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Copy pathRecursionGuard.php
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53 lines (44 loc) · 948 Bytes
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<?php declare(strict_types = 1);
namespace PHPStan\Type;
use function spl_object_hash;
final class RecursionGuard
{
/** @var true[] */
private static array $context = [];
/**
* @template T
* @param callable(): T $callback
* @return T|ErrorType
*/
public static function run(Type $type, callable $callback)
{
$key = $type->describe(VerbosityLevel::value());
if (isset(self::$context[$key])) {
return new ErrorType();
}
try {
self::$context[$key] = true;
return $callback();
} finally {
unset(self::$context[$key]);
}
}
/**
* @template T
* @param callable(): T $callback
* @return T|ErrorType
*/
public static function runOnObjectIdentity(Type $type, callable $callback)
{
$key = spl_object_hash($type);
if (isset(self::$context[$key])) {
return new ErrorType();
}
try {
self::$context[$key] = true;
return $callback();
} finally {
unset(self::$context[$key]);
}
}
}