void collect(expr * t, expr_fast_mark1 & visited) {
rational k;
visit(t, visited);
while (!m_todo.empty()) {
checkpoint();
expr * t = m_todo.back();
m_todo.pop_back();
if (is_var(t))
continue;
if (is_quantifier(t)) {
unsigned num_children = to_quantifier(t)->get_num_children();
for (unsigned i = 0; i < num_children; i ++)
visit(to_quantifier(t)->get_child(i), visited);
}
else {
SASSERT(is_app(t));
if (m_autil.is_power(t) && m_autil.is_numeral(to_app(t)->get_arg(1), k) && k.is_int() && k.is_pos()) {
expr * arg = to_app(t)->get_arg(0);
save_degree(arg, k);
visit_args(arg, visited);
}
else {
visit_args(t, visited);
}
}
}
}
void visit_args(expr * t, expr_fast_mark1 & visited) {
if (is_app(t)) {
for (expr * arg : *to_app(t)) {
save_degree(arg, m_one);
visit(arg, visited);
}
}
}
void visit_args(expr * t, expr_fast_mark1 & visited) {
if (is_app(t)) {
unsigned num_args = to_app(t)->get_num_args();
for (unsigned i = 0; i < num_args; i++) {
expr * arg = to_app(t)->get_arg(i);
save_degree(arg, m_one);
visit(arg, visited);
}
}
}
