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<?php |
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namespace NatePage\EasyHtmlElement; |
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use NatePage\EasyHtmlElement\Exception\InvalidElementException; |
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class BranchValidator implements BranchValidatorInterface |
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{ |
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/** @var HtmlElementInterface */ |
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private $htmlElement; |
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/** @var array The options to check to valid a branch */ |
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private $checks = array('parent', 'extends', 'children'); |
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public function __construct(HtmlElementInterface $htmlElement) |
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{ |
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$this->htmlElement = $htmlElement; |
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} |
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/** |
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* Valid the current map branch. |
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* |
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* @param string $name The current element name |
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* @param array $circular The array of elements names called in the current branch of map |
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*/ |
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public function validateBranch($name, array $circular = array()) |
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{ |
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$current = $this->htmlElement->getCurrentElement($name); |
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$circular[] = $current['name']; |
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$this->validateClass($current); |
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foreach ($this->checks as $check) { |
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if (isset($current[$check])) { |
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$currentCheck = (array) $current[$check]; |
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$this->validateDefineHimself($current['name'], $currentCheck, $check); |
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foreach ($currentCheck as $cc) { |
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$this->validateCircularReferences($current['name'], $cc, $check, $circular); |
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$this->validateBranch($cc, $circular); |
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} |
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} |
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} |
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} |
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/** |
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* Validate the current element class. |
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* |
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* @param array $current The current element |
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* |
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* @throws InvalidElementException If the current element defines a class which doesn't exist |
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*/ |
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private function validateClass(array $current) |
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{ |
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if (isset($current['class']) && !class_exists($current['class'])) { |
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throw new InvalidElementException(sprintf( |
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'The element "%s" define a class which doesn\'t exist.', |
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$current['name'] |
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)); |
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} |
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} |
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/** |
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* Validate himself references. |
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* |
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* @param string $name The current element name |
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* @param array $currentCheck The current check context |
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* @param string $check The current check name |
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* |
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* @throws InvalidElementException If the current element defines himself as parent, children or extends |
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*/ |
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private function validateDefineHimself($name, array $currentCheck, $check) |
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{ |
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if (in_array($name, $currentCheck)) { |
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throw new InvalidElementException(sprintf( |
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'Element "%s" cannot define himself as %s.', |
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$name, |
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$check |
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)); |
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} |
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} |
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/** |
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* Validate circular references. |
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* |
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* @param string $name The current element name |
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* @param string|array $currentCheck The current check context |
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* @param string $check The current check name |
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* @param array $circular The names of the previous elements called |
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* |
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* @throws InvalidElementException If the current element defines a parent, child or extends which creates circular |
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* reference |
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*/ |
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private function validateCircularReferences($name, $currentCheck, $check, array $circular) |
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{ |
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if (!is_array($currentCheck) && in_array($currentCheck, $circular)) { |
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$circular[] = $currentCheck; |
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throw new InvalidElementException(sprintf( |
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'Element "%s" cannot define "%s" as %s. It\'s a circular reference. [%s]', |
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$name, |
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$currentCheck, |
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$check, |
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implode(' -> ', $circular) |
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)); |
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} |
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} |
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} |
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natepage /
easy-html-element
