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<?php |
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namespace Vanderlee\Comprehend\Core; |
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use Vanderlee\Comprehend\Parser\Parser; |
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use Vanderlee\Comprehend\Parser\Structure\Choice; |
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use Vanderlee\Comprehend\Parser\Structure\Sequence; |
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use Vanderlee\Comprehend\Parser\Terminal\Char; |
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use Vanderlee\Comprehend\Parser\Terminal\Text; |
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/** |
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* Process arguments |
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* |
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* @author Martijn |
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*/ |
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trait ArgumentsTrait |
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{ |
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/** |
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* Convert the argument to a parser |
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* |
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* @param mixed $argument |
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* @param bool $arrayToSequence if argument is an array, convert to Sequence (`true`) or Choice (`false`) |
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* @return Parser |
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*/ |
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protected static function getArgument($argument, $arrayToSequence = true) |
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{ |
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if (is_array($argument)) { |
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if (empty($argument)) { |
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throw new \InvalidArgumentException('Empty array argument'); |
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} elseif (count($argument) === 1) { |
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return self::getArgument(reset($argument)); |
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} |
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return $arrayToSequence ? new Sequence(...$argument) : new Choice(...$argument); |
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} elseif (is_string($argument)) { |
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switch (strlen($argument)) { |
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case 0: |
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throw new \InvalidArgumentException('Empty argument'); |
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case 1: |
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return new Char($argument); |
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default: |
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return new Text($argument); |
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} |
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} elseif (is_int($argument)) { |
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return new Char($argument); |
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} elseif ($argument instanceof Parser) { |
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return $argument; |
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} |
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throw new \InvalidArgumentException(sprintf('Invalid argument type `%1$s`', |
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is_object($argument) ? get_class($argument) : gettype($argument))); |
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} |
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protected static function getArguments($arguments, $arrayToSequence = true) |
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{ |
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return array_map(function ($argument) use ($arrayToSequence) { |
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return self::getArgument($argument, $arrayToSequence); |
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}, $arguments); |
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} |
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} |
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vanderlee /
Comprehend
