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[WIP] Find and update std::optional usage in code base (#8272)

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* Initial plan

* Add try_get_value for std::map and use it in var_register.h and dioph_eq.cpp

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Add try_get_value overload for unordered_map with custom hash and use in lar_solver.cpp

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Remove redundant try_get_value template overload

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Remove std::map include and try_get_value overload from lp_utils.h

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
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Copilot 2026-01-21 19:55:36 -08:00 • committed by GitHub
parent b0313ca80a
commit c392592831
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4 changed files with 47 additions and 47 deletions
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51
src/math/lp/lar_solver.cpp
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@ -332,34 +332,38 @@ namespace lp {
if (!column_has_term(be.m_j)) {
if (coeff_map.size() != 1)
return false;
auto it = coeff_map.find(be.m_j);
if (it == coeff_map.end()) return false;
mpq ratio = it->second;
if (ratio < zero_of_type<mpq>()) {
kind = static_cast<lconstraint_kind>(-kind);
if (auto ratio_opt = try_get_value(coeff_map, be.m_j)) {
mpq ratio = *ratio_opt;
if (ratio < zero_of_type<mpq>()) {
kind = static_cast<lconstraint_kind>(-kind);
}
rs_of_evidence /= ratio;
} else {
return false;
}
rs_of_evidence /= ratio;
}
else {
lar_term const& t = get_term(be.m_j);
auto first_coeff = t.begin();
unsigned j = (*first_coeff).j();
auto it = coeff_map.find(j);
if (it == coeff_map.end())
if (auto ratio_opt = try_get_value(coeff_map, j)) {
mpq ratio = *ratio_opt / (*first_coeff).coeff();
for (auto p : t) {
if (auto coeff_opt = try_get_value(coeff_map, p.j())) {
if (p.coeff() * ratio != *coeff_opt)
return false;
} else {
return false;
}
}
if (ratio < zero_of_type<mpq>()) {
kind = static_cast<lconstraint_kind>(-kind);
}
rs_of_evidence /= ratio;
// rs_of_evidence += t->m_v * ratio;
} else {
return false;
mpq ratio = it->second / (*first_coeff).coeff();
for (auto p : t) {
it = coeff_map.find(p.j());
if (it == coeff_map.end())
return false;
if (p.coeff() * ratio != it->second)
return false;
}
if (ratio < zero_of_type<mpq>()) {
kind = static_cast<lconstraint_kind>(-kind);
}
rs_of_evidence /= ratio;
// rs_of_evidence += t->m_v * ratio;
}
return kind == be.kind() && rs_of_evidence == be.m_bound;
@ -2716,10 +2720,9 @@ namespace lp {
bool lar_solver::fetch_normalized_term_column(const lar_term& c, std::pair<mpq, lpvar>& a_j) const {
TRACE(lar_solver_terms, print_term_as_indices(c, tout << "looking for term ") << "\n";);
SASSERT(c.is_normalized());
auto it = m_imp->m_normalized_terms_to_columns.find(c);
if (it != m_imp->m_normalized_terms_to_columns.end()) {
TRACE(lar_solver_terms, tout << "got " << it->second << "\n";);
a_j = it->second;
if (auto result = try_get_value(m_imp->m_normalized_terms_to_columns, c)) {
TRACE(lar_solver_terms, tout << "got " << *result << "\n";);
a_j = *result;
return true;
}
TRACE(lar_solver_terms, tout << "have not found\n";);