01-29 23:50:25 +0000 | [diff] [blame] | 1481 | cmp_func = PyObject_GetAttr(v, cmp_obj); |
| 1482 | if (cmp_func == NULL) { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1483 | PyErr_Clear(); |
| 1484 | return 2; |
| 1485 | } |
| 1486 | |
| 1487 | args = Py_BuildValue("(O)", w); |
| 1488 | if (args == NULL) |
| 1489 | return -2; |
| 1490 | |
Guido van Rossum | 3202c6f | 2001-01-29 23:50:25 +0000 | [diff] [blame] | 1491 | result = PyEval_CallObject(cmp_func, args); |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1492 | Py_DECREF(args); |
Guido van Rossum | 3202c6f | 2001-01-29 23:50:25 +0000 | [diff] [blame] | 1493 | Py_DECREF(cmp_func); |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1494 | |
| 1495 | if (result == NULL) |
| 1496 | return -2; |
| 1497 | |
| 1498 | if (result == Py_NotImplemented) { |
| 1499 | Py_DECREF(result); |
| 1500 | return 2; |
| 1501 | } |
| 1502 | |
| 1503 | l = PyInt_AsLong(result); |
| 1504 | Py_DECREF(result); |
| 1505 | if (l == -1 && PyErr_Occurred()) { |
| 1506 | PyErr_SetString(PyExc_TypeError, |
| 1507 | "comparison did not return an int"); |
| 1508 | return -2; |
| 1509 | } |
| 1510 | |
| 1511 | return l < 0 ? -1 : l > 0 ? 1 : 0; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1512 | } |
| 1513 | |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1514 | /* Try a 3-way comparison, returning an int; either v or w is an instance. |
| 1515 | We first try a coercion. Return: |
| 1516 | -2 for an exception; |
| 1517 | -1 if v < w; |
| 1518 | 0 if v == w; |
| 1519 | 1 if v > w; |
| 1520 | 2 if this particular 3-way comparison is not implemented or undefined. |
| 1521 | THIS IS ONLY CALLED FROM object.c! |
| 1522 | */ |
| 1523 | static int |
| 1524 | instance_compare(PyObject *v, PyObject *w) |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1525 | { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1526 | int c; |
| 1527 | |
| 1528 | c = PyNumber_CoerceEx(&v, &w); |
| 1529 | if (c < 0) |
| 1530 | return -2; |
| 1531 | if (c == 0) { |
| 1532 | /* If neither is now an instance, use regular comparison */ |
| 1533 | if (!PyInstance_Check(v) && !PyInstance_Check(w)) { |
| 1534 | c = PyObject_Compare(v, w); |
| 1535 | Py_DECREF(v); |
| 1536 | Py_DECREF(w); |
| 1537 | if (PyErr_Occurred()) |
| 1538 | return -2; |
| 1539 | return c < 0 ? -1 : c > 0 ? 1 : 0; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1540 | } |
| 1541 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1542 | else { |
| 1543 | /* The coercion didn't do anything. |
| 1544 | Treat this the same as returning v and w unchanged. */ |
| 1545 | Py_INCREF(v); |
| 1546 | Py_INCREF(w); |
| 1547 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1548 | |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1549 | if (PyInstance_Check(v)) { |
| 1550 | c = half_cmp(v, w); |
| 1551 | if (c <= 1) { |
| 1552 | Py_DECREF(v); |
| 1553 | Py_DECREF(w); |
| 1554 | return c; |
| 1555 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1556 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1557 | if (PyInstance_Check(w)) { |
| 1558 | c = half_cmp(w, v); |
| 1559 | if (c <= 1) { |
| 1560 | Py_DECREF(v); |
| 1561 | Py_DECREF(w); |
| 1562 | if (c >= -1) |
| 1563 | c = -c; |
| 1564 | return c; |
| 1565 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1566 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1567 | Py_DECREF(v); |
| 1568 | Py_DECREF(w); |
| 1569 | return 2; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1570 | } |
| 1571 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1572 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1573 | instance_nonzero(PyInstanceObject *self) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1574 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1575 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1576 | long outcome; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1577 | static PyObject *nonzerostr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1578 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1579 | if (nonzerostr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1580 | nonzerostr = PyString_InternFromString("__nonzero__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1581 | if ((func = instance_getattr(self, nonzerostr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1582 | PyErr_Clear(); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1583 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1584 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1585 | if ((func = instance_getattr(self, lenstr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1586 | PyErr_Clear(); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1587 | /* Fall back to the default behavior: |
| 1588 | all instances are nonzero */ |
| 1589 | return 1; |
| 1590 | } |
| 1591 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1592 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1593 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1594 | if (res == NULL) |
| 1595 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1596 | if (!PyInt_Check(res)) { |
| 1597 | Py_DECREF(res); |
| 1598 | PyErr_SetString(PyExc_TypeError, |
| 1599 | "__nonzero__ should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1600 | return -1; |
| 1601 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1602 | outcome = PyInt_AsLong(res); |
| 1603 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1604 | if (outcome < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1605 | PyErr_SetString(PyExc_ValueError, |
| 1606 | "__nonzero__ should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1607 | return -1; |
| 1608 | } |
| 1609 | return outcome > 0; |
| 1610 | } |
| 1611 | |
| 1612 | UNARY(instance_invert, "__invert__") |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 1613 | UNARY(instance_int, "__int__") |
| 1614 | UNARY(instance_long, "__long__") |
| 1615 | UNARY(instance_float, "__float__") |
| 1616 | UNARY(instance_oct, "__oct__") |
| 1617 | UNARY(instance_hex, "__hex__") |
| 1618 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1619 | static PyObject * |
| 1620 | bin_power(PyObject *v, PyObject *w) |
| 1621 | { |
| 1622 | return PyNumber_Power(v, w, Py_None); |
| 1623 | } |
| 1624 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1625 | /* This version is for ternary calls only (z != None) */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1626 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1627 | instance_pow(PyObject *v, PyObject *w, PyObject *z) |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1628 | { |
| 1629 | if (z == Py_None) { |
| 1630 | return do_binop(v, w, "__pow__", "__rpow__", bin_power); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1631 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1632 | else { |
| 1633 | PyObject *func; |
| 1634 | PyObject *args; |
| 1635 | PyObject *result; |
| 1636 | |
| 1637 | /* XXX Doesn't do coercions... */ |
| 1638 | func = PyObject_GetAttrString(v, "__pow__"); |
| 1639 | if (func == NULL) |
| 1640 | return NULL; |
| 1641 | args = Py_BuildValue("(OO)", w, z); |
| 1642 | if (args == NULL) { |
| 1643 | Py_DECREF(func); |
| 1644 | return NULL; |
| 1645 | } |
| 1646 | result = PyEval_CallObject(func, args); |
| 1647 | Py_DECREF(func); |
| 1648 | Py_DECREF(args); |
| 1649 | return result; |
| 1650 | } |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1651 | } |
| 1652 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1653 | static PyObject * |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1654 | bin_inplace_power(PyObject *v, PyObject *w) |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1655 | { |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1656 | return PyNumber_InPlacePower(v, w, Py_None); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1657 | } |
| 1658 | |
| 1659 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1660 | static PyObject * |
| 1661 | instance_ipow(PyObject *v, PyObject *w, PyObject *z) |
| 1662 | { |
| 1663 | if (z == Py_None) { |
| 1664 | return do_binop_inplace(v, w, "__ipow__", "__pow__", |
| 1665 | "__rpow__", bin_inplace_power); |
| 1666 | } |
| 1667 | else { |
| 1668 | /* XXX Doesn't do coercions... */ |
| 1669 | PyObject *func; |
| 1670 | PyObject *args; |
| 1671 | PyObject *result; |
| 1672 | |
| 1673 | func = PyObject_GetAttrString(v, "__ipow__"); |
| 1674 | if (func == NULL) { |
| 1675 | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1676 | return NULL; |
| 1677 | PyErr_Clear(); |
| 1678 | return instance_pow(v, w, z); |
| 1679 | } |
| 1680 | args = Py_BuildValue("(OO)", w, z); |
| 1681 | if (args == NULL) { |
| 1682 | Py_DECREF(func); |
| 1683 | return NULL; |
| 1684 | } |
| 1685 | result = PyEval_CallObject(func, args); |
| 1686 | Py_DECREF(func); |
| 1687 | Py_DECREF(args); |
| 1688 | return result; |
| 1689 | } |
| 1690 | } |
| 1691 | |
| 1692 | |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1693 | /* Map rich comparison operators to their __xx__ namesakes */ |
Jeremy Hylton | 1b0feb4 | 2001-05-11 14:48:41 +0000 | [diff] [blame] | 1694 | #define NAME_OPS 6 |
| 1695 | static PyObject **name_op = NULL; |
| 1696 | |
| 1697 | static int |
Guido van Rossum | 0ba9e3a | 2001-05-22 02:33:08 +0000 | [diff] [blame] | 1698 | init_name_op(void) |
Jeremy Hylton | 1b0feb4 | 2001-05-11 14:48:41 +0000 | [diff] [blame] | 1699 | { |
| 1700 | int i; |
| 1701 | char *_name_op[] = { |
| 1702 | "__lt__", |
| 1703 | "__le__", |
| 1704 | "__eq__", |
| 1705 | "__ne__", |
| 1706 | "__gt__", |
| 1707 | "__ge__", |
| 1708 | }; |
| 1709 | |
| 1710 | name_op = (PyObject **)malloc(sizeof(PyObject *) * NAME_OPS); |
| 1711 | if (name_op == NULL) |
| 1712 | return -1; |
| 1713 | for (i = 0; i < NAME_OPS; ++i) { |
| 1714 | name_op[i] = PyString_InternFromString(_name_op[i]); |
| 1715 | if (name_op[i] == NULL) |
| 1716 | return -1; |
| 1717 | } |
| 1718 | return 0; |
| 1719 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1720 | |
| 1721 | static PyObject * |
| 1722 | half_richcompare(PyObject *v, PyObject *w, int op) |
| 1723 | { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1724 | PyObject *method; |
| 1725 | PyObject *args; |
| 1726 | PyObject *res; |
| 1727 | |
| 1728 | assert(PyInstance_Check(v)); |
| 1729 | |
Jeremy Hylton | 1b0feb4 | 2001-05-11 14:48:41 +0000 | [diff] [blame] | 1730 | if (name_op == NULL) { |
| 1731 | if (init_name_op() < 0) |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1732 | return NULL; |
Jeremy Hylton | 1b0feb4 | 2001-05-11 14:48:41 +0000 | [diff] [blame] | 1733 | } |
| 1734 | /* If the instance doesn't define an __getattr__ method, use |
| 1735 | instance_getattr2 directly because it will not set an |
| 1736 | exception on failure. */ |
| 1737 | if (((PyInstanceObject *)v)->in_class->cl_getattr == NULL) { |
| 1738 | method = instance_getattr2((PyInstanceObject *)v, |
| 1739 | name_op[op]); |
| 1740 | if (method == NULL) { |
| 1741 | assert(!PyErr_Occurred()); |
| 1742 | res = Py_NotImplemented; |
| 1743 | Py_INCREF(res); |
| 1744 | return res; |
| 1745 | } |
| 1746 | } else { |
| 1747 | method = PyObject_GetAttr(v, name_op[op]); |
| 1748 | if (method == NULL) { |
| 1749 | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1750 | return NULL; |
| 1751 | PyErr_Clear(); |
| 1752 | res = Py_NotImplemented; |
| 1753 | Py_INCREF(res); |
| 1754 | return res; |
| 1755 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1756 | } |
| 1757 | |
| 1758 | args = Py_BuildValue("(O)", w); |
| 1759 | if (args == NULL) { |
| 1760 | Py_DECREF(method); |
| 1761 | return NULL; |
| 1762 | } |
| 1763 | |
| 1764 | res = PyEval_CallObject(method, args); |
| 1765 | Py_DECREF(args); |
| 1766 | Py_DECREF(method); |
| 1767 | |
| 1768 | return res; |
| 1769 | } |
| 1770 | |
| 1771 | /* Map rich comparison operators to their swapped version, e.g. LT --> GT */ |
| 1772 | static int swapped_op[] = {Py_GT, Py_GE, Py_EQ, Py_NE, Py_LT, Py_LE}; |
| 1773 | |
| 1774 | static PyObject * |
| 1775 | instance_richcompare(PyObject *v, PyObject *w, int op) |
| 1776 | { |
| 1777 | PyObject *res; |
| 1778 | |
| 1779 | if (PyInstance_Check(v)) { |
| 1780 | res = half_richcompare(v, w, op); |
| 1781 | if (res != Py_NotImplemented) |
| 1782 | return res; |
| 1783 | Py_DECREF(res); |
| 1784 | } |
| 1785 | |
| 1786 | if (PyInstance_Check(w)) { |
| 1787 | res = half_richcompare(w, v, swapped_op[op]); |
| 1788 | if (res != Py_NotImplemented) |
| 1789 | return res; |
| 1790 | Py_DECREF(res); |
| 1791 | } |
| 1792 | |
| 1793 | Py_INCREF(Py_NotImplemented); |
| 1794 | return Py_NotImplemented; |
| 1795 | } |
| 1796 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1797 | |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1798 | /* Get the iterator */ |
| 1799 | static PyObject * |
| 1800 | instance_getiter(PyInstanceObject *self) |
| 1801 | { |
| 1802 | PyObject *func; |
| 1803 | |
| 1804 | if (iterstr == NULL) |
| 1805 | iterstr = PyString_InternFromString("__iter__"); |
| 1806 | if (getitemstr == NULL) |
| 1807 | getitemstr = PyString_InternFromString("__getitem__"); |
| 1808 | |
| 1809 | if ((func = instance_getattr(self, iterstr)) != NULL) { |
| 1810 | PyObject *res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1811 | Py_DECREF(func); |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 1812 | if (res != NULL && !PyIter_Check(res)) { |
| 1813 | PyErr_Format(PyExc_TypeError, |
| 1814 | "__iter__ returned non-iterator " |
| 1815 | "of type '%.100s'", |
| 1816 | res->ob_type->tp_name); |
| 1817 | Py_DECREF(res); |
| 1818 | res = NULL; |
| 1819 | } |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1820 | return res; |
| 1821 | } |
| 1822 | PyErr_Clear(); |
| 1823 | if ((func = instance_getattr(self, getitemstr)) == NULL) { |
| 1824 | PyErr_SetString(PyExc_TypeError, "iter() of non-sequence"); |
| 1825 | return NULL; |
| 1826 | } |
| 1827 | Py_DECREF(func); |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 1828 | return PySeqIter_New((PyObject *)self); |
| 1829 | } |
| 1830 | |
| 1831 | |
| 1832 | /* Call the iterator's next */ |
| 1833 | static PyObject * |
| 1834 | instance_iternext(PyInstanceObject *self) |
| 1835 | { |
| 1836 | PyObject *func; |
| 1837 | |
| 1838 | if (nextstr == NULL) |
| 1839 | nextstr = PyString_InternFromString("next"); |
| 1840 | |
| 1841 | if ((func = instance_getattr(self, nextstr)) != NULL) { |
| 1842 | PyObject *res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1843 | Py_DECREF(func); |
| 1844 | if (res != NULL) { |
| 1845 | return res; |
| 1846 | } |
| 1847 | if (PyErr_ExceptionMatches(PyExc_StopIteration)) { |
| 1848 | PyErr_Clear(); |
| 1849 | return NULL; |
| 1850 | } |
| 1851 | return NULL; |
| 1852 | } |
| 1853 | PyErr_SetString(PyExc_TypeError, "instance has no next() method"); |
| 1854 | return NULL; |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1855 | } |
| 1856 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 1857 | static PyObject * |
| 1858 | instance_call(PyObject *func, PyObject *arg, PyObject *kw) |
| 1859 | { |
| 1860 | PyObject *res, *call = PyObject_GetAttrString(func, "__call__"); |
| 1861 | if (call == NULL) { |
| 1862 | PyInstanceObject *inst = (PyInstanceObject*) func; |
| 1863 | PyErr_Clear(); |
| 1864 | PyErr_Format(PyExc_AttributeError, |
| 1865 | "%.200s instance has no __call__ method", |
| 1866 | PyString_AsString(inst->in_class->cl_name)); |
| 1867 | return NULL; |
| 1868 | } |
| 1869 | res = PyObject_Call(call, arg, kw); |
| 1870 | Py_DECREF(call); |
| 1871 | return res; |
| 1872 | } |
| 1873 | |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1874 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1875 | static PyNumberMethods instance_as_number = { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1876 | (binaryfunc)instance_add, /* nb_add */ |
| 1877 | (binaryfunc)instance_sub, /* nb_subtract */ |
| 1878 | (binaryfunc)instance_mul, /* nb_multiply */ |
| 1879 | (binaryfunc)instance_div, /* nb_divide */ |
| 1880 | (binaryfunc)instance_mod, /* nb_remainder */ |
| 1881 | (binaryfunc)instance_divmod, /* nb_divmod */ |
| 1882 | (ternaryfunc)instance_pow, /* nb_power */ |
| 1883 | (unaryfunc)instance_neg, /* nb_negative */ |
| 1884 | (unaryfunc)instance_pos, /* nb_positive */ |
| 1885 | (unaryfunc)instance_abs, /* nb_absolute */ |
| 1886 | (inquiry)instance_nonzero, /* nb_nonzero */ |
| 1887 | (unaryfunc)instance_invert, /* nb_invert */ |
| 1888 | (binaryfunc)instance_lshift, /* nb_lshift */ |
| 1889 | (binaryfunc)instance_rshift, /* nb_rshift */ |
| 1890 | (binaryfunc)instance_and, /* nb_and */ |
| 1891 | (binaryfunc)instance_xor, /* nb_xor */ |
| 1892 | (binaryfunc)instance_or, /* nb_or */ |
| 1893 | (coercion)instance_coerce, /* nb_coerce */ |
| 1894 | (unaryfunc)instance_int, /* nb_int */ |
| 1895 | (unaryfunc)instance_long, /* nb_long */ |
| 1896 | (unaryfunc)instance_float, /* nb_float */ |
| 1897 | (unaryfunc)instance_oct, /* nb_oct */ |
| 1898 | (unaryfunc)instance_hex, /* nb_hex */ |
| 1899 | (binaryfunc)instance_iadd, /* nb_inplace_add */ |
| 1900 | (binaryfunc)instance_isub, /* nb_inplace_subtract */ |
| 1901 | (binaryfunc)instance_imul, /* nb_inplace_multiply */ |
| 1902 | (binaryfunc)instance_idiv, /* nb_inplace_divide */ |
| 1903 | (binaryfunc)instance_imod, /* nb_inplace_remainder */ |
| 1904 | (ternaryfunc)instance_ipow, /* nb_inplace_power */ |
| 1905 | (binaryfunc)instance_ilshift, /* nb_inplace_lshift */ |
| 1906 | (binaryfunc)instance_irshift, /* nb_inplace_rshift */ |
| 1907 | (binaryfunc)instance_iand, /* nb_inplace_and */ |
| 1908 | (binaryfunc)instance_ixor, /* nb_inplace_xor */ |
| 1909 | (binaryfunc)instance_ior, /* nb_inplace_or */ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1910 | }; |
| 1911 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1912 | PyTypeObject PyInstance_Type = { |
| 1913 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1914 | 0, |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 1915 | "instance", |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1916 | sizeof(PyInstanceObject) + PyGC_HEAD_SIZE, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1917 | 0, |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1918 | (destructor)instance_dealloc, /* tp_dealloc */ |
| 1919 | 0, /* tp_print */ |
| 1920 | 0, /* tp_getattr */ |
| 1921 | 0, /* tp_setattr */ |
| 1922 | instance_compare, /* tp_compare */ |
| 1923 | (reprfunc)instance_repr, /* tp_repr */ |
| 1924 | &instance_as_number, /* tp_as_number */ |
| 1925 | &instance_as_sequence, /* tp_as_sequence */ |
| 1926 | &instance_as_mapping, /* tp_as_mapping */ |
| 1927 | (hashfunc)instance_hash, /* tp_hash */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 1928 | instance_call, /* tp_call */ |
Guido van Rossum | 82c690f | 2001-04-30 14:39:18 +0000 | [diff] [blame] | 1929 | (reprfunc)instance_str, /* tp_str */ |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1930 | (getattrofunc)instance_getattr, /* tp_getattro */ |
| 1931 | (setattrofunc)instance_setattr, /* tp_setattro */ |
| 1932 | 0, /* tp_as_buffer */ |
| 1933 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC | Py_TPFLAGS_CHECKTYPES,/*tp_flags*/ |
| 1934 | 0, /* tp_doc */ |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 1935 | (traverseproc)instance_traverse, /* tp_traverse */ |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1936 | 0, /* tp_clear */ |
| 1937 | instance_richcompare, /* tp_richcompare */ |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1938 | offsetof(PyInstanceObject, in_weakreflist), /* tp_weaklistoffset */ |
| 1939 | (getiterfunc)instance_getiter, /* tp_iter */ |
Guido van Rossum | 213c7a6 | 2001-04-23 14:08:49 +0000 | [diff] [blame] | 1940 | (iternextfunc)instance_iternext, /* tp_iternext */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1941 | }; |
| 1942 | |
| 1943 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1944 | /* Instance method objects are used for two purposes: |
| 1945 | (a) as bound instance methods (returned by instancename.methodname) |
| 1946 | (b) as unbound methods (returned by ClassName.methodname) |
| 1947 | In case (b), im_self is NULL |
| 1948 | */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1949 | |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1950 | static PyMethodObject *free_list; |
| 1951 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1952 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1953 | PyMethod_New(PyObject *func, PyObject *self, PyObject *class) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1954 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1955 | register PyMethodObject *im; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1956 | if (!PyCallable_Check(func)) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1957 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1958 | return NULL; |
| 1959 | } |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1960 | im = free_list; |
| 1961 | if (im != NULL) { |
| 1962 | free_list = (PyMethodObject *)(im->im_self); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 1963 | PyObject_INIT(im, &PyMethod_Type); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1964 | } |
| 1965 | else { |
| 1966 | im = PyObject_NEW(PyMethodObject, &PyMethod_Type); |
| 1967 | if (im == NULL) |
| 1968 | return NULL; |
| 1969 | } |
Fred Drake | db81e8d | 2001-03-23 04:19:27 +0000 | [diff] [blame] | 1970 | im->im_weakreflist = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1971 | Py_INCREF(func); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1972 | im->im_func = func; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1973 | Py_XINCREF(self); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1974 | im->im_self = self; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1975 | Py_INCREF(class); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1976 | im->im_class = class; |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1977 | PyObject_GC_Init(im); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1978 | return (PyObject *)im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1979 | } |
| 1980 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1981 | /* Class method methods */ |
| 1982 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1983 | #define OFF(x) offsetof(PyMethodObject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1984 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1985 | static struct memberlist instancemethod_memberlist[] = { |
| 1986 | {"im_func", T_OBJECT, OFF(im_func)}, |
| 1987 | {"im_self", T_OBJECT, OFF(im_self)}, |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1988 | {"im_class", T_OBJECT, OFF(im_class)}, |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1989 | /* Dummies that are not handled by getattr() except for __members__ */ |
| 1990 | {"__doc__", T_INT, 0}, |
| 1991 | {"__name__", T_INT, 0}, |
Barry Warsaw | d6a9e84 | 2001-01-15 20:40:19 +0000 | [diff] [blame] | 1992 | {"__dict__", T_OBJECT, 0}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1993 | {NULL} /* Sentinel */ |
| 1994 | }; |
| 1995 | |
Barry Warsaw | d6a9e84 | 2001-01-15 20:40:19 +0000 | [diff] [blame] | 1996 | static int |
| 1997 | instancemethod_setattro(register PyMethodObject *im, PyObject *name, |
| 1998 | PyObject *v) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1999 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2000 | char *sname = PyString_AsString(name); |
Barry Warsaw | d6a9e84 | 2001-01-15 20:40:19 +0000 | [diff] [blame] | 2001 | |
Barry Warsaw | 4f9b13b | 2001-02-26 18:09:15 +0000 | [diff] [blame] | 2002 | PyErr_Format(PyExc_TypeError, "read-only attribute: %s", sname); |
| 2003 | return -1; |
Barry Warsaw | d6a9e84 | 2001-01-15 20:40:19 +0000 | [diff] [blame] | 2004 | } |
| 2005 | |
| 2006 | |
| 2007 | static PyObject * |
| 2008 | instancemethod_getattro(register PyMethodObject *im, PyObject *name) |
| 2009 | { |
| 2010 | PyObject *rtn; |
| 2011 | char *sname = PyString_AsString(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 2012 | if (sname[0] == '_') { |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 2013 | /* Inherit __name__ and __doc__ from the callable object |
| 2014 | implementing the method */ |
| 2015 | if (strcmp(sname, "__name__") == 0 || |
| 2016 | strcmp(sname, "__doc__") == 0) |
| 2017 | return PyObject_GetAttr(im->im_func, name); |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 2018 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2019 | if (PyEval_GetRestricted()) { |
| 2020 | PyErr_SetString(PyExc_RuntimeError, |
| 2021 | "instance-method attributes not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 2022 | return NULL; |
| 2023 | } |
Barry Warsaw | d6a9e84 | 2001-01-15 20:40:19 +0000 | [diff] [blame] | 2024 | if (sname[0] == '_' && strcmp(sname, "__dict__") == 0) |
| 2025 | return PyObject_GetAttr(im->im_func, name); |
| 2026 | |
| 2027 | rtn = PyMember_Get((char *)im, instancemethod_memberlist, sname); |
| 2028 | if (rtn == NULL && PyErr_ExceptionMatches(PyExc_AttributeError)) { |
| 2029 | PyErr_Clear(); |
| 2030 | rtn = PyObject_GetAttr(im->im_func, name); |
| 2031 | } |
| 2032 | return rtn; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2033 | } |
| 2034 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2035 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2036 | instancemethod_dealloc(register PyMethodObject *im) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2037 | { |
Fred Drake | db81e8d | 2001-03-23 04:19:27 +0000 | [diff] [blame] | 2038 | PyObject_ClearWeakRefs((PyObject *)im); |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 2039 | PyObject_GC_Fini(im); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2040 | Py_DECREF(im->im_func); |
| 2041 | Py_XDECREF(im->im_self); |
| 2042 | Py_DECREF(im->im_class); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 2043 | im->im_self = (PyObject *)free_list; |
| 2044 | free_list = im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2045 | } |
| 2046 | |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 2047 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2048 | instancemethod_compare(PyMethodObject *a, PyMethodObject *b) |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 2049 | { |
Guido van Rossum | e9df727 | 1995-04-06 14:46:51 +0000 | [diff] [blame] | 2050 | if (a->im_self != b->im_self) |
| 2051 | return (a->im_self < b->im_self) ? -1 : 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2052 | return PyObject_Compare(a->im_func, b->im_func); |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 2053 | } |
| 2054 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2055 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2056 | instancemethod_repr(PyMethodObject *a) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 2057 | { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2058 | char buffer[240]; |
| 2059 | PyObject *self = a->im_self; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 2060 | PyObject *func = a->im_func; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2061 | PyObject *klass = a->im_class; |
| 2062 | PyObject *funcname = NULL, *klassname = NULL, *result = NULL; |
| 2063 | char *sfuncname = "?", *sklassname = "?"; |
| 2064 | |
| 2065 | funcname = PyObject_GetAttrString(func, "__name__"); |
| 2066 | if (funcname == NULL) |
| 2067 | PyErr_Clear(); |
| 2068 | else if (!PyString_Check(funcname)) { |
| 2069 | Py_DECREF(funcname); |
| 2070 | funcname = NULL; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 2071 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2072 | else |
| 2073 | sfuncname = PyString_AS_STRING(funcname); |
| 2074 | klassname = PyObject_GetAttrString(klass, "__name__"); |
| 2075 | if (klassname == NULL) |
| 2076 | PyErr_Clear(); |
| 2077 | else if (!PyString_Check(klassname)) { |
| 2078 | Py_DECREF(klassname); |
| 2079 | klassname = NULL; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 2080 | } |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 2081 | else |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2082 | sklassname = PyString_AS_STRING(klassname); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 2083 | if (self == NULL) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2084 | sprintf(buffer, "<unbound method %.100s.%.100s>", |
| 2085 | sklassname, sfuncname); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 2086 | else { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2087 | /* XXX Shouldn't use repr() here! */ |
| 2088 | PyObject *selfrepr = PyObject_Repr(self); |
| 2089 | if (selfrepr == NULL) |
| 2090 | goto fail; |
| 2091 | if (!PyString_Check(selfrepr)) { |
| 2092 | Py_DECREF(selfrepr); |
| 2093 | goto fail; |
| 2094 | } |
| 2095 | sprintf(buffer, "<bound method %.60s.%.60s of %.60s>", |
| 2096 | sklassname, sfuncname, PyString_AS_STRING(selfrepr)); |
| 2097 | Py_DECREF(selfrepr); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 2098 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2099 | result = PyString_FromString(buffer); |
| 2100 | fail: |
Guido van Rossum | 42636dc | 1999-10-11 14:03:12 +0000 | [diff] [blame] | 2101 | Py_XDECREF(funcname); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2102 | Py_XDECREF(klassname); |
| 2103 | return result; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 2104 | } |
| 2105 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 2106 | static long |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2107 | instancemethod_hash(PyMethodObject *a) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 2108 | { |
| 2109 | long x, y; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 2110 | if (a->im_self == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2111 | x = PyObject_Hash(Py_None); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 2112 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2113 | x = PyObject_Hash(a->im_self); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 2114 | if (x == -1) |
| 2115 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2116 | y = PyObject_Hash(a->im_func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 2117 | if (y == -1) |
| 2118 | return -1; |
| 2119 | return x ^ y; |
| 2120 | } |
| 2121 | |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 2122 | static int |
| 2123 | instancemethod_traverse(PyMethodObject *im, visitproc visit, void *arg) |
| 2124 | { |
| 2125 | int err; |
| 2126 | if (im->im_func) { |
| 2127 | err = visit(im->im_func, arg); |
| 2128 | if (err) |
| 2129 | return err; |
| 2130 | } |
| 2131 | if (im->im_self) { |
| 2132 | err = visit(im->im_self, arg); |
| 2133 | if (err) |
| 2134 | return err; |
| 2135 | } |
| 2136 | if (im->im_class) { |
| 2137 | err = visit(im->im_class, arg); |
| 2138 | if (err) |
| 2139 | return err; |
| 2140 | } |
Jeremy Hylton | d22162b | 2000-06-23 17:14:56 +0000 | [diff] [blame] | 2141 | return 0; |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 2142 | } |
| 2143 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2144 | static PyObject * |
| 2145 | instancemethod_call(PyObject *func, PyObject *arg, PyObject *kw) |
| 2146 | { |
| 2147 | PyObject *self = PyMethod_GET_SELF(func); |
| 2148 | PyObject *class = PyMethod_GET_CLASS(func); |
| 2149 | PyObject *result; |
| 2150 | |
| 2151 | func = PyMethod_GET_FUNCTION(func); |
| 2152 | if (self == NULL) { |
| 2153 | /* Unbound methods must be called with an instance of |
| 2154 | the class (or a derived class) as first argument */ |
| 2155 | int ok; |
| 2156 | if (PyTuple_Size(arg) >= 1) |
| 2157 | self = PyTuple_GET_ITEM(arg, 0); |
| 2158 | if (self == NULL) |
| 2159 | ok = 0; |
| 2160 | else { |
| 2161 | ok = PyObject_IsInstance(self, class); |
| 2162 | if (ok < 0) |
| 2163 | return NULL; |
| 2164 | } |
| 2165 | if (!ok) { |
| 2166 | PyErr_Format(PyExc_TypeError, |
| 2167 | "unbound method %s%s must be " |
| 2168 | "called with instance as first argument", |
| 2169 | PyEval_GetFuncName(func), |
| 2170 | PyEval_GetFuncDesc(func)); |
| 2171 | return NULL; |
| 2172 | } |
| 2173 | Py_INCREF(arg); |
| 2174 | } |
| 2175 | else { |
| 2176 | int argcount = PyTuple_Size(arg); |
| 2177 | PyObject *newarg = PyTuple_New(argcount + 1); |
| 2178 | int i; |
| 2179 | if (newarg == NULL) |
| 2180 | return NULL; |
| 2181 | Py_INCREF(self); |
| 2182 | PyTuple_SET_ITEM(newarg, 0, self); |
| 2183 | for (i = 0; i < argcount; i++) { |
| 2184 | PyObject *v = PyTuple_GET_ITEM(arg, i); |
| 2185 | Py_XINCREF(v); |
| 2186 | PyTuple_SET_ITEM(newarg, i+1, v); |
| 2187 | } |
| 2188 | arg = newarg; |
| 2189 | } |
| 2190 | result = PyObject_Call((PyObject *)func, arg, kw); |
| 2191 | Py_DECREF(arg); |
| 2192 | return result; |
| 2193 | } |
| 2194 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2195 | PyTypeObject PyMethod_Type = { |
| 2196 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2197 | 0, |
Guido van Rossum | 569fce7 | 1991-04-16 08:38:43 +0000 | [diff] [blame] | 2198 | "instance method", |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 2199 | sizeof(PyMethodObject) + PyGC_HEAD_SIZE, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2200 | 0, |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 2201 | (destructor)instancemethod_dealloc, /* tp_dealloc */ |
| 2202 | 0, /* tp_print */ |
| 2203 | 0, /* tp_getattr */ |
| 2204 | 0, /* tp_setattr */ |
| 2205 | (cmpfunc)instancemethod_compare, /* tp_compare */ |
| 2206 | (reprfunc)instancemethod_repr, /* tp_repr */ |
| 2207 | 0, /* tp_as_number */ |
| 2208 | 0, /* tp_as_sequence */ |
| 2209 | 0, /* tp_as_mapping */ |
| 2210 | (hashfunc)instancemethod_hash, /* tp_hash */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame^] | 2211 | instancemethod_call, /* tp_call */ |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 2212 | 0, /* tp_str */ |
| 2213 | (getattrofunc)instancemethod_getattro, /* tp_getattro */ |
| 2214 | (setattrofunc)instancemethod_setattro, /* tp_setattro */ |
| 2215 | 0, /* tp_as_buffer */ |
Fred Drake | 4dcb85b | 2001-05-03 16:04:13 +0000 | [diff] [blame] | 2216 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC, /* tp_flags */ |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 2217 | 0, /* tp_doc */ |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 2218 | (traverseproc)instancemethod_traverse, /* tp_traverse */ |
Fred Drake | db81e8d | 2001-03-23 04:19:27 +0000 | [diff] [blame] | 2219 | 0, /* tp_clear */ |
| 2220 | 0, /* tp_richcompare */ |
| 2221 | offsetof(PyMethodObject, im_weakreflist) /* tp_weaklistoffset */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2222 | }; |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 2223 | |
| 2224 | /* Clear out the free list */ |
| 2225 | |
| 2226 | void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2227 | PyMethod_Fini(void) |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 2228 | { |
| 2229 | while (free_list) { |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 2230 | PyMethodObject *im = free_list; |
| 2231 | free_list = (PyMethodObject *)(im->im_self); |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 2232 | im = (PyMethodObject *) PyObject_AS_GC(im); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 2233 | PyObject_DEL(im); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 2234 | } |
| 2235 | } |