MDL-55224 core: Import PHP-CSS-Parser into core

Part of MDL-55071

lib/php-css-parser/Comment/Comment.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Sabberworm\CSS\Comment;
+
+use Sabberworm\CSS\Renderable;
+
+class Comment implements Renderable {
+	protected $iLineNo;
+	protected $sComment;
+
+	public function __construct($sComment = '', $iLineNo = 0) {
+		$this->sComment = $sComment;
+		$this->iLineNo = $iLineNo;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getComment() {
+		return $this->sComment;
+	}
+
+	/**
+	 * @return int
+	 */
+	public function getLineNo() {
+		return $this->iLineNo;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function setComment($sComment) {
+		$this->sComment = $sComment;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function __toString() {
+		return $this->render(new \Sabberworm\CSS\OutputFormat());
+	}
+
+	/**
+	 * @return string
+	 */
+	public function render(\Sabberworm\CSS\OutputFormat $oOutputFormat) {
+		return '/*' . $this->sComment . '*/';
+	}
+
+}