/**
* @param NodeInterface $root
*/
function __construct(NodeInterface $root)
{
// First, evaluate everything that is not an ObjectAccessorNode, ArrayNode
// or ViewHelperNode so we get all text, numbers, comparators and
// groupers from the text parts of the expression. All other nodes
// we leave intact for later processing
if ($root instanceof RootNode) {
$this->stack = $root->getChildNodes();
} else {
$this->stack = array($root);
}
}
/**
* @param NodeInterface $node
* @return array
* @see convert()
*/
public function convertListOfSubNodes(NodeInterface $node)
{
switch (count($node->getChildNodes())) {
case 0:
return array('initialization' => '', 'execution' => 'NULL');
case 1:
return $this->convert(current($node->getChildNodes()));
default:
$outputVariableName = $this->variableName('output');
$initializationPhpCode = sprintf('%s = \'\';', $outputVariableName) . chr(10);
foreach ($node->getChildNodes() as $childNode) {
$converted = $this->convert($childNode);
$initializationPhpCode .= $converted['initialization'] . chr(10);
$initializationPhpCode .= sprintf('%s .= %s;', $outputVariableName, $converted['execution']) . chr(10);
}
return array('initialization' => $initializationPhpCode, 'execution' => $outputVariableName);
}
}
