1 files changed, 58 insertions, 0 deletions
diff --git a/vendor/league/commonmark/src/Extension/Footnote/Parser/FootnoteRefParser.php b/vendor/league/commonmark/src/Extension/Footnote/Parser/FootnoteRefParser.php
new file mode 100644
index 0000000000..496124e7ca
--- /dev/null
+++ b/vendor/league/commonmark/src/Extension/Footnote/Parser/FootnoteRefParser.php
@@ -0,0 +1,58 @@
+<?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\Parser;
+
+use League\CommonMark\Extension\Footnote\Node\FootnoteRef;
+use League\CommonMark\Inline\Parser\InlineParserInterface;
+use League\CommonMark\InlineParserContext;
+use League\CommonMark\Reference\Reference;
+
+final class FootnoteRefParser implements InlineParserInterface
+{
+    public function getCharacters(): array
+    {
+        return ['['];
+    }
+
+    public function parse(InlineParserContext $inlineContext): bool
+    {
+        $container = $inlineContext->getContainer();
+        $cursor = $inlineContext->getCursor();
+        $nextChar = $cursor->peek();
+        if ($nextChar !== '^') {
+            return false;
+        }
+
+        $state = $cursor->saveState();
+
+        $m = $cursor->match('#\[\^([^\]]+)\]#');
+        if ($m !== null) {
+            if (\preg_match('#\[\^([^\]]+)\]#', $m, $matches) > 0) {
+                $container->appendChild(new FootnoteRef($this->createReference($matches[1])));
+
+                return true;
+            }
+        }
+
+        $cursor->restoreState($state);
+
+        return false;
+    }
+
+    private function createReference(string $label): Reference
+    {
+        return new Reference($label, '#fn:' . $label, $label);
+    }
+}