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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 <pybind11/stl.h>
#include "enumerate/treelp.h"
#include "triangulation/dim3.h"
#include "../helpers.h"
#include "../docstrings/enumerate/treelp.h"
using pybind11::overload_cast;
using regina::Integer;
using regina::LPData;
using regina::LPInitialTableaux;
using regina::LPMatrix;
using regina::LPSystem;
using regina::NormalEncoding;
using regina::Triangulation;
using regina::LPConstraintNone;
using regina::LPConstraintEulerPositive;
using regina::LPConstraintEulerZero;
using regina::LPConstraintNonSpun;
template <class LPConstraint>
void addLPInitialTableaux(pybind11::module_& m, const char* name) {
RDOC_SCOPE_BEGIN(LPInitialTableaux)
using Tableaux = LPInitialTableaux<LPConstraint>;
auto c = pybind11::class_<Tableaux>(m, name, rdoc_scope)
.def(pybind11::init<const Triangulation<3>&, NormalEncoding, bool>(),
pybind11::arg(), pybind11::arg(),
pybind11::arg("enumeration") = true,
rdoc::__init)
.def(pybind11::init<const Tableaux&>(), rdoc::__copy)
.def("swap", &Tableaux::swap, rdoc::swap)
.def("tri", &Tableaux::tri,
pybind11::return_value_policy::reference_internal, rdoc::tri)
.def("system", &Tableaux::system, rdoc::system)
.def("rank", &Tableaux::rank, rdoc::rank)
.def("columns", &Tableaux::columns, rdoc::columns)
.def("coordinateColumns", &Tableaux::coordinateColumns,
rdoc::coordinateColumns)
.def("columnPerm", [](const Tableaux& t) {
const size_t* perm = t.columnPerm();
pybind11::list ans;
for (size_t i = 0; i < t.columns(); ++i)
ans.append(perm[i]);
return ans;
}, rdoc::columnPerm)
.def("multColByRow", &Tableaux::template multColByRow<Integer>,
rdoc::multColByRow)
.def("multColByRowOct", &Tableaux::template multColByRowOct<Integer>,
rdoc::multColByRowOct)
.def("fillInitialTableaux",
&Tableaux::template fillInitialTableaux<Integer>,
rdoc::fillInitialTableaux)
;
regina::python::add_output(c);
// We need to think more about what a comparison between tableaux should
// test. In the meantime, don't make a decision we might regret later.
regina::python::disable_eq_operators(c);
regina::python::add_global_swap<Tableaux>(m, rdoc::global_swap);
RDOC_SCOPE_END
}
template <class LPConstraint>
void addLPData(pybind11::module_& m, const char* name) {
RDOC_SCOPE_BEGIN(LPData)
using Data = LPData<LPConstraint, Integer>;
auto c = pybind11::class_<Data>(m, name, rdoc_scope)
.def(pybind11::init<>(), rdoc::__default)
.def("swap", &Data::swap, rdoc::swap)
.def("reserve", &Data::reserve, rdoc::reserve)
.def("initStart", &Data::initStart, rdoc::initStart)
.def("initClone", &Data::initClone, rdoc::initClone)
.def("columns", &Data::columns, rdoc::columns)
.def("coordinateColumns", &Data::coordinateColumns,
rdoc::coordinateColumns)
.def("isFeasible", &Data::isFeasible, rdoc::isFeasible)
.def("isActive", &Data::isActive, rdoc::isActive)
.def("sign", &Data::sign, rdoc::sign)
.def("constrainZero", &Data::constrainZero, rdoc::constrainZero)
.def("constrainPositive", &Data::constrainPositive,
rdoc::constrainPositive)
.def("constrainOct", &Data::constrainOct, rdoc::constrainOct)
.def("extractSolution", [](const Data& d, const std::vector<int>& t) {
// Currently LPData does not give us an easy way to extract the
// expected length of the type vector, and so we cannot sanity-check
// the size of t right now. Probably we should add an access
// function to LPData that lets us view the original tableaux.
char* types = new char[t.size()];
std::copy(t.begin(), t.end(), types);
auto ans = d.template extractSolution<regina::VectorInt>(types);
delete[] types;
return ans;
}, rdoc::extractSolution)
;
regina::python::add_output(c);
// We need to think more about what a comparison between tableaux should
// test. Do we just compare basis indices? Do we do a deep comparison of
// all the internal data? Let's not force a decision right now.
regina::python::disable_eq_operators(c);
regina::python::add_global_swap<Data>(m, rdoc::global_swap);
RDOC_SCOPE_END
}
void addTreeLP(pybind11::module_& m) {
RDOC_SCOPE_BEGIN(LPMatrix)
auto c = pybind11::class_<LPMatrix<Integer>>(m, "LPMatrix", rdoc_scope)
.def(pybind11::init<>(), rdoc::__default)
.def(pybind11::init<size_t, size_t>(), rdoc::__init)
.def("swap", &LPMatrix<Integer>::swap, rdoc::swap)
.def("reserve", &LPMatrix<Integer>::reserve, rdoc::reserve)
.def("initClone", &LPMatrix<Integer>::initClone, rdoc::initClone)
.def("initIdentity", &LPMatrix<Integer>::initIdentity,
rdoc::initIdentity)
.def("entry", overload_cast<size_t, size_t>(&LPMatrix<Integer>::entry),
pybind11::return_value_policy::reference_internal, rdoc::entry)
.def("set", [](LPMatrix<Integer>& m, size_t row, size_t col,
const regina::Integer& value){
m.entry(row, col) = value;
}, rdoc::set)
.def("rows", &LPMatrix<Integer>::rows, rdoc::rows)
.def("columns", &LPMatrix<Integer>::columns, rdoc::columns)
.def("swapRows", &LPMatrix<Integer>::swapRows, rdoc::swapRows)
.def("combRow", &LPMatrix<Integer>::combRow, rdoc::combRow)
.def("combRowAndNorm", &LPMatrix<Integer>::combRowAndNorm,
rdoc::combRowAndNorm)
.def("negateRow", &LPMatrix<Integer>::negateRow, rdoc::negateRow)
;
regina::python::add_output(c);
regina::python::add_eq_operators(c, rdoc::__eq);
regina::python::add_global_swap<LPMatrix<Integer>>(m, rdoc::global_swap);
RDOC_SCOPE_SWITCH(LPSystem)
auto s = pybind11::class_<LPSystem>(m, "LPSystem", rdoc_scope)
.def(pybind11::init<NormalEncoding>(), rdoc::__init)
.def(pybind11::init<const LPSystem&>(), rdoc::__copy)
.def("normal", &LPSystem::normal, rdoc::normal)
.def("angle", &LPSystem::angle, rdoc::angle)
.def("standard", &LPSystem::standard, rdoc::standard)
.def("quad", &LPSystem::quad, rdoc::quad)
.def("coords", &LPSystem::coords, rdoc::coords)
;
regina::python::add_output(s);
regina::python::add_eq_operators(s, rdoc::__eq);
addLPInitialTableaux<LPConstraintNone>(m, "LPInitialTableaux");
addLPInitialTableaux<LPConstraintEulerPositive>(m,
"LPInitialTableaux_EulerPositive");
addLPInitialTableaux<LPConstraintEulerZero>(m,
"LPInitialTableaux_EulerZero");
addLPInitialTableaux<LPConstraintNonSpun>(m, "LPInitialTableaux_NonSpun");
addLPData<LPConstraintNone>(m, "LPData");
addLPData<LPConstraintEulerPositive>(m, "LPData_EulerPositive");
addLPData<LPConstraintEulerZero>(m, "LPData_EulerZero");
addLPData<LPConstraintNonSpun>(m, "LPData_NonSpun");
RDOC_SCOPE_END
}
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