/**
* Constructor. Parses the syntax tree node and fills $this->leftSide, $this->rightSide,
* $this->comparator and $this->syntaxTreeNode.
*
* @param \TYPO3\Fluid\Core\Parser\SyntaxTree\AbstractNode $syntaxTreeNode
* @throws \TYPO3\Fluid\Core\Parser\Exception
*/
public function __construct(\TYPO3\Fluid\Core\Parser\SyntaxTree\AbstractNode $syntaxTreeNode)
{
$childNodes = $syntaxTreeNode->getChildNodes();
if (count($childNodes) > 3) {
throw new \TYPO3\Fluid\Core\Parser\Exception('A boolean expression has more than tree parts.', 1244201848);
} elseif (count($childNodes) === 0) {
// In this case, we do not have child nodes; i.e. the current SyntaxTreeNode
// is a text node with a literal comparison like "1 == 1"
$childNodes = array($syntaxTreeNode);
}
$this->leftSide = new \TYPO3\Fluid\Core\Parser\SyntaxTree\RootNode();
$this->rightSide = new \TYPO3\Fluid\Core\Parser\SyntaxTree\RootNode();
$this->comparator = NULL;
foreach ($childNodes as $childNode) {
if ($childNode instanceof \TYPO3\Fluid\Core\Parser\SyntaxTree\TextNode && !preg_match(str_replace('COMPARATORS', implode('|', self::$comparators), self::$booleanExpressionTextNodeCheckerRegularExpression), $childNode->getText())) {
// $childNode is text node, and no comparator found.
$this->comparator = NULL;
// skip loop and fall back to classical to boolean conversion.
break;
}
if ($this->comparator !== NULL) {
// comparator already set, we are evaluating the right side of the comparator
$this->rightSide->addChildNode($childNode);
} elseif ($childNode instanceof \TYPO3\Fluid\Core\Parser\SyntaxTree\TextNode && ($this->comparator = $this->getComparatorFromString($childNode->getText()))) {
// comparator in current string segment
$explodedString = explode($this->comparator, $childNode->getText());
if (isset($explodedString[0]) && trim($explodedString[0]) !== '') {
$value = trim($explodedString[0]);
if (is_numeric($value)) {
$this->leftSide->addChildNode(new \TYPO3\Fluid\Core\Parser\SyntaxTree\NumericNode($value));
} else {
$this->leftSide->addChildNode(new \TYPO3\Fluid\Core\Parser\SyntaxTree\TextNode(preg_replace('/(^[\'"]|[\'"]$)/', '', $value)));
}
}
if (isset($explodedString[1]) && trim($explodedString[1]) !== '') {
$value = trim($explodedString[1]);
if (is_numeric($value)) {
$this->rightSide->addChildNode(new \TYPO3\Fluid\Core\Parser\SyntaxTree\NumericNode($value));
} else {
$this->rightSide->addChildNode(new \TYPO3\Fluid\Core\Parser\SyntaxTree\TextNode(preg_replace('/(^[\'"]|[\'"]$)/', '', $value)));
}
}
} else {
// comparator not found yet, on the left side of the comparator
$this->leftSide->addChildNode($childNode);
}
}
if ($this->comparator === NULL) {
// No Comparator found, we need to evaluate the given syntax tree node manually
$this->syntaxTreeNode = $syntaxTreeNode;
}
}
