1 files changed, 49 insertions, 0 deletions
diff --git a/vendor/league/commonmark/src/Extension/Footnote/Renderer/FootnoteBackrefRenderer.php b/vendor/league/commonmark/src/Extension/Footnote/Renderer/FootnoteBackrefRenderer.php
new file mode 100644
index 0000000000..1bbf68943d
--- /dev/null
+++ b/vendor/league/commonmark/src/Extension/Footnote/Renderer/FootnoteBackrefRenderer.php
@@ -0,0 +1,49 @@
+<?php
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ * (c) Rezo Zero / Ambroise Maupate
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\CommonMark\Extension\Footnote\Renderer;
+
+use League\CommonMark\ElementRendererInterface;
+use League\CommonMark\Extension\Footnote\Node\FootnoteBackref;
+use League\CommonMark\HtmlElement;
+use League\CommonMark\Inline\Element\AbstractInline;
+use League\CommonMark\Inline\Renderer\InlineRendererInterface;
+use League\CommonMark\Util\ConfigurationAwareInterface;
+use League\CommonMark\Util\ConfigurationInterface;
+
+final class FootnoteBackrefRenderer implements InlineRendererInterface, ConfigurationAwareInterface
+{
+    /** @var ConfigurationInterface */
+    private $config;
+
+    public function render(AbstractInline $inline, ElementRendererInterface $htmlRenderer)
+    {
+        if (!($inline instanceof FootnoteBackref)) {
+            throw new \InvalidArgumentException('Incompatible inline type: ' . \get_class($inline));
+        }
+
+        $attrs = $inline->getData('attributes', []);
+        $attrs['class'] = $attrs['class'] ?? $this->config->get('footnote/backref_class', 'footnote-backref');
+        $attrs['rev'] = 'footnote';
+        $attrs['href'] = \mb_strtolower($inline->getReference()->getDestination());
+        $attrs['role'] = 'doc-backlink';
+
+        return '&nbsp;' . new HtmlElement('a', $attrs, '&#8617;', true);
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration)
+    {
+        $this->config = $configuration;
+    }
+}