First Commit

vendor/php-ai/php-ml/src/FeatureExtraction/StopWords.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Phpml\FeatureExtraction;
+
+use Phpml\Exception\InvalidArgumentException;
+
+class StopWords
+{
+    /**
+     * @var array
+     */
+    protected $stopWords = [];
+
+    public function __construct(array $stopWords)
+    {
+        $this->stopWords = array_fill_keys($stopWords, true);
+    }
+
+    public function isStopWord(string $token): bool
+    {
+        return isset($this->stopWords[$token]);
+    }
+
+    public static function factory(string $language = 'English'): self
+    {
+        $className = __NAMESPACE__."\\StopWords\\${language}";
+
+        if (!class_exists($className)) {
+            throw new InvalidArgumentException(sprintf('Can\'t find "%s" language for StopWords', $language));
+        }
+
+        return new $className();
+    }
+}