Module:LuaCall
Documentation for this module may be created at Module:LuaCall/doc
local p={}
function p.main(frame)
local parent=frame.getParent(frame) or {}
local reserved_value={}
local reserved_function,reserved_contents
for k,v in pairs(parent.args or {}) do
--if tonumber(v) then v=tonumber(v) end
_G[k]=tonumber(v) or v -- transfer every parameter directly to the global variable table
-- debuglog=debuglog..k.."="..v.."</nowiki><br /><nowiki>"
end
for k,v in pairs(frame.args or {}) do
--if tonumber(v) then v=tonumber(v) end
_G[k]=tonumber(v) or v -- transfer every parameter directly to the global variable table
end
--- Alas Scribunto does NOT implement coroutines, according to
--- http://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual#string.format
--- this will not stop us from trying to implement one single lousy function call
if _G[1] then
reserved_function,reserved_contents=mw.ustring.match(_G[1],"^%s*(%a[^%s%(]*)%(([^%)]*)%)%s*$")
end
if reserved_contents then
local reserved_counter=0
repeat
reserved_counter=reserved_counter+1
reserved_value[reserved_counter]=_G[mw.ustring.match(reserved_contents,"([^%,]+)")]
reserved_contents=mw.ustring.match(reserved_contents,"[^%,]+,(.*)$")
until not reserved_contents
end
local reserved_arraypart=_G
while mw.ustring.match(reserved_function,"%.") do
reserved_functionpart,reserved_function=mw.ustring.match(reserved_function,"^(%a[^%.]*)%.(.*)$")
reserved_arraypart=reserved_arraypart[reserved_functionpart]
end
local reserved_call=reserved_arraypart[reserved_function]
if type(reserved_call)~="function" then
return tostring(reserved_call)
elseif reserved_debug or not reserved_function then return mw.text.nowiki(debuglog)
else reserved_output={reserved_call(unpack(reserved_value))}
return reserved_output[reserved_return or 1]
end
end
-- This function is modified from https://en.wikipedia.org/wiki/Module:Ustring?oldid=885619921
-- All frame's arguments are coerced as number type if possible. If you wish for something to remain a string, you can simply escape it by insert \ at the beginning of the string.
function p.import(o)
local p = {}
for k, v in pairs(o) do if type(v)~='function' then p[k]=v else
p[k] = function(frame)
--local args = {}
--for _, v in ipairs(frame.args) do
-- --table.insert(args, tonumber(v) or v:gsub("^\\", "", 1))
-- table.insert(args, tonumberOrString(v))
--end
--return (v(unpack(args)))
return (v(unpack(
tonumberOrStringOnPairs(ipairs(frame.args))
)))
end
end
end
return p
end
-- ipairsAt()/ipairsAtOffset() will be proposed to be placed in [[Module:TableTools]]
--[[
------------------------------------------------------------------------------------
-- ipairsAt
--
-- This is an iterator for arrays. It can be used like ipairs, but with
-- specified i as first index to iterate.
--
-- for i,v in p.ipairsAt(t, 3) do body end
--
-- will iterate over the pairs (3,t[3]),(4,t[4]),..., up to the first
-- integer key absent from the table.
--
-- Note: The following is an example to do range iteration from 3 to j
--
-- for i,v in p.ipairsAt(t, 3) do if i>j then break end; body end
--
------------------------------------------------------------------------------------
--]]
local function ipairsAt(t, i)
--return ipairsAtOffset(t, i-1)
-- This may be less overhead than return ipairsAtOffset() above
local f, s, i0 = ipairs(t)
return f, s, i0+i-1
end
--[[
------------------------------------------------------------------------------------
-- ipairsAtOffset
--
-- Like ipairsAt(), except that it treat argument i as offset from 1
--
------------------------------------------------------------------------------------
--]]
local function ipairsAtOffset(t, i)
local f, s, i0 = ipairs(t)
return f, s, i0+i
end
local function iIteratorsAtOffset(t, i)
local f, s, i0 = ipairs(t)
return function (s, i)
local i, v = f(s, i); return v
end, s, i0+i
end
-- like ipairs() except that it return only value, rather than key/value pair
-- on each iteration
local function iIterators(t) return iIteratorsAtOffset(t, 0) end
local function tonumberOrString(v)
return tonumber(v) or v:gsub("^\\", "", 1)
end
local function tonumberOrStringOnPairs(f, s, i)
local args = {}
for _, v in f, s, i do
--table.insert(args, tonumber(v) or v:gsub("^\\", "", 1))
table.insert(args, tonumberOrString(v))
end
return args
end
local function get(s)
local G = _G; for _ in mw.text.gsplit(
mw.text.trim(s, '%s'), '%s*%.%s*'
) do
G = G[_]
end
return G
end
--[[
------------------------------------------------------------------------------------
-- call
--
-- Example:
-- {{#invoke:LuaCall|call|mw.log|a|1|2|3}} will return results of mw.log('a', 1, 2, 3)
-- {{#invoke:LuaCall|call|mw.logObject|a|321}} will return results of mw.logObject('a', 321)
--
------------------------------------------------------------------------------------
--]]
function p.call(frame)
--local f = mw.text.trim(frame.args[1], '%s')
--local args = {}
--for _, v in ipairsAtOffset(frame.args, 1) do
-- --table.insert(args, tonumber(v) or v:gsub("^\\", "", 1))
-- table.insert(args, tonumberOrString(v))
--end
local args = tonumberOrStringOnPairs(ipairsAtOffset(frame.args, 1))
--local G = _G
--for _ in mw.text.gsplit(
-- mw.text.trim(frame.args[1], '%s'), '%s*%.%s*'
--) do
-- G = G[_]
--end
return (get(frame.args[1])(unpack(args)))
end
local TableTools = require('Module:TableTools')
--[[
------------------------------------------------------------------------------------
-- get
--
-- Example:
-- {{#invoke:LuaCall|get| math.pi }} will return value of math.pi
-- {{#invoke:LuaCall|get|math|pi}} will return value of math.pi
-- {{#invoke:LuaCall|get| math |pi}} will return value of _G[' math '].pi
-- {{#invoke:LuaCall|get|_G| math.pi }} will return value of _G[' math.pi ']
-- {{#invoke:LuaCall|get|obj.a.5.c}} will return value of obj.a['5'].c
-- {{#invoke:LuaCall|get|obj|a|5|c}} will return value of obj.a[5].c
--
------------------------------------------------------------------------------------
--]]
function p.get(frame)
-- #frame.args always return 0, regardless of number of unnamed
-- template parameters, so use length() instead
if TableTools.length(frame.args) == 1 then
-- not do tonumber() for this args style,
-- always treat it as string,
-- so 'obj.1' will mean obj['1'] rather obj[1]
--local G = _G; for _ in mw.text.gsplit(
-- mw.text.trim(frame.args[1], '%s'), '%s*%.%s*'
--) do
-- G = G[_]
--end
--return G
return get(frame.args[1])
else
--local args = {}
local G = _G
for _, v in ipairs(frame.args) do
--table.insert(args, tonumber(v) or v:gsub("^\\", "", 1))
--G = G[tonumber(v) or v:gsub("^\\", "", 1)]
G = G[tonumberOrString(v)]
end
--local G = _G; for _, v in ipairs(args) do
-- G = G[v]
--end
return G
end
end
return p