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if not modules then modules = { } end modules ['pack-obj'] = {
version = 1.001,
comment = "companion to pack-obj.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
--[[ldx--
<p>We save object references in the main utility table. jobobjects are
reusable components.</p>
--ldx]]--
local commands, context = commands, context
local allocate = utilities.storage.allocate
local collected = allocate()
local tobesaved = allocate()
local jobobjects = {
collected = collected,
tobesaved = tobesaved,
}
job.objects = jobobjects
local function initializer()
collected = jobobjects.collected
tobesaved = jobobjects.tobesaved
end
job.register('job.objects.collected', tobesaved, initializer, nil)
function jobobjects.save(tag,number,page)
local t = { number, page }
tobesaved[tag], collected[tag] = t, t
end
function jobobjects.set(tag,number,page)
collected[tag] = { number, page }
end
function jobobjects.get(tag)
return collected[tag] or tobesaved[tag]
end
function jobobjects.number(tag,default)
local o = collected[tag] or tobesaved[tag]
return o and o[1] or default
end
function jobobjects.page(tag,default)
local o = collected[tag] or tobesaved[tag]
return o and o[2] or default
end
-- interface
commands.saveobject = jobobjects.save
commands.setobject = jobobjects.set
function commands.objectnumber(tag,default)
local o = collected[tag] or tobesaved[tag]
context(o and o[1] or default)
end
function commands.objectpage(tag,default)
local o = collected[tag] or tobesaved[tag]
context(o and o[2] or default)
end
function commands.doifobjectreferencefoundelse(tag)
commands.doifelse(collected[tag] or tobesaved[tag])
end
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