/**
* Calculate possible wildcards
*/
protected function calculateWildcardCombinations()
{
$wildCards = $this->getConditionWildcards();
if (sizeof($wildCards) > 2) {
throw new \Exception('More than 2 wildcards is not yet supported');
}
$combinations = $this->combinations($this->workingMemory->getAllFacts(), sizeof($wildCards));
foreach ($combinations as $i => $combination) {
$proccesedCondition = $this->parseCode($this->getCondition(), $this->getConditionWildcards(), $combination);
$proccesedAction = $this->parseCode($this->getAction(), $this->getConditionWildcards(), $combination);
$rule = Rule::factory($this->getName() . '__' . $i, $proccesedCondition, $proccesedAction, $this->getPriority());
$this->wildcardCombinationRules[] = $rule;
}
}
/**
* @param Rule $rule
* @param WorkingMemory $workingMemory
*
* @return array
*/
public function execute(Rule $rule, WorkingMemory $workingMemory)
{
$facts = $workingMemory->getAllFacts();
/**
* @param string $_action
* @return array
*/
$executor = function ($_action) use($facts) {
extract($facts);
unset($facts);
eval($_action);
unset($_action);
return get_defined_vars();
};
$workingMemory->setAllFacts($executor($rule->getAction()));
$workingMemory->setExecuted($rule->getRule());
}
/**
* @param Rule $rule
* @param WorkingMemory $workingMemory
*
* @return array
*/
private function execAction(Rule $rule, WorkingMemory $workingMemory)
{
$facts = $workingMemory->getAllFacts();
/**
* @param string $_action
* @return array
*/
$executor = function ($_action) use($facts) {
extract($facts);
unset($facts);
eval($_action);
unset($_action);
return get_defined_vars();
};
$code = trim($rule->getAction());
$code = $code . (preg_match('/;$/i', $code) ? '' : ';');
return $executor($code);
}
