4 luatexbase.provides_module({
5 name = 'luatexja.jfmglue',
7 description = 'Insertion process of JFM glues, [x]kanjiskip and others',
9 luatexja.jfmglue = luatexja.jfmglue or {}
11 luatexja.load_module 'base'; local ltjb = luatexja.base
12 luatexja.load_module 'stack'; local ltjs = luatexja.stack
13 luatexja.load_module 'jfont'; local ltjf = luatexja.jfont
14 luatexja.load_module 'direction'; local ltjd = luatexja.direction
15 luatexja.load_module 'setwidth'; local ltjw = luatexja.setwidth
16 luatexja.load_module 'lotf_aux'; local ltju = luatexja.lotf_aux
19 --local to_node = node.direct.tonode
20 --local to_direct = node.direct.todirect
22 local setfield = node.direct.setfield
23 local setglue = luatexja.setglue
24 local getfield = node.direct.getfield
25 local getid = node.direct.getid
26 local getfont = node.direct.getfont
27 local getlist = node.direct.getlist
28 local getchar = node.direct.getchar
29 local getsubtype = node.direct.getsubtype
32 local lang_ja = luatexja.lang_ja
33 local getlang = node.direct.getlang
34 -- glyph with font number 0 (\nullfont) is always considered an ALchar node
36 and function (n) return (getlang(n)==lang_ja)and(getfont(n)~=0) end
37 or function (n) return (getfield(n,'lang')==lang_ja)and(getfont(n)~=0) end
40 local has_attr = node.direct.has_attribute
41 local set_attr = node.direct.set_attribute
42 local insert_before = node.direct.insert_before
43 local insert_after = node.direct.insert_after
44 local node_next = node.direct.getnext
45 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
46 local ltjf_font_metric_table = ltjf.font_metric_table
47 local ltjf_find_char_class = ltjf.find_char_class
48 local node_new = node.direct.new
49 local node_copy = node.direct.copy
50 local node_tail = node.direct.tail
51 local node_free = node.direct.free
52 local node_remove = node.direct.remove
54 local id_glyph = node.id 'glyph'
55 local id_hlist = node.id 'hlist'
56 local id_vlist = node.id 'vlist'
57 local id_rule = node.id 'rule'
58 local id_ins = node.id 'ins'
59 local id_mark = node.id 'mark'
60 local id_adjust = node.id 'adjust'
61 local id_disc = node.id 'disc'
62 local id_whatsit = node.id 'whatsit'
63 local id_math = node.id 'math'
64 local id_glue = node.id 'glue'
65 local id_kern = node.id 'kern'
66 local id_penalty = node.id 'penalty'
68 local id_jglyph = 512 -- Japanese character
69 local id_box_like = 256 -- vbox, shifted hbox
70 local id_pbox = 257 -- already processed nodes (by \unhbox)
71 local id_pbox_w = 258 -- cluster which consists of a whatsit
72 local sid_user = node.subtype 'user_defined'
74 local ITALIC = luatexja.icflag_table.ITALIC
75 local PACKED = luatexja.icflag_table.PACKED
76 local KINSOKU = luatexja.icflag_table.KINSOKU
77 local FROM_JFM = luatexja.icflag_table.FROM_JFM
78 local PROCESSED = luatexja.icflag_table.PROCESSED
79 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
80 local BOXBDD = luatexja.icflag_table.BOXBDD
81 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
83 local attr_icflag = luatexbase.attributes['ltj@icflag']
86 local table_current_stack
91 local set_np_xspc_jachar, set_np_xspc_alchar
92 local set_np_xspc_jachar_hbox
94 local ltjs_orig_char_table = ltjs.orig_char_table
96 local function get_attr_icflag(p)
97 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
100 -------------------- Helper functions
102 -- This function is called only for acquiring `special' characters.
103 local function fast_find_char_class(c,m)
104 return m.chars[c] or 0
108 local slow_find_char_class
110 local start_time_measure = ltjb.start_time_measure
111 local stop_time_measure = ltjb.stop_time_measure
112 slow_find_char_class = function (c, m, oc)
113 local cls = ltjf_find_char_class(oc, m)
114 if oc~=c and c and cls==0 then
115 return ltjf_find_char_class(c, m)
122 local function skip_table_to_glue(n)
123 local g, st = node_new(id_glue), ltjs.fast_get_stack_skip(n)
124 setglue(g, st.width, st.stretch, st.shrink, st.stretch_order, st.shrink_order)
125 return g, (st.width==1073741823)
132 local setpenalty = node.direct.setpenalty or function(n, a) setfield(n,'penalty',a) end
133 local getpenalty = node.direct.getpenalty or function(n) return getfield(n,'penalty') end
134 function add_penalty(p,e)
135 local pp = getpenalty(p)
136 if (pp>-10000) and (pp<10000) then
137 if e>=10000 then setpenalty(p, 10000)
138 elseif e<=-10000 then setpenalty(p, -10000)
141 if pp>=10000 then setpenalty(p, 10000)
142 elseif pp<=-10000 then setpenalty(p, -10000)
143 else setpenalty(p, pp) end
150 luatexja.jfmglue.diffmet_rule = math.two_paverage
151 function math.two_add(a,b) return a+b end
152 function math.two_average(a,b) return (a+b)*0.5 end
153 function math.two_paverage(a,b) return (a+b)/2 end
154 function math.two_pleft(a,b) return a end
155 function math.two_pright(a,b) return b end
157 local head -- the head of current list
160 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
162 local non_ihb_flag -- JFM グルー挿入抑止用 flag
163 -- false: \inhibitglue 指定時 true: それ以外
165 -------------------- hlist 内の文字の検索
167 local first_char, last_char, find_first_char
170 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
171 local function check_box(box_ptr, box_end)
172 local p = box_ptr; local found_visible_node = false
174 find_first_char = false; last_char = nil
177 while p and p~=box_end do
179 if pid==id_kern and getsubtype(p)==2 then
180 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
182 if pid==id_glyph then
184 if find_first_char then first_char = p; find_first_char = false end
185 last_char = p; found_visible_node = true; p=node_next(p)
186 if (not p) or p==box_end then return found_visible_node end
187 until getid(p)~=id_glyph
188 pid = getid(p) -- p must be non-nil
191 local pa = get_attr_icflag(p)
192 if pa==IC_PROCESSED then
194 elseif getsubtype(p)==2 then
195 p = node_next(node_next(p));
196 -- Note that another node_next will be executed outside this if-statement.
198 found_visible_node = true
199 find_first_char = false; last_char = nil
201 elseif pid==id_hlist then
202 if PACKED == get_attr_icflag(p) then
203 local s = ltjd_glyph_from_packed(p)
204 if find_first_char then first_char = s; find_first_char = false end
205 last_char = s; found_visible_node = true
207 if getfield(p, 'shift')==0 then
209 if check_box(getlist(p), nil) then found_visible_node = true end
210 find_first_char = false
212 find_first_char = false; last_char = nil
215 elseif pid==id_math then
216 if find_first_char then first_char = p; find_first_char = false end
217 last_char = p; found_visible_node = true
218 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
220 elseif not (pid==id_ins or pid==id_mark
221 or pid==id_adjust or pid==id_whatsit
222 or pid==id_penalty) then
223 found_visible_node = true
224 find_first_char = false; last_char = nil
228 return found_visible_node
231 check_box_high = function (Nx, box_ptr, box_end)
232 first_char = nil; last_char = nil; find_first_char = true
233 if check_box(box_ptr, box_end) then
234 local first_char = first_char
236 if getid(first_char)==id_glyph then
237 if if_lang_ja(first_char) then
238 set_np_xspc_jachar_hbox(Nx, first_char)
240 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
243 set_np_xspc_alchar(Nx, -1,first_char)
250 -------------------- Np の計算と情報取得
252 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
253 function (Np, lp, Nq)
254 if Np.nuc then return Np
256 return Np -- your code
259 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
260 function (stat, Nq, Np) return false end)
264 do -- 001 -----------------------------------------------
266 local traverse = node.direct.traverse
267 local function check_next_ickern(lp)
269 while lp and getid(lp) == id_kern and ( getsubtype(lp)==0 or
270 getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) do
271 set_attr(lp, attr_icflag, IC_PROCESSED);
272 lx, lp = lp, node_next(lp)
274 Np.last = lx; return lp
277 local function calc_np_pbox(lp, last)
278 local first, nc = (not Np.first), nil
279 --local lpa = get_attr_icflag(lp)==PACKED and PACKED or KINSOKU -- KINSOKU: dummy
280 local lpa = get_attr_icflag(lp)
281 Np.first = Np.first or lp; Np.id = id_pbox
282 set_attr(lp, attr_icflag, get_attr_icflag(lp));
283 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
284 local lpi = getid(lp)
286 if lpi==id_rule then lp = node_next(lp) end
287 nc, lp = lp, node_next(lp)
288 elseif lpi==id_hlist or lpi==id_vlist then
289 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
290 Np.first = first and nc or Np.first
292 nc, lp = lp, node_next(lp)
294 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
295 -- get_attr_icflag() ではいけない!
298 lp = check_next_ickern(lp)
299 Np.last_char = check_box_high(Np, Np.first, lp)
303 local calc_np_aux_glyph_common
304 do -- 002 ---------------------------------------
305 local min, max = math.min, math.max
306 local getwhd = node.direct.getwhd
307 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
308 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
309 local font_getfont = font.getfont
310 local function calc_np_notdef(lp)
311 if not font_getfont(getfont(lp)).characters[getchar(lp)] then
312 local ln = node_next(lp)
313 if ltju.specified_feature(getfont(lp), 'notdef') and ln and getid(ln)==id_glyph then
314 set_attr(lp, attr_icflag, PROCESSED)
315 set_attr(ln, attr_jchar_code, has_attr(lp, attr_jchar_code) or getchar(lp))
316 set_attr(ln, attr_jchar_class, has_attr(lp, attr_jchar_class) or 0)
322 function calc_np_aux_glyph_common(lp, acc_flag)
323 Np.nuc, Np.first = lp, (Np.first or lp)
324 if if_lang_ja(lp) then -- JAchar
326 local m, mc, cls = set_np_xspc_jachar(Np, lp)
328 local w, h, d = getwhd(lp)
329 if w==0 and h==0 and d==0 then lp = calc_np_notdef(lp) end
330 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
331 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
333 return true, check_next_ickern(lp);
336 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
338 local first_glyph, last_glyph = lp
339 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
340 local y_adjust = has_attr(lp,attr_ablshift) or 0
341 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
342 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
343 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
345 for lx in traverse(lp) do
346 local lai = get_attr_icflag(lx)
347 if lx==last or lai>=PACKED then
350 local lid = getid(lx)
351 if lid==id_glyph and not if_lang_ja(lx) then
353 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
354 y_adjust = has_attr(lx,attr_ablshift) or 0
355 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
356 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
357 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
358 elseif lid==id_kern then
359 local ls = getsubtype(lx)
360 if ls==2 then -- アクセント用の kern
361 set_attr(lx, attr_icflag, PROCESSED)
362 lx = node_next(lx) -- lx: アクセント本体
363 if getid(lx)==id_glyph then
364 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
365 else -- アクセントは上下にシフトされている
366 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
368 lx = node_next(node_next(lx))
371 elseif (ls==3) or (lai==ITALIC) then
372 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
382 if adj_depth>node_depth then
383 r = node_new(id_rule,3)
384 setfield(r, 'width', 0); setfield(r, 'height', 0)
385 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
386 set_attr(r, attr_icflag, PROCESSED)
389 Np.last_char = last_glyph
390 if r then insert_after(head, first_glyph, r) end
395 local nf, nc = getfont(npn), getchar(npn)
396 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
397 if not ct then -- variation selector
399 elseif (ct.left_protruding or 0) == 0 then
400 head = insert_before(head, npn, r)
401 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
402 elseif (ct.right_protruding or 0) == 0 then
403 insert_after(head, npn, r); Np.last, lp = r, r
405 ltjb.package_warning_no_line(
407 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
408 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
409 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
417 end -- 002 ---------------------------------------
418 local calc_np_auxtable
419 do -- 002 ---------------------------------------
420 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
421 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
422 local node_end_of_math = node.direct.end_of_math
423 local dir_tate = luatexja.dir_table.dir_tate
424 local sid_start_link = node.subtype 'pdf_start_link'
425 local sid_start_thread = node.subtype 'pdf_start_thread'
426 local sid_end_link = node.subtype 'pdf_end_link'
427 local sid_end_thread = node.subtype 'pdf_end_thread'
429 [id_glyph] = calc_np_aux_glyph_common,
430 [id_hlist] = function(lp)
432 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
433 set_attr(op, attr_icflag, PROCESSED)
434 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
435 if (flag or getfield(op, 'shift')~=0) then
439 Np.last_char = check_box_high(Np, getlist(op), nil)
443 [id_vlist] = function(lp)
445 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
446 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
450 box_like = function(lp)
451 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
453 return true, node_next(lp)
455 [id_whatsit] = function(lp)
456 local lps = getsubtype(lp)
457 if lps==sid_user then
458 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
459 local lq = node_next(lp);
460 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
462 elseif getfield(lp, 'user_id')==luatexja.userid_table.JA_AL_BDD then
463 local lq = node_next(lp);
464 head = node_remove(head, lp); node_free(lp)
467 set_attr(lp, attr_icflag, PROCESSED)
468 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
471 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
472 return true, node_next(lp)
474 return false, node_next(lp)
478 -- we do special treatment for these whatsit nodes.
479 if lps == sid_start_link or lps == sid_start_thread then
481 elseif lps == sid_end_link or lps == sid_end_thread then
482 Np.first, Nq.last = nil, lp;
484 set_attr(lp, attr_icflag, PROCESSED)
485 return false, node_next(lp)
488 [id_math] = function(lp)
489 Np.first, Np.nuc = (Np.first or lp), lp;
490 set_attr(lp, attr_icflag, PROCESSED)
491 set_np_xspc_alchar(Np, -1, lp)
492 local end_math = node_end_of_math(lp)
493 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
494 set_attr(end_math, attr_icflag, PROCESSED)
495 Np.last, Np.id = end_math, id_math;
496 return true, node_next(end_math);
498 [id_glue] = function(lp)
499 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
500 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
501 return true, node_next(lp)
503 [id_disc] = function(lp)
504 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
505 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
506 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
507 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
508 return true, node_next(lp)
510 [id_kern] = function(lp)
511 if getsubtype(lp)==2 then
512 Np.first = Np.first or lp
513 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
514 if getid(lp)==id_glyph then -- アクセント本体
515 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
516 else -- アクセントは上下にシフトされている
517 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
519 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
520 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
521 set_attr(lp, attr_icflag, PROCESSED);
522 return calc_np_aux_glyph_common(lp, true)
524 Np.first = Np.first or lp
525 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
526 Np.last = lp; return true, node_next(lp)
529 [id_penalty] = function(lp)
530 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
531 return false, node_next(lp)
534 end -- 002 ---------------------------------------
535 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
536 calc_np_auxtable[15] = calc_np_auxtable.box_like
538 local function calc_np_aux_skip (lp)
539 set_attr(lp, attr_icflag, PROCESSED)
540 return false, node_next(lp)
543 function calc_np(last, lp)
545 -- We assume lp = node_next(Np.last)
546 Np, Nq, non_ihb_flag = Nq, Np, true
547 -- We clear `predefined' entries of Np before pairs() loop,
548 -- because using only pairs() loop is slower.
549 Np.post, Np.pre, Np.xspc = nil, nil, nil
550 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
551 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
552 -- auto_kspc, auto_xspc: normally true/false,
553 -- but the number 0 when Np is ''the beginning of the box/paragraph''.
554 for k in pairs(Np) do Np[k] = nil end
556 for k = 1,#Bp do Bp[k] = nil end
558 local lpa = has_attr(lp, attr_icflag) or 0
561 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
562 local lq = node_next(lp)
563 head = node_remove(head, lp); node_free(lp); lp = lq
565 return calc_np_pbox(lp, last)
568 k, lp = (calc_np_auxtable[getid(lp)] or calc_np_aux_skip)(lp)
569 if k then return lp end
574 end -- 001 -----------------------------------------------
576 -- extract informations from Np
577 -- We think that "Np is a Japanese character" if Np.met~=nil,
578 -- "Np is an alphabetic character" if Np.pre~=nil,
579 -- "Np is not a character" otherwise.
580 local after_hlist = nil -- global
581 local after_alchar, extract_np
583 local PRE = luatexja.stack_table_index.PRE
584 local POST = luatexja.stack_table_index.POST
585 local KCAT = luatexja.stack_table_index.KCAT
586 local XSP = luatexja.stack_table_index.XSP
587 local dir_tate = luatexja.dir_table.dir_tate
590 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
591 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
592 local attr_autospc = luatexbase.attributes['ltj@autospc']
593 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
594 local getcomponents = node.direct.getcomponents
595 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
596 function set_np_xspc_jachar(Nx, x)
597 local m = ltjf_font_metric_table[getfont(x)]
598 local c, c_glyph = (not getcomponents(x) and ltjs_orig_char_table[x]), getchar(x)
599 if c and c~=c_glyph then set_attr(x, attr_jchar_code, c) end
601 local cls = slow_find_char_class(c, m, c_glyph)
602 Nx.met, Nx.class, Nx.char = m, cls, c;
603 local mc = m.char_type; Nx.char_type = mc
604 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
605 Nx.pre = table_current_stack[PRE + c] or 0
606 Nx.post = table_current_stack[POST + c] or 0
607 Nx.xspc = table_current_stack[XSP + c] or 3
608 Nx.kcat = table_current_stack[KCAT + c] or 0
609 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
612 function set_np_xspc_jachar_hbox(Nx, x)
613 local m = ltjf_font_metric_table[getfont(x)]
614 local c = has_attr(x, attr_jchar_code) or getchar(x)
615 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
616 local mc = m.char_type; Nx.char_type = mc
617 Nx.pre = table_current_stack[PRE + c] or 0
618 Nx.post = table_current_stack[POST + c] or 0
619 Nx.xspc = table_current_stack[XSP + c] or 3
620 Nx.kcat = table_current_stack[KCAT + c] or 0
621 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
625 local floor = math.floor
626 local nullfunc = function(n) return n end
627 function set_np_xspc_alchar(Nx, c,x, lig)
629 local f = (lig ==1) and nullfunc or node_tail
630 local xc, xs = getcomponents(x), getsubtype(x)
631 while xc and xs and xs%4>=2 do
633 if getid(x)==id_disc then x, xc, xs = nil, getfield(x,'replace'), 2
634 else xc, xs = getcomponents(x), getsubtype(x) end
636 c = x and getchar(x) or c
637 Nx.pre = table_current_stack[PRE + c] or 0
638 Nx.post = table_current_stack[POST + c] or 0
640 Nx.pre, Nx.post = 0, 0
643 Nx.xspc = table_current_stack[XSP + c] or 3
644 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
646 local set_np_xspc_alchar = set_np_xspc_alchar
647 -- change the information for the next loop
648 -- (will be done if Nx is an alphabetic character or a hlist)
649 after_hlist = function (Nx)
650 local s = Nx.last_char
652 if getid(s)==id_glyph then
653 if if_lang_ja(s) then
654 set_np_xspc_jachar_hbox(Nx, s)
656 set_np_xspc_alchar(Nx, getchar(s), s, 2)
659 set_np_xspc_alchar(Nx, -1, s)
662 Nx.pre, Nx.met = nil, nil
665 after_alchar = function (Nx)
666 local x = Nx.last_char
667 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
672 -------------------- 最下層の処理
674 luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', function(n) return n end)
676 -- change penalties (or create a new penalty, if needed)
677 local function handle_penalty_normal(post, pre, g)
678 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
679 local a = (pre or 0) + (post or 0)
681 if (a~=0 and not(g and getid(g)==id_kern)) then
682 local p = node_new(id_penalty)
683 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
684 setfield(p, 'penalty', a); head = insert_before(head, Np.first, p)
685 Bp[1]=p; set_attr(p, attr_icflag, KINSOKU)
687 else for _, v in pairs(Bp) do add_penalty(v,a) end
691 local function handle_penalty_always(post, pre, g)
692 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
693 local a = (pre or 0) + (post or 0)
695 if not (g and getid(g)==id_glue) or a~=0 then
696 local p = node_new(id_penalty)
697 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
698 setfield(p, 'penalty', a); head = insert_before(head, Np.first, p)
699 Bp[1]=p; set_attr(p, attr_icflag, KINSOKU)
701 else for _, v in pairs(Bp) do add_penalty(v,a) end
705 local function handle_penalty_suppress(post, pre, g)
706 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
708 if g and getid(g)==id_glue then
709 local p = node_new(id_penalty)
710 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
711 Bp[1]=p; set_attr(p, attr_icflag, KINSOKU)
714 local a = (pre or 0) + (post or 0)
715 for _, v in pairs(Bp) do add_penalty(v,a) end
719 local function handle_penalty_jwp()
720 local a = table_current_stack[luatexja.stack_table_index.JWP]
721 if #widow_Bp == 0 then
723 local p = node_new(id_penalty)
724 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
725 setfield(p, 'penalty', a); head = insert_before(head, widow_Np.first, p)
726 widow_Bp[1]=p; set_attr(p, attr_icflag, KINSOKU)
728 else for _, v in pairs(widow_Bp) do add_penalty(v,a) end
732 -- 和文文字間の JFM glue を node 化
733 local function new_jfm_glue(mc, bc, ac)
734 -- bc, ac: char classes
738 return node_copy(g[1]), g.ratio, false, false, false
740 local f = node_new(id_glue)
741 set_attr(f, attr_icflag, g.priority)
742 setglue(f, g.width, g.stretch, g.shrink)
743 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
749 -- Nq.last (kern w) .... (glue/kern g) Np.first
750 local function real_insert(g)
752 head = insert_before(head, Np.first, g)
758 -------------------- 和文文字間空白量の決定
761 local round = tex.round
762 local bg_ag = 2*id_glue - id_glue
763 local bg_ak = 2*id_glue - id_kern
764 local bk_ag = 2*id_kern - id_glue
765 local bk_ak = 2*id_kern - id_kern
767 local function blend_diffmet(b, a, rb, ra)
768 return round(luatexja.jfmglue.diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
770 local blend_diffmet_inf
772 local abs, log, log264, floor = math.abs, math.log, math.log(2)*64, math.floor
773 blend_diffmet_inf = function (b, a, bo, ao, rb, ra)
774 local nb, na = (bo and b*2.0^(64*bo) or 0), (ao and a*2.0^(64*ao) or 0)
775 local r = luatexja.jfmglue.diffmet_rule((1-rb)*nb+rb*na, (1-ra)*nb+ra*na)
776 local ro = (r~=0) and floor(log(abs(r))/log264+0.0625) or 0
777 return round(r/2.^(64*ro)), ro
780 local getglue = luatexja.getglue
781 calc_ja_ja_aux = function (gb, ga, db, da)
782 if luatexja.jfmglue.diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
783 and luatexja.jfmglue.diffmet_rule ~= math.two_paverage then
787 if ga then gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
790 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
792 local gbw, gaw, gbst, gast, gbsto, gasto, gbsh, gash, gbsho, gasho
793 if getid(gb)==id_glue then
794 gbw, gbst, gbsh, gbsto, gbsho = getglue(gb)
796 gbw = getfield(gb, 'kern')
798 if getid(ga)==id_glue then
799 gaw, gast, gash, gasto, gasho = getglue(ga)
801 gaw = getfield(ga, 'kern')
803 if not (gbst or gast) then -- 両方とも kern
804 setfield(gb, 'kern', blend_diffmet(gbw, gaw, db, da))
805 node_free(ga); return gb
808 if not gbst then gr = ga; node_free(gb) else node_free(ga) end
809 gbw = blend_diffmet(gbw or 0, gaw or 0, db, da) -- 結果の自然長
810 gbst, gbsto = blend_diffmet_inf(gbst, gast, gbsto, gasto, db, da) -- 伸び
811 gbsh, gbsho = blend_diffmet_inf(-(gbsh or 0), -(gash or 0), gbsho, gasho, db, da) -- -(縮み)
812 setglue(gr, gbw, gbst, -gbsh, gbsto, gbsho)
818 local null_skip_table = {0, 0, 0}
820 local get_kanjiskip, kanjiskip_jfm_flag
821 local get_kanjiskip_low
822 local calc_ja_ja_glue
824 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
825 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
827 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
828 -- flag = false: kanjiskip そのもの(パラメータ or JFM)
829 -- ノード kanji_skip のコピーで良い場合は nil が帰る
830 -- flag = true: JFM グルーに付随する kanjiskip 自然長/伸び/縮み分
831 if qm.with_kanjiskip and (bn or bp or bh) then
832 if kanjiskip_jfm_flag then
833 local g = node_new(id_glue);
834 local bk = qm.kanjiskip or null_skip_table
835 setglue(g, bn and (bn*bk[1]) or 0,
836 bp and (bp*bk[2]) or 0,
837 bh and (bh*bk[3]) or 0, 0, 0)
838 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
841 local g = node_new(id_glue)
842 local st = bp and (bp*getfield(kanji_skip, 'stretch')) or 0
843 local sh = bh and (bh*getfield(kanji_skip, 'shrink')) or 0
845 bn and (bn*getfield(kanji_skip, 'width')) or 0,
847 (st==0) and 0 or getfield(kanji_skip, 'stretch_order'),
848 (sh==0) and 0 or getfield(kanji_skip, 'shrink_order'))
849 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
855 get_kanjiskip = function()
856 if Np.auto_kspc==0 or Nq.auto_kspc==0 then return nil
857 elseif Np.auto_kspc or Nq.auto_kspc then
858 local pm, qm = Np.met, Nq.met
859 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
860 return get_kanjiskip_low(false, qm, 1, 1, 1) or node_copy(kanji_skip)
862 local gb = get_kanjiskip_low(false, qm, 1, 1, 1)
864 return calc_ja_ja_aux(gb,
865 get_kanjiskip_low(false, pm, 1, 1, 1) or node_copy(kanji_skip), 0, 1)
867 local ga = get_kanjiskip_low(false, pm, 1, 1, 1)
868 return (ga and calc_ja_ja_aux(node_copy(kanji_skip), ga, 0, 1))
869 or node_copy(kanji_skip)
873 local g = node_new(id_glue)
874 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
879 calc_ja_ja_glue = function ()
880 local qm, pm = Nq.met, Np.met
881 local qmc, pmc = qm.char_type, pm.char_type
882 if (qmc==pmc) and (qm.var==pm.var) then
883 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
884 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(true, qm, kn, kp, kh)
886 local npn, nqn = Np.nuc, Nq.nuc
887 local gb, db, bn, bp, bh
888 = new_jfm_glue(qmc, Nq.class,
889 slow_find_char_class(Np.char,
891 local ga, da, an, ap, ah
893 slow_find_char_class(Nq.char,
896 local g = calc_ja_ja_aux(gb, ga, db, da)
898 gb = get_kanjiskip_low(true, qm, bn, bp, bh)
899 ga = get_kanjiskip_low(true, pm, an, ap, ah)
900 k = calc_ja_ja_aux(gb, ga, db, da)
906 -------------------- 和欧文間空白量の決定
909 local get_xkanjiskip, xkanjiskip_jfm_flag
910 local get_xkanjiskip_normal, get_xkanjiskip_jfm
911 local get_xkanjiskip_low
913 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
914 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
916 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
917 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
918 if xkanjiskip_jfm_flag then
919 local g = node_new(id_glue);
920 local bk = qm.xkanjiskip or null_skip_table
921 setglue(g, bn and bk[1] or 0,
923 bh and bk[3] or 0, 0, 0)
924 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
927 return node_copy(xkanji_skip)
929 local g = node_new(id_glue);
931 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
932 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
933 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
934 bp and getfield(xkanji_skip, 'stretch_order') or 0,
935 bh and getfield(xkanji_skip, 'shrink_order') or 0)
936 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
942 get_xkanjiskip = function(Nn)
943 if Np.auto_xspc==0 or Nq.auto_xspc==0 then
945 elseif (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
946 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
948 local g = node_new(id_glue)
949 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
955 -------------------- 隣接した「塊」間の処理
957 local function combine_spc(name)
958 return (Np[name] or Nq[name]) and ((Np[name]~=0) and (Nq[name]~=0))
961 -- NA, NB: alchar or math
962 local function get_NA_skip()
964 local g, _, kn, kp, kh = new_jfm_glue(
966 fast_find_char_class(
967 (Nq.id == id_math and -1 or (Nq.xspc>=2 and 'alchar' or 'nox_alchar')), pm),
969 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc 'auto_xspc')
970 and get_xkanjiskip_low(false, pm, kn, kp, kh)
973 local function get_NB_skip()
975 local g, _, kn, kp, kh = new_jfm_glue(
976 qm.char_type, Nq.class,
977 fast_find_char_class(
978 (Np.id == id_math and -1 or (Np.xspc%2==1 and 'alchar' or 'nox_alchar')), qm)
980 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc 'auto_xspc')
981 and get_xkanjiskip_low(false, qm, kn, kp, kh)
985 local function get_OA_skip(insert_ksp)
987 local g, _, kn, kp, kh = new_jfm_glue(
989 fast_find_char_class(
990 (((Nq.id==id_glue)or(Nq.id==id_kern)) and 'glue' or 'jcharbdd'), pm),
994 k = (combine_spc 'auto_kspc') and get_kanjiskip_low(true, pm, kn, kp, kh)
998 local function get_OB_skip(insert_ksp)
1000 local g, _, kn, kp, kh = new_jfm_glue(
1001 qm.char_type, Nq.class,
1002 fast_find_char_class(
1003 (((Np.id==id_glue)or(Np.id==id_kern)) and 'glue' or 'jcharbdd'), qm))
1006 k = (combine_spc 'auto_kspc') and get_kanjiskip_low(true, qm, kn, kp, kh)
1011 -- (anything) .. jachar
1012 local function handle_np_jachar(mode)
1014 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
1016 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
1017 if not g then g = get_kanjiskip() end
1018 handle_penalty_normal(Nq.post, Np.pre, g);
1019 real_insert(g); real_insert(k)
1020 elseif Nq.met then -- qid==id_hlist
1022 if non_ihb_flag then g, k = get_OA_skip(true) end -- O_A->K
1023 if not g then g = get_kanjiskip() end
1024 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
1027 if non_ihb_flag then g, k = get_NA_skip() end -- N_A->X
1028 if not g then g = get_xkanjiskip(Np) end
1029 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
1030 real_insert(g); real_insert(k)
1032 local g = non_ihb_flag and (get_OA_skip()) -- O_A
1033 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
1034 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
1035 else handle_penalty_always(0, Np.pre, g)
1039 if mode and Np.kcat%2~=1 then
1040 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
1045 -- jachar .. (anything)
1046 local function handle_nq_jachar()
1048 local g = non_ihb_flag and get_NB_skip() or get_xkanjiskip(Nq) -- N_B->X
1049 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
1051 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1052 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1053 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1054 else handle_penalty_always(Nq.post, 0, g)
1060 -- (anything) .. (和文文字で始まる hlist)
1061 local function handle_np_ja_hlist()
1063 if qid==id_jglyph or ((qid==id_pbox or qid == id_pbox_w) and Nq.met) then
1064 local g = non_ihb_flag and get_OB_skip(true) or get_kanjiskip() -- O_B->K
1065 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1066 elseif Nq.met then -- Nq.id==id_hlist
1067 local g = get_kanjiskip() -- K
1068 handle_penalty_suppress(0, 0, g); real_insert(g)
1070 local g = get_xkanjiskip(Np) -- X
1071 handle_penalty_suppress(0, 0, g); real_insert(g)
1075 -- (和文文字で終わる hlist) .. (anything)
1076 local function handle_nq_ja_hlist()
1078 local g = get_xkanjiskip(Nq) -- X
1079 handle_penalty_suppress(0, 0, g); real_insert(g)
1084 -- Nq が前側のクラスタとなることによる修正
1087 local adjust_nq_aux = {
1088 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1089 [id_hlist] = function() after_hlist(Nq) end,
1090 [id_pbox] = function() after_hlist(Nq) end,
1091 [id_disc] = function() after_hlist(Nq) end,
1092 [id_pbox_w] = function()
1093 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1098 adjust_nq = function()
1099 local x = adjust_nq_aux[Nq.id]
1105 -------------------- 開始・終了時の処理
1107 local node_prev = node.direct.getprev
1109 local function handle_list_tail(mode, last)
1112 -- the current list is to be line-breaked.
1113 -- Insert \jcharwidowpenalty
1114 if widow_Np.first then handle_penalty_jwp() end
1117 -- the current list is the contents of a hbox
1118 local npi, pm = Np.id, Np.met
1119 if npi == id_jglyph or (npi==id_pbox and pm) then
1120 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1122 set_attr(g, attr_icflag, BOXBDD)
1123 head = insert_after(head, Np.last, g)
1130 local function handle_list_head(par_indented)
1131 local npi, pm = Np.id, Np.met
1132 if npi == id_jglyph or (npi==id_pbox and pm) then
1133 if non_ihb_flag then
1134 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1136 set_attr(g, attr_icflag, BOXBDD)
1137 if getid(g)==id_glue and #Bp==0 then
1138 local h = node_new(id_penalty)
1139 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1141 head = insert_before(head, Np.first, g)
1148 -- return value: (the initial cursor lp), (last node)
1151 local id_local = node.id 'local_par'
1152 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1153 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1154 local KSK = luatexja.stack_table_index.KSK
1155 local XSK = luatexja.stack_table_index.XSK
1156 local dir_yoko = luatexja.dir_table.dir_yoko
1157 local dir_tate = luatexja.dir_table.dir_tate
1158 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1159 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1160 local table_pool = {
1161 {}, {}, {first=nil},
1162 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1163 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1164 post=nil, pre=nil, xspc=nil, },
1165 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1166 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1167 post=nil, pre=nil, xspc=nil, },
1169 init_var = function (mode,dir)
1170 -- 1073741823: max_dimen
1171 Bp, widow_Bp, widow_Np, Np, Nq
1172 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1173 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1174 table_current_stack = ltjs.table_current_stack
1176 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1177 local is_dir_tate = list_dir==dir_tate
1178 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1179 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1180 local TEMP = node_new(id_glue)
1181 -- TEMP is a dummy node, which will be freed at the end of the callback.
1182 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1185 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1186 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1190 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1191 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1195 -- the current list is to be line-breaked:
1196 -- hbox from \parindent is skipped.
1197 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1199 ((lpi==id_whatsit and lps~=sid_user)
1200 or ((lpi==id_hlist) and (lps==3))
1201 or (lpi==id_local)) do
1202 if (lpi==id_hlist) and (lps==3) then
1203 Np.char, par_indented = 'parbdd', 'parbdd'
1204 Np.width = getfield(lp, 'width')
1206 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1207 return lp, node_tail(head), par_indented, TEMP
1209 return head, nil, 'boxbdd', TEMP
1214 local ensure_tex_attr = ltjb.ensure_tex_attr
1215 local function cleanup(mode, TEMP)
1216 -- luatexja.ext_show_node_list(to_node(head), '> ', print)
1217 -- adjust attr_icflag for avoiding error
1218 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1219 node_free(kanji_skip);
1220 node_free(xkanji_skip); node_free(TEMP)
1223 local h = node_next(head)
1224 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1226 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1233 -------------------- 外部から呼ばれる関数
1236 function luatexja.jfmglue.main(ahead, mode, dir)
1237 if not ahead then return ahead end
1238 --luatexja.ext_show_node_list(to_node(ahead ), '>B ', print)
1241 local lp, last, par_indented, TEMP = init_var(mode,dir)
1242 lp = calc_np(last, lp)
1244 handle_list_head(par_indented)
1245 lp = calc_np(last,lp);
1248 local pid, pm = Np.id, Np.met
1250 if pid == id_jglyph then
1251 handle_np_jachar(mode)
1253 if pid==id_hlist then handle_np_ja_hlist()
1254 else handle_np_jachar() end
1256 if Nq.id==id_hlist then handle_nq_ja_hlist()
1257 else handle_nq_jachar() end
1259 lp = calc_np(last,lp)
1261 handle_list_tail(mode, last)
1263 --luatexja.ext_show_node_list(to_node(ahead ), '>A ', print)
1265 return cleanup(mode, TEMP)
1270 local IHB = luatexja.userid_table.IHB
1271 local BPAR = luatexja.userid_table.BPAR
1272 local BOXB = luatexja.userid_table.BOXB
1273 local node_prev = node.direct.getprev
1274 local node_write = node.direct.write
1277 function luatexja.jfmglue.create_inhibitglue_node()
1278 local tn = node_new(id_whatsit, sid_user)
1279 setfield(tn, 'user_id', IHB)
1280 setfield(tn, 'type', 100)
1281 setfield(tn, 'value', 1)
1285 -- Node for indicating beginning of a paragraph
1286 -- (for ltjsclasses)
1287 function luatexja.jfmglue.create_beginpar_node()
1288 local tn = node_new(id_whatsit, sid_user)
1289 setfield(tn, 'user_id', BPAR)
1290 setfield(tn, 'type', 100)
1291 setfield(tn, 'value', 1)
1295 -- Node for indicating a head/end of a box
1296 function luatexja.jfmglue.create_boxbdd_node()
1297 local tn = node_new(id_whatsit, sid_user)
1298 setfield(tn, 'user_id', BOXB)
1299 setfield(tn, 'type', 100)
1300 setfield(tn, 'value', 1)
1304 local function whatsit_callback(Np, lp, Nq)
1305 if Np and Np.nuc then return Np
1306 elseif Np and getfield(lp, 'user_id') == BPAR then
1307 Np.first = lp; Np.nuc = lp; Np.last = lp
1309 elseif Np and getfield(lp, 'user_id') == BOXB then
1310 Np.first = lp; Np.nuc = lp; Np.last = lp
1313 Np.class = fast_find_char_class('boxbdd', Nq.met)
1315 Np.met = Nq.met; Np.pre = 0; Np.post = 0; Np.xspc = 0
1316 Np.auto_xspc, Np.auto_kspc = 0, 0
1324 local function whatsit_after_callback(s, Nq, Np)
1325 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1326 local x, y = node_prev(Nq.nuc), Nq.nuc
1327 Nq.first, Nq.nuc, Nq.last = x, x, x
1330 Nq.class = fast_find_char_class('parbdd', Np.met)
1332 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1333 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1335 head = node_remove(head, y)
1337 elseif not s and getfield(Nq.nuc, 'user_id') == BOXB then
1338 local x, y = node_prev(Nq.nuc), Nq.nuc
1339 Nq.first, Nq.nuc, Nq.last = x, x, x
1342 Nq.class = fast_find_char_class('boxbdd', Np.met)
1344 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1345 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1347 head = node_remove(head, y)
1353 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1354 "luatexja.beginpar.np_info", 1)
1355 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1356 "luatexja.beginpar.np_info_after", 1)
1360 luatexja.jfmglue.after_hlist = after_hlist
1361 luatexja.jfmglue.check_box_high = check_box_high