function FetchingClassConstOfDeprecatedClassRule::processNode

File

vendor/phpstan/phpstan-deprecation-rules/src/Rules/Deprecations/FetchingClassConstOfDeprecatedClassRule.php, line 47

Class

FetchingClassConstOfDeprecatedClassRule

@implements Rule<ClassConstFetch>

Namespace

PHPStan\Rules\Deprecations

Code

public function processNode(Node $node, Scope $scope) : array {
    if ($this->deprecatedScopeHelper
        ->isScopeDeprecated($scope)) {
        return [];
    }
    if (!$node->name instanceof Identifier) {
        return [];
    }
    $constantName = $node->name->name;
    $referencedClasses = [];
    if ($node->class instanceof Name) {
        $referencedClasses[] = $scope->resolveName($node->class);
    }
    else {
        $classTypeResult = $this->ruleLevelHelper
            ->findTypeToCheck($scope, $node->class, '', static function (Type $type) use ($constantName) : bool {
            return $type->canAccessConstants()
                ->yes() && $type->hasConstant($constantName)
                ->yes();
        });
        if ($classTypeResult->getType() instanceof ErrorType) {
            return [];
        }
        $referencedClasses = $classTypeResult->getReferencedClasses();
    }
    $errors = [];
    foreach ($referencedClasses as $referencedClass) {
        try {
            $class = $this->reflectionProvider
                ->getClass($referencedClass);
        } catch (ClassNotFoundException $e) {
            continue;
        }
        if ($class->isDeprecated()) {
            $classDescription = $class->getDeprecatedDescription();
            if ($classDescription === null) {
                $errors[] = RuleErrorBuilder::message(sprintf('Fetching class constant %s of deprecated %s %s.', $constantName, strtolower($class->getClassTypeDescription()), $referencedClass))
                    ->identifier(sprintf('classConstant.deprecated%s', $class->getClassTypeDescription()))
                    ->build();
            }
            else {
                $errors[] = RuleErrorBuilder::message(sprintf("Fetching class constant %s of deprecated %s %s:\n%s", $constantName, strtolower($class->getClassTypeDescription()), $referencedClass, $classDescription))
                    ->identifier(sprintf('classConstant.deprecated%s', $class->getClassTypeDescription()))
                    ->build();
            }
        }
        if (strtolower($constantName) === 'class') {
            continue;
        }
        if (!$class->hasConstant($constantName)) {
            continue;
        }
        $constantReflection = $class->getConstant($constantName);
        if (!$constantReflection->isDeprecated()
            ->yes()) {
            continue;
        }
        $description = $constantReflection->getDeprecatedDescription();
        if ($description === null) {
            $errors[] = RuleErrorBuilder::message(sprintf('Fetching deprecated class constant %s of %s %s.', $constantName, strtolower($class->getClassTypeDescription()), $referencedClass))
                ->identifier('classConstant.deprecated')
                ->build();
        }
        else {
            $errors[] = RuleErrorBuilder::message(sprintf("Fetching deprecated class constant %s of %s %s:\n%s", $constantName, strtolower($class->getClassTypeDescription()), $referencedClass, $description))
                ->identifier('classConstant.deprecated')
                ->build();
        }
    }
    return $errors;
}