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<?php |
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/** |
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* |
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* This file is part of Aura for PHP. |
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* |
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* @license http://opensource.org/licenses/bsd-license.php BSD |
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* |
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*/ |
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namespace Aura\Router\Rule; |
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use Aura\Router\Exception; |
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use Iterator; |
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/** |
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* |
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* Collection of rules to iterate through. |
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* |
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* @package Aura.Router |
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* |
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*/ |
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class RuleIterator implements Iterator |
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{ |
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/** |
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* |
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* The rules to iterate through. |
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* @var array |
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*/ |
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protected $rules = []; |
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/** |
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* |
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* Constructor. |
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* @param array $rules The rules to iterate through. |
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* |
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*/ |
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public function __construct(array $rules = []) |
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{ |
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$this->set($rules); |
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} |
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/** |
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* |
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* Sets the rules to iterate through. |
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* @param array $rules The rules to iterate through. |
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* |
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*/ |
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public function set(array $rules) |
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{ |
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$this->rules = []; |
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foreach ($rules as $rule) { |
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$this->append($rule); |
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} |
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} |
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/** |
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* |
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* Appends a rule to iterate through. |
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* |
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* @param callable $rule The rule to iterate through. |
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* |
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*/ |
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public function append(callable $rule) |
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{ |
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$this->rules[] = $rule; |
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} |
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/** |
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* |
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* Prepends a rule to iterate through. |
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* |
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* @param callable $rule The rule to iterate through. |
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* |
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*/ |
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public function prepend(callable $rule) |
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{ |
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array_unshift($this->rules, $rule); |
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} |
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/** |
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* |
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* Iterator: gets the current rule. |
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* |
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* @return RuleInterface |
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* |
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*/ |
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public function current() |
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{ |
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$rule = current($this->rules); |
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if ($rule instanceof RuleInterface) { |
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return $rule; |
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} |
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$key = key($this->rules); |
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$factory = $this->rules[$key]; |
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$rule = $factory(); |
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if ($rule instanceof RuleInterface) { |
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$this->rules[$key] = $rule; |
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return $rule; |
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} |
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$message = gettype($rule); |
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$message .= ($message != 'object') ?: ' of type ' . get_class($rule); |
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$message = "Expected RuleInterface, got {$message} for key {$key}"; |
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throw new Exception\UnexpectedValue($message); |
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} |
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/** |
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* |
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* Iterator: gets the current rule key. |
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* |
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* @return mixed |
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* |
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*/ |
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public function key() |
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{ |
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return key($this->rules); |
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} |
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/** |
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* |
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* Iterator: moves the iterator forward to the next rule. |
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* |
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* @return null |
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* |
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*/ |
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public function next() |
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{ |
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next($this->rules); |
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} |
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/** |
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* |
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* Iterator: rewinds to the first rule. |
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* |
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* @return null |
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* |
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*/ |
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public function rewind() |
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{ |
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reset($this->rules); |
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} |
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/** |
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* |
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* Iterator: is the current position valid? |
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* |
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* @return bool |
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* |
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*/ |
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public function valid() |
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{ |
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return current($this->rules) !== false; |
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} |
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} |
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auraphp /
Aura.Router
