#include "CommonTools/Utils/interface/parser/ExpressionSetter.h"
#include "CommonTools/Utils/src/AndCombiner.h"
#include "CommonTools/Utils/src/OrCombiner.h"
#include "CommonTools/Utils/src/NotCombiner.h"
#include "CommonTools/Utils/interface/parser/Exception.h"

using namespace reco::parser;

void ExpressionSetter::operator()(const char *begin, const char *) const {
  if (exprStack_.empty())
    throw Exception(begin)
        << "Grammar error: When trying parse an expression, expression stack is empty! Please contact a developer.";
  expr_ = exprStack_.back();
}