🚨 Reduce complexity

Author: chdemko

src/SortedCollection/AbstractMap.php

@@ -48,30 +48,26 @@ abstract class AbstractMap implements SortedMap
      */
     public function __get($property)
     {
-        switch ($property) {
-            case 'comparator':
-                return $this->comparator();
-            case 'firstKey':
-                return $this->firstKey();
-            case 'lastKey':
-                return $this->lastKey();
-            case 'firstValue':
-                return $this->firstValue();
-            case 'lastValue':
-                return $this->lastValue();
-            case 'first':
-                return $this->first();
-            case 'last':
-                return $this->last();
-            case 'keys':
-                return $this->keys();
-            case 'values':
-                return $this->values();
-            case 'count':
-                return $this->count();
-            default:
-                throw new \RuntimeException('Undefined property');
+        $map = array(
+            'comparator' => 'comparator',
+            'firstKey' => 'firstKey',
+            'lastKey' => 'lastKey',
+            'firstValue' => 'firstValue',
+            'lastValue' => 'lastValue',
+            'first' => 'first',
+            'last' => 'last',
+            'keys' => 'keys',
+            'values' => 'values',
+            'count' => 'count',
+        );
+
+        if (!isset($map[$property])) {
+            throw new \RuntimeException('Undefined property');
         }
+
+        $method = $map[$property];
+
+        return $this->$method();
     }
 
     /**