private function SassNumber::coercionFactor in Sassy 7

Same name and namespace in other branches

1. 7.3 phpsass/script/literals/SassNumber.php \SassNumber::coercionFactor()

* Calculates the corecion factor to apply to the value *

Parameters

array units being converted from: * @param array units being converted to * @return float the coercion factor to apply

1 call to SassNumber::coercionFactor()

SassNumber::coerce in phamlp/sass/script/literals/SassNumber.php

* Returns the value of this number converted to other units. * The conversion takes into account the relationship between e.g. mm and cm, * as well as between e.g. in and cm. * * If this number is unitless, it will simply return itself with…

File

phamlp/sass/script/literals/SassNumber.php, line 329

Class

SassNumber

SassNumber class. Provides operations and type testing for Sass numbers. Units are of the passed value are converted the those of the class value if it has units. e.g. 2cm + 20mm = 4cm while 2 + 20mm =…

Code

private function coercionFactor($fromUnits, $toUnits) {
  $units = $this
    ->removeCommonUnits($fromUnits, $toUnits);
  $fromUnits = $units[0];
  $toUnits = $units[1];
  if (sizeof($fromUnits) !== sizeof($toUnits) || !$this
    ->areConvertable(array_merge($fromUnits, $toUnits))) {
    throw new SassNumberException("Incompatible units: '{from}' and '{to}'", array(
      '{from}' => join(' * ', $fromUnits),
      '{to}' => join(' * ', $toUnits),
    ), SassScriptParser::$context->node);
  }
  $coercionFactor = 1;
  foreach ($fromUnits as $i => $from) {
    if (array_key_exists($from) && array_key_exists($from)) {
      $coercionFactor *= self::$unitConversion[$toUnits[$i]] / self::$unitConversion[$from];
    }
    else {
      throw new SassNumberException("Incompatible units: '{from}' and '{to}", array(
        '{from}' => join(' * ', $fromUnits),
        '{to}' => join(' * ', $toUnits),
      ), SassScriptParser::$context->node);
    }
  }
  return $coercionFactor;
}