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<?php
namespace Desmond\functions\core;
use Desmond\functions\DesmondFunction;
use Desmond\ArgumentHelper;
use Desmond\exceptions\ArgumentException;
use Desmond\data_types\NumberType;
class Multiply extends DesmondFunction
{
use ArgumentHelper;
public function id()
return '*';
}
public function run(array $args)
if (!isset($args[0])) {
return $this->newReturnType('Number', 0);
$this->expectArguments('*', [0 => ['Number']], $args);
$value = $args[0]->value();
array_shift($args);
foreach ($args as $number) {
if (!$this->isDesmondType('Number', $number)) {
throw new ArgumentException('"*" expects all arguments to be Numbers.');
$value *= $number->value();
return $this->newReturnType('Number', $value);
Archer70 /
desmond
