Twig_NodeVisitor_Optimizer Class Reference

Twig_NodeVisitor_Optimizer tries to optimizes the AST. More...

Inheritance diagram for Twig_NodeVisitor_Optimizer:

Public Member Functions
	__construct ($optimizers=-1)
	Constructor. More...
	enterNode (Twig_NodeInterface $node, Twig_Environment $env)
	{Called before child nodes are visited. Parameters Twig_NodeInterface $node The node to visit Twig_Environment $env The Twig environment instance Returns Twig_NodeInterface The modified node } More...
	leaveNode (Twig_NodeInterface $node, Twig_Environment $env)
	{Called after child nodes are visited. Parameters Twig_NodeInterface $node The node to visit Twig_Environment $env The Twig environment instance Returns Twig_NodeInterface|false The modified node or false if the node must be removed } More...
	getPriority ()
	{Returns the priority for this visitor.Priority should be between -10 and 10 (0 is the default). Returns integer The priority level } More...

Data Fields
const	OPTIMIZE_ALL = -1
const	OPTIMIZE_NONE = 0
const	OPTIMIZE_FOR = 2
const	OPTIMIZE_RAW_FILTER = 4
const	OPTIMIZE_VAR_ACCESS = 8

Protected Member Functions
	optimizeVariables ($node, $env)
	optimizePrintNode ($node, $env)
	Optimizes print nodes. More...
	optimizeRawFilter ($node, $env)
	Removes "raw" filters. More...
	enterOptimizeFor ($node, $env)
	Optimizes "for" tag by removing the "loop" variable creation whenever possible. More...
	leaveOptimizeFor ($node, $env)
	Optimizes "for" tag by removing the "loop" variable creation whenever possible. More...
	addLoopToCurrent ()
	addLoopToAll ()

Protected Attributes
	$loops = array()
	$optimizers
	$prependedNodes = array()
	$inABody = false

Detailed Description

Twig_NodeVisitor_Optimizer tries to optimizes the AST.

This visitor is always the last registered one.

You can configure which optimizations you want to activate via the optimizer mode.

Author

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

Definition at line 22 of file Optimizer.php.

Constructor & Destructor Documentation

__construct

(

$optimizers = -1

)

Constructor.

Parameters

integer

$optimizers

The optimizer mode

Definition at line 40 of file Optimizer.php.

Member Function Documentation

addLoopToAll ( )

protected

Definition at line 232 of file Optimizer.php.

addLoopToCurrent ( )

protected

Definition at line 227 of file Optimizer.php.

enterNode	(	Twig_NodeInterface	$node,
		Twig_Environment	$env
	)

{Called before child nodes are visited.

Parameters

Twig_NodeInterface	$node	The node to visit
Twig_Environment	$env	The Twig environment instance

Returns

Twig_NodeInterface The modified node

}

Implements Twig_NodeVisitorInterface.

Definition at line 52 of file Optimizer.php.

enterOptimizeFor (   $node,   $env  )

protected

Optimizes "for" tag by removing the "loop" variable creation whenever possible.

Parameters

Twig_NodeInterface	$node	A Node
Twig_Environment	$env	The current Twig environment

Definition at line 171 of file Optimizer.php.

getPriority

(

)

{Returns the priority for this visitor.Priority should be between -10 and 10 (0 is the default).

Returns

integer The priority level

}

Implements Twig_NodeVisitorInterface.

Definition at line 242 of file Optimizer.php.

leaveNode	(	Twig_NodeInterface	$node,
		Twig_Environment	$env
	)

{Called after child nodes are visited.

Parameters

Twig_NodeInterface	$node	The node to visit
Twig_Environment	$env	The Twig environment instance

Returns

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

}

Implements Twig_NodeVisitorInterface.

Definition at line 78 of file Optimizer.php.

leaveOptimizeFor (   $node,   $env  )

protected

Optimizes "for" tag by removing the "loop" variable creation whenever possible.

Parameters

Twig_NodeInterface	$node	A Node
Twig_Environment	$env	The current Twig environment

Definition at line 220 of file Optimizer.php.

optimizePrintNode (   $node,   $env  )

protected

Optimizes print nodes.

It replaces:

• "echo $this->render(Parent)Block()" with "$this->display(Parent)Block()"

Parameters

Twig_NodeInterface	$node	A Node
Twig_Environment	$env	The current Twig environment

Definition at line 132 of file Optimizer.php.

optimizeRawFilter (   $node,   $env  )

protected

Removes "raw" filters.

Parameters

Twig_NodeInterface	$node	A Node
Twig_Environment	$env	The current Twig environment

Definition at line 156 of file Optimizer.php.

optimizeVariables (   $node,   $env  )

protected

Definition at line 111 of file Optimizer.php.

Field Documentation

$inABody = false

protected

Definition at line 33 of file Optimizer.php.

$loops = array()

protected

Definition at line 30 of file Optimizer.php.

$optimizers

protected

Definition at line 31 of file Optimizer.php.

$prependedNodes = array()

protected

Definition at line 32 of file Optimizer.php.

const OPTIMIZE_ALL = -1

Definition at line 24 of file Optimizer.php.

const OPTIMIZE_FOR = 2

Definition at line 26 of file Optimizer.php.

const OPTIMIZE_NONE = 0

Definition at line 25 of file Optimizer.php.

const OPTIMIZE_RAW_FILTER = 4

Definition at line 27 of file Optimizer.php.

const OPTIMIZE_VAR_ACCESS = 8

Definition at line 28 of file Optimizer.php.

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

• lib/templateEngines/twig/NodeVisitor/Optimizer.php