15507594683

Committed 07 Jun 2025 11:54AM UTC coverage: 30.951% (-30.4%) from 61.309%

Build # 15507594683

Build Type

push

github

Committed by

alerque

Commit Message

chore(tooling): Add post-checkout hook to clear makedeps on branch switch

Coverage Stats

6363 of 20558 relevant lines covered (30.95%)

3445.44 hits per line

Source File
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83.0

/pagebuilders/base.lua

--- SILE pagebuilder class.
-- @interfaces pagebuilders

local module = require("types.module")
local pagebuilder = pl.class(module)
pagebuilder.type = "pagebuilder"

function pagebuilder:_init (typesetter)
   self.typesetter = typesetter
   module._init(self)
   self.awful_bad = 1073741823
   self.inf_bad = 10000
   self.eject_penalty = -self.inf_bad
   self.deplorable = 100000
end

function pagebuilder:collateVboxes (vboxlist)
   local output = SILE.types.node.vbox()
   output:append(vboxlist)
   return output
end

-- Note: Almost 1/3 of the time in a typical SILE in taken iterating through
-- this function. As a result there are some micro-optimizations here that
-- make it a-typical of preferred coding styles. In particular note that
-- we absolutize heavily iterated lengths as early as possible and make
-- make direct calls to their integer amounts, assumed to be in points by
-- the point they are called **without actually checking**!
function pagebuilder:findBestBreak (options)
   local vboxlist = SU.required(options, "vboxlist", "in findBestBreak")
   local target = SU.required(options, "target", "in findBestBreak", "length")
   local restart = options.restart or false
   local force = options.force or false
   local i = 0
   local totalHeight = SILE.types.length()
   local bestBreak = nil
   local started = false
   if restart and restart.target == target then
      totalHeight = restart.totalHeight
      i = restart.i
      started = restart.started
   end
   local leastC = self.inf_bad
   SU.debug("pagebuilder", function ()
      return "Page builder for frame "
         .. self.typesetter.frame.id
         .. " called with "
         .. #vboxlist
         .. " nodes, "
         .. tostring(target)
   end)
   if SU.debugging("vboxes") then
      for j, box in ipairs(vboxlist) do
         SU.debug("vboxes", function ()
            return (j == i and " >" or "  ") .. j .. ": " .. box
         end)
      end
   end
   while not started and i < #vboxlist do
      i = i + 1
      if not vboxlist[i].is_vglue then
         started = true
         i = i - 1
         break
      end
   end
   local pi
   while i < #vboxlist do
      i = i + 1
      local vbox = vboxlist[i]
      SU.debug("pagebuilder", "Dealing with VBox", vbox)
      if vbox.is_vbox then
         totalHeight:___add(vbox.height)
         totalHeight:___add(vbox.depth)
      elseif vbox.is_vglue then
         totalHeight:___add(vbox.height)
      elseif vbox.is_insertion then
         -- TODO: refactor as hook and without side effects!
         target = SILE.insertions.processInsertion(vboxlist, i, totalHeight, target)
         vbox = vboxlist[i]
      end
      local left = target - totalHeight
      SU.debug("pagebuilder", "I have", left, "left")
      -- if left < -20 then SU.error("\nCatastrophic page breaking failure!"); end
      pi = 0
      if vbox.is_penalty then
         pi = vbox.penalty
      end
      if
         vbox.is_penalty and vbox.penalty < self.inf_bad
         or (vbox.is_vglue and i > 1 and not vboxlist[i - 1].discardable)
      then
         local badness
         SU.debug("pagebuilder", "totalHeight", totalHeight, "with target", target)
         if totalHeight.length.amount < target.length.amount then -- TeX #1039
            -- Account for infinite stretch?
            badness = SU.rateBadness(self.inf_bad, left.length.amount, totalHeight.stretch.amount)
         elseif left.length.amount < totalHeight.shrink.amount then
            badness = self.awful_bad
         else
            badness = SU.rateBadness(self.inf_bad, -left.length.amount, totalHeight.shrink.amount)
         end

         local c
         if badness < self.awful_bad then
            if pi <= self.eject_penalty then
               c = pi
            elseif badness < self.inf_bad then
               c = badness + pi -- plus insert
            else
               c = self.deplorable
            end
         else
            c = badness
         end
         if c < leastC then
            leastC = c
            bestBreak = i
         else
            restart = { totalHeight = totalHeight, i = i, started = started, target = target }
         end

         SU.debug("pagebuilder", "Badness:", c)
         if c == self.awful_bad or pi <= self.eject_penalty then
            SU.debug("pagebuilder", "outputting")
            local onepage = {}
            if not bestBreak then
               bestBreak = i
            end
            for j = 1, bestBreak do
               onepage[j] = table.remove(vboxlist, 1)
            end
            while #onepage > 1 and onepage[#onepage].discardable do
               onepage[#onepage] = nil
            end
            return onepage, pi
         end
      end
   end
   SU.debug("pagebuilder", "No page break here")
   if force and bestBreak then
      local onepage = {}
      for j = 1, bestBreak do
         onepage[j] = table.remove(vboxlist, 1)
      end
      return onepage, pi
   end
   return false, restart
end

return pagebuilder

1	--- SILE pagebuilder class.
2	-- @interfaces pagebuilders
3
4	local module = require("types.module")	11✔
5	local pagebuilder = pl.class(module)	11✔
6	pagebuilder.type = "pagebuilder"	11✔
7
8	function pagebuilder:_init (typesetter)	11✔
9	self.typesetter = typesetter	27✔
10	module._init(self)	27✔
11	self.awful_bad = 1073741823	27✔
12	self.inf_bad = 10000	27✔
13	self.eject_penalty = -self.inf_bad	27✔
14	self.deplorable = 100000	27✔
15	end
16
17	function pagebuilder:collateVboxes (vboxlist)	11✔
18	local output = SILE.types.node.vbox()	2✔
19	output:append(vboxlist)	2✔
20	return output	2✔
21	end
22
23	-- Note: Almost 1/3 of the time in a typical SILE in taken iterating through
24	-- this function. As a result there are some micro-optimizations here that
25	-- make it a-typical of preferred coding styles. In particular note that
26	-- we absolutize heavily iterated lengths as early as possible and make
27	-- make direct calls to their integer amounts, assumed to be in points by
28	-- the point they are called without actually checking!
29	function pagebuilder:findBestBreak (options)	11✔
30	local vboxlist = SU.required(options, "vboxlist", "in findBestBreak")	203✔
31	local target = SU.required(options, "target", "in findBestBreak", "length")	203✔
32	local restart = options.restart or false	203✔
33	local force = options.force or false	203✔
34	local i = 0	203✔
35	local totalHeight = SILE.types.length()	203✔
36	local bestBreak = nil	203✔
37	local started = false	203✔
38	if restart and restart.target == target then	203✔
39	totalHeight = restart.totalHeight	×
40	i = restart.i	×
41	started = restart.started	×
42	end
43	local leastC = self.inf_bad	203✔
44	SU.debug("pagebuilder", function ()	406✔
45	return "Page builder for frame "	×
46	.. self.typesetter.frame.id	×
47	.. " called with "	×
48	.. #vboxlist	×
49	.. " nodes, "	×
50	.. tostring(target)	×
51	end)
52	if SU.debugging("vboxes") then	406✔
53	for j, box in ipairs(vboxlist) do	×
54	SU.debug("vboxes", function ()	×
55	return (j == i and " >" or " ") .. j .. ": " .. box	×
56	end)
57	end
58	end
59	while not started and i < #vboxlist do	522✔
60	i = i + 1	517✔
61	if not vboxlist[i].is_vglue then	517✔
62	started = true	198✔
63	i = i - 1	198✔
64	break	198✔
65	end
66	end
67	local pi
68	while i < #vboxlist do	2,533✔
69	i = i + 1	2,370✔
70	local vbox = vboxlist[i]	2,370✔
71	SU.debug("pagebuilder", "Dealing with VBox", vbox)	2,370✔
72	if vbox.is_vbox then	2,370✔
73	totalHeight:___add(vbox.height)	891✔
74	totalHeight:___add(vbox.depth)	1,782✔
75	elseif vbox.is_vglue then	1,479✔
76	totalHeight:___add(vbox.height)	2,678✔
77	elseif vbox.is_insertion then	140✔
78	-- TODO: refactor as hook and without side effects!
79	target = SILE.insertions.processInsertion(vboxlist, i, totalHeight, target)	10✔
80	vbox = vboxlist[i]	5✔
81	end
82	local left = target - totalHeight	2,370✔
83	SU.debug("pagebuilder", "I have", left, "left")	2,370✔
84	-- if left < -20 then SU.error("\nCatastrophic page breaking failure!"); end
85	pi = 0	2,370✔
86	if vbox.is_penalty then	2,370✔
87	pi = vbox.penalty	136✔
88	end
89	if
90	vbox.is_penalty and vbox.penalty < self.inf_bad	2,370✔
91	or (vbox.is_vglue and i > 1 and not vboxlist[i - 1].discardable)	2,283✔
92	then
93	local badness
94	SU.debug("pagebuilder", "totalHeight", totalHeight, "with target", target)	799✔
95	if totalHeight.length.amount < target.length.amount then -- TeX #1039	799✔
96	-- Account for infinite stretch?
97	badness = SU.rateBadness(self.inf_bad, left.length.amount, totalHeight.stretch.amount)	1,566✔
98	elseif left.length.amount < totalHeight.shrink.amount then	16✔
99	badness = self.awful_bad	16✔
100	else
101	badness = SU.rateBadness(self.inf_bad, -left.length.amount, totalHeight.shrink.amount)	×
102	end
103
104	local c
105	if badness < self.awful_bad then	799✔
106	if pi <= self.eject_penalty then	783✔
107	c = pi	24✔
108	elseif badness < self.inf_bad then	759✔
109	c = badness + pi -- plus insert	34✔
110	else
111	c = self.deplorable	725✔
112	end
113	else
114	c = badness	16✔
115	end
116	if c < leastC then	799✔
117	leastC = c	57✔
118	bestBreak = i	57✔
119	else
120	restart = { totalHeight = totalHeight, i = i, started = started, target = target }	742✔
121	end
122
123	SU.debug("pagebuilder", "Badness:", c)	799✔
124	if c == self.awful_bad or pi <= self.eject_penalty then	799✔
125	SU.debug("pagebuilder", "outputting")	40✔
126	local onepage = {}	40✔
127	if not bestBreak then	40✔
128	bestBreak = i	15✔
129	end
130	for j = 1, bestBreak do	398✔
131	onepage[j] = table.remove(vboxlist, 1)	716✔
132	end
133	while #onepage > 1 and onepage[#onepage].discardable do	81✔
134	onepage[#onepage] = nil	41✔
135	end
136	return onepage, pi	40✔
137	end
138	end
139	end
140	SU.debug("pagebuilder", "No page break here")	163✔
141	if force and bestBreak then	163✔
142	local onepage = {}	×
143	for j = 1, bestBreak do	×
144	onepage[j] = table.remove(vboxlist, 1)	×
145	end
146	return onepage, pi	×
147	end
148	return false, restart	163✔
149	end
150
151	return pagebuilder	11✔

sile-typesetter / sile / 15507594683

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