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annotate oct-py-object.h @ 397:fc0fb94161de

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Add a wrapper for PyObject pointers (fixes issue #81) * oct-py-object.h: Added the new class python_object * oct-py-util.cc: Edited the existing code to use the new wrapper * Makefile.am: Add the new header to the list of headers
author Abhinav Tripathi <genuinelucifer@gmail.com>
date Thu, 13 Apr 2017 02:10:48 -0700
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children 3905052ebe1d
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1 /*
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2
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3 Copyright (C) 2017 Abhinav Tripathi
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4
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5 This file is part of Pytave.
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6
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7 Pytave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Pytave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Pytave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if ! defined (pytave_oct_py_object_h)
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24 #define pytave_oct_py_object_h
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25
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26 namespace pytave
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27 {
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28
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29 class python_object
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30 {
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31 public:
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32 python_object (PyObject *obj = 0)
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33 {
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34 pyobj = obj;
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35 isowned = pyobj != 0;
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36 }
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37
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38 python_object (const python_object& oth)
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39 {
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40 pyobj = oth.pyobj;
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41 isowned = oth.isowned;
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42 if (isowned)
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43 Py_INCREF (pyobj);
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44 }
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45
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46 ~python_object ()
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47 {
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48 if (isowned)
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49 Py_DECREF (pyobj);
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50 }
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51
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52 python_object& operator= (const python_object& oth)
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53 {
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54 if (isowned)
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55 Py_DECREF (pyobj);
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56 pyobj = oth.pyobj;
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57 isowned = oth.isowned;
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58 if (isowned)
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59 Py_INCREF (pyobj);
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60 return *this;
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61 }
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62
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63 python_object& operator= (PyObject *obj)
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64 {
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65 if (isowned)
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66 Py_DECREF (pyobj);
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67 pyobj = obj;
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68 isowned = pyobj != 0;
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69 if (isowned)
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70 Py_INCREF (pyobj);
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71 return *this;
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72 }
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73
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74 operator bool () const
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75 {
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76 return isowned;
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77 }
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78
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79 operator PyObject *()
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80 {
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81 return pyobj;
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82 }
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83
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84 bool is_none ()
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85 {
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86 return pyobj && pyobj == Py_None;
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87 }
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88
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89 PyObject *release ()
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90 {
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91 isowned = false;
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92 PyObject *ret = pyobj;
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93 pyobj = 0;
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94 return ret;
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95 }
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96
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97 private:
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98 PyObject *pyobj;
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99 bool isowned;
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100 };
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101
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102 }
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103
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104 #endif
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105