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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Strings; |
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/** |
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* `MemoizedCombinedRegexp` is a decorator for {@see AbstractCombinedRegexp} that caches results of |
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* - {@see AbstractCombinedRegexp::matches()} |
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* - {@see AbstractCombinedRegexp::getMatchingPattern()} |
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* - {@see AbstractCombinedRegexp::getMatchingPatternPosition()}. |
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*/ |
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final class MemoizedCombinedRegexp extends AbstractCombinedRegexp |
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{ |
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/** |
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* @var array<string, array{matches:bool, position?:int}> |
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*/ |
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private array $results = []; |
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public function __construct( |
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private AbstractCombinedRegexp $decorated, |
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) { |
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} |
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public function getCompiledPattern(): string |
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{ |
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return $this->decorated->getCompiledPattern(); |
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} |
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public function matches(string $string): bool |
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{ |
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$this->evaluate($string); |
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return $this->results[$string]['matches']; |
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} |
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public function getMatchingPattern(string $string): string |
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{ |
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$this->evaluate($string); |
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return $this->getPatterns()[$this->getMatchingPatternPosition($string)]; |
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} |
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public function getMatchingPatternPosition(string $string): int |
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{ |
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$this->evaluate($string); |
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return $this->results[$string]['position'] ?? $this->throwFailedMatchException($string); |
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} |
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private function evaluate(string $string): void |
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{ |
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if (isset($this->results[$string])) { |
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return; |
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} |
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try { |
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$position = $this->decorated->getMatchingPatternPosition($string); |
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$this->results[$string]['matches'] = true; |
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$this->results[$string]['position'] = $position; |
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} catch (\Exception) { |
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$this->results[$string]['matches'] = false; |
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} |
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} |
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public function getPatterns(): array |
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{ |
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return $this->decorated->getPatterns(); |
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} |
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1 |
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public function getFlags(): string |
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{ |
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1 |
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return $this->decorated->getFlags(); |
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} |
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} |
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yiisoft /
strings
