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76 lines
2.0 KiB
76 lines
2.0 KiB
<?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 dW\Lit\Grammar;
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class Registry {
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protected static array $grammars = [];
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public static function clear(): bool {
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self::$grammars = [];
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return true;
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}
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public static function delete(string $scopeName): bool {
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try {
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unset(self::$grammars[$scopeName]);
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} catch (Exception $e) {
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return false;
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}
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return true;
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}
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public static function get(string $scopeName): array|bool {
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foreach (self::$grammars as $grammar) {
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if ($grammar['scopeName'] === $scopeName) {
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return $grammar;
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}
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}
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return false;
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}
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public static function import(string $jsonPath) {}
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public static function validate(string $grammar): bool {
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if ($grammar === null) {
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throw new \Exception("\"$jsonPath\" is not a valid grammar JSON file.".\PHP_EOL);
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}
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$requiredProperties = [
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'name',
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'patterns',
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'scopeName'
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];
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$missing = [];
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foreach ($requiredProperties as $r) {
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if (!array_key_exists($r, $grammar))) {
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$missing = $r;
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}
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}
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$missingLen = count($missing);
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if ($missingLen > 0) {
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if ($missingLen > 1) {
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if ($missingLen > 2) {
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$last = array_pop($missing);
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$missing = implode(', ', $missing);
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$missing .= ", and $last";
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} else {
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$missing = implode(' and ', $missing);
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}
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throw new \Exception("\"$jsonPath\" is missing the required $missing properties.".\PHP_EOL);
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}
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throw new \Exception("\"$jsonPath\" is missing the required {$missing[0]} property.".\PHP_EOL);
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}
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return true;
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}
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}
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