-- Lua50Compat.lua
-- Loaded FIRST (see VanillaGuide.toc) to restore Lua 5.0 table functions that
-- the WoW 3.3.5 / Project Ascension Lua 5.1 runtime has made obsolete.
--
-- table.setn existed in 5.0 to manually hint the array length; in 5.1 the
-- length operator (#) is authoritative and table.setn is a stub that raises
-- "attempt to call a nil value" or "'setn' is obsolete".  Overwrite it with a
-- no-op unconditionally so Ace2 libs (AceOO, AceEvent, AceConsole, AceDebug,
-- AceLibrary, AceDB, Tablet-2.0) can assign the local alias at module load
-- time without erroring.
--
-- table.getn existed in 5.0 as the canonical length function; in 5.1 it was
-- removed (or kept as an error stub on some runtimes).  Replace it with the
-- equivalent # operator.
--
-- table.foreach / table.foreachi were removed in 5.1 as well; guard them in
-- case any lib uses them (none currently do, but safe to shim anyway).

-- Unconditional overwrite -- even if these slots exist they may raise.
table.setn = function() end

table.getn = function(t)
    return #t
end

if not table.foreach then
    table.foreach = function(t, f)
        for k, v in pairs(t) do
            local ret = f(k, v)
            if ret then return ret end
        end
    end
end

if not table.foreachi then
    table.foreachi = function(t, f)
        for i = 1, #t do
            local ret = f(i, t[i])
            if ret then return ret end
        end
    end
end