View source for Module:require when needed

You do not have permission to edit this page, for the following reasons:

This page has been locked to prevent editing. You may be able to edit this module's sandbox. You can recommend any additions or changes to this page on its talkpage, if the latter is not similarly locked, or at the Information Desk. Please note that talk pages of modules are not often watched. If you have an edit request for a module, please post it to a new topic at the Grease pit.
Your IP address is in a range that has been blocked on all Wikimedia Foundation wikis. The block was made by ‪Superpes15‬. The reason given is No open proxies .
- Start of block: 11:40, 10 February 2024
- Expiry of block: 11:40, 10 February 2026
Your current IP address is 142.171.178.55. The blocked range is 142.171.0.0/16. Please include all above details in any queries you make. If you believe you were blocked by mistake, you can find additional information and instructions in the No open proxies global policy. Otherwise, to discuss the block please post a request for review on Meta-Wiki. You could also send an email to the stewards VRT queue at stewards@wikimedia.org including all above details.

You can view and copy the source of this page.

local getmetatable = getmetatable
local ipairs = ipairs
local loaded = package.loaded
local pairs = pairs
local require = require
local select = select
local setmetatable = setmetatable
local tostring = tostring
local unpack = unpack

local function get_nested(obj, ...)
	local n = select("#", ...)
	if n == 0 then
		return obj
	end
	obj = obj[...]
	for i = 2, n do
		obj = obj[select(i, ...)]
	end
	return obj
end

local function get_obj(mt)
	local obj = require(mt[1])
	if #mt > 1 then
		obj = get_nested(obj, unpack(mt, 2))
	end
	mt[0] = obj
	return obj
end

local function __call(self, ...)
	local mt = getmetatable(self)
	local obj = mt[0]
	if obj == nil then
		obj = get_obj(mt)
	end
	return obj(...)
end

local function __index(self, k)
	local mt = getmetatable(self)
	local obj = mt[0]
	if obj == nil then
		obj = get_obj(mt)
	end
	return obj[k]
end

local function __ipairs(self)
	local mt = getmetatable(self)
	local obj = mt[0]
	if obj == nil then
		obj = get_obj(mt)
	end
	return ipairs(obj)
end

local function __newindex(self, k, v)
	local mt = getmetatable(self)
	local obj = mt[0]
	if obj == nil then
		obj = get_obj(mt)
	end
	obj[k] = v
end

local function __pairs(self)
	local mt = getmetatable(self)
	local obj = mt[0]
	if obj == nil then
		obj = get_obj(mt)
	end
	return pairs(obj)
end

local function __tostring(self)
	local mt = getmetatable(self)
	local obj = mt[0]
	if obj == nil then
		obj = get_obj(mt)
	end
	return tostring(obj)
end

return function(modname, ...)
	local mod = loaded[modname]
	if mod ~= nil then
		return get_nested(mod, ...)
	end
	return setmetatable({}, {
		modname,
		__call = __call,
		__index = __index,
		__ipairs = __ipairs,
		__newindex = __newindex,
		__pairs = __pairs,
		__tostring = __tostring,
		-- TODO: other metamethods, if needed.
		...
	})
end

Templates used on this page:

Template:code (view source) (template editor protected)
Template:documentation (view source) (template editor protected)
Template:module cat (edit)
Module:array (view source) (template editor protected)
Module:code (view source) (template editor protected)
Module:data/magic words (view source) (template editor protected)
Module:data/metamethods (view source) (template editor protected)
Module:data/parser extension tags (view source) (template editor protected)
Module:documentation (view source) (semi-protected)
Module:fun (view source) (template editor protected)
Module:module categorization (view source) (semi-protected)
Module:pages (view source) (template editor protected)
Module:parameters (view source) (template editor protected)
Module:parser (view source) (template editor protected)
Module:require when needed (view source) (template editor protected)
Module:require when needed/documentation (edit)
Module:string utilities (view source) (template editor protected)
Module:template parser (view source) (template editor protected)
Module:template parser/data (view source) (template editor protected)
Module:yesno (view source) (template editor protected)

Return to Module:require when needed.

Retrieved from "https://en.wiktionary.org/wiki/Module:require_when_needed"

View source for Module:require when needed

Navigation menu

Search