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<?php /** * SCSSPHP * * @copyright 2012-2017 Leaf Corcoran * * @license http://opensource.org/licenses/MIT MIT * * @link http://leafo.github.io/scssphp */ namespace Leafo\ScssPhp; use Leafo\ScssPhp\Base\Range; use Leafo\ScssPhp\Exception\RangeException; /** * Utilties * * @author Anthon Pang <anthon.pang@gmail.com> */ class Util { /** * Asserts that `value` falls within `range` (inclusive), leaving * room for slight floating-point errors. * * @param string $name The name of the value. Used in the error message. * @param Range $range Range of values. * @param array $value The value to check. * @param string $unit The unit of the value. Used in error reporting. * * @return mixed `value` adjusted to fall within range, if it was outside by a floating-point margin. * * @throws \Leafo\ScssPhp\Exception\RangeException */ public static function checkRange($name, Range $range, $value, $unit = '') { $val = $value[1]; $grace = new Range(-0.00001, 0.00001); if ($range->includes($val)) { return $val; } if ($grace->includes($val - $range->first)) { return $range->first; } if ($grace->includes($val - $range->last)) { return $range->last; } throw new RangeException("$name {$val} must be between {$range->first} and {$range->last}$unit"); } }
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