-- LibStub is a simple versioning stub meant for use in Libraries. http://www.wowace.com/wiki/LibStub for more info -- LibStub is hereby placed in the Public Domain Credits: Kaelten, Cladhaire, ckknight, Mikk, Ammo, Nevcairiel, joshborke local LIBSTUB_MAJOR, LIBSTUB_MINOR = "LibStub", 2 -- NEVER MAKE THIS AN SVN REVISION! IT NEEDS TO BE USABLE IN ALL REPOS! local LibStub = _G[LIBSTUB_MAJOR] if not LibStub or LibStub.minor < LIBSTUB_MINOR then LibStub = LibStub or {libs = {}, minors = {} } _G[LIBSTUB_MAJOR] = LibStub LibStub.minor = LIBSTUB_MINOR function LibStub:NewLibrary(major, minor) assert(type(major) == "string", "Bad argument #2 to `NewLibrary' (string expected)") minor = assert(tonumber(strmatch(minor, "%d+")), "Minor version must either be a number or contain a number.") local oldminor = self.minors[major] if oldminor and oldminor >= minor then return nil end self.minors[major], self.libs[major] = minor, self.libs[major] or {} return self.libs[major], oldminor end function LibStub:GetLibrary(major, silent) if not self.libs[major] and not silent then error(("Cannot find a library instance of %q."):format(tostring(major)), 2) end return self.libs[major], self.minors[major] end function LibStub:IterateLibraries() return pairs(self.libs) end setmetatable(LibStub, { __call = LibStub.GetLibrary }) end