Module:Sandbox/AlphaZeta/test2 explained

---- This module implements

-- local p = local args = local origArgslocal rootlocal innerTable function union(t1, t2) -- Returns the union of the values of two tables, as a sequence. local vals = for k, v in pairs(t1) do vals[v] = true end for k, v in pairs(t2) do vals[v] = true end local ret = for k, v in pairs(vals) do table.insert(ret, k) end return retend

local function getArgNums(prefix) -- Returns a table containing the numbers of the arguments that exist -- for the specified prefix. For example, if the prefix was 'data', and -- 'data1', 'data2', and 'data5' exist, it would return . local nums = for k, v in pairs(args) do local num = tostring(k):match('^' .. prefix .. '([1-9]%d*)$') if num then table.insert(nums, tonumber(num)) end end table.sort(nums) return numsend

local function addRow(rowArgs) -- Adds a row to the infobox, with either a header cell -- or a label/data cell combination. if rowArgs.header then innerTable :tag('tr') :addClass(rowArgs.rowclass) :tag('th') :attr('colspan', 2) :addClass(rowArgs.class) :css('text-align', 'center') :cssText(args.headerstyle) :wikitext(rowArgs.header) elseif rowArgs.data then local row = innerTable:tag('tr') row:addClass(rowArgs.rowclass) if rowArgs.label then row :tag('th') :attr('scope', 'row') :css('text-align', 'left') :cssText(args.labelstyle) :wikitext(rowArgs.label) :done end local dataCell = row:tag('td') if not rowArgs.label then dataCell :attr('colspan', 2) :css('text-align', 'center') end dataCell :addClass(rowArgs.class) :cssText(rowArgs.datastyle) :newline :wikitext(rowArgs.data) endend

local function renderTitle if not args.title then return end

root :tag('caption') :addClass(args.titleclass) :cssText(args.titlestyle) :wikitext(args.title)end

local function renderAboveRow if not args.above then return end root :tag('tr') :tag('th') :attr('colspan', 2) :addClass(args.aboveclass) :css('text-align', 'center') :css('font-size', '125%') :css('font-weight', 'bold') :css('padding','5px 0 5px 0') :cssText(args.abovestyle) :wikitext(args.above)end

local function renderBelowRow if not args.below then return end innerTable :tag('tr') :tag('td') :attr('colspan', '2') :addClass(args.belowclass) :css('text-align', 'center') :cssText(args.belowstyle) :newline :wikitext(args.below)end

local function renderSubheaders if args.subheader then args.subheader1 = args.subheader end if args.subheaderrowclass then args.subheaderrowclass1 = args.subheaderrowclass end local subheadernums = getArgNums('subheader') for k, num in ipairs(subheadernums) do addRow endend

local function renderImages if args.image then args.image1 = args.image end if args.caption then args.caption1 = args.caption end local imagenums = getArgNums('image') for k, num in ipairs(imagenums) do local caption = args['caption' .. tostring(num)] local data = mw.html.create:wikitext(args['image' .. tostring(num)]) if caption then data :tag('br',) :done :tag('div') :cssText(args.captionstyle) :wikitext(caption) end addRow endend

local function renderRows -- Gets the union of the header and data argument numbers, -- and renders them all in order using addRow. local rownums = union(getArgNums('header'), getArgNums('data')) table.sort(rownums) for k, num in ipairs(rownums) do addRow endend

local function renderNavBar if not args.name then return end innerTable :tag('tr') :tag('td') :attr('colspan', '2') :css('text-align', 'right') :wikitext(mw.getCurrentFrame:expandTemplate)end

local function renderItalicTitle local italicTitle = args['italic title'] and mw.ustring.lower(args['italic title']) if italicTitle

or italicTitle

'force' or italicTitle

'yes' then innerTable:wikitext(mw.getCurrentFrame:expandTemplate) endend

local function renderTrackingCategories if args.decat ~= 'yes' then if #(getArgNums('data'))

0 and mw.title.getCurrentTitle.namespace

0 then innerTable:wikitext('') end if args.child

'yes' and args.title then innerTable:wikitext('') end endend

local function _infobox -- Specify the overall layout of the infobox, with special settings -- if the infobox is used as a 'child' inside another infobox. if args.child ~= 'yes' then root = mw.html.create('table') root :addClass('infobox') :css('width', '22em') :css('padding', '0') :attr('cellspacing', 0) -- :css('border-spacing', '3px') renderTitle renderAboveRow innerTable=root :tag('tr') :tag('td') :tag('table') innerTable --:addClass('infobox') :addClass(args.bodyclass) :attr('cellspacing', 3) :css('border', 'none') -- :css('border', 'solid 1px red') :css('margin', '0') :css('width', '100%') if args.subbox

'yes' then innerTable :css('padding', '0') :css('margin', '-3px') :css('width', 'auto') :css('font-size', '100%') :css('clear', 'none') :css('float', 'none') :css('background-color', 'transparent') end innerTable :cssText(args.bodystyle)

else root = mw.html.create root :wikitext(args.title) end

renderSubheaders renderImages renderRows renderBelowRow renderNavBar renderItalicTitle renderTrackingCategories return tostring(root)end

local function preprocessSingleArg(argName) -- If the argument exists and isn't blank, add it to the argument table. -- Blank arguments are treated as nil to match the behaviour of ParserFunctions. if origArgs[argName] and origArgs[argName] ~= then args[argName] = origArgs[argName] endend

local function preprocessArgs(prefixTable, step) -- Assign the parameters with the given prefixes to the args table, in order, in batches -- of the step size specified. This is to prevent references etc. from appearing in the -- wrong order. The prefixTable should be an array containing tables, each of which has -- two possible fields, a "prefix" string and a "depend" table. The function always parses -- parameters containing the "prefix" string, but only parses parameters in the "depend" -- table if the prefix parameter is present and non-blank. if type(prefixTable) ~= 'table' then error("Non-table value detected for the prefix table", 2) end if type(step) ~= 'number' then error("Invalid step value detected", 2) end -- Get arguments without a number suffix, and check for bad input. for i,v in ipairs(prefixTable) do if type(v) ~= 'table' or type(v.prefix) ~= "string" or (v.depend and type(v.depend) ~= 'table') then error('Invalid input detected to preprocessArgs prefix table', 2) end preprocessSingleArg(v.prefix) -- Only parse the depend parameter if the prefix parameter is present and not blank. if args[v.prefix] and v.depend then for j, dependValue in ipairs(v.depend) do if type(dependValue) ~= 'string' then error('Invalid "depend" parameter value detected in preprocessArgs') end preprocessSingleArg(dependValue) end end end

-- Get arguments with number suffixes. local a = 1 -- Counter variable. local moreArgumentsExist = true while moreArgumentsExist

true do moreArgumentsExist = false for i = a, a + step - 1 do for j,v in ipairs(prefixTable) do local prefixArgName = v.prefix .. tostring(i) if origArgs[prefixArgName] then moreArgumentsExist = true -- Do another loop if any arguments are found, even blank ones. preprocessSingleArg(prefixArgName) end -- Process the depend table if the prefix argument is present and not blank, or -- we are processing "prefix1" and "prefix" is present and not blank, and -- if the depend table is present. if v.depend and (args[prefixArgName] or (i

1 and args[v.prefix])) then for j,dependValue in ipairs(v.depend) do local dependArgName = dependValue .. tostring(i) preprocessSingleArg(dependArgName) end end end end a = a + step endend function p.infobox(frame) -- If called via #invoke, use the args passed into the invoking template. -- Otherwise, for testing purposes, assume args are being passed directly in. if frame

mw.getCurrentFrame then origArgs = frame:getParent.args else origArgs = frame end -- Parse the data parameters in the same order that the old

did, so that -- references etc. will display in the expected places. Parameters that depend on -- another parameter are only processed if that parameter is present, to avoid -- phantom references appearing in article reference lists. preprocessSingleArg('child') preprocessSingleArg('bodyclass') preprocessSingleArg('subbox') preprocessSingleArg('bodystyle') preprocessSingleArg('title') preprocessSingleArg('titleclass') preprocessSingleArg('titlestyle') preprocessSingleArg('above') preprocessSingleArg('aboveclass') preprocessSingleArg('abovestyle') preprocessArgs(10) preprocessSingleArg('subheaderstyle') preprocessSingleArg('subheaderclass') preprocessArgs(10) preprocessSingleArg('captionstyle') preprocessSingleArg('imagestyle') preprocessSingleArg('imageclass') preprocessArgs(50) preprocessSingleArg('headerstyle') preprocessSingleArg('labelstyle') preprocessSingleArg('datastyle') preprocessSingleArg('below') preprocessSingleArg('belowclass') preprocessSingleArg('belowstyle') preprocessSingleArg('name') args['italic title'] = origArgs['italic title'] -- different behaviour if blank or absent preprocessSingleArg('decat') return _infoboxend return p