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<?php /** * SCSSPHP * * @copyright 2012-2020 Leaf Corcoran * * @license http://opensource.org/licenses/MIT MIT * * @link http://scssphp.github.io/scssphp */ namespace ScssPhp\ScssPhp\Importer; /** * @internal */ final class ImportContext { private static ?CanonicalizeContext $context = null; /** * Whether the Sass compiler is currently evaluating an `@import` rule. * * When evaluating `@import` rules, URLs should canonicalize to an import-only * file if one exists for the URL being canonicalized. Otherwise, * canonicalization should be identical for `@import` and `@use` rules. It's * admittedly hacky to set this globally, but `@import` will eventually be * removed, at which point we can delete this and have one consistent behavior. */ public static function isFromImport(): bool { return self::$context?->isFromImport() ?? false; } /** * @template T * * @param callable(): T $callback * @return T * * @param-immediately-invoked-callable $callback */ public static function inImportRule(callable $callback) { if (self::$context !== null) { return self::$context->withFromImport(true, $callback); } return self::withCanonicalizeContext(new CanonicalizeContext(null, true), $callback); } public static function getCanonicalizeContext(): CanonicalizeContext { if (self::$context === null) { throw new \LogicException('canonicalizeContext may only be accessed within a call to canonicalize().'); } return self::$context; } /** * Runs $callback in the given context. * * @template T * * @param callable(): T $callback * @return T * * @param-immediately-invoked-callable $callback */ public static function withCanonicalizeContext(?CanonicalizeContext $canonicalizeContext, callable $callback) { $oldCanonicalizeContext = self::$context; self::$context = $canonicalizeContext; try { return $callback(); } finally { self::$context = $oldCanonicalizeContext; } } }
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