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<?php |
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namespace Vanderlee\Comprehend\Parser\Terminal; |
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use Vanderlee\Comprehend\Core\Context; |
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use Vanderlee\Comprehend\Parser\Parser; |
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/** |
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* Description of SetParser |
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* |
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* @author Martijn |
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*/ |
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class Set extends Parser |
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{ |
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use CaseSensitiveTrait; |
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private $set = null; |
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/** |
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* Match only characters inside the set (`true`) or outside (`false`). |
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* |
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* @var bool |
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*/ |
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private $include = true; |
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/** |
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* Match any single character in the set or not in the set. |
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* |
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* @param string $set |
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* @param bool $include Set to false to match only characters NOT in the set |
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* @throws \Exception |
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*/ |
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public function __construct(string $set, $include = true) |
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{ |
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if (mb_strlen($set) <= 0) { |
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throw new \InvalidArgumentException('Empty set'); |
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} |
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$this->set = count_chars($set, 3); |
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$this->include = (bool)$include; |
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} |
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protected function parse(&$input, $offset, Context $context) |
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{ |
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if ($offset >= mb_strlen($input)) { |
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return $this->failure($input, $offset); |
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} |
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$this->pushCaseSensitivityToContext($context); |
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if (strchr($context->handleCase($this->set), $context->handleCase($input[$offset])) !== false) { |
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$this->popCaseSensitivityFromContext($context); |
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return $this->makeMatch($this->include, $input, $offset, 1); |
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} |
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$this->popCaseSensitivityFromContext($context); |
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return $this->makeMatch(!$this->include, $input, $offset, 1); |
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} |
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public function __toString() |
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{ |
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return ($this->include ? '' : chr(0xAC)) . '( \'' . join('\' | \'', str_split($this->set)) . '\' )'; |
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} |
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} |
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vanderlee /
Comprehend
