Module:Documentation

local p = {} local h = {}

local i18n = require("Module:I18n") local s = i18n.getString local utilsMarkup = require("Module:UtilsMarkup") local utilsString = require("Module:UtilsString") local utilsTable = require("Module:UtilsTable")

local frame = mw.getCurrentFrame function p.Examples(frame) local args = frame:getParent.args return p.template(args) end

function p.Module(frame) local docPage = mw.title.new(frame:getParent:getTitle) local modulePage = "Module:" .. docPage.baseText local module = require(modulePage) if not module.Documentation then error(s("noDocumentationProperty", modulePage)) end return p.module(module, module.Documentation, frame.args, 2) end

function p.module(module, doc, options, headerLevel) local output = '' if headerLevel == 2 then output = "\n" end for _, functionDoc in ipairs(doc) do output = output .. utilsMarkup.heading(headerLevel)(functionDoc.name) .. "\n" if functionDoc.wip then output = output .. frame:expandTemplate({title = "UC"}) .. "\n" end output = output .. h.printFunctionSyntax(functionDoc.name, functionDoc.params, functionDoc) output = output .. h.printParamsDescription(functionDoc.params, functionDoc) output = output .. h.printReturnsDescription(functionDoc.returns) output = output .. h.printFunctionCases(module[functionDoc.name], functionDoc.name, functionDoc.cases, functionDoc) end if (doc.sections) then for _, section in ipairs(doc.sections) do output = output .. ("==%s=="):format(section.heading) .. "\n" output = output .. p.module(module, section.doc or {}, options, headerLevel + 1) .. "\n" end end return output end

function p.template(templateExamples) if not templateExamples.vertical then local tableData = { hideEmptyColumns = true, rows = { { s("headers.input"), s("headers.output"), s("headers.categoriesAdded"), header = true } }		}		for _, example in ipairs(templateExamples) do			local input, output, categoryList = h.templateExample(example) input = utilsMarkup.code(input) table.insert(tableData.rows, {input, output, categoryList}) end return utilsMarkup.wikitable(tableData) end local result = "" for _, example in ipairs(templateExamples) do		local input, output, categoryList = h.templateExample(example) input = utilsMarkup.pre(input) local headerStyles = { ["width"] = "5rem" -- for alignment. See Template:Letter/Documentation for an example of why this is needed }		result = result .. utilsMarkup.wikitable({			hideEmptyRows = true,			rows = {				{					{ header = true, content= s("headers.input"), styles = headerStyles}, 					input,				},				{					{ header = true, content = s("headers.output"), styles = headerStyles}, 					output				},				{					{ header = true, content = s("headers.categoriesAdded"), styles = headerStyles },					categoryList				},			}		}) .. "\n" end return result end

function h.templateExample(example) local input = mw.text.unstripNoWiki(example) local output = frame:preprocess(input) input = mw.text.trim(input) input = mw.text.nowiki(input) local output, categories = utilsMarkup.stripCategories(output) local output = utilsMarkup.killBacklinks(output) local categoryList = utilsMarkup.bulletList(categories) return input, output, categoryList end

function h.printFunctionSyntax(functionName, params, options) params = params or {} local syntax = functionName if not options.order then syntax = syntax .. h.printFunctionCall(params) end for i = 1, options.order or 0 do syntax = syntax .. h.printFunctionCall(params[i] or {}) end return utilsMarkup.code(syntax) .. "\n" end function h.printFunctionCall(params) local paramNames = utilsTable.map(h.printParamSyntax)(params) local paramSyntax = table.concat(paramNames, ", ") return "(" .. paramSyntax .. ")" end

function h.printParamSyntax(param) local name = param.name if param.optional then name = "[" .. name .. "]"	end return name end

function h.printParamsDescription(params, options) if not params or #params == 0 then return "" end if options.order then params = utilsTable.flatten(params) end local output = ";" .. s("headers.parameters") .. "\n" for _, param in ipairs(params) do		local parameter = (""):format(param.name, param.description or "", param.optional and "Optional" or "Required") output = output .. mw.getCurrentFrame:preprocess(parameter) .. "\n" end return output .. "\n" end

function h.printReturnsDescription(returns) if not returns then return "" end if type(returns) == "string" then returns = { returns } end local returnsList = utilsMarkup.bulletList(returns) local header = ";" .. s("headers.returns") .. "\n" local result = header .. mw.getCurrentFrame:preprocess(returnsList) .. "\n" return result end

function h.printFunctionCases(fn, fnName, fnCases, options) local output = ";" .. s("headers.examples") .. "\n" local inputColumn = s("headers.input") local outputColumn = s("headers.output") local resultColumn = s("headers.result") local statusColumn = utilsMarkup.explain(s("explainStatusColumn"))(s("headers.status")) local headerCells = utilsTable.compactNils({		inputColumn, 		not options.resultOnly and outputColumn or nil, 		not options.outputOnly and resultColumn or nil, 		statusColumn,	}) local tableData = { hideEmptyColumns = true, rows = { {				header = true, cells = headerCells, }		},	}	for _, case in ipairs(fnCases or {}) do		local caseRows = h.case(fn, fnName, case, options) tableData.rows = utilsTable.mergeArrays(tableData.rows, caseRows) end output = output .. utilsMarkup.wikitable(tableData) .. "\n" return output end

function h.case(fn, fnName, case, options) local rows = {} local input = h.evaluateInput(fnName, case.args, options) local outputs = h.evaluateFunction(fn, case.args, options.order) local expected = case.expected local numReturns = type(options.returns) == "table" and #options.returns or 1 if numReturns == 1 then expected = { expected } end for i = 1, numReturns do		local outputData, resultData, statusData = h.evaluateOutput(outputs[i], expected[i]) table.insert(rows, utilsTable.compactNils({ not options.resultOnly and outputData or nil, not options.outputOnly and resultData or nil, statusData }))	end table.insert(rows[1], 1, {		content = input,		rowspan = numReturns,	}) if case.description then table.insert(rows, 1, {			{				header = true,				colspan = -1,				styles = {					["text-align"] = "left"				},				content = case.description,			}		}) end return rows end

function h.evaluateInput(fnName, args, options) local args = args or {} local input = fnName if not options.order then input = input .. "(" .. h.printInputArgs(args, options.params) ..")" end for i = 1, options.order or 0 do input = input .. "(" .. h.printInputArgs(args[i] or {}, options.params[i]) ..")" end return utilsMarkup.lua(input) end function h.printInputArgs(args, params) argsText = utilsTable.map(utilsTable.print)(args) -- For displaying stuff like foo(nil) in examples where required arguments are nil (e.g. Module:UtilsArg/Validate) local optionalParams = utilsTable.map("optional")(params) local numRequired = #params - #optionalParams local nilRequired = numRequired - #utilsTable.compactNils(args) for i = 1, nilRequired do		table.insert(argsText, "nil") end return table.concat(argsText, ", ") end

function h.evaluateFunction(fn, args, order) args = args or {} if not order then return {fn(unpack(args))} end for i = 1, order - 1 do		fn = fn(unpack(args[i])) end return {fn(unpack(args[order]))} end

function h.evaluateOutput(output, expected) local formattedOutput = h.formatValue(output) local outputData = formattedOutput local resultData = "" if type(output) == "string" then resultData = utilsMarkup.killBacklinks(output) resultData, categories = utilsMarkup.stripCategories(output) if (#categories > 0) then local categoryList = utilsMarkup.bold(s('headers.categoriesAdded')) .. utilsMarkup.bulletList(categories) resultData = { {resultData}, {categoryList}, }		end end if type(expected) == "string" then expected = string.gsub(expected, "\t", "") end local passed = utilsTable.isEqual(expected)(output) local statusData = (expected ~= nil or output == nil) and h.printStatus(passed) or nil if statusData and not passed then local expectedOutput = h.formatValue(expected) outputData = utilsMarkup.wikitable({			styles = { width = "100%" },			rows = {				{ 					{ 						header = true, 						content = "Expected", 						styles = { width = "1em"}, -- "shrink-wraps" this column					}, 					{ content = expectedOutput },				},				{					{ header = true, content = "Actual" }, 					{ content = formattedOutput },				},			}		}) end return outputData, resultData, statusData end

function h.formatValue(val) if type(val) == "string" then return utilsMarkup.pre(string.gsub(val, "\n", "\\n\n")) -- Show newlines end return utilsMarkup.lua(val) end

function h.printStatus(success) local img = success and "" or "" local msg = success and s("explainStatusGood") or s("explainStatusBad") img = utilsMarkup.explain(msg)(img) local cat = success and "" or utilsMarkup.category(s("failingTestsCategory")) return img .. cat end

i18n.loadStrings({	en = {		noDocumentationProperty = "No `Documentation` property exists in export table of %s",		failingTestsCategory = "Category:Pages with failing tests",		explainStatusColumn = "Indicates whether a feature is working as expected",		explainStatusGood = "This feature is working as expected",		explainStatusBad = "This feature is not working as expected",		headers = {			parameters = "Parameters",			returns = "Returns",			examples = "Examples",			input = "Input",			output = "Output",			result = "Result",			categories = "Categories",			categoriesAdded = "Categories added",			status = "Status",		}	} })

return p