local p = {}

--Returns a blacklist of unacceptable wikidata instance-of's,
--either as a table for use inside a module such as [[Module:Taxonbar]],
--or as an ordered list for use in documentation.
function p.blacklist( frame )
	local documentation = frame.args[1]
	local unacceptableInstanceOf_All = { --table order == display order
		'Q913170',		--trivial name
		'Q55983715',	--group of organisms known by one particular common name
		'Q937228',		--property
		'Q14712',		--drupe
		'Q163233',		--compound drupe
		'Q747463',		--compound fruit
	}
	
	if (documentation == nil) or --module only
	   (documentation and documentation == '')
	then
		local out = {}
		for k, v in pairs( unacceptableInstanceOf_All ) do
			out[v] = k --output Q# as keys for table lookups
		end
		return out
		
	elseif (documentation == 'docdoc') then --self-documentation only
		local selfdocout = 'myBlacklist = {\n'
		for k, q in pairs( unacceptableInstanceOf_All ) do
			selfdocout = selfdocout..'\t\''..q..'\' = '..k..',\n'
		end
		selfdocout = selfdocout..'}'
		local args = { ['lang'] = 'lua',
					   ['code'] = selfdocout }
		out = frame:expandTemplate{ title = 'Syntaxhighlight', args = args }
		return out
		
	else --normal documentation only
		local out = ''
		for _, q in pairs( unacceptableInstanceOf_All ) do
			local Q = frame:expandTemplate{ title = 'Q', args = { q } }
			out = out..'# '..Q..'\n'
		end
		out = mw.ustring.gsub(out, '%s+$', '')
		return out
	end
	
end

return p