node visitorを使う

app/config/eccube/packages/twig.yaml

@@ -20,5 +20,5 @@ twig:
     #     - 'Form/form_div_layout.twig'
     date:
       timezone: '%timezone%'
-    base_template_class: 'Eccube\Twig\Template'
+#    base_template_class: 'Eccube\Twig\Template'
     exception_controller: null

src/Eccube/Twig/Extension/TemplateEventExtension.php

@@ -0,0 +1,76 @@
+<?php
+
+namespace Eccube\Twig\Extension;
+
+use Twig\Compiler;
+use Twig\Environment;
+use Twig\Extension\AbstractExtension;
+use Twig\Node\ModuleNode;
+use Twig\Node\Node;
+use Twig\NodeVisitor\NodeVisitorInterface;
+
+class TemplateEventExtension extends AbstractExtension
+{
+    public function getNodeVisitors()
+    {
+        return [new TemplateEventNodeVisiror()];
+    }
+}
+
+class TemplateEventNodeVisiror implements NodeVisitorInterface
+{
+    public function enterNode(Node $node, Environment $env): Node
+    {
+        return $node;
+    }
+
+    public function leaveNode(Node $node, Environment $env): Node
+    {
+        if ($node instanceof ModuleNode) {
+            if (\str_starts_with($node->getTemplateName(), '__string_template__')) {
+                return $node;
+            }
+            $node->setNode('display_start', new Node([new TemplateEventNode(), $node->getNode('display_start')]));
+        }
+
+        return $node;
+    }
+
+    public function getPriority()
+    {
+        return 0;
+    }
+}
+
+class TemplateEventNode extends Node
+{
+    public function compile(Compiler $compiler)
+    {
+        $compiler
+            ->write('$__eccube__gblobal = $this->env->getGlobals();')
+            ->raw("\n")
+            ->write('$__eccube__eventDispatcher = $__eccube__gblobal[\'event_dispatcher\'];')
+            ->raw("\n")
+            ->write('$__eccube__source = $this->env->getLoader()->getSourceContext($this->getTemplateName())->getCode();')
+            ->raw("\n")
+            ->write('$__eccube__event = new \\Eccube\\Event\\TemplateEvent($this->getTemplateName(), $__eccube__source, $context);')
+            ->raw("\n")
+            ->write('$__eccube__eventDispatcher->dispatch($__eccube__event, $this->getTemplateName());')
+            ->raw("\n")
+            ->write('$context = $__eccube__event->getParameters();')
+            ->raw("\n")
+            ->write('if ($__eccube__event->getSource() !== $__eccube__source) {')
+            ->indent()
+                ->raw("\n")
+                ->write('$__eccube__newTemplate = $this->env->createTemplate($__eccube__event->getSource());')
+                ->raw("\n")
+                ->write('$__eccube__newTemplate->display($__eccube__event->getParameters());')
+                ->raw("\n")
+                ->write('return;')
+                ->raw("\n")
+            ->outdent()
+            ->write('}')
+            ->raw("\n\n")
+        ;
+    }
+}