How to add custom twig tag?

Question

Twig

Good day.
How to add custom twig tag?
There are standard {{ - }} and {% - %}, but is it possible to add your own, like {dev - dev}?
Or how to do the following:
There is a tag, for example - {{ dev.XXX }} - instead of XXX - methods of a certain php class that return some data.
You can add each one separately, but in a bastard :) Is
it possible somehow automatically? So that all class methods are accessible by such an appeal

Answer 1

https : //symfony.com/doc/current/templating/global_... it is
for symfony, but the essence is the same

namespace App\Service;

class TwigGlobals
{
    public function getInfo()
    {
        return [
            'var_one' => 1,
            'var_two' => 2,
        ];
    }
}

test.html.twig

{% block a %}

    {{ getMainInfo().var_one }}

{% endblock %}