<?php
namespace eMacros\Runtime\Builder;
use eMacros\Applicable;
use eMacros\Scope;
use eMacros\GenericList;
class InstanceBuilder implements Applicable {
/**
* Creates a new instance from a string
* Usage: (instance _class (array 1 2 3))
* Returns: object
* (non-PHPdoc)
* @see \eMacros\Applicable::apply()
*/
public function apply(Scope $scope, GenericList $arguments) {
if (count($arguments) == 0) {
throw new \BadFunctionCallException("InstanceBuilder: No arguments found.");
}
$class = $arguments[0]->evaluate($scope);
if (!is_string($class)) {
throw new \InvalidArgumentException(sprintf("InstanceBuilder: Expected string as first argument but %s was found instead.", gettype($class)));
}
//get additional arguments
$list = array_slice($arguments->getArrayCopy(), 1);
$args = array();
//build constructor parameters
foreach ($list as $el) {
$args[] = $el->evaluate($scope);
}
$rc = new \ReflectionClass($class);
return empty($args) ? $rc->newInstance() : $rc->newInstanceArgs($args);
}
}
?>
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