first commit

bundles/KupShop/FeedGeneratorBundle/DependencyInjection/Compiler/ContextPropertiesPass.php

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+<?php
+
+namespace KupShop\FeedGeneratorBundle\DependencyInjection\Compiler;
+
+use KupShop\FeedGeneratorBundle\ContextPropertiesLocator;
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * Check out https://symfony.com/doc/current/service_container/tags.html.
+ */
+class ContextPropertiesPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container)
+    {
+        // always first check if the primary service is defined
+        if (!$container->has(ContextPropertiesLocator::class)) {
+            return;
+        }
+
+        $definition = $container->findDefinition(ContextPropertiesLocator::class);
+
+        // find all service IDs with the kupshop.feed.expression.functions tag
+        $taggedServices = $container->findTaggedServiceIds('kupshop.feed.context.property');
+
+        foreach ($taggedServices as $id => $tags) {
+            $class = $container->findDefinition($id)->getClass();
+            $definition->addMethodCall('addContextProperty', [
+                $id,
+                $class::getName(),
+            ]);
+        }
+
+        $definition->addMethodCall('sortContexts');
+    }
+}