Merge pull request #305 from tshelburne/304-quoting

added check in reference builder to enable quoting references

src/Nelmio/Alice/Instances/Processor/Methods/Reference.php

@@ -36,7 +36,7 @@ public function setObjects(Collection $objects)
      */
     public function canProcess(ProcessableInterface $processable)
     {
-        return is_string($processable->getValue()) && $processable->valueMatches('{^(?:(?<multi>\d+)x )?@(?<reference>[a-z0-9_.*-]+)(?<sequence>\{(?P<from>\d+)\.\.(?P<to>\d+)\})?(?:\->(?<property>[a-z0-9_-]+))?$}i');
+        return is_string($processable->getValue()) && $processable->valueMatches('{^\'?(?:(?<multi>\d+)x )?@(?<reference>[a-z0-9_.*-]+)(?<sequence>\{(?P<from>\d+)\.\.(?P<to>\d+)\})?(?:\->(?<property>[a-z0-9_-]+))?\'?$}i');
     }
 
     /**

tests/Nelmio/Alice/Fixtures/LoaderTest.php

@@ -267,6 +267,26 @@ public function testLoadParsesReferences()
         $this->assertEquals('alice', current($group->getMembers())->username);
     }
 
+    public function testLoadParsesReferencesInQuotes()
+    {
+        $res = $this->loadData([
+            self::USER => [
+                'user1' => [
+                    'username' => 'alice',
+                ],
+            ],
+            self::GROUP => [
+                'a' => [
+                    'members' => ['\'@user1\'']
+                ],
+            ],
+        ]);
+        $group = $res['a'];
+
+        $this->assertInstanceOf(self::USER, current($group->getMembers()));
+        $this->assertEquals('alice', current($group->getMembers())->username);
+    }
+
     public function testLoadParsesPropertyReferences()
     {
         $res = $this->loadData([