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streamline pb solver interface and naming after removal of xor

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This commit is contained in:
Nikolaj Bjorner 2021-02-28 12:32:04 -08:00
parent 13f05ae9dc
commit 026065ff71
73 changed files with 1131 additions and 1201 deletions
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58
src/sat/smt/ba_constraint.cpp
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@ -1,58 +0,0 @@
/*++
Copyright (c) 2017 Microsoft Corporation
Module Name:
ba_constraint.cpp
Abstract:
Interface for constraints.
Author:
Nikolaj Bjorner (nbjorner) 2017-01-30
--*/
#include "sat/smt/ba_constraint.h"
namespace ba {
unsigned constraint::fold_max_var(unsigned w) const {
if (lit() != sat::null_literal) w = std::max(w, lit().var());
for (unsigned i = 0; i < size(); ++i) w = std::max(w, get_lit(i).var());
return w;
}
std::ostream& operator<<(std::ostream& out, constraint const& cnstr) {
if (cnstr.lit() != sat::null_literal) out << cnstr.lit() << " == ";
return cnstr.display(out);
}
bool constraint::is_watched(solver_interface const& s, literal lit) const {
return s.get_wlist(~lit).contains(sat::watched(cindex()));
}
void constraint::unwatch_literal(solver_interface& s, literal lit) {
sat::watched w(cindex());
s.get_wlist(~lit).erase(w);
SASSERT(!is_watched(s, lit));
}
void constraint::watch_literal(solver_interface& s, literal lit) {
if (is_pure() && lit == ~this->lit()) return;
SASSERT(!is_watched(s, lit));
sat::watched w(cindex());
s.get_wlist(~lit).push_back(w);
}
void constraint::nullify_tracking_literal(solver_interface& s) {
if (lit() != sat::null_literal) {
unwatch_literal(s, lit());
unwatch_literal(s, ~lit());
nullify_literal();
}
}
}