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if not modules then modules = { } end modules ['node-pro'] = {
version = 1.001,
comment = "companion to node-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local trace_callbacks = false trackers .register("nodes.callbacks", function(v) trace_callbacks = v end)
local force_processors = false directives.register("nodes.processors.force", function(v) force_processors = v end)
local report_nodes = logs.reporter("nodes","processors")
local nodes = nodes
local tasks = nodes.tasks
local nuts = nodes.nuts
local tonut = nodes.tonut
local tonode = nodes.tonode
nodes.processors = nodes.processors or { }
local processors = nodes.processors
local tasks = nodes.tasks
local report_nodes = logs.reporter("nodes","processors")
local countnodes = nuts.countall
do
local function reconstruct(head)
return ",stream : " .. nodes.listtoutf(head,"",false,nil,true)
end
local before = nil
local count = 0
local show = false
function processors.trace_glyph_run_b(head,groupcode)
count = count + 1
before = countnodes(head)
end
function processors.trace_glyph_run_a(head,groupcode)
report_nodes("processors: run %i, group %a, # before %a, # after %s%s",
count,groupcode,before,countnodes(head),
show and reconstruct(head) or ""
)
before = false
end
local prependaction = tasks.prependaction
local appendaction = tasks.appendaction
local enableaction = tasks.enableaction
local disableaction = tasks.disableaction
trackers.register("nodes.callbacks", function(v)
if not v then
disableaction("processors","nodes.processors.trace_glyph_run_b")
disableaction("processors","nodes.processors.trace_glyph_run_a")
elseif before == nil then
prependaction("processors","before","nodes.processors.trace_glyph_run_b",nil,"nonut","enabled")
appendaction ("processors","after", "nodes.processors.trace_glyph_run_a",nil,"nonut","enabled")
before = false
else
enableaction("processors","nodes.processors.trace_glyph_run_b")
enableaction("processors","nodes.processors.trace_glyph_run_a")
show = v == "detail"
end
end)
end
local glyph_run = tasks.actions("processors")
local pre_linebreak_filter = tasks.actions("paragraphs")
local post_linebreak_filter = tasks.actions("finalizers")
processors.glyph_run = glyph_run
processors.pre_linebreak_filter = pre_linebreak_filter
processors.post_linebreak_filter = post_linebreak_filter
callbacks.register("glyph_run", glyph_run, "glyph processing")
callbacks.register("pre_linebreak_filter", pre_linebreak_filter, "horizontal manipulations (before par break)")
callbacks.register("post_linebreak_filter",post_linebreak_filter,"horizontal manipulations (after par break)")
do
local hpack = nodes.hpack
function nodes.fullhpack(head,...)
return hpack((glyph_run(head)),...)
end
local hpack = nuts.hpack
function nuts.fullhpack(head,...)
return hpack(tonut(glyph_run(tonode(head))),...)
end
end
do
----- texnest = tex.nest
----- getnest = tex.getnest
local getlist = nodes.getlist -- still nodes !
local setlist = nodes.setlist
local getsubtype = nodes.getsubtype
local linelist_code = nodes.listcodes.line
local lineactions = tasks.actions("contributers")
local adjustactions = tasks.actions("adjusters")
-- this was the "contributers" callback but we changed the interface
-- historically we use a different order than the callback
function processors.append_line_filter(head,tail,where,index)
if tail then
if where == "box" then
-- here we don't return something, we operate on the line (content)
if getsubtype(tail) == linelist_code then -- always
local list = getlist(tail)
if list then
local result = lineactions(list,where,tail,index) -- tail is parent of list
if result and result ~= list then
setlist(tail,result)
end
end
end
elseif where == "postadjust" or where == "preadjust" then
-- we use the same order as for lines
return adjustactions(head,where,tail,index)
end
end
end
callbacks.register("append_line_filter", processors.append_line_filter, "things done with lines")
end
do
local actions = tasks.actions("alignments")
function processors.alignment_filter(head,attr,preamble)
actions(head,attr,preamble)
end
callbacks.register("alignment_filter", processors.alignment_filter, "things done with alignments")
end
statistics.register("h-node processing time", function()
return statistics.elapsedseconds(nodes,"including kernel") -- hm, ok here?
end)
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