From b8da335336c09fa6814fe0ca0d6d506c357cd7b9 Mon Sep 17 00:00:00 2001
From: Yanick Witschi <yanick.witschi@terminal42.ch>
Date: Fri, 18 Aug 2023 11:24:08 +0200
Subject: [PATCH] Flip tokens only once

---
 src/LanguageDetection/Language.php | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/LanguageDetection/Language.php b/src/LanguageDetection/Language.php
index 00d2720..c369a33 100644
--- a/src/LanguageDetection/Language.php
+++ b/src/LanguageDetection/Language.php
@@ -15,7 +15,7 @@
 class Language extends NgramParser
 {
     /**
-     * @var array
+     * @var array<string, array<string, int>>
      */
     protected $tokens = [];
 
@@ -42,14 +42,19 @@ public function __construct(array $lang = [], string $dirname = '')
         }
 
         $isEmpty = empty($lang);
+        $tokens = [];
 
         foreach (\glob($dirname) as $file)
         {
             if ($isEmpty || \in_array(\basename($file, '.php'), $lang))
             {
-                $this->tokens += require $file;
+                $tokens += require $file;
             }
         }
+
+        foreach ($tokens as $lang => $value) {
+            $this->tokens[$lang] = \array_flip($value);
+        }
     }
 
     /**
@@ -71,7 +76,6 @@ public function detect(string $str): LanguageResult
             foreach ($this->tokens as $lang => $value)
             {
                 $index = $sum = 0;
-                $value = \array_flip($value);
 
                 foreach ($samples as $v)
                 {