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<?php |
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declare(strict_types=1); |
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namespace Antlr\Antlr4\Runtime\Atn; |
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use Antlr\Antlr4\Runtime\Atn\States\ATNState; |
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use Antlr\Antlr4\Runtime\Atn\States\DecisionState; |
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use Antlr\Antlr4\Runtime\Comparison\Equality; |
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use Antlr\Antlr4\Runtime\Comparison\Hasher; |
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use Antlr\Antlr4\Runtime\PredictionContexts\PredictionContext; |
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final class LexerATNConfig extends ATNConfig |
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{ |
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/** @var LexerActionExecutor|null */ |
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private $lexerActionExecutor; |
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/** @var bool */ |
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private $passedThroughNonGreedyDecision; |
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public function __construct( |
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?self $oldConfig, |
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?ATNState $state, |
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?PredictionContext $context = null, |
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?LexerActionExecutor $executor = null, |
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?int $alt = null |
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) { |
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parent::__construct($oldConfig, $state, $context, null, $alt); |
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$this->lexerActionExecutor = $executor ?? ($oldConfig->lexerActionExecutor ?? null); |
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$this->passedThroughNonGreedyDecision = $oldConfig ? |
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self::checkNonGreedyDecision($oldConfig, $this->state) : |
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false; |
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} |
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public function getLexerActionExecutor() : ?LexerActionExecutor |
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{ |
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return $this->lexerActionExecutor; |
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} |
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public function isPassedThroughNonGreedyDecision() : bool |
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{ |
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return $this->passedThroughNonGreedyDecision; |
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} |
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public function hashCode() : int |
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{ |
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return Hasher::hash( |
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$this->state->stateNumber, |
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$this->alt, |
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$this->context, |
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$this->semanticContext, |
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$this->passedThroughNonGreedyDecision, |
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$this->lexerActionExecutor |
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); |
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} |
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public function equals(object $other) : bool |
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{ |
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if ($this === $other) { |
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return true; |
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} |
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if (!$other instanceof self) { |
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return false; |
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} |
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if (!parent::equals($other)) { |
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return false; |
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} |
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if ($this->passedThroughNonGreedyDecision !== $other->passedThroughNonGreedyDecision) { |
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return false; |
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} |
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return Equality::equals($this->lexerActionExecutor, $other->lexerActionExecutor); |
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} |
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private static function checkNonGreedyDecision(LexerATNConfig $source, ATNState $target) : bool |
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{ |
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return $source->passedThroughNonGreedyDecision || ($target instanceof DecisionState && $target->nonGreedy); |
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} |
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} |
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SetBased /
antlr-php-runtime
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