Add #[YieldReady] to allow extensions to tell when they're ready for yielding

src/Node/BlockReferenceNode.php

@@ -12,6 +12,7 @@
 
 namespace Twig\Node;
 
+use Twig\Attribute\YieldReady;
 use Twig\Compiler;
 
 /**
@@ -19,6 +20,7 @@ use Twig\Compiler;
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
+#[YieldReady]
 class BlockReferenceNode extends Node implements NodeOutputInterface
 {
     public function __construct(string $name, int $lineno, ?string $tag = null)
@@ -28,16 +30,9 @@ class BlockReferenceNode extends Node implements NodeOutputInterface
 
     public function compile(Compiler $compiler): void
     {
-        if ($compiler->getEnvironment()->useYield()) {
-            $compiler
-                ->addDebugInfo($this)
-                ->write(sprintf("yield from \$this->unwrap()->yieldBlock('%s', \$context, \$blocks);\n", $this->getAttribute('name')))
-            ;
-        } else {
-            $compiler
-                ->addDebugInfo($this)
-                ->write(sprintf("\$this->displayBlock('%s', \$context, \$blocks);\n", $this->getAttribute('name')))
-            ;
-        }
+        $compiler
+            ->addDebugInfo($this)
+            ->write(sprintf("yield from \$this->unwrap()->yieldBlock('%s', \$context, \$blocks);\n", $this->getAttribute('name')))
+        ;
     }
 }