sipconverthelpers.h

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/* This software and supporting documentation are distributed by
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 * This software is governed by the CeCILL license version 2 under
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 * You can  use, modify and/or redistribute the software under the
 * terms of the CeCILL license version 2 as circulated by CEA, CNRS
 * and INRIA at the following URL "http://www.cecill.info".
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 */
 
#ifndef PYANATOMIST_SIPCONVERTHELPERS_H
#define PYANATOMIST_SIPCONVERTHELPERS_H
 
#include <sip.h>
 
namespace anatomist
{
  class AObject;
  class AWindow;
  class Referential;
  class Transformation;
 
 
  template <typename T> inline
      int sipConvertToTypeCodeFromInternalRep( PyObject *sipPy,
                                               sipTypeDef *siptype,
                                               PyObject *sipTransferObj,
                                               int *&sipIsErr, T **&sipCppPtr )
  {
    if (!sipIsErr)
    {
      // check type
      if( sipCanConvertToType( sipPy, siptype,
          SIP_NOT_NONE | SIP_NO_CONVERTORS ) )
        return 1;
      if( PyObject_HasAttrString( sipPy, "internalRep" ) )
      {
        PyObject *internalRep = PyObject_GetAttrString( sipPy, "internalRep" );
        if( internalRep )
        {
          bool x = sipCanConvertToType( internalRep, siptype,
                                        SIP_NOT_NONE | SIP_NO_CONVERTORS );
          Py_DECREF( internalRep );
          return x;
        }
      }
      return 0;
    }
 
    if( sipPy == Py_None )
    {
      *sipCppPtr = 0;
      return 0;
    }
 
    int state = 0;
 
    T * obj = 0;
    if( sipCanConvertToType( sipPy, siptype, SIP_NO_CONVERTORS ) )
      obj = (T *)
          sipConvertToType( sipPy, siptype, sipTransferObj,
                            SIP_NO_CONVERTORS, &state, sipIsErr );
    if( !obj && PyObject_HasAttrString( sipPy, "internalRep" ) )
    {
      PyObject *internalRep = PyObject_GetAttrString( sipPy, "internalRep" );
      if( internalRep )
      {
        obj = (T *)
            sipConvertToType( internalRep, siptype, sipTransferObj,
                              SIP_NO_CONVERTORS, &state, sipIsErr );
        Py_DECREF( internalRep );
      }
    }
    if( *sipIsErr && obj )
    {
      sipReleaseType( obj, sipType_anatomist_Referential, state );
      obj = 0;
    }
    else if( obj )
    {
      *sipCppPtr = obj;
      return 0; // in any case it's an existing instance, not a temporary
    }
 
    *sipIsErr = 1;
    return 0;
  }
 
}
 
 
#endif