TransNode example

return new FilterExpression(
            new ConstantExpression($message, 0),
            new ConstantExpression('trans', 0),
            new Node($arguments),
            0
        );
    }

    public static function getTransTag($message, $domain = null)
    {
        return new TransNode(
            new BodyNode([], ['data' => $message]),
            $domain ? new ConstantExpression($domain, 0) : null
        );
    }

    public static function getTransDefaultDomainTag($domain)
    {
        return new TransDefaultDomainNode(
            new ConstantExpression($domain, 0)
        );
    }
}

// {% trans %}message{% endtrans %}         $stream->expect(Token::BLOCK_END_TYPE);
        $body = $this->parser->subparse($this->decideTransFork(...), true);

        if (!$body instanceof TextNode && !$body instanceof AbstractExpression) {
            throw new SyntaxError('A message inside a trans tag must be a simple text.', $body->getTemplateLine(), $stream->getSourceContext());
        }

        $stream->expect(Token::BLOCK_END_TYPE);

        return new TransNode($body, $domain, $count, $vars, $locale, $lineno, $this->getTag());
    }

    public function decideTransFork(Token $token): bool
    {
        return $token->test(['endtrans']);
    }

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

use Twig\Node\TextNode;

/** * @author Asmir Mustafic <goetas@gmail.com> */
class TransNodeTest extends TestCase
{
    public function testCompileStrict()
    {
        $body = new TextNode('trans %var%', 0);
        $vars = new NameExpression('foo', 0);
        $node = new TransNode($body, null, null, $vars);

        $env = new Environment($this->createMock(LoaderInterface::class), ['strict_variables' => true]);
        $compiler = new Compiler($env);

        $this->assertEquals(
            sprintf(
                'echo $this->env->getExtension(\'Symfony\Bridge\Twig\Extension\TranslationExtension\')->trans("trans %%var%%", array_merge(["%%var%%" => %s], %s), "messages");',
                $this->getVariableGetterWithoutStrictCheck('var'),
                $this->getVariableGetterWithStrictCheck('foo')
            ),
            trim($compiler->compile($node)->getSource())
        );