Module:LuaCall
From CryptoWiki
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 _G[k]=tonumber(v) or v -- transfer every parameter directly to the global variable table end for k,v in pairs(frame.args or {}) do _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) else reserved_output={reserved_call(unpack(reserved_value))} return reserved_output[reserved_return or 1] end end local function tonumberOrString(v) return tonumber(v) or v:gsub("^\\", "", 1) end local function callWithTonumberOrStringOnPairs(f, ...) local args = {} for _, v in ... do table.insert(args, tonumberOrString(v)) end return (f(unpack(args))) end --[[ ------------------------------------------------------------------------------------ -- ipairsAtOffset -- This is an iterator for arrays. It can be used like ipairs, but with -- specified i as first index to iterate. i is an offset from 1 -- ------------------------------------------------------------------------------------ --]] local function ipairsAtOffset(t, i) local f, s, i0 = ipairs(t) return f, s, i0+i 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 -- -- This function is usually useful for debugging template parameters. -- Prefix parameter with backslash (\) to force interpreting parameter as string. -- The leading backslash will be removed before passed to Lua function. -- -- 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|\321| \321 }} will return results of mw.logObject('a', 321, '321', ' \\321 ') -- -- This example show the debugging to see which Unicode characters are allowed in template parameters, -- {{#invoke:LuaCall|call|mw.ustring.codepoint|{{#invoke:LuaCall|call|mw.ustring.char|0x0061}}}} return 97 -- {{#invoke:LuaCall|call|mw.ustring.codepoint|{{#invoke:LuaCall|call|mw.ustring.char|0x0000}}}} return 65533 -- {{#invoke:LuaCall|call|mw.ustring.codepoint|{{#invoke:LuaCall|call|mw.ustring.char|0x0001}}}} return 65533 -- {{#invoke:LuaCall|call|string.format|0x%04x|{{#invoke:LuaCall|call|mw.ustring.codepoint|{{#invoke:LuaCall|call|mw.ustring.char|0x0002}}}}}} return 0xfffd -- {{#invoke:LuaCall|call|string.format|0x%04x|{{#invoke:LuaCall|call|mw.ustring.codepoint|{{#invoke:LuaCall|call|mw.ustring.char|0x007e}}}}}} return 0x007e -- {{#invoke:LuaCall|call|string.format|0x%04x|{{#invoke:LuaCall|call|mw.ustring.codepoint|{{#invoke:LuaCall|call|mw.ustring.char|0x007f}}}}}} return 0x007f -- {{#invoke:LuaCall|call|string.format|0x%04x|{{#invoke:LuaCall|call|mw.ustring.codepoint|{{#invoke:LuaCall|call|mw.ustring.char|0x0080}}}}}} return 0x0080 -- {{#invoke:LuaCall|call|string.format|0x%04x|{{#invoke:LuaCall|call|mw.ustring.codepoint|{{#invoke:LuaCall|call|mw.ustring.char|0x00a0}}}}}} return 0x00a0 -- ------------------------------------------------------------------------------------ --]] function p.call(frame) return callWithTonumberOrStringOnPairs(get(frame.args[1]), ipairsAtOffset(frame.args, 1) ) 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 check manually instead if frame.args[2] == nil then -- not do tonumber() for this args style, -- always treat it as string, -- so 'obj.1' will mean obj['1'] rather obj[1] return get(frame.args[1]) else local G = _G for _, v in ipairs(frame.args) do G = G[tonumberOrString(v)] end return G end end --[[ ------------------------------------------------------------------------------------ -- invoke -- -- This function is used by Template:Invoke -- ------------------------------------------------------------------------------------ --]] function p.invoke(frame) local pframe, usedpargs = frame:getParent(), {} -- get module and function names from parent args if not provided local pfargs = setmetatable({frame.args[1], frame.args[2]}, {__index = table}) if not pfargs[1] then pfargs[1], usedpargs[1] = pframe.args[1], true if not pfargs[2] then pfargs[2], usedpargs[2] = pframe.args[2], true end else if not pfargs[2] then pfargs[2], usedpargs[1] = pframe.args[1], true end end -- repack sequential args for i, v in ipairs(pframe.args) do if not usedpargs[i] then pfargs:insert(v) usedpargs[i] = true end end -- copy other args for k, v in pairs(pframe.args) do if not pfargs[k] and not usedpargs[k] then pfargs[k], usedpargs[k] = v, true end end -- #invoke off parent frame so the new frame has the same parent return pframe:callParserFunction{name = '#invoke', args = pfargs} end return p