Difference between revisions of "Module:For loop/sandbox"
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blackwiki>Mr. Stradivarius (Undid revision 591216041 by Mr. Stradivarius (talk) ah, sorry, documentation diff link is broken for sandboxes) |
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− | + | -- This module implements {{for loop}}. | |
− | + | ||
− | local | + | local getArgs = require('Module:Arguments').getArgs |
− | + | local yesno = require('Module:Yesno') | |
− | local function | + | local p = {} |
− | + | ||
+ | function p.main(frame) | ||
+ | local args = getArgs(frame, { | ||
+ | trim = false, | ||
+ | removeBlanks = false | ||
+ | }) | ||
+ | return p._main(args) | ||
end | end | ||
− | + | ||
− | local | + | function p._main(args) |
− | + | local template = args['call'] or 'void' | |
− | + | local calltemplates = yesno(args.substall or "", true) or not mw.isSubsting() | |
− | + | local variableParam = args.pv | |
− | + | variableParam = tonumber(variableParam) or variableParam or 1 -- fix for positional parameters | |
− | + | local variableValPrefix = args.prefix or '' | |
− | + | local variableValPostfix = args.postfix or '' | |
− | + | local sep = args[1] or '' | |
− | + | local constantArgs = p.getConstants(args) | |
− | + | local variableVals = p.getVariableVals(args) | |
+ | |||
+ | local result = '' | ||
+ | local addSeparator = false; | ||
+ | for _, v in ipairs(variableVals) do | ||
+ | v = mw.text.trim(v) | ||
+ | if #v > 0 or not yesno(args.skipBlanks) then | ||
+ | if addSeparator then | ||
+ | result = result .. sep | ||
+ | end | ||
+ | addSeparator = true; | ||
+ | local targs = constantArgs | ||
+ | targs[variableParam] = variableValPrefix .. v .. variableValPostfix | ||
+ | if calltemplates then | ||
+ | local output = p.callTemplate(template, targs) | ||
+ | if #mw.text.trim(output) == 0 then | ||
+ | addSeparator = false | ||
+ | end | ||
+ | result = result .. output | ||
+ | else | ||
+ | local makeTemplate = require('Module:Template invocation').invocation | ||
+ | result = result .. makeTemplate(template, targs) | ||
+ | end | ||
+ | end | ||
+ | end | ||
+ | return result | ||
end | end | ||
− | + | ||
− | + | function p.getConstants(args) | |
− | + | local constantArgNums = p.getArgNums(args, 'pc', 'n') | |
− | + | local constantArgs = {} | |
− | + | for _, num in ipairs(constantArgNums) do | |
− | + | local keyArg = 'pc' .. tostring(num) .. 'n' | |
− | + | local valArg = 'pc' .. tostring(num) .. 'v' | |
− | + | local key = args[keyArg] | |
− | + | key = tonumber(key) or key | |
− | + | local value = args[valArg] | |
+ | constantArgs[key] = value | ||
+ | end | ||
+ | return constantArgs | ||
end | end | ||
− | + | ||
− | + | function p.getVariableVals(args) | |
− | + | local variableVals = {} | |
− | + | if args.start or args.stop or args.by then | |
− | + | if args[2] then | |
− | + | error("Both start/stop/by and numbered parameters specified") | |
− | + | end | |
− | + | local start = tonumber(args.start or 1) | |
− | + | local stop = tonumber(args.stop or 1) | |
+ | local by = tonumber(args.by or 1) | ||
+ | for i = start, stop, by do | ||
+ | variableVals [#variableVals + 1] = i | ||
+ | end | ||
+ | else | ||
+ | for i, v in ipairs(args) do | ||
+ | if i ~= 1 then | ||
+ | variableVals[i - 1] = v | ||
+ | end | ||
+ | end | ||
+ | end | ||
+ | return variableVals | ||
end | end | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | + | function p.getArgNums(args, prefix, suffix) | |
− | + | -- Returns a table containing the numbers of the arguments that exist | |
− | + | -- for the specified prefix and suffix. | |
− | + | local nums = {} | |
− | + | local pattern = '^' .. prefix .. '([1-9]%d*)' .. suffix .. '$' | |
− | + | for k, _ in pairs(args) do | |
− | + | local num = tostring(k):match(pattern) | |
− | + | if num then | |
− | + | nums[#nums + 1] = tonumber(num) | |
− | + | end | |
− | + | end | |
− | + | table.sort(nums) | |
− | + | return nums | |
end | end | ||
− | + | ||
− | function p. | + | function p.callTemplate(template, targs) |
− | + | return mw.getCurrentFrame():expandTemplate{title = template, args = targs} | |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
end | end | ||
− | + | ||
return p | return p |
Latest revision as of 16:40, 26 September 2020
Documentation for this module may be created at Module:For loop/sandbox/doc
-- This module implements {{for loop}}.
local getArgs = require('Module:Arguments').getArgs
local yesno = require('Module:Yesno')
local p = {}
function p.main(frame)
local args = getArgs(frame, {
trim = false,
removeBlanks = false
})
return p._main(args)
end
function p._main(args)
local template = args['call'] or 'void'
local calltemplates = yesno(args.substall or "", true) or not mw.isSubsting()
local variableParam = args.pv
variableParam = tonumber(variableParam) or variableParam or 1 -- fix for positional parameters
local variableValPrefix = args.prefix or ''
local variableValPostfix = args.postfix or ''
local sep = args[1] or ''
local constantArgs = p.getConstants(args)
local variableVals = p.getVariableVals(args)
local result = ''
local addSeparator = false;
for _, v in ipairs(variableVals) do
v = mw.text.trim(v)
if #v > 0 or not yesno(args.skipBlanks) then
if addSeparator then
result = result .. sep
end
addSeparator = true;
local targs = constantArgs
targs[variableParam] = variableValPrefix .. v .. variableValPostfix
if calltemplates then
local output = p.callTemplate(template, targs)
if #mw.text.trim(output) == 0 then
addSeparator = false
end
result = result .. output
else
local makeTemplate = require('Module:Template invocation').invocation
result = result .. makeTemplate(template, targs)
end
end
end
return result
end
function p.getConstants(args)
local constantArgNums = p.getArgNums(args, 'pc', 'n')
local constantArgs = {}
for _, num in ipairs(constantArgNums) do
local keyArg = 'pc' .. tostring(num) .. 'n'
local valArg = 'pc' .. tostring(num) .. 'v'
local key = args[keyArg]
key = tonumber(key) or key
local value = args[valArg]
constantArgs[key] = value
end
return constantArgs
end
function p.getVariableVals(args)
local variableVals = {}
if args.start or args.stop or args.by then
if args[2] then
error("Both start/stop/by and numbered parameters specified")
end
local start = tonumber(args.start or 1)
local stop = tonumber(args.stop or 1)
local by = tonumber(args.by or 1)
for i = start, stop, by do
variableVals [#variableVals + 1] = i
end
else
for i, v in ipairs(args) do
if i ~= 1 then
variableVals[i - 1] = v
end
end
end
return variableVals
end
function p.getArgNums(args, prefix, suffix)
-- Returns a table containing the numbers of the arguments that exist
-- for the specified prefix and suffix.
local nums = {}
local pattern = '^' .. prefix .. '([1-9]%d*)' .. suffix .. '$'
for k, _ in pairs(args) do
local num = tostring(k):match(pattern)
if num then
nums[#nums + 1] = tonumber(num)
end
end
table.sort(nums)
return nums
end
function p.callTemplate(template, targs)
return mw.getCurrentFrame():expandTemplate{title = template, args = targs}
end
return p