This stems from work in mglaman/phpstan-drupal#714 and mglaman/phpstan-drupal#659 in phpstan-drupal.

It's complicated, but it's based on this code:

$result = DeprecationHelper::backwardsCompatibleCall(
        currentVersion: \Drupal::VERSION,
        deprecatedVersion: '10.3',
        currentCallable: fn() => Role::loadMultiple(),
        deprecatedCallable: fn() => user_roles(),
      );

We want to use a DeprecatedScopeResolver to ensure the code called in the deprecatedCallable is within a deprecated scope. That's been accomplished in the PR with DeprecationHelperScope so far. However, it is including currentCallable (we want to find and error on deprecated code within that callable.)

Using a NodeVisitor it is possible to traverse the children in the deprecatedCallable tree and set a deprecated attribute. But, this attribute cannot be read using the Scope alone.

There are problems with backwards compatibility to modify \PHPStan\Rules\Deprecations\DeprecatedScopeResolver::isScopeDeprecated. So, this is my idea.

Introduce NodeAwareDeprecatedScopeResolver which DeprecatedScopeResolver implementations can also implement.

interface NodeAwareDeprecatedScopeResolver
{

	public function withNode(Node $node);

}

DeprecatedScopeHelper needs to be modified to support this:

	public function isScopeDeprecated(Scope $scope, Node $node): bool
	{
		foreach ($this->resolvers as $checker) {
			if ($checker instanceof NodeAwareDeprecatedScopeResolver) {
				$checker->withNode($node);
			}
			if ($checker->isScopeDeprecated($scope)) {
				return true;
			}
		}

		return false;
	}