2 -- luatexja/jfmglue.lua
4 luatexbase.provides_module({
5 name = 'luatexja.jfmglue',
8 description = 'Insertion process of JFM glues and kanjiskip',
10 module('luatexja.jfmglue', package.seeall)
11 local err, warn, info, log = luatexbase.errwarinf(_NAME)
13 require('luatexja.base'); local ltjb = luatexja.base
14 require('luatexja.stack'); local ltjs = luatexja.stack
15 require('luatexja.jfont'); local ltjf = luatexja.jfont
16 require('luatexja.pretreat'); local ltjp = luatexja.pretreat
18 local node_type = node.type
19 local node_new = node.new
20 local node_remove = node.remove
21 local node_prev = node.prev
22 local node_next = node.next
23 local node_copy = node.copy
24 local node_tail = node.tail
25 local node_free = node.free
26 local has_attr = node.has_attribute
27 local set_attr = node.set_attribute
28 local node_insert_before = node.insert_before
29 local node_insert_after = node.insert_after
30 local round = tex.round
31 local table_insert = table.insert
33 local id_glyph = node.id('glyph')
34 local id_hlist = node.id('hlist')
35 local id_vlist = node.id('vlist')
36 local id_rule = node.id('rule')
37 local id_ins = node.id('ins')
38 local id_mark = node.id('mark')
39 local id_adjust = node.id('adjust')
40 local id_disc = node.id('disc')
41 local id_whatsit = node.id('whatsit')
42 local id_math = node.id('math')
43 local id_glue = node.id('glue')
44 local id_kern = node.id('kern')
45 local id_penalty = node.id('penalty')
47 local id_glue_spec = node.id('glue_spec')
48 local id_jglyph = node.id('glyph') + 256
49 local id_box_like = node.id('hlist') + 256
50 local id_pbox = node.id('hlist') + 512
51 local sid_user = node.subtype('user_defined')
61 local IC_PROCESSED = 9
67 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
68 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
69 local attr_icflag = luatexbase.attributes['ltj@icflag']
70 local attr_autospc = luatexbase.attributes['ltj@autospc']
71 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
72 local max_dimen = 1073741823
74 local ltjs_get_penalty_table = ltjs.get_penalty_table
75 local ltjs_get_skip_table = ltjs.get_skip_table
76 local ltjf_font_metric_table = ltjf.font_metric_table
77 local ltjf_metrics = ltjf.metrics
79 -------------------- Helper functions
81 -- This function is called only for acquiring `special' characters.
82 local function find_char_class(c,m)
83 return m.chars[c] or 0
86 local spec_zero_glue = node_new(id_glue_spec)
87 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
88 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
90 local function get_zero_glue()
91 return node_copy(spec_zero_glue)
94 local function skip_table_to_spec(n)
95 local g = node_new(id_glue_spec)
96 local st = ltjs_get_skip_table(n, ltjp.box_stack_level)
97 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
98 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
103 local function add_penalty(p,e)
104 if p.penalty>=10000 then
105 if e<=-10000 then p.penalty = 0 end
106 elseif p.penalty<=-10000 then
107 if e>=10000 then p.penalty = 0 end
109 p.penalty = p.penalty + e
110 if p.penalty>=10000 then p.penalty = 10000
111 elseif p.penalty<=-10000 then p.penalty = -10000 end
117 diffmet_rule = math.two_average
118 function math.two_add(a,b) return a+b end
119 function math.two_average(a,b) return (a+b)/2 end
121 -------------------- idea
122 -- 2 node の間に glue/kern/penalty を挿入する.
123 -- 基本方針: char node q と char node p の間
126 -- first: 最初の node,nuc: p,last: 最後の node
129 -- 実際の glue は Np.last, Nq.first の間に挿入される
130 -- Bp: Np.last, Nq.first の間の penalty node 達の配列
132 -- Np, Nq, Bp, widow_Bp について
134 -- 1回のループごとに Nq = Np, Np = (new table) となるのは効率が悪いので,
135 -- Np <-> Nq 入れ替え,その後 Np をクリアすることでテーブルを再利用.
136 -- 同様の関係は Bp, widow_Bp にも.
140 -- node x が non-char node のときは,x のみ
141 -- x が char_node のときは,
142 -- - x が \accent の第二引数だったとき
143 -- [kern2 kern y kern2] x の 3 node が核に加わる
144 -- - x の直後に \/ 由来 kern があったとき
145 -- その \/ 由来の kern が核に加わる
147 -- ins, mark, adjust, whatsit, penalty
149 -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
150 -- +: kern from LINEEND はここに入る
151 -- *: jfm glue はここに入る
153 local head -- the head of current list
154 local last -- the last node of current list
155 local lp -- 外側での list 走査時のカーソル
158 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
160 local ihb_flag -- JFM グルー挿入抑止用 flag
161 -- on: \inhibitglue 指定時,hlist の周囲
163 -------------------- hlist 内の文字の検索
165 local first_char, last_char, find_first_char
167 local function check_box(box_ptr, box_end)
168 local p = box_ptr; local found_visible_node = false
170 find_first_char = false; first_char = nil; last_char = nil
173 while p and p~=box_end do
177 p = node_next(node_next(node_next(p))); pid = p.id
178 elseif has_attr(p, attr_icflag)==IC_PROCESSED then
179 p = node_next(p); pid = p.id
182 if pid==id_glyph then
184 if find_first_char then
185 first_char = p; find_first_char = false
187 last_char = p; found_visible_node = true; p=node_next(p)
188 if (not p) or p==box_end then return found_visible_node end
191 if pid==id_hlist then
192 if has_attr(p, attr_icflag)==PACKED then
193 for q in node.traverse_id(id_glyph, p.head) do
194 if find_first_char then
195 first_char = q; find_first_char = false
197 last_char = q; found_visible_node = true; break
201 if check_box(p.head, nil) then found_visible_node = true end
202 else if find_first_char then
203 find_first_char = false
209 elseif not (pid==id_ins or pid==id_mark
210 or pid==id_adjust or pid==id_whatsit
211 or pid==id_penalty) then
212 found_visible_node = true
213 if find_first_char then
214 find_first_char = false
221 return found_visible_node
224 -------------------- Np の計算と情報取得
226 local function set_attr_icflag_processed(p)
227 local a = has_attr(p, attr_icflag) or 0
228 if a<=1 then set_attr(p, attr_icflag, PROCESSED) end
231 local function check_next_ickern()
232 if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
233 set_attr(lp, attr_icflag, IC_PROCESSED); Np.last = lp; lp = node_next(lp)
234 else Np.last = Np.nuc end
237 local function calc_np_pbox()
238 Np.first = lp; Np.id = id_pbox
239 lpa = KINSOKU -- dummy
240 while lp~=last and lpa>=PACKED and lpa~=BOXBDD do
241 Np.nuc = lp; lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
246 local function calc_np()
247 -- We assume lp = node_next(Np.last)
249 Nr = Nq; for k in pairs(Nr) do Nr[k] = nil end
251 for k in pairs(Bp) do Bp[k] = nil end
254 lpi = lp.id; lpa = has_attr(lp, attr_icflag) or 0
255 if lp==last then Np = nil; return
256 elseif lpa>=PACKED then
257 if lpa == BOXBDD then
258 local lq = node_next(lp)
259 head = node_remove(head, lp); lp = lq
260 else calc_np_pbox(); return end -- id_pbox
261 elseif lpi == id_ins or lpi == id_mark or lpi == id_adjust then
262 set_attr_icflag_processed(lp); lp = node_next(lp)
263 elseif lpi == id_penalty then
264 table_insert(Bp, lp); set_attr_icflag_processed(lp); lp = node_next(lp)
265 elseif lpi == id_whatsit then
266 if lp.subtype==sid_user and lp.user_id==30111 then
267 local lq = node_next(lp)
268 head = node_remove(head, lp); lp = lq; ihb_flag = true
270 set_attr_icflag_processed(lp); lp = node_next(lp)
272 else -- a `cluster' is found
274 if lpi == id_glyph then -- id_[j]glyph
275 if lp.font == has_attr(lp, attr_curjfnt) then Np.id = id_jglyph
276 else Np.id = id_glyph end
277 Np.nuc = lp; set_attr_icflag_processed(lp)
278 lp = node_next(lp); check_next_ickern(); return
279 elseif lpi == id_hlist then -- hlist
280 Np.last = lp; Np.nuc = lp; set_attr_icflag_processed(lp)
281 if lp.shift~=0 then Np.id = id_box_like
283 lp = node_next(lp); return
284 elseif lpi == id_vlist or lpi == id_rule then -- id_box_like
285 Np.nuc = lp; Np.last = lp; Np.id = id_box_like; break
286 elseif lpi == id_math then -- id_math
287 Np.nuc = lp; lp = node_next(lp)
288 while lp.id~=id_math do
289 set_attr_icflag_processed(lp); lp = node_next(lp)
291 elseif lpi == id_kern and lp.subtype==2 then -- id_kern
292 set_attr_icflag_processed(lp); lp = node_next(lp)
293 set_attr_icflag_processed(lp); lp = node_next(lp)
294 set_attr_icflag_processed(lp); lp = node_next(lp)
295 set_attr_icflag_processed(lp); Np.nuc = lp
296 if lp.font == has_attr(lp, attr_curjfnt) then Np.id = id_jglyph
297 else Np.id = id_glyph end
298 lp = node_next(lp); check_next_ickern(); return
299 else -- id_disc, id_glue, id_kern
304 set_attr_icflag_processed(lp); Np.last = lp; Np.id = lpi; lp = node_next(lp)
307 -- extract informations from Np
308 -- We think that "Np is a Japanese character" if Np.met~=nil,
309 -- "Np is an alphabetic character" if Np.pre~=nil,
310 -- "Np is not a character" otherwise.
313 local function set_np_xspc_jachar(c,x)
314 Np.class = has_attr(x, attr_jchar_class)
316 local z = ltjf_font_metric_table[x.font]
318 Np.met = ltjf_metrics[z.jfm]
320 Np.pre = ltjs_get_penalty_table('pre', c, 0, ltjp.box_stack_level)
321 Np.post = ltjs_get_penalty_table('post', c, 0, ltjp.box_stack_level)
322 z = find_char_class('lineend', Np.met)
323 local y = Np.met.size_cache[Np.size].char_type[Np.class]
324 if y.kern and y.kern[z] then
329 y = ltjs_get_penalty_table('xsp', c, 3, ltjp.box_stack_level)
330 Np.xspc_before = (y>=2)
331 Np.xspc_after = (y%2==1)
332 Np.auto_kspc = (has_attr(x, attr_autospc)==1)
333 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
337 local ligature_head = 1
338 local ligature_tail = 2
339 local function set_np_xspc_alchar(c,x, lig)
341 if lig == ligature_head then
342 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
343 x = x.components; c = x.char
346 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
347 x = node_tail(x.components); c = x.char
350 Np.pre = ltjs_get_penalty_table('pre', c, 0, ltjp.box_stack_level)
351 Np.post = ltjs_get_penalty_table('post', c, 0, ltjp.box_stack_level)
353 Np.pre = 0; Np.post = 0
356 local y = ltjs_get_penalty_table('xsp', c, 3, ltjp.box_stack_level)
357 Np.xspc_before = (y%2==1)
358 Np.xspc_after = (y>=2)
359 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
363 local function extract_np()
365 if Np.id == id_jglyph then
366 set_np_xspc_jachar(x.char, x)
367 elseif Np.id == id_glyph then
368 set_np_xspc_alchar(x.char, x, ligature_head)
369 elseif Np.id == id_hlist then
370 find_first_char = true; first_char = nil; last_char = nil
371 if check_box(x.head, nil) then
373 if first_char.font == has_attr(first_char, attr_curjfnt) then
374 set_np_xspc_jachar(first_char.char,first_char)
376 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
380 elseif Np.id == id_pbox then -- mikann
381 find_first_char = true; first_char = nil; last_char = nil
382 if check_box(Np.first, node_next(Np.last)) then
384 if first_char.font == has_attr(first_char, attr_curjfnt) then
385 set_np_xspc_jachar(first_char.char,first_char)
387 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
391 elseif Np.id == id_disc then
392 find_first_char = true; first_char = nil; last_char = nil
393 if check_box(x.replace, nil) then
395 if first_char.font == has_attr(first_char, attr_curjfnt) then
396 set_np_xspc_jachar(first_char.char,first_char)
398 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
402 elseif Np.id == id_math then
403 set_np_xspc_alchar(-1, x)
407 -- change the information for the next loop
408 -- (will be done if Np is an alphabetic character or a hlist)
409 local function after_hlist()
411 if last_char.font == has_attr(last_char, attr_curjfnt) then
412 set_np_xspc_jachar(last_char.char,last_char, ligature_after)
414 set_np_xspc_alchar(last_char.char,last_char, ligature_after)
417 Np.pre = nil; Np.met = nil
420 local function after_alchar()
422 set_np_xspc_alchar(x.char,x, ligature_after)
426 -------------------- 最下層の処理
428 local function lineend_fix(g)
429 if g and g.id==id_kern then
431 elseif Nq.lend~=0 then
433 g = node_new(id_kern); g.subtype = 1
434 g.kern = -Nq.lend; set_attr(g, attr_icflag, LINEEND)
435 elseif g.id==id_kern then
436 g.kern = g.kern - Nq.lend
438 g.spec.width = g.spec.width - Nq.lend
444 -- change penalties (or create a new penalty, if needed)
445 local function handle_penalty_normal(post, pre, g)
446 local a = (pre or 0) + (post or 0)
448 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
449 local p = node_new(id_penalty)
450 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
452 head = node_insert_before(head, Np.first, p)
453 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
455 else for i, v in pairs(Bp) do add_penalty(v,a) end
459 local function handle_penalty_always(post, pre, g)
460 local a = (pre or 0) + (post or 0)
462 if not (g and g.id==id_glue) or Nq.lend~=0 then
463 local p = node_new(id_penalty)
464 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
466 head = node_insert_before(head, Np.first, p)
467 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
469 else for i, v in pairs(Bp) do add_penalty(v,a) end
473 local function handle_penalty_suppress(post, pre, g)
474 local a = (pre or 0) + (post or 0)
476 if g and g.id==id_glue then
477 local p = node_new(id_penalty)
478 p.penalty = 10000; head = node_insert_before(head, Np.first, p)
479 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
481 else for i, v in pairs(Bp) do add_penalty(v,a) end
485 -- 和文文字間の JFM glue を node 化
486 local function new_jfm_glue(Nn, bc, ac)
487 -- bc, ac: char classes
489 local z = Nn.met.size_cache[Nn.size].char_type[bc]
490 if z.glue and z.glue[ac] then
491 local h = node_new(id_glue_spec)
492 h.width = z.glue[ac][1]
493 h.stretch = z.glue[ac][2]
494 h.shrink = z.glue[ac][3]
495 h.stretch_order=0; h.shrink_order=0
496 g = node_new(id_glue)
497 g.subtype = 0; g.spec = h
498 elseif z.kern and z.kern[ac] then
499 g = node_new(id_kern)
500 g.subtype = 1; g.kern = z.kern[ac]
502 if g then set_attr(g, attr_icflag, FROM_JFM) end
506 -- Nq.last (kern w) .... (glue/kern g) Np.first
507 local function real_insert(w, g)
509 local h = node_new(id_kern)
510 set_attr(h, attr_icflag, LINE_END)
511 h.kern = w; h.subtype = 1
512 head = node_insert_after(head, Nq.last, h)
515 head = node_insert_before(head, Np.first, g)
520 -------------------- 和文文字間空白量の決定
523 local function get_kanji_skip_from_jfm(Nn)
524 local i = Nn.met.size_cache[Nn.size].kanjiskip
526 return { i[1], i[2], i[3] }
530 local function get_kanjiskip()
531 local g = node_new(id_glue)
532 if Np.auto_kspc or Nq.auto_kspc then
533 if kanji_skip.width == max_dimen then
534 local gx = node_new(id_glue_spec);
535 gx.stretch_order = 0; gx.shrink_order = 0
536 local bk = get_kanji_skip_from_jfm(Nq)
538 if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
541 ak = get_kanji_skip_from_jfm(Np)
545 gx.width = round(diffmet_rule(bk[1], ak[1]))
546 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
547 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
549 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
552 gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
553 else gx = get_zero_glue() -- fallback
556 else g.spec=node_copy(kanji_skip) end
558 g.spec = get_zero_glue()
560 set_attr(g, attr_icflag, KANJI_SKIP)
564 local function calc_ja_ja_aux(gb,ga)
568 if not ga then return gb end
569 local k = node.type(gb.id) .. node.type(ga.id)
570 if k == 'glueglue' then
572 gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
573 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
574 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
577 elseif k == 'kernkern' then
579 gb.kern = round(diffmet_rule(gb.kern, ga.kern))
582 elseif k == 'kernglue' then
583 -- gb: kern, ga: glue
584 ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
585 ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
586 ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
590 -- gb: glue, ga: kern
591 gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
592 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
593 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
600 local function calc_ja_ja_glue()
601 if ihb_flag then return nil
602 elseif (Nq.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
603 return new_jfm_glue(Nq, Nq.class, Np.class)
605 local g = new_jfm_glue(Nq, Nq.class,
606 find_char_class('diffmet',Nq.met))
607 local h = new_jfm_glue(Np, find_char_class('diffmet',Np.met),
609 return calc_ja_ja_aux(g,h)
613 -------------------- 和欧文間空白量の決定
616 local function get_xkanji_skip_from_jfm(Nn)
617 local i = Nn.met.size_cache[Nn.size].xkanjiskip
619 return { i[1], i[2], i[3] }
623 local function get_xkanjiskip(Nn)
624 local g = node_new(id_glue)
625 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
626 if xkanji_skip.width == max_dimen then
627 local gx = node_new(id_glue_spec);
628 gx.stretch_order = 0; gx.shrink_order = 0
629 local bk = get_xkanji_skip_from_jfm(Nn)
631 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
632 else gx = get_zero_glue() -- fallback
635 else g.spec=node_copy(xkanji_skip) end
637 g.spec = get_zero_glue()
639 set_attr(g, attr_icflag, XKANJI_SKIP)
644 -------------------- 隣接した「塊」間の処理
646 local function get_OA_skip()
648 return new_jfm_glue(Np, find_char_class('jcharbdd',Np.met), Np.class)
652 local function get_OB_skip()
654 return new_jfm_glue(Nq, Nq.class, find_char_class('jcharbdd',Nq.met))
659 -- (anything) .. jachar
660 local function handle_np_jachar()
662 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
663 g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
665 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
666 elseif Nq.met then -- Nq.id==id_hlist
667 g = get_OA_skip() or get_kanjiskip() -- O_A->K
668 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
670 g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
671 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
673 g = get_OA_skip() -- O_A
674 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
675 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
676 else handle_penalty_always(0, Np.pre, g)
680 -- \jcharwidowpenalty 挿入予定箇所更新
681 if mode and ltjs_get_penalty_table('kcat', Np.char, 0, ltjp.box_stack_level)%2~=1 then
682 widow_Np.first = Np.first;
683 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
687 -- jachar .. (anything)
688 local function handle_nq_jachar()
691 g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
693 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
695 g = get_OB_skip(); g = lineend_fix(g) -- O_B
696 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
697 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
698 else handle_penalty_always(Nq.post, 0, g)
700 real_insert(Nq.lend, g)
704 -- (anything) .. (和文文字で終わる hlist)
705 local function handle_np_ja_hlist()
707 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
708 g = get_OB_skip() or get_kanjiskip() -- O_B->K
710 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
711 elseif Nq.met then -- Nq.id==id_hlist
712 g = get_kanjiskip() -- K
713 handle_penalty_suppress(0, 0, g); real_insert(0, g)
715 g = get_xkanjiskip(Np) -- X
716 handle_penalty_suppress(0, 0, g); real_insert(0, g)
720 -- (和文文字で終わる hlist) .. (anything)
721 local function handle_nq_ja_hlist()
724 g = get_xkanjiskip(Nq) -- X
725 handle_penalty_suppress(0, 0, g); real_insert(0, g)
729 -------------------- 開始・終了時の処理
732 local function handle_list_tail()
735 -- the current list is to be line-breaked:
736 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
738 g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
739 set_attr(g, attr_icflag, BOXBDD)
740 node_insert_after(head, Np.last, g)
743 -- Insert \jcharwidowpenalty
744 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
746 handle_penalty_normal(0,
747 ltjs_get_penalty_table('jwp', 0, 0, ltjp.box_stack_level))
750 -- the current list is the contents of a hbox
751 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
752 local g = new_jfm_glue(Np, Np.class, find_char_class('boxbdd',Np.met))
754 set_attr(g, attr_icflag, BOXBDD)
755 head = node_insert_after(head, Np.last, g)
758 head = node_remove(head, last) -- remove the sentinel
763 local function handle_list_head()
764 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
765 local g = new_jfm_glue(Np, find_char_class('boxbdd',Np.met), Np.class)
767 set_attr(g, attr_icflag, BOXBDD)
768 if g.id==id_glue and #Bp==0 then
769 local h = node_new(id_penalty)
770 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
772 head = node_insert_before(head, Np.first, g)
778 local function init_var()
779 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
780 kanji_skip=skip_table_to_spec('kanjiskip')
781 xkanji_skip=skip_table_to_spec('xkanjiskip')
783 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
784 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
785 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
788 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
789 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
790 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
793 -- the current list is to be line-breaked:
794 -- hbox from \parindent is skipped.
795 while lp and (lp.id==id_whatsit or ((lp.id==id_hlist) and (lp.subtype==3))) do
799 -- the current list is the contents of a hbox:
801 last=node.tail(head); local g = node_new(id_kern)
802 node_insert_after(head, last, g); last = g
806 -------------------- 外部から呼ばれる関数
809 function main(ahead, amode)
810 if not ahead then return ahead end
811 head = ahead; mode = amode; init_var(); calc_np()
813 extract_np(); handle_list_head()
814 if Np.id==id_glyph then after_alchar()
815 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
818 if not mode then head = node_remove(head, last) end
825 if Np.id == id_jglyph then
828 if Np.id==id_hlist then handle_np_ja_hlist()
829 else handle_np_jachar() end
831 if Nq.id==id_hlist then handle_nq_ja_hlist()
832 else handle_nq_jachar() end
835 if Np.id==id_glyph then after_alchar()
836 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
841 -- adjust attr_icflag
842 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
847 local inhibitglue_node=node_new(id_whatsit, sid_user)
848 inhibitglue_node.user_id=30111; inhibitglue_node.type=100; inhibitglue_node.value=1
850 function create_inhibitglue_node()
851 node.write(node.copy(inhibitglue_node))