Function add

src/auth/SecureRemotePassword/Message.h:125–174

	template <typename T>
	unsigned add(unsigned& t, unsigned& sz, FieldLink* lnk)
	{
		if (metadata)
		{
			unsigned l = metadata->getCount(&statusWrapper);
			check(&statusWrapper);
			if (fieldCount >= l)
			{
#ifdef INTERNAL_FIREBIRD
				(Firebird::Arg::Gds(isc_random) <<
					"Attempt to add to the message more variables than possible").raise();
#else
				fatalErrorHandler("Attempt to add to the message more variables than possible");
#endif
			}

			t = metadata->getType(&statusWrapper, fieldCount);
			check(&statusWrapper);
			sz = metadata->getLength(&statusWrapper, fieldCount);
			check(&statusWrapper);
			if (!checkType<T>(t, sz))
			{
#ifdef INTERNAL_FIREBIRD
				(Firebird::Arg::Gds(isc_random) << "Incompatible data type").raise();
#else
				fatalErrorHandler("Incompatible data type");
#endif
			}
		}
		else
		{
			fb_assert(builder);

			unsigned f = builder->addField(&statusWrapper);
			check(&statusWrapper);

			fb_assert(f == fieldCount);

			t = getType<T>(sz);
			builder->setType(&statusWrapper, f, t);
			check(&statusWrapper);
			builder->setLength(&statusWrapper, f, sz);
			check(&statusWrapper);

			lnk->next = fieldList;
			fieldList = lnk;
		}

		return fieldCount++;
	}

	static void check(Firebird::IStatus* status)
	{