Caster/ExceptionCaster.php

@@ -214,18 +214,24 @@ public static function castFrameStub(FrameStub $frame, array $a, Stub $stub, boo
 
                 if (is_file($f['file']) && 0 <= self::$srcContext) {
                     if (!empty($f['class']) && (is_subclass_of($f['class'], 'Twig\Template') || is_subclass_of($f['class'], 'Twig_Template')) && method_exists($f['class'], 'getDebugInfo')) {
-                        $template = $f['object'] ?? unserialize(sprintf('O:%d:"%s":0:{}', \strlen($f['class']), $f['class']));
-
-                        $ellipsis = 0;
-                        $templateSrc = method_exists($template, 'getSourceContext') ? $template->getSourceContext()->getCode() : (method_exists($template, 'getSource') ? $template->getSource() : '');
-                        $templateInfo = $template->getDebugInfo();
-                        if (isset($templateInfo[$f['line']])) {
-                            if (!method_exists($template, 'getSourceContext') || !is_file($templatePath = $template->getSourceContext()->getPath())) {
-                                $templatePath = null;
-                            }
-                            if ($templateSrc) {
-                                $src = self::extractSource($templateSrc, $templateInfo[$f['line']], self::$srcContext, 'twig', $templatePath, $f);
-                                $srcKey = ($templatePath ?: $template->getTemplateName()).':'.$templateInfo[$f['line']];
+                        $template = null;
+                        if (isset($f['object'])) {
+                            $template = $f['object'];
+                        } elseif ((new \ReflectionClass($f['class']))->isInstantiable()) {
+                            $template = unserialize(sprintf('O:%d:"%s":0:{}', \strlen($f['class']), $f['class']));
+                        }
+                        if (null !== $template) {
+                            $ellipsis = 0;
+                            $templateSrc = method_exists($template, 'getSourceContext') ? $template->getSourceContext()->getCode() : (method_exists($template, 'getSource') ? $template->getSource() : '');
+                            $templateInfo = $template->getDebugInfo();
+                            if (isset($templateInfo[$f['line']])) {
+                                if (!method_exists($template, 'getSourceContext') || !is_file($templatePath = $template->getSourceContext()->getPath())) {
+                                    $templatePath = null;
+                                }
+                                if ($templateSrc) {
+                                    $src = self::extractSource($templateSrc, $templateInfo[$f['line']], self::$srcContext, 'twig', $templatePath, $f);
+                                    $srcKey = ($templatePath ?: $template->getTemplateName()).':'.$templateInfo[$f['line']];
+                                }
                             }
                         }
                     }

Caster/ReflectionCaster.php

@@ -384,6 +384,8 @@ public static function getSignature(array $a)
                     $signature .= 10 > \strlen($v) && !str_contains($v, '\\') ? "'{$v}'" : "'…".\strlen($v)."'";
                 } elseif (\is_bool($v)) {
                     $signature .= $v ? 'true' : 'false';
+                } elseif (\is_object($v)) {
+                    $signature .= 'new '.substr(strrchr('\\'.get_debug_type($v), '\\'), 1);
                 } else {
                     $signature .= $v;
                 }

Caster/XmlReaderCaster.php

@@ -44,6 +44,22 @@ class XmlReaderCaster
 
     public static function castXmlReader(\XMLReader $reader, array $a, Stub $stub, bool $isNested)
     {
+        try {
+            $properties = [
+                'LOADDTD' => @$reader->getParserProperty(\XMLReader::LOADDTD),
+                'DEFAULTATTRS' => @$reader->getParserProperty(\XMLReader::DEFAULTATTRS),
+                'VALIDATE' => @$reader->getParserProperty(\XMLReader::VALIDATE),
+                'SUBST_ENTITIES' => @$reader->getParserProperty(\XMLReader::SUBST_ENTITIES),
+            ];
+        } catch (\Error $e) {
+            $properties = [
+                'LOADDTD' => false,
+                'DEFAULTATTRS' => false,
+                'VALIDATE' => false,
+                'SUBST_ENTITIES' => false,
+            ];
+        }
+
         $props = Caster::PREFIX_VIRTUAL.'parserProperties';
         $info = [
             'localName' => $reader->localName,
@@ -57,12 +73,7 @@ public static function castXmlReader(\XMLReader $reader, array $a, Stub $stub, b
             'value' => $reader->value,
             'namespaceURI' => $reader->namespaceURI,
             'baseURI' => $reader->baseURI ? new LinkStub($reader->baseURI) : $reader->baseURI,
-            $props => [
-                'LOADDTD' => $reader->getParserProperty(\XMLReader::LOADDTD),
-                'DEFAULTATTRS' => $reader->getParserProperty(\XMLReader::DEFAULTATTRS),
-                'VALIDATE' => $reader->getParserProperty(\XMLReader::VALIDATE),
-                'SUBST_ENTITIES' => $reader->getParserProperty(\XMLReader::SUBST_ENTITIES),
-            ],
+            $props => $properties,
         ];
 
         if ($info[$props] = Caster::filter($info[$props], Caster::EXCLUDE_EMPTY, [], $count)) {

README.md

@@ -3,7 +3,7 @@ VarDumper Component
 
 The VarDumper component provides mechanisms for walking through any arbitrary
 PHP variable. It provides a better `dump()` function that you can use instead
-of `var_dump`.
+of `var_dump()`.
 
 Resources
 ---------

Tests/Caster/ExceptionCasterTest.php

@@ -15,6 +15,7 @@
 use Symfony\Component\VarDumper\Caster\Caster;
 use Symfony\Component\VarDumper\Caster\ExceptionCaster;
 use Symfony\Component\VarDumper\Caster\FrameStub;
+use Symfony\Component\VarDumper\Caster\TraceStub;
 use Symfony\Component\VarDumper\Cloner\VarCloner;
 use Symfony\Component\VarDumper\Dumper\HtmlDumper;
 use Symfony\Component\VarDumper\Test\VarDumperTestTrait;
@@ -44,15 +45,15 @@ public function testDefaultSettings()
   #message: "foo"
   #code: 0
   #file: "%sExceptionCasterTest.php"
-  #line: 28
+  #line: %d
   trace: {
-    %s%eTests%eCaster%eExceptionCasterTest.php:28 {
+    %s%eTests%eCaster%eExceptionCasterTest.php:%d {
       Symfony\Component\VarDumper\Tests\Caster\ExceptionCasterTest->getTestException($msg, &$ref = null)
       › {
       ›     return new \Exception(''.$msg);
       › }
     }
-    %s%eTests%eCaster%eExceptionCasterTest.php:40 { …}
+    %s%eTests%eCaster%eExceptionCasterTest.php:%d { …}
 %A
 EODUMP;
 
@@ -66,13 +67,13 @@ public function testSeek()
 
         $expectedDump = <<<'EODUMP'
 {
-  %s%eTests%eCaster%eExceptionCasterTest.php:28 {
+  %s%eTests%eCaster%eExceptionCasterTest.php:%d {
     Symfony\Component\VarDumper\Tests\Caster\ExceptionCasterTest->getTestException($msg, &$ref = null)
     › {
     ›     return new \Exception(''.$msg);
     › }
   }
-  %s%eTests%eCaster%eExceptionCasterTest.php:65 { …}
+  %s%eTests%eCaster%eExceptionCasterTest.php:%d { …}
 %A
 EODUMP;
 
@@ -89,15 +90,15 @@ public function testNoArgs()
   #message: "1"
   #code: 0
   #file: "%sExceptionCasterTest.php"
-  #line: 28
+  #line: %d
   trace: {
-    %sExceptionCasterTest.php:28 {
+    %sExceptionCasterTest.php:%d {
       Symfony\Component\VarDumper\Tests\Caster\ExceptionCasterTest->getTestException($msg, &$ref = null)
       › {
       ›     return new \Exception(''.$msg);
       › }
     }
-    %s%eTests%eCaster%eExceptionCasterTest.php:84 { …}
+    %s%eTests%eCaster%eExceptionCasterTest.php:%d { …}
 %A
 EODUMP;
 
@@ -114,16 +115,40 @@ public function testNoSrcContext()
   #message: "1"
   #code: 0
   #file: "%sExceptionCasterTest.php"
-  #line: 28
+  #line: %d
   trace: {
-    %s%eTests%eCaster%eExceptionCasterTest.php:28
+    %s%eTests%eCaster%eExceptionCasterTest.php:%d
     %s%eTests%eCaster%eExceptionCasterTest.php:%d
 %A
 EODUMP;
 
         $this->assertDumpMatchesFormat($expectedDump, $e);
     }
 
+    public function testShouldReturnTraceForConcreteTwigWithError()
+    {
+        require_once \dirname(__DIR__).'/Fixtures/Twig.php';
+
+        $innerExc = (new \__TwigTemplate_VarDumperFixture_u75a09(null, __FILE__))->provideError();
+        $nestingWrapper = new \stdClass();
+        $nestingWrapper->trace = new TraceStub($innerExc->getTrace());
+
+        $expectedDump = <<<'EODUMP'
+{
+  +"trace": {
+    %sTwig.php:%d {
+      AbstractTwigTemplate->provideError()
+      › {
+      ›     return $this->createError();
+      › }
+    }
+    %sExceptionCasterTest.php:%d { …}
+%A
+EODUMP;
+
+        $this->assertDumpMatchesFormat($expectedDump, $nestingWrapper);
+    }
+
     public function testHtmlDump()
     {
         if (ini_get('xdebug.file_link_format') || get_cfg_var('xdebug.file_link_format')) {
@@ -146,10 +171,10 @@ public function testHtmlDump()
   #<span class=sf-dump-protected title="Protected property">code</span>: <span class=sf-dump-num>0</span>
   #<span class=sf-dump-protected title="Protected property">file</span>: "<span class=sf-dump-str title="%sExceptionCasterTest.php
 %d characters"><span class="sf-dump-ellipsis sf-dump-ellipsis-path">%s%eVarDumper</span><span class="sf-dump-ellipsis sf-dump-ellipsis-path">%e</span>Tests%eCaster%eExceptionCasterTest.php</span>"
-  #<span class=sf-dump-protected title="Protected property">line</span>: <span class=sf-dump-num>28</span>
+  #<span class=sf-dump-protected title="Protected property">line</span>: <span class=sf-dump-num>%d</span>
   <span class=sf-dump-meta>trace</span>: {<samp data-depth=2 class=sf-dump-compact>
     <span class=sf-dump-meta title="%sExceptionCasterTest.php
-Stack level %d."><span class="sf-dump-ellipsis sf-dump-ellipsis-path">%s%eVarDumper</span><span class="sf-dump-ellipsis sf-dump-ellipsis-path">%e</span>Tests%eCaster%eExceptionCasterTest.php</span>:<span class=sf-dump-num>28</span>
+Stack level %d."><span class="sf-dump-ellipsis sf-dump-ellipsis-path">%s%eVarDumper</span><span class="sf-dump-ellipsis sf-dump-ellipsis-path">%e</span>Tests%eCaster%eExceptionCasterTest.php</span>:<span class=sf-dump-num>%d</span>
      &hellip;%d
   </samp>}
 </samp>}
@@ -169,12 +194,12 @@ public function testFrameWithTwig()
         $f = [
             new FrameStub([
                 'file' => \dirname(__DIR__).'/Fixtures/Twig.php',
-                'line' => 20,
+                'line' => 33,
                 'class' => '__TwigTemplate_VarDumperFixture_u75a09',
             ]),
             new FrameStub([
                 'file' => \dirname(__DIR__).'/Fixtures/Twig.php',
-                'line' => 21,
+                'line' => 34,
                 'class' => '__TwigTemplate_VarDumperFixture_u75a09',
                 'object' => new \__TwigTemplate_VarDumperFixture_u75a09(null, __FILE__),
             ]),
@@ -186,7 +211,7 @@ public function testFrameWithTwig()
     class: "__TwigTemplate_VarDumperFixture_u75a09"
     src: {
       %sTwig.php:1 {
-        › 
+        ›%s
         › foo bar
         ›   twig source
       }
@@ -201,12 +226,11 @@ class: "__TwigTemplate_VarDumperFixture_u75a09"
       %sExceptionCasterTest.php:2 {
         › foo bar
         ›   twig source
-        › 
+        ›%s
       }
     }
   }
 ]
-
 EODUMP;
 
         $this->assertDumpMatchesFormat($expectedDump, $f);
@@ -221,7 +245,7 @@ public function testExcludeVerbosity()
   #message: "foo"
   #code: 0
   #file: "%sExceptionCasterTest.php"
-  #line: 28
+  #line: %d
 }
 EODUMP;
 

Tests/Caster/ReflectionCasterTest.php

@@ -602,6 +602,27 @@ public function testGenerator()
         $this->assertDumpMatchesFormat($expectedDump, $generator);
     }
 
+    /**
+     * @requires PHP 8.1
+     */
+    public function testNewInInitializer()
+    {
+        $f = eval('return function ($a = new stdClass()) {};');
+        $line = __LINE__ - 1;
+
+        $this->assertDumpMatchesFormat(
+            <<<EOTXT
+Closure(\$a = new stdClass) {
+  class: "Symfony\Component\VarDumper\Tests\Caster\ReflectionCasterTest"
+  this: Symfony\Component\VarDumper\Tests\Caster\ReflectionCasterTest { …}
+  file: "%sReflectionCasterTest.php($line) : eval()'d code"
+  line: "1 to 1"
+}
+EOTXT
+            , $f
+        );
+    }
+
     /**
      * @requires PHP 8
      */

Tests/Caster/XmlReaderCasterTest.php

@@ -245,4 +245,18 @@ public function provideNodes()
             ],
         ];
     }
+
+    public function testWithUninitializedXMLReader()
+    {
+        $this->reader = new \XmlReader();
+
+        $expectedDump = <<<'EODUMP'
+XMLReader {
+  +nodeType: NONE
+   …13
+}
+EODUMP;
+
+        $this->assertDumpMatchesFormat($expectedDump, $this->reader);
+    }
 }

Tests/Fixtures/Twig.php

@@ -1,7 +1,20 @@
 <?php
 
+abstract class AbstractTwigTemplate extends Twig\Template
+{
+    private function createError()
+    {
+        return new \RuntimeException('Manually triggered error.');
+    }
+
+    public function provideError()
+    {
+        return $this->createError();
+    }
+}
+
 /* foo.twig */
-class __TwigTemplate_VarDumperFixture_u75a09 extends Twig\Template
+class __TwigTemplate_VarDumperFixture_u75a09 extends AbstractTwigTemplate
 {
     private $path;
 
@@ -28,7 +41,7 @@ public function getTemplateName()
 
     public function getDebugInfo()
     {
-        return [20 => 1, 21 => 2];
+        return [33 => 1, 34 => 2];
     }
 
     public function getSourceContext()