| 1 | n/a | // namespace object implementation |
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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 | |
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| 7 | n/a | typedef struct { |
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| 8 | n/a | PyObject_HEAD |
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| 9 | n/a | PyObject *ns_dict; |
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| 10 | n/a | } _PyNamespaceObject; |
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| 11 | n/a | |
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| 12 | n/a | |
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| 13 | n/a | static PyMemberDef namespace_members[] = { |
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| 14 | n/a | {"__dict__", T_OBJECT, offsetof(_PyNamespaceObject, ns_dict), READONLY}, |
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| 15 | n/a | {NULL} |
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| 16 | n/a | }; |
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| 17 | n/a | |
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| 18 | n/a | |
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| 19 | n/a | // Methods |
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| 20 | n/a | |
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| 21 | n/a | static PyObject * |
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| 22 | n/a | namespace_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
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| 23 | n/a | { |
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| 24 | n/a | PyObject *self; |
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| 25 | n/a | |
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| 26 | n/a | assert(type != NULL && type->tp_alloc != NULL); |
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| 27 | n/a | self = type->tp_alloc(type, 0); |
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| 28 | n/a | if (self != NULL) { |
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| 29 | n/a | _PyNamespaceObject *ns = (_PyNamespaceObject *)self; |
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| 30 | n/a | ns->ns_dict = PyDict_New(); |
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| 31 | n/a | if (ns->ns_dict == NULL) { |
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| 32 | n/a | Py_DECREF(ns); |
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| 33 | n/a | return NULL; |
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| 34 | n/a | } |
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| 35 | n/a | } |
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| 36 | n/a | return self; |
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| 37 | n/a | } |
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| 38 | n/a | |
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| 39 | n/a | |
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| 40 | n/a | static int |
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| 41 | n/a | namespace_init(_PyNamespaceObject *ns, PyObject *args, PyObject *kwds) |
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| 42 | n/a | { |
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| 43 | n/a | // ignore args if it's NULL or empty |
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| 44 | n/a | if (args != NULL) { |
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| 45 | n/a | Py_ssize_t argcount = PyObject_Size(args); |
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| 46 | n/a | if (argcount < 0) |
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| 47 | n/a | return -1; |
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| 48 | n/a | else if (argcount > 0) { |
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| 49 | n/a | PyErr_Format(PyExc_TypeError, "no positional arguments expected"); |
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| 50 | n/a | return -1; |
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| 51 | n/a | } |
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| 52 | n/a | } |
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| 53 | n/a | if (kwds == NULL) |
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| 54 | n/a | return 0; |
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| 55 | n/a | return PyDict_Update(ns->ns_dict, kwds); |
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| 56 | n/a | } |
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| 57 | n/a | |
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| 58 | n/a | |
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| 59 | n/a | static void |
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| 60 | n/a | namespace_dealloc(_PyNamespaceObject *ns) |
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| 61 | n/a | { |
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| 62 | n/a | PyObject_GC_UnTrack(ns); |
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| 63 | n/a | Py_CLEAR(ns->ns_dict); |
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| 64 | n/a | Py_TYPE(ns)->tp_free((PyObject *)ns); |
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| 65 | n/a | } |
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| 66 | n/a | |
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| 67 | n/a | |
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| 68 | n/a | static PyObject * |
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| 69 | n/a | namespace_repr(PyObject *ns) |
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| 70 | n/a | { |
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| 71 | n/a | int i, loop_error = 0; |
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| 72 | n/a | PyObject *pairs = NULL, *d = NULL, *keys = NULL, *keys_iter = NULL; |
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| 73 | n/a | PyObject *key; |
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| 74 | n/a | PyObject *separator, *pairsrepr, *repr = NULL; |
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| 75 | n/a | const char * name; |
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| 76 | n/a | |
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| 77 | n/a | name = (Py_TYPE(ns) == &_PyNamespace_Type) ? "namespace" |
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| 78 | n/a | : ns->ob_type->tp_name; |
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| 79 | n/a | |
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| 80 | n/a | i = Py_ReprEnter(ns); |
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| 81 | n/a | if (i != 0) { |
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| 82 | n/a | return i > 0 ? PyUnicode_FromFormat("%s(...)", name) : NULL; |
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| 83 | n/a | } |
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| 84 | n/a | |
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| 85 | n/a | pairs = PyList_New(0); |
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| 86 | n/a | if (pairs == NULL) |
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| 87 | n/a | goto error; |
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| 88 | n/a | |
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| 89 | n/a | d = ((_PyNamespaceObject *)ns)->ns_dict; |
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| 90 | n/a | assert(d != NULL); |
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| 91 | n/a | Py_INCREF(d); |
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| 92 | n/a | |
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| 93 | n/a | keys = PyDict_Keys(d); |
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| 94 | n/a | if (keys == NULL) |
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| 95 | n/a | goto error; |
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| 96 | n/a | if (PyList_Sort(keys) != 0) |
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| 97 | n/a | goto error; |
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| 98 | n/a | |
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| 99 | n/a | keys_iter = PyObject_GetIter(keys); |
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| 100 | n/a | if (keys_iter == NULL) |
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| 101 | n/a | goto error; |
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| 102 | n/a | |
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| 103 | n/a | while ((key = PyIter_Next(keys_iter)) != NULL) { |
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| 104 | n/a | if (PyUnicode_Check(key) && PyUnicode_GET_LENGTH(key) > 0) { |
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| 105 | n/a | PyObject *value, *item; |
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| 106 | n/a | |
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| 107 | n/a | value = PyDict_GetItem(d, key); |
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| 108 | n/a | assert(value != NULL); |
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| 109 | n/a | |
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| 110 | n/a | item = PyUnicode_FromFormat("%S=%R", key, value); |
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| 111 | n/a | if (item == NULL) { |
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| 112 | n/a | loop_error = 1; |
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| 113 | n/a | } |
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| 114 | n/a | else { |
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| 115 | n/a | loop_error = PyList_Append(pairs, item); |
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| 116 | n/a | Py_DECREF(item); |
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| 117 | n/a | } |
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| 118 | n/a | } |
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| 119 | n/a | |
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| 120 | n/a | Py_DECREF(key); |
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| 121 | n/a | if (loop_error) |
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| 122 | n/a | goto error; |
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| 123 | n/a | } |
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| 124 | n/a | |
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| 125 | n/a | separator = PyUnicode_FromString(", "); |
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| 126 | n/a | if (separator == NULL) |
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| 127 | n/a | goto error; |
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| 128 | n/a | |
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| 129 | n/a | pairsrepr = PyUnicode_Join(separator, pairs); |
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| 130 | n/a | Py_DECREF(separator); |
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| 131 | n/a | if (pairsrepr == NULL) |
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| 132 | n/a | goto error; |
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| 133 | n/a | |
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| 134 | n/a | repr = PyUnicode_FromFormat("%s(%S)", name, pairsrepr); |
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| 135 | n/a | Py_DECREF(pairsrepr); |
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| 136 | n/a | |
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| 137 | n/a | error: |
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| 138 | n/a | Py_XDECREF(pairs); |
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| 139 | n/a | Py_XDECREF(d); |
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| 140 | n/a | Py_XDECREF(keys); |
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| 141 | n/a | Py_XDECREF(keys_iter); |
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| 142 | n/a | Py_ReprLeave(ns); |
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| 143 | n/a | |
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| 144 | n/a | return repr; |
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| 145 | n/a | } |
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| 146 | n/a | |
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| 147 | n/a | |
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| 148 | n/a | static int |
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| 149 | n/a | namespace_traverse(_PyNamespaceObject *ns, visitproc visit, void *arg) |
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| 150 | n/a | { |
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| 151 | n/a | Py_VISIT(ns->ns_dict); |
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| 152 | n/a | return 0; |
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| 153 | n/a | } |
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| 154 | n/a | |
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| 155 | n/a | |
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| 156 | n/a | static int |
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| 157 | n/a | namespace_clear(_PyNamespaceObject *ns) |
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| 158 | n/a | { |
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| 159 | n/a | Py_CLEAR(ns->ns_dict); |
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| 160 | n/a | return 0; |
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| 161 | n/a | } |
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| 162 | n/a | |
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| 163 | n/a | |
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| 164 | n/a | static PyObject * |
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| 165 | n/a | namespace_richcompare(PyObject *self, PyObject *other, int op) |
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| 166 | n/a | { |
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| 167 | n/a | if (PyObject_TypeCheck(self, &_PyNamespace_Type) && |
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| 168 | n/a | PyObject_TypeCheck(other, &_PyNamespace_Type)) |
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| 169 | n/a | return PyObject_RichCompare(((_PyNamespaceObject *)self)->ns_dict, |
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| 170 | n/a | ((_PyNamespaceObject *)other)->ns_dict, op); |
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| 171 | n/a | Py_RETURN_NOTIMPLEMENTED; |
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| 172 | n/a | } |
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| 173 | n/a | |
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| 174 | n/a | |
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| 175 | n/a | PyDoc_STRVAR(namespace_reduce__doc__, "Return state information for pickling"); |
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| 176 | n/a | |
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| 177 | n/a | static PyObject * |
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| 178 | n/a | namespace_reduce(_PyNamespaceObject *ns) |
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| 179 | n/a | { |
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| 180 | n/a | PyObject *result, *args = PyTuple_New(0); |
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| 181 | n/a | |
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| 182 | n/a | if (!args) |
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| 183 | n/a | return NULL; |
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| 184 | n/a | |
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| 185 | n/a | result = PyTuple_Pack(3, (PyObject *)Py_TYPE(ns), args, ns->ns_dict); |
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| 186 | n/a | Py_DECREF(args); |
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| 187 | n/a | return result; |
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| 188 | n/a | } |
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| 189 | n/a | |
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| 190 | n/a | |
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| 191 | n/a | static PyMethodDef namespace_methods[] = { |
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| 192 | n/a | {"__reduce__", (PyCFunction)namespace_reduce, METH_NOARGS, |
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| 193 | n/a | namespace_reduce__doc__}, |
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| 194 | n/a | {NULL, NULL} // sentinel |
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| 195 | n/a | }; |
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| 196 | n/a | |
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| 197 | n/a | |
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| 198 | n/a | PyDoc_STRVAR(namespace_doc, |
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| 199 | n/a | "A simple attribute-based namespace.\n\ |
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| 200 | n/a | \n\ |
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| 201 | n/a | SimpleNamespace(**kwargs)"); |
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| 202 | n/a | |
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| 203 | n/a | PyTypeObject _PyNamespace_Type = { |
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| 204 | n/a | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
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| 205 | n/a | "types.SimpleNamespace", /* tp_name */ |
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| 206 | n/a | sizeof(_PyNamespaceObject), /* tp_size */ |
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| 207 | n/a | 0, /* tp_itemsize */ |
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| 208 | n/a | (destructor)namespace_dealloc, /* tp_dealloc */ |
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| 209 | n/a | 0, /* tp_print */ |
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| 210 | n/a | 0, /* tp_getattr */ |
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| 211 | n/a | 0, /* tp_setattr */ |
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| 212 | n/a | 0, /* tp_reserved */ |
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| 213 | n/a | (reprfunc)namespace_repr, /* tp_repr */ |
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| 214 | n/a | 0, /* tp_as_number */ |
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| 215 | n/a | 0, /* tp_as_sequence */ |
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| 216 | n/a | 0, /* tp_as_mapping */ |
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| 217 | n/a | 0, /* tp_hash */ |
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| 218 | n/a | 0, /* tp_call */ |
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| 219 | n/a | 0, /* tp_str */ |
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| 220 | n/a | PyObject_GenericGetAttr, /* tp_getattro */ |
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| 221 | n/a | PyObject_GenericSetAttr, /* tp_setattro */ |
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| 222 | n/a | 0, /* tp_as_buffer */ |
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| 223 | n/a | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | |
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| 224 | n/a | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
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| 225 | n/a | namespace_doc, /* tp_doc */ |
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| 226 | n/a | (traverseproc)namespace_traverse, /* tp_traverse */ |
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| 227 | n/a | (inquiry)namespace_clear, /* tp_clear */ |
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| 228 | n/a | namespace_richcompare, /* tp_richcompare */ |
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| 229 | n/a | 0, /* tp_weaklistoffset */ |
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| 230 | n/a | 0, /* tp_iter */ |
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| 231 | n/a | 0, /* tp_iternext */ |
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| 232 | n/a | namespace_methods, /* tp_methods */ |
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| 233 | n/a | namespace_members, /* tp_members */ |
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| 234 | n/a | 0, /* tp_getset */ |
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| 235 | n/a | 0, /* tp_base */ |
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| 236 | n/a | 0, /* tp_dict */ |
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| 237 | n/a | 0, /* tp_descr_get */ |
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| 238 | n/a | 0, /* tp_descr_set */ |
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| 239 | n/a | offsetof(_PyNamespaceObject, ns_dict), /* tp_dictoffset */ |
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| 240 | n/a | (initproc)namespace_init, /* tp_init */ |
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| 241 | n/a | PyType_GenericAlloc, /* tp_alloc */ |
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| 242 | n/a | (newfunc)namespace_new, /* tp_new */ |
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| 243 | n/a | PyObject_GC_Del, /* tp_free */ |
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| 244 | n/a | }; |
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| 245 | n/a | |
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| 246 | n/a | |
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| 247 | n/a | PyObject * |
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| 248 | n/a | _PyNamespace_New(PyObject *kwds) |
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| 249 | n/a | { |
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| 250 | n/a | PyObject *ns = namespace_new(&_PyNamespace_Type, NULL, NULL); |
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| 251 | n/a | if (ns == NULL) |
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| 252 | n/a | return NULL; |
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| 253 | n/a | |
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| 254 | n/a | if (kwds == NULL) |
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| 255 | n/a | return ns; |
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| 256 | n/a | if (PyDict_Update(((_PyNamespaceObject *)ns)->ns_dict, kwds) != 0) { |
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| 257 | n/a | Py_DECREF(ns); |
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| 258 | n/a | return NULL; |
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| 259 | n/a | } |
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| 260 | n/a | |
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| 261 | n/a | return (PyObject *)ns; |
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| 262 | n/a | } |
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