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

	namespace Keruald\OmniTools\Collections;

	use TypeError;

	class WeightedValue implements Comparable {

	///
	/// Constants
	///

	const DEFAULT_WEIGHT = 1.0;

	///
	/// Private members
	///

	/**
	* @var float
	*/
	private $weight = self::DEFAULT_WEIGHT;

	/**
	* @var mixed
	*/
	private $value;

	///
	/// Constructors
	///

	public function __construct ($value, float $weight = self::DEFAULT_WEIGHT) {
	$this->value = $value;
	$this->weight = $weight;
	}

	public static function parse (string $expression) : WeightedValue {
	$pair = explode(';q=', $expression);

	if (count($pair) == 1) {
	return new WeightedValue($pair[0]);
	}

	return new WeightedValue($pair[0], (float)$pair[1]);
	}

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

	public function getWeight () : float {
	return $this->weight;
	}

	public function setWeight (float $weight) : self {
	$this->weight = $weight;

	return $this;
	}

	public function getValue () {
	return $this->value;
	}

	public function setValue ($value) : self {
	$this->value = $value;

	return $this;
	}

	///
	/// Helper methods
	///

	public function compareTo (object $other) : int {
	if (!$other instanceof WeightedValue) {
	throw new TypeError;
	}

	return $this->getWeight() <=> $other->getWeight();
	}

	}