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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; |
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use Psr\Log\LoggerAwareInterface; |
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use Psr\Log\LoggerAwareTrait; |
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use Psr\Log\LoggerInterface; |
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use Railt\Io\Readable; |
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use Railt\Parser\Ast\RuleInterface; |
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use Railt\Parser\Exception\UnexpectedTokenException; |
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use Railt\Parser\Exception\UnrecognizedTokenException; |
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use Railt\SDL\Exception\SyntaxException; |
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use Railt\SDL\Frontend\Builder; |
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use Railt\SDL\Frontend\Context\ContextInterface; |
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use Railt\SDL\Frontend\Context\GlobalContext; |
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use Railt\SDL\Frontend\Parser; |
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use Railt\SDL\IR\DefinitionValueObject; |
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use Railt\SDL\IR\SymbolTable; |
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/** |
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* Class Frontend |
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*/ |
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class Frontend implements LoggerAwareInterface |
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{ |
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use LoggerAwareTrait; |
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/** |
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* @var Builder |
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*/ |
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private $builder; |
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/** |
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* Frontend constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->builder = new Builder(); |
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} |
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/** |
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* @param Readable $file |
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* @return iterable |
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* @throws SyntaxException |
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* @throws \Railt\Io\Exception\ExternalFileException |
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*/ |
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public function load(Readable $file) |
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{ |
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return $this->buildFile($file); |
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} |
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/** |
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* @param Readable $readable |
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* @return iterable |
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* @throws SyntaxException |
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* @throws \Railt\Io\Exception\ExternalFileException |
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*/ |
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public function buildFile(Readable $readable) |
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{ |
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$process = $this->builder->buildFile($readable); |
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/** |
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* @var ContextInterface $context |
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* @var mixed $result |
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*/ |
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foreach ($process as [$context, $result]) { |
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if ($this->filter($context, $result)) { |
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yield $result; |
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} |
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} |
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} |
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/** |
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* @param ContextInterface $ctx |
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* @param mixed $result |
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* @return bool |
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*/ |
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private function filter(ContextInterface $ctx, $result): bool |
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{ |
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return $result !== null; |
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} |
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/** |
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* @param LoggerInterface $logger |
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* @return Frontend |
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*/ |
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public function setLogger(LoggerInterface $logger): self |
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{ |
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$this->logger = $logger; |
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return $this; |
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} |
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} |
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railt /
sdl
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.