Function PASS1_post_map

src/dsql/pass1.cpp:2888–2937

Post an item to a map for a context.

// Post an item to a map for a context.
DsqlMapNode* PASS1_post_map(DsqlCompilerScratch* dsqlScratch, ValueExprNode* node,
	dsql_ctx* context, WindowClause* windowNode)
{
	DEV_BLKCHK(node, dsql_type_nod);
	DEV_BLKCHK(context, dsql_type_ctx);

	thread_db* tdbb = JRD_get_thread_data();

	WindowMap* windowMap = NULL;
	dsql_map* map = NULL;

	if (dsqlScratch->processingWindow)
	{
		windowMap = context->getWindowMap(dsqlScratch, windowNode);
		map = windowMap->map;
	}
	else
		map = context->ctx_map;

	USHORT count = 0;

	while (map)
	{
		if (PASS1_node_match(dsqlScratch, node, map->map_node, false))
			break;

		++count;
		map = map->map_next;
	}

	if (!map)
	{
		dsql_map** next = windowMap ? &windowMap->map : &context->ctx_map;

		if (*next)
		{
			while (*(next = &(*next)->map_next))
				;
		}

		map = *next = FB_NEW_POOL(*tdbb->getDefaultPool()) dsql_map;
		map->map_position = count;
		map->map_node = node;
		map->map_window = windowMap;
	}

	DsqlDescMaker::fromNode(dsqlScratch, node);

	return FB_NEW_POOL(*tdbb->getDefaultPool()) DsqlMapNode(*tdbb->getDefaultPool(), context, map);
}


// For each relation in the list, flag the relation's context as having a parent context.