Module:Parameter names example

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\( \newcommand{\P}[]{\unicode{xB6}} \newcommand{\AA}[]{\unicode{x212B}} \newcommand{\empty}[]{\emptyset} \newcommand{\O}[]{\emptyset} \newcommand{\Alpha}[]{Α} \newcommand{\Beta}[]{Β} \newcommand{\Epsilon}[]{Ε} \newcommand{\Iota}[]{Ι} \newcommand{\Kappa}[]{Κ} \newcommand{\Rho}[]{Ρ} \newcommand{\Tau}[]{Τ} \newcommand{\Zeta}[]{Ζ} \newcommand{\Mu}[]{\unicode{x039C}} \newcommand{\Chi}[]{Χ} \newcommand{\Eta}[]{\unicode{x0397}} \newcommand{\Nu}[]{\unicode{x039D}} \newcommand{\Omicron}[]{\unicode{x039F}} \DeclareMathOperator{\sgn}{sgn} \def\oiint{\mathop{\vcenter{\mathchoice{\huge\unicode{x222F}\,}{\unicode{x222F}}{\unicode{x222F}}{\unicode{x222F}}}\,}\nolimits} \def\oiiint{\mathop{\vcenter{\mathchoice{\huge\unicode{x2230}\,}{\unicode{x2230}}{\unicode{x2230}}{\unicode{x2230}}}\,}\nolimits} \)

Documentation for this module may be created at Module:Parameter names example/doc

-- This module implements {{parameter names example}}.

local p = {}

local function makeParam(s)
	local lb = '{'
	local rb = '}'
	return lb:rep(3) .. s .. rb:rep(3)
end

local function italicize(s)
	return "''" .. s .. "''"
end

local function plain(s)
	return s
end

function p._main(args, frame)
	-- Find how we want to format the arguments to the template.
	local formatFunc
	if args._display == 'italics' or args._display == 'italic' then
		formatFunc = italicize
	elseif args._display == 'plain' then
		formatFunc = plain
	else
		formatFunc = makeParam
	end

	-- Build the table of template arguments.
	local targs = {}
	for k, v in pairs(args) do
		if type(k) == 'number' then
			targs[v] = formatFunc(v)
		elseif not k:find('^_') then
			targs[k] = v
		end
	end

	-- Find the template name.
	local template
	if args._template then
		template = args._template
	else
		local currentTitle = mw.title.getCurrentTitle()
		if currentTitle.prefixedText:find('/sandbox$') then
			template = currentTitle.prefixedText
		else
			template = currentTitle.basePageTitle.prefixedText
		end
	end

	-- Call the template with the arguments.
	frame = frame or mw.getCurrentFrame()
	local success, result = pcall(
		frame.expandTemplate,
		frame,
		{title = template, args = targs}
	)
	if success then
		return result
	else
		return ''
	end
end

function p.main(frame)
	local args = require('Module:Arguments').getArgs(frame, {
		wrappers = 'Template:Parameter names example'
	})
	return p._main(args, frame)
end

return p