Since I didn't find any solution when using map_indexing_suite, I wrote a
simple wrapping that works in my case :
==============
#include <map>
#include <boost/python.hpp>
namespace myProject {
template<class Key, class Val>
struct map_item {
typedef std::map<Key,Val> Map;
static Val get(Map & self, const Key idx) {
if (self.find(idx) == self.end()) {
PyErr_SetString(PyExc_KeyError,"Map key not found");
throw_error_already_set();
}
return self[idx];
}
static void set(Map& self, const Key idx, const Val val) { self[idx]=val; }
static void del(Map& self, const Key n) { self.erase(n); }
static bool in (Map const& self, const Key n) { return
self.find(n) != self.end(); }
static list keys(Map const& self) {
list t;
for(typename Map::const_iterator it = self.begin() ; it!=self.end() ;
++it)
t.append(it->first);
return t;
}
static list values(Map const& self) {
list t;
for(typename Map::const_iterator it=self.begin(); it!=self.end(); ++it)
t.append(it->second);
return t;
}
static list items(Map const& self) {
list t;
for(typename Map::const_iterator it=self.begin(); it!=self.end(); ++it)
t.append( make_tuple(it->first, it->second) );
return t;
}
};
#define STL_MAP_WRAPPING_PTR(KEY_TYPE, VALUE_TYPE, PYTHON_TYPE_NAME)
\
class_<std::pair<const KEY_TYPE, VALUE_TYPE>
>((std::string(PYTHON_TYPE_NAME)+std::string("DATA")).c_str()) \
.def_readonly ("key" , &std::pair<const KEY_TYPE, VALUE_TYPE>::first )
\
.def_readwrite("value", &std::pair<const KEY_TYPE, VALUE_TYPE>::second)
\
; \
class_<std::map<KEY_TYPE, VALUE_TYPE> >(PYTHON_TYPE_NAME) \
.def("__len__" , &std::map<KEY_TYPE, VALUE_TYPE>::size) \
.def("__iter__" , boost::python::iterator<std::map<KEY_TYPE,
VALUE_TYPE>, return_internal_reference<> >()) \
.def("__getitem__" , &map_item<KEY_TYPE, VALUE_TYPE>().get,
return_internal_reference<>()) \
.def("__setitem__" , &map_item<KEY_TYPE, VALUE_TYPE>().set ) \
.def("__delitem__" , &map_item<KEY_TYPE, VALUE_TYPE>().del ) \
.def("__contains__", &map_item<KEY_TYPE, VALUE_TYPE>().in ) \
.def("clear" , &std::map<KEY_TYPE, VALUE_TYPE>::clear ) \
.def("has_key" , &map_item<KEY_TYPE, VALUE_TYPE>().in ) \
.def("keys" , &map_item<KEY_TYPE, VALUE_TYPE>().keys ) \
.def("values" , &map_item<KEY_TYPE, VALUE_TYPE>().values) \
.def("items" , &map_item<KEY_TYPE, VALUE_TYPE>().items ) \
;
#define STL_MAP_WRAPPING(KEY_TYPE, VALUE_TYPE, PYTHON_TYPE_NAME) \
class_<std::pair<const KEY_TYPE, VALUE_TYPE>
>((std::string(PYTHON_TYPE_NAME)+std::string("DATA")).c_str()) \
.def_readonly ("key" , &std::pair<const KEY_TYPE, VALUE_TYPE>::first )
\
.def_readwrite("value", &std::pair<const KEY_TYPE, VALUE_TYPE>::second)
\
; \
class_<std::map<KEY_TYPE, VALUE_TYPE> >(PYTHON_TYPE_NAME) \
.def("__len__" , &std::map<KEY_TYPE, VALUE_TYPE>::size) \
.def("__iter__" , boost::python::iterator<std::map<KEY_TYPE,
VALUE_TYPE>, return_internal_reference<> >()) \
.def("__getitem__" , &map_item<KEY_TYPE, VALUE_TYPE>().get ) \
.def("__setitem__" , &map_item<KEY_TYPE, VALUE_TYPE>().set ) \
.def("__delitem__" , &map_item<KEY_TYPE, VALUE_TYPE>().del ) \
.def("__contains__", &map_item<KEY_TYPE, VALUE_TYPE>().in ) \
.def("clear" , &std::map<KEY_TYPE, VALUE_TYPE>::clear ) \
.def("has_key" , &map_item<KEY_TYPE, VALUE_TYPE>().in ) \
.def("keys" , &map_item<KEY_TYPE, VALUE_TYPE>().keys ) \
.def("values" , &map_item<KEY_TYPE, VALUE_TYPE>().values) \
.def("items" , &map_item<KEY_TYPE, VALUE_TYPE>().items ) \
;
} // namespace
=================
Simply use STL_MAP_WRAPPING_PTR(KeyClass, ClassA*, "ClassAMap") to bind a
map<KeyClass, ClassA*>
or STL_MAP_WRAPPING(KeyClass, ClassB, "ClassBMap") to bind a map<KeyClass,
ClassB>
This code works in my case, fell free to correct or complete any error /
missing.
-------------------------------
Damien Dupuis
Le 12 juil. 2010 à 09:13, Pentix a écrit :
>
> Hi, Damien!
>
> I've got exactly the same problem... Have you got any achievements?
>
>
>
> Damien Dupuis wrote:
>>
>> error: no match for call to ‘(const
>> boost::python::detail::specify_a_return_value_policy_to_wrap_functions_returning<X*>)
>> (X*)‘
>>
>
> --
> View this message in context:
> http://old.nabble.com/Problem-with-map_indexing_suite-tp28925347p29135982.html
> Sent from the Python - c++-sig mailing list archive at Nabble.com.
>
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> Cplusplus-sig mailing list
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