File "CheckTypeDeclarationsPass.php"
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\DependencyInjection\Compiler;
use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\Exception\InvalidParameterTypeException;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
use Symfony\Component\DependencyInjection\ExpressionLanguage;
use Symfony\Component\DependencyInjection\Parameter;
use Symfony\Component\DependencyInjection\ParameterBag\EnvPlaceholderParameterBag;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\DependencyInjection\ServiceLocator;
use Symfony\Component\ExpressionLanguage\Expression;
/**
* Checks whether injected parameters are compatible with type declarations.
*
* This pass should be run after all optimization passes.
*
* It can be added either:
* * before removing passes to check all services even if they are not currently used,
* * after removing passes to check only services are used in the app.
*
* @author Nicolas Grekas <p@tchwork.com>
* @author Julien Maulny <jmaulny@darkmira.fr>
*/
final class CheckTypeDeclarationsPass extends AbstractRecursivePass
{
private const SCALAR_TYPES = [
'int' => true,
'float' => true,
'bool' => true,
'string' => true,
];
private const BUILTIN_TYPES = [
'array' => true,
'bool' => true,
'callable' => true,
'float' => true,
'int' => true,
'iterable' => true,
'object' => true,
'string' => true,
];
private $autoload;
private $skippedIds;
private $expressionLanguage;
/**
* @param bool $autoload Whether services who's class in not loaded should be checked or not.
* Defaults to false to save loading code during compilation.
* @param array $skippedIds An array indexed by the service ids to skip
*/
public function __construct(bool $autoload = false, array $skippedIds = [])
{
$this->autoload = $autoload;
$this->skippedIds = $skippedIds;
}
/**
* {@inheritdoc}
*/
protected function processValue($value, bool $isRoot = false)
{
if (isset($this->skippedIds[$this->currentId])) {
return $value;
}
if (!$value instanceof Definition || $value->hasErrors() || $value->isDeprecated()) {
return parent::processValue($value, $isRoot);
}
if (!$this->autoload) {
if (!$class = $value->getClass()) {
return parent::processValue($value, $isRoot);
}
if (!class_exists($class, false) && !interface_exists($class, false)) {
return parent::processValue($value, $isRoot);
}
}
if (ServiceLocator::class === $value->getClass()) {
return parent::processValue($value, $isRoot);
}
if ($constructor = $this->getConstructor($value, false)) {
$this->checkTypeDeclarations($value, $constructor, $value->getArguments());
}
foreach ($value->getMethodCalls() as $methodCall) {
try {
$reflectionMethod = $this->getReflectionMethod($value, $methodCall[0]);
} catch (RuntimeException $e) {
if ($value->getFactory()) {
continue;
}
throw $e;
}
$this->checkTypeDeclarations($value, $reflectionMethod, $methodCall[1]);
}
return parent::processValue($value, $isRoot);
}
/**
* @throws InvalidArgumentException When not enough parameters are defined for the method
*/
private function checkTypeDeclarations(Definition $checkedDefinition, \ReflectionFunctionAbstract $reflectionFunction, array $values): void
{
$numberOfRequiredParameters = $reflectionFunction->getNumberOfRequiredParameters();
if (\count($values) < $numberOfRequiredParameters) {
throw new InvalidArgumentException(sprintf('Invalid definition for service "%s": "%s::%s()" requires %d arguments, %d passed.', $this->currentId, $reflectionFunction->class, $reflectionFunction->name, $numberOfRequiredParameters, \count($values)));
}
$reflectionParameters = $reflectionFunction->getParameters();
$checksCount = min($reflectionFunction->getNumberOfParameters(), \count($values));
$envPlaceholderUniquePrefix = $this->container->getParameterBag() instanceof EnvPlaceholderParameterBag ? $this->container->getParameterBag()->getEnvPlaceholderUniquePrefix() : null;
for ($i = 0; $i < $checksCount; ++$i) {
if (!$reflectionParameters[$i]->hasType() || $reflectionParameters[$i]->isVariadic()) {
continue;
}
$this->checkType($checkedDefinition, $values[$i], $reflectionParameters[$i], $envPlaceholderUniquePrefix);
}
if ($reflectionFunction->isVariadic() && ($lastParameter = end($reflectionParameters))->hasType()) {
$variadicParameters = \array_slice($values, $lastParameter->getPosition());
foreach ($variadicParameters as $variadicParameter) {
$this->checkType($checkedDefinition, $variadicParameter, $lastParameter, $envPlaceholderUniquePrefix);
}
}
}
/**
* @throws InvalidParameterTypeException When a parameter is not compatible with the declared type
*/
private function checkType(Definition $checkedDefinition, $value, \ReflectionParameter $parameter, ?string $envPlaceholderUniquePrefix, \ReflectionType $reflectionType = null): void
{
$reflectionType = $reflectionType ?? $parameter->getType();
if ($reflectionType instanceof \ReflectionUnionType) {
foreach ($reflectionType->getTypes() as $t) {
try {
$this->checkType($checkedDefinition, $value, $parameter, $envPlaceholderUniquePrefix, $t);
return;
} catch (InvalidParameterTypeException $e) {
}
}
throw new InvalidParameterTypeException($this->currentId, $e->getCode(), $parameter);
}
if ($reflectionType instanceof \ReflectionIntersectionType) {
foreach ($reflectionType->getTypes() as $t) {
$this->checkType($checkedDefinition, $value, $parameter, $envPlaceholderUniquePrefix, $t);
}
return;
}
if (!$reflectionType instanceof \ReflectionNamedType) {
return;
}
$type = $reflectionType->getName();
if ($value instanceof Reference) {
if (!$this->container->has($value = (string) $value)) {
return;
}
if ('service_container' === $value && is_a($type, Container::class, true)) {
return;
}
$value = $this->container->findDefinition($value);
}
if ('self' === $type) {
$type = $parameter->getDeclaringClass()->getName();
}
if ('static' === $type) {
$type = $checkedDefinition->getClass();
}
$class = null;
if ($value instanceof Definition) {
if ($value->getFactory()) {
return;
}
$class = $value->getClass();
if ($class && isset(self::BUILTIN_TYPES[strtolower($class)])) {
$class = strtolower($class);
} elseif (!$class || (!$this->autoload && !class_exists($class, false) && !interface_exists($class, false))) {
return;
}
} elseif ($value instanceof Parameter) {
$value = $this->container->getParameter($value);
} elseif ($value instanceof Expression) {
try {
$value = $this->getExpressionLanguage()->evaluate($value, ['container' => $this->container]);
} catch (\Exception $e) {
// If a service from the expression cannot be fetched from the container, we skip the validation.
return;
}
} elseif (\is_string($value)) {
if ('%' === ($value[0] ?? '') && preg_match('/^%([^%]+)%$/', $value, $match)) {
$value = $this->container->getParameter(substr($value, 1, -1));
}
if ($envPlaceholderUniquePrefix && \is_string($value) && str_contains($value, 'env_')) {
// If the value is an env placeholder that is either mixed with a string or with another env placeholder, then its resolved value will always be a string, so we don't need to resolve it.
// We don't need to change the value because it is already a string.
if ('' === preg_replace('/'.$envPlaceholderUniquePrefix.'_\w+_[a-f0-9]{32}/U', '', $value, -1, $c) && 1 === $c) {
try {
$value = $this->container->resolveEnvPlaceholders($value, true);
} catch (\Exception $e) {
// If an env placeholder cannot be resolved, we skip the validation.
return;
}
}
}
}
if (null === $value && $parameter->allowsNull()) {
return;
}
if (null === $class) {
if ($value instanceof IteratorArgument) {
$class = RewindableGenerator::class;
} elseif ($value instanceof ServiceClosureArgument) {
$class = \Closure::class;
} elseif ($value instanceof ServiceLocatorArgument) {
$class = ServiceLocator::class;
} elseif (\is_object($value)) {
$class = \get_class($value);
} else {
$class = \gettype($value);
$class = ['integer' => 'int', 'double' => 'float', 'boolean' => 'bool'][$class] ?? $class;
}
}
if (isset(self::SCALAR_TYPES[$type]) && isset(self::SCALAR_TYPES[$class])) {
return;
}
if ('string' === $type && method_exists($class, '__toString')) {
return;
}
if ('callable' === $type && (\Closure::class === $class || method_exists($class, '__invoke'))) {
return;
}
if ('callable' === $type && \is_array($value) && isset($value[0]) && ($value[0] instanceof Reference || $value[0] instanceof Definition || \is_string($value[0]))) {
return;
}
if ('iterable' === $type && (\is_array($value) || 'array' === $class || is_subclass_of($class, \Traversable::class))) {
return;
}
if ($type === $class) {
return;
}
if ('object' === $type && !isset(self::BUILTIN_TYPES[$class])) {
return;
}
if ('mixed' === $type) {
return;
}
if (is_a($class, $type, true)) {
return;
}
if ('false' === $type) {
if (false === $value) {
return;
}
} elseif ($reflectionType->isBuiltin()) {
$checkFunction = sprintf('is_%s', $type);
if ($checkFunction($value)) {
return;
}
}
throw new InvalidParameterTypeException($this->currentId, \is_object($value) ? $class : get_debug_type($value), $parameter);
}
private function getExpressionLanguage(): ExpressionLanguage
{
if (null === $this->expressionLanguage) {
$this->expressionLanguage = new ExpressionLanguage(null, $this->container->getExpressionLanguageProviders());
}
return $this->expressionLanguage;
}
}