diff options
Diffstat (limited to 'tex/context/base/luat-ini.lua')
| -rw-r--r-- | tex/context/base/luat-ini.lua | 184 |
1 files changed, 2 insertions, 182 deletions
diff --git a/tex/context/base/luat-ini.lua b/tex/context/base/luat-ini.lua index 587214b93..34e83e7bb 100644 --- a/tex/context/base/luat-ini.lua +++ b/tex/context/base/luat-ini.lua @@ -6,14 +6,6 @@ if not modules then modules = { } end modules ['luat-ini'] = { license = "see context related readme files" } --- rather experimental down here ... adapted to lua 5.2 ... but still --- experimental - -local debug = require("debug") - -local string, table, lpeg, math, io, system = string, table, lpeg, math, io, system -local rawset, rawget, next, setmetatable = rawset, rawget, next, setmetatable - --[[ldx-- <p>We cannot load anything yet. However what we will do us reserve a few tables. These can be used for runtime user data or third party modules and will not be @@ -29,178 +21,6 @@ parametersets = parametersets or { } -- experimental for team table.setmetatableindex(moduledata,table.autokey) table.setmetatableindex(thirddata, table.autokey) ---[[ldx-- -<p>Please create a namespace within these tables before using them!</p> - -<typing> -userdata ['my.name'] = { } -thirddata['tricks' ] = { } -</typing> ---ldx]]-- - ---[[ldx-- -<p>We could cook up a readonly model for global tables but it makes more sense -to invite users to use one of the predefined namespaces. One can redefine the -protector. After all, it's just a lightweight suggestive system, not a -watertight one.</p> ---ldx]]-- - -local global = _G -global.global = global - -local dummy = function() end - ---[[ldx-- -<p>Another approach is to freeze tables by using a metatable, this will be -implemented stepwise.</p> ---ldx]]-- - --- moduledata : no need for protection (only for developers) --- isolatedata : full protection --- userdata : protected --- thirddata : protected - ---[[ldx-- -<p>We could have a metatable that automaticaly creates a top level namespace.</p> ---ldx]]-- - -local luanames = lua.name -- luatex itself - -lua.numbers = lua.numbers or { } local numbers = lua.numbers -lua.messages = lua.messages or { } local messages = lua.messages - -storage.register("lua/numbers", numbers, "lua.numbers" ) -storage.register("lua/messages", messages, "lua.messages") - -local setfenv = setfenv or debug.setfenv -- < 5.2 - -if setfenv then - - local protected = { - -- global table - global = global, - -- user tables - -- moduledata = moduledata, - userdata = userdata, - thirddata = thirddata, - documentdata = documentdata, - -- reserved - protect = dummy, - unprotect = dummy, - -- luatex - tex = tex, - -- lua - string = string, - table = table, - lpeg = lpeg, - math = math, - io = io, - file = file, - bit32 = bit32, - -- - context = context, - } - - local protect_full = function(name) - local t = { } - for k, v in next, protected do - t[k] = v - end - return t - end - - local protect_part = function(name) -- adds - local t = rawget(global,name) - if not t then - t = { } - for k, v in next, protected do - t[k] = v - end - rawset(global,name,t) - end - return t - end - - protect = function(name) - if name == "isolateddata" then - setfenv(2,protect_full(name)) - else - setfenv(2,protect_part(name or "shareddata")) - end - end - - function lua.registername(name,message) - local lnn = lua.numbers[name] - if not lnn then - lnn = #messages + 1 - messages[lnn] = message - numbers[name] = lnn - end - luanames[lnn] = message - context(lnn) - -- initialize once - if name ~= "isolateddata" then - protect_full(name or "shareddata") - end - end - -elseif libraries then -- assume >= 5.2 - - local shared - - protect = function(name) - if not shared then - -- e.g. context is not yet known - local public = { - global = global, - -- moduledata = moduledata, - userdata = userdata, - thirddata = thirddata, - documentdata = documentdata, - protect = dummy, - unprotect = dummy, - context = context, - } - -- - for k, v in next, libraries.builtin do public[k] = v end - for k, v in next, libraries.functions do public[k] = v end - for k, v in next, libraries.obsolete do public[k] = nil end - -- - shared = { __index = public } - protect = function(name) - local t = global[name] or { } - setmetatable(t,shared) -- set each time - return t - end - end - return protect(name) - end - - function lua.registername(name,message) - local lnn = lua.numbers[name] - if not lnn then - lnn = #messages + 1 - messages[lnn] = message - numbers[name] = lnn - end - luanames[lnn] = message - context(lnn) - end - -else - - protect = dummy - - function lua.registername(name,message) - local lnn = lua.numbers[name] - if not lnn then - lnn = #messages + 1 - messages[lnn] = message - numbers[name] = lnn - end - luanames[lnn] = message - context(lnn) - end - +if not global then + global = _G end - |