_lass_module.cpp

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/** @file
 *  @author Bram de Greve (bram@cocamware.com)
 *  @author Tom De Muer (tom@cocamware.com)
 *
 *  *** BEGIN LICENSE INFORMATION ***
 *
 *  The contents of this file are subject to the Common Public Attribution License
 *  Version 1.0 (the "License"); you may not use this file except in compliance with
 *  the License. You may obtain a copy of the License at
 *  http://lass.sourceforge.net/cpal-license. The License is based on the
 *  Mozilla Public License Version 1.1 but Sections 14 and 15 have been added to cover
 *  use of software over a computer network and provide for limited attribution for
 *  the Original Developer. In addition, Exhibit A has been modified to be consistent
 *  with Exhibit B.
 *
 *  Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
 *  WARRANTY OF ANY KIND, either express or implied. See the License for the specific
 *  language governing rights and limitations under the License.
 *
 *  The Original Code is LASS - Library of Assembled Shared Sources.
 *
 *  The Initial Developer of the Original Code is Bram de Greve and Tom De Muer.
 *  The Original Developer is the Initial Developer.
 *
 *  All portions of the code written by the Initial Developer are:
 *  Copyright (C) 2023-2025 the Initial Developer.
 *  All Rights Reserved.
 *
 *  Contributor(s):
 *
 *  Alternatively, the contents of this file may be used under the terms of the
 *  GNU General Public License Version 2 or later (the GPL), in which case the
 *  provisions of GPL are applicable instead of those above.  If you wish to allow use
 *  of your version of this file only under the terms of the GPL and not to allow
 *  others to use your version of this file under the CPAL, indicate your decision by
 *  deleting the provisions above and replace them with the notice and other
 *  provisions required by the GPL License. If you do not delete the provisions above,
 *  a recipient may use your version of this file under either the CPAL or the GPL.
 *
 *  *** END LICENSE INFORMATION ***
 */
 
#include "python_common.h"
#include "pyobject_plus.h"
#include "pymap.h"
#include "pysequence.h"
#include "pycallback.h"
#include "pyiteratorrange.h"
#include "export_traits_function.h"
#include "callback_python.h"
#include "pyobject_macros.h"
 
PY_DECLARE_MODULE_NAME( lassMod, "_lass")
PY_MODULE_CLASS( lassMod, lass::python::PyObjectPlus )
PY_MODULE_CLASS( lassMod, lass::python::impl::Map )
PY_MODULE_CLASS( lassMod, lass::python::impl::Sequence )
PY_MODULE_CLASS( lassMod, lass::python::MultiCallback )
PY_MODULE_CLASS( lassMod, lass::python::PyIteratorRange )
PY_MODULE_CLASS( lassMod, lass::python::impl::Function )
PY_MODULE_CLASS( lassMod, lass::python::impl::PyCallback )
 
namespace lass::python::impl
{
 
int initLassModule()
{
    if (lassMod.module())
    {
        return 0;
    }
    LockGIL LASS_UNUSED(lock);
    TPyObjPtr mod(lassMod.inject());
    if (!mod)
    {
        return -1;
    }
    PyObject* sysModules = PySys_GetObject("modules");
    if (!sysModules || PyDict_SetItemString(sysModules, "_lass", mod.get()) != 0)
    {
        return -1;
    }
 
    // register lass containers with abstract base classes
    // so that they will be recognized when using isinstance(x, collections.abc.Sequence)
    //
    // MultiCallback and PyIteratorRange are automatically recognized
    //
    TPyObjPtr abcMod(PyImport_ImportModule("collections.abc"));
    if (!abcMod)
    {
        return -1;
    }
 
    {
        TPyObjPtr astractType(PyObject_GetAttrString(abcMod.get(), "MutableSequence"));
        if (!astractType)
        {
            return -1;
        }
        PyTypeObject* lassType = lass::python::impl::Sequence::_lassPyClassDef.type();
        if (!lassType)
        {
            return -1;
        }
        TPyObjPtr r(PyObject_CallMethod(astractType.get(), "register", "O", lassType));
        if (!r)
        {
            return -1;
        }
    }
 
    {
        TPyObjPtr astractType(PyObject_GetAttrString(abcMod.get(), "MutableMapping"));
        if (!astractType)
        {
            return -1;
        }
        PyTypeObject* lassType = lass::python::impl::Map::_lassPyClassDef.type();
        if (!lassType)
        {
            return -1;
        }
        TPyObjPtr r(PyObject_CallMethod(astractType.get(), "register", "O", lassType));
        if (!r)
        {
            return -1;
        }
    }
 
    return 0;
}
 
}