yield used when use_yield = false about twig HOT 7 OPEN

<?php

require_once __DIR__.'/vendor/autoload.php';

use Twig\Compiler;
use Twig\Environment;
use Twig\Extension\AbstractExtension;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Node;
use Twig\Node\PrintNode;
use Twig\Token;
use Twig\TokenParser\AbstractTokenParser;

error_reporting(-1);

class EchoNode extends Node
{
    public function compile(Compiler $compiler): void
    {
        $compiler
            ->addDebugInfo($this)
            ->write("ob_start();\n")
            ->subcompile($this->getNode('content1'))
            ->write('echo "\n";', "\n")
            ->write("echo 'foo';\n")
            ->write('echo "\n";', "\n")
            ->subcompile($this->getNode('content2'))
            ->write('echo "\n";', "\n")
            ->write("echo ob_get_clean();\n")
        ;
    }
}

class EchoTokenParser extends AbstractTokenParser
{
    public function parse(Token $token): Node
    {
        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        return new EchoNode([
            'content1' => new PrintNode(new ConstantExpression('content1', -1), -1),
            'content2' => new PrintNode(new ConstantExpression('content2', -1), -1),
        ]);
    }

    public function getTag(): string
    {
        return 'echo';
    }
}

class EchoExtension extends AbstractExtension
{
    public function getTokenParsers(): array
    {
        return [
            new EchoTokenParser(),
        ];
    }
}

$twig = new Environment(new Twig\Loader\ArrayLoader(['_bug.twig' => "HERE\n{% echo %}\nHERE"]), [
    'strict_variables' => true,
    'debug' => true,
    'cache' => false,
    'autoescape' => false,
    'use_yield' => false,
]);
$twig->addExtension(new EchoExtension());

$template = '_bug.twig';
echo $twig->parse($twig->tokenize(new Twig\Source($twig->getLoader()->getSourceContext($template)->getCode(), $template)))."\n\n";
echo $twig->compile($twig->parse($twig->tokenize(new Twig\Source($twig->getLoader()->getSourceContext($template)->getCode(), $template))))."\n\n";

$template = $twig->load($template);
echo $template->render([]);

// line 87
ob_start();
// line 90
yield "    ";
…

use Twig\Token;
use Twig\TokenParser\AbstractTokenParser;

class TagTokenParser extends AbstractTokenParser
{
    public function getTag(): string
    {
        return 'tag';
    }

    public function parse(Token $token): TagNode
    {
        $lineno = $token->getLine();
        $expressionParser = $this->parser->getExpressionParser();
        $stream = $this->parser->getStream();

        $nodes = [
            'name' => $expressionParser->parseExpression(),
        ];

        $stream->expect(Token::BLOCK_END_TYPE);
        $nodes['content'] = $this->parser->subparse(function(Token $token) {
            return $token->test('endtag');
        }, true);
        $stream->expect(Token::BLOCK_END_TYPE);

        return new TagNode($nodes, [], $lineno, $this->getTag());
    }
}

use Twig\Compiler;
use Twig\Node\Node;

class TagNode extends Node
{
    public function compile(Compiler $compiler): void
    {
        $compiler
            ->addDebugInfo($this)
            ->write("ob_start();\n")
            ->subcompile($this->getNode('content'))
            ->write("\$content = ob_get_clean();\n")
            ->write("echo '<' . ")
            ->subcompile($this->getNode('name'))
            ->raw(" . '>';\n")
            ->write("echo \$content;\n")
            ->write("echo '</' . ")
            ->subcompile($this->getNode('name'))
            ->raw(" . '>';\n");
    }
}

protected function doDisplay(array $context, array $blocks = [])
{
    $macros = $this->macros;
    // line 6
    echo twig_call_macro($macros["_self"], "macro_button", [], 6, $context, $this->getSourceContext());
    echo "
";
}

// line 1
public function macro_button(...$__varargs__)
{
    $macros = $this->macros;
    $context = $this->env->mergeGlobals([
        "varargs" => $__varargs__,
    ]);

    $blocks = [];

    ob_start();
    try {
        // line 2
        echo "  ";
        ob_start();
        // line 3
        echo "    Button Label
";
        $content = ob_get_clean();
        echo '<' . "button" . '>';
        echo $content;
        echo '</' . "button" . '>';

        return ('' === $tmp = ob_get_contents()) ? '' : new Markup($tmp, $this->env->getCharset());
    } finally {
        ob_end_clean();
    }
}

protected function doDisplay(array $context, array $blocks = [])
{
    $macros = $this->macros;
    // line 6
    yield CoreExtension::callMacro($macros["_self"], "macro_button", [], 6, $context, $this->getSourceContext());
    yield "
";
    return; yield '';
}

// line 1
public function macro_button(...$__varargs__)
{
    $macros = $this->macros;
    $context = $this->env->mergeGlobals([
        "varargs" => $__varargs__,
    ]);

    $blocks = [];

    return ('' === $tmp = \Twig\Extension\CoreExtension::captureOutput((function () use (&$context, $macros, $blocks) {
        // line 2
        yield "  ";
        ob_start();
        // line 3
        yield "    Button Label
";
        $content = ob_get_clean();
        echo '<' . "button" . '>';
        echo $content;
        echo '</' . "button" . '>';
        return; yield '';
    })())) ? '' : new Markup($tmp, $this->env->getCharset());
}