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<?php /* * This file is part of Twig. * * (c) Fabien Potencier * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Twig\Error; use Twig\Source; use Twig\Template; /** * Twig base exception. * * This exception class and its children must only be used when * an error occurs during the loading of a template, when a syntax error * is detected in a template, or when rendering a template. Other * errors must use regular PHP exception classes (like when the template * cache directory is not writable for instance). * * To help debugging template issues, this class tracks the original template * name and line where the error occurred. * * Whenever possible, you must set these information (original template name * and line number) yourself by passing them to the constructor. If some or all * these information are not available from where you throw the exception, then * this class will guess them automatically (when the line number is set to -1 * and/or the name is set to null). As this is a costly operation, this * can be disabled by passing false for both the name and the line number * when creating a new instance of this class. * * @author Fabien Potencier <fabien@symfony.com> */ class Error extends \Exception { private $lineno; private $name; private $rawMessage; private $sourcePath; private $sourceCode; /** * Constructor. * * Set the line number to -1 to enable its automatic guessing. * Set the name to null to enable its automatic guessing. * * @param string $message The error message * @param int $lineno The template line where the error occurred * @param Source|string|null $source The source context where the error occurred * @param \Exception $previous The previous exception */ public function __construct(string $message, int $lineno = -1, $source = null, \Exception $previous = null) { parent::__construct('', 0, $previous); if (null === $source) { $name = null; } elseif (!$source instanceof Source && !$source instanceof \Twig_Source) { @trigger_error(sprintf('Passing a string as a source to %s is deprecated since Twig 2.6.1; pass a Twig\Source instance instead.', __CLASS__), E_USER_DEPRECATED); $name = $source; } else { $name = $source->getName(); $this->sourceCode = $source->getCode(); $this->sourcePath = $source->getPath(); } $this->lineno = $lineno; $this->name = $name; $this->rawMessage = $message; $this->updateRepr(); } /** * Gets the raw message. * * @return string The raw message */ public function getRawMessage() { return $this->rawMessage; } /** * Gets the template line where the error occurred. * * @return int The template line */ public function getTemplateLine() { return $this->lineno; } /** * Sets the template line where the error occurred. * * @param int $lineno The template line */ public function setTemplateLine($lineno) { $this->lineno = $lineno; $this->updateRepr(); } /** * Gets the source context of the Twig template where the error occurred. * * @return Source|null */ public function getSourceContext() { return $this->name ? new Source($this->sourceCode, $this->name, $this->sourcePath) : null; } /** * Sets the source context of the Twig template where the error occurred. */ public function setSourceContext(Source $source = null) { if (null === $source) { $this->sourceCode = $this->name = $this->sourcePath = null; } else { $this->sourceCode = $source->getCode(); $this->name = $source->getName(); $this->sourcePath = $source->getPath(); } $this->updateRepr(); } public function guess() { $this->guessTemplateInfo(); $this->updateRepr(); } public function appendMessage($rawMessage) { $this->rawMessage .= $rawMessage; $this->updateRepr(); } private function updateRepr() { $this->message = $this->rawMessage; if ($this->sourcePath && $this->lineno > 0) { $this->file = $this->sourcePath; $this->line = $this->lineno; return; } $dot = false; if ('.' === substr($this->message, -1)) { $this->message = substr($this->message, 0, -1); $dot = true; } $questionMark = false; if ('?' === substr($this->message, -1)) { $this->message = substr($this->message, 0, -1); $questionMark = true; } if ($this->name) { if (\is_string($this->name) || (\is_object($this->name) && method_exists($this->name, '__toString'))) { $name = sprintf('"%s"', $this->name); } else { $name = json_encode($this->name); } $this->message .= sprintf(' in %s', $name); } if ($this->lineno && $this->lineno >= 0) { $this->message .= sprintf(' at line %d', $this->lineno); } if ($dot) { $this->message .= '.'; } if ($questionMark) { $this->message .= '?'; } } private function guessTemplateInfo() { $template = null; $templateClass = null; $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS | DEBUG_BACKTRACE_PROVIDE_OBJECT); foreach ($backtrace as $trace) { if (isset($trace['object']) && $trace['object'] instanceof Template && 'Twig_Template' !== \get_class($trace['object'])) { $currentClass = \get_class($trace['object']); $isEmbedContainer = 0 === strpos($templateClass, $currentClass); if (null === $this->name || ($this->name == $trace['object']->getTemplateName() && !$isEmbedContainer)) { $template = $trace['object']; $templateClass = \get_class($trace['object']); } } } // update template name if (null !== $template && null === $this->name) { $this->name = $template->getTemplateName(); } // update template path if any if (null !== $template && null === $this->sourcePath) { $src = $template->getSourceContext(); $this->sourceCode = $src->getCode(); $this->sourcePath = $src->getPath(); } if (null === $template || $this->lineno > -1) { return; } $r = new \ReflectionObject($template); $file = $r->getFileName(); $exceptions = [$e = $this]; while ($e = $e->getPrevious()) { $exceptions[] = $e; } while ($e = array_pop($exceptions)) { $traces = $e->getTrace(); array_unshift($traces, ['file' => $e->getFile(), 'line' => $e->getLine()]); while ($trace = array_shift($traces)) { if (!isset($trace['file']) || !isset($trace['line']) || $file != $trace['file']) { continue; } foreach ($template->getDebugInfo() as $codeLine => $templateLine) { if ($codeLine <= $trace['line']) { // update template line $this->lineno = $templateLine; return; } } } } } } class_alias('Twig\Error\Error', 'Twig_Error');