lsst.sphgeom  16.0-2-g8827b2c
utils.h
1 /*
2  * LSST Data Management System
3  * See COPYRIGHT file at the top of the source tree.
4  *
5  * This product includes software developed by the
6  * LSST Project (http://www.lsst.org/).
7  *
8  * This program is free software: you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation, either version 3 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the LSST License Statement and
19  * the GNU General Public License along with this program. If not,
20  * see <https://www.lsstcorp.org/LegalNotices/>.
21  */
22 
23 #ifndef LSST_SPHGEOM_PYTHON_UTILS_H_
24 #define LSST_SPHGEOM_PYTHON_UTILS_H_
25 
26 #include "pybind11/pybind11.h"
27 
28 #include <limits>
29 #include <sstream>
30 #include <stdexcept>
31 
32 namespace lsst {
33 namespace sphgeom {
34 namespace python {
35 namespace {
36 
39 ptrdiff_t convertIndex(ptrdiff_t len, pybind11::int_ i) {
40  auto j = static_cast<ptrdiff_t>(i);
41  if ((j == -1 && PyErr_Occurred()) || j < -len || j >= len) {
42  PyErr_Clear();
43  throw pybind11::index_error(
44  pybind11::str("Index {} not in range({}, {})")
45  .format(i, -len, len));
46  }
47  return (j < 0) ? j + len : j;
48 }
49 
50 } // <anonymous>
51 } // python
52 } // sphgeom
53 } // lsst
54 
55 #endif // LSST_SPHGEOM_PYTHON_UTILS_H_