GitFOSS

(function (Prism) {

	/**
	 * If the given language is present, it will insert the given doc comment grammar token into it.
	 *
	 * @param {string} lang
	 * @param {any} docComment
	 */
	function insertDocComment(lang, docComment) {
		if (Prism.languages[lang]) {
			Prism.languages.insertBefore(lang, 'comment', {
				'doc-comment': docComment
			});
		}
	}

	var tag = Prism.languages.markup.tag;

	var slashDocComment = {
		pattern: /\/\/\/.*/,
		greedy: true,
		alias: 'comment',
		inside: {
			'tag': tag
		}
	};
	var tickDocComment = {
		pattern: /'''.*/,
		greedy: true,
		alias: 'comment',
		inside: {
			'tag': tag
		}
	};

	insertDocComment('csharp', slashDocComment);
	insertDocComment('fsharp', slashDocComment);
	insertDocComment('vbnet', tickDocComment);

}(Prism));