Twig_Node_Expression_Test_Null Class Reference

Checks that a variable is null. More...

Inheritance diagram for Twig_Node_Expression_Test_Null:

Collaboration diagram for Twig_Node_Expression_Test_Null:

Public Member Functions
	compile (Twig_Compiler $compiler)
	Compiles the node to PHP. More...
Public Member Functions inherited from Twig_Node_Expression_Test
	__construct (Twig_NodeInterface $node, $name, Twig_NodeInterface $arguments=null, $lineno)
	compile (Twig_Compiler $compiler)
	Compiles the node to PHP. More...
Public Member Functions inherited from Twig_Node
	__construct (array $nodes=array(), array $attributes=array(), $lineno=0, $tag=null)
	Constructor. More...
	__toString ()
	toXml ($asDom=false)
	compile (Twig_Compiler $compiler)
	Compiles the node to PHP. More...
	getTemplateLine ()
	getLine ()
	getNodeTag ()
	hasAttribute ($name)
	getAttribute ($name)
	setAttribute ($name, $value)
	removeAttribute ($name)
	hasNode ($name)
	getNode ($name)
	setNode ($name, $node=null)
	removeNode ($name)
	count ()
	getIterator ()
	setTemplateName ($name)
	getTemplateName ()
	setFilename ($name)
	getFilename ()

Additional Inherited Members
Protected Member Functions inherited from Twig_Node_Expression_Call
	compileCallable (Twig_Compiler $compiler)
	compileArguments (Twig_Compiler $compiler)
	getArguments ($callable, $arguments)
	normalizeName ($name)
Protected Attributes inherited from Twig_Node
	$nodes
	$attributes
	$lineno
	$tag

Detailed Description

Checks that a variable is null.

 {{ var is none }}

Author

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

Definition at line 21 of file Null.php.

Member Function Documentation

compile()

Twig_Node_Expression_Test_Null::compile

(

Twig_Compiler

$compiler

)

Compiles the node to PHP.

Implements Twig_NodeInterface.

Definition at line 23 of file Null.php.

References Twig_Node\getNode(), and Twig_Compiler\raw().

    {
        $compiler
            ->raw('(null === ')
            ->subcompile($this->getNode('node'))
            ->raw(')')
        ;
    }

Here is the call graph for this function:

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

• libs/composer/vendor/twig/twig/lib/Twig/Node/Expression/Test/Null.php