Method MessageMoverNode

src/jrd/ExtEngineManager.cpp:282–318

	{
	public:
		MessageMoverNode(MemoryPool& pool, MessageNode* fromMessage, MessageNode* toMessage,
					MessageNode* aCheckMessageEof = nullptr)
			: CompoundStmtNode(pool),
			  checkMessageEof(aCheckMessageEof)
		{
			// Iterate over the format items, except the EOF item.
			for (USHORT i = 0; i < (fromMessage->format->fmt_count / 2) * 2; i += 2)
			{
				ParameterNode* flag = FB_NEW_POOL(pool) ParameterNode(pool);
				flag->messageNumber = fromMessage->messageNumber;
				flag->message = fromMessage;
				flag->argNumber = i + 1;

				ParameterNode* param = FB_NEW_POOL(pool) ParameterNode(pool);
				param->messageNumber = fromMessage->messageNumber;
				param->message = fromMessage;
				param->argNumber = i;
				param->argFlag = flag;

				AssignmentNode* assign = FB_NEW_POOL(pool) AssignmentNode(pool);
				assign->asgnFrom = param;
				statements.add(assign);

				flag = FB_NEW_POOL(pool) ParameterNode(pool);
				flag->messageNumber = toMessage->messageNumber;
				flag->message = toMessage;
				flag->argNumber = i + 1;

				param = FB_NEW_POOL(pool) ParameterNode(pool);
				param->messageNumber = toMessage->messageNumber;
				param->message = toMessage;
				param->argNumber = i;
				param->argFlag = flag;

				assign->asgnTo = param;
			}
		}

		const StmtNode* execute(thread_db* tdbb, Request* request, ExeState* exeState) const override
		{