blender-archive/source/blender/python/generic/python_utildefines.h

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

/** \file
 * \ingroup pygen
 * \brief header-only utilities
 * \note light addition to Python.h, use py_capi_utils.h for larger features.
 */

#pragma once

#ifdef __cplusplus
extern "C" {
#endif

#define PyTuple_SET_ITEMS(op_arg, ...) \
  { \
    PyTupleObject *op = (PyTupleObject *)op_arg; \
    PyObject **ob_items = op->ob_item; \
    CHECK_TYPE_ANY(op_arg, PyObject *, PyTupleObject *); \
    BLI_assert(VA_NARGS_COUNT(__VA_ARGS__) == PyTuple_GET_SIZE(op)); \
    ARRAY_SET_ITEMS(ob_items, __VA_ARGS__); \
  } \
  (void)0

/* wrap Py_INCREF & return the result,
 * use sparingly to avoid comma operator or temp var assignment */
Py_LOCAL_INLINE(PyObject *) Py_INCREF_RET(PyObject *op)
{
  Py_INCREF(op);
  return op;
}

/* Append & transfer ownership to the list,
 * avoids inline Py_DECREF all over (which is quite a large macro). */
Py_LOCAL_INLINE(int) PyList_APPEND(PyObject *op, PyObject *v)
{
  int ret = PyList_Append(op, v);
  Py_DecRef(v);
  return ret;
}

#ifdef __cplusplus
}
#endif