gistfile1.php

<?php

return function ($bh) {
    $bh->match('breadcrumbs', function ($ctx, $json) {
        if (!$ctx->param('data')) {
            return;
        }
        foreach ($json->data as $item) {
            $mod = isset($item['active']) ? true : false;
            if (isset($item['url'])) {
                $content[] =[
                    [
                        'elem' => 'item',
                        'tag' => 'li',
                        'attrs' => ['itemprop' => 'itemListElement', 'itemscope' => true, 'itemtype' => 'http://schema.org/ListItem'],
                        'content' => [
                            [
                                'block' => 'link',
                                'url' => $item['url'],
                                'mods' => [ 'theme' => 'vr', 'active' => $mod ],
                                'attrs' => [ 'itemprop' => 'item'],
                                'content' => [
                                    [
                                        'elem' => 'name',
                                        'tag' => 'span',
                                        'attrs' => [ 'itemprop' => 'name'],
                                        'content' => $item['name']
                                    ],
                                    [
                                        'block' => 'icon',
                                        'mods' => ['font' => true, 'type' => 'angle-right'],
                                    ],
                                ],
                            ]
                        ]
                    ]
                ];
            } else {
                $content[] = [
                    'elem' => 'title',
                    'tag' => 'span',
                    'content' => isset($item['name']) ? $item['name'] : null,
                ];
            }
        }

        $ctx->attrs(['itemscope' => true, 'itemtype' => 'http://schema.org/BreadcrumbList'])
            ->tag('ul')
            ->content($content);
    });
};