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swig/Lib/python/std_map.i

+/*
+  Maps
+*/
+
+%fragment("StdMapTraits","header",fragment="StdSequenceTraits")
+{
+  namespace swig {
+    template <class SwigPySeq, class K, class T >
+    inline void
+    assign(const SwigPySeq& swigpyseq, std::map<K,T > *map) {
+      typedef typename std::map<K,T>::value_type value_type;
+      typename SwigPySeq::const_iterator it = swigpyseq.begin();
+      for (;it != swigpyseq.end(); ++it) {
+        map->insert(value_type(it->first, it->second));
+      }
+    }
+
+    template <class K, class T>
+    struct traits_asptr<std::map<K,T> >  {
+      typedef std::map<K,T> map_type;
+      static int asptr(PyObject *obj, map_type **val) {
+        int res = SWIG_ERROR;
+        SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+        if (PyDict_Check(obj)) {
+          SwigVar_PyObject items = PyObject_CallMethod(obj,(char *)"items",NULL);
+%#if PY_VERSION_HEX >= 0x03000000
+          /* In Python 3.x the ".items()" method returns a dict_items object */
+          items = PySequence_Fast(items, ".items() didn't return a sequence!");
+%#endif
+          res = traits_asptr_stdseq<std::map<K,T>, std::pair<K, T> >::asptr(items, val);
+        } else {
+          map_type *p;
+          res = SWIG_ConvertPtr(obj,(void**)&p,swig::type_info<map_type>(),0);
+          if (SWIG_IsOK(res) && val)  *val = p;
+        }
+        SWIG_PYTHON_THREAD_END_BLOCK;
+        return res;
+      }      
+    };
+      
+    template <class K, class T >
+    struct traits_from<std::map<K,T> >  {
+      typedef std::map<K,T> map_type;
+      typedef typename map_type::const_iterator const_iterator;
+      typedef typename map_type::size_type size_type;
+            
+      static PyObject *from(const map_type& map) {
+        swig_type_info *desc = swig::type_info<map_type>();
+        if (desc && desc->clientdata) {
+          return SWIG_NewPointerObj(new map_type(map), desc, SWIG_POINTER_OWN);
+        } else {
+          SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+          size_type size = map.size();
+          int pysize = (size <= (size_type) INT_MAX) ? (int) size : -1;
+          if (pysize < 0) {
+            PyErr_SetString(PyExc_OverflowError,
+                            "map size not valid in python");
+            SWIG_PYTHON_THREAD_END_BLOCK;
+            return NULL;
+          }
+          PyObject *obj = PyDict_New();
+          for (const_iterator i= map.begin(); i!= map.end(); ++i) {
+            swig::SwigVar_PyObject key = swig::from(i->first);
+            swig::SwigVar_PyObject val = swig::from(i->second);
+            PyDict_SetItem(obj, key, val);
+          }
+          SWIG_PYTHON_THREAD_END_BLOCK;
+          return obj;
+        }
+      }
+    };
+
+    template <class ValueType>
+    struct from_key_oper 
+    {
+      typedef const ValueType& argument_type;
+      typedef  PyObject *result_type;
+      result_type operator()(argument_type v) const
+      {
+        return swig::from(v.first);
+      }
+    };
+
+    template <class ValueType>
+    struct from_value_oper 
+    {
+      typedef const ValueType& argument_type;
+      typedef  PyObject *result_type;
+      result_type operator()(argument_type v) const
+      {
+        return swig::from(v.second);
+      }
+    };
+
+    template<class OutIterator, class FromOper, class ValueType = typename OutIterator::value_type>
+    struct SwigPyMapIterator_T : SwigPyIteratorClosed_T<OutIterator, ValueType, FromOper>
+    {
+      SwigPyMapIterator_T(OutIterator curr, OutIterator first, OutIterator last, PyObject *seq)
+        : SwigPyIteratorClosed_T<OutIterator,ValueType,FromOper>(curr, first, last, seq)
+      {
+      }
+    };
+
+
+    template<class OutIterator,
+             class FromOper = from_key_oper<typename OutIterator::value_type> >
+    struct SwigPyMapKeyIterator_T : SwigPyMapIterator_T<OutIterator, FromOper>
+    {
+      SwigPyMapKeyIterator_T(OutIterator curr, OutIterator first, OutIterator last, PyObject *seq)
+        : SwigPyMapIterator_T<OutIterator, FromOper>(curr, first, last, seq)
+      {
+      }
+    };
+
+    template<typename OutIter>
+    inline SwigPyIterator*
+    make_output_key_iterator(const OutIter& current, const OutIter& begin, const OutIter& end, PyObject *seq = 0)
+    {
+      return new SwigPyMapKeyIterator_T<OutIter>(current, begin, end, seq);
+    }
+
+    template<class OutIterator,
+             class FromOper = from_value_oper<typename OutIterator::value_type> >
+    struct SwigPyMapValueITerator_T : SwigPyMapIterator_T<OutIterator, FromOper>
+    {
+      SwigPyMapValueITerator_T(OutIterator curr, OutIterator first, OutIterator last, PyObject *seq)
+        : SwigPyMapIterator_T<OutIterator, FromOper>(curr, first, last, seq)
+      {
+      }
+    };
+    
+
+    template<typename OutIter>
+    inline SwigPyIterator*
+    make_output_value_iterator(const OutIter& current, const OutIter& begin, const OutIter& end, PyObject *seq = 0)
+    {
+      return new SwigPyMapValueITerator_T<OutIter>(current, begin, end, seq);
+    }
+  }
+}
+
+%define %swig_map_common(Map...)
+  %swig_sequence_iterator(Map);
+  %swig_container_methods(Map)
+
+  %extend {
+    mapped_type __getitem__(const key_type& key) const throw (std::out_of_range) {
+      Map::const_iterator i = self->find(key);
+      if (i != self->end())
+        return i->second;
+      else
+        throw std::out_of_range("key not found");
+    }
+    
+    void __delitem__(const key_type& key) throw (std::out_of_range) {
+      Map::iterator i = self->find(key);
+      if (i != self->end())
+        self->erase(i);
+      else
+        throw std::out_of_range("key not found");
+    }
+    
+    bool has_key(const key_type& key) const {
+      Map::const_iterator i = self->find(key);
+      return i != self->end();
+    }
+    
+    PyObject* keys() {
+      Map::size_type size = self->size();
+      int pysize = (size <= (Map::size_type) INT_MAX) ? (int) size : -1;
+      SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+      if (pysize < 0) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "map size not valid in python");
+        SWIG_PYTHON_THREAD_END_BLOCK;
+        return NULL;
+      }
+      PyObject* keyList = PyList_New(pysize);
+      Map::const_iterator i = self->begin();
+      for (int j = 0; j < pysize; ++i, ++j) {
+        PyList_SET_ITEM(keyList, j, swig::from(i->first));
+      }
+      SWIG_PYTHON_THREAD_END_BLOCK;
+      return keyList;
+    }
+    
+    PyObject* values() {
+      Map::size_type size = self->size();
+      int pysize = (size <= (Map::size_type) INT_MAX) ? (int) size : -1;
+      SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+      if (pysize < 0) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "map size not valid in python");
+        SWIG_PYTHON_THREAD_END_BLOCK;
+        return NULL;
+      }
+      PyObject* valList = PyList_New(pysize);
+      Map::const_iterator i = self->begin();
+      for (int j = 0; j < pysize; ++i, ++j) {
+        PyList_SET_ITEM(valList, j, swig::from(i->second));
+      }
+      SWIG_PYTHON_THREAD_END_BLOCK;
+      return valList;
+    }
+    
+    PyObject* items() {
+      Map::size_type size = self->size();
+      int pysize = (size <= (Map::size_type) INT_MAX) ? (int) size : -1;
+      SWIG_PYTHON_THREAD_BEGIN_BLOCK;
+      if (pysize < 0) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "map size not valid in python");
+        SWIG_PYTHON_THREAD_END_BLOCK;
+        return NULL;
+      }    
+      PyObject* itemList = PyList_New(pysize);
+      Map::const_iterator i = self->begin();
+      for (int j = 0; j < pysize; ++i, ++j) {
+        PyList_SET_ITEM(itemList, j, swig::from(*i));
+      }
+      SWIG_PYTHON_THREAD_END_BLOCK;
+      return itemList;
+    }
+    
+    // Python 2.2 methods
+    bool __contains__(const key_type& key) {
+      return self->find(key) != self->end();
+    }
+
+    %newobject key_iterator(PyObject **PYTHON_SELF);
+    swig::SwigPyIterator* key_iterator(PyObject **PYTHON_SELF) {
+      return swig::make_output_key_iterator(self->begin(), self->begin(), self->end(), *PYTHON_SELF);
+    }
+
+    %newobject value_iterator(PyObject **PYTHON_SELF);
+    swig::SwigPyIterator* value_iterator(PyObject **PYTHON_SELF) {
+      return swig::make_output_value_iterator(self->begin(), self->begin(), self->end(), *PYTHON_SELF);
+    }
+
+    %pythoncode {def __iter__(self): return self.key_iterator()}    
+    %pythoncode {def iterkeys(self): return self.key_iterator()}
+    %pythoncode {def itervalues(self): return self.value_iterator()}
+    %pythoncode {def iteritems(self): return self.iterator()}
+  }
+%enddef
+
+%define %swig_map_methods(Map...)
+  %swig_map_common(Map)
+  %extend {
+    void __setitem__(const key_type& key, const mapped_type& x) throw (std::out_of_range) {
+      (*self)[key] = x;
+    }
+  }
+%enddef
+
+
+%include <std/std_map.i>