[HttpFoundation] Add types to private/final/internal methods and constructors.

src/Symfony/Component/HttpFoundation/Request.php

@@ -1817,12 +1817,12 @@ class Request
             $requestUri = '/'.$requestUri;
         }
 
-        if ($baseUrl && false !== $prefix = $this->getUrlencodedPrefix($requestUri, $baseUrl)) {
+        if ($baseUrl && null !== $prefix = $this->getUrlencodedPrefix($requestUri, $baseUrl)) {
             // full $baseUrl matches
             return $prefix;
         }
 
-        if ($baseUrl && false !== $prefix = $this->getUrlencodedPrefix($requestUri, rtrim(\dirname($baseUrl), '/'.\DIRECTORY_SEPARATOR).'/')) {
+        if ($baseUrl && null !== $prefix = $this->getUrlencodedPrefix($requestUri, rtrim(\dirname($baseUrl), '/'.\DIRECTORY_SEPARATOR).'/')) {
             // directory portion of $baseUrl matches
             return rtrim($prefix, '/'.\DIRECTORY_SEPARATOR);
         }
@@ -1941,14 +1941,12 @@ class Request
 
     /**
      * Returns the prefix as encoded in the string when the string starts with
-     * the given prefix, false otherwise.
-     *
-     * @return string|false The prefix as it is encoded in $string, or false
+     * the given prefix, null otherwise.
      */
-    private function getUrlencodedPrefix(string $string, string $prefix)
+    private function getUrlencodedPrefix(string $string, string $prefix): ?string
     {
         if (0 !== strpos(rawurldecode($string), $prefix)) {
-            return false;
+            return null;
         }
 
         $len = \strlen($prefix);
@@ -1957,10 +1955,10 @@ class Request
             return $match[0];
         }
 
-        return false;
+        return null;
     }
 
-    private static function createRequestFromFactory(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
+    private static function createRequestFromFactory(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null): self
     {
         if (self::$requestFactory) {
             $request = (self::$requestFactory)($query, $request, $attributes, $cookies, $files, $server, $content);

src/Symfony/Component/HttpFoundation/Session/SessionBagProxy.php

@@ -22,7 +22,7 @@ final class SessionBagProxy implements SessionBagInterface
     private $data;
     private $usageIndex;
 
-    public function __construct(SessionBagInterface $bag, array &$data, &$usageIndex)
+    public function __construct(SessionBagInterface $bag, array &$data, ?int &$usageIndex)
     {
         $this->bag = $bag;
         $this->data = &$data;

src/Symfony/Component/HttpFoundation/Test/Constraint/RequestAttributeValueSame.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\HttpFoundation\Test\Constraint;
 
 use PHPUnit\Framework\Constraint\Constraint;
+use Symfony\Component\HttpFoundation\Request;
 
 final class RequestAttributeValueSame extends Constraint
 {

src/Symfony/Component/HttpFoundation/Test/Constraint/ResponseHasCookie.php

@@ -64,7 +64,7 @@ final class ResponseHasCookie extends Constraint
         return 'the Response '.$this->toString();
     }
 
-    protected function getCookie(Response $response): ?Cookie
+    private function getCookie(Response $response): ?Cookie
     {
         $cookies = $response->headers->getCookies();
 

src/Symfony/Component/HttpFoundation/Tests/RequestTest.php

@@ -1803,7 +1803,7 @@ class RequestTest extends TestCase
         $property->setValue(false);
     }
 
-    private function getRequestInstanceForClientIpTests($remoteAddr, $httpForwardedFor, $trustedProxies)
+    private function getRequestInstanceForClientIpTests(string $remoteAddr, ?string $httpForwardedFor, ?array $trustedProxies): Request
     {
         $request = new Request();
 
@@ -1821,7 +1821,7 @@ class RequestTest extends TestCase
         return $request;
     }
 
-    private function getRequestInstanceForClientIpsForwardedTests($remoteAddr, $httpForwarded, $trustedProxies)
+    private function getRequestInstanceForClientIpsForwardedTests(string $remoteAddr, ?string $httpForwarded, ?array $trustedProxies): Request
     {
         $request = new Request();
 

src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php

@@ -299,7 +299,7 @@ class ResponseHeaderBagTest extends TestCase
         $this->assertTrue($bag->has('Date'));
     }
 
-    private function assertSetCookieHeader($expected, ResponseHeaderBag $actual)
+    private function assertSetCookieHeader(string $expected, ResponseHeaderBag $actual)
     {
         $this->assertRegExp('#^Set-Cookie:\s+'.preg_quote($expected, '#').'$#m', str_replace("\r\n", "\n", (string) $actual));
     }

src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MongoDbSessionHandlerTest.php

@@ -197,7 +197,7 @@ class MongoDbSessionHandlerTest extends TestCase
         $this->assertInstanceOf(\MongoDB\Client::class, $method->invoke($this->storage));
     }
 
-    private function createMongoCollectionMock()
+    private function createMongoCollectionMock(): \MongoDB\Collection
     {
         $collection = $this->getMockBuilder(\MongoDB\Collection::class)
             ->disableOriginalConstructor()

src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php

@@ -346,6 +346,9 @@ class PdoSessionHandlerTest extends TestCase
         yield ['mssql://localhost:56/test', 'sqlsrv:server=localhost,56;Database=test'];
     }
 
+    /**
+     * @return resource
+     */
     private function createStream($content)
     {
         $stream = tmpfile();
@@ -362,7 +365,7 @@ class MockPdo extends \PDO
     private $driverName;
     private $errorMode;
 
-    public function __construct($driverName = null, $errorMode = null)
+    public function __construct(string $driverName = null, int $errorMode = null)
     {
         $this->driverName = $driverName;
         $this->errorMode = null !== $errorMode ?: \PDO::ERRMODE_EXCEPTION;

src/Symfony/Component/HttpFoundation/Tests/Session/Storage/MockFileSessionStorageTest.php

@@ -114,7 +114,7 @@ class MockFileSessionStorageTest extends TestCase
         $storage1->save();
     }
 
-    private function getStorage()
+    private function getStorage(): MockFileSessionStorage
     {
         $storage = new MockFileSessionStorage($this->sessionDir);
         $storage->registerBag(new FlashBag());