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Replace manual pair unpacking with structured bindings (#8197)

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* Initial plan

* Apply structured bindings to enode_bool_pair usage

Replace manual unpacking of pairs with C++17 structured bindings in:
- src/ast/euf/euf_egraph.cpp
- src/smt/smt_internalizer.cpp
- src/smt/smt_context.cpp (2 locations)

This improves code readability and reduces boilerplate code.

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 2026-01-14 19:52:01 -08:00 • committed by GitHub
parent e7f9a31b25
commit 1bf463d77a
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3 changed files with 7 additions and 11 deletions
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8
src/smt/smt_context.cpp
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@ -653,8 +653,7 @@ namespace smt {
}
}
if (parent->is_cgc_enabled()) {
enode_bool_pair pair = m_cg_table.insert(parent);
enode * parent_prime = pair.first;
auto [parent_prime, used_commutativity] = m_cg_table.insert(parent);
if (parent_prime == parent) {
SASSERT(parent);
SASSERT(parent->is_cgr());
@ -665,7 +664,6 @@ namespace smt {
parent->m_cg = parent_prime;
SASSERT(!m_cg_table.contains_ptr(parent));
if (parent_prime->m_root != parent->m_root) {
bool used_commutativity = pair.second;
TRACE(cg, tout << "found new congruence: #" << parent->get_owner_id() << " = #" << parent_prime->get_owner_id()
<< " used_commutativity: " << used_commutativity << "\n";);
push_new_congruence(parent, parent_prime, used_commutativity);
@ -972,8 +970,8 @@ namespace smt {
(parent == cg || // parent was root of the congruence class before and after the merge
!congruent(parent, cg) // parent was root of the congruence class before but not after the merge
)) {
enode_bool_pair p = m_cg_table.insert(parent);
parent->m_cg = p.first;
auto [parent_cg, used_commutativity] = m_cg_table.insert(parent);
parent->m_cg = parent_cg;
}
}
}