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<?php
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/*
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* This file is part of Twig.
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*
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* (c) 2009 Fabien Potencier
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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/**
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* Twig base exception.
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*
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* @package twig
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class Twig_Error extends Exception
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{
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protected $lineno;
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protected $filename;
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protected $rawMessage;
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protected $previous;
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/**
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* Constructor.
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*
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* @param string $message The error message
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* @param integer $lineno The template line where the error occurred
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* @param string $filename The template file name where the error occurred
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* @param Exception $previous The previous exception
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*/
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public function __construct($message, $lineno = -1, $filename = null, Exception $previous = null)
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{
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if (version_compare(PHP_VERSION, '5.3.0', '<')) {
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$this->previous = $previous;
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parent::__construct('');
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} else {
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parent::__construct('', 0, $previous);
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}
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$this->lineno = $lineno;
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$this->filename = $filename;
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if (-1 === $this->lineno || null === $this->filename) {
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$this->guessTemplateInfo();
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}
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$this->rawMessage = $message;
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$this->updateRepr();
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}
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/**
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* Gets the raw message.
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*
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* @return string The raw message
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*/
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public function getRawMessage()
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{
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return $this->rawMessage;
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}
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/**
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* Gets the filename where the error occurred.
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*
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* @return string The filename
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*/
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public function getTemplateFile()
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{
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return $this->filename;
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}
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/**
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* Sets the filename where the error occurred.
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*
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* @param string $filename The filename
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*/
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public function setTemplateFile($filename)
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{
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$this->filename = $filename;
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$this->updateRepr();
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}
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/**
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* Gets the template line where the error occurred.
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*
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* @return integer The template line
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*/
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public function getTemplateLine()
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{
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return $this->lineno;
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}
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/**
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* Sets the template line where the error occurred.
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*
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* @param integer $lineno The template line
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*/
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public function setTemplateLine($lineno)
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{
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$this->lineno = $lineno;
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$this->updateRepr();
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}
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/**
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* For PHP < 5.3.0, provides access to the getPrevious() method.
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*
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* @param string $method The method name
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* @param array $arguments The parameters to be passed to the method
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*
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* @return Exception The previous exception or null
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*/
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public function __call($method, $arguments)
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{
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if ('getprevious' == strtolower($method)) {
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return $this->previous;
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}
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throw new BadMethodCallException(sprintf('Method "Twig_Error::%s()" does not exist.', $method));
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}
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protected function updateRepr()
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{
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$this->message = $this->rawMessage;
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$dot = false;
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if ('.' === substr($this->message, -1)) {
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$this->message = substr($this->message, 0, -1);
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$dot = true;
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}
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if (null !== $this->filename) {
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if (is_string($this->filename) || (is_object($this->filename) && method_exists($this->filename, '__toString'))) {
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$filename = sprintf('"%s"', $this->filename);
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} else {
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$filename = json_encode($this->filename);
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}
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$this->message .= sprintf(' in %s', $filename);
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}
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if ($this->lineno >= 0) {
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$this->message .= sprintf(' at line %d', $this->lineno);
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}
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if ($dot) {
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$this->message .= '.';
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}
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}
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protected function guessTemplateInfo()
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{
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$template = null;
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foreach (debug_backtrace() as $trace) {
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if (isset($trace['object']) && $trace['object'] instanceof Twig_Template && 'Twig_Template' !== get_class($trace['object'])) {
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$template = $trace['object'];
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// update template filename
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if (null === $this->filename) {
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$this->filename = $template->getTemplateName();
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}
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}
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}
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if (null === $template || $this->lineno > -1) {
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return;
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}
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$r = new ReflectionObject($template);
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$file = $r->getFileName();
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$exceptions = array($e = $this);
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while (method_exists($e, 'getPrevious') && $e = $e->getPrevious()) {
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$exceptions[] = $e;
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}
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while ($e = array_pop($exceptions)) {
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$traces = $e->getTrace();
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while ($trace = array_shift($traces)) {
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if (!isset($trace['file']) || !isset($trace['line']) || $file != $trace['file']) {
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continue;
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}
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foreach ($template->getDebugInfo() as $codeLine => $templateLine) {
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if ($codeLine <= $trace['line']) {
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// update template line
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$this->lineno = $templateLine;
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return;
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}
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}
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}
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}
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}
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}
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