Allow ArrayAccess in dot helper

Author: kylekatarnls

src/JsPhpize/Compiler/Helpers/Dot.h

@@ -1,15 +1,20 @@
 function ($base) {
-    $getCallable = function ($base, $key) {
+    $getFromArray = function ($base, $key) {
+        return isset($base[$key])
+            ? $base[$key]
+            : null;
+    };
+    $getCallable = function ($base, $key) use ($getFromArray) {
         if (is_callable(array($base, $key))) {
             return array($base, $key);
         }
+        if ($base instanceof \ArrayAccess) {
+            return $getFromArray($base, $key);
+        }
     };
     foreach (array_slice(func_get_args(), 1) as $key) {
         $base = is_array($base)
-            ? (isset($base[$key])
-                ? $base[$key]
-                : null
-             )
+            ? $getFromArray($base, $key)
             : (is_object($base)
                 ? (isset($base->$key)
                     ? $base->$key

tests/dotHelper.php

@@ -24,6 +24,33 @@ public function __isset($name)
     }
 }
 
+class ArrayAccessObject implements \ArrayAccess
+{
+    protected $data = array(
+        'foo' => 'bar',
+    );
+
+    public function offsetGet($name)
+    {
+        return $this->data[$name];
+    }
+
+    public function offsetExists($name)
+    {
+        return isset($this->data[$name]);
+    }
+
+    public function offsetSet($name, $value)
+    {
+        $this->data[$name] = $value;
+    }
+
+    public function offsetUnset($name)
+    {
+        unset($this->data[$name]);
+    }
+}
+
 class DotHelperTest extends \PHPUnit_Framework_TestCase
 {
     protected function getDotHelper()
@@ -114,4 +141,13 @@ public function testMagicMethod()
         $this->assertSame('biz', call_user_func($dotHelper($object, 'bar')));
         $this->assertSame(null, call_user_func($dotHelper($object, 'biz')));
     }
+
+    public function testArrayAccess()
+    {
+        $dotHelper = $this->getDotHelper();
+        $object = new ArrayAccessObject();
+
+        $this->assertSame('bar', $dotHelper($object, 'foo'));
+        $this->assertSame(null, $dotHelper($object, 'biz'));
+    }
 }