LanguageTag: $tag is non-empty-string

inteve · Jan 5, 2024 · 3ebee66 · 3ebee66
1 parent 67766d9
commit 3ebee66
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/src/LanguageTag.php b/src/LanguageTag.php
@@ -8,7 +8,7 @@
 
 	class LanguageTag
 	{
-		/** @var string */
+		/** @var non-empty-string */
 		private $tag;
 
 		/** @var array<string, string> */
@@ -26,6 +26,7 @@ public function __construct($tag)
 		{
 			Assert::string($tag);
 			Assert::true((bool) Strings::match($tag, '~^[a-z]{2}\\-[A-Z]{2}\\z~'), 'Invalid language tag.');
+			Assert::true($tag !== '');
 
 			$this->tag = $tag;
 		}
@@ -51,7 +52,7 @@ public function isLang($lang)
 
 
 		/**
-		 * @return string
+		 * @return non-empty-string
 		 */
 		public function getLang()
 		{
@@ -60,7 +61,7 @@ public function getLang()
 
 
 		/**
-		 * @return string
+		 * @return non-empty-string
 		 */
 		public function toString()
 		{