Support PHP5.x migration

This change ensures that projects created in PHP 5.x will work as they do in the latest PHP 8.3.

Add CacheModule and version check in AppInjector

The current commit introduces the CacheModule and inserts it in the AppInjector module's installation process. In addition, a function named 'checkVersion' has been created to ensure the existence of 'Doctrine\Common\Cache\FilesystemCache', failing which an exception is triggered. The check is performed during the AppInjector’s construction. This ensures that a doctrine cache ^1.0 is always present for the functioning of AppInjector.

composer-require-checker.json

@@ -4,6 +4,6 @@
     "static", "self", "parent",
     "array", "string", "int", "float", "bool", "iterable", "callable", "void", "object", "mixed",
     "Composer\\Autoload\\ClassLoader", "Doctrine\\Common\\Cache\\FilesystemCache", "Doctrine\\Common\\Cache\\PhpFileCache",
-    "BEAR\\Resource\\ReverseLinkInterface"
+    "BEAR\\Resource\\ReverseLinkInterface", "Doctrine\\Common\\Cache\\ArrayCache"
   ]
 }

src-deprecated/AppInjector.php

@@ -6,13 +6,15 @@
 
 use BEAR\AppMeta\AbstractAppMeta;
 use BEAR\AppMeta\Meta;
+use BEAR\Package\Module\CacheModule;
 use Doctrine\Common\Cache\FilesystemCache;
 use Ray\Compiler\ScriptInjector;
 use Ray\Di\AbstractModule;
 use Ray\Di\Bind;
 use Ray\Di\Injector;
 use Ray\Di\InjectorInterface;
 use Ray\Di\Name;
+use RuntimeException;
 
 /**
  * @deprecated
@@ -58,6 +60,7 @@ final class AppInjector implements InjectorInterface
 
     public function __construct(string $name, string $context, AbstractAppMeta $appMeta = null, string $cacheNamespace = null)
     {
+        $this->checkVersion();
         $this->context = $context;
         $this->appMeta = $appMeta instanceof AbstractAppMeta ? $appMeta : new Meta($name, $context);
         $this->cacheNamespace = (string) $cacheNamespace;
@@ -133,6 +136,7 @@ private function getModule() : AbstractModule
             return $this->module;
         }
         $module = (new Module)($this->appMeta, $this->context);
+        $module->install(new CacheModule());
         /* @var AbstractModule $module */
         $container = $module->getContainer();
         (new Bind($container, InjectorInterface::class))->toInstance($this->injector);
@@ -141,4 +145,11 @@ private function getModule() : AbstractModule
 
         return $module;
     }
+
+    private function checkVersion(): void
+    {
+        if (! class_exists('Doctrine\Common\Cache\FilesystemCache')) {
+            throw new RuntimeException('Doctrine cache ^1.0 is required for AppInjector. Please install doctrine/cache ^1.0');
+        }
+    }
 }

src-deprecated/Module/CacheModule.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BEAR\Package\Module;
+
+use Doctrine\Common\Cache\ArrayCache;
+use Doctrine\Common\Cache\Cache;
+use Ray\Di\AbstractModule;
+use function interface_exists;
+
+/**
+ * @deprecated
+ */
+class CacheModule extends AbstractModule
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure(): void
+    {
+        if (interface_exists(Cache::class)) {
+            $this->bind(Cache::class)->to(ArrayCache::class);
+        }
+    }
+}