/**
* Called before child nodes are visited.
*
* @param IfwPsn_Vendor_Twig_NodeInterface $node The node to visit
* @param IfwPsn_Vendor_Twig_Environment $env The Twig environment instance
*
* @return IfwPsn_Vendor_Twig_NodeInterface The modified node
*/
public function enterNode(IfwPsn_Vendor_Twig_NodeInterface $node, IfwPsn_Vendor_Twig_Environment $env)
{
if ($node instanceof IfwPsn_Vendor_Twig_Node_Module) {
$this->inAModule = true;
$this->tags = array();
$this->filters = array();
$this->functions = array();
return $node;
} elseif ($this->inAModule) {
// look for tags
if ($node->getNodeTag()) {
$this->tags[] = $node->getNodeTag();
}
// look for filters
if ($node instanceof IfwPsn_Vendor_Twig_Node_Expression_Filter) {
$this->filters[] = $node->getNode('filter')->getAttribute('value');
}
// look for functions
if ($node instanceof IfwPsn_Vendor_Twig_Node_Expression_Function) {
$this->functions[] = $node->getAttribute('name');
}
// wrap print to check __toString() calls
if ($node instanceof IfwPsn_Vendor_Twig_Node_Print) {
return new IfwPsn_Vendor_Twig_Node_SandboxedPrint($node->getNode('expr'), $node->getLine(), $node->getNodeTag());
}
}
return $node;
}
/**
* Called before child nodes are visited.
*
* @param IfwPsn_Vendor_Twig_NodeInterface $node The node to visit
* @param IfwPsn_Vendor_Twig_Environment $env The Twig environment instance
*
* @return IfwPsn_Vendor_Twig_NodeInterface The modified node
*/
public function enterNode(IfwPsn_Vendor_Twig_NodeInterface $node, IfwPsn_Vendor_Twig_Environment $env)
{
if ($node instanceof IfwPsn_Vendor_Twig_Node_Module) {
if ($env->hasExtension('escaper') && ($defaultStrategy = $env->getExtension('escaper')->getDefaultStrategy($node->getAttribute('filename')))) {
$this->defaultStrategy = $defaultStrategy;
}
$this->safeVars = array();
} elseif ($node instanceof IfwPsn_Vendor_Twig_Node_AutoEscape) {
$this->statusStack[] = $node->getAttribute('value');
} elseif ($node instanceof IfwPsn_Vendor_Twig_Node_Block) {
$this->statusStack[] = isset($this->blocks[$node->getAttribute('name')]) ? $this->blocks[$node->getAttribute('name')] : $this->needEscaping($env);
} elseif ($node instanceof IfwPsn_Vendor_Twig_Node_Import) {
$this->safeVars[] = $node->getNode('var')->getAttribute('name');
}
return $node;
}
protected function checkLoopUsageBody(IfwPsn_Vendor_Twig_TokenStream $stream, IfwPsn_Vendor_Twig_NodeInterface $node)
{
if ($node instanceof IfwPsn_Vendor_Twig_Node_Expression_GetAttr && $node->getNode('node') instanceof IfwPsn_Vendor_Twig_Node_Expression_Name && 'loop' == $node->getNode('node')->getAttribute('name')) {
$attribute = $node->getNode('attribute');
if ($attribute instanceof IfwPsn_Vendor_Twig_Node_Expression_Constant && in_array($attribute->getAttribute('value'), array('length', 'revindex0', 'revindex', 'last'))) {
throw new IfwPsn_Vendor_Twig_Error_Syntax(sprintf('The "loop.%s" variable is not defined when looping with a condition', $attribute->getAttribute('value')), $node->getLine(), $stream->getFilename());
}
}
// should check for parent.loop.XXX usage
if ($node instanceof IfwPsn_Vendor_Twig_Node_For) {
return;
}
foreach ($node as $n) {
if (!$n) {
continue;
}
$this->checkLoopUsageBody($stream, $n);
}
}
/**
* Removes "raw" filters.
*
* @param IfwPsn_Vendor_Twig_NodeInterface $node A Node
* @param IfwPsn_Vendor_Twig_Environment $env The current Twig environment
*/
protected function optimizeRawFilter(IfwPsn_Vendor_Twig_NodeInterface $node, IfwPsn_Vendor_Twig_Environment $env)
{
if ($node instanceof IfwPsn_Vendor_Twig_Node_Expression_Filter && 'raw' == $node->getNode('filter')->getAttribute('value')) {
return $node->getNode('node');
}
return $node;
}
