implement code parser

src/Entity/Code.php

@@ -1,23 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Yggverse\Gemtext\Entity;
-
-class Code
-{
-    /*
-     * Helper method
-     *
-     * Detect line given is escaped by previous iteration
-     */
-    public static function escaped(string $line, bool &$status): bool
-    {
-        if (preg_match('/^```/m', $line))
-        {
-            $status = !($status); // toggle
-        }
-
-        return $status;
-    }
-}

src/Parser/Line/Code.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yggverse\Gemtext\Parser\Line;
+
+class Code
+{
+    public static function match(
+        \Yggverse\Gemtext\Entity\Line $line,
+        array &$matches = [],
+         bool &$inline  = false
+    ): bool
+    {
+        // Multiple format resolver
+        // https://geminiprotocol.net/docs/gemtext.gmi#preformatted-text
+        switch (true)
+        {
+            // Inline ^```preformatted```
+            case preg_match(
+                '/^[`]{3}\s*((?<code>[^`]+))?[`]{3}$/m',
+                $line->getData(),
+                $matches
+            ):
+                // Toggle escaped status
+                return $inline = true;
+
+            // Multiline with optional alt support
+            case preg_match(
+                '/^[`]{3}\s*(?<alt>[^`]+)$/m',
+                $line->getData(),
+                $matches
+            ):
+                return true;
+        }
+
+        return false;
+    }
+}