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Use nullptr.

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This commit is contained in:
Bruce Mitchener 2018-02-12 14:05:55 +07:00
parent f01328c65f
commit 76eb7b9ede
625 changed files with 4639 additions and 4639 deletions
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18
src/ast/substitution/substitution_tree.cpp
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@ -172,7 +172,7 @@ substitution_tree::node * substitution_tree::find_best_child(node * r) {
#ifdef Z3DEBUG
unsigned todo_size = m_todo.size();
#endif
node * best_child = 0;
node * best_child = nullptr;
unsigned max_measure = 0;
node * curr_child = r->m_first_child;
while (curr_child) {
@ -335,7 +335,7 @@ void substitution_tree::insert(app * new_expr) {
else {
mark_used_regs(r->m_subst);
node * best_child = find_best_child(r);
if (best_child == 0) {
if (best_child == nullptr) {
// there is no compatible child
node * n = mk_node_for(new_expr);
n->m_next_sibling = r->m_first_child;
@ -414,7 +414,7 @@ bool substitution_tree::is_fully_compatible(svector<subst> const & sv) {
*/
bool substitution_tree::find_fully_compatible_child(node * r, node * & prev, node * & child) {
SASSERT(!r->m_leaf);
prev = 0;
prev = nullptr;
child = r->m_first_child;
while (child) {
if (is_fully_compatible(child->m_subst))
@ -462,8 +462,8 @@ void substitution_tree::erase(app * e) {
m_todo.push_back(0);
node * r = m_roots[id];
node * parent = 0;
node * prev = 0;
node * parent = nullptr;
node * prev = nullptr;
while (true) {
svector<subst> & sv = r->m_subst;
@ -495,12 +495,12 @@ void substitution_tree::erase(app * e) {
if (m_todo.empty()) {
reset_registers(0);
SASSERT(r->m_expr == e);
if (parent == 0) {
if (parent == nullptr) {
delete_node(r);
m_roots[id] = 0;
}
else if (at_least_3_children(parent)) {
if (prev == 0)
if (prev == nullptr)
parent->m_first_child = r->m_next_sibling;
else
prev->m_next_sibling = r->m_next_sibling;
@ -843,7 +843,7 @@ void substitution_tree::visit(expr * e, st_visitor & st, unsigned in_offset, uns
ptr_vector<node>::iterator end = m_roots.end();
for (; it != end; ++it) {
node * r = *it;
if (r != 0) {
if (r != nullptr) {
var * v = r->m_subst[0].first;
if (v->get_sort() == to_var(e)->get_sort())
if (!visit<Mode>(e, st, r))
@ -878,7 +878,7 @@ void substitution_tree::display(std::ostream & out) const {
ptr_vector<var_ref_vector>::const_iterator end2 = m_vars.end();
for (; it2 != end2; ++it2) {
var_ref_vector * v = *it2;
if (v == 0)
if (v == nullptr)
continue; // m_vars may contain null pointers. See substitution_tree::insert.
unsigned num = v->size();
for (unsigned i = 0; i < num; i++) {