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33 lines
841 B
33 lines
841 B
<?php
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/** @license MIT
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* Copyright 2021 Dustin Wilson et al.
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* See LICENSE file for details */
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declare(strict_types=1);
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namespace MensBeam\Lit\Grammar;
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use MensBeam\Lit\GrammarRegistry;
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/**
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* Repository references act as a placeholder for named repository patterns in
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* rule lists
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*/
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class RepositoryReference extends Reference {
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protected string $_name;
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public function __construct(string $name, string $ownerGrammarScopeName) {
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$this->_name = $name;
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parent::__construct($ownerGrammarScopeName);
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}
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public function get(): ?Pattern {
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$grammar = GrammarRegistry::get($this->_ownerGrammarScopeName);
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if ($grammar->repository === null) {
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return null;
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}
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return (isset($grammar->repository[$this->_name])) ? $grammar->repository[$this->_name] : null;
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}
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}
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