1: <?php
 2: 
 3: namespace Deimos\Helper\Traits;
 4: 
 5: use Deimos\Builder\Builder;
 6: use Deimos\Helper\Helper as DeimosHelper;
 7: 
 8: trait Helper
 9: {
10: 
11:     /**
12:      * @var Builder
13:      */
14:     protected $builder;
15: 
16:     /**
17:      * @var DeimosHelper
18:      */
19:     private $helper;
20: 
21:     /**
22:      * @return DeimosHelper
23:      *
24:      * @throws \InvalidArgumentException
25:      */
26:     private function instanceHelper()
27:     {
28:         if (method_exists($this->builder, 'helper'))
29:         {
30:             return $this->builder->helper();
31:         }
32: 
33:         return new DeimosHelper($this->builder);
34:     }
35: 
36:     /**
37:      * @return DeimosHelper
38:      *
39:      * @throws \InvalidArgumentException
40:      */
41:     protected final function helper()
42:     {
43:         if (!$this->helper)
44:         {
45:             $this->helper = $this->instanceHelper();
46:         }
47: 
48:         return $this->helper;
49:     }
50: 
51: }