stable 2010-05-24 13:10

1 files changed, 315 insertions, 0 deletions

diff --git a/tex/context/base/node-tsk.lua b/tex/context/base/node-tsk.lua
new file mode 100644
index 000000000..206b4a266
--- /dev/null
+++ b/tex/context/base/node-tsk.lua
@@ -0,0 +1,315 @@
+if not modules then modules = { } end modules ['node-tsk'] = {
+    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"
+}
+
+-- this might move to task-*
+
+local trace_tasks = false  trackers.register("tasks.creation", function(v) trace_tasks = v end)
+
+tasks      = tasks       or { }
+tasks.data = tasks.data  or { }
+
+function tasks.new(name,list)
+    local tasklist = sequencer.reset()
+    tasks.data[name] = { list = tasklist, runner = false }
+    for l=1,#list do
+        sequencer.appendgroup(tasklist,list[l])
+    end
+end
+
+function tasks.restart(name)
+    local data = tasks.data[name]
+    if data then
+        data.runner = false
+    end
+end
+
+function tasks.enableaction(name,action)
+    local data = tasks.data[name]
+    if data then
+        sequencer.enableaction(data.list,action)
+        data.runner = false
+    end
+end
+
+function tasks.disableaction(name,action)
+    local data = tasks.data[name]
+    if data then
+        sequencer.disableaction(data.list,action)
+        data.runner = false
+    end
+end
+
+function tasks.enablegroup(name,group)
+    local data = tasks.data[name]
+    if data then
+        sequencer.enablegroup(data.list,group)
+        data.runner = false
+    end
+end
+
+function tasks.disablegroup(name,group)
+    local data = tasks.data[name]
+    if data then
+        sequencer.disablegroup(data.list,group)
+        data.runner = false
+    end
+end
+
+function tasks.appendaction(name,group,action,where,kind)
+    local data = tasks.data[name]
+    if data then
+        sequencer.appendaction(data.list,group,action,where,kind)
+        data.runner = false
+    end
+end
+
+function tasks.prependaction(name,group,action,where,kind)
+    local data = tasks.data[name]
+    if data then
+        sequencer.prependaction(data.list,group,action,where,kind)
+        data.runner = false
+    end
+end
+
+function tasks.removeaction(name,group,action)
+    local data = tasks.data[name]
+    if data then
+        sequencer.removeaction(data.list,group,action)
+        data.runner = false
+    end
+end
+
+function tasks.showactions(name,group,action,where,kind)
+    local data = tasks.data[name]
+    if data then
+        logs.report("nodes","task %s, list:\n%s",name,sequencer.nodeprocessor(data.list))
+    end
+end
+
+-- Optimizing for the number of arguments makes sense, but getting rid of
+-- the nested call (no problem but then we also need to register the
+-- callback with this mechanism so that it gets updated) does not save
+-- much time (24K calls on mk.tex).
+
+local created, total = 0, 0
+
+statistics.register("node list callback tasks", function()
+    if total > 0 then
+        return string.format("%s unique task lists, %s instances (re)created, %s calls",table.count(tasks.data),created,total)
+    else
+        return nil
+    end
+end)
+
+local compile, nodeprocessor = sequencer.compile, sequencer.nodeprocessor
+
+function tasks.actions(name,n) -- we optimize for the number or arguments (no ...)
+    local data = tasks.data[name]
+    if data then
+        if n == 0 then
+            return function(head)
+                local runner = data.runner
+                total = total + 1 -- will go away
+                if not runner then
+                    created = created + 1
+                    if trace_tasks then
+                        logs.report("nodes","creating task runner '%s'",name)
+                    end
+                    runner = compile(data.list,nodeprocessor,0)
+                    data.runner = runner
+                end
+                return runner(head)
+            end
+        elseif n == 1 then
+            return function(head,one)
+                total = total + 1 -- will go away
+                local runner = data.runner
+                if not runner then
+                    created = created + 1
+                    if trace_tasks then
+                        logs.report("nodes","creating task runner '%s' with 1 extra arguments",name)
+                    end
+                    runner = compile(data.list,nodeprocessor,1)
+                    data.runner = runner
+                end
+                return runner(head,one)
+            end
+        elseif n == 2 then
+            return function(head,one,two)
+                total = total + 1 -- will go away
+                local runner = data.runner
+                if not runner then
+                    created = created + 1
+                    if trace_tasks then
+                        logs.report("nodes","creating task runner '%s' with 2 extra arguments",name)
+                    end
+                    runner = compile(data.list,nodeprocessor,2)
+                    data.runner = runner
+                end
+                return runner(head,one,two)
+            end
+        elseif n == 3 then
+            return function(head,one,two,three)
+                total = total + 1 -- will go away
+                local runner = data.runner
+                if not runner then
+                    created = created + 1
+                    if trace_tasks then
+                        logs.report("nodes","creating task runner '%s' with 3 extra arguments",name)
+                    end
+                    runner = compile(data.list,nodeprocessor,3)
+                    data.runner = runner
+                end
+                return runner(head,one,two,three)
+            end
+        elseif n == 4 then
+            return function(head,one,two,three,four)
+                total = total + 1 -- will go away
+                local runner = data.runner
+                if not runner then
+                    created = created + 1
+                    if trace_tasks then
+                        logs.report("nodes","creating task runner '%s' with 4 extra arguments",name)
+                    end
+                    runner = compile(data.list,nodeprocessor,4)
+                    data.runner = runner
+                end
+                return runner(head,one,two,three,four)
+            end
+        elseif n == 5 then
+            return function(head,one,two,three,four,five)
+                total = total + 1 -- will go away
+                local runner = data.runner
+                if not runner then
+                    created = created + 1
+                    if trace_tasks then
+                        logs.report("nodes","creating task runner '%s' with 5 extra arguments",name)
+                    end
+                    runner = compile(data.list,nodeprocessor,5)
+                    data.runner = runner
+                end
+                return runner(head,one,two,three,four,five)
+            end
+        else
+            return function(head,...)
+                total = total + 1 -- will go away
+                local runner = data.runner
+                if not runner then
+                    created = created + 1
+                    if trace_tasks then
+                        logs.report("nodes","creating task runner '%s' with n extra arguments",name)
+                    end
+                    runner = compile(data.list,nodeprocessor,"n")
+                    data.runner = runner
+                end
+                return runner(head,...)
+            end
+        end
+    else
+        return nil
+    end
+end
+
+function tasks.table(name) --maybe move this to task-deb.lua
+    local tsk = tasks.data[name]
+    local lst = tsk and tsk.list
+    local HL, NC, NR, bold, type = context.HL, context.NC, context.NR, context.bold, context.type
+    if lst then
+        local list, order = lst.list, lst.order
+        if list and order then
+            context.starttabulate { "|l|l|" }
+            NC() bold("category") NC() bold("function") NC() NR()
+            for i=1,#order do
+                HL()
+                local o = order[i]
+                local l = list[o]
+                if #l == 0 then
+                    NC() type(o) NC() context("unset") NC() NR()
+                else
+                    local done = false
+                    for k, v in table.sortedhash(l) do
+                        NC() if not done then type(o) done = true end NC() type(v) NC() NR()
+                    end
+                end
+            end
+            context.stoptabulate()
+        end
+    end
+end
+
+tasks.new (
+    "processors",
+    {
+        "before",      -- for users
+        "normalizers",
+        "characters",
+        "words",
+        "fonts",
+        "lists",
+        "after",       -- for users
+    }
+)
+
+tasks.new (
+    "finalizers",
+    {
+        "before",      -- for users
+        "normalizers",
+--      "characters",
+--      "finishers",
+        "fonts",
+        "lists",
+        "after",       -- for users
+    }
+)
+
+tasks.new (
+    "shipouts",
+    {
+        "before",      -- for users
+        "normalizers",
+        "finishers",
+        "after",       -- for users
+    }
+)
+
+tasks.new (
+    "mvlbuilders",
+    {
+        "before",      -- for users
+        "normalizers",
+        "after",       -- for users
+    }
+)
+
+tasks.new (
+    "vboxbuilders",
+    {
+        "before",      -- for users
+        "normalizers",
+        "after",       -- for users
+    }
+)
+
+--~ tasks.new (
+--~     "parbuilders",
+--~     {
+--~         "before",      -- for users
+--~         "lists",
+--~         "after",       -- for users
+--~     }
+--~ )
+
+--~ tasks.new (
+--~     "pagebuilders",
+--~     {
+--~         "before",      -- for users
+--~         "lists",
+--~         "after",       -- for users
+--~     }
+--~ )