- Added a new DiExtension and proceed to some code cleaning

src/Extension/DiExtension.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Picea\Extension;
+
+use Picea\Compiler\Context;
+use Psr\Container\ContainerInterface;
+
+class DiExtension implements Extension, FunctionExtension {
+
+    public array $token = [ "di:has", "di:get" ];
+
+    public function __construct(public readonly ContainerInterface $container) {}
+
+    public function parse(\Picea\Compiler\Context &$context, ?string $arguments, string $token, array $options = []) : string
+    {
+        if ( $token === 'di:has' ) {
+            return "<?php echo \$picea->compiler->getExtensionFromToken('$token')->container->has($arguments) ?>";
+        }
+
+        if ( $token === 'di:get' ) {
+            return "<?php echo \$picea->compiler->getExtensionFromToken('$token')->container->get($arguments) ?>";
+        }
+
+        throw new \InvalidArgumentException("You must use has() or get() method.");
+    }
+
+    public function exportFunctions(): array
+    {
+        return [
+            'di_get' => function(string $classname) {
+                return $this->container->get($classname);
+            },
+
+            'di_has' => function(string $classname) {
+                return $this->container->has($classname);
+            },
+        ];
+    }
+}