Mercurial > cpython-lru_cache-weakref
annotate Objects/cellobject.c @ 44825:ef859cd754a7 legacy-trunk
Fixed a wrong assumption in configure.in and Include/pyport.h. The is finite function is not called isfinite() but finite(). Sorry, my fault. :)
| author | Christian Heimes <christian@cheimes.de> |
|---|---|
| date | Sun, 20 Jan 2008 14:28:28 +0000 |
| parents | 2183d72abfaa |
| children | 270fcd2e9782 |
| rev | line source |
|---|---|
| 16256 | 1 /* Cell object implementation */ |
| 2 | |
| 3 #include "Python.h" | |
| 4 | |
| 5 PyObject * | |
| 6 PyCell_New(PyObject *obj) | |
| 7 { | |
| 8 PyCellObject *op; | |
| 9 | |
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Use new GC API.
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10 op = (PyCellObject *)PyObject_GC_New(PyCellObject, &PyCell_Type); |
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Another problem reported by Coverity. Backport candidate.
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11 if (op == NULL) |
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Another problem reported by Coverity. Backport candidate.
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12 return NULL; |
| 16256 | 13 op->ob_ref = obj; |
| 14 Py_XINCREF(obj); | |
| 15 | |
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16 _PyObject_GC_TRACK(op); |
| 16256 | 17 return (PyObject *)op; |
| 18 } | |
| 19 | |
| 20 PyObject * | |
| 21 PyCell_Get(PyObject *op) | |
| 22 { | |
| 23 if (!PyCell_Check(op)) { | |
| 24 PyErr_BadInternalCall(); | |
| 25 return NULL; | |
| 26 } | |
| 27 Py_XINCREF(((PyCellObject*)op)->ob_ref); | |
| 28 return PyCell_GET(op); | |
| 29 } | |
| 30 | |
| 31 int | |
| 32 PyCell_Set(PyObject *op, PyObject *obj) | |
| 33 { | |
| 34 if (!PyCell_Check(op)) { | |
| 35 PyErr_BadInternalCall(); | |
| 36 return -1; | |
| 37 } | |
| 38 Py_XDECREF(((PyCellObject*)op)->ob_ref); | |
| 39 Py_XINCREF(obj); | |
| 40 PyCell_SET(op, obj); | |
| 41 return 0; | |
| 42 } | |
| 43 | |
| 44 static void | |
| 45 cell_dealloc(PyCellObject *op) | |
| 46 { | |
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parents:
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47 _PyObject_GC_UNTRACK(op); |
| 16256 | 48 Py_XDECREF(op->ob_ref); |
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49 PyObject_GC_Del(op); |
| 16256 | 50 } |
| 51 | |
| 52 static int | |
| 53 cell_compare(PyCellObject *a, PyCellObject *b) | |
| 54 { | |
| 55 if (a->ob_ref == NULL) { | |
| 56 if (b->ob_ref == NULL) | |
| 57 return 0; | |
| 58 return -1; | |
| 59 } else if (b->ob_ref == NULL) | |
| 60 return 1; | |
| 61 return PyObject_Compare(a->ob_ref, b->ob_ref); | |
| 62 } | |
| 63 | |
| 64 static PyObject * | |
| 65 cell_repr(PyCellObject *op) | |
| 66 { | |
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repr's converted to using PyString_FromFormat() instead of sprintf'ing
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67 if (op->ob_ref == NULL) |
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repr's converted to using PyString_FromFormat() instead of sprintf'ing
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68 return PyString_FromFormat("<cell at %p: empty>", op); |
| 16256 | 69 |
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70 return PyString_FromFormat("<cell at %p: %.80s object at %p>", |
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71 op, op->ob_ref->ob_type->tp_name, |
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repr's converted to using PyString_FromFormat() instead of sprintf'ing
Barry Warsaw <barry@python.org>
parents:
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72 op->ob_ref); |
| 16256 | 73 } |
| 74 | |
| 75 static int | |
| 76 cell_traverse(PyCellObject *op, visitproc visit, void *arg) | |
| 77 { | |
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Use Py_VISIT in all tp_traverse methods, instead of traversing manually or
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78 Py_VISIT(op->ob_ref); |
| 16256 | 79 return 0; |
| 80 } | |
| 81 | |
| 82 static int | |
| 83 cell_clear(PyCellObject *op) | |
| 84 { | |
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Use Py_CLEAR instead of in-place DECREF/XDECREF or custom macros, for
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85 Py_CLEAR(op->ob_ref); |
| 16256 | 86 return 0; |
| 87 } | |
| 88 | |
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Previously, Python code had no easy way to access the contents of a
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89 static PyObject * |
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90 cell_get_contents(PyCellObject *op, void *closure) |
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91 { |
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Issue #1445: Fix a SystemError when accessing the ``cell_contents``
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
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92 if (op->ob_ref == NULL) |
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2183d72abfaa
Issue #1445: Fix a SystemError when accessing the ``cell_contents``
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
42333
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93 { |
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2183d72abfaa
Issue #1445: Fix a SystemError when accessing the ``cell_contents``
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
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94 PyErr_SetString(PyExc_ValueError, "Cell is empty"); |
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2183d72abfaa
Issue #1445: Fix a SystemError when accessing the ``cell_contents``
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
42333
diff
changeset
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95 return NULL; |
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2183d72abfaa
Issue #1445: Fix a SystemError when accessing the ``cell_contents``
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
42333
diff
changeset
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96 } |
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2183d72abfaa
Issue #1445: Fix a SystemError when accessing the ``cell_contents``
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
42333
diff
changeset
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97 Py_INCREF(op->ob_ref); |
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Previously, Python code had no easy way to access the contents of a
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98 return op->ob_ref; |
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81d0e93208d9
Previously, Python code had no easy way to access the contents of a
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99 } |
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81d0e93208d9
Previously, Python code had no easy way to access the contents of a
Georg Brandl <georg@python.org>
parents:
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100 |
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101 static PyGetSetDef cell_getsetlist[] = { |
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102 {"cell_contents", (getter)cell_get_contents, NULL}, |
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103 {NULL} /* sentinel */ |
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104 }; |
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105 |
| 16256 | 106 PyTypeObject PyCell_Type = { |
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PEP 3123: Provide forward compatibility with Python 3.0, while keeping
Martin v. Löwis <martin@v.loewis.de>
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107 PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 16256 | 108 "cell", |
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Use new GC API.
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parents:
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109 sizeof(PyCellObject), |
| 16256 | 110 0, |
| 111 (destructor)cell_dealloc, /* tp_dealloc */ | |
| 112 0, /* tp_print */ | |
| 113 0, /* tp_getattr */ | |
| 114 0, /* tp_setattr */ | |
| 115 (cmpfunc)cell_compare, /* tp_compare */ | |
| 116 (reprfunc)cell_repr, /* tp_repr */ | |
| 117 0, /* tp_as_number */ | |
| 118 0, /* tp_as_sequence */ | |
| 119 0, /* tp_as_mapping */ | |
| 120 0, /* tp_hash */ | |
| 121 0, /* tp_call */ | |
| 122 0, /* tp_str */ | |
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Merge of descr-branch back into trunk.
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123 PyObject_GenericGetAttr, /* tp_getattro */ |
| 16256 | 124 0, /* tp_setattro */ |
| 125 0, /* tp_as_buffer */ | |
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126 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */ |
| 16256 | 127 0, /* tp_doc */ |
| 128 (traverseproc)cell_traverse, /* tp_traverse */ | |
| 129 (inquiry)cell_clear, /* tp_clear */ | |
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130 0, /* tp_richcompare */ |
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131 0, /* tp_weaklistoffset */ |
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132 0, /* tp_iter */ |
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133 0, /* tp_iternext */ |
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134 0, /* tp_methods */ |
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135 0, /* tp_members */ |
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136 cell_getsetlist, /* tp_getset */ |
| 16256 | 137 }; |