overload_link.h

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/** @file
 *  @author Bram de Greve (bram@cocamware.com)
 *  @author Tom De Muer (tom@cocamware.com)
 *
 *  *** BEGIN LICENSE INFORMATION ***
 *  
 *  The contents of this file are subject to the Common Public Attribution License 
 *  Version 1.0 (the "License"); you may not use this file except in compliance with 
 *  the License. You may obtain a copy of the License at 
 *  http://lass.sourceforge.net/cpal-license. The License is based on the 
 *  Mozilla Public License Version 1.1 but Sections 14 and 15 have been added to cover 
 *  use of software over a computer network and provide for limited attribution for 
 *  the Original Developer. In addition, Exhibit A has been modified to be consistent 
 *  with Exhibit B.
 *  
 *  Software distributed under the License is distributed on an "AS IS" basis, WITHOUT 
 *  WARRANTY OF ANY KIND, either express or implied. See the License for the specific 
 *  language governing rights and limitations under the License.
 *  
 *  The Original Code is LASS - Library of Assembled Shared Sources.
 *  
 *  The Initial Developer of the Original Code is Bram de Greve and Tom De Muer.
 *  The Original Developer is the Initial Developer.
 *  
 *  All portions of the code written by the Initial Developer are:
 *  Copyright (C) 2004-2025 the Initial Developer.
 *  All Rights Reserved.
 *  
 *  Contributor(s):
 *
 *  Alternatively, the contents of this file may be used under the terms of the 
 *  GNU General Public License Version 2 or later (the GPL), in which case the 
 *  provisions of GPL are applicable instead of those above.  If you wish to allow use
 *  of your version of this file only under the terms of the GPL and not to allow 
 *  others to use your version of this file under the CPAL, indicate your decision by 
 *  deleting the provisions above and replace them with the notice and other 
 *  provisions required by the GPL License. If you do not delete the provisions above,
 *  a recipient may use your version of this file under either the CPAL or the GPL.
 *  
 *  *** END LICENSE INFORMATION ***
 */
 
 
#ifndef LASS_GUARDIAN_OF_INCLUSION_PYTHON_OVERLOAD_LINK_H
#define LASS_GUARDIAN_OF_INCLUSION_PYTHON_OVERLOAD_LINK_H
 
#include "python_common.h"
 
namespace lass
{
    namespace python
    {
        namespace impl
        {
            /** @ingroup Python
             *  @internal
             */
            class LASS_PYTHON_DLL OverloadLink
            {
            public:
                enum Signature
                {
                    sNull,
                    sPyCFunction,
                    sBinary,
                    sTernary,
                    sSsizeArg,
                    sSsizeSsizeArg,
                    sSsizeObjArg,
                    sSsizeSsizeObjArg,
                    sObjObj,
                    sObjObjArg,
                    sGetIterFunc,
                    sIterNextFunc,
                    sArgKw
                };
                OverloadLink();
                void setNull();
                void setPyCFunction(PyCFunction iOverload);
                void setBinaryfunc(binaryfunc iOverload);
                void setTernaryfunc(ternaryfunc iOverload);
                
                void setSsizeArgfunc(ssizeargfunc iOverload);
                void setSsizeSsizeArgfunc(ssizessizeargfunc iOverload);
                void setSsizeObjArgProcfunc(ssizeobjargproc iOverload);
                void setSsizeSsizeObjArgProcfunc(ssizessizeobjargproc iOverload);
                void setObjObjProcfunc(objobjproc iOverload);
                void setObjObjArgProcfunc(objobjargproc iOverload);
                void setGetIterFunc(getiterfunc iOverload);
                void setIterNextFunc(iternextfunc iOverload);
 
                void setArgKwfunc(ternaryfunc iOverload);
 
                bool operator()(PyObject* iSelf, PyObject* iArgs, 
                    PyObject*& result) const;
            private:
                PyObject* call(PyObject* iSelf, PyObject* iArgs) const;
                union
                {
                    PyCFunction pyCFunction_;
                    binaryfunc binaryfunc_;
                    ternaryfunc ternaryfunc_;
 
                    ssizeargfunc ssizeargfunc_;
                    ssizessizeargfunc ssizessizeargfunc_;
                    ssizeobjargproc ssizeobjargproc_;
                    ssizessizeobjargproc ssizessizeobjargproc_;
                    objobjproc objobjproc_;
                    objobjargproc objobjargproc_;
 
                    getiterfunc getiterfunc_;
                    iternextfunc iternextfunc_;
                };
                Signature signature_;
            };
        }
    }
}
 
#endif