/**
* @param RuleNode $astNode
* @return bool
*/
public function postVisitRuleNode(RuleNode $astNode)
{
$expressions = $this->visitContext->popExpressions($this);
$symbol = $this->visitContext->popLeftHandSymbol($this);
//remove the lhs we just popped from the visit context
array_shift($expressions);
$production = new StandardProduction($symbol, array_shift($expressions));
$this->visitContext->collectProduction($production);
return true;
}
/**
* @param ChoiceNode $astNode
*
* @return bool
*/
public function postVisitChoiceNode(ChoiceNode $astNode)
{
$children = $this->visitContext->popExpressions($this);
$expression = new Choice(array_shift($children), $children);
$this->visitContext->pushExpression($expression);
}
