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<?php
/**
* PHPTAL templating engine
*
* PHP Version 5
*
* @category HTML
* @package PHPTAL
* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
* @author Kornel Lesiński <kornel@aardvarkmedia.co.uk>
* @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License
* @version SVN: $Id: TalesChainExecutor.php 671 2009-07-11 18:11:35Z kornel $
* @link http://phptal.org/
*/
require_once 'PHPTAL/Php/TalesChainReader.php';
/**
* @package PHPTAL
* @subpackage Php
*/
class PHPTAL_Php_TalesChainExecutor
{
const CHAIN_BREAK = 1;
const CHAIN_CONT = 2;
public function __construct(PHPTAL_Php_CodeWriter $codewriter, array $chain, PHPTAL_Php_TalesChainReader $reader)
{
$this->_chain = $chain;
$this->_chainStarted = false;
$this->codewriter = $codewriter;
$this->_reader = $reader;
$this->_executeChain();
}
public function getCodeWriter()
{
return $this->codewriter;
}
public function doIf($condition)
{
if ($this->_chainStarted == false) {
$this->_chainStarted = true;
$this->codewriter->doIf($condition);
} else {
$this->codewriter->doElseIf($condition);
}
}
public function doElse()
{
if ($this->_chainStarted) {
$this->codewriter->doElse();
}
}
public function breakChain()
{
$this->_state = self::CHAIN_BREAK;
}
public function continueChain()
{
$this->_state = self::CHAIN_CONT;
}
private function _executeChain()
{
$this->codewriter->noThrow(true);
end($this->_chain); $lastkey = key($this->_chain);
foreach ($this->_chain as $key => $exp) {
$this->_state = 0;
if ($exp == PHPTAL_Php_TalesInternal::NOTHING_KEYWORD) {
$this->_reader->talesChainNothingKeyword($this);
if ($this->_state == self::CHAIN_BREAK)
break;
if ($this->_state == self::CHAIN_CONT)
continue;
} elseif ($exp == PHPTAL_Php_TalesInternal::DEFAULT_KEYWORD) {
$this->_reader->talesChainDefaultKeyword($this);
if ($this->_state == self::CHAIN_BREAK)
break;
if ($this->_state == self::CHAIN_CONT)
continue;
} else {
$this->_reader->talesChainPart($this, $exp, $lastkey === $key);
if ($this->_state == self::CHAIN_BREAK)
break;
if ($this->_state == self::CHAIN_CONT)
continue;
}
}
$this->codewriter->doEnd('if');
$this->codewriter->noThrow(false);
}
private $_state = 0;
private $_chain;
private $_chainStarted = false;
private $codewriter = null;
}
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