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<?php |
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/** |
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* This file is part of Railt package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Railt\SDL\Builder; |
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use Railt\Io\Readable; |
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use Railt\Parser\Ast\RuleInterface; |
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use Railt\SDL\Exception\SyntaxException; |
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/** |
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* Class Utils |
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*/ |
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class Utils |
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{ |
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/** |
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* @param RuleInterface $rule |
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* @return string|null |
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*/ |
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public static function findName(RuleInterface $rule): ?string |
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{ |
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foreach ($rule->getChildren() as $child) { |
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if ($child->getName() === 'Name') { |
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return $child->getValue(); |
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} |
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} |
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return null; |
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} |
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/** |
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* @param Readable $file |
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* @param RuleInterface $rule |
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* @return string |
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* @throws SyntaxException |
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*/ |
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public static function getName(Readable $file, RuleInterface $rule): string |
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{ |
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if (($name = static::findName($rule)) !== null) { |
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return $name; |
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} |
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$exception = new SyntaxException('Unable to determine type name'); |
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$exception->throwsIn($file, $rule->getOffset()); |
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throw $exception; |
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} |
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/** |
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* @param RuleInterface $rule |
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* @return string|null |
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*/ |
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public static function findDescription(RuleInterface $rule): ?string |
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{ |
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return static::leaf($rule, 'Description'); |
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} |
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/** |
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* @param RuleInterface $rule |
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* @param string $name |
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* @param int $group |
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* @return string|null |
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*/ |
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public static function leaf(RuleInterface $rule, string $name, int $group = 0): ?string |
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{ |
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if ($rule = static::rule($rule, $name)) { |
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return $rule->getValue($group); |
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} |
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return null; |
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} |
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/** |
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* @param RuleInterface $rule |
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* @param string $name |
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* @return RuleInterface|null |
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*/ |
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public static function rule(RuleInterface $rule, string $name): ?RuleInterface |
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{ |
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foreach ($rule->getChildren() as $child) { |
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if ($child->getName() === $name) { |
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return $child; |
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} |
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} |
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return null; |
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} |
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} |
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railt /
sdl
