1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "PyVTKMethodDescriptor.h"
#include "vtkABINamespace.h"
#include "vtkPythonUtil.h"
#include <structmember.h> // a python header
// Silence warning like
// "dereferencing type-punned pointer will break strict-aliasing rules"
// it happens because this kind of expression: (long *)&ptr
#if defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
#endif
// Required for Python 2.5 through Python 2.7
#ifndef PyDescr_TYPE
#define PyDescr_TYPE(x) (((PyDescrObject*)(x))->d_type)
#define PyDescr_NAME(x) (((PyDescrObject*)(x))->d_name)
#endif
//------------------------------------------------------------------------------
// C API
PyObject* PyVTKMethodDescriptor_New(PyTypeObject* pytype, PyMethodDef* meth)
{
PyMethodDescrObject* descr =
(PyMethodDescrObject*)PyType_GenericAlloc(&PyVTKMethodDescriptor_Type, 0);
if (descr)
{
Py_XINCREF(pytype);
PyDescr_TYPE(descr) = pytype;
PyDescr_NAME(descr) = PyUnicode_InternFromString(meth->ml_name);
descr->d_method = meth;
if (!PyDescr_NAME(descr))
{
Py_DECREF(descr);
descr = nullptr;
}
}
return (PyObject*)descr;
}
//------------------------------------------------------------------------------
// Object protocol
static void PyVTKMethodDescriptor_Delete(PyObject* ob)
{
PyMethodDescrObject* descr = (PyMethodDescrObject*)ob;
PyObject_GC_UnTrack(descr);
Py_XDECREF(PyDescr_TYPE(descr));
Py_XDECREF(PyDescr_NAME(descr));
PyObject_GC_Del(descr);
}
static PyObject* PyVTKMethodDescriptor_Repr(PyObject* ob)
{
PyMethodDescrObject* descr = (PyMethodDescrObject*)ob;
return PyUnicode_FromFormat("<method \'%U\' of \'%s\' objects>", PyDescr_NAME(descr),
vtkPythonUtil::GetTypeName(PyDescr_TYPE(descr)));
}
static int PyVTKMethodDescriptor_Traverse(PyObject* ob, visitproc visit, void* arg)
{
PyMethodDescrObject* descr = (PyMethodDescrObject*)ob;
Py_VISIT(PyDescr_TYPE(descr));
return 0;
}
static PyObject* PyVTKMethodDescriptor_Call(PyObject* ob, PyObject* args, PyObject* kwds)
{
PyMethodDescrObject* descr = (PyMethodDescrObject*)ob;
PyObject* result = nullptr;
PyObject* func = PyCFunction_New(descr->d_method, (PyObject*)PyDescr_TYPE(descr));
if (func)
{
result = PyObject_Call(func, args, kwds);
Py_DECREF(func);
}
return result;
}
static PyObject* PyVTKMethodDescriptor_Get(PyObject* self, PyObject* obj, PyObject*)
{
PyMethodDescrObject* descr = (PyMethodDescrObject*)self;
if (obj == nullptr)
{
// If no object to bind to, return the descriptor itself
Py_INCREF(self);
return self;
}
if (PyObject_TypeCheck(obj, PyDescr_TYPE(descr)))
{
// Bind the method to the object
return PyCFunction_New(descr->d_method, obj);
}
PyErr_Format(PyExc_TypeError, "descriptor '%U' for '%s' objects doesn't apply to '%s' object",
PyDescr_NAME(descr), vtkPythonUtil::GetTypeName(PyDescr_TYPE(descr)),
vtkPythonUtil::GetTypeNameForObject(obj));
return nullptr;
}
static PyObject* PyVTKMethodDescriptor_GetDoc(PyObject* ob, void*)
{
PyMethodDescrObject* descr = (PyMethodDescrObject*)ob;
if (descr->d_method->ml_doc == nullptr)
{
Py_INCREF(Py_None);
return Py_None;
}
return PyUnicode_FromString(descr->d_method->ml_doc);
}
#if PY_VERSION_HEX >= 0x03070000
#define pystr(x) x
#else
#define pystr(x) const_cast<char*>(x)
#endif
static PyGetSetDef PyVTKMethodDescriptor_GetSet[] = {
{ pystr("__doc__"), PyVTKMethodDescriptor_GetDoc, nullptr, nullptr, nullptr },
{ nullptr, nullptr, nullptr, nullptr, nullptr }
};
static PyMemberDef PyVTKMethodDescriptor_Members[] = {
{ pystr("__objclass__"), T_OBJECT, offsetof(PyDescrObject, d_type), READONLY, nullptr },
{ pystr("__name__"), T_OBJECT, offsetof(PyDescrObject, d_name), READONLY, nullptr },
{ nullptr, 0, 0, 0, nullptr }
};
#ifdef VTK_PYTHON_NEEDS_DEPRECATION_WARNING_SUPPRESSION
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
//------------------------------------------------------------------------------
// clang-format off
PyTypeObject PyVTKMethodDescriptor_Type = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
"vtkmodules.vtkCommonCore.method_descriptor", // tp_name
sizeof(PyMethodDescrObject), // tp_basicsize
0, // tp_itemsize
PyVTKMethodDescriptor_Delete, // tp_dealloc
#if PY_VERSION_HEX >= 0x03080000
//Prior to Py3.8, this member was a function pointer,
//but as of Py3.8 it is an integer
//(and therefore incompatible with nullptr).
0, // tp_vectorcall_offset
#else
nullptr, // tp_print
#endif
nullptr, // tp_getattr
nullptr, // tp_setattr
nullptr, // tp_compare
PyVTKMethodDescriptor_Repr, // tp_repr
nullptr, // tp_as_number
nullptr, // tp_as_sequence
nullptr, // tp_as_mapping
nullptr, // tp_hash
PyVTKMethodDescriptor_Call, // tp_call
nullptr, // tp_string
PyObject_GenericGetAttr, // tp_getattro
nullptr, // tp_setattro
nullptr, // tp_as_buffer
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, // tp_flags
nullptr, // tp_doc
PyVTKMethodDescriptor_Traverse, // tp_traverse
nullptr, // tp_clear
nullptr, // tp_richcompare
0, // tp_weaklistoffset
nullptr, // tp_iter
nullptr, // tp_iternext
nullptr, // tp_methods
PyVTKMethodDescriptor_Members, // tp_members
PyVTKMethodDescriptor_GetSet, // tp_getset
nullptr, // tp_base
nullptr, // tp_dict
PyVTKMethodDescriptor_Get, // tp_descr_get
nullptr, // tp_descr_set
0, // tp_dictoffset
nullptr, // tp_init
nullptr, // tp_alloc
nullptr, // tp_new
nullptr, // tp_free
nullptr, // tp_is_gc
nullptr, // tp_bases
nullptr, // tp_mro
nullptr, // tp_cache
nullptr, // tp_subclasses
nullptr, // tp_weaklist
VTK_WRAP_PYTHON_SUPPRESS_UNINITIALIZED };
// clang-format on
|
