perf: Cache snippets

Author: distantnative

src/Cms/App.php

@@ -102,7 +102,8 @@ public function __construct(array $props = [], bool $setInstance = true)
 		$this->core   = new Core($this);
 		$this->events = new Events($this);
 
-		// start with a fresh version cache
+		// start with a fresh snippet and version cache
+		Snippet::$cache = [];
 		VersionCache::reset();
 
 		// register all roots to be able to load stuff afterwards

src/Template/Snippet.php

@@ -23,6 +23,11 @@
  */
 class Snippet extends Tpl
 {
+	/**
+	 * Cache for the snippet files
+	 */
+	final public static array $cache = [];
+
 	/**
 	 * Cache for the currently active
 	 * snippet. This is used to start
@@ -182,18 +187,25 @@ public static function file(string|array $name): string|null
 
 		foreach ($names as $name) {
 			$name = (string)$name;
+
+			// retrieve the file from the cache if it exists
+			if (isset(static::$cache[$name]) === true) {
+				return static::$cache[$name];
+			}
+
 			$file = $root . '/' . $name . '.php';
 
 			if (F::exists($file, $root) === false) {
 				$file = $kirby->extensions('snippets')[$name] ?? null;
 			}
 
 			if ($file) {
-				break;
+				// cache the file for future use
+				return static::$cache[$name] = $file;
 			}
 		}
 
-		return $file;
+		return null;
 	}
 
 	/**