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if not modules then modules = { } end modules ['l-lua'] = {
version = 1.001,
comment = "companion to luat-lib.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- compatibility hacks ... try to avoid usage
local major, minor = string.match(_VERSION,"^[^%d]+(%d+)%.(%d+).*$")
_MAJORVERSION = tonumber(major) or 5
_MINORVERSION = tonumber(minor) or 1
-- basics:
if loadstring then
local loadnormal = load
function load(first,...)
if type(first) == "string" then
return loadstring(first,...)
else
return loadnormal(first,...)
end
end
else
loadstring = load
end
-- table:
-- Starting with version 5.2 Lua no longer provide ipairs, which makes
-- sense. As we already used the for loop and # in most places the
-- impact on ConTeXt was not that large; the remaining ipairs already
-- have been replaced. In a similar fashion we also hardly used pairs.
--
-- Hm, actually ipairs was retained, but we no longer use it anyway.
--
-- Just in case, we provide the fallbacks as discussed in Programming
-- in Lua (http://www.lua.org/pil/7.3.html):
if not ipairs then
-- for k, v in ipairs(t) do ... end
-- for k=1,#t do local v = t[k] ... end
local function iterate(a,i)
i = i + 1
local v = a[i]
if v ~= nil then
return i, v --, nil
end
end
function ipairs(a)
return iterate, a, 0
end
end
if not pairs then
-- for k, v in pairs(t) do ... end
-- for k, v in next, t do ... end
function pairs(t)
return next, t -- , nil
end
end
-- The unpack function has been moved to the table table, and for compatiility
-- reasons we provide both now.
if not table.unpack then
table.unpack = _G.unpack
elseif not unpack then
_G.unpack = table.unpack
end
-- package:
-- if not package.seachers then
--
-- package.searchers = package.loaders -- 5.2
--
-- elseif not package.loaders then
--
-- package.loaders = package.searchers
--
-- end
if not package.loaders then -- brr, searchers is a special "loadlib function" userdata type
package.loaders = package.searchers
end
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