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/**************************************************************************
* *
* Regina - A Normal Surface Theory Calculator *
* Python Interface *
* *
* Copyright (c) 1999-2025, Ben Burton *
* For further details contact Ben Burton (bab@debian.org). *
* *
* 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. *
* *
* As an exception, when this program is distributed through (i) the *
* App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or *
* (iii) Google Play by Google Inc., then that store may impose any *
* digital rights management, device limits and/or redistribution *
* restrictions that are required by its terms of service. *
* *
* 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, see <https://www.gnu.org/licenses/>. *
* *
**************************************************************************/
#include <pybind11/pybind11.h>
#include "maths/integer.h"
#include "utilities/tightencoding.h"
#include "../helpers/docstrings.h"
#include "../docstrings/utilities/tightencoding.h"
using pybind11::overload_cast;
// Docstrings that are generated once but need to be reused across many
// source files:
namespace regina::python::doc::common {
const char* TightEncodable_encoding = TightEncodable_::tightEncoding;
const char* TightEncodable_decoding = TightEncodable_::tightDecoding;
const char* TightEncodable_hash = TightEncodable_::hash;
}
void addTightEncoding(pybind11::module_& m) {
RDOC_SCOPE_BEGIN_MAIN
// We cannot use overload_cast here because there is a templated
// global tightEncoding() function.
m.def("tightEncoding", static_cast<std::string(&)(long)>(
regina::tightEncoding), rdoc::tightEncoding_2);
m.def("tightEncoding", static_cast<std::string(&)(long long)>(
regina::tightEncoding), rdoc::tightEncoding_3);
m.def("tightEncoding", static_cast<std::string(&)(bool)>(
regina::tightEncoding), rdoc::tightEncoding_7);
m.def("tightDecoding", [](const std::string& enc) {
// Try a native integer conversion first.
try {
return pybind11::cast(regina::tightDecoding<long>(enc));
} catch (const regina::InvalidArgument&) {
// It could have been out of range. Try arbitrary precision
// integers before aborting.
regina::Integer ans = regina::tightDecoding<regina::Integer>(enc);
// At this point we have a valid solution, so we should be
// able to convert to a Python long via strings without trouble.
return pybind11::reinterpret_steal<pybind11::object>(
PyLong_FromString(ans.stringValue().c_str(), nullptr, 10));
}
}, rdoc::tightDecoding);
RDOC_SCOPE_END
}
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