void ClassConstant::outputCPPImpl(CodeGenerator &cg, AnalysisResultPtr ar) {
  if (cg.getContext() != CodeGenerator::CppClassConstantsDecl &&
      cg.getContext() != CodeGenerator::CppClassConstantsImpl) {
    return;
  }

  ClassScopePtr scope = getClassScope();
  for (int i = 0; i < m_exp->getCount(); i++) {
    AssignmentExpressionPtr exp =
      dynamic_pointer_cast<AssignmentExpression>((*m_exp)[i]);
    ConstantExpressionPtr var =
      dynamic_pointer_cast<ConstantExpression>(exp->getVariable());
    TypePtr type = scope->getConstants()->getFinalType(var->getName());
    ExpressionPtr value = exp->getValue();
    if (scope->getConstants()->isDynamic(var->getName())) {
        continue;
    }
    switch (cg.getContext()) {
    case CodeGenerator::CppClassConstantsDecl:
      cg_printf("extern const ");
      if (type->is(Type::KindOfString)) {
        cg_printf("StaticString");
      } else {
        type->outputCPPDecl(cg, ar, getScope());
      }
      cg_printf(" %s%s%s%s;\n",
                Option::ClassConstantPrefix, scope->getId().c_str(),
                Option::IdPrefix.c_str(), var->getName().c_str());
      break;
    case CodeGenerator::CppClassConstantsImpl: {
      bool isString = type->is(Type::KindOfString);
      bool isVariant = Type::IsMappedToVariant(type);
      ScalarExpressionPtr scalarExp =
        dynamic_pointer_cast<ScalarExpression>(value);
      bool stringForVariant = false;
      if (isVariant && scalarExp &&
          scalarExp->getActualType() &&
          scalarExp->getActualType()->is(Type::KindOfString)) {
        cg_printf("static const StaticString %s%s%s%s%sv(LITSTR_INIT(%s));\n",
                  Option::ClassConstantPrefix, scope->getId().c_str(),
                  Option::IdPrefix.c_str(), var->getName().c_str(),
                  Option::IdPrefix.c_str(),
                  scalarExp->getCPPLiteralString().c_str());
        stringForVariant = true;
      }
      cg_printf("const ");
      if (isString) {
        cg_printf("StaticString");
      } else {
        type->outputCPPDecl(cg, ar, getScope());
      }
      value->outputCPPBegin(cg, ar);
      cg_printf(" %s%s%s%s",
                Option::ClassConstantPrefix, scope->getId().c_str(),
                Option::IdPrefix.c_str(), var->getName().c_str());
      cg_printf(isString ? "(" : " = ");
      if (stringForVariant) {
        cg_printf("%s%s%s%s%sv",
                  Option::ClassConstantPrefix, scope->getId().c_str(),
                  Option::IdPrefix.c_str(), var->getName().c_str(),
                  Option::IdPrefix.c_str());
      } else if (isString && scalarExp) {
        cg_printf("LITSTR_INIT(%s)",
                  scalarExp->getCPPLiteralString().c_str());
      } else {
        value->outputCPP(cg, ar);
      }
      cg_printf(isString ? ");\n" : ";\n");
      value->outputCPPEnd(cg, ar);
      break;
    }
    default:
      assert(false);
    }
  }
}