88 lines
3 KiB
C++
88 lines
3 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*****************************************************************************/
|
|
#ifndef MAPNIK_PYTHON_BINDING_ENUMERATION_INCLUDED
|
|
#define MAPNIK_PYTHON_BINDING_ENUMERATION_INCLUDED
|
|
|
|
#include <boost/python/converter/registered.hpp> // for registered
|
|
#include <boost/python/enum.hpp> // for enum_
|
|
#include <boost/python/implicit.hpp> // for implicitly_convertible
|
|
#include <boost/python/to_python_converter.hpp>
|
|
|
|
namespace mapnik {
|
|
|
|
template <typename EnumWrapper>
|
|
class enumeration_ :
|
|
public boost::python::enum_<typename EnumWrapper::native_type>
|
|
{
|
|
// some short cuts
|
|
typedef boost::python::enum_<typename EnumWrapper::native_type> base_type;
|
|
typedef typename EnumWrapper::native_type native_type;
|
|
public:
|
|
enumeration_() :
|
|
base_type( EnumWrapper::get_name().c_str() )
|
|
{
|
|
init();
|
|
}
|
|
enumeration_(const char * python_alias) :
|
|
base_type( python_alias )
|
|
{
|
|
init();
|
|
}
|
|
enumeration_(const char * python_alias, const char * doc) :
|
|
base_type( python_alias, doc )
|
|
{
|
|
init();
|
|
}
|
|
|
|
private:
|
|
struct converter
|
|
{
|
|
static PyObject* convert(EnumWrapper const& v)
|
|
{
|
|
// Redirect conversion to a static method of our base class's
|
|
// base class. A free template converter will not work because
|
|
// the base_type::base typedef is protected.
|
|
// Lets hope MSVC agrees that this is legal C++
|
|
using namespace boost::python::converter;
|
|
return base_type::base::to_python(
|
|
registered<native_type>::converters.m_class_object
|
|
, static_cast<long>( v ));
|
|
|
|
}
|
|
};
|
|
|
|
void init() {
|
|
boost::python::implicitly_convertible<native_type, EnumWrapper>();
|
|
boost::python::to_python_converter<EnumWrapper, converter >();
|
|
|
|
for (unsigned i = 0; i < EnumWrapper::MAX; ++i)
|
|
{
|
|
// Register the strings already defined for this enum.
|
|
base_type::value( EnumWrapper::get_string( i ), native_type( i ) );
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
} // end of namespace mapnik
|
|
|
|
#endif // MAPNIK_PYTHON_BINDING_ENUMERATION_INCLUDED
|