feat: initial version

Signed-off-by: Sebastian Krupinski <root@LAPTOP-7DVOR6NC>

lib/Client/Protocol/Command/Argument/SequenceSet.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Gricob\IMAP\Protocol\Command\Argument;
+
+final class SequenceSet implements Argument
+{
+    /**
+     * @var array<int>
+     */
+    private array $numbers;
+    private ?string $range;
+
+    public function __construct(int ...$numbers)
+    {
+        $this->numbers = $numbers;
+        $this->range = null;
+    }
+
+    public static function range(int $from, int $to): self
+    {
+        $set = new self();
+        $set->range = $from . ':' . $to;
+        return $set;
+    }
+
+    public function __toString(): string
+    {
+        if ($this->range !== null) {
+            return $this->range;
+        }
+
+        return implode(',', $this->numbers);
+    }
+}