conversions.sip

/*
This file contains code for conversion between various (often nested) mapped types
which are not wrapped by PyQt:
- QVector< QVector<TYPE> >
- QVector< QVector< QVector<TYPE> > >
- QSet<int>
- QSet<TYPE>
- QMap<int, QMap<int, TYPE> >
- QMap<QString, QVariant::Type>
- QMap<TYPE1, TYPE2*>
- QMultiMap<double, TYPE2>
*/

%ModuleHeaderCode
// From Python 2.5, some functions use Py_ssize_t instead of int
// thus this typedef is for maintaining backward compatibility
// for older versions of Python
#if (PY_VERSION_HEX < 0x02050000)
typedef int Py_ssize_t;
#endif
%End


template <TYPE>
%MappedType QVector< QVector<TYPE> >
{
%TypeHeaderCode
#include <QVector>
%End

%ConvertFromTypeCode
  // Create the list.
  PyObject *l;

  if ((l = PyList_New(sipCpp->size())) == NULL)
    return NULL;
      
  const sipMappedType* qvector_qgspoint = sipFindMappedType("QVector<QgsPoint>");
      
  // Set the list elements.
  for (int i = 0; i < sipCpp->size(); ++i)
  {
    QVector<TYPE>* t = new QVector<TYPE>(sipCpp->at(i));
    PyObject *tobj;

    if ((tobj = sipConvertFromMappedType(t, qvector_qgspoint, sipTransferObj)) == NULL)
    {
      Py_DECREF(l);
      delete t;
      return NULL;
    }
    PyList_SET_ITEM(l, i, tobj);
  }
 
  return l;
%End

%ConvertToTypeCode
  const sipMappedType* qvector_qgspoint = sipFindMappedType("QVector<QgsPoint>");
  
  // Check the type if that is all that is required.
  if (sipIsErr == NULL)
  {
    if (!PyList_Check(sipPy))
      return 0;

    for (int i = 0; i < PyList_GET_SIZE(sipPy); ++i)
      if (!sipCanConvertToMappedType(PyList_GET_ITEM(sipPy, i), qvector_qgspoint, SIP_NOT_NONE))
        return 0;

    return 1;
  }

  
  QVector< QVector<TYPE> > *ql = new QVector< QVector<TYPE> >;

  for (int i = 0; i < PyList_GET_SIZE(sipPy); ++i)
  {
    int state;
    //TYPE *t = reinterpret_cast<TYPE *>(sipConvertToInstance(PyList_GET_ITEM(sipPy, i), sipClass_TYPE, sipTransferObj, SIP_NOT_NONE, &state, sipIsErr));
    QVector<TYPE> * t = reinterpret_cast< QVector<TYPE> * >(sipConvertToMappedType(PyList_GET_ITEM(sipPy, i), qvector_qgspoint, sipTransferObj, SIP_NOT_NONE, &state, sipIsErr));

    if (*sipIsErr)
    {
      sipReleaseInstance(t, sipClass_TYPE, state);
      delete ql;
      return 0;
    }
    ql->append(*t);
    sipReleaseInstance(t, sipClass_TYPE, state);
  }

  *sipCppPtr = ql;
  return sipGetState(sipTransferObj);
%End

};


template <TYPE>
%MappedType QVector< QVector< QVector<TYPE> > >
{
%TypeHeaderCode
#include <QVector>
%End

%ConvertFromTypeCode
  // Create the list.
  PyObject *l;

  if ((l = PyList_New(sipCpp->size())) == NULL)
    return NULL;
      
  const sipMappedType* qvector_qgspoint = sipFindMappedType("QVector<QVector<QgsPoint> >");
      
  // Set the list elements.
  for (int i = 0; i < sipCpp->size(); ++i)
  {
    QVector<QVector<TYPE> >* t = new QVector<QVector<TYPE> >(sipCpp->at(i));
    PyObject *tobj;

    if ((tobj = sipConvertFromMappedType(t, qvector_qgspoint, sipTransferObj)) == NULL)
    {
      Py_DECREF(l);
      delete t;
      return NULL;
    }
    PyList_SET_ITEM(l, i, tobj);
  }
  return l;
%End

%ConvertToTypeCode
  
  const sipMappedType* qvector_qgspoint = sipFindMappedType("QVector<QVector<QgsPoint> >");
  
  // Check the type if that is all that is required.
  if (sipIsErr == NULL)
  {
    if (!PyList_Check(sipPy))
      return 0;

    for (int i = 0; i < PyList_GET_SIZE(sipPy); ++i)
      if (!sipCanConvertToMappedType(PyList_GET_ITEM(sipPy, i), qvector_qgspoint, SIP_NOT_NONE))
        return 0;

    return 1;
  }

  
  QVector< QVector< QVector<TYPE> > > *ql = new QVector< QVector< QVector<TYPE> > >;

  for (int i = 0; i < PyList_GET_SIZE(sipPy); ++i)
  {
    int state;
    //TYPE *t = reinterpret_cast<TYPE *>(sipConvertToInstance(PyList_GET_ITEM(sipPy, i), sipClass_TYPE, sipTransferObj, SIP_NOT_NONE, &state, sipIsErr));
    QVector<QVector<TYPE> > * t = reinterpret_cast< QVector< QVector<TYPE> > * >(sipConvertToMappedType(PyList_GET_ITEM(sipPy, i), qvector_qgspoint, sipTransferObj, SIP_NOT_NONE, &state, sipIsErr));

    if (*sipIsErr)
    {
      sipReleaseInstance(t, sipClass_TYPE, state);
      delete ql;
      return 0;
    }
    ql->append(*t);
    sipReleaseInstance(t, sipClass_TYPE, state);
  }

  *sipCppPtr = ql;
  return sipGetState(sipTransferObj);
%End

};


%MappedType QSet<int>
{
%TypeHeaderCode
#include <QSet>
%End

%ConvertFromTypeCode
  // Create the list.
  PyObject *l;

  if ((l = PyList_New(sipCpp->size())) == NULL)
    return NULL;
      
  // Set the list elements.
  QSet<int>::iterator it = sipCpp->begin();
  for (int i = 0; it != sipCpp->end(); ++it, ++i)
  {
    PyObject *tobj;

    if ((tobj = PyInt_FromLong(*it)) == NULL)
    {
      Py_DECREF(l);
      return NULL;
    }
    PyList_SET_ITEM(l, i, tobj);
  }

  return l;
%End

%ConvertToTypeCode
  // Check the type if that is all that is required.
  if (sipIsErr == NULL)
    return PyList_Check(sipPy);

  QSet<int> *qset = new QSet<int>;

  for (int i = 0; i < PyList_GET_SIZE(sipPy); ++i)
  {
    qset->insert(PyInt_AsLong(PyList_GET_ITEM(sipPy, i)));
  }

  *sipCppPtr = qset;
  return sipGetState(sipTransferObj);
%End

};


template <TYPE>
%MappedType QSet<TYPE>
{
%TypeHeaderCode
#include <QSet>
%End

%ConvertFromTypeCode
  // Create the list.
  PyObject *l;

  if ((l = PyList_New(sipCpp->size())) == NULL)
    return NULL;
      
  // Set the list elements.
  int i=0;
  for (QSet<TYPE>::iterator it = sipCpp->begin(); it != sipCpp->end(); ++it, ++i)
  {
    TYPE *t = new TYPE(*it);
    PyObject *tobj;

    if ((tobj = sipConvertFromNewInstance(t, sipClass_TYPE, sipTransferObj)) == NULL)
    {
      Py_DECREF(l);
      delete t;
      return NULL;
    }
    PyList_SET_ITEM(l, i, tobj);
  }
 
  return l;
%End

%ConvertToTypeCode
  // Check the type if that is all that is required.
  if (sipIsErr == NULL)
  {
    if (!PyList_Check(sipPy))
      return 0;

    for (int i = 0; i < PyList_GET_SIZE(sipPy); ++i)
      if (!sipCanConvertToInstance(PyList_GET_ITEM(sipPy, i), sipClass_TYPE, SIP_NOT_NONE))
        return 0;

    return 1;
  }

  QSet<TYPE> *qset = new QSet<TYPE>;

  for (int i = 0; i < PyList_GET_SIZE(sipPy); ++i)
  {
    int state;
    TYPE* t = reinterpret_cast<TYPE *>(sipConvertToInstance(PyList_GET_ITEM(sipPy, i), sipClass_TYPE, sipTransferObj, SIP_NOT_NONE, &state, sipIsErr));

    if (*sipIsErr)
    {
      sipReleaseInstance(t, sipClass_TYPE, state);
      delete qset;
      return 0;
    }
    qset->insert(*t);
    sipReleaseInstance(t, sipClass_TYPE, state);
  }

  *sipCppPtr = qset;
  return sipGetState(sipTransferObj);
%End

};



template<TYPE>
%MappedType QMap<int, QMap<int, TYPE> >
{
%TypeHeaderCode
#include <QMap>
%End

%ConvertFromTypeCode
  // Create the list.
  PyObject *d;

  if ((d = PyDict_New()) == NULL)
    return NULL;
      
  const sipMappedType* qmap2 = sipFindMappedType("QMap<int, TYPE>");
      
  // Set the list elements.
  for (QMap<int, QMap<int, TYPE> >::iterator it = sipCpp->begin(); it != sipCpp->end(); ++it)
  {
    QMap<int, TYPE>* t = new QMap<int, TYPE>(*it);
    
    PyObject *kobj = PyInt_FromLong(it.key());
    PyObject *tobj = sipConvertFromMappedType(t, qmap2, sipTransferObj);

    if (kobj == NULL || tobj == NULL || PyDict_SetItem(d, kobj, tobj) < 0)
    {
      Py_DECREF(d);
      
      if (kobj)
      {
        Py_DECREF(kobj);
      }

      if (tobj)
      {
        Py_DECREF(tobj);
      }
      else
      {
        delete t;
      }

      return NULL;
    }
  
    Py_DECREF(kobj);
    Py_DECREF(tobj);
  }
 
  return d;
%End

%ConvertToTypeCode
  PyObject *kobj, *tobj, *kobj2, *tobj2;

  // Check the type if that is all that is required.
  if (sipIsErr == NULL)
  {
    if (!PyDict_Check(sipPy))
      return 0;

    Py_ssize_t i = 0;
    while (PyDict_Next(sipPy, &i, &kobj, &tobj))
    {
      if (!PyDict_Check(tobj))
        return 0;
        
      Py_ssize_t j = 0;
      while (PyDict_Next(tobj, &j, &kobj2, &tobj2))
      {
        if (!sipCanConvertToInstance(tobj2, sipClass_TYPE, SIP_NOT_NONE))
          return 0;
      }
      
    }
    return 1;
  }
  
  QMap<int, QMap<int, TYPE> > *qm = new QMap<int, QMap<int, TYPE> >;
  

  Py_ssize_t i = 0;
  while (PyDict_Next(sipPy, &i, &kobj, &tobj))
  {
    int k = PyInt_AsLong(kobj);
    
    // using sipConvertToMappedType to convert directly to QMap<int, TYPE> doesn't work
    // and ends with a segfault
    
    QMap<int, TYPE> qm2;
    
    Py_ssize_t j = 0;
    while (PyDict_Next(tobj, &j, &kobj2, &tobj2))
    {
      int k2 = PyInt_AsLong(kobj2);
      int state;
      
      TYPE* fa = reinterpret_cast<TYPE*>(sipConvertToInstance(tobj2, sipClass_TYPE, sipTransferObj,SIP_NOT_NONE,&state,sipIsErr));
      
      if (*sipIsErr)
      {
        sipReleaseInstance(tobj2, sipClass_TYPE, state);
        delete qm;
        return 0;
      }
      
      qm2.insert(k2, *fa);
      sipReleaseInstance(tobj2, sipClass_TYPE, state);
    }
    qm->insert(k, qm2);
  }

  *sipCppPtr = qm;
  return sipGetState(sipTransferObj);
%End

};

%MappedType QMap<QString, QVariant::Type>
{
%TypeHeaderCode
#include <QMap>
%End

%ConvertFromTypeCode
    // Create the dictionary.
    PyObject *d = PyDict_New();

    if (!d)
        return NULL;

    // Set the dictionary elements.
    QMap<QString, QVariant::Type>::const_iterator i = sipCpp->constBegin();

    while (i != sipCpp->constEnd())
    {
        QString *t1 = new QString(i.key());

        PyObject *t1obj = sipConvertFromNewInstance(t1, sipClass_QString, sipTransferObj);
        PyObject *t2obj = PyInt_FromLong( (long) i.value() );

        if (t1obj == NULL || t2obj == NULL || PyDict_SetItem(d, t1obj, t2obj) < 0)
        {
            Py_DECREF(d);

	    if (t1obj) {
	      Py_DECREF(t1obj);
	    } else {
	      delete t1;
	    }

	    if (t2obj) {
	      Py_DECREF(t2obj);
	    }

            return NULL;
        }

        Py_DECREF(t1obj);
        Py_DECREF(t2obj);

        ++i;
    }

    return d;
%End

%ConvertToTypeCode
    PyObject *t1obj, *t2obj;
#if PY_VERSION_HEX >= 0x02050000
    Py_ssize_t i = 0;
#else
    int i = 0;
#endif


    // Check the type if that is all that is required.
    if (sipIsErr == NULL)
    {
        if (!PyDict_Check(sipPy))
            return 0;

        while (PyDict_Next(sipPy, &i, &t1obj, &t2obj))
        {
            if (!sipCanConvertToInstance(t1obj, sipClass_QString, SIP_NOT_NONE))
                return 0;
        } 

        return 1;
    }

    QMap<QString, QVariant::Type> *qm = new QMap<QString, QVariant::Type>;
 
    while (PyDict_Next(sipPy, &i, &t1obj, &t2obj))
    {
        int state;

        QString *t1 = reinterpret_cast<QString *>(sipConvertToInstance(t1obj, sipClass_QString, sipTransferObj, SIP_NOT_NONE, &state, sipIsErr));
        QVariant::Type t2 = (QVariant::Type) PyInt_AsLong(t1obj);

        if (*sipIsErr)
        {
            sipReleaseInstance(t1, sipClass_QString, state);
            delete qm;
            return 0;
        }

        qm->insert(*t1, t2);

        sipReleaseInstance(t1, sipClass_QString, state);
    }
 
    *sipCppPtr = qm;
 
    return sipGetState(sipTransferObj);
%End
};

template<TYPE1, TYPE2>
%MappedType QMap<TYPE1, TYPE2*>
{
%TypeHeaderCode
#include <qmap.h>
%End

%ConvertFromTypeCode
    // Create the dictionary.
    PyObject *d = PyDict_New();

    if (!d)
        return NULL;

    // Set the dictionary elements.
    QMap<TYPE1, TYPE2*>::const_iterator i = sipCpp->constBegin();

    while (i != sipCpp->constEnd())
    {
        TYPE1 *t1 = new TYPE1(i.key());
        TYPE2 *t2 = i.value();

        PyObject *t1obj = sipConvertFromNewInstance(t1, sipClass_TYPE1, sipTransferObj);
        PyObject *t2obj = sipConvertFromInstance(t2, sipClass_TYPE2, sipTransferObj);

        if (t1obj == NULL || t2obj == NULL || PyDict_SetItem(d, t1obj, t2obj) < 0)
        {
            Py_DECREF(d);

            if (t1obj)
                Py_DECREF(t1obj);
            else
                delete t1;

            if (t2obj)
                Py_DECREF(t2obj);
            else
                delete t2;

            return NULL;
        }

        Py_DECREF(t1obj);
        Py_DECREF(t2obj);

        ++i;
    }

    return d;
%End

%ConvertToTypeCode
    PyObject *t1obj, *t2obj;
#if PY_VERSION_HEX >= 0x02050000
    Py_ssize_t i = 0;
#else
    int i = 0;
#endif

    // Check the type if that is all that is required.
    if (sipIsErr == NULL)
    {
        if (!PyDict_Check(sipPy))
            return 0;

        while (PyDict_Next(sipPy, &i, &t1obj, &t2obj))
        {
            if (!sipCanConvertToInstance(t1obj, sipClass_TYPE1, SIP_NOT_NONE))
                return 0;

            if (!sipCanConvertToInstance(t2obj, sipClass_TYPE2, SIP_NOT_NONE))
                return 0;
        } 

        return 1;
    }

    QMap<TYPE1, TYPE2*> *qm = new QMap<TYPE1, TYPE2*>;
 
    while (PyDict_Next(sipPy, &i, &t1obj, &t2obj))
    {
        int state1, state2;

        TYPE1 *t1 = reinterpret_cast<TYPE1 *>(sipConvertToInstance(t1obj, sipClass_TYPE1, sipTransferObj, SIP_NOT_NONE, &state1, sipIsErr));
        TYPE2 *t2 = reinterpret_cast<TYPE2 *>(sipConvertToInstance(t2obj, sipClass_TYPE2, sipTransferObj, SIP_NOT_NONE, &state2, sipIsErr));
 
        if (*sipIsErr)
        {
            sipReleaseInstance(t1, sipClass_TYPE1, state1);
            sipReleaseInstance(t2, sipClass_TYPE2, state2);

            delete qm;
            return 0;
        }

        qm->insert(*t1, t2);

        sipReleaseInstance(t1, sipClass_TYPE1, state1);
        sipReleaseInstance(t2, sipClass_TYPE2, state2);
    }
 
    *sipCppPtr = qm;
 
    return sipGetState(sipTransferObj);
%End
};

template<double, TYPE2>
%MappedType QMultiMap<double, TYPE2>
{
%TypeHeaderCode
#include <QMultiMap>
%End

%ConvertFromTypeCode
    // Create the dictionary.
    PyObject *d = PyDict_New();

    if (!d)
        return NULL;

    // Set the dictionary elements.
    QMultiMap<double, TYPE2>::iterator i = sipCpp->begin();

    while (i != sipCpp->end())
    {

      const double t1 = i.key();
      TYPE2 * t2 = &i.value();
      PyObject *t1obj = PyFloat_FromDouble(t1);
      PyObject *t2obj = sipConvertFromInstance(t2, sipClass_TYPE2, sipTransferObj);
      if (PyDict_GetItem(d, t1obj) == NULL) {
       PyObject *lst = PyList_New(0);
       PyDict_SetItem(d, t1obj, lst);
       if (lst)
       {
         Py_DECREF(lst);
       }
      }

      if (t1obj == NULL || t2obj == NULL ||
         PyList_Append(PyDict_GetItem(d, t1obj), t2obj) < 0)
        {
         Py_DECREF(d);
         if (t1obj)
         {
           Py_DECREF(t1obj);
         }

         if (t2obj)
         {
           Py_DECREF(t2obj);
         }

         return NULL;
        }
        Py_DECREF(t1obj);
        Py_DECREF(t2obj);

        ++i;
    }

    return d;
%End

%ConvertToTypeCode
    PyObject *t1obj, *t2obj;
#if PY_VERSION_HEX >= 0x02050000
    Py_ssize_t i = 0;
#else
    int i = 0;
#endif

    // Check the type if that is all that is required.
    if (sipIsErr == NULL)
    {
        if (!PyDict_Check(sipPy))
            return 0;

        while (PyDict_Next(sipPy, &i, &t1obj, &t2obj))
        {
         for (int i = 0; i < PyList_GET_SIZE(t2obj); ++i) {
           if (!sipCanConvertToInstance(PyList_GET_ITEM(t2obj, i),
                                        sipClass_TYPE2, SIP_NOT_NONE))
             return 0;
         }
        }

        return 1;
    }

    QMultiMap<double, TYPE2> *qm = new QMultiMap<double, TYPE2>;
    while (PyDict_Next(sipPy, &i, &t1obj, &t2obj))
    {
        int state2;
       double k = PyFloat_AsDouble(t1obj);
       for (int i = 0; i < PyList_GET_SIZE(t2obj); ++i) {
         TYPE2 *t2 =
           reinterpret_cast<TYPE2 *>(sipConvertToInstance(PyList_GET_ITEM(t2obj,
                                                                          i),
                                                          sipClass_TYPE2,
                                                          sipTransferObj,
                                                          SIP_NOT_NONE,
                                                          &state2,
                                                          sipIsErr));

         if (*sipIsErr)
           {
             sipReleaseInstance(t2, sipClass_TYPE2, state2);

             delete qm;
             return 0;
           }

         qm->insert(k, *t2);

         sipReleaseInstance(t2, sipClass_TYPE2, state2);
       }
    }

    *sipCppPtr = qm;

    return sipGetState(sipTransferObj);
%End
   };