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
		p[k] = function(frame)
			local args = frame.args
			for _, v in ipairs(args) do
				args[_] = tonumber(v) or v:gsub("^\\", "", 1)
			end
			return (v(unpack(args)))
		end
	end

	return p
end

return p