/**
* @throws InvalidContextException
* @throws InvalidRuleException
* @throws InvalidCallbackException
*/
private function validate()
{
if (!$this->context->valid()) {
throw new InvalidContextException('Context must be an array with string keys and values.');
}
if (!$this->rules->valid()) {
throw new InvalidRuleException('Rule must be a string or an array of strings.');
}
if (!$this->evaluator->valid($this->rules, $this->context)) {
throw new InvalidRuleException('Rules aren\'t semantically valid (' . implode(',', $this->interpret()) . ').');
}
if ($this->successCallback !== null && !is_callable($this->successCallback)) {
throw new InvalidCallbackException('Success callback must be callable.');
}
if ($this->failCallback !== null && !is_callable($this->failCallback)) {
throw new InvalidCallbackException('Fail callback must be callable.');
}
}
/**
* @param RuleCollection $rules
* @param Context $context
* @return string[]
*/
private function build($rules, $context)
{
return array_map(function ($rule) use($context) {
return $this->prepare($rule, $context);
}, $rules->get());
}
