299 lines
12 KiB
PHP
299 lines
12 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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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namespace Symfony\Component\VarDumper\Caster;
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use Symfony\Component\VarDumper\Exception\ThrowingCasterException;
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use Symfony\Component\VarDumper\Cloner\Stub;
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/**
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* Casts common Exception classes to array representation.
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*
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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class ExceptionCaster
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{
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public static $srcContext = 1;
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public static $traceArgs = true;
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public static $errorTypes = array(
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E_DEPRECATED => 'E_DEPRECATED',
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E_USER_DEPRECATED => 'E_USER_DEPRECATED',
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E_RECOVERABLE_ERROR => 'E_RECOVERABLE_ERROR',
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E_ERROR => 'E_ERROR',
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E_WARNING => 'E_WARNING',
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E_PARSE => 'E_PARSE',
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E_NOTICE => 'E_NOTICE',
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E_CORE_ERROR => 'E_CORE_ERROR',
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E_CORE_WARNING => 'E_CORE_WARNING',
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E_COMPILE_ERROR => 'E_COMPILE_ERROR',
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E_COMPILE_WARNING => 'E_COMPILE_WARNING',
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E_USER_ERROR => 'E_USER_ERROR',
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E_USER_WARNING => 'E_USER_WARNING',
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E_USER_NOTICE => 'E_USER_NOTICE',
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E_STRICT => 'E_STRICT',
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);
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private static $framesCache = array();
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public static function castError(\Error $e, array $a, Stub $stub, $isNested, $filter = 0)
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{
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return self::filterExceptionArray($stub->class, $a, "\0Error\0", $filter);
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}
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public static function castException(\Exception $e, array $a, Stub $stub, $isNested, $filter = 0)
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{
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return self::filterExceptionArray($stub->class, $a, "\0Exception\0", $filter);
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}
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public static function castErrorException(\ErrorException $e, array $a, Stub $stub, $isNested)
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{
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if (isset($a[$s = Caster::PREFIX_PROTECTED.'severity'], self::$errorTypes[$a[$s]])) {
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$a[$s] = new ConstStub(self::$errorTypes[$a[$s]], $a[$s]);
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}
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return $a;
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}
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public static function castThrowingCasterException(ThrowingCasterException $e, array $a, Stub $stub, $isNested)
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{
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$prefix = Caster::PREFIX_PROTECTED;
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$xPrefix = "\0Exception\0";
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if (isset($a[$xPrefix.'previous'], $a[$xPrefix.'trace'])) {
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$b = (array) $a[$xPrefix.'previous'];
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self::traceUnshift($b[$xPrefix.'trace'], get_class($a[$xPrefix.'previous']), $b[$prefix.'file'], $b[$prefix.'line']);
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$a[$xPrefix.'trace'] = new TraceStub($b[$xPrefix.'trace'], false, 0, -1 - count($a[$xPrefix.'trace']->value));
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}
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unset($a[$xPrefix.'previous'], $a[$prefix.'code'], $a[$prefix.'file'], $a[$prefix.'line']);
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return $a;
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}
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public static function castTraceStub(TraceStub $trace, array $a, Stub $stub, $isNested)
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{
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if (!$isNested) {
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return $a;
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}
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$stub->class = '';
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$stub->handle = 0;
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$frames = $trace->value;
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$prefix = Caster::PREFIX_VIRTUAL;
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$a = array();
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$j = count($frames);
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if (0 > $i = $trace->sliceOffset) {
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$i = max(0, $j + $i);
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}
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if (!isset($trace->value[$i])) {
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return array();
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}
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$lastCall = isset($frames[$i]['function']) ? (isset($frames[$i]['class']) ? $frames[0]['class'].$frames[$i]['type'] : '').$frames[$i]['function'].'()' : '';
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$frames[] = array('function' => '');
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for ($j += $trace->numberingOffset - $i++; isset($frames[$i]); ++$i, --$j) {
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$f = $frames[$i];
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$call = isset($f['function']) ? (isset($f['class']) ? $f['class'].$f['type'] : '').$f['function'].'()' : '???';
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$label = substr_replace($prefix, "title=Stack level $j.", 2, 0).$lastCall;
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$frame = new FrameStub(
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array(
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'object' => isset($f['object']) ? $f['object'] : null,
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'class' => isset($f['class']) ? $f['class'] : null,
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'type' => isset($f['type']) ? $f['type'] : null,
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'function' => isset($f['function']) ? $f['function'] : null,
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) + $frames[$i - 1],
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false,
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true
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);
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$f = self::castFrameStub($frame, array(), $frame, true);
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if (isset($f[$prefix.'src'])) {
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foreach ($f[$prefix.'src']->value as $label => $frame) {
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$label = substr_replace($label, "title=Stack level $j.&", 2, 0);
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}
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$f = $frames[$i - 1];
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if ($trace->keepArgs && !empty($f['args']) && $frame instanceof EnumStub) {
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$frame->value['arguments'] = new ArgsStub($f['args'], isset($f['function']) ? $f['function'] : null, isset($f['class']) ? $f['class'] : null);
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}
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}
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$a[$label] = $frame;
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$lastCall = $call;
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}
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if (null !== $trace->sliceLength) {
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$a = array_slice($a, 0, $trace->sliceLength, true);
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}
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return $a;
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}
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public static function castFrameStub(FrameStub $frame, array $a, Stub $stub, $isNested)
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{
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if (!$isNested) {
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return $a;
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}
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$f = $frame->value;
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$prefix = Caster::PREFIX_VIRTUAL;
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if (isset($f['file'], $f['line'])) {
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$cacheKey = $f;
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unset($cacheKey['object'], $cacheKey['args']);
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$cacheKey[] = self::$srcContext;
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$cacheKey = implode('-', $cacheKey);
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if (isset(self::$framesCache[$cacheKey])) {
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$a[$prefix.'src'] = self::$framesCache[$cacheKey];
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} else {
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if (preg_match('/\((\d+)\)(?:\([\da-f]{32}\))? : (?:eval\(\)\'d code|runtime-created function)$/', $f['file'], $match)) {
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$f['file'] = substr($f['file'], 0, -strlen($match[0]));
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$f['line'] = (int) $match[1];
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}
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$caller = isset($f['function']) ? sprintf('in %s() on line %d', (isset($f['class']) ? $f['class'].$f['type'] : '').$f['function'], $f['line']) : null;
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$src = $f['line'];
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$srcKey = $f['file'];
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$ellipsis = explode(DIRECTORY_SEPARATOR, $srcKey);
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$ellipsis = 3 < count($ellipsis) ? 2 + strlen(implode(array_slice($ellipsis, -2))) : 0;
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if (file_exists($f['file']) && 0 <= self::$srcContext) {
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if (!empty($f['class']) && is_subclass_of($f['class'], 'Twig_Template') && method_exists($f['class'], 'getDebugInfo')) {
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$template = isset($f['object']) ? $f['object'] : unserialize(sprintf('O:%d:"%s":0:{}', strlen($f['class']), $f['class']));
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$ellipsis = 0;
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$templateSrc = method_exists($template, 'getSourceContext') ? $template->getSourceContext()->getCode() : (method_exists($template, 'getSource') ? $template->getSource() : '');
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$templateInfo = $template->getDebugInfo();
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if (isset($templateInfo[$f['line']])) {
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if (!method_exists($template, 'getSourceContext') || !file_exists($templatePath = $template->getSourceContext()->getPath())) {
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$templatePath = null;
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}
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if ($templateSrc) {
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$src = self::extractSource($templateSrc, $templateInfo[$f['line']], self::$srcContext, $caller, 'twig', $templatePath);
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$srcKey = ($templatePath ?: $template->getTemplateName()).':'.$templateInfo[$f['line']];
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}
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}
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}
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if ($srcKey == $f['file']) {
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$src = self::extractSource(file_get_contents($f['file']), $f['line'], self::$srcContext, $caller, 'php', $f['file']);
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$srcKey .= ':'.$f['line'];
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if ($ellipsis) {
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$ellipsis += 1 + strlen($f['line']);
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}
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}
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}
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$srcAttr = $ellipsis ? 'ellipsis='.$ellipsis : '';
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self::$framesCache[$cacheKey] = $a[$prefix.'src'] = new EnumStub(array("\0~$srcAttr\0$srcKey" => $src));
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}
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}
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unset($a[$prefix.'args'], $a[$prefix.'line'], $a[$prefix.'file']);
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if ($frame->inTraceStub) {
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unset($a[$prefix.'class'], $a[$prefix.'type'], $a[$prefix.'function']);
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}
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foreach ($a as $k => $v) {
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if (!$v) {
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unset($a[$k]);
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}
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}
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if ($frame->keepArgs && !empty($f['args'])) {
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$a[$prefix.'arguments'] = new ArgsStub($f['args'], $f['function'], $f['class']);
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}
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return $a;
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}
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private static function filterExceptionArray($xClass, array $a, $xPrefix, $filter)
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{
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if (isset($a[$xPrefix.'trace'])) {
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$trace = $a[$xPrefix.'trace'];
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unset($a[$xPrefix.'trace']); // Ensures the trace is always last
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} else {
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$trace = array();
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}
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if (!($filter & Caster::EXCLUDE_VERBOSE)) {
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if (isset($a[Caster::PREFIX_PROTECTED.'file'], $a[Caster::PREFIX_PROTECTED.'line'])) {
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self::traceUnshift($trace, $xClass, $a[Caster::PREFIX_PROTECTED.'file'], $a[Caster::PREFIX_PROTECTED.'line']);
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}
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$a[$xPrefix.'trace'] = new TraceStub($trace, self::$traceArgs);
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}
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if (empty($a[$xPrefix.'previous'])) {
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unset($a[$xPrefix.'previous']);
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}
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unset($a[$xPrefix.'string'], $a[Caster::PREFIX_DYNAMIC.'xdebug_message'], $a[Caster::PREFIX_DYNAMIC.'__destructorException']);
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if (isset($a[Caster::PREFIX_PROTECTED.'file'], $a[Caster::PREFIX_PROTECTED.'line'])) {
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$a[Caster::PREFIX_PROTECTED.'file'] = new LinkStub($a[Caster::PREFIX_PROTECTED.'file'], $a[Caster::PREFIX_PROTECTED.'line']);
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}
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return $a;
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}
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private static function traceUnshift(&$trace, $class, $file, $line)
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{
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if (isset($trace[0]['file'], $trace[0]['line']) && $trace[0]['file'] === $file && $trace[0]['line'] === $line) {
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return;
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}
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array_unshift($trace, array(
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'function' => $class ? 'new '.$class : null,
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'file' => $file,
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'line' => $line,
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));
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}
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private static function extractSource($srcLines, $line, $srcContext, $title, $lang, $file = null)
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{
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$srcLines = explode("\n", $srcLines);
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$src = array();
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for ($i = $line - 1 - $srcContext; $i <= $line - 1 + $srcContext; ++$i) {
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$src[] = (isset($srcLines[$i]) ? $srcLines[$i] : '')."\n";
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}
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$srcLines = array();
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$ltrim = 0;
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do {
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$pad = null;
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for ($i = $srcContext << 1; $i >= 0; --$i) {
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if (isset($src[$i][$ltrim]) && "\r" !== ($c = $src[$i][$ltrim]) && "\n" !== $c) {
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if (null === $pad) {
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$pad = $c;
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}
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if ((' ' !== $c && "\t" !== $c) || $pad !== $c) {
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break;
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}
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}
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}
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++$ltrim;
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} while (0 > $i && null !== $pad);
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--$ltrim;
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foreach ($src as $i => $c) {
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if ($ltrim) {
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$c = isset($c[$ltrim]) && "\r" !== $c[$ltrim] ? substr($c, $ltrim) : ltrim($c, " \t");
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}
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$c = substr($c, 0, -1);
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if ($i !== $srcContext) {
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$c = new ConstStub('default', $c);
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} else {
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$c = new ConstStub($c, $title);
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if (null !== $file) {
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$c->attr['file'] = $file;
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$c->attr['line'] = $line;
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}
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}
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$c->attr['lang'] = $lang;
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$srcLines[sprintf("\0~%d\0", $i + $line - $srcContext)] = $c;
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}
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return new EnumStub($srcLines);
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}
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}
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