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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\Compiler\Grammar\PP2\Delegate; |
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use Railt\Compiler\Exception\IncludeNotFoundException; |
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use Railt\Compiler\Grammar\PP2; |
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use Railt\Io\File; |
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use Railt\Io\Readable; |
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use Railt\Parser\Ast\LeafInterface; |
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use Railt\Parser\Ast\Rule; |
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use Railt\Parser\Environment; |
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/** |
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* Class IncludeDelegate |
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*/ |
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class IncludeDelegate extends Rule |
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{ |
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/** |
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* @var string[] |
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*/ |
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private const FILE_EXTENSIONS = ['', '.pp', '.pp2']; |
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/** |
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* @var Readable |
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*/ |
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private $file; |
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/** |
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* IncludeDelegate constructor. |
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* @param Environment $env |
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* @param string $name |
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* @param array $children |
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* @param int $offset |
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*/ |
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public function __construct(Environment $env, string $name, array $children = [], int $offset = 0) |
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{ |
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$this->file = $env->get(PP2::ENV_FILE); |
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parent::__construct($env, $name, $children, $offset); |
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} |
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/** |
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* @return Readable |
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* @throws \Railt\Io\Exception\ExternalFileException |
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*/ |
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public function getFile(): Readable |
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{ |
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$path = $this->getIncludePathname(); |
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try { |
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foreach (self::FILE_EXTENSIONS as $ext) { |
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if (\is_file($path . $ext)) { |
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return File::fromPathname($path . $ext); |
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} |
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} |
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} catch (\Throwable $e) { |
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throw (new IncludeNotFoundException($e->getMessage())) |
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->throwsIn($this->file, $this->getOffset()); |
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} |
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$error = \sprintf('Could not include file "%s" from "%s"', $path, $this->file->getPathname()); |
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throw (new IncludeNotFoundException($error))->throwsIn($this->file, $this->getOffset()); |
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} |
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/** |
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* @return string |
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*/ |
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private function getIncludePathname(): string |
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{ |
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$path = \dirname($this->file->getPathname()) . '/' . $this->getIncludeValue(); |
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return \str_replace(['\\\\', '\\'], '/', $path); |
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} |
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/** |
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* @return string |
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*/ |
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private function getIncludeValue(): string |
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{ |
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/** @var LeafInterface $token */ |
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$token = $this->first('T_INCLUDE'); |
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return \trim($token->getValue(1), " \t\n\r\0\x0B\"\\/'"); |
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} |
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} |
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railt /
compiler
