Mercurial > cpython-lru_cache-weakref

annotate Objects/funcobject.c @ 16413:8819867f14ef legacy-trunk

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Patch derived from Trent's 101162: a Python/C API testing framework. STILL NEEDS UNIX BUILD CHANGES.
author Tim Peters <tim.peters@gmail.com>
date Fri, 02 Feb 2001 05:57:15 +0000
parents abd383f1905c
children 51cf451faae4
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rev   line source
145
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1
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2 /* Function object implementation */
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3
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4 #include "Python.h"
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5 #include "compile.h"
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6 #include "structmember.h"
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7
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8 PyObject *
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9 PyFunction_New(PyObject *code, PyObject *globals)
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10 {
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11 PyFunctionObject *op = PyObject_NEW(PyFunctionObject,
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12 &PyFunction_Type);
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13 if (op != NULL) {
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14 PyObject *doc;
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15 PyObject *consts;
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16 Py_INCREF(code);
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17 op->func_code = code;
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18 Py_INCREF(globals);
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19 op->func_globals = globals;
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20 op->func_name = ((PyCodeObject *)code)->co_name;
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21 Py_INCREF(op->func_name);
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22 op->func_defaults = NULL; /* No default arguments */
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23 op->func_closure = NULL;
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24 consts = ((PyCodeObject *)code)->co_consts;
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25 if (PyTuple_Size(consts) >= 1) {
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26 doc = PyTuple_GetItem(consts, 0);
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27 if (!PyString_Check(doc) && !PyUnicode_Check(doc))
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28 doc = Py_None;
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29 }
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30 else
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31 doc = Py_None;
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32 Py_INCREF(doc);
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33 op->func_doc = doc;
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34 op->func_dict = NULL;
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35 }
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36 else
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37 return NULL;
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38 PyObject_GC_Init(op);
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39 return (PyObject *)op;
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40 }
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41
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42 PyObject *
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43 PyFunction_GetCode(PyObject *op)
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44 {
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45 if (!PyFunction_Check(op)) {
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46 PyErr_BadInternalCall();
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47 return NULL;
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48 }
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49 return ((PyFunctionObject *) op) -> func_code;
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50 }
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51
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52 PyObject *
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53 PyFunction_GetGlobals(PyObject *op)
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54 {
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55 if (!PyFunction_Check(op)) {
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56 PyErr_BadInternalCall();
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57 return NULL;
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58 }
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59 return ((PyFunctionObject *) op) -> func_globals;
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60 }
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61
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62 PyObject *
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63 PyFunction_GetDefaults(PyObject *op)
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64 {
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65 if (!PyFunction_Check(op)) {
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66 PyErr_BadInternalCall();
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67 return NULL;
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68 }
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69 return ((PyFunctionObject *) op) -> func_defaults;
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70 }
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71
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72 int
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73 PyFunction_SetDefaults(PyObject *op, PyObject *defaults)
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74 {
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75 if (!PyFunction_Check(op)) {
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76 PyErr_BadInternalCall();
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77 return -1;
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78 }
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79 if (defaults == Py_None)
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80 defaults = NULL;
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81 else if (PyTuple_Check(defaults)) {
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82 Py_XINCREF(defaults);
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83 }
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84 else {
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85 PyErr_SetString(PyExc_SystemError, "non-tuple default args");
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86 return -1;
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87 }
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88 Py_XDECREF(((PyFunctionObject *) op) -> func_defaults);
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89 ((PyFunctionObject *) op) -> func_defaults = defaults;
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90 return 0;
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91 }
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92
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93 PyObject *
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94 PyFunction_GetClosure(PyObject *op)
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95 {
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96 if (!PyFunction_Check(op)) {
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97 PyErr_BadInternalCall();
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98 return NULL;
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99 }
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100 return ((PyFunctionObject *) op) -> func_closure;
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101 }
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102
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103 int
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104 PyFunction_SetClosure(PyObject *op, PyObject *closure)
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105 {
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106 if (!PyFunction_Check(op)) {
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107 PyErr_BadInternalCall();
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108 return -1;
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109 }
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110 if (closure == Py_None)
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111 closure = NULL;
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112 else if (PyTuple_Check(closure)) {
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113 Py_XINCREF(closure);
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114 }
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115 else {
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116 PyErr_SetString(PyExc_SystemError, "non-tuple closure");
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117 return -1;
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118 }
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119 Py_XDECREF(((PyFunctionObject *) op) -> func_closure);
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120 ((PyFunctionObject *) op) -> func_closure = closure;
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121 return 0;
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122 }
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123
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124 /* Methods */
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125
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126 #define OFF(x) offsetof(PyFunctionObject, x)
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127
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128 static struct memberlist func_memberlist[] = {
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129 {"func_code", T_OBJECT, OFF(func_code)},
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130 {"func_globals", T_OBJECT, OFF(func_globals), READONLY},
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131 {"func_name", T_OBJECT, OFF(func_name), READONLY},
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132 {"__name__", T_OBJECT, OFF(func_name), READONLY},
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133 {"func_closure", T_OBJECT, OFF(func_closure)},
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134 {"func_defaults", T_OBJECT, OFF(func_defaults)},
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135 {"func_doc", T_OBJECT, OFF(func_doc)},
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136 {"__doc__", T_OBJECT, OFF(func_doc)},
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137 {"func_dict", T_OBJECT, OFF(func_dict)},
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138 {"__dict__", T_OBJECT, OFF(func_dict)},
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139 {NULL} /* Sentinel */
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140 };
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141
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142 static PyObject *
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143 func_getattro(PyFunctionObject *op, PyObject *name)
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144 {
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145 PyObject *rtn;
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146 char *sname = PyString_AsString(name);
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147
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148 if (sname[0] != '_' && PyEval_GetRestricted()) {
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149 PyErr_SetString(PyExc_RuntimeError,
2105
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diff changeset
150 "function attributes not accessible in restricted mode");
ea7b2bf0b521 add restrictions in restricted mode
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diff changeset
151 return NULL;
ea7b2bf0b521 add restrictions in restricted mode
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diff changeset
152 }
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153
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
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diff changeset
154 /* no API for PyMember_HasAttr() */
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diff changeset
155 rtn = PyMember_Get((char *)op, func_memberlist, sname);
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
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diff changeset
156
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
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diff changeset
157 if (rtn == NULL && PyErr_ExceptionMatches(PyExc_AttributeError)) {
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diff changeset
158 PyErr_Clear();
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parents: 14375
diff changeset
159 if (op->func_dict != NULL) {
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diff changeset
160 rtn = PyDict_GetItem(op->func_dict, name);
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diff changeset
161 Py_XINCREF(rtn);
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Barry Warsaw <barry@python.org>
parents: 14375
diff changeset
162 }
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
Barry Warsaw <barry@python.org>
parents: 14375
diff changeset
163 if (rtn == NULL)
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diff changeset
164 PyErr_SetObject(PyExc_AttributeError, name);
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165 }
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166 return rtn;
86
a6934380c6e7 "Compiling" version
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diff changeset
167 }
a6934380c6e7 "Compiling" version
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parents: 84
diff changeset
168
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169 static int
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170 func_setattro(PyFunctionObject *op, PyObject *name, PyObject *value)
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171 {
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172 int rtn;
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173 char *sname = PyString_AsString(name);
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174
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175 if (PyEval_GetRestricted()) {
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176 PyErr_SetString(PyExc_RuntimeError,
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177 "function attributes not settable in restricted mode");
096857b0e4b8 Make function objects somewhat mutable -- the members func_code,
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178 return -1;
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179 }
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180 if (strcmp(sname, "func_code") == 0) {
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181 /* not legal to del f.func_code or to set it to anything
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182 * other than a code object.
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183 */
8407
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184 if (value == NULL || !PyCode_Check(value)) {
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185 PyErr_SetString(
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diff changeset
186 PyExc_TypeError,
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187 "func_code must be set to a code object");
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188 return -1;
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diff changeset
189 }
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190 }
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191 else if (strcmp(sname, "func_defaults") == 0) {
16042
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192 /* legal to del f.func_defaults. Can only set
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193 * func_defaults to NULL or a tuple.
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Barry Warsaw <barry@python.org>
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diff changeset
194 */
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195 if (value == Py_None)
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196 value = NULL;
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197 if (value != NULL && !PyTuple_Check(value)) {
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diff changeset
198 PyErr_SetString(
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diff changeset
199 PyExc_TypeError,
096857b0e4b8 Make function objects somewhat mutable -- the members func_code,
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diff changeset
200 "func_defaults must be set to a tuple object");
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diff changeset
201 return -1;
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diff changeset
202 }
16042
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203 }
78bd97d8413c Application and elaboration of patch #103305 to fix core dumps when
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diff changeset
204 else if (!strcmp(sname, "func_dict") || !strcmp(sname, "__dict__")) {
78bd97d8413c Application and elaboration of patch #103305 to fix core dumps when
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205 /* legal to del f.func_dict. Can only set func_dict to
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diff changeset
206 * NULL or a dictionary.
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diff changeset
207 */
8407
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208 if (value == Py_None)
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diff changeset
209 value = NULL;
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diff changeset
210 if (value != NULL && !PyDict_Check(value)) {
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211 PyErr_SetString(
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diff changeset
212 PyExc_TypeError,
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213 "func_dict must be set to a dict object");
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diff changeset
214 return -1;
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diff changeset
215 }
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Barry Warsaw <barry@python.org>
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216 }
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Barry Warsaw <barry@python.org>
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diff changeset
217
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diff changeset
218 rtn = PyMember_Set((char *)op, func_memberlist, sname, value);
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diff changeset
219 if (rtn < 0 && PyErr_ExceptionMatches(PyExc_AttributeError)) {
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diff changeset
220 PyErr_Clear();
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diff changeset
221 if (op->func_dict == NULL) {
16042
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diff changeset
222 /* don't create the dict if we're deleting an
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parents: 15894
diff changeset
223 * attribute. In that case, we know we'll get an
78bd97d8413c Application and elaboration of patch #103305 to fix core dumps when
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diff changeset
224 * AttributeError.
78bd97d8413c Application and elaboration of patch #103305 to fix core dumps when
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diff changeset
225 */
78bd97d8413c Application and elaboration of patch #103305 to fix core dumps when
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diff changeset
226 if (value == NULL) {
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diff changeset
227 PyErr_SetString(PyExc_AttributeError, sname);
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diff changeset
228 return -1;
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parents: 15894
diff changeset
229 }
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diff changeset
230 op->func_dict = PyDict_New();
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Barry Warsaw <barry@python.org>
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diff changeset
231 if (op->func_dict == NULL)
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Barry Warsaw <barry@python.org>
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diff changeset
232 return -1;
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Barry Warsaw <barry@python.org>
parents: 14375
diff changeset
233 }
16042
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diff changeset
234 if (value == NULL)
78bd97d8413c Application and elaboration of patch #103305 to fix core dumps when
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diff changeset
235 rtn = PyDict_DelItem(op->func_dict, name);
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diff changeset
236 else
78bd97d8413c Application and elaboration of patch #103305 to fix core dumps when
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diff changeset
237 rtn = PyDict_SetItem(op->func_dict, name, value);
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diff changeset
238 /* transform KeyError into AttributeError */
78bd97d8413c Application and elaboration of patch #103305 to fix core dumps when
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parents: 15894
diff changeset
239 if (rtn < 0 && PyErr_ExceptionMatches(PyExc_KeyError))
78bd97d8413c Application and elaboration of patch #103305 to fix core dumps when
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diff changeset
240 PyErr_SetString(PyExc_AttributeError, sname);
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diff changeset
241 }
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Barry Warsaw <barry@python.org>
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diff changeset
242 return rtn;
8407
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diff changeset
243 }
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244
6
fc6fcd7df4f7 Initial revision
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245 static void
13457
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Fred Drake <fdrake@acm.org>
parents: 13265
diff changeset
246 func_dealloc(PyFunctionObject *op)
6
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
247 {
13183
54bffdddc0ef final patches from Neil Schemenauer for garbage collection
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 13141
diff changeset
248 PyObject_GC_Fini(op);
5396
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249 Py_DECREF(op->func_code);
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250 Py_DECREF(op->func_globals);
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diff changeset
251 Py_DECREF(op->func_name);
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diff changeset
252 Py_XDECREF(op->func_defaults);
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diff changeset
253 Py_XDECREF(op->func_doc);
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diff changeset
254 Py_XDECREF(op->func_dict);
13265
e8bb0d536633 Neil Schemenauer: small fixes for GC
Guido van Rossum <guido@python.org>
parents: 13256
diff changeset
255 op = (PyFunctionObject *) PyObject_AS_GC(op);
12576
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring.
Guido van Rossum <guido@python.org>
parents: 12512
diff changeset
256 PyObject_DEL(op);
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
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diff changeset
257 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
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diff changeset
258
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diff changeset
259 static PyObject*
13457
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Fred Drake <fdrake@acm.org>
parents: 13265
diff changeset
260 func_repr(PyFunctionObject *op)
1257
1cabc2b6c970 * Changed all copyright messages to include 1993.
Guido van Rossum <guido@python.org>
parents: 795
diff changeset
261 {
1cabc2b6c970 * Changed all copyright messages to include 1993.
Guido van Rossum <guido@python.org>
parents: 795
diff changeset
262 char buf[140];
5396
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parents: 4503
diff changeset
263 if (op->func_name == Py_None)
13210
ff243b0f16ee Trent Mick <trentm@activestate.com>:
Fred Drake <fdrake@acm.org>
parents: 13183
diff changeset
264 sprintf(buf, "<anonymous function at %p>", op);
1415
06570429f062 * import.c (get_module): pass .py filename to parse_file, not .pyc filename!
Guido van Rossum <guido@python.org>
parents: 1399
diff changeset
265 else
13210
ff243b0f16ee Trent Mick <trentm@activestate.com>:
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parents: 13183
diff changeset
266 sprintf(buf, "<function %.100s at %p>",
5396
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267 PyString_AsString(op->func_name),
13210
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parents: 13183
diff changeset
268 op);
5396
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diff changeset
269 return PyString_FromString(buf);
1257
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parents: 795
diff changeset
270 }
1cabc2b6c970 * Changed all copyright messages to include 1993.
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parents: 795
diff changeset
271
1399
cc172ce05561 Added compare operations for functions and code objects.
Guido van Rossum <guido@python.org>
parents: 1288
diff changeset
272 static int
12990
e615596c5c47 Round 1 of Neil Schemenauer's GC patches:
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parents: 12576
diff changeset
273 func_traverse(PyFunctionObject *f, visitproc visit, void *arg)
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diff changeset
274 {
e615596c5c47 Round 1 of Neil Schemenauer's GC patches:
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diff changeset
275 int err;
e615596c5c47 Round 1 of Neil Schemenauer's GC patches:
Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
276 if (f->func_code) {
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parents: 12576
diff changeset
277 err = visit(f->func_code, arg);
e615596c5c47 Round 1 of Neil Schemenauer's GC patches:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 12576
diff changeset
278 if (err)
e615596c5c47 Round 1 of Neil Schemenauer's GC patches:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 12576
diff changeset
279 return err;
e615596c5c47 Round 1 of Neil Schemenauer's GC patches:
Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
280 }
e615596c5c47 Round 1 of Neil Schemenauer's GC patches:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 12576
diff changeset
281 if (f->func_globals) {
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parents: 12576
diff changeset
282 err = visit(f->func_globals, arg);
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parents: 12576
diff changeset
283 if (err)
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284 return err;
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285 }
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286 if (f->func_defaults) {
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287 err = visit(f->func_defaults, arg);
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288 if (err)
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289 return err;
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290 }
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291 if (f->func_doc) {
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292 err = visit(f->func_doc, arg);
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293 if (err)
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294 return err;
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295 }
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296 if (f->func_name) {
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297 err = visit(f->func_name, arg);
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298 if (err)
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299 return err;
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300 }
15894
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
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diff changeset
301 if (f->func_dict) {
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
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diff changeset
302 err = visit(f->func_dict, arg);
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
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parents: 14375
diff changeset
303 if (err)
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
Barry Warsaw <barry@python.org>
parents: 14375
diff changeset
304 return err;
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
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parents: 14375
diff changeset
305 }
12990
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306 return 0;
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diff changeset
307 }
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diff changeset
308
5396
d1447950fa04 Quickly renamed the last directory.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
309 PyTypeObject PyFunction_Type = {
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diff changeset
310 PyObject_HEAD_INIT(&PyType_Type)
6
fc6fcd7df4f7 Initial revision
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311 0,
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312 "function",
13183
54bffdddc0ef final patches from Neil Schemenauer for garbage collection
Jeremy Hylton <jeremy@alum.mit.edu>
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313 sizeof(PyFunctionObject) + PyGC_HEAD_SIZE,
6
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314 0,
1848
b724599401ff Merge back to main trunk
Guido van Rossum <guido@python.org>
parents: 1415
diff changeset
315 (destructor)func_dealloc, /*tp_dealloc*/
84
a79cbb2655ba Function objects no longer contain a parse tree node, but intermediate
Guido van Rossum <guido@python.org>
parents: 27
diff changeset
316 0, /*tp_print*/
15894
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
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diff changeset
317 0, /*tp_getattr*/
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
Barry Warsaw <barry@python.org>
parents: 14375
diff changeset
318 0, /*tp_setattr*/
16328
abd383f1905c The one thing I love more then writing code is deleting code.
Moshe Zadka <moshez@math.huji.ac.il>
parents: 16257
diff changeset
319 0, /*tp_compare*/
1848
b724599401ff Merge back to main trunk
Guido van Rossum <guido@python.org>
parents: 1415
diff changeset
320 (reprfunc)func_repr, /*tp_repr*/
1399
cc172ce05561 Added compare operations for functions and code objects.
Guido van Rossum <guido@python.org>
parents: 1288
diff changeset
321 0, /*tp_as_number*/
cc172ce05561 Added compare operations for functions and code objects.
Guido van Rossum <guido@python.org>
parents: 1288
diff changeset
322 0, /*tp_as_sequence*/
cc172ce05561 Added compare operations for functions and code objects.
Guido van Rossum <guido@python.org>
parents: 1288
diff changeset
323 0, /*tp_as_mapping*/
16328
abd383f1905c The one thing I love more then writing code is deleting code.
Moshe Zadka <moshez@math.huji.ac.il>
parents: 16257
diff changeset
324 0, /*tp_hash*/
12990
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diff changeset
325 0, /*tp_call*/
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parents: 12576
diff changeset
326 0, /*tp_str*/
15894
1c6b0d3a58ea Committing PEP 232, function attribute feature, approved by Guido.
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parents: 14375
diff changeset
327 (getattrofunc)func_getattro, /*tp_getattro*/
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Barry Warsaw <barry@python.org>
parents: 14375
diff changeset
328 (setattrofunc)func_setattro, /*tp_setattro*/
12990
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diff changeset
329 0, /* tp_as_buffer */
12993
8f79c5b69e0a part 2 of Neil Schemenauer's GC patches:
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parents: 12990
diff changeset
330 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC, /*tp_flags*/
12990
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diff changeset
331 0, /* tp_doc */
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diff changeset
332 (traverseproc)func_traverse, /* tp_traverse */
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
333 };