// This is the SIP interface definition for the QStringList mapped type.
//
// Copyright (c) 2022 Riverbank Computing Limited <info@riverbankcomputing.com>
// 
// This file is part of PyQt5.
// 
// This file may be used under the terms of the GNU General Public License
// version 3.0 as published by the Free Software Foundation and appearing in
// the file LICENSE included in the packaging of this file.  Please review the
// following information to ensure the GNU General Public License version 3.0
// requirements will be met: http://www.gnu.org/copyleft/gpl.html.
// 
// If you do not wish to use this file under the terms of the GPL version 3.0
// then you may purchase a commercial license.  For more information contact
// info@riverbankcomputing.com.
// 
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.


// Note that when we test the type of an object to see if it can be converted
// to a collection we only check if it is iterable.  We do not check the
// types of the contents - we assume we will be able to convert them when
// requested.  This allows us to raise exceptions specific to an individual
// object.  This approach doesn't work if there are overloads that can only be
// distinguished by the types of the template arguments.  Currently there are
// no such cases in PyQt5.  Note also that we don't consider strings to be
// iterables.


%MappedType QStringList
        /TypeHintIn="Iterable[QString]", TypeHintOut="List[QString]",
        TypeHintValue="[]"/
{
%TypeHeaderCode
#include <qstringlist.h>
%End

%ConvertFromTypeCode
    PyObject *l = PyList_New(sipCpp->size());

    if (!l)
        return 0;

    for (int i = 0; i < sipCpp->size(); ++i)
    {
        QString *t = new QString(sipCpp->at(i));
        PyObject *tobj = sipConvertFromNewType(t, sipType_QString,
                sipTransferObj);

        if (!tobj)
        {
            delete t;
            Py_DECREF(l);

            return 0;
        }

        PyList_SetItem(l, i, tobj);
    }

    return l;
%End

%ConvertToTypeCode
    PyObject *iter = PyObject_GetIter(sipPy);

    if (!sipIsErr)
    {
        PyErr_Clear();
        Py_XDECREF(iter);

        return (iter
#if PY_MAJOR_VERSION < 3
                && !PyString_Check(sipPy)
#endif
                && !PyUnicode_Check(sipPy));
    }

    if (!iter)
    {
        *sipIsErr = 1;

        return 0;
    }

    QStringList *ql = new QStringList;
 
    for (Py_ssize_t i = 0; ; ++i)
    {
        PyErr_Clear();
        PyObject *itm = PyIter_Next(iter);

        if (!itm)
        {
            if (PyErr_Occurred())
            {
                delete ql;
                Py_DECREF(iter);
                *sipIsErr = 1;

                return 0;
            }

            break;
        }

        int state;
        QString *t = reinterpret_cast<QString *>(
                sipForceConvertToType(itm, sipType_QString, sipTransferObj,
                        SIP_NOT_NONE, &state, sipIsErr));

        if (*sipIsErr)
        {
            PyErr_Format(PyExc_TypeError,
                    "index %zd has type '%s' but 'str' is expected", i,
                    sipPyTypeName(Py_TYPE(itm)));

            Py_DECREF(itm);
            delete ql;
            Py_DECREF(iter);

            return 0;
        }

        ql->append(*t);

        sipReleaseType(t, sipType_QString, state);
        Py_DECREF(itm);
    }
 
    Py_DECREF(iter);

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