Lines Matching refs:null
23 * @param array<string>|null $ruleNames
25 public static function toStringTree(Tree $tree, ?array $ruleNames = null) : string
41 if ($child !== null) {
50 * @param array<string>|null $ruleNames
54 if ($ruleNames !== null) {
71 if ($tree instanceof TerminalNode && $tree->getSymbol() !== null) {
89 * @return array<Tree|null>
112 while ($tree !== null) {
163 if ($child !== null) {
180 if ($child !== null) {