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 luatexja.load_module('stack'); local ltjs = luatexja.stack
14 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
15 luatexja.load_module('pretreat'); local ltjp = luatexja.pretreat
17 local has_attr = node.has_attribute
18 local set_attr = node.set_attribute
19 local insert_before = node.insert_before
20 local node_next = node.next
21 local round = tex.round
22 local ltjs_fast_get_penalty_table = ltjs.fast_get_penalty_table
23 local ltjf_font_metric_table = ltjf.font_metric_table
24 local ltjf_find_char_class = ltjf.find_char_class
25 local node_new = node.new
26 local node_copy = node.copy
28 local ligature_head = 1
29 local ligature_tail = 2
31 local id_glyph = node.id('glyph')
32 local id_hlist = node.id('hlist')
33 local id_vlist = node.id('vlist')
34 local id_rule = node.id('rule')
35 local id_ins = node.id('ins')
36 local id_mark = node.id('mark')
37 local id_adjust = node.id('adjust')
38 local id_disc = node.id('disc')
39 local id_whatsit = node.id('whatsit')
40 local id_math = node.id('math')
41 local id_glue = node.id('glue')
42 local id_kern = node.id('kern')
43 local id_penalty = node.id('penalty')
45 local id_glue_spec = node.id('glue_spec')
46 local id_jglyph = node.id('glyph') + 256 -- Japanese character
47 local id_box_like = node.id('hlist') + 256 -- vbox, shifted hbox
48 local id_pbox = node.id('hlist') + 512 -- already processed nodes (by \unhbox)
49 local id_pbox_w = node.id('hlist') + 513 -- cluster which consists of a whatsit
50 local sid_user = node.subtype('user_defined')
52 local sid_start_link = node.subtype('pdf_start_link')
53 local sid_start_thread = node.subtype('pdf_start_thread')
54 local sid_end_link = node.subtype('pdf_end_link')
55 local sid_end_thread = node.subtype('pdf_end_thread')
57 local ITALIC = luatexja.icflag_table.ITALIC
58 local PACKED = luatexja.icflag_table.PACKED
59 local KINSOKU = luatexja.icflag_table.KINSOKU
60 local FROM_JFM = luatexja.icflag_table.FROM_JFM
61 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
62 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
63 local PROCESSED = luatexja.icflag_table.PROCESSED
64 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
65 local BOXBDD = luatexja.icflag_table.BOXBDD
66 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
70 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
71 local attr_icflag = luatexbase.attributes['ltj@icflag']
72 local max_dimen = 1073741823
74 local function get_attr_icflag(p)
75 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
78 -------------------- Helper functions
80 local function copy_attr(new, old)
84 -- This function is called only for acquiring `special' characters.
85 local function fast_find_char_class(c,m)
86 return m.size_cache.chars[c] or 0
90 local function slow_find_char_class(c, m, oc)
92 local cls = ltjf_find_char_class(oc, m)
93 if xc ~= oc and cls==0 then cls, xc = ltjf_find_char_class(-xc, m) end
97 local zero_glue = node_new(id_glue)
98 spec_zero_glue = node_new(id_glue_spec) -- must be public, since mentioned from other sources
99 local spec_zero_glue = spec_zero_glue
100 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
101 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
102 zero_glue.spec = spec_zero_glue
104 local function skip_table_to_spec(n)
105 local g, st = node_new(id_glue_spec), ltjs.fast_get_skip_table(n)
106 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
107 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
113 local function add_penalty(p,e)
116 if e<=-10000 then pp = 0 end
117 elseif pp<=-10000 then
118 if e>=10000 then pp = 0 end
121 if pp>=10000 then p.penalty = 10000
122 elseif pp<=-10000 then p.penalty = -10000
123 else p.penalty = pp end
129 diffmet_rule = math.two_paverage
130 function math.two_add(a,b) return a+b end
131 function math.two_average(a,b) return (a+b)*0.5 end
132 function math.two_paverage(a,b) return (a+b)*0.5 end
133 function math.two_pleft(a,b) return a end
134 function math.two_pright(a,b) return b end
136 local head -- the head of current list
139 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
141 local ihb_flag -- JFM グルー挿入抑止用 flag
142 -- on: \inhibitglue 指定時,hlist の周囲
144 -------------------- hlist 内の文字の検索
146 local first_char, last_char, find_first_char
148 local function check_box(box_ptr, box_end)
149 local p = box_ptr; local found_visible_node = false
151 find_first_char = false; first_char = nil; last_char = nil
154 while p and p~=box_end do
156 if pid==id_kern and p.subtype==2 then
157 p = node_next(node_next(node_next(p))); pid = p.id -- p must be glyph_node
159 if pid==id_glyph then
161 if find_first_char then
162 first_char = p; find_first_char = false
164 last_char = p; found_visible_node = true; p=node_next(p)
165 if (not p) or p==box_end then return found_visible_node end
167 pid = p.id -- p must be non-nil
170 if get_attr_icflag(p)==IC_PROCESSED then
172 elseif p.subtype==2 then
173 p = node_next(node_next(p));
174 -- Note that another node_next will be executed outside this if-statement.
176 found_visible_node = true
177 if find_first_char then
178 find_first_char = false
183 elseif pid==id_hlist then
184 if PACKED == get_attr_icflag(p) then
185 if find_first_char then
186 first_char = p.head; find_first_char = false
188 last_char = p.head; found_visible_node = true
191 if check_box(p.head, nil) then found_visible_node = true end
192 else if find_first_char then
193 find_first_char = false
199 elseif pid==id_math then
200 if find_first_char then
201 first_char = p; find_first_char = false
203 last_char = p; found_visible_node = true
204 elseif not (pid==id_ins or pid==id_mark
205 or pid==id_adjust or pid==id_whatsit
206 or pid==id_penalty) then
207 found_visible_node = true
208 if find_first_char then
209 find_first_char = false
216 return found_visible_node
219 function check_box_high(Nx, box_ptr, box_end)
220 first_char = nil; last_char = nil; find_first_char = true
221 if check_box(box_ptr, box_end) then
222 local first_char = first_char
224 if first_char.id==glyph_node then
225 if first_char.font == (has_attr(first_char, attr_curjfnt) or -1) then
226 set_np_xspc_jachar(Nx, first_char)
228 set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head)
231 set_np_xspc_alchar(Nx, -1,first_char)
238 -------------------- Np の計算と情報取得
240 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
241 function (Np, lp, Nq)
242 if Np.nuc then return Np
244 return Np -- your code
247 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
248 function (stat, Nq, Np) return false end)
253 local function set_attr_icflag_processed(p)
254 if get_attr_icflag(p)<= ITALIC then
255 set_attr(p, attr_icflag, PROCESSED)
259 local function check_next_ickern(lp)
260 if lp.id == id_kern and ITALIC == get_attr_icflag(lp) then
261 set_attr(lp, attr_icflag, IC_PROCESSED)
262 Np.last = lp; return node_next(lp)
264 Np.last = Np.nuc; return lp
268 local function calc_np_pbox(lp, last)
269 Np.first = Np.first or lp; Np.id = id_pbox
270 local lpa = KINSOKU -- dummy=
271 set_attr(lp, attr_icflag, get_attr_icflag(lp));
272 while lp~=last and lpa>=PACKED and lpa<BOXBDD do
274 lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
275 -- get_attr_icflag() ではいけない!
277 return check_next_ickern(lp)
281 local calc_np_auxtable = {
282 [id_glyph] = function (lp)
283 Np.first, Np.nuc = (Np.first or lp), lp;
284 Np.id = (lp.font == (has_attr(lp, attr_curjfnt) or -1)) and id_jglyph or id_glyph
285 --set_attr_icflag_processed(lp) treated in ltj-setwidth.lua
286 return true, check_next_ickern(node_next(lp));
288 [id_hlist] = function(lp)
289 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
290 set_attr_icflag_processed(lp)
291 Np.id = (lp.shift~=0) and id_box_like or id_hlist
292 return true, node_next(lp)
294 box_like = function(lp)
295 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
296 Np.id = id_box_like; set_attr_icflag_processed(lp);
297 return true, node_next(lp);
300 set_attr_icflag_processed(lp); return false, node_next(lp)
302 [id_whatsit] = function(lp)
303 if lp.subtype==sid_user then
304 if lp.user_id==30111 then
305 local lq = node_next(lp);
306 head = node.remove(head, lp); node.free(lp); ihb_flag = true
309 set_attr_icflag_processed(lp)
310 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
313 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
314 return true, node_next(lp)
316 return false, node_next(lp)
320 -- we do special treatment for these whatsit nodes.
321 if lp.subtype == sid_start_link or lp.subtype == sid_start_thread then
323 elseif lp.subtype == sid_end_link or lp.subtype == sid_end_thread then
324 Np.first, Nq.last = nil, lp;
326 set_attr_icflag_processed(lp); return false, node_next(lp)
329 [id_math] = function(lp)
330 Np.first, Np.nuc = (Np.first or lp), lp;
331 set_attr_icflag_processed(lp); lp = node_next(lp)
332 while lp.id~=id_math do
333 set_attr_icflag_processed(lp); lp = node_next(lp)
335 set_attr_icflag_processed(lp);
336 Np.last, Np.id = lp, id_math;
337 return true, node_next(lp);
339 discglue = function(lp)
340 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
341 Np.id = lp.id; set_attr_icflag_processed(lp); return true, node_next(lp)
343 [id_kern] = function(lp)
344 Np.first = Np.first or lp
345 if lp.subtype==2 then
346 set_attr_icflag_processed(lp); lp = node_next(lp)
347 set_attr_icflag_processed(lp); lp = node_next(lp)
348 set_attr_icflag_processed(lp); lp = node_next(lp)
349 set_attr_icflag_processed(lp); Np.nuc = lp
350 Np.id = (lp.font == (has_attr(lp, attr_curjfnt) or -1)) and id_jglyph or id_glyph
351 return true, check_next_ickern(node_next(lp));
353 Np.id = id_kern; set_attr_icflag_processed(lp);
354 Np.last = lp; return true, node_next(lp)
357 [id_penalty] = function(lp)
358 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
359 return false, node_next(lp)
362 calc_np_auxtable[id_vlist] = calc_np_auxtable.box_like
363 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
364 calc_np_auxtable[13] = calc_np_auxtable.box_like
365 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
366 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
367 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
368 calc_np_auxtable[id_disc] = calc_np_auxtable.discglue
369 calc_np_auxtable[id_glue] = calc_np_auxtable.discglue
372 function calc_np(lp, last)
374 -- We assume lp = node_next(Np.last)
375 Np, Nq, ihb_flag = Nq, Np, false
376 -- We clear `predefined' entries of Np before pairs() loop,
377 -- because using only pairs() loop is slower.
378 Np.post, Np.pre, Np.xspc = nil, nil, nil
379 Np.first, Np.id, Np.last, Np.met = nil, nil, nil
380 Np.auto_kspc, Np.auto_xspc, Np.char, Np.class, Np.nuc = nil, nil, nil, nil, nil
381 for k in pairs(Np) do Np[k] = nil end
383 for k = 1,#Bp do Bp[k] = nil end
385 local lpa = has_attr(lp, attr_icflag) or 0
388 if lpa == BOXBDD then
389 local lq = node_next(lp)
390 head = node.remove(head, lp); node.free(lp); lp = lq
391 else return calc_np_pbox(lp, last)
394 k, lp = calc_np_auxtable[lp.id](lp)
395 if k then return lp end
402 local calc_np = calc_np
404 -- extract informations from Np
405 -- We think that "Np is a Japanese character" if Np.met~=nil,
406 -- "Np is an alphabetic character" if Np.pre~=nil,
407 -- "Np is not a character" otherwise.
411 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
412 local attr_orig_char = luatexbase.attributes['ltj@origchar']
413 local attr_autospc = luatexbase.attributes['ltj@autospc']
414 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
415 function set_np_xspc_jachar(Nx, x)
416 local m = ltjf_font_metric_table[x.font]
417 local cls, c = slow_find_char_class(has_attr(x, attr_orig_char), m, x.char)
418 Nx.class = cls; set_attr(x, attr_jchar_class, cls)
419 Nx.met, Nx.char = m, c
420 local t = ltjs.fast_get_penalty_table_parent(c)
422 Nx.post = t.post or 0
424 Nx.kcat = t.kcat or 0
425 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
427 local set_np_xspc_jachar = set_np_xspc_jachar
430 local floor = math.floor
431 function set_np_xspc_alchar(Nx, c,x, lig)
433 local xc, xs = x.components, x.subtype
434 if lig == ligature_head then
435 while xc and xs and xs%4>=2 do
436 x = xc; xc, xs = x.components, x.subtype
440 while xc and xs and xs%4>=2 do
441 x = node.tail(xc); xc, xs = x.components, x.subtype
445 local t = ltjs.fast_get_penalty_table_parent(c)
447 Nx.post = t.post or 0
451 Nx.pre, Nx.post, Nx.char = 0, 0, -1
452 Nx.xspc = ltjs_fast_get_penalty_table('xsp', -1) or 3
455 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
457 local set_np_xspc_alchar = set_np_xspc_alchar
460 function extract_np()
461 local x, i = Np.nuc, Np.id;
462 if i == id_jglyph then return set_np_xspc_jachar(Np, x)
463 elseif i == id_glyph then return set_np_xspc_alchar(Np, x.char, x, ligature_head)
464 elseif i == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
465 elseif i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node_next(Np.last))
466 elseif i == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
467 elseif i == id_math then return set_np_xspc_alchar(Np, -1, x)
471 -- change the information for the next loop
472 -- (will be done if Nx is an alphabetic character or a hlist)
473 function after_hlist(Nx)
474 local s = Nx.last_char
476 if s.id==glyph_node then
477 if s.font == (has_attr(s, attr_curjfnt) or -1) then
478 set_np_xspc_jachar(Nx, s)
480 set_np_xspc_alchar(Nx, s.char, s, ligature_tail)
483 set_np_xspc_alchar(Nx, -1, s)
486 Nx.pre, Nx.met = nil, nil
490 function after_alchar(Nx)
492 return set_np_xspc_alchar(Nx, x.char,x, ligature_tail)
496 local after_hlist, after_alchar, extract_np = after_hlist, after_alchar, extract_np
498 -------------------- 最下層の処理
500 -- change penalties (or create a new penalty, if needed)
501 local function handle_penalty_normal(post, pre, g)
502 local a = (pre or 0) + (post or 0)
504 if (a~=0 and not(g and g.id==id_kern)) then
505 local p = node_new(id_penalty); --copy_attr(p, Nq.nuc)
506 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
508 head = insert_before(head, Np.first, p)
510 set_attr(p, attr_icflag, KINSOKU)
512 else for _, v in pairs(Bp) do add_penalty(v,a) end
516 local function handle_penalty_always(post, pre, g)
517 local a = (pre or 0) + (post or 0)
519 if not (g and g.id==id_glue) then
520 local p = node_new(id_penalty); --copy_attr(p, Nq.nuc)
521 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
523 head = insert_before(head, Np.first, p)
525 set_attr(p, attr_icflag, KINSOKU)
527 else for _, v in pairs(Bp) do add_penalty(v,a) end
531 local function handle_penalty_suppress(post, pre, g)
532 local a = (pre or 0) + (post or 0)
534 if g and g.id==id_glue then
535 local p = node_new(id_penalty); --copy_attr(p, Nq.nuc)
536 p.penalty = 10000; head = insert_before(head, Np.first, p)
538 set_attr(p, attr_icflag, KINSOKU)
540 else for _, v in pairs(Bp) do add_penalty(v,a) end
544 -- 和文文字間の JFM glue を node 化
545 local function new_jfm_glue(m, bc, ac)
546 -- bc, ac: char classes
547 local z = m.size_cache.char_type[bc]
548 local g, d = z.glue[ac], 0
550 g,d = node_copy(g[1]), g[2];
551 g.spec = node_copy(g.spec); -- node_copy は spec をコピーする
555 g = node_new(id_kern); --copy_attr(g, Nn.nuc)
556 g.subtype = 1; g.kern, d = k[1], k[2]
557 set_attr(g, attr_icflag, FROM_JFM);
563 -- Nq.last (kern w) .... (glue/kern g) Np.first
564 local function real_insert(w, g)
566 head = insert_before(head, Np.first, g)
572 -------------------- 和文文字間空白量の決定
577 local function get_kanjiskip_normal()
578 if Np.auto_kspc or Nq.auto_kspc then
579 return node_copy(kanji_skip)
581 local g = node_copy(zero_glue)
582 set_attr(g, attr_icflag, KANJI_SKIP)
586 local function get_kanjiskip_jfm()
588 if Np.auto_kspc or Nq.auto_kspc then
589 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
590 local gx = node_new(id_glue_spec);
591 gx.stretch_order, gx.shrink_order = 0, 0
592 local pm, qm = Np.met, Nq.met
593 local bk = qm.size_cache.kanjiskip or {0, 0, 0}
594 if (pm.size_cache==qm.size_cache) and (qm.var==pm.var) then
595 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
597 local ak = pm.size_cache.kanjiskip or {0, 0, 0}
598 gx.width = round(diffmet_rule(bk[1], ak[1]))
599 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
600 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
604 g = node_copy(zero_glue)
606 set_attr(g, attr_icflag, KANJI_SKIP)
610 local function calc_ja_ja_aux(gb,ga, db, da)
611 local rbb, rab = (1-db)/2, (1-da)/2 -- 「前の文字」由来のグルーの割合
612 local rba, raa = (1+db)/2, (1+da)/2 -- 「前の文字」由来のグルーの割合
613 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
614 and diffmet_rule ~= math.two_paverage then
615 rbb, rab, rba, raa = 1,0,0,1
618 if ga then gb = node_new(id_kern); gb.kern = 0 else return nil end
620 ga = node_new(id_kern); ga.kern = 0
623 local k = node.type(gb.id) .. node.type(ga.id)
624 if k == 'glueglue' then
626 gb.spec.width = round(diffmet_rule(
627 rbb*gb.spec.width + rba*ga.spec.width,
628 rab*gb.spec.width + raa*ga.spec.width ))
629 gb.spec.stretch = round(diffmet_rule(
630 rbb*gb.spec.stretch + rba*ga.spec.stretch,
631 rab*gb.spec.stretch + raa*ga.spec.stretch ))
632 gb.spec.shrink = -round(diffmet_rule(
633 -rbb*gb.spec.shrink - rba*ga.spec.shrink,
634 -rab*gb.spec.shrink - raa*ga.spec.shrink ))
637 elseif k == 'kernkern' then
639 gb.kern = round(diffmet_rule(
640 rbb*gb.kern + rba*ga.kern,
641 rab*gb.kern + raa*ga.kern ))
644 elseif k == 'kernglue' then
645 -- gb: kern, ga: glue
646 ga.spec.width = round(diffmet_rule(
647 rbb*gb.kern + rba*ga.spec.width,
648 rab*gb.kern + raa*ga.spec.width ))
649 ga.spec.stretch = round(diffmet_rule(
650 rba*ga.spec.stretch, raa*ga.spec.stretch ))
651 ga.spec.shrink = -round(diffmet_rule(
652 -rba*ga.spec.shrink,-raa*ga.spec.shrink ))
656 -- gb: glue, ga: kern
657 gb.spec.width = round(diffmet_rule(
658 rba*ga.kern + rbb*gb.spec.width,
659 raa*ga.kern + rab*gb.spec.width ))
660 gb.spec.stretch = round(diffmet_rule(
661 rbb*gb.spec.stretch, rab*gb.spec.stretch ))
662 gb.spec.shrink = -round(diffmet_rule(
663 -rbb*gb.spec.shrink,-rab*gb.spec.shrink ))
669 local function calc_ja_ja_glue()
670 if ihb_flag then return nil
672 local qm, pm = Nq.met, Np.met
673 if (qm.size_cache==pm.size_cache) and (qm.var==pm.var) then
674 return new_jfm_glue(qm, Nq.class, Np.class)
676 local npn, nqn = Np.nuc, Nq.nuc
677 local gb, db = new_jfm_glue(qm, Nq.class,
678 slow_find_char_class(has_attr(npn, attr_orig_char), qm, npn.char))
679 local ga, da = new_jfm_glue(pm,
680 slow_find_char_class(has_attr(nqn, attr_orig_char), pm, nqn.char),
682 return calc_ja_ja_aux(gb, ga, db, da);
687 -------------------- 和欧文間空白量の決定
691 local function get_xkanjiskip_normal(Nn)
692 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
693 return node_copy(xkanji_skip)
695 local g = node_copy(zero_glue)
696 set_attr(g, attr_icflag, XKANJI_SKIP)
700 local function get_xkanjiskip_jfm(Nn)
702 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
703 g = node_new(id_glue); --copy_attr(g, Nn.nuc)
704 local gx = node_new(id_glue_spec);
705 gx.stretch_order, gx.shrink_order = 0, 0
706 local bk = Nn.met.size_cache.xkanjiskip or {0, 0, 0}
707 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
710 g = node_copy(zero_glue)
712 set_attr(g, attr_icflag, XKANJI_SKIP)
718 -------------------- 隣接した「塊」間の処理
720 local function get_OA_skip()
723 return new_jfm_glue(pm,
724 fast_find_char_class(((Nq.id == id_math and -1) or 'jcharbdd'), pm), Np.class)
728 local function get_OB_skip()
731 return new_jfm_glue(qm, Nq.class,
732 fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), qm))
737 -- (anything) .. jachar
738 local function handle_np_jachar(mode)
740 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
741 local g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
742 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
743 elseif Nq.met then -- qid==id_hlist
744 local g = get_OA_skip() or get_kanjiskip() -- O_A->K
745 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
747 local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
748 if qid==id_hlist then Nq.post = 0 end
749 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
751 local g = get_OA_skip() -- O_A
752 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
753 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
754 else handle_penalty_always(0, Np.pre, g)
758 if mode and Np.kcat%2~=1 then
759 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
764 -- jachar .. (anything)
765 local function handle_nq_jachar()
767 if Np.id==id_hlist then Np.pre = 0 end
768 local g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
769 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
771 local g = get_OB_skip() -- O_B
772 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
773 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
774 else handle_penalty_always(Nq.post, 0, g)
780 -- (anything) .. (和文文字で始まる hlist)
781 local function handle_np_ja_hlist()
783 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
784 local g = get_OB_skip() or get_kanjiskip() -- O_B->K
785 handle_penalty_normal(Nq.post, 0, g); real_insert(0, g)
786 elseif Nq.met then -- Nq.id==id_hlist
787 local g = get_kanjiskip() -- K
788 handle_penalty_suppress(0, 0, g); real_insert(0, g)
790 local g = get_xkanjiskip(Np) -- X
791 handle_penalty_suppress(0, 0, g); real_insert(0, g)
795 -- (和文文字で終わる hlist) .. (anything)
796 local function handle_nq_ja_hlist()
798 local g = get_xkanjiskip(Nq) -- X
799 handle_penalty_suppress(0, 0, g); real_insert(0, g)
803 -- Nq が前側のクラスタとなることによる修正
804 local function adjust_nq()
805 if Nq.id==id_glyph then after_alchar(Nq)
806 elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
807 elseif Nq.id == id_pbox_w then
808 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
813 -------------------- 開始・終了時の処理
816 local function handle_list_tail(mode)
819 -- the current list is to be line-breaked.
820 -- Insert \jcharwidowpenalty
821 Bp = widow_Bp; Np = widow_Np
823 handle_penalty_normal(0,
824 ltjs_fast_get_penalty_table('jwp', 0) or 0)
827 -- the current list is the contents of a hbox
828 local npi, pm = Np.id, Np.met
829 if npi == id_jglyph or (npi==id_pbox and pm) then
830 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
832 set_attr(g, attr_icflag, BOXBDD)
833 head = node.insert_after(head, Np.last, g)
840 local function handle_list_head(par_indented)
841 local npi, pm = Np.id, Np.met
842 if npi == id_jglyph or (npi==id_pbox and pm) then
844 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
846 set_attr(g, attr_icflag, BOXBDD)
847 if g.id==id_glue and #Bp==0 then
848 local h = node_new(id_penalty); --copy_attr(h, Np.nuc)
849 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
851 head = insert_before(head, Np.first, g)
858 -- return value: (the initial cursor lp), (last node)
859 local function init_var(mode)
860 Bp, widow_Bp, widow_Np = {}, {}, {first = nil}
862 kanji_skip = node_new(id_glue)
863 kanji_skip.spec = skip_table_to_spec('kanjiskip')
864 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
865 get_kanjiskip = (kanji_skip.spec.width == max_dimen)
866 and get_kanjiskip_jfm or get_kanjiskip_normal
868 xkanji_skip = node_new(id_glue)
869 xkanji_skip.spec = skip_table_to_spec('xkanjiskip')
870 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
871 get_xkanjiskip = (xkanji_skip.spec.width == max_dimen)
872 and get_xkanjiskip_jfm or get_xkanjiskip_normal
875 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
876 first=nil, id=nil, last=nil, met=nil, nuc=nil,
877 post=nil, pre=nil, xspc=nil,
880 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
881 first=nil, id=nil, last=nil, met=nil, nuc=nil,
882 post=nil, pre=nil, xspc=nil,
885 -- the current list is to be line-breaked:
886 -- hbox from \parindent is skipped.
887 local lp, par_indented, lpi, lps = head, 'boxbdd', head.id, head.subtype
888 while lp and ((lpi==id_whatsit and lps~=sid_user)
889 or ((lpi==id_hlist) and (lps==3))) do
890 if (lpi==id_hlist) and (lps==3) then par_indented = 'parbdd' end
891 lp=node_next(lp); lpi, lps = lp.id, lp.subtype end
892 return lp, node.tail(head), par_indented
894 -- the current list is the contents of a hbox:
896 local g = node_new(id_kern)
897 node.insert_after(head, node.tail(head), g); last = g
898 return head, g, 'boxbdd'
902 local function cleanup(mode, last)
903 -- adjust attr_icflag for avoiding error
904 tex.setattribute('global', attr_icflag, 0)
905 node.free(kanji_skip); node.free(xkanji_skip)
907 local h = node_next(head)
908 if h.id == id_penalty and h.penalty == 10000 then
910 if h.id == id_glue and h.subtype == 15 and not h.next then
916 head = node.remove(head, last); node.free(last);-- remove the sentinel
917 set_attr(head, attr_icflag,
918 get_attr_icflag(head) + PROCESSED_BEGIN_FLAG);
922 -------------------- 外部から呼ばれる関数
925 function main(ahead, mode)
926 if not ahead then return ahead end
928 local lp, last, par_indented = init_var(mode);
929 lp = calc_np(lp, last)
931 extract_np(); handle_list_head(par_indented)
933 return cleanup(mode, last)
935 lp = calc_np(lp, last)
937 extract_np(); adjust_nq()
938 local pid, pm = Np.id, Np.met
940 if pid == id_jglyph then
941 handle_np_jachar(mode)
943 if pid==id_hlist then handle_np_ja_hlist()
944 else handle_np_jachar() end
946 if Nq.id==id_hlist then handle_nq_ja_hlist()
947 else handle_nq_jachar() end
949 lp = calc_np(lp, last)
951 handle_list_tail(mode)
952 return cleanup(mode, last)
957 function create_inhibitglue_node()
958 local tn = node_new(id_whatsit, sid_user)
959 tn.user_id=30111; tn.type=100; tn.value=1
963 -- Node for indicating beginning of a paragraph
965 function create_beginpar_node()
966 local tn = node_new(id_whatsit, sid_user)
967 tn.user_id=30114; tn.type=100; tn.value=1
973 local function whatsit_callback(Np, lp, Nq)
974 if Np and Np.nuc then return Np
975 elseif Np and lp.user_id == 30114 then
976 Np.first = lp; Np.nuc = lp; Np.last = lp
979 Np.pre = 0; Np.post = 0
987 local function whatsit_after_callback(s, Nq, Np)
988 if not s and Nq.nuc.user_id == 30114 then
989 local x, y = node.prev(Nq.nuc), Nq.nuc
990 Nq.first, Nq.nuc, Nq.last = x, x, x
991 head = node.remove(head, y)
996 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
997 "luatexja.beginpar.np_info", 1)
998 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
999 "luatexja.beginpar.np_info_after", 1)