52 lines
988 B
PHP
52 lines
988 B
PHP
<?php
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declare(strict_types=1);
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namespace Phpml\FeatureExtraction;
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use Phpml\Exception\InvalidArgumentException;
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class StopWords
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{
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/**
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* @var array
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*/
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protected $stopWords;
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/**
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* @param array $stopWords
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*/
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public function __construct(array $stopWords)
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{
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$this->stopWords = array_fill_keys($stopWords, true);
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}
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/**
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* @param string $token
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*
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* @return bool
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*/
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public function isStopWord(string $token): bool
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{
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return isset($this->stopWords[$token]);
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}
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/**
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* @param string $language
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*
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* @return StopWords
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*
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* @throws InvalidArgumentException
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*/
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public static function factory($language = 'English'): StopWords
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{
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$className = __NAMESPACE__."\\StopWords\\$language";
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if (!class_exists($className)) {
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throw InvalidArgumentException::invalidStopWordsLanguage($language);
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}
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return new $className();
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}
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}
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