SALOMESDS_Auto.hxx

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// Copyright (C) 2018-2025  CEA, EDF, OPEN CASCADE
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
// Author : Anthony GEAY (EDF R&D)
 
#pragma once
 
#include "Python.h"
 
namespace SALOME
{
  class AutoPyRef
  {
  public:
    AutoPyRef(PyObject *pyobj=nullptr):_pyobj(pyobj) { }
    ~AutoPyRef() { release(); }
    AutoPyRef(const AutoPyRef& other):_pyobj(other._pyobj) { if(_pyobj) Py_XINCREF(_pyobj); }
    AutoPyRef(AutoPyRef&& other):_pyobj(other._pyobj) { other._pyobj=nullptr; }
    AutoPyRef& operator=(const AutoPyRef& other) { if(_pyobj==other._pyobj) return *this; release(); _pyobj=other._pyobj; Py_XINCREF(_pyobj); return *this; }
    AutoPyRef& operator=(AutoPyRef&& other) { if(_pyobj==other._pyobj) return *this; release(); _pyobj=other._pyobj; other._pyobj=nullptr; return *this; }
    operator PyObject *() { return _pyobj; }
    void set(PyObject *pyobj) { if(pyobj==_pyobj) return ; release(); _pyobj=pyobj; }
    PyObject *get() { return _pyobj; }
    bool isNull() const { return _pyobj==nullptr; }
    PyObject *retn() { if(_pyobj) Py_XINCREF(_pyobj); return _pyobj; }
  private:
    void release() { if(_pyobj) Py_XDECREF(_pyobj); _pyobj=nullptr; }
  private:
    PyObject *_pyobj;
  };
}