bool
SValue::may_equal(const BaseSemantics::SValuePtr &other_, const SmtSolverPtr &solver) const
{
SValuePtr other = SValue::promote(other_);
for (size_t i=0; i<subvalues.size(); ++i) {
if (is_valid(i) && other->is_valid(i) && get_subvalue(i)->may_equal(other->get_subvalue(i), solver))
return true;
}
return false;
}
bool
SValue::must_equal(const BaseSemantics::SValuePtr &other_, const SmtSolverPtr &solver) const
{
SValuePtr other = SValue::promote(other_);
size_t nconsidered = 0;
for (size_t i=0; i<subvalues.size(); ++i) {
if (is_valid(i) && other->is_valid(i)) {
if (!get_subvalue(i)->must_equal(other->get_subvalue(i), solver))
return false;
++nconsidered;
}
}
return nconsidered>0;
}