1: <?php
 2: 
 3: namespace BN\Compiler\Postfix\Token;
 4: 
 5: use BN\Compiler\Token\Token;
 6: use BN\Compiler\Postfix\ProcessToken;
 7: 
 8: class ProcessConstant extends ProcessToken
 9: {
10:     private $constants;
11: 
12:     public function __construct($accumulator, array $constants)
13:     {
14:         $this->accumulator = $accumulator;
15:         $this->constants = $constants;
16:     }
17: 
18:     public function process(Token $token)
19:     {
20:         $constant = $token->value;
21:         if (array_key_exists($constant, $this->constants)) {
22:             $value = $this->constants[$constant];
23:             $this->accumulator->pushNumber($value);
24:         } else {
25:             $this->accumulator->stopCalculation('undefinedVariable', $constant);
26:         }
27:     }
28: }
29: