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<?php |
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namespace Barryvanveen\CCA; |
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use Barryvanveen\CCA\Exceptions\LoopNotFoundException; |
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class Runner |
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{ |
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/** @var Config */ |
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protected $config; |
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/** @var CCA */ |
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protected $cca; |
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public function __construct(Config $config, CCA $cca) |
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{ |
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$this->config = $config; |
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$this->cca = $cca; |
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} |
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/** |
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* Run the CCA and return the $numIterations-th state. |
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* |
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* @param int $numIterations |
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* |
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* @return State |
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*/ |
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public function getLastState(int $numIterations): State |
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{ |
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do { |
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$state = $this->cca->getState(); |
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$iteration = $this->cca->cycle(); |
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} while ($iteration < $numIterations); |
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return $state; |
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} |
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/** |
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* Run the CCA and return an array with first $numIterations states. |
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* |
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* @param int $numIterations |
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* |
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* @return State[] |
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*/ |
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public function getFirstStates(int $numIterations): array |
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{ |
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$states = []; |
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do { |
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$states[] = $this->cca->getState(); |
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$iteration = $this->cca->cycle(); |
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} while ($iteration < $numIterations); |
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return $states; |
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} |
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/** |
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* Run the CCA and return the first looping states it encounters. If no loop is found within $maxIterations, |
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* a LoopNotFoundException exception will be thrown. |
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* |
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* @param int $maxIterations |
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* |
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* @throws LoopNotFoundException |
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* |
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* @return State[] |
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*/ |
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public function getFirstLoop(int $maxIterations) |
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{ |
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$states = []; |
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$hashes = []; |
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do { |
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$state = $this->cca->getState(); |
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$hash = $state->toHash(); |
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$cycleEnd = false; |
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if ($cycleStart = array_search($hash, $hashes) !== false) { |
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$cycleEnd = count($states)+1; |
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} |
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$states[] = $state; |
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$hashes[] = $hash; |
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if ($cycleEnd !== false) { |
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$states = array_slice($states, $cycleStart, $cycleEnd); |
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return $states; |
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} |
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$iteration = $this->cca->cycle(); |
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} while ($iteration < $maxIterations); |
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throw new LoopNotFoundException(); |
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} |
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} |
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barryvanveen /
php-cca
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