Compability with Symfony 4.x

composer.json

@@ -14,7 +14,8 @@
         }
     ],
     "autoload": {
-        "psr-4": {"ProklUng\\ContainerBoilerplate\\": "src" }
+        "psr-4": {"ProklUng\\ContainerBoilerplate\\": "src" },
+        "files": ["functions/helpers.php"]
     },
     "autoload-dev": {
         "psr-4": {"ProklUng\\ContainerBoilerplate\\Tests\\": "tests" }

functions/helpers.php

@@ -0,0 +1,52 @@
+<?php
+
+// Compability with Symfony 4.x
+use Symfony\Component\DependencyInjection\Argument\AbstractArgument;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Loader\Configurator\EnvConfigurator;
+use Symfony\Component\DependencyInjection\Loader\Configurator\InlineServiceConfigurator;
+use Symfony\Component\DependencyInjection\Loader\Configurator\ReferenceConfigurator;
+
+if (!function_exists('service')) {
+    /**
+     * Creates a reference to a service.
+     *
+     * @param string $serviceId Service ID.
+     *
+     * @return ReferenceConfigurator
+     */
+    function service(string $serviceId): ReferenceConfigurator
+    {
+        return new ReferenceConfigurator($serviceId);
+    }
+}
+
+if (!function_exists('inline_service')) {
+    /**
+     * Creates an inline service.
+     */
+    function inline_service(string $class = null): InlineServiceConfigurator
+    {
+        return new InlineServiceConfigurator(new Definition($class));
+    }
+}
+
+if (!function_exists('abstract_arg')) {
+    /**
+     * Creates an abstract argument.
+     */
+    function abstract_arg(string $description): AbstractArgument
+    {
+        return new AbstractArgument($description);
+    }
+}
+
+if (!function_exists('env')) {
+    /**
+     * Creates an environment variable reference.
+     */
+    function env(string $name): EnvConfigurator
+    {
+        return new EnvConfigurator($name);
+    }
+}