106     public function nextTokensInContext(ATNState $state, ?RuleContext $context) : IntervalSet  argument
108         return (new LL1Analyzer($this))->look($state, null, $context);
116     public function nextTokens(ATNState $state) : IntervalSet  argument
118         if ($state->nextTokenWithinRule !== null) {
119             return $state->nextTokenWithinRule;
122         $state->nextTokenWithinRule = $this->nextTokensInContext($state, null);
123         $state->nextTokenWithinRule->setReadOnly(true);
125         return $state->nextTokenWithinRule;
128     public function addState(?ATNState $state) : void  argument
130         if ($state === null) {
134         $state->atn = $this;
135         $state->stateNumber = \count($this->states);
137         $this->states[] = $state;
140     public function removeState(ATNState $state) : void  argument
143         unset($this->states[$state->stateNumber]);