Lines Matching refs:null
39 * @var Set|null
59 * @var BitSet|null
83 /** @var int|null */
139 public function add(ATNConfig $config, ?DoubleKeyMap $mergeCache = null) : bool
141 if ($this->readOnly || $this->configLookup === null) {
153 if ($this->configLookup === null) {
161 $this->cachedHashCode = null;
171 if ($existing->context === null || $config->context === null) {
172 throw new \RuntimeException('Unexpected null context.');
210 if ($config !== null) {
227 if ($config !== null) {
257 if ($this->readOnly || $this->configLookup === null) {
266 if ($config !== null && $config->context !== null) {
306 if ($this->cachedHashCode === null) {
325 if ($this->configLookup === null) {
363 $this->configLookup = null; // can't mod, no need for lookup cache
384 $this->conflictingAlts !== null ? ',conflictingAlts=' . $this->conflictingAlts : '',