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/*****************************************************************************
*
* 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
*
*****************************************************************************/
//$Id$
// boost
#include <boost/python/suite/indexing/indexing_suite.hpp>
#include <boost/python/iterator.hpp>
#include <boost/python/call_method.hpp>
#include <boost/python/tuple.hpp>
#include <boost/python.hpp>
// mapnik
#include <mapnik/feature.hpp>
namespace boost { namespace python {
struct value_converter : public boost::static_visitor<PyObject*>
{
PyObject * operator() (int val) const
{
return ::PyInt_FromLong(val);
}
PyObject * operator() (double val) const
{
return ::PyFloat_FromDouble(val);
}
PyObject * operator() (std::wstring const& s) const
{
return ::PyUnicode_FromWideChar(s.data(),implicit_cast<ssize_t>(s.size()));
}
};
struct mapnik_value_to_python
{
static PyObject* convert(mapnik::value const& v)
{
return boost::apply_visitor(value_converter(),v.base());
}
};
// Forward declaration
template <class Container, bool NoProxy, class DerivedPolicies>
class map_indexing_suite2;
namespace detail
{
template <class Container, bool NoProxy>
class final_map_derived_policies
: public map_indexing_suite2<Container,
NoProxy, final_map_derived_policies<Container, NoProxy> > {};
}
template <
class Container,
bool NoProxy = false,
class DerivedPolicies
= detail::final_map_derived_policies<Container, NoProxy> >
class map_indexing_suite2
: public indexing_suite<
Container
, DerivedPolicies
, NoProxy
, true
, typename Container::value_type::second_type
, typename Container::key_type
, typename Container::key_type
>
{
public:
typedef typename Container::value_type value_type;
typedef typename Container::value_type::second_type data_type;
typedef typename Container::key_type key_type;
typedef typename Container::key_type index_type;
typedef typename Container::size_type size_type;
typedef typename Container::difference_type difference_type;
template <class Class>
static void
extension_def(Class& cl)
{
}
static data_type&
get_item(Container& container, index_type i_)
{
typename Container::iterator i = container.find(i_);
if (i == container.end())
{
PyErr_SetString(PyExc_KeyError, "Invalid key");
throw_error_already_set();
}
return i->second;
}
static void
set_item(Container& container, index_type i, data_type const& v)
{
container[i] = v;
}
static void
delete_item(Container& container, index_type i)
{
container.erase(i);
}
static size_t
size(Container& container)
{
return container.size();
}
static bool
contains(Container& container, key_type const& key)
{
return container.find(key) != container.end();
}
static bool
compare_index(Container& container, index_type a, index_type b)
{
return container.key_comp()(a, b);
}
static index_type
convert_index(Container& /*container*/, PyObject* i_)
{
extract<key_type const&> i(i_);
if (i.check())
{
return i();
}
else
{
extract<key_type> i(i_);
if (i.check())
return i();
}
PyErr_SetString(PyExc_TypeError, "Invalid index type");
throw_error_already_set();
return index_type();
}
};
template <typename T1, typename T2>
struct std_pair_to_tuple
{
static PyObject* convert(std::pair<T1, T2> const& p)
{
return boost::python::incref(
boost::python::make_tuple(p.first, p.second).ptr());
}
};
template <typename T1, typename T2>
struct std_pair_to_python_converter
{
std_pair_to_python_converter()
{
boost::python::to_python_converter<
std::pair<T1, T2>,
std_pair_to_tuple<T1, T2> >();
}
};
}
}
void export_feature()
{
using namespace boost::python;
using mapnik::Feature;
std_pair_to_python_converter<std::string const,mapnik::value>();
to_python_converter<mapnik::value,mapnik_value_to_python>();
class_<Feature,boost::shared_ptr<Feature>,
boost::noncopyable>("Feature",no_init)
.def("id",&Feature::id)
.def("__str__",&Feature::to_string)
.add_property("properties",
make_function(&Feature::props,return_value_policy<reference_existing_object>()))
;
class_<std::map<std::string, mapnik::value> >("Properties")
.def(map_indexing_suite2<std::map<std::string, mapnik::value>, true >())
.def("iteritems",iterator<std::map<std::string,mapnik::value> > ())
;
}
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