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<?php |
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namespace MewesK\TwigExcelBundle\Twig\NodeVisitor; |
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use MewesK\TwigExcelBundle\Twig\Node\XlsNode; |
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use Twig_BaseNodeVisitor; |
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use Twig_Environment; |
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use Twig_Error_Syntax; |
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use Twig_Node; |
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use Twig_Node_Block; |
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use Twig_Node_Macro; |
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/** |
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* Class SyntaxCheckNodeVisitor |
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* |
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* @package MewesK\TwigExcelBundle\Twig\NodeVisitor |
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*/ |
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class SyntaxCheckNodeVisitor extends Twig_BaseNodeVisitor |
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{ |
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/** |
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* @var array |
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*/ |
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protected $path = []; |
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/** |
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* {@inheritdoc} |
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* |
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* @throws Twig_Error_Syntax |
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*/ |
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protected function doEnterNode(Twig_Node $node, Twig_Environment $env) |
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{ |
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if (($node instanceof Twig_Node_Block || $node instanceof Twig_Node_Macro) && !$node->hasAttribute('twigExcelBundle') && $this->checkContainsXlsNode($node)) { |
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if ($node instanceof Twig_Node_Block) { |
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throw new Twig_Error_Syntax('Block tags do not work together with Twig tags provided by TwigExcelBundle. Please use \'xlsblock\' instead.'); |
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} |
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elseif ($node instanceof Twig_Node_Macro) { |
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throw new Twig_Error_Syntax('Macro tags do not work together with Twig tags provided by TwigExcelBundle. Please use \'xlsmacro\' instead.'); |
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} |
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} |
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elseif ($node instanceof XlsNode) { |
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/** |
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* @var XlsNode $node |
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*/ |
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$this->checkAllowedParents($node, $node->getAllowedParents()); |
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} |
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$this->path[] = get_class($node); |
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return $node; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doLeaveNode(Twig_Node $node, Twig_Environment $env) |
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{ |
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array_pop($this->path); |
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return $node; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getPriority() |
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{ |
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return 0; |
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} |
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// |
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// Helper |
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// |
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/** |
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* @param Twig_Node $node |
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* @param array $allowedParents |
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* |
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* @throws Twig_Error_Syntax |
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*/ |
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protected function checkAllowedParents(Twig_Node $node, array $allowedParents) |
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{ |
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$parentName = null; |
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foreach (array_reverse($this->path) as $className) { |
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if (strpos($className, 'MewesK\TwigExcelBundle\Twig\Node\Xls') === 0) { |
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$parentName = $className; |
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break; |
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} |
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} |
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if ($parentName === null) { |
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return; |
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} |
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foreach ($allowedParents as $className) { |
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if ($className === $parentName) { |
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return; |
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} |
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} |
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// reset path since throwing an error prevents doLeaveNode to be called |
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$this->path = []; |
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throw new Twig_Error_Syntax(sprintf('Node "%s" is not allowed inside of Node "%s".', get_class($node), $parentName)); |
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} |
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/** |
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* @param Twig_Node $node |
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* @return bool |
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*/ |
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private function checkContainsXlsNode(Twig_Node $node) |
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{ |
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foreach ($node->getIterator() as $key => $subNode) { |
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if ($node instanceof XlsNode) { |
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return true; |
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} elseif ($subNode instanceof Twig_Node && $subNode->count() > 0) { |
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if ($this->checkContainsXlsNode($subNode)) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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} |
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MewesK /
TwigExcelBundle
