Viewing file:  ExceptionCaster.php (8.61 KB) -rw-r--r--
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\VarDumper\Caster;
use Symfony\Component\VarDumper\Exception\ThrowingCasterException;
use Symfony\Component\VarDumper\Cloner\Stub;
/**
* Casts common Exception classes to array representation.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
class ExceptionCaster
{
public static $srcContext = 1;
public static $traceArgs = true;
public static $errorTypes = array(
E_DEPRECATED => 'E_DEPRECATED',
E_USER_DEPRECATED => 'E_USER_DEPRECATED',
E_RECOVERABLE_ERROR => 'E_RECOVERABLE_ERROR',
E_ERROR => 'E_ERROR',
E_WARNING => 'E_WARNING',
E_PARSE => 'E_PARSE',
E_NOTICE => 'E_NOTICE',
E_CORE_ERROR => 'E_CORE_ERROR',
E_CORE_WARNING => 'E_CORE_WARNING',
E_COMPILE_ERROR => 'E_COMPILE_ERROR',
E_COMPILE_WARNING => 'E_COMPILE_WARNING',
E_USER_ERROR => 'E_USER_ERROR',
E_USER_WARNING => 'E_USER_WARNING',
E_USER_NOTICE => 'E_USER_NOTICE',
E_STRICT => 'E_STRICT',
);
public static function castError(\Error $e, array $a, Stub $stub, $isNested, $filter = 0)
{
return self::filterExceptionArray($stub->class, $a, "\0Error\0", $filter);
}
public static function castException(\Exception $e, array $a, Stub $stub, $isNested, $filter = 0)
{
return self::filterExceptionArray($stub->class, $a, "\0Exception\0", $filter);
}
public static function castErrorException(\ErrorException $e, array $a, Stub $stub, $isNested)
{
if (isset($a[$s = Caster::PREFIX_PROTECTED.'severity'], self::$errorTypes[$a[$s]])) {
$a[$s] = new ConstStub(self::$errorTypes[$a[$s]], $a[$s]);
}
return $a;
}
public static function castThrowingCasterException(ThrowingCasterException $e, array $a, Stub $stub, $isNested)
{
$prefix = Caster::PREFIX_PROTECTED;
$xPrefix = "\0Exception\0";
if (isset($a[$xPrefix.'previous'], $a[$xPrefix.'trace'])) {
$b = (array) $a[$xPrefix.'previous'];
array_unshift($b[$xPrefix.'trace'], array(
'function' => 'new '.get_class($a[$xPrefix.'previous']),
'file' => $b[$prefix.'file'],
'line' => $b[$prefix.'line'],
));
$a[$xPrefix.'trace'] = new TraceStub($b[$xPrefix.'trace'], false, 0, -1 - count($a[$xPrefix.'trace']->value));
}
unset($a[$xPrefix.'previous'], $a[$prefix.'code'], $a[$prefix.'file'], $a[$prefix.'line']);
return $a;
}
public static function castTraceStub(TraceStub $trace, array $a, Stub $stub, $isNested)
{
if (!$isNested) {
return $a;
}
$stub->class = '';
$stub->handle = 0;
$frames = $trace->value;
$a = array();
$j = count($frames);
if (0 > $i = $trace->sliceOffset) {
$i = max(0, $j + $i);
}
if (!isset($trace->value[$i])) {
return array();
}
$lastCall = isset($frames[$i]['function']) ? ' ==> '.(isset($frames[$i]['class']) ? $frames[0]['class'].$frames[$i]['type'] : '').$frames[$i]['function'].'()' : '';
for ($j += $trace->numberingOffset - $i++; isset($frames[$i]); ++$i, --$j) {
$call = isset($frames[$i]['function']) ? (isset($frames[$i]['class']) ? $frames[$i]['class'].$frames[$i]['type'] : '').$frames[$i]['function'].'()' : '???';
$a[Caster::PREFIX_VIRTUAL.$j.'. '.$call.$lastCall] = new FrameStub(
array(
'object' => isset($frames[$i]['object']) ? $frames[$i]['object'] : null,
'class' => isset($frames[$i]['class']) ? $frames[$i]['class'] : null,
'type' => isset($frames[$i]['type']) ? $frames[$i]['type'] : null,
'function' => isset($frames[$i]['function']) ? $frames[$i]['function'] : null,
) + $frames[$i - 1],
$trace->keepArgs,
true
);
$lastCall = ' ==> '.$call;
}
$a[Caster::PREFIX_VIRTUAL.$j.'. {main}'.$lastCall] = new FrameStub(
array(
'object' => null,
'class' => null,
'type' => null,
'function' => '{main}',
) + $frames[$i - 1],
$trace->keepArgs,
true
);
if (null !== $trace->sliceLength) {
$a = array_slice($a, 0, $trace->sliceLength, true);
}
return $a;
}
public static function castFrameStub(FrameStub $frame, array $a, Stub $stub, $isNested)
{
if (!$isNested) {
return $a;
}
$f = $frame->value;
$prefix = Caster::PREFIX_VIRTUAL;
if (isset($f['file'], $f['line'])) {
if (preg_match('/\((\d+)\)(?:\([\da-f]{32}\))? : (?:eval\(\)\'d code|runtime-created function)$/', $f['file'], $match)) {
$f['file'] = substr($f['file'], 0, -strlen($match[0]));
$f['line'] = (int) $match[1];
}
if (file_exists($f['file']) && 0 <= self::$srcContext) {
$src[$f['file'].':'.$f['line']] = self::extractSource(explode("\n", file_get_contents($f['file'])), $f['line'], self::$srcContext);
if (!empty($f['class']) && is_subclass_of($f['class'], 'Twig_Template') && method_exists($f['class'], 'getDebugInfo')) {
$template = isset($f['object']) ? $f['object'] : new $f['class'](new \Twig_Environment(new \Twig_Loader_Filesystem()));
try {
$templateName = $template->getTemplateName();
$templateSrc = explode("\n", method_exists($template, 'getSource') ? $template->getSource() : $template->getEnvironment()->getLoader()->getSource($templateName));
$templateInfo = $template->getDebugInfo();
if (isset($templateInfo[$f['line']])) {
$src[$templateName.':'.$templateInfo[$f['line']]] = self::extractSource($templateSrc, $templateInfo[$f['line']], self::$srcContext);
}
} catch (\Twig_Error_Loader $e) {
}
}
} else {
$src[$f['file']] = $f['line'];
}
$a[$prefix.'src'] = new EnumStub($src);
}
unset($a[$prefix.'args'], $a[$prefix.'line'], $a[$prefix.'file']);
if ($frame->inTraceStub) {
unset($a[$prefix.'class'], $a[$prefix.'type'], $a[$prefix.'function']);
}
foreach ($a as $k => $v) {
if (!$v) {
unset($a[$k]);
}
}
if ($frame->keepArgs && isset($f['args'])) {
$a[$prefix.'args'] = $f['args'];
}
return $a;
}
private static function filterExceptionArray($xClass, array $a, $xPrefix, $filter)
{
if (isset($a[$xPrefix.'trace'])) {
$trace = $a[$xPrefix.'trace'];
unset($a[$xPrefix.'trace']); // Ensures the trace is always last
} else {
$trace = array();
}
if (!($filter & Caster::EXCLUDE_VERBOSE)) {
array_unshift($trace, array(
'function' => $xClass ? 'new '.$xClass : null,
'file' => $a[Caster::PREFIX_PROTECTED.'file'],
'line' => $a[Caster::PREFIX_PROTECTED.'line'],
));
$a[$xPrefix.'trace'] = new TraceStub($trace);
}
if (empty($a[$xPrefix.'previous'])) {
unset($a[$xPrefix.'previous']);
}
unset($a[$xPrefix.'string'], $a[Caster::PREFIX_DYNAMIC.'xdebug_message'], $a[Caster::PREFIX_DYNAMIC.'__destructorException']);
return $a;
}
private static function extractSource(array $srcArray, $line, $srcContext)
{
$src = array();
for ($i = $line - 1 - $srcContext; $i <= $line - 1 + $srcContext; ++$i) {
$src[] = (isset($srcArray[$i]) ? $srcArray[$i] : '')."\n";
}
$ltrim = 0;
while (' ' === $src[0][$ltrim] || "\t" === $src[0][$ltrim]) {
$i = $srcContext << 1;
while ($i > 0 && $src[0][$ltrim] === $src[$i][$ltrim]) {
--$i;
}
if ($i) {
break;
}
++$ltrim;
}
if ($ltrim) {
foreach ($src as $i => $line) {
$src[$i] = substr($line, $ltrim);
}
}
return implode('', $src);
}
}
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