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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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namespace Doctrine\DBAL\Platforms\Keywords;
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use function array_flip;
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use function array_map;
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use function strtoupper;
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/**
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 * Abstract interface for a SQL reserved keyword dictionary.
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 *
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 * @psalm-consistent-constructor
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 */
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abstract class KeywordList
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{
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    /** @var string[]|null */
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    private ?array $keywords = null;
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    /**
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     * Checks if the given word is a keyword of this dialect/vendor platform.
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     *
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     * @param string $word
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     *
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     * @return bool
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     */
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    public function isKeyword($word)
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    {
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        if ($this->keywords === null) {
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            $this->initializeKeywords();
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        }
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        return isset($this->keywords[strtoupper($word)]);
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    }
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    /** @return void */
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    protected function initializeKeywords()
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    {
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        $this->keywords = array_flip(array_map('strtoupper', $this->getKeywords()));
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    }
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    /**
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     * Returns the list of keywords.
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     *
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     * @return string[]
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     */
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    abstract protected function getKeywords();
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    /**
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     * Returns the name of this keyword list.
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     *
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     * @deprecated
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     *
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     * @return string
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     */
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    abstract public function getName();
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}