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hasNode example

public function compile(Compiler $compiler): void
    {
        $compiler
            ->addDebugInfo($this)
            ->write("\$context['_parent'] = \$context;\n")
            ->write("\$context['_seq'] = twig_ensure_traversable(")
            ->subcompile($this->getNode('seq'))
            ->raw(");\n")
        ;

        if ($this->hasNode('else')) {
            $compiler->write("\$context['_iterated'] = false;\n");
        }

        if ($this->getAttribute('with_loop')) {
            $compiler
                ->write("\$context['loop'] = [\n")
                ->write(" 'parent' => \$context['_parent'],\n")
                ->write(" 'index0' => 0,\n")
                ->write(" 'index' => 1,\n")
                ->write(" 'first' => true,\n")
                ->write("];\n")

use Twig\Node\NodeOutputInterface;

#[Package('core')] class ReturnNode extends Node implements NodeOutputInterface
{
    public function compile(Compiler $compiler): void
    {
        $compiler
            ->addDebugInfo($this)
            ->write('return ');

        if ($this->hasNode('expr')) {
            $compiler->subcompile($this->getNode('expr'));
            $compiler->raw(";\n");

            return;
        }

        $compiler->raw(";\n");
    }
}

$nodes['locale'] = $locale;
        }

        parent::__construct($nodes, [], $lineno, $tag);
    }

    public function compile(Compiler $compiler): void
    {
        $compiler->addDebugInfo($this);

        $defaults = new ArrayExpression([], -1);
        if ($this->hasNode('vars') && ($vars = $this->getNode('vars')) instanceof ArrayExpression) {
            $defaults = $this->getNode('vars');
            $vars = null;
        }
        [$msg, $defaults] = $this->compileString($this->getNode('body'), $defaults, (bool) $vars);

        $compiler
            ->write('echo $this->env->getExtension(\'Symfony\Bridge\Twig\Extension\TranslationExtension\')->trans(')
            ->subcompile($msg)
        ;

        $compiler->raw(', ');

do {
                if ($this->analyzingPass) {
                    $analyzedContainer->setDefinitions(array_intersect_key($analyzedContainer->getDefinitions(), $this->connectedIds));
                    $this->analyzingPass->process($analyzedContainer);
                }
                $this->graph = $analyzedContainer->getCompiler()->getServiceReferenceGraph();
                $notInlinedIds = $this->notInlinedIds;
                $notInlinableIds += $this->notInlinableIds;
                $this->connectedIds = $this->notInlinedIds = $this->inlinedIds = $this->notInlinableIds = [];

                foreach ($analyzedContainer->getDefinitions() as $id => $definition) {
                    if (!$this->graph->hasNode($id)) {
                        continue;
                    }
                    foreach ($this->graph->getNode($id)->getOutEdges() as $edge) {
                        if (isset($notInlinedIds[$edge->getSourceNode()->getId()])) {
                            $this->currentId = $id;
                            $this->processValue($definition, true);
                            break;
                        }
                    }
                }

$this->addLoopToCurrent();
        }

        // include without the only attribute         elseif ($node instanceof IncludeNode && !$node->getAttribute('only')) {
            $this->addLoopToAll();
        }

        // include function without the with_context=false parameter         elseif ($node instanceof FunctionExpression
            && 'include' === $node->getAttribute('name')
            && (!$node->getNode('arguments')->hasNode('with_context')
                 || false !== $node->getNode('arguments')->getNode('with_context')->getAttribute('value')
               )
        ) {
            $this->addLoopToAll();
        }

        // the loop variable is referenced via an attribute         elseif ($node instanceof GetAttrExpression
            && (!$node->getNode('attribute') instanceof ConstantExpression
                || 'parent' === $node->getNode('attribute')->getAttribute('value')
               )

->subcompile($this->getNode('expr'))
            ->raw(', ')
            ->repr($this->getTemplateName())
            ->raw(', ')
            ->repr($this->getTemplateLine())
            ->raw(')')
        ;
    }

    protected function addTemplateArguments(Compiler $compiler)
    {
        if (!$this->hasNode('variables')) {
            $compiler->raw(false === $this->getAttribute('only') ? '$context' : '[]');
        } elseif (false === $this->getAttribute('only')) {
            $compiler
                ->raw('twig_array_merge($context, ')
                ->subcompile($this->getNode('variables'))
                ->raw(')')
            ;
        } else {
            $compiler->raw('twig_to_array(');
            $compiler->subcompile($this->getNode('variables'));
            $compiler->raw(')');
        }

parent::__construct($nodes, [], $lineno, $tag);
        $this->varPrefix = $varPrefix;
    }

    public function compile(Compiler $compiler): void
    {
        $compiler
            ->write("if (\$this->env->isDebug()) {\n")
            ->indent();

        if (!$this->hasNode('values')) {
            // remove embedded templates (macros) from the context             $compiler
                ->write(sprintf('$%svars = [];'."\n", $this->varPrefix))
                ->write(sprintf('foreach ($context as $%1$skey => $%1$sval) {'."\n", $this->varPrefix))
                ->indent()
                ->write(sprintf('if (!$%sval instanceof \Twig\Template) {'."\n", $this->varPrefix))
                ->indent()
                ->write(sprintf('$%1$svars[$%1$skey] = $%1$sval;'."\n", $this->varPrefix))
                ->outdent()
                ->write("}\n")
                ->outdent()

foreach ($locator->getArgument(0) as $k => $v) {
                if ($v->getValues()[0] === $value) {
                    if ($k !== $id) {
                        $currentId = $k.'" in the container provided to "'.$currentId;
                    }
                    throw new ServiceNotFoundException($id, $currentId, null, $this->getAlternatives($id));
                }
            }
        }

        if ('.' === $currentId[0] && $graph->hasNode($currentId)) {
            foreach ($graph->getNode($currentId)->getInEdges() as $edge) {
                if (!$edge->getValue() instanceof Reference || ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE < $edge->getValue()->getInvalidBehavior()) {
                    continue;
                }
                $sourceId = $edge->getSourceNode()->getId();

                if ('.' !== $sourceId[0]) {
                    $currentId = $sourceId;
                    break;
                }
            }
        }

  /** * {@inheritdoc} */
  public function compile(Compiler $compiler) {
    $compiler->addDebugInfo($this);

    [$singular, $tokens] = $this->compileString($this->getNode('body'));
    $plural = NULL;

    if ($this->hasNode('plural')) {
      [$plural, $pluralTokens] = $this->compileString($this->getNode('plural'));
      $tokens = array_merge($tokens, $pluralTokens);
    }

    // Start writing with the function to be called.     $compiler->write('echo ' . (empty($plural) ? 't' : '\Drupal::translation()->formatPlural') . '(');

    // Move the count to the beginning of the parameters list.     if (!empty($plural)) {
      $compiler->raw('abs(')->subcompile($this->getNode('count'))->raw('), ');
    }

if ($this->getAttribute('ignore_strict_check')) {
            $this->getNode('node')->setAttribute('ignore_strict_check', true);
        }

        $compiler
            ->subcompile($this->getNode('node'))
            ->raw(', ')
            ->subcompile($this->getNode('attribute'))
        ;

        if ($this->hasNode('arguments')) {
            $compiler->raw(', ')->subcompile($this->getNode('arguments'));
        } else {
            $compiler->raw(', []');
        }

        $compiler->raw(', ')
            ->repr($this->getAttribute('type'))
            ->raw(', ')->repr($this->getAttribute('is_defined_test'))
            ->raw(', ')->repr($this->getAttribute('ignore_strict_check'))
            ->raw(', ')->repr($env->hasExtension(SandboxExtension::class))
            ->raw(', ')->repr($this->getNode('node')->getTemplateLine())

$compiler
                    ->write('if (')
                ;
            }

            $compiler
                ->subcompile($this->getNode('tests')->getNode($i))
                ->raw(") {\n")
                ->indent()
            ;
            // The node might not exists if the content is empty             if ($this->getNode('tests')->hasNode($i + 1)) {
                $compiler->subcompile($this->getNode('tests')->getNode($i + 1));
            }
        }

        if ($this->hasNode('else')) {
            $compiler
                ->outdent()
                ->write("} else {\n")
                ->indent()
                ->subcompile($this->getNode('else'))
            ;
        }

$this
                    ->compileTemplateCall($compiler, 'displayBlock')
                    ->raw(";\n");
            } else {
                $this->compileTemplateCall($compiler, 'renderBlock');
            }
        }
    }

    private function compileTemplateCall(Compiler $compiler, string $method): Compiler
    {
        if (!$this->hasNode('template')) {
            $compiler->write('$this');
        } else {
            $compiler
                ->write('$this->loadTemplate(')
                ->subcompile($this->getNode('template'))
                ->raw(', ')
                ->repr($this->getTemplateName())
                ->raw(', ')
                ->repr($this->getTemplateLine())
                ->raw(')')
            ;
        }

return new SetNode(false, new Node([$name]), new Node([$node->getNode('expr')]), $node->getTemplateLine());
            }
        }

        if (!$this->scope->has('domain')) {
            return $node;
        }

        if ($node instanceof FilterExpression && 'trans' === $node->getNode('filter')->getAttribute('value')) {
            $arguments = $node->getNode('arguments');
            if ($this->isNamedArguments($arguments)) {
                if (!$arguments->hasNode('domain') && !$arguments->hasNode(1)) {
                    $arguments->setNode('domain', $this->scope->get('domain'));
                }
            } elseif (!$arguments->hasNode(1)) {
                if (!$arguments->hasNode(0)) {
                    $arguments->setNode(0, new ArrayExpression([], $node->getTemplateLine()));
                }

                $arguments->setNode(1, $this->scope->get('domain'));
            }
        } elseif ($node instanceof TransNode) {
            if (!$node->hasNode('domain')) {