local function pack(...)
return {...}, select('#', ...)
end
local function mapArray(func, array, count)
local result = {}
for i = 1, count or #array do
result[i] = func(array[i])
end
return result
end
local function quote(value)
if type(value) == 'string' then
return (string.gsub(string.format('%q', value), '\\\n', '\\n')) -- Outer parentheses remove second value returned by gsub
end
local str = tostring(value)
if type(value) == 'table' and str ~= 'table' then
return '{' .. str .. '}'
end
return str
end
local function callAssert(func, funcName, ...)
local result, resultCount = pack(func(...))
if not result[1] then
local args, argsCount = pack(...)
args = mapArray(quote, args, argsCount)
local message = mw.ustring.format(
'%s(%s) failed',
funcName,
table.concat(args, ', ')
)
error(message, 2)
end
return unpack(result, 1, resultCount)
end
return callAssert
