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1,278 bytes added ,  09:58, 31 March 2017
m
1 revision imported
Line 52: Line 52:  
return (tp == 'string' or tp == 'number') and mw.title.new( given ).prefixedText == title
 
return (tp == 'string' or tp == 'number') and mw.title.new( given ).prefixedText == title
 
end
 
end
 +
 +
local translate_mt = { __index = function(t, k) return k end }
    
function arguments.getArgs(frame, options)
 
function arguments.getArgs(frame, options)
Line 58: Line 60:  
frame = frame or {}
 
frame = frame or {}
 
options = options 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
    
--[[
 
--[[
Line 97: Line 124:  
end
 
end
 
end
 
end
+
 
 
-- We test for false specifically here so that nil (the default) acts like true.
 
-- We test for false specifically here so that nil (the default) acts like true.
 
if found or options.frameOnly == false then
 
if found or options.frameOnly == false then
Line 122: Line 149:  
luaArgs = frame
 
luaArgs = frame
 
end
 
end
+
 
 
-- Set the order of precedence of the argument tables. If the variables are
 
-- 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
 
-- nil, nothing will be added to the table, which is how we avoid clashes
-- between the frame/parent args and the Lua args.
+
-- between the frame/parent args and the Lua args.
 
local argTables = {fargs}
 
local argTables = {fargs}
 
argTables[#argTables + 1] = pargs
 
argTables[#argTables + 1] = pargs
Line 215: Line 242:  
-- must be nil.
 
-- must be nil.
 
--]]
 
--]]
 +
if type(key) == 'string' then
 +
key = options.translate[key]
 +
end
 
local val = metaArgs[key]
 
local val = metaArgs[key]
 
if val ~= nil then
 
if val ~= nil then
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-- This function is called when a module tries to add a new value to the
 
-- This function is called when a module tries to add a new value to the
 
-- args table, or tries to change an existing value.
 
-- args table, or tries to change an existing value.
 +
if type(key) == 'string' then
 +
key = options.translate[key]
 +
end
 
if options.readOnly then
 
if options.readOnly then
 
error(
 
error(
Line 261: Line 294:  
else
 
else
 
metaArgs[key] = val
 
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
 
end
 
end
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metatable.donePairs = true
 
metatable.donePairs = true
 
end
 
end
return pairs(metaArgs)
+
return translatenext, { t = metaArgs }
 
end
 
end
+
 
 
local function inext(t, i)
 
local function inext(t, i)
 
-- This uses our __index metamethod
 
-- This uses our __index metamethod

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