Pass Inspector into data table callbacks

examples/example.php

@@ -36,6 +36,17 @@ $handler->addDataTable('Ice-cream I like', array(
     'Vanilla' => 'ew',
 ));
 
+$handler->addDataTableCallback('Details', function(\Whoops\Exception\Inspector $inspector) {
+    $data = array();
+    $exception = $inspector->getException();
+    if ($exception instanceof SomeSpecificException) {
+        $data['Important exception data'] = $exception->getSomeSpecificData();
+    }
+    $data['Exception class'] = get_class($exception);
+    $data['Exception code'] = $exception->getCode();
+    return $data;
+});
+
 $run->pushHandler($handler);
 
 // Example: tag all frames inside a function with their function name

src/Whoops/Handler/PrettyPageHandler.php

@@ -180,8 +180,8 @@ class PrettyPageHandler extends Handler
 
         // Add extra entries list of data tables:
         // @todo: Consolidate addDataTable and addDataTableCallback
-        $extraTables = array_map(function ($table) {
-            return $table instanceof \Closure ? $table() : $table;
+        $extraTables = array_map(function ($table) use ($inspector) {
+            return $table instanceof \Closure ? $table($inspector) : $table;
         }, $this->getDataTables());
         $vars["tables"] = array_merge($extraTables, $vars["tables"]);
 
@@ -223,9 +223,9 @@ class PrettyPageHandler extends Handler
             throw new InvalidArgumentException('Expecting callback argument to be callable');
         }
 
-        $this->extraTables[$label] = function () use ($callback) {
+        $this->extraTables[$label] = function (\Whoops\Exception\Inspector $inspector = null) use ($callback) {
             try {
-                $result = call_user_func($callback);
+                $result = call_user_func($callback, $inspector);
 
                 // Only return the result if it can be iterated over by foreach().
                 return is_array($result) || $result instanceof \Traversable ? $result : array();

tests/Whoops/Handler/PrettyPageHandlerTest.php

@@ -155,27 +155,46 @@ class PrettyPageHandlerTest extends TestCase
         $table3 = create_function('', 'return array("oh my" => "how times have changed!");');
         $expected3 = array('oh my' => 'how times have changed!');
 
+        // Test inspector parameter in data table callback
+        $table4 = function (\Whoops\Exception\Inspector $inspector) use ($expected1) {
+            return array(
+              'Exception class' => get_class($inspector->getException()),
+              'Exception message' => $inspector->getExceptionMessage(),
+            );
+        };
+        $expected4 = array(
+          'Exception class' => 'InvalidArgumentException',
+          'Exception message' => 'Test exception message',
+        );
+        $inspectorForTable4 = new \Whoops\Exception\Inspector(
+            new \InvalidArgumentException('Test exception message')
+        );
+
         // Sanity check, make sure expected values really are correct.
         $this->assertSame($expected1, $table1());
         $this->assertSame($expected2, $table2());
         $this->assertSame($expected3, $table3());
+        $this->assertSame($expected4, $table4($inspectorForTable4));
 
         $handler->addDataTableCallback('table1', $table1);
         $handler->addDataTableCallback('table2', $table2);
         $handler->addDataTableCallback('table3', $table3);
+        $handler->addDataTableCallback('table4', $table4);
 
         $tables = $handler->getDataTables();
-        $this->assertCount(3, $tables);
+        $this->assertCount(4, $tables);
 
         // Supplied callable is wrapped in a closure
         $this->assertInstanceOf('Closure', $tables['table1']);
         $this->assertInstanceOf('Closure', $tables['table2']);
         $this->assertInstanceOf('Closure', $tables['table3']);
+        $this->assertInstanceOf('Closure', $tables['table4']);
 
         // Run each wrapped callable and check results against expected output.
         $this->assertEquals($expected1, $tables['table1']());
         $this->assertEquals($expected2, $tables['table2']());
         $this->assertEquals($expected3, $tables['table3']());
+        $this->assertEquals($expected4, $tables['table4']($inspectorForTable4));
 
         $this->assertSame($tables['table1'], $handler->getDataTables('table1'));
         $this->assertSame($expected1, call_user_func($handler->getDataTables('table1')));