1 | n/a | /* Class object implementation (dead now except for methods) */ |
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2 | n/a | |
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3 | n/a | #include "Python.h" |
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4 | n/a | #include "structmember.h" |
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5 | n/a | |
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6 | n/a | #define TP_DESCR_GET(t) ((t)->tp_descr_get) |
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7 | n/a | |
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8 | n/a | /* Free list for method objects to safe malloc/free overhead |
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9 | n/a | * The im_self element is used to chain the elements. |
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10 | n/a | */ |
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11 | n/a | static PyMethodObject *free_list; |
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12 | n/a | static int numfree = 0; |
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13 | n/a | #ifndef PyMethod_MAXFREELIST |
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14 | n/a | #define PyMethod_MAXFREELIST 256 |
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15 | n/a | #endif |
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16 | n/a | |
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17 | n/a | _Py_IDENTIFIER(__name__); |
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18 | n/a | _Py_IDENTIFIER(__qualname__); |
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19 | n/a | |
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20 | n/a | PyObject * |
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21 | n/a | PyMethod_Function(PyObject *im) |
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22 | n/a | { |
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23 | n/a | if (!PyMethod_Check(im)) { |
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24 | n/a | PyErr_BadInternalCall(); |
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25 | n/a | return NULL; |
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26 | n/a | } |
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27 | n/a | return ((PyMethodObject *)im)->im_func; |
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28 | n/a | } |
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29 | n/a | |
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30 | n/a | PyObject * |
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31 | n/a | PyMethod_Self(PyObject *im) |
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32 | n/a | { |
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33 | n/a | if (!PyMethod_Check(im)) { |
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34 | n/a | PyErr_BadInternalCall(); |
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35 | n/a | return NULL; |
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36 | n/a | } |
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37 | n/a | return ((PyMethodObject *)im)->im_self; |
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38 | n/a | } |
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39 | n/a | |
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40 | n/a | /* Method objects are used for bound instance methods returned by |
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41 | n/a | instancename.methodname. ClassName.methodname returns an ordinary |
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42 | n/a | function. |
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43 | n/a | */ |
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44 | n/a | |
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45 | n/a | PyObject * |
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46 | n/a | PyMethod_New(PyObject *func, PyObject *self) |
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47 | n/a | { |
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48 | n/a | PyMethodObject *im; |
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49 | n/a | if (self == NULL) { |
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50 | n/a | PyErr_BadInternalCall(); |
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51 | n/a | return NULL; |
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52 | n/a | } |
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53 | n/a | im = free_list; |
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54 | n/a | if (im != NULL) { |
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55 | n/a | free_list = (PyMethodObject *)(im->im_self); |
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56 | n/a | (void)PyObject_INIT(im, &PyMethod_Type); |
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57 | n/a | numfree--; |
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58 | n/a | } |
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59 | n/a | else { |
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60 | n/a | im = PyObject_GC_New(PyMethodObject, &PyMethod_Type); |
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61 | n/a | if (im == NULL) |
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62 | n/a | return NULL; |
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63 | n/a | } |
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64 | n/a | im->im_weakreflist = NULL; |
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65 | n/a | Py_INCREF(func); |
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66 | n/a | im->im_func = func; |
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67 | n/a | Py_XINCREF(self); |
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68 | n/a | im->im_self = self; |
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69 | n/a | _PyObject_GC_TRACK(im); |
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70 | n/a | return (PyObject *)im; |
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71 | n/a | } |
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72 | n/a | |
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73 | n/a | static PyObject * |
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74 | n/a | method_reduce(PyMethodObject *im) |
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75 | n/a | { |
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76 | n/a | PyObject *self = PyMethod_GET_SELF(im); |
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77 | n/a | PyObject *func = PyMethod_GET_FUNCTION(im); |
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78 | n/a | PyObject *builtins; |
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79 | n/a | PyObject *getattr; |
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80 | n/a | PyObject *funcname; |
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81 | n/a | _Py_IDENTIFIER(getattr); |
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82 | n/a | |
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83 | n/a | funcname = _PyObject_GetAttrId(func, &PyId___name__); |
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84 | n/a | if (funcname == NULL) { |
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85 | n/a | return NULL; |
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86 | n/a | } |
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87 | n/a | builtins = PyEval_GetBuiltins(); |
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88 | n/a | getattr = _PyDict_GetItemId(builtins, &PyId_getattr); |
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89 | n/a | return Py_BuildValue("O(ON)", getattr, self, funcname); |
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90 | n/a | } |
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91 | n/a | |
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92 | n/a | static PyMethodDef method_methods[] = { |
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93 | n/a | {"__reduce__", (PyCFunction)method_reduce, METH_NOARGS, NULL}, |
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94 | n/a | {NULL, NULL} |
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95 | n/a | }; |
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96 | n/a | |
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97 | n/a | /* Descriptors for PyMethod attributes */ |
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98 | n/a | |
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99 | n/a | /* im_func and im_self are stored in the PyMethod object */ |
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100 | n/a | |
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101 | n/a | #define MO_OFF(x) offsetof(PyMethodObject, x) |
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102 | n/a | |
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103 | n/a | static PyMemberDef method_memberlist[] = { |
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104 | n/a | {"__func__", T_OBJECT, MO_OFF(im_func), READONLY|RESTRICTED, |
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105 | n/a | "the function (or other callable) implementing a method"}, |
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106 | n/a | {"__self__", T_OBJECT, MO_OFF(im_self), READONLY|RESTRICTED, |
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107 | n/a | "the instance to which a method is bound"}, |
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108 | n/a | {NULL} /* Sentinel */ |
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109 | n/a | }; |
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110 | n/a | |
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111 | n/a | /* Christian Tismer argued convincingly that method attributes should |
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112 | n/a | (nearly) always override function attributes. |
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113 | n/a | The one exception is __doc__; there's a default __doc__ which |
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114 | n/a | should only be used for the class, not for instances */ |
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115 | n/a | |
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116 | n/a | static PyObject * |
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117 | n/a | method_get_doc(PyMethodObject *im, void *context) |
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118 | n/a | { |
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119 | n/a | static PyObject *docstr; |
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120 | n/a | if (docstr == NULL) { |
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121 | n/a | docstr= PyUnicode_InternFromString("__doc__"); |
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122 | n/a | if (docstr == NULL) |
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123 | n/a | return NULL; |
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124 | n/a | } |
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125 | n/a | return PyObject_GetAttr(im->im_func, docstr); |
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126 | n/a | } |
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127 | n/a | |
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128 | n/a | static PyGetSetDef method_getset[] = { |
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129 | n/a | {"__doc__", (getter)method_get_doc, NULL, NULL}, |
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130 | n/a | {0} |
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131 | n/a | }; |
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132 | n/a | |
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133 | n/a | static PyObject * |
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134 | n/a | method_getattro(PyObject *obj, PyObject *name) |
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135 | n/a | { |
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136 | n/a | PyMethodObject *im = (PyMethodObject *)obj; |
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137 | n/a | PyTypeObject *tp = obj->ob_type; |
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138 | n/a | PyObject *descr = NULL; |
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139 | n/a | |
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140 | n/a | { |
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141 | n/a | if (tp->tp_dict == NULL) { |
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142 | n/a | if (PyType_Ready(tp) < 0) |
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143 | n/a | return NULL; |
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144 | n/a | } |
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145 | n/a | descr = _PyType_Lookup(tp, name); |
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146 | n/a | } |
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147 | n/a | |
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148 | n/a | if (descr != NULL) { |
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149 | n/a | descrgetfunc f = TP_DESCR_GET(descr->ob_type); |
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150 | n/a | if (f != NULL) |
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151 | n/a | return f(descr, obj, (PyObject *)obj->ob_type); |
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152 | n/a | else { |
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153 | n/a | Py_INCREF(descr); |
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154 | n/a | return descr; |
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155 | n/a | } |
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156 | n/a | } |
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157 | n/a | |
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158 | n/a | return PyObject_GetAttr(im->im_func, name); |
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159 | n/a | } |
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160 | n/a | |
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161 | n/a | PyDoc_STRVAR(method_doc, |
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162 | n/a | "method(function, instance)\n\ |
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163 | n/a | \n\ |
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164 | n/a | Create a bound instance method object."); |
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165 | n/a | |
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166 | n/a | static PyObject * |
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167 | n/a | method_new(PyTypeObject* type, PyObject* args, PyObject *kw) |
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168 | n/a | { |
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169 | n/a | PyObject *func; |
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170 | n/a | PyObject *self; |
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171 | n/a | |
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172 | n/a | if (!_PyArg_NoKeywords("method", kw)) |
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173 | n/a | return NULL; |
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174 | n/a | if (!PyArg_UnpackTuple(args, "method", 2, 2, |
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175 | n/a | &func, &self)) |
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176 | n/a | return NULL; |
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177 | n/a | if (!PyCallable_Check(func)) { |
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178 | n/a | PyErr_SetString(PyExc_TypeError, |
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179 | n/a | "first argument must be callable"); |
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180 | n/a | return NULL; |
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181 | n/a | } |
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182 | n/a | if (self == NULL || self == Py_None) { |
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183 | n/a | PyErr_SetString(PyExc_TypeError, |
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184 | n/a | "self must not be None"); |
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185 | n/a | return NULL; |
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186 | n/a | } |
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187 | n/a | |
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188 | n/a | return PyMethod_New(func, self); |
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189 | n/a | } |
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190 | n/a | |
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191 | n/a | static void |
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192 | n/a | method_dealloc(PyMethodObject *im) |
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193 | n/a | { |
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194 | n/a | _PyObject_GC_UNTRACK(im); |
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195 | n/a | if (im->im_weakreflist != NULL) |
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196 | n/a | PyObject_ClearWeakRefs((PyObject *)im); |
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197 | n/a | Py_DECREF(im->im_func); |
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198 | n/a | Py_XDECREF(im->im_self); |
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199 | n/a | if (numfree < PyMethod_MAXFREELIST) { |
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200 | n/a | im->im_self = (PyObject *)free_list; |
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201 | n/a | free_list = im; |
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202 | n/a | numfree++; |
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203 | n/a | } |
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204 | n/a | else { |
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205 | n/a | PyObject_GC_Del(im); |
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206 | n/a | } |
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207 | n/a | } |
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208 | n/a | |
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209 | n/a | static PyObject * |
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210 | n/a | method_richcompare(PyObject *self, PyObject *other, int op) |
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211 | n/a | { |
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212 | n/a | PyMethodObject *a, *b; |
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213 | n/a | PyObject *res; |
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214 | n/a | int eq; |
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215 | n/a | |
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216 | n/a | if ((op != Py_EQ && op != Py_NE) || |
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217 | n/a | !PyMethod_Check(self) || |
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218 | n/a | !PyMethod_Check(other)) |
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219 | n/a | { |
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220 | n/a | Py_RETURN_NOTIMPLEMENTED; |
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221 | n/a | } |
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222 | n/a | a = (PyMethodObject *)self; |
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223 | n/a | b = (PyMethodObject *)other; |
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224 | n/a | eq = PyObject_RichCompareBool(a->im_func, b->im_func, Py_EQ); |
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225 | n/a | if (eq == 1) { |
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226 | n/a | if (a->im_self == NULL || b->im_self == NULL) |
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227 | n/a | eq = a->im_self == b->im_self; |
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228 | n/a | else |
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229 | n/a | eq = PyObject_RichCompareBool(a->im_self, b->im_self, |
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230 | n/a | Py_EQ); |
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231 | n/a | } |
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232 | n/a | if (eq < 0) |
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233 | n/a | return NULL; |
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234 | n/a | if (op == Py_EQ) |
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235 | n/a | res = eq ? Py_True : Py_False; |
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236 | n/a | else |
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237 | n/a | res = eq ? Py_False : Py_True; |
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238 | n/a | Py_INCREF(res); |
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239 | n/a | return res; |
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240 | n/a | } |
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241 | n/a | |
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242 | n/a | static PyObject * |
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243 | n/a | method_repr(PyMethodObject *a) |
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244 | n/a | { |
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245 | n/a | PyObject *self = a->im_self; |
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246 | n/a | PyObject *func = a->im_func; |
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247 | n/a | PyObject *funcname = NULL, *result = NULL; |
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248 | n/a | const char *defname = "?"; |
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249 | n/a | |
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250 | n/a | funcname = _PyObject_GetAttrId(func, &PyId___qualname__); |
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251 | n/a | if (funcname == NULL) { |
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252 | n/a | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
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253 | n/a | return NULL; |
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254 | n/a | PyErr_Clear(); |
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255 | n/a | |
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256 | n/a | funcname = _PyObject_GetAttrId(func, &PyId___name__); |
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257 | n/a | if (funcname == NULL) { |
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258 | n/a | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
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259 | n/a | return NULL; |
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260 | n/a | PyErr_Clear(); |
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261 | n/a | } |
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262 | n/a | } |
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263 | n/a | |
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264 | n/a | if (funcname != NULL && !PyUnicode_Check(funcname)) { |
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265 | n/a | Py_DECREF(funcname); |
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266 | n/a | funcname = NULL; |
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267 | n/a | } |
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268 | n/a | |
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269 | n/a | /* XXX Shouldn't use repr()/%R here! */ |
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270 | n/a | result = PyUnicode_FromFormat("<bound method %V of %R>", |
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271 | n/a | funcname, defname, self); |
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272 | n/a | |
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273 | n/a | Py_XDECREF(funcname); |
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274 | n/a | return result; |
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275 | n/a | } |
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276 | n/a | |
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277 | n/a | static Py_hash_t |
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278 | n/a | method_hash(PyMethodObject *a) |
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279 | n/a | { |
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280 | n/a | Py_hash_t x, y; |
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281 | n/a | if (a->im_self == NULL) |
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282 | n/a | x = PyObject_Hash(Py_None); |
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283 | n/a | else |
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284 | n/a | x = PyObject_Hash(a->im_self); |
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285 | n/a | if (x == -1) |
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286 | n/a | return -1; |
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287 | n/a | y = PyObject_Hash(a->im_func); |
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288 | n/a | if (y == -1) |
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289 | n/a | return -1; |
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290 | n/a | x = x ^ y; |
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291 | n/a | if (x == -1) |
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292 | n/a | x = -2; |
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293 | n/a | return x; |
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294 | n/a | } |
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295 | n/a | |
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296 | n/a | static int |
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297 | n/a | method_traverse(PyMethodObject *im, visitproc visit, void *arg) |
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298 | n/a | { |
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299 | n/a | Py_VISIT(im->im_func); |
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300 | n/a | Py_VISIT(im->im_self); |
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301 | n/a | return 0; |
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302 | n/a | } |
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303 | n/a | |
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304 | n/a | static PyObject * |
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305 | n/a | method_call(PyObject *method, PyObject *args, PyObject *kwargs) |
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306 | n/a | { |
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307 | n/a | PyObject *self, *func; |
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308 | n/a | |
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309 | n/a | self = PyMethod_GET_SELF(method); |
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310 | n/a | if (self == NULL) { |
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311 | n/a | PyErr_BadInternalCall(); |
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312 | n/a | return NULL; |
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313 | n/a | } |
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314 | n/a | |
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315 | n/a | func = PyMethod_GET_FUNCTION(method); |
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316 | n/a | |
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317 | n/a | return _PyObject_Call_Prepend(func, self, args, kwargs); |
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318 | n/a | } |
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319 | n/a | |
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320 | n/a | static PyObject * |
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321 | n/a | method_descr_get(PyObject *meth, PyObject *obj, PyObject *cls) |
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322 | n/a | { |
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323 | n/a | /* Don't rebind an already bound method of a class that's not a base |
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324 | n/a | class of cls. */ |
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325 | n/a | if (PyMethod_GET_SELF(meth) != NULL) { |
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326 | n/a | /* Already bound */ |
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327 | n/a | Py_INCREF(meth); |
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328 | n/a | return meth; |
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329 | n/a | } |
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330 | n/a | /* Bind it to obj */ |
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331 | n/a | return PyMethod_New(PyMethod_GET_FUNCTION(meth), obj); |
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332 | n/a | } |
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333 | n/a | |
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334 | n/a | PyTypeObject PyMethod_Type = { |
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335 | n/a | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
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336 | n/a | "method", |
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337 | n/a | sizeof(PyMethodObject), |
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338 | n/a | 0, |
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339 | n/a | (destructor)method_dealloc, /* tp_dealloc */ |
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340 | n/a | 0, /* tp_print */ |
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341 | n/a | 0, /* tp_getattr */ |
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342 | n/a | 0, /* tp_setattr */ |
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343 | n/a | 0, /* tp_reserved */ |
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344 | n/a | (reprfunc)method_repr, /* tp_repr */ |
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345 | n/a | 0, /* tp_as_number */ |
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346 | n/a | 0, /* tp_as_sequence */ |
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347 | n/a | 0, /* tp_as_mapping */ |
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348 | n/a | (hashfunc)method_hash, /* tp_hash */ |
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349 | n/a | method_call, /* tp_call */ |
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350 | n/a | 0, /* tp_str */ |
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351 | n/a | method_getattro, /* tp_getattro */ |
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352 | n/a | PyObject_GenericSetAttr, /* tp_setattro */ |
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353 | n/a | 0, /* tp_as_buffer */ |
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354 | n/a | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
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355 | n/a | method_doc, /* tp_doc */ |
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356 | n/a | (traverseproc)method_traverse, /* tp_traverse */ |
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357 | n/a | 0, /* tp_clear */ |
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358 | n/a | method_richcompare, /* tp_richcompare */ |
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359 | n/a | offsetof(PyMethodObject, im_weakreflist), /* tp_weaklistoffset */ |
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360 | n/a | 0, /* tp_iter */ |
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361 | n/a | 0, /* tp_iternext */ |
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362 | n/a | method_methods, /* tp_methods */ |
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363 | n/a | method_memberlist, /* tp_members */ |
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364 | n/a | method_getset, /* tp_getset */ |
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365 | n/a | 0, /* tp_base */ |
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366 | n/a | 0, /* tp_dict */ |
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367 | n/a | method_descr_get, /* tp_descr_get */ |
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368 | n/a | 0, /* tp_descr_set */ |
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369 | n/a | 0, /* tp_dictoffset */ |
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370 | n/a | 0, /* tp_init */ |
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371 | n/a | 0, /* tp_alloc */ |
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372 | n/a | method_new, /* tp_new */ |
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373 | n/a | }; |
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374 | n/a | |
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375 | n/a | /* Clear out the free list */ |
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376 | n/a | |
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377 | n/a | int |
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378 | n/a | PyMethod_ClearFreeList(void) |
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379 | n/a | { |
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380 | n/a | int freelist_size = numfree; |
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381 | n/a | |
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382 | n/a | while (free_list) { |
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383 | n/a | PyMethodObject *im = free_list; |
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384 | n/a | free_list = (PyMethodObject *)(im->im_self); |
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385 | n/a | PyObject_GC_Del(im); |
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386 | n/a | numfree--; |
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387 | n/a | } |
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388 | n/a | assert(numfree == 0); |
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389 | n/a | return freelist_size; |
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390 | n/a | } |
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391 | n/a | |
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392 | n/a | void |
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393 | n/a | PyMethod_Fini(void) |
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394 | n/a | { |
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395 | n/a | (void)PyMethod_ClearFreeList(); |
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396 | n/a | } |
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397 | n/a | |
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398 | n/a | /* Print summary info about the state of the optimized allocator */ |
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399 | n/a | void |
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400 | n/a | _PyMethod_DebugMallocStats(FILE *out) |
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401 | n/a | { |
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402 | n/a | _PyDebugAllocatorStats(out, |
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403 | n/a | "free PyMethodObject", |
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404 | n/a | numfree, sizeof(PyMethodObject)); |
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405 | n/a | } |
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406 | n/a | |
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407 | n/a | /* ------------------------------------------------------------------------ |
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408 | n/a | * instance method |
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409 | n/a | */ |
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410 | n/a | |
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411 | n/a | PyObject * |
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412 | n/a | PyInstanceMethod_New(PyObject *func) { |
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413 | n/a | PyInstanceMethodObject *method; |
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414 | n/a | method = PyObject_GC_New(PyInstanceMethodObject, |
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415 | n/a | &PyInstanceMethod_Type); |
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416 | n/a | if (method == NULL) return NULL; |
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417 | n/a | Py_INCREF(func); |
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418 | n/a | method->func = func; |
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419 | n/a | _PyObject_GC_TRACK(method); |
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420 | n/a | return (PyObject *)method; |
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421 | n/a | } |
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422 | n/a | |
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423 | n/a | PyObject * |
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424 | n/a | PyInstanceMethod_Function(PyObject *im) |
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425 | n/a | { |
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426 | n/a | if (!PyInstanceMethod_Check(im)) { |
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427 | n/a | PyErr_BadInternalCall(); |
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428 | n/a | return NULL; |
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429 | n/a | } |
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430 | n/a | return PyInstanceMethod_GET_FUNCTION(im); |
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431 | n/a | } |
---|
432 | n/a | |
---|
433 | n/a | #define IMO_OFF(x) offsetof(PyInstanceMethodObject, x) |
---|
434 | n/a | |
---|
435 | n/a | static PyMemberDef instancemethod_memberlist[] = { |
---|
436 | n/a | {"__func__", T_OBJECT, IMO_OFF(func), READONLY|RESTRICTED, |
---|
437 | n/a | "the function (or other callable) implementing a method"}, |
---|
438 | n/a | {NULL} /* Sentinel */ |
---|
439 | n/a | }; |
---|
440 | n/a | |
---|
441 | n/a | static PyObject * |
---|
442 | n/a | instancemethod_get_doc(PyObject *self, void *context) |
---|
443 | n/a | { |
---|
444 | n/a | static PyObject *docstr; |
---|
445 | n/a | if (docstr == NULL) { |
---|
446 | n/a | docstr = PyUnicode_InternFromString("__doc__"); |
---|
447 | n/a | if (docstr == NULL) |
---|
448 | n/a | return NULL; |
---|
449 | n/a | } |
---|
450 | n/a | return PyObject_GetAttr(PyInstanceMethod_GET_FUNCTION(self), docstr); |
---|
451 | n/a | } |
---|
452 | n/a | |
---|
453 | n/a | static PyGetSetDef instancemethod_getset[] = { |
---|
454 | n/a | {"__doc__", (getter)instancemethod_get_doc, NULL, NULL}, |
---|
455 | n/a | {0} |
---|
456 | n/a | }; |
---|
457 | n/a | |
---|
458 | n/a | static PyObject * |
---|
459 | n/a | instancemethod_getattro(PyObject *self, PyObject *name) |
---|
460 | n/a | { |
---|
461 | n/a | PyTypeObject *tp = self->ob_type; |
---|
462 | n/a | PyObject *descr = NULL; |
---|
463 | n/a | |
---|
464 | n/a | if (tp->tp_dict == NULL) { |
---|
465 | n/a | if (PyType_Ready(tp) < 0) |
---|
466 | n/a | return NULL; |
---|
467 | n/a | } |
---|
468 | n/a | descr = _PyType_Lookup(tp, name); |
---|
469 | n/a | |
---|
470 | n/a | if (descr != NULL) { |
---|
471 | n/a | descrgetfunc f = TP_DESCR_GET(descr->ob_type); |
---|
472 | n/a | if (f != NULL) |
---|
473 | n/a | return f(descr, self, (PyObject *)self->ob_type); |
---|
474 | n/a | else { |
---|
475 | n/a | Py_INCREF(descr); |
---|
476 | n/a | return descr; |
---|
477 | n/a | } |
---|
478 | n/a | } |
---|
479 | n/a | |
---|
480 | n/a | return PyObject_GetAttr(PyInstanceMethod_GET_FUNCTION(self), name); |
---|
481 | n/a | } |
---|
482 | n/a | |
---|
483 | n/a | static void |
---|
484 | n/a | instancemethod_dealloc(PyObject *self) { |
---|
485 | n/a | _PyObject_GC_UNTRACK(self); |
---|
486 | n/a | Py_DECREF(PyInstanceMethod_GET_FUNCTION(self)); |
---|
487 | n/a | PyObject_GC_Del(self); |
---|
488 | n/a | } |
---|
489 | n/a | |
---|
490 | n/a | static int |
---|
491 | n/a | instancemethod_traverse(PyObject *self, visitproc visit, void *arg) { |
---|
492 | n/a | Py_VISIT(PyInstanceMethod_GET_FUNCTION(self)); |
---|
493 | n/a | return 0; |
---|
494 | n/a | } |
---|
495 | n/a | |
---|
496 | n/a | static PyObject * |
---|
497 | n/a | instancemethod_call(PyObject *self, PyObject *arg, PyObject *kw) |
---|
498 | n/a | { |
---|
499 | n/a | return PyObject_Call(PyMethod_GET_FUNCTION(self), arg, kw); |
---|
500 | n/a | } |
---|
501 | n/a | |
---|
502 | n/a | static PyObject * |
---|
503 | n/a | instancemethod_descr_get(PyObject *descr, PyObject *obj, PyObject *type) { |
---|
504 | n/a | PyObject *func = PyInstanceMethod_GET_FUNCTION(descr); |
---|
505 | n/a | if (obj == NULL) { |
---|
506 | n/a | Py_INCREF(func); |
---|
507 | n/a | return func; |
---|
508 | n/a | } |
---|
509 | n/a | else |
---|
510 | n/a | return PyMethod_New(func, obj); |
---|
511 | n/a | } |
---|
512 | n/a | |
---|
513 | n/a | static PyObject * |
---|
514 | n/a | instancemethod_richcompare(PyObject *self, PyObject *other, int op) |
---|
515 | n/a | { |
---|
516 | n/a | PyInstanceMethodObject *a, *b; |
---|
517 | n/a | PyObject *res; |
---|
518 | n/a | int eq; |
---|
519 | n/a | |
---|
520 | n/a | if ((op != Py_EQ && op != Py_NE) || |
---|
521 | n/a | !PyInstanceMethod_Check(self) || |
---|
522 | n/a | !PyInstanceMethod_Check(other)) |
---|
523 | n/a | { |
---|
524 | n/a | Py_RETURN_NOTIMPLEMENTED; |
---|
525 | n/a | } |
---|
526 | n/a | a = (PyInstanceMethodObject *)self; |
---|
527 | n/a | b = (PyInstanceMethodObject *)other; |
---|
528 | n/a | eq = PyObject_RichCompareBool(a->func, b->func, Py_EQ); |
---|
529 | n/a | if (eq < 0) |
---|
530 | n/a | return NULL; |
---|
531 | n/a | if (op == Py_EQ) |
---|
532 | n/a | res = eq ? Py_True : Py_False; |
---|
533 | n/a | else |
---|
534 | n/a | res = eq ? Py_False : Py_True; |
---|
535 | n/a | Py_INCREF(res); |
---|
536 | n/a | return res; |
---|
537 | n/a | } |
---|
538 | n/a | |
---|
539 | n/a | static PyObject * |
---|
540 | n/a | instancemethod_repr(PyObject *self) |
---|
541 | n/a | { |
---|
542 | n/a | PyObject *func = PyInstanceMethod_Function(self); |
---|
543 | n/a | PyObject *funcname = NULL , *result = NULL; |
---|
544 | n/a | char *defname = "?"; |
---|
545 | n/a | |
---|
546 | n/a | if (func == NULL) { |
---|
547 | n/a | PyErr_BadInternalCall(); |
---|
548 | n/a | return NULL; |
---|
549 | n/a | } |
---|
550 | n/a | |
---|
551 | n/a | funcname = _PyObject_GetAttrId(func, &PyId___name__); |
---|
552 | n/a | if (funcname == NULL) { |
---|
553 | n/a | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
---|
554 | n/a | return NULL; |
---|
555 | n/a | PyErr_Clear(); |
---|
556 | n/a | } |
---|
557 | n/a | else if (!PyUnicode_Check(funcname)) { |
---|
558 | n/a | Py_DECREF(funcname); |
---|
559 | n/a | funcname = NULL; |
---|
560 | n/a | } |
---|
561 | n/a | |
---|
562 | n/a | result = PyUnicode_FromFormat("<instancemethod %V at %p>", |
---|
563 | n/a | funcname, defname, self); |
---|
564 | n/a | |
---|
565 | n/a | Py_XDECREF(funcname); |
---|
566 | n/a | return result; |
---|
567 | n/a | } |
---|
568 | n/a | |
---|
569 | n/a | /* |
---|
570 | n/a | static long |
---|
571 | n/a | instancemethod_hash(PyObject *self) |
---|
572 | n/a | { |
---|
573 | n/a | long x, y; |
---|
574 | n/a | x = (long)self; |
---|
575 | n/a | y = PyObject_Hash(PyInstanceMethod_GET_FUNCTION(self)); |
---|
576 | n/a | if (y == -1) |
---|
577 | n/a | return -1; |
---|
578 | n/a | x = x ^ y; |
---|
579 | n/a | if (x == -1) |
---|
580 | n/a | x = -2; |
---|
581 | n/a | return x; |
---|
582 | n/a | } |
---|
583 | n/a | */ |
---|
584 | n/a | |
---|
585 | n/a | PyDoc_STRVAR(instancemethod_doc, |
---|
586 | n/a | "instancemethod(function)\n\ |
---|
587 | n/a | \n\ |
---|
588 | n/a | Bind a function to a class."); |
---|
589 | n/a | |
---|
590 | n/a | static PyObject * |
---|
591 | n/a | instancemethod_new(PyTypeObject* type, PyObject* args, PyObject *kw) |
---|
592 | n/a | { |
---|
593 | n/a | PyObject *func; |
---|
594 | n/a | |
---|
595 | n/a | if (!_PyArg_NoKeywords("instancemethod", kw)) |
---|
596 | n/a | return NULL; |
---|
597 | n/a | if (!PyArg_UnpackTuple(args, "instancemethod", 1, 1, &func)) |
---|
598 | n/a | return NULL; |
---|
599 | n/a | if (!PyCallable_Check(func)) { |
---|
600 | n/a | PyErr_SetString(PyExc_TypeError, |
---|
601 | n/a | "first argument must be callable"); |
---|
602 | n/a | return NULL; |
---|
603 | n/a | } |
---|
604 | n/a | |
---|
605 | n/a | return PyInstanceMethod_New(func); |
---|
606 | n/a | } |
---|
607 | n/a | |
---|
608 | n/a | PyTypeObject PyInstanceMethod_Type = { |
---|
609 | n/a | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
---|
610 | n/a | "instancemethod", /* tp_name */ |
---|
611 | n/a | sizeof(PyInstanceMethodObject), /* tp_basicsize */ |
---|
612 | n/a | 0, /* tp_itemsize */ |
---|
613 | n/a | instancemethod_dealloc, /* tp_dealloc */ |
---|
614 | n/a | 0, /* tp_print */ |
---|
615 | n/a | 0, /* tp_getattr */ |
---|
616 | n/a | 0, /* tp_setattr */ |
---|
617 | n/a | 0, /* tp_reserved */ |
---|
618 | n/a | (reprfunc)instancemethod_repr, /* tp_repr */ |
---|
619 | n/a | 0, /* tp_as_number */ |
---|
620 | n/a | 0, /* tp_as_sequence */ |
---|
621 | n/a | 0, /* tp_as_mapping */ |
---|
622 | n/a | 0, /*(hashfunc)instancemethod_hash, tp_hash */ |
---|
623 | n/a | instancemethod_call, /* tp_call */ |
---|
624 | n/a | 0, /* tp_str */ |
---|
625 | n/a | instancemethod_getattro, /* tp_getattro */ |
---|
626 | n/a | PyObject_GenericSetAttr, /* tp_setattro */ |
---|
627 | n/a | 0, /* tp_as_buffer */ |
---|
628 | n/a | Py_TPFLAGS_DEFAULT |
---|
629 | n/a | | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
---|
630 | n/a | instancemethod_doc, /* tp_doc */ |
---|
631 | n/a | instancemethod_traverse, /* tp_traverse */ |
---|
632 | n/a | 0, /* tp_clear */ |
---|
633 | n/a | instancemethod_richcompare, /* tp_richcompare */ |
---|
634 | n/a | 0, /* tp_weaklistoffset */ |
---|
635 | n/a | 0, /* tp_iter */ |
---|
636 | n/a | 0, /* tp_iternext */ |
---|
637 | n/a | 0, /* tp_methods */ |
---|
638 | n/a | instancemethod_memberlist, /* tp_members */ |
---|
639 | n/a | instancemethod_getset, /* tp_getset */ |
---|
640 | n/a | 0, /* tp_base */ |
---|
641 | n/a | 0, /* tp_dict */ |
---|
642 | n/a | instancemethod_descr_get, /* tp_descr_get */ |
---|
643 | n/a | 0, /* tp_descr_set */ |
---|
644 | n/a | 0, /* tp_dictoffset */ |
---|
645 | n/a | 0, /* tp_init */ |
---|
646 | n/a | 0, /* tp_alloc */ |
---|
647 | n/a | instancemethod_new, /* tp_new */ |
---|
648 | n/a | }; |
---|