Mercurial > cpython-lru_cache-weakref

annotate Modules/_weakref.c @ 16798:258dcafe2d0b legacy-trunk

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Gustavo Niemeyer <niemeyer@conectiva.com>: Fixed recno support (keys are integers rather than strings). Work around DB bug that cause stdin to be closed by rnopen() when the DB file needed to exist but did not (no longer segfaults). This closes SF tracker patch #403445. Also wrapped some long lines and added whitespace around operators -- FLD.
author Fred Drake <fdrake@acm.org>
date Tue, 27 Feb 2001 18:56:46 +0000
parents 29aa832b8787
children 0b8b6f8406dc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include "Python.h"
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2 #include "structmember.h"
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3
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4
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5 typedef struct _PyWeakReference PyWeakReference;
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6
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7 struct _PyWeakReference {
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8 PyObject_HEAD
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9 PyObject *wr_object;
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10 PyObject *wr_callback;
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11 long hash;
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12 PyWeakReference *wr_prev;
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13 PyWeakReference *wr_next;
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14 };
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15
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16
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17 #define GET_WEAKREFS_LISTPTR(o) \
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18 ((PyWeakReference **) PyObject_GET_WEAKREFS_LISTPTR(o))
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19
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20 static PyObject *
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21 ReferenceError;
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22
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23 static PyWeakReference *
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24 free_list = NULL;
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25
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26 staticforward PyTypeObject
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27 PyWeakReference_Type;
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28
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29 static PyWeakReference *
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30 new_weakref(void)
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31 {
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32 PyWeakReference *result;
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33
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34 if (free_list != NULL) {
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35 result = free_list;
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36 free_list = result->wr_next;
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37 result->ob_type = &PyWeakReference_Type;
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38 _Py_NewReference((PyObject *)result);
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39 }
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40 else {
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41 result = PyObject_NEW(PyWeakReference, &PyWeakReference_Type);
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42 }
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43 if (result)
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44 result->hash = -1;
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45 return result;
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46 }
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47
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48
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49 /* This function clears the passed-in reference and removes it from the
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50 * list of weak references for the referent. This is the only code that
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51 * removes an item from the doubly-linked list of weak references for an
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52 * object; it is also responsible for clearing the callback slot.
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53 */
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54 static void
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55 clear_weakref(PyWeakReference *self)
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56 {
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57 PyObject *callback = self->wr_callback;
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58
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59 if (self->wr_object != Py_None) {
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60 PyWeakReference **list = GET_WEAKREFS_LISTPTR(self->wr_object);
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61
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62 if (*list == self)
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63 *list = self->wr_next;
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64 self->wr_object = Py_None;
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65 self->wr_callback = NULL;
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66 if (self->wr_prev != NULL)
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67 self->wr_prev->wr_next = self->wr_next;
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68 if (self->wr_next != NULL)
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69 self->wr_next->wr_prev = self->wr_prev;
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70 self->wr_prev = NULL;
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71 self->wr_next = NULL;
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72 Py_XDECREF(callback);
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73 }
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74 }
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75
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76
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77 static void
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78 weakref_dealloc(PyWeakReference *self)
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79 {
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80 clear_weakref(self);
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81 PyObject_GC_Fini((PyObject *)self);
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82 self->wr_next = free_list;
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83 free_list = self;
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84 }
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85
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86
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87 static int
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88 gc_traverse(PyWeakReference *self, visitproc visit, void *arg)
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89 {
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90 if (self->wr_callback != NULL)
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91 return visit(self->wr_callback, arg);
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92 return 0;
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93 }
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94
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95
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96 static int
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97 gc_clear(PyWeakReference *self)
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98 {
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99 clear_weakref(self);
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100 return 0;
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101 }
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102
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103
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104 static PyObject *
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105 weakref_call(PyWeakReference *self, PyObject *args, PyObject *kw)
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106 {
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107 static char *argnames[] = {NULL};
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108
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109 if (PyArg_ParseTupleAndKeywords(args, kw, ":__call__", argnames)) {
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110 PyObject *object = self->wr_object;
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111 Py_INCREF(object);
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112 return (object);
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113 }
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114 return NULL;
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115 }
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116
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117
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118 static long
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119 weakref_hash(PyWeakReference *self)
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120 {
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121 if (self->hash != -1)
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122 return self->hash;
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123 if (self->wr_object == Py_None) {
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124 PyErr_SetString(PyExc_TypeError, "weak object has gone away");
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125 return -1;
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126 }
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127 self->hash = PyObject_Hash(self->wr_object);
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128 return self->hash;
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129 }
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130
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131
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132 static PyObject *
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133 weakref_repr(PyWeakReference *self)
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134 {
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135 char buffer[256];
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136 if (self->wr_object == Py_None) {
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137 sprintf(buffer, "<weakref at %lx; dead>",
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138 (long)(self));
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139 }
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140 else {
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141 sprintf(buffer, "<weakref at %#lx; to '%s' at %#lx>",
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142 (long)(self), self->wr_object->ob_type->tp_name,
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143 (long)(self->wr_object));
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144 }
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145 return PyString_FromString(buffer);
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146 }
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147
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148 /* Weak references only support equality, not ordering. Two weak references
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149 are equal if the underlying objects are equal. If the underlying object has
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150 gone away, they are equal if they are identical. */
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151
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152 static PyObject *
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153 weakref_richcompare(PyWeakReference* self, PyWeakReference* other, int op)
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154 {
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155 if (op != Py_EQ || self->ob_type != other->ob_type) {
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156 Py_INCREF(Py_NotImplemented);
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157 return Py_NotImplemented;
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158 }
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159 if (self->wr_object == Py_None || other->wr_object == Py_None) {
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160 PyObject *res = self==other ? Py_True : Py_False;
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161 Py_INCREF(res);
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162 return res;
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163 }
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164 return PyObject_RichCompare(self->wr_object, other->wr_object, op);
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165 }
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166
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167
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168 statichere PyTypeObject
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169 PyWeakReference_Type = {
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170 PyObject_HEAD_INIT(NULL)
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171 0,
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172 "weakref",
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173 sizeof(PyWeakReference) + PyGC_HEAD_SIZE,
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174 0,
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175 (destructor)weakref_dealloc,/*tp_dealloc*/
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176 0, /*tp_print*/
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177 0, /*tp_getattr*/
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178 0, /*tp_setattr*/
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179 0, /*tp_compare*/
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180 (reprfunc)weakref_repr, /*tp_repr*/
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181 0, /*tp_as_number*/
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182 0, /*tp_as_sequence*/
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183 0, /*tp_as_mapping*/
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184 (hashfunc)weakref_hash, /*tp_hash*/
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185 (ternaryfunc)weakref_call, /*tp_call*/
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186 0, /*tp_str*/
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187 0, /*tp_getattro*/
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188 0, /*tp_setattro*/
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189 0, /*tp_as_buffer*/
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190 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC | Py_TPFLAGS_HAVE_RICHCOMPARE,
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191 0, /*tp_doc*/
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192 (traverseproc)gc_traverse, /*tp_traverse*/
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193 (inquiry)gc_clear, /*tp_clear*/
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194 (richcmpfunc)weakref_richcompare, /*tp_richcompare*/
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195 0, /*tp_weaklistoffset*/
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196 };
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197
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198
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199 static int
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200 proxy_checkref(PyWeakReference *proxy)
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201 {
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diff changeset
202 if (proxy->wr_object == Py_None) {
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203 PyErr_SetString(ReferenceError,
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204 "weakly-referenced object no longer exists");
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205 return 0;
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diff changeset
206 }
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207 return 1;
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208 }
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209
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210
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211 #define WRAP_UNARY(method, generic) \
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212 static PyObject * \
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213 method(PyWeakReference *proxy) { \
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214 if (!proxy_checkref(proxy)) { \
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215 return NULL; \
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216 } \
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217 return generic(proxy->wr_object); \
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218 }
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219
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220 #define WRAP_BINARY(method, generic) \
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221 static PyObject * \
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222 method(PyWeakReference *proxy, PyObject *v) { \
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223 if (!proxy_checkref(proxy)) { \
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224 return NULL; \
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225 } \
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226 return generic(proxy->wr_object, v); \
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227 }
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228
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229 #define WRAP_TERNARY(method, generic) \
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230 static PyObject * \
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231 method(PyWeakReference *proxy, PyObject *v, PyObject *w) { \
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232 if (!proxy_checkref(proxy)) { \
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233 return NULL; \
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234 } \
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235 return generic(proxy->wr_object, v, w); \
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236 }
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237
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238
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239 /* direct slots */
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240
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241 WRAP_BINARY(proxy_getattr, PyObject_GetAttr)
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242 WRAP_UNARY(proxy_str, PyObject_Str)
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243 WRAP_TERNARY(proxy_call, PyEval_CallObjectWithKeywords)
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244
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diff changeset
245 static int
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246 proxy_print(PyWeakReference *proxy, FILE *fp, int flags)
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diff changeset
247 {
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parents:
diff changeset
248 if (!proxy_checkref(proxy))
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diff changeset
249 return -1;
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diff changeset
250 return PyObject_Print(proxy->wr_object, fp, flags);
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251 }
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252
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diff changeset
253 static PyObject *
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diff changeset
254 proxy_repr(PyWeakReference *proxy)
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parents:
diff changeset
255 {
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parents:
diff changeset
256 char buf[160];
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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diff changeset
257 sprintf(buf, "<weakref at %p to %.100s at %p>", proxy,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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diff changeset
258 proxy->wr_object->ob_type->tp_name, proxy->wr_object);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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diff changeset
259 return PyString_FromString(buf);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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diff changeset
260 }
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parents:
diff changeset
261
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diff changeset
262
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parents:
diff changeset
263 static int
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parents:
diff changeset
264 proxy_setattr(PyWeakReference *proxy, PyObject *name, PyObject *value)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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diff changeset
265 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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parents:
diff changeset
266 if (!proxy_checkref(proxy))
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diff changeset
267 return -1;
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parents:
diff changeset
268 return PyObject_SetAttr(proxy->wr_object, name, value);
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diff changeset
269 }
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parents:
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270
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parents:
diff changeset
271 static int
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parents:
diff changeset
272 proxy_compare(PyWeakReference *proxy, PyObject *v)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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parents:
diff changeset
273 {
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parents:
diff changeset
274 if (!proxy_checkref(proxy))
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parents:
diff changeset
275 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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diff changeset
276 return PyObject_Compare(proxy->wr_object, v);
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parents:
diff changeset
277 }
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parents:
diff changeset
278
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parents:
diff changeset
279 /* number slots */
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diff changeset
280 WRAP_BINARY(proxy_add, PyNumber_Add)
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diff changeset
281 WRAP_BINARY(proxy_sub, PyNumber_Subtract)
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diff changeset
282 WRAP_BINARY(proxy_mul, PyNumber_Multiply)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
283 WRAP_BINARY(proxy_div, PyNumber_Divide)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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parents:
diff changeset
284 WRAP_BINARY(proxy_mod, PyNumber_Remainder)
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parents:
diff changeset
285 WRAP_BINARY(proxy_divmod, PyNumber_Divmod)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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parents:
diff changeset
286 WRAP_TERNARY(proxy_pow, PyNumber_Power)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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parents:
diff changeset
287 WRAP_UNARY(proxy_neg, PyNumber_Negative)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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parents:
diff changeset
288 WRAP_UNARY(proxy_pos, PyNumber_Positive)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
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parents:
diff changeset
289 WRAP_UNARY(proxy_abs, PyNumber_Absolute)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
290 WRAP_UNARY(proxy_invert, PyNumber_Invert)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
291 WRAP_BINARY(proxy_lshift, PyNumber_Lshift)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
292 WRAP_BINARY(proxy_rshift, PyNumber_Rshift)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
293 WRAP_BINARY(proxy_and, PyNumber_And)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
294 WRAP_BINARY(proxy_xor, PyNumber_Xor)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
295 WRAP_BINARY(proxy_or, PyNumber_Or)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
296 WRAP_UNARY(proxy_int, PyNumber_Int)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
297 WRAP_UNARY(proxy_long, PyNumber_Long)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
298 WRAP_UNARY(proxy_float, PyNumber_Float)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
299 WRAP_BINARY(proxy_iadd, PyNumber_InPlaceAdd)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
300 WRAP_BINARY(proxy_isub, PyNumber_InPlaceSubtract)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
301 WRAP_BINARY(proxy_imul, PyNumber_InPlaceMultiply)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
302 WRAP_BINARY(proxy_idiv, PyNumber_InPlaceDivide)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
303 WRAP_BINARY(proxy_imod, PyNumber_InPlaceRemainder)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
304 WRAP_TERNARY(proxy_ipow, PyNumber_InPlacePower)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
305 WRAP_BINARY(proxy_ilshift, PyNumber_InPlaceLshift)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
306 WRAP_BINARY(proxy_irshift, PyNumber_InPlaceRshift)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
307 WRAP_BINARY(proxy_iand, PyNumber_InPlaceAnd)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
308 WRAP_BINARY(proxy_ixor, PyNumber_InPlaceXor)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
309 WRAP_BINARY(proxy_ior, PyNumber_InPlaceOr)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
310
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
311 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
312 proxy_nonzero(PyWeakReference *proxy)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
313 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
314 PyObject *o = proxy->wr_object;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
315 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
316 return 1;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
317 if (o->ob_type->tp_as_number &&
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
318 o->ob_type->tp_as_number->nb_nonzero)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
319 return (*o->ob_type->tp_as_number->nb_nonzero)(o);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
320 else
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
321 return 1;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
322 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
323
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
324 /* sequence slots */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
325
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
326 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
327 proxy_slice(PyWeakReference *proxy, int i, int j)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
328 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
329 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
330 return NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
331 return PySequence_GetSlice(proxy->wr_object, i, j);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
332 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
333
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
334 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
335 proxy_ass_slice(PyWeakReference *proxy, int i, int j, PyObject *value)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
336 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
337 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
338 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
339 return PySequence_SetSlice(proxy->wr_object, i, j, value);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
340 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
341
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
342 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
343 proxy_contains(PyWeakReference *proxy, PyObject *value)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
344 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
345 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
346 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
347 return PySequence_Contains(proxy->wr_object, value);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
348 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
349
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
350
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
351 /* mapping slots */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
352
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
353 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
354 proxy_length(PyWeakReference *proxy)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
355 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
356 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
357 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
358 return PyObject_Length(proxy->wr_object);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
359 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
360
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
361 WRAP_BINARY(proxy_getitem, PyObject_GetItem)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
362
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
363 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
364 proxy_setitem(PyWeakReference *proxy, PyObject *key, PyObject *value)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
365 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
366 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
367 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
368 return PyObject_SetItem(proxy->wr_object, key, value);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
369 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
370
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
371
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
372 static PyNumberMethods proxy_as_number = {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
373 (binaryfunc)proxy_add, /*nb_add*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
374 (binaryfunc)proxy_sub, /*nb_subtract*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
375 (binaryfunc)proxy_mul, /*nb_multiply*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
376 (binaryfunc)proxy_div, /*nb_divide*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
377 (binaryfunc)proxy_mod, /*nb_remainder*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
378 (binaryfunc)proxy_divmod, /*nb_divmod*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
379 (ternaryfunc)proxy_pow, /*nb_power*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
380 (unaryfunc)proxy_neg, /*nb_negative*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
381 (unaryfunc)proxy_pos, /*nb_positive*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
382 (unaryfunc)proxy_abs, /*nb_absolute*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
383 (inquiry)proxy_nonzero, /*nb_nonzero*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
384 (unaryfunc)proxy_invert, /*nb_invert*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
385 (binaryfunc)proxy_lshift, /*nb_lshift*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
386 (binaryfunc)proxy_rshift, /*nb_rshift*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
387 (binaryfunc)proxy_and, /*nb_and*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
388 (binaryfunc)proxy_xor, /*nb_xor*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
389 (binaryfunc)proxy_or, /*nb_or*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
390 (coercion)0, /*nb_coerce*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
391 (unaryfunc)proxy_int, /*nb_int*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
392 (unaryfunc)proxy_long, /*nb_long*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
393 (unaryfunc)proxy_float, /*nb_float*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
394 (unaryfunc)0, /*nb_oct*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
395 (unaryfunc)0, /*nb_hex*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
396 (binaryfunc)proxy_iadd, /*nb_inplace_add*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
397 (binaryfunc)proxy_isub, /*nb_inplace_subtract*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
398 (binaryfunc)proxy_imul, /*nb_inplace_multiply*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
399 (binaryfunc)proxy_idiv, /*nb_inplace_divide*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
400 (binaryfunc)proxy_imod, /*nb_inplace_remainder*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
401 (ternaryfunc)proxy_ipow, /*nb_inplace_power*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
402 (binaryfunc)proxy_ilshift, /*nb_inplace_lshift*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
403 (binaryfunc)proxy_irshift, /*nb_inplace_rshift*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
404 (binaryfunc)proxy_iand, /*nb_inplace_and*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
405 (binaryfunc)proxy_ixor, /*nb_inplace_xor*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
406 (binaryfunc)proxy_ior, /*nb_inplace_or*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
407 };
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
408
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
409 static PySequenceMethods proxy_as_sequence = {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
410 (inquiry)proxy_length, /*sq_length*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
411 0, /*sq_concat*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
412 0, /*sq_repeat*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
413 0, /*sq_item*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
414 (intintargfunc)proxy_slice, /*sq_slice*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
415 0, /*sq_ass_item*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
416 (intintobjargproc)proxy_ass_slice, /*sq_ass_slice*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
417 (objobjproc)proxy_contains, /* sq_contains */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
418 };
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
419
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
420 static PyMappingMethods proxy_as_mapping = {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
421 (inquiry)proxy_length, /*mp_length*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
422 (binaryfunc)proxy_getitem, /*mp_subscript*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
423 (objobjargproc)proxy_setitem, /*mp_ass_subscript*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
424 };
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
425
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
426
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
427 static PyTypeObject
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
428 PyWeakProxy_Type = {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
429 PyObject_HEAD_INIT(NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
430 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
431 "weakproxy",
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
432 sizeof(PyWeakReference) + PyGC_HEAD_SIZE,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
433 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
434 /* methods */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
435 (destructor)weakref_dealloc,/*tp_dealloc*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
436 (printfunc)proxy_print, /*tp_print*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
437 0, /*tp_getattr*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
438 0, /*tp_setattr*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
439 (cmpfunc)proxy_compare, /*tp_compare*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
440 (unaryfunc)proxy_repr, /*tp_repr*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
441 &proxy_as_number, /*tp_as_number*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
442 &proxy_as_sequence, /*tp_as_sequence*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
443 &proxy_as_mapping, /*tp_as_mapping*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
444 0, /*tp_hash*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
445 (ternaryfunc)0, /*tp_call*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
446 (unaryfunc)proxy_str, /*tp_str*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
447 (getattrofunc)proxy_getattr,/*tp_getattro*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
448 (setattrofunc)proxy_setattr,/*tp_setattro*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
449 0, /*tp_as_buffer*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
450 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
451 |Py_TPFLAGS_CHECKTYPES, /*tp_flags*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
452 0, /*tp_doc*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
453 (traverseproc)gc_traverse, /*tp_traverse*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
454 (inquiry)gc_clear, /*tp_clear*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
455 };
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
456
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
457
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
458 static PyTypeObject
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
459 PyWeakCallableProxy_Type = {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
460 PyObject_HEAD_INIT(NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
461 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
462 "weakcallableproxy",
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
463 sizeof(PyWeakReference) + PyGC_HEAD_SIZE,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
464 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
465 /* methods */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
466 (destructor)weakref_dealloc,/*tp_dealloc*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
467 (printfunc)proxy_print, /*tp_print*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
468 0, /*tp_getattr*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
469 0, /*tp_setattr*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
470 (cmpfunc)proxy_compare, /*tp_compare*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
471 (unaryfunc)proxy_repr, /*tp_repr*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
472 &proxy_as_number, /*tp_as_number*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
473 &proxy_as_sequence, /*tp_as_sequence*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
474 &proxy_as_mapping, /*tp_as_mapping*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
475 0, /*tp_hash*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
476 (ternaryfunc)proxy_call, /*tp_call*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
477 (unaryfunc)proxy_str, /*tp_str*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
478 (getattrofunc)proxy_getattr,/*tp_getattro*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
479 (setattrofunc)proxy_setattr,/*tp_setattro*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
480 0, /*tp_as_buffer*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
481 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
482 |Py_TPFLAGS_CHECKTYPES, /*tp_flags*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
483 0, /*tp_doc*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
484 (traverseproc)gc_traverse, /*tp_traverse*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
485 (inquiry)gc_clear, /*tp_clear*/
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
486 };
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
487
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
488
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
489 static long
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
490 getweakrefcount(PyWeakReference *head)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
491 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
492 long count = 0;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
493
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
494 while (head != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
495 ++count;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
496 head = head->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
497 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
498 return count;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
499 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
500
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
501
16659
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
502 static char weakref_getweakrefcount__doc__[] =
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
503 "getweakrefcount(object) -- return the number of weak references\n"
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
504 "to 'object'.";
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
505
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
506 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
507 weakref_getweakrefcount(PyObject *self, PyObject *args)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
508 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
509 PyObject *result = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
510 PyObject *object;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
511
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
512 if (PyArg_ParseTuple(args, "O:getweakrefcount", &object)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
513 if (PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
514 PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
515
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
516 result = PyInt_FromLong(getweakrefcount(*list));
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
517 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
518 else
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
519 result = PyInt_FromLong(0);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
520 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
521 return result;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
522 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
523
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
524
16659
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
525 static char weakref_getweakrefs__doc__[] =
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
526 "getweakrefs(object) -- return a list of all weak reference objects\n"
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
527 "that point to 'object'.";
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
528
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
529 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
530 weakref_getweakrefs(PyObject *self, PyObject *args)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
531 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
532 PyObject *result = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
533 PyObject *object;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
534
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
535 if (PyArg_ParseTuple(args, "O:getweakrefs", &object)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
536 if (PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
537 PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
538 long count = getweakrefcount(*list);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
539
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
540 result = PyList_New(count);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
541 if (result != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
542 PyWeakReference *current = *list;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
543 long i;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
544 for (i = 0; i < count; ++i) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
545 PyList_SET_ITEM(result, i, (PyObject *) current);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
546 Py_INCREF(current);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
547 current = current->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
548 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
549 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
550 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
551 else {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
552 result = PyList_New(0);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
553 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
554 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
555 return result;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
556 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
557
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
558
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
559 /* Given the head of an object's list of weak references, extract the
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
560 * two callback-less refs (ref and proxy). Used to determine if the
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
561 * shared references exist and to determine the back link for newly
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
562 * inserted references.
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
563 */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
564 static void
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
565 get_basic_refs(PyWeakReference *head,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
566 PyWeakReference **refp, PyWeakReference **proxyp)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
567 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
568 *refp = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
569 *proxyp = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
570
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
571 if (head != NULL && head->wr_callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
572 if (head->ob_type == &PyWeakReference_Type) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
573 *refp = head;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
574 head = head->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
575 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
576 if (head != NULL && head->wr_callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
577 *proxyp = head;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
578 head = head->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
579 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
580 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
581 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
582
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
583 /* Insert 'newref' in the list after 'prev'. Both must be non-NULL. */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
584 static void
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
585 insert_after(PyWeakReference *newref, PyWeakReference *prev)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
586 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
587 newref->wr_prev = prev;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
588 newref->wr_next = prev->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
589 if (prev->wr_next != NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
590 prev->wr_next->wr_prev = newref;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
591 prev->wr_next = newref;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
592 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
593
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
594 /* Insert 'newref' at the head of the list; 'list' points to the variable
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
595 * that stores the head.
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
596 */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
597 static void
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
598 insert_head(PyWeakReference *newref, PyWeakReference **list)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
599 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
600 PyWeakReference *next = *list;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
601
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
602 newref->wr_prev = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
603 newref->wr_next = next;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
604 if (next != NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
605 next->wr_prev = newref;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
606 *list = newref;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
607 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
608
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
609
16659
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
610 static char weakref_ref__doc__[] =
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
611 "new(object[, callback]) -- create a weak reference to 'object';\n"
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
612 "when 'object' is finalized, 'callback' will be called and passed\n"
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
613 "a reference to 'object'.";
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
614
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
615 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
616 weakref_ref(PyObject *self, PyObject *args)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
617 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
618 PyObject *object;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
619 PyObject *callback = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
620 PyWeakReference *result = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
621
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
622 if (PyArg_ParseTuple(args, "O|O:new", &object, &callback)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
623 PyWeakReference **list;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
624 PyWeakReference *ref, *proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
625
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
626 if (!PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
627 PyErr_Format(PyExc_TypeError,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
628 "'%s' objects are not weakly referencable",
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
629 object->ob_type->tp_name);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
630 return NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
631 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
632 list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
633 get_basic_refs(*list, &ref, &proxy);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
634 if (callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
635 /* return existing weak reference if it exists */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
636 result = ref;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
637 Py_XINCREF(result);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
638 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
639 if (result == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
640 result = new_weakref();
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
641 if (result != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
642 Py_XINCREF(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
643 result->wr_callback = callback;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
644 result->wr_object = object;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
645 if (callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
646 insert_head(result, list);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
647 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
648 else {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
649 PyWeakReference *prev = (proxy == NULL) ? ref : proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
650
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
651 if (prev == NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
652 insert_head(result, list);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
653 else
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
654 insert_after(result, prev);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
655 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
656 PyObject_GC_Init((PyObject *) result);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
657 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
658 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
659 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
660 return (PyObject *) result;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
661 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
662
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
663
16659
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
664 static char weakref_proxy__doc__[] =
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
665 "proxy(object[, callback]) -- create a proxy object that weakly\n"
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
666 "references 'object'. 'callback', if given, is called with a\n"
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
667 "reference to the proxy when it is about to be finalized.";
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
668
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
669 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
670 weakref_proxy(PyObject *self, PyObject *args)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
671 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
672 PyObject *object;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
673 PyObject *callback = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
674 PyWeakReference *result = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
675
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
676 if (PyArg_ParseTuple(args, "O|O:new", &object, &callback)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
677 PyWeakReference **list;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
678 PyWeakReference *ref, *proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
679
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
680 if (!PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
681 PyErr_Format(PyExc_TypeError,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
682 "'%s' objects are not weakly referencable",
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
683 object->ob_type->tp_name);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
684 return NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
685 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
686 list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
687 get_basic_refs(*list, &ref, &proxy);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
688 if (callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
689 /* attempt to return an existing weak reference if it exists */
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
690 result = proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
691 Py_XINCREF(result);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
692 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
693 if (result == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
694 result = new_weakref();
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
695 if (result != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
696 PyWeakReference *prev;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
697
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
698 if (PyCallable_Check(object))
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
699 result->ob_type = &PyWeakCallableProxy_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
700 else
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
701 result->ob_type = &PyWeakProxy_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
702 result->wr_object = object;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
703 Py_XINCREF(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
704 result->wr_callback = callback;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
705 if (callback == NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
706 prev = ref;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
707 else
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
708 prev = (proxy == NULL) ? ref : proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
709
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
710 if (prev == NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
711 insert_head(result, list);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
712 else
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
713 insert_after(result, prev);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
714 PyObject_GC_Init((PyObject *) result);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
715 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
716 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
717 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
718 return (PyObject *) result;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
719 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
720
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
721
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
722 /* This is the implementation of the PyObject_ClearWeakRefs() function; it
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
723 * is installed in the init_weakref() function. It is called by the
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
724 * tp_dealloc handler to clear weak references.
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
725 *
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
726 * This iterates through the weak references for 'object' and calls callbacks
16769
905011e8740c cleanup_helper(): Added missing "void" type for the function, updated
Fred Drake <fdrake@acm.org>
parents: 16768
diff changeset
727 * for those references which have one. It returns when all callbacks have
905011e8740c cleanup_helper(): Added missing "void" type for the function, updated
Fred Drake <fdrake@acm.org>
parents: 16768
diff changeset
728 * been attempted.
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
729 */
16769
905011e8740c cleanup_helper(): Added missing "void" type for the function, updated
Fred Drake <fdrake@acm.org>
parents: 16768
diff changeset
730 static void
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
731 cleanup_helper(PyObject *object)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
732 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
733 PyWeakReference **list;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
734
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
735 if (object == NULL
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
736 || !PyType_SUPPORTS_WEAKREFS(object->ob_type)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
737 || object->ob_refcnt != 0) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
738 PyErr_BadInternalCall();
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
739 /* not sure what we should return here */
16768
d446e4ec9b7b The return value from PyObject_ClearWeakRefs() is no longer meaningful,
Fred Drake <fdrake@acm.org>
parents: 16659
diff changeset
740 return;
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
741 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
742 list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
743 while (*list != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
744 PyWeakReference *current = *list;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
745 PyObject *callback = current->wr_callback;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
746
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
747 Py_XINCREF(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
748 clear_weakref(current);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
749 if (callback != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
750 PyObject *cbresult;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
751
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
752 cbresult = PyObject_CallFunction(callback, "O", current);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
753 if (cbresult == NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
754 PyErr_WriteUnraisable(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
755 else
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
756 Py_DECREF(cbresult);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
757 Py_DECREF(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
758 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
759 }
16768
d446e4ec9b7b The return value from PyObject_ClearWeakRefs() is no longer meaningful,
Fred Drake <fdrake@acm.org>
parents: 16659
diff changeset
760 return;
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
761 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
762
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
763
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
764 static PyMethodDef
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
765 weakref_functions[] = {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
766 {"getweakrefcount", weakref_getweakrefcount, METH_VARARGS,
16659
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
767 weakref_getweakrefcount__doc__},
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
768 {"getweakrefs", weakref_getweakrefs, METH_VARARGS,
16659
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
769 weakref_getweakrefs__doc__},
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
770 {"proxy", weakref_proxy, METH_VARARGS,
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
771 weakref_proxy__doc__},
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
772 {"ref", weakref_ref, METH_VARARGS,
16659
deec6fa80471 Move docstrings out of function table to constants defined near the
Fred Drake <fdrake@acm.org>
parents: 16434
diff changeset
773 weakref_ref__doc__},
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
774 {NULL, NULL, 0, NULL}
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
775 };
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
776
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
777
16402
08ac556f2d12 Teach Windows build about the _weakref module.
Tim Peters <tim.peters@gmail.com>
parents: 16385
diff changeset
778 DL_EXPORT(void)
16385
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
779 init_weakref(void)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
780 {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
781 PyObject *m;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
782
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
783 PyWeakReference_Type.ob_type = &PyType_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
784 PyWeakProxy_Type.ob_type = &PyType_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
785 PyWeakCallableProxy_Type.ob_type = &PyType_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
786 m = Py_InitModule3("_weakref", weakref_functions,
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
787 "Weak-reference support module.");
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
788 if (m != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
789 PyObject_ClearWeakRefs = cleanup_helper;
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
790 Py_INCREF(&PyWeakReference_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
791 PyModule_AddObject(m, "ReferenceType",
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
792 (PyObject *) &PyWeakReference_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
793 Py_INCREF(&PyWeakProxy_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
794 PyModule_AddObject(m, "ProxyType",
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
795 (PyObject *) &PyWeakProxy_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
796 Py_INCREF(&PyWeakCallableProxy_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
797 PyModule_AddObject(m, "CallableProxyType",
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
798 (PyObject *) &PyWeakCallableProxy_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
799 ReferenceError = PyErr_NewException("weakref.ReferenceError",
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
800 PyExc_RuntimeError, NULL);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
801 if (ReferenceError != NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
802 PyModule_AddObject(m, "ReferenceError", ReferenceError);
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
803 }
1fb6672b20ef PEP 205, Weak References -- initial checkin.
Fred Drake <fdrake@acm.org>
parents:
diff changeset
804 }