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모듈:Arguments(비교)

 r4 vs r5
-'''윤석열지지 사이트 디시인사이드 2중대알파위키 더시드위키 윤석열 지지위키 일베 국짐당들 개같이 멸망 윤짜장 탄핵의 그날까지jsk1124 열사 만세'''
+-- This module provides easy processing of arguments passed to Scribunto from
+-- #invoke. It is intended for use by other Lua modules, and should not be
+-- called from #invoke directly.
+-- [invoke(모듈 이름)]
+local libraryUtil = require('libraryUtil')
+local checkType = libraryUtil.checkType
+local arguments = {}
+-- Generate four different tidyVal functions, so that we don't have to check the
+-- options every time we call it.
+local function tidyValDefault(key, val)
+	if type(val) == 'string' then
+		val = val:match('^%s*(.-)%s*$')
+		if val == '' then
+			return nil
+		else
+			return val
+		end
+	else
+		return val
+	end
+end
+local function tidyValTrimOnly(key, val)
+	if type(val) == 'string' then
+		return val:match('^%s*(.-)%s*$')
+	else
+		return val
+	end
+end
+local function tidyValRemoveBlanksOnly(key, val)
+	if type(val) == 'string' then
+		if val:find('%S') then
+			return val
+		else
+			return nil
+		end
+	else
+		return val
+	end
+end
+local function tidyValNoChange(key, val)
+	return val
+end
+local function matchesTitle(given, title)
+	local tp = type( given )
+	return (tp == 'string' or tp == 'number') and mw.title.new( given ).prefixedText == title
+end
+local translate_mt = { __index = function(t, k) return k end }
+function arguments.getArgs(frame, options)
+	checkType('getArgs', 1, frame, 'table', true)
+	checkType('getArgs', 2, options, 'table', true)
+	frame = frame or {}
+	options = options or {}
+	--[[
+	-- Set up argument translation.
+	--]]
+	options.translate = options.translate or {}
+	if getmetatable(options.translate) == nil then
+		setmetatable(options.translate, translate_mt)
+	end
+	if options.backtranslate == nil then
+		options.backtranslate = {}
+		for k,v in pairs(options.translate) do
+			options.backtranslate[v] = k
+		end
+	end
+	if options.backtranslate and getmetatable(options.backtranslate) == nil then
+		setmetatable(options.backtranslate, {
+			__index = function(t, k)
+				if options.translate[k] ~= k then
+					return nil
+				else
+					return k
+				end
+			end
+		})
+	end
+	--[[
+	-- Get the argument tables. If we were passed a valid frame object, get the
+	-- frame arguments (fargs) and the parent frame arguments (pargs), depending
+	-- on the options set and on the parent frame's availability. If we weren't
+	-- passed a valid frame object, we are being called from another Lua module
+	-- or from the debug console, so assume that we were passed a table of args
+	-- directly, and assign it to a new variable (luaArgs).
+	--]]
+	local fargs, pargs, luaArgs
+	if type(frame.args) == 'table' and type(frame.getParent) == 'function' then
+		if options.wrappers then
+			--[[
+			-- The wrappers option makes Module:Arguments look up arguments in
+			-- either the frame argument table or the parent argument table, but
+			-- not both. This means that users can use either the #invoke syntax
+			-- or a wrapper template without the loss of performance associated
+			-- with looking arguments up in both the frame and the parent frame.
+			-- Module:Arguments will look up arguments in the parent frame
+			-- if it finds the parent frame's title in options.wrapper;
+			-- otherwise it will look up arguments in the frame object passed
+			-- to getArgs.
+			--]]
+			local parent = frame:getParent()
+			if not parent then
+				fargs = frame.args
+			else
+				local title = parent:getTitle():gsub('/sandbox$', '')
+				local found = false
+				if matchesTitle(options.wrappers, title) then
+					found = true
+				elseif type(options.wrappers) == 'table' then
+					for _,v in pairs(options.wrappers) do
+						if matchesTitle(v, title) then
+							found = true
+							break
+						end
+					end
+				end
+				-- We test for false specifically here so that nil (the default) acts like true.
+				if found or options.frameOnly == false then
+					pargs = parent.args
+				end
+				if not found or options.parentOnly == false then
+					fargs = frame.args
+				end
+			end
+		else
+			-- options.wrapper isn't set, so check the other options.
+			if not options.parentOnly then
+				fargs = frame.args
+			end
+			if not options.frameOnly then
+				local parent = frame:getParent()
+				pargs = parent and parent.args or nil
+			end
+		end
+		if options.parentFirst then
+			fargs, pargs = pargs, fargs
+		end
+	else
+		luaArgs = frame
+	end
+	-- Set the order of precedence of the argument tables. If the variables are
+	-- nil, nothing will be added to the table, which is how we avoid clashes
+	-- between the frame/parent args and the Lua args.
+	local argTables = {fargs}
+	argTables[#argTables + 1] = pargs
+	argTables[#argTables + 1] = luaArgs
+	--[[
+	-- Generate the tidyVal function. If it has been specified by the user, we
+	-- use that; if not, we choose one of four functions depending on the
+	-- options chosen. This is so that we don't have to call the options table
+	-- every time the function is called.
+	--]]
+	local tidyVal = options.valueFunc
+	if tidyVal then
+		if type(tidyVal) ~= 'function' then
+			error(
+				"bad value assigned to option 'valueFunc'"
+					.. '(function expected, got '
+					.. type(tidyVal)
+					.. ')',
+			)
+		end
+	elseif options.trim ~= false then
+		if options.removeBlanks ~= false then
+			tidyVal = tidyValDefault
+		else
+			tidyVal = tidyValTrimOnly
+		end
+	else
+		if options.removeBlanks ~= false then
+			tidyVal = tidyValRemoveBlanksOnly
+		else
+			tidyVal = tidyValNoChange
+		end
+	end
+	--[[
+	-- Set up the args, metaArgs and nilArgs tables. args will be the one
+	-- accessed from functions, and metaArgs will hold the actual arguments. Nil
+	-- arguments are memoized in nilArgs, and the metatable connects all of them
+	-- together.
+	--]]
+	local args, metaArgs, nilArgs, metatable = {}, {}, {}, {}
+	setmetatable(args, metatable)
+	local function mergeArgs(tables)
+		--[[
+		-- Accepts multiple tables as input and merges their keys and values
+		-- into one table. If a value is already present it is not overwritten;
+		-- tables listed earlier have precedence. We are also memoizing nil
+		-- values, which can be overwritten if they are 's' (soft).
+		--]]
+		for _, t in ipairs(tables) do
+			for key, val in pairs(t) do
+				if metaArgs[key] == nil and nilArgs[key] ~= 'h' then
+					local tidiedVal = tidyVal(key, val)
+					if tidiedVal == nil then
+						nilArgs[key] = 's'
+					else
+						metaArgs[key] = tidiedVal
+					end
+				end
+			end
+		end
+	end
+	--[[
+	-- Define metatable behaviour. Arguments are memoized in the metaArgs table,
+	-- and are only fetched from the argument tables once. Fetching arguments
+	-- from the argument tables is the most resource-intensive step in this
+	-- module, so we try and avoid it where possible. For this reason, nil
+	-- arguments are also memoized, in the nilArgs table. Also, we keep a record
+	-- in the metatable of when pairs and ipairs have been called, so we do not
+	-- run pairs and ipairs on the argument tables more than once. We also do
+	-- not run ipairs on fargs and pargs if pairs has already been run, as all
+	-- the arguments will already have been copied over.
+	--]]
+	metatable.__index = function (t, key)
+		--[[
+		-- Fetches an argument when the args table is indexed. First we check
+		-- to see if the value is memoized, and if not we try and fetch it from
+		-- the argument tables. When we check memoization, we need to check
+		-- metaArgs before nilArgs, as both can be non-nil at the same time.
+		-- If the argument is not present in metaArgs, we also check whether
+		-- pairs has been run yet. If pairs has already been run, we return nil.
+		-- This is because all the arguments will have already been copied into
+		-- metaArgs by the mergeArgs function, meaning that any other arguments
+		-- must be nil.
+		--]]
+		if type(key) == 'string' then
+			key = options.translate[key]
+		end
+		local val = metaArgs[key]
+		if val ~= nil then
+			return val
+		elseif metatable.donePairs or nilArgs[key] then
+			return nil
+		end
+		for _, argTable in ipairs(argTables) do
+			local argTableVal = tidyVal(key, argTable[key])
+			if argTableVal ~= nil then
+				metaArgs[key] = argTableVal
+				return argTableVal
+			end
+		end
+		nilArgs[key] = 'h'
+		return nil
+	end
+	metatable.__newindex = function (t, key, val)
+		-- This function is called when a module tries to add a new value to the
+		-- args table, or tries to change an existing value.
+		if type(key) == 'string' then
+			key = options.translate[key]
+		end
+		if options.readOnly then
+			error(
+				'could not write to argument table key "'
+					.. tostring(key)
+					.. '"; the table is read-only',
+			)
+		elseif options.noOverwrite and args[key] ~= nil then
+			error(
+				'could not write to argument table key "'
+					.. tostring(key)
+					.. '"; overwriting existing arguments is not permitted',
+			)
+		elseif val == nil then
+			--[[
+			-- If the argument is to be overwritten with nil, we need to erase
+			-- the value in metaArgs, so that __index, __pairs and __ipairs do
+			-- not use a previous existing value, if present; and we also need
+			-- to memoize the nil in nilArgs, so that the value isn't looked
+			-- up in the argument tables if it is accessed again.
+			--]]
+			metaArgs[key] = nil
+			nilArgs[key] = 'h'
+		else
+			metaArgs[key] = val
+		end
+	end
+	local function translatenext(invariant)
+		local k, v = next(invariant.t, invariant.k)
+		invariant.k = k
+		if k == nil then
+			return nil
+		elseif type(k) ~= 'string' or not options.backtranslate then
+			return k, v
+		else
+			local backtranslate = options.backtranslate[k]
+			if backtranslate == nil then
+				-- Skip this one. This is a tail call, so this won't cause stack overflow
+				return translatenext(invariant)
+			else
+				return backtranslate, v
+			end
+		end
+	end
+	metatable.__pairs = function ()
+		-- Called when pairs is run on the args table.
+		if not metatable.donePairs then
+			mergeArgs(argTables)
+			metatable.donePairs = true
+		end
+		return translatenext, { t = metaArgs }
+	end
+	local function inext(t, i)
+		-- This uses our __index metamethod
+		local v = t[i + 1]
+		if v ~= nil then
+			return i + 1, v
+		end
+	end
+	metatable.__ipairs = function (t)
+		-- Called when ipairs is run on the args table.
+		return inext, t, 0
+	end
+	return args
+end
+return arguments
+[[분류:루아]]