Function dsqlGenReturningLocalTableCursor

src/dsql/StmtNodes.cpp:9923–9961

Generate BLR for returning's local table cursor.

// Generate BLR for returning's local table cursor.
static void dsqlGenReturningLocalTableCursor(DsqlCompilerScratch* dsqlScratch, ReturningClause* returning,
	USHORT localTableNumber)
{
	dsqlGenEofAssignment(dsqlScratch, 1);

	const USHORT localForContext = dsqlScratch->contextNumber++;

	dsqlScratch->appendUChar(blr_for);
	dsqlScratch->putBlrMarkers(StmtNode::MARK_AVOID_COUNTERS);
	dsqlScratch->appendUChar(blr_rse);
	dsqlScratch->appendUChar(1);
	dsqlScratch->appendUChar(blr_local_table_id);
	dsqlScratch->appendUShort(localTableNumber);
	dsqlScratch->appendMetaString("");	// alias
	GEN_stuff_context_number(dsqlScratch, localForContext);
	dsqlScratch->appendUChar(blr_end);

	dsqlScratch->appendUChar(blr_send);
	dsqlScratch->appendUChar(dsqlScratch->getDsqlStatement()->getReceiveMsg()->msg_number);

	dsqlScratch->appendUChar(blr_begin);

	USHORT fieldNum = 0;

	for (auto& retTarget : returning->second->items)
	{
		dsqlScratch->appendUChar(blr_assignment);
		dsqlScratch->appendUChar(blr_fid);
		GEN_stuff_context_number(dsqlScratch, localForContext);
		dsqlScratch->appendUShort(fieldNum++);
		retTarget->genBlr(dsqlScratch);
	}

	dsqlScratch->appendUChar(blr_end);

	dsqlScratch->appendUChar(blr_send);
	dsqlScratch->appendUChar(dsqlScratch->getDsqlStatement()->getReceiveMsg()->msg_number);
	dsqlGenEofAssignment(dsqlScratch, 0);
}

// Generate BLR for returning's local table declaration.
static void dsqlGenReturningLocalTableDecl(DsqlCompilerScratch* dsqlScratch, USHORT tableNumber)