classes/phing/tasks/system/AdhocTask.php
protected function execute()
    {
        $classes = get_declared_classes();
        eval($this->script);
        $this->newClasses = array_diff(get_declared_classes(), $classes);
    }
protected function execute()
    {
        $classes = get_declared_classes();
        eval($this->script);
        $this->newClasses = array_diff(get_declared_classes(), $classes);
    }
protected function execute ( ) { $ classes = get_declared_classes ( ) ; eval ( $ this -> script ) ; $ this -> newClasses = array_diff ( get_declared_classes ( ) , $ classes ) ; }
Load the adhoc class, and perform any core validation.

@return string         The classname of the ProjectComponent class.
@throws BuildException - if more than one class is defined.
Load the adhoc class and perform any core validation .