<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Json
* @subpackage Expr
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/

/**
* Class for Zend_Json encode method.
*
* This class simply holds a string with a native Javascript Expression,
* so objects | arrays to be encoded with Zend_Json can contain native
* Javascript Expressions.
*
* Example:
* <code>
* $foo = array(
* 'integer' =>9,
* 'string' =>'test string',
* 'function' => Zend_Json_Expr(
* 'function(){ window.alert("javascript function encoded by Zend_Json") }'
* ),
* );
*
* Zend_Json::encode($foo, false, array('enableJsonExprFinder' => true));
* // it will returns json encoded string:
* // {"integer":9,"string":"test string","function":function(){window.alert("javascript function encoded by Zend_Json")}}
* </code>
*
* @category Zend
* @package Zend_Json
* @subpackage Expr
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Json_Expr
{
/**
* Storage for javascript expression.
*
* @var string
*/
protected $_expression;

/**
* Constructor
*
* @param string $expression the expression to hold.
* @return void
*/
public function __construct($expression)
{
$this->_expression = (string) $expression;
}

/**
* Cast to string
*
* @return string holded javascript expression.
*/
public function __toString()
{
return $this->_expression;
}
}