Twig_NodeVisitor_Sandbox Class Reference

Twig_NodeVisitor_Sandbox implements sandboxing. More...

Inheritance diagram for Twig_NodeVisitor_Sandbox:

Collaboration diagram for Twig_NodeVisitor_Sandbox:

Public Member Functions
	getPriority ()
	Returns the priority for this visitor. More...
Public Member Functions inherited from Twig_BaseNodeVisitor
	enterNode (Twig_NodeInterface $node, Twig_Environment $env)
	Called before child nodes are visited. More...
	leaveNode (Twig_NodeInterface $node, Twig_Environment $env)
	Called after child nodes are visited. More...
	enterNode (Twig_NodeInterface $node, Twig_Environment $env)
	Called before child nodes are visited. More...
	leaveNode (Twig_NodeInterface $node, Twig_Environment $env)
	Called after child nodes are visited. More...
	getPriority ()
	Returns the priority for this visitor. More...

Protected Member Functions
	doEnterNode (Twig_Node $node, Twig_Environment $env)
	Called before child nodes are visited. More...
	doLeaveNode (Twig_Node $node, Twig_Environment $env)
	Called after child nodes are visited. More...
	doEnterNode (Twig_Node $node, Twig_Environment $env)
	Called before child nodes are visited. More...
	doLeaveNode (Twig_Node $node, Twig_Environment $env)
	Called after child nodes are visited. More...

Protected Attributes
	$inAModule = false
	$tags
	$filters
	$functions

Detailed Description

Twig_NodeVisitor_Sandbox implements sandboxing.

@final

Author

Fabien Potencier fabie.nosp@m.n@sy.nosp@m.mfony.nosp@m..com

Definition at line 19 of file Sandbox.php.

Member Function Documentation

doEnterNode()

Twig_NodeVisitor_Sandbox::doEnterNode ( Twig_Node  $node, Twig_Environment  $env  )

protected

Called before child nodes are visited.

Returns

Twig_Node The modified node

Reimplemented from Twig_BaseNodeVisitor.

Definition at line 26 of file Sandbox.php.

    {
        if ($node instanceof Twig_Node_Module) {
            $this->inAModule = true;
            $this->tags = array();
            $this->filters = array();
            $this->functions = array();
 
            return $node;
        } elseif ($this->inAModule) {
            // look for tags
            if ($node->getNodeTag() && !isset($this->tags[$node->getNodeTag()])) {
                $this->tags[$node->getNodeTag()] = $node;
            }
 
            // look for filters
            if ($node instanceof Twig_Node_Expression_Filter && !isset($this->filters[$node->getNode('filter')->getAttribute('value')])) {
                $this->filters[$node->getNode('filter')->getAttribute('value')] = $node;
            }
 
            // look for functions
            if ($node instanceof Twig_Node_Expression_Function && !isset($this->functions[$node->getAttribute('name')])) {
                $this->functions[$node->getAttribute('name')] = $node;
            }
 
            // the .. operator is equivalent to the range() function
            if ($node instanceof Twig_Node_Expression_Binary_Range && !isset($this->functions['range'])) {
                $this->functions['range'] = $node;
            }
 
            // wrap print to check __toString() calls
            if ($node instanceof Twig_Node_Print) {
                return new Twig_Node_SandboxedPrint($node->getNode('expr'), $node->getTemplateLine(), $node->getNodeTag());
            }
        }
 
        return $node;
    }

References Twig_Node\getAttribute(), Twig_Node\getNode(), Twig_Node\getNodeTag(), and Twig_Node\getTemplateLine().

Here is the call graph for this function:

doLeaveNode()

Twig_NodeVisitor_Sandbox::doLeaveNode ( Twig_Node  $node, Twig_Environment  $env  )

protected

Called after child nodes are visited.

Returns

Twig_Node|false The modified node or false if the node must be removed

Reimplemented from Twig_BaseNodeVisitor.

Definition at line 65 of file Sandbox.php.

    {
        if ($node instanceof Twig_Node_Module) {
            $this->inAModule = false;
 
            $node->setNode('display_start', new Twig_Node(array(new Twig_Node_CheckSecurity($this->filters, $this->tags, $this->functions), $node->getNode('display_start'))));
        }
 
        return $node;
    }

References Twig_Node\getNode(), and Twig_Node\setNode().

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getPriority()

Twig_NodeVisitor_Sandbox::getPriority

(

)

Returns the priority for this visitor.

Priority should be between -10 and 10 (0 is the default).

Returns

int The priority level

Implements Twig_NodeVisitorInterface.

Definition at line 76 of file Sandbox.php.

    {
        return 0;
    }

Field Documentation

$filters

Twig_NodeVisitor_Sandbox::$filters

protected

Definition at line 23 of file Sandbox.php.

$functions

Twig_NodeVisitor_Sandbox::$functions

protected

Definition at line 24 of file Sandbox.php.

$inAModule

Twig_NodeVisitor_Sandbox::$inAModule = false

protected

Definition at line 21 of file Sandbox.php.

$tags

Twig_NodeVisitor_Sandbox::$tags

protected

Definition at line 22 of file Sandbox.php.

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The documentation for this class was generated from the following file:

• libs/composer/vendor/twig/twig/lib/Twig/NodeVisitor/Sandbox.php