PHPSA\Context::getSymbol PHP Метод

    public function getSymbol($name)
    {
        return isset($this->symbols[$name]) ? $this->symbols[$name] : null;
    }

 /**
  * $a &= $b;
  *
  * @param \PhpParser\Node\Expr\AssignRef $expr
  * @param Context $context
  * @return CompiledExpression
  */
 protected function compile($expr, Context $context)
 {
     $compiler = $context->getExpressionCompiler();
     if ($expr->var instanceof VariableNode) {
         $name = $expr->var->name;
         $compiledExpression = $compiler->compile($expr->expr);
         $symbol = $context->getSymbol($name);
         if ($symbol) {
             $symbol->modify($compiledExpression->getType(), $compiledExpression->getValue());
         } else {
             $symbol = new \PHPSA\Variable($name, $compiledExpression->getValue(), $compiledExpression->getType(), $context->getCurrentBranch());
             $context->addVariable($symbol);
         }
         if ($expr->expr instanceof VariableNode) {
             $rightVarName = $expr->expr->name;
             $rightSymbol = $context->getSymbol($rightVarName);
             if ($rightSymbol) {
                 $rightSymbol->incUse();
                 $symbol->setReferencedTo($rightSymbol);
             } else {
                 $context->debug('Cannot fetch variable by name: ' . $rightVarName);
             }
         }
         $symbol->incSets();
         return $compiledExpression;
     }
     $context->debug('Unknown how to pass symbol by ref');
     return new CompiledExpression();
 }