WithPrefix.php
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WithPrefix.php
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	<?php
	declare(strict_types=1);

	namespace Keruald\Cache\Features;

	use InvalidArgumentException;

	trait WithPrefix {

	///
	/// Properties
	///

	private string $prefix = "";

	///
	/// Getters and setters
	///

	public function getPrefix () : string {
	if ($this->prefix === "") {
	throw new InvalidArgumentException("This cache doesn't use prefix");
	}

	return $this->prefix;
	}

	protected function getUnsafePrefix () : string {
	return $this->prefix;
	}

	public function hasPrefix () : bool {
	return $this->prefix !== "";
	}

	/**
	* Allows to share ab instance with several applications
	* by prefixing the keys.
	*
	* @throws InvalidArgumentException
	*/
	public function setPrefix (string $prefix) : self {
	if ($prefix === "") {
	throw new InvalidArgumentException("Prefix must be a non-empty string");
	}

	$this->prefix = $prefix;

	return $this;
	}

	public function clearPrefix () : self {
	$this->prefix = "";

	return $this;
	}

	}