1 <?php

     2 

     3 /*

     4  * This file is part of Twig.

     5  *

     6  * (c) 2009 Fabien Potencier

     7  * (c) 2009 Armin Ronacher

     8  *

     9  * For the full copyright and license information, please view the LICENSE

    10  * file that was distributed with this source code.

    11  */

    12 class Twig_Node_Expression_Name extends Twig_Node_Expression

    13 {

    14     public function __construct($name, $lineno)

    15     {

    16         parent::__construct(array(), array('name' => $name, 'output' => false), $lineno);

    17     }

    18 

    19     public function compile(Twig_Compiler $compiler)

    20     {

    21         static $specialVars = array(

    22             '_self'    => '$this',

    23             '_context' => '$context',

    24             '_charset' => '$this->env->getCharset()',

    25         );

    26 

    27         $name = $this->getAttribute('name');

    28 

    29         if ($this->hasAttribute('is_defined_test')) {

    30             if (isset($specialVars[$name])) {

    31                 $compiler->repr(true);

    32             } else {

    33                 $compiler->raw('array_key_exists(')->repr($name)->raw(', $context)');

    34             }

    35         } elseif (isset($specialVars[$name])) {

    36             $compiler->raw($specialVars[$name]);

    37         } elseif ($this->getAttribute('output')) {

    38             $compiler

    39                 ->addDebugInfo($this)

    40                 ->write('if (isset($context[')

    41                 ->string($name)

    42                 ->raw("])) {\n")

    43                 ->indent()

    44                 ->write('echo $context[')

    45                 ->string($name)

    46                 ->raw("];\n")

    47                 ->outdent()

    48                 ->write("}\n")

    49             ;

    50         } else {

    51             $compiler

    52                 ->raw('$this->getContext($context, ')

    53                 ->string($name)

    54                 ->raw(')')

    55             ;

    56         }

    57     }

    58 }