2 -- luatexja/ltj-jfmglue.lua
4 luatexbase.provides_module({
5 name = 'luatexja.jfmglue',
7 description = 'Insertion process of JFM glues and kanjiskip',
9 module('luatexja.jfmglue', package.seeall)
10 local err, warn, info, log = luatexbase .errwarinf(_NAME)
12 luatexja.load_module('base'); local ltjb = luatexja.base
13 luatexja.load_module('stack'); local ltjs = luatexja.stack
14 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
15 luatexja.load_module('direction'); local ltjd = luatexja.direction
16 luatexja.load_module('setwidth'); local ltjw = luatexja.setwidth
19 local nullfunc = function(n) return n end
20 local to_node = node.direct.tonode
21 local to_direct = node.direct.todirect
23 local setfield = node.direct.setfield
24 local setglue = luatexja.setglue
25 local getfield = node.direct.getfield
26 local getid = node.direct.getid
27 local getfont = node.direct.getfont
28 local getlist = node.direct.getlist
29 local getchar = node.direct.getchar
30 local getsubtype = node.direct.getsubtype
32 local has_attr = node.direct.has_attribute
33 local set_attr = node.direct.set_attribute
34 local insert_before = node.direct.insert_before
35 local insert_after = node.direct.insert_after
36 local node_next = node.direct.getnext
37 local round = tex.round
38 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
39 local ltjf_font_metric_table = ltjf.font_metric_table
40 local ltjf_find_char_class = ltjf.find_char_class
41 local node_new = node.direct.new
42 local node_copy = node.direct.copy
43 local node_remove = node.direct.remove
44 local node_tail = node.direct.tail
45 local node_free = node.direct.free
46 local node_end_of_math = node.direct.end_of_math
48 local id_glyph = node.id('glyph')
49 local id_hlist = node.id('hlist')
50 local id_vlist = node.id('vlist')
51 local id_rule = node.id('rule')
52 local id_ins = node.id('ins')
53 local id_mark = node.id('mark')
54 local id_adjust = node.id('adjust')
55 local id_disc = node.id('disc')
56 local id_whatsit = node.id('whatsit')
57 local id_math = node.id('math')
58 local id_glue = node.id('glue')
59 local id_kern = node.id('kern')
60 local id_penalty = node.id('penalty')
62 local id_jglyph = 512 -- Japanese character
63 local id_box_like = 256 -- vbox, shifted hbox
64 local id_pbox = 257 -- already processed nodes (by \unhbox)
65 local id_pbox_w = 258 -- cluster which consists of a whatsit
66 local sid_user = node.subtype('user_defined')
67 local lang_ja = luatexja.lang_ja
69 local sid_start_link = node.subtype('pdf_start_link')
70 local sid_start_thread = node.subtype('pdf_start_thread')
71 local sid_end_link = node.subtype('pdf_end_link')
72 local sid_end_thread = node.subtype('pdf_end_thread')
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
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)
130 local function add_penalty(p,e)
131 local pp = getfield(p, 'penalty')
133 if e<=-10000 then setfield(p, 'penalty', 0) end
134 elseif pp<=-10000 then
135 if e>=10000 then setfield(p, 'penalty', 0) end
138 if pp>=10000 then setfield(p, 'penalty', 10000)
139 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
140 else setfield(p, 'penalty', pp) end
145 diffmet_rule = math.two_paverage
146 function math.two_add(a,b) return a+b end
147 function math.two_average(a,b) return (a+b)*0.5 end
148 function math.two_paverage(a,b) return (a+b)/2 end
149 function math.two_pleft(a,b) return a end
150 function math.two_pright(a,b) return b end
152 local head -- the head of current list
155 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
157 local non_ihb_flag -- JFM グルー挿入抑止用 flag
158 -- false: \inhibitglue 指定時 true: それ以外
160 -------------------- hlist 内の文字の検索
162 local first_char, last_char, find_first_char
164 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
165 local function check_box(box_ptr, box_end)
166 local p = box_ptr; local found_visible_node = false
168 find_first_char = false; last_char = nil
171 while p and p~=box_end do
173 if pid==id_kern and getsubtype(p)==2 then
174 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
176 if pid==id_glyph then
178 if find_first_char then
179 first_char = p; find_first_char = false
181 last_char = p; found_visible_node = true; p=node_next(p)
182 if (not p) or p==box_end then
183 return found_visible_node
185 until getid(p)~=id_glyph
186 pid = getid(p) -- p must be non-nil
189 local pa = get_attr_icflag(p)
190 if pa==IC_PROCESSED then
192 elseif getsubtype(p)==2 then
193 p = node_next(node_next(p));
194 -- Note that another node_next will be executed outside this if-statement.
196 found_visible_node = true
197 find_first_char = false; last_char = nil
199 elseif pid==id_hlist then
200 if PACKED == get_attr_icflag(p) then
201 local s = ltjd_glyph_from_packed(p)
202 if find_first_char then
203 first_char = s; find_first_char = false
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
211 find_first_char = false; last_char = nil
214 elseif pid==id_math then
215 if find_first_char then
216 first_char = p; find_first_char = false
218 last_char = p; found_visible_node = true
219 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
221 elseif not (pid==id_ins or pid==id_mark
222 or pid==id_adjust or pid==id_whatsit
223 or pid==id_penalty) then
224 found_visible_node = true
225 find_first_char = false; last_char = nil
229 return found_visible_node
232 function check_box_high(Nx, box_ptr, box_end)
233 first_char = nil; last_char = nil; find_first_char = true
234 if check_box(box_ptr, box_end) then
235 local first_char = first_char
237 if getid(first_char)==id_glyph then
238 if getfield(first_char, 'lang') == lang_ja then
239 set_np_xspc_jachar_hbox(Nx, first_char)
241 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
244 set_np_xspc_alchar(Nx, -1,first_char)
251 -------------------- Np の計算と情報取得
253 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
254 function (Np, lp, Nq)
255 if Np.nuc then return Np
257 return Np -- your code
260 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
261 function (stat, Nq, Np) return false end)
267 local traverse = node.direct.traverse
268 local function check_next_ickern(lp)
269 if lp and getid(lp) == id_kern and ( getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) then
270 set_attr(lp, attr_icflag, IC_PROCESSED);
271 Np.last = lp; return node_next(lp)
273 Np.last = Np.nuc; return lp
277 local function calc_np_pbox(lp, last)
278 local first, lpa, nc = (not Np.first), KINSOKU, nil
279 Np.first = Np.first or lp; Np.id = id_pbox
280 set_attr(lp, attr_icflag, get_attr_icflag(lp));
281 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
282 local lpi = getid(lp)
283 if lpi==id_hlist or lpi==id_vlist then
284 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
285 Np.first = first and nc or Np.first
286 elseif (lpi==id_rule) and (lpa==PACKED) then
288 nc, lp = lp, node_next(lp)
290 nc, lp = lp, node_next(lp)
292 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
293 -- get_attr_icflag() ではいけない!
296 lp = check_next_ickern(lp)
297 Np.last_char = check_box_high(Np, Np.first, lp)
301 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
302 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
303 local min, max = math.min, math.max
304 local function calc_np_aux_glyph_common(lp, acc_flag)
306 Np.first= (Np.first or lp)
307 if getfield(lp, 'lang') == lang_ja then
309 local m, mc, cls = set_np_xspc_jachar(Np, lp)
311 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
312 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
314 return true, check_next_ickern(lp);
317 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
319 local first_glyph, last_glyph = lp
320 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
321 local y_adjust = has_attr(lp,attr_ablshift) or 0
322 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
323 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
324 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
326 for lx in traverse(lp) do
327 local lai = get_attr_icflag(lx)
328 if lx==last or lai>=PACKED then
331 local lid = getid(lx)
332 if lid==id_glyph and getfield(lx, 'lang') ~= lang_ja then
334 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
335 y_adjust = has_attr(lx,attr_ablshift) or 0
336 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
337 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
338 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
339 elseif lid==id_kern then
340 local ls = getsubtype(lx)
341 if ls==2 then -- アクセント用の kern
342 set_attr(lx, attr_icflag, PROCESSED)
343 lx = node_next(lx) -- lx: アクセント本体
344 if getid(lx)==id_glyph then
345 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
346 else -- アクセントは上下にシフトされている
347 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
349 lx = node_next(node_next(lx))
352 elseif (ls==3) or (lai==ITALIC) then
353 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
363 if adj_depth>node_depth then
364 r = node_new(id_rule,3)
365 setfield(r, 'width', 0); setfield(r, 'height', 0)
366 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
367 set_attr(r, attr_icflag, PROCESSED)
370 Np.last_char = last_glyph
371 if r then insert_after(head, first_glyph, r) end
376 local nf, nc = getfont(npn), getchar(npn)
377 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
378 if not ct then -- variation selector
380 elseif (ct.left_protruding or 0) == 0 then
381 head = insert_before(head, npn, r)
382 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
383 elseif (ct.right_protruding or 0) == 0 then
384 insert_after(head, npn, r); Np.last, lp = r, r
386 ltjb.package_warning_no_line(
388 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
389 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
390 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
398 local calc_np_auxtable
400 local dir_tate = luatexja.dir_table.dir_tate
402 [id_glyph] = calc_np_aux_glyph_common,
403 [id_hlist] = function(lp)
405 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
406 set_attr(op, attr_icflag, PROCESSED)
407 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
408 if (flag or getfield(op, 'shift')~=0) then
412 Np.last_char = check_box_high(Np, getlist(op), nil)
416 [id_vlist] = function(lp)
418 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
419 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
423 box_like = function(lp)
424 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
426 return true, node_next(lp)
428 [id_whatsit] = function(lp)
429 local lps = getsubtype(lp)
430 if lps==sid_user then
431 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
432 local lq = node_next(lp);
433 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
436 set_attr(lp, attr_icflag, PROCESSED)
437 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
440 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
441 return true, node_next(lp)
443 return false, node_next(lp)
447 -- we do special treatment for these whatsit nodes.
448 if lps == sid_start_link or lps == sid_start_thread then
450 elseif lps == sid_end_link or lps == sid_end_thread then
451 Np.first, Nq.last = nil, lp;
453 set_attr(lp, attr_icflag, PROCESSED)
454 return false, node_next(lp)
457 [id_math] = function(lp)
458 Np.first, Np.nuc = (Np.first or lp), lp;
459 set_attr(lp, attr_icflag, PROCESSED)
460 set_np_xspc_alchar(Np, -1, lp)
461 local end_math = node_end_of_math(lp)
462 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
463 set_attr(end_math, attr_icflag, PROCESSED)
464 Np.last, Np.id = end_math, id_math;
465 return true, node_next(end_math);
467 [id_glue] = function(lp)
468 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
469 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
470 return true, node_next(lp)
472 [id_disc] = function(lp)
473 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
474 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
475 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
476 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
477 return true, node_next(lp)
479 [id_kern] = function(lp)
480 if getsubtype(lp)==2 then
481 Np.first = Np.first or lp
482 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
483 if getid(lp)==id_glyph then -- アクセント本体
484 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
485 else -- アクセントは上下にシフトされている
486 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
488 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
489 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
490 set_attr(lp, attr_icflag, PROCESSED);
491 return calc_np_aux_glyph_common(lp, true)
493 Np.first = Np.first or lp
494 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
495 Np.last = lp; return true, node_next(lp)
498 [id_penalty] = function(lp)
499 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
500 return false, node_next(lp)
504 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
505 calc_np_auxtable[15] = calc_np_auxtable.box_like
507 local function calc_np_aux_skip (lp)
508 set_attr(lp, attr_icflag, PROCESSED)
509 return false, node_next(lp)
512 function calc_np(last, lp)
514 -- We assume lp = node_next(Np.last)
515 Np, Nq, non_ihb_flag = Nq, Np, true
516 -- We clear `predefined' entries of Np before pairs() loop,
517 -- because using only pairs() loop is slower.
518 Np.post, Np.pre, Np.xspc = nil, nil, nil
519 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
520 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
521 for k in pairs(Np) do Np[k] = nil end
523 for k = 1,#Bp do Bp[k] = nil end
525 local lpa = has_attr(lp, attr_icflag) or 0
528 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
529 local lq = node_next(lp)
530 head = node_remove(head, lp); node_free(lp); lp = lq
532 return calc_np_pbox(lp, last)
535 k, lp = (calc_np_auxtable[getid(lp)] or calc_np_aux_skip)(lp)
536 if k then return lp end
543 -- extract informations from Np
544 -- We think that "Np is a Japanese character" if Np.met~=nil,
545 -- "Np is an alphabetic character" if Np.pre~=nil,
546 -- "Np is not a character" otherwise.
547 after_hlist = nil -- global
548 local after_alchar, extract_np
550 local PRE = luatexja.stack_table_index.PRE
551 local POST = luatexja.stack_table_index.POST
552 local KCAT = luatexja.stack_table_index.KCAT
553 local XSP = luatexja.stack_table_index.XSP
554 local dir_tate = luatexja.dir_table.dir_tate
557 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
558 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
559 local attr_autospc = luatexbase.attributes['ltj@autospc']
560 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
561 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
562 function set_np_xspc_jachar(Nx, x)
563 local m = ltjf_font_metric_table[getfont(x)]
564 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
566 local cls = slow_find_char_class(c, m, c_glyph)
567 Nx.met, Nx.class, Nx.char = m, cls, c;
568 local mc = m.char_type; Nx.char_type = mc
569 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
570 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
571 Nx.pre = table_current_stack[PRE + c] or 0
572 Nx.post = table_current_stack[POST + c] or 0
573 Nx.xspc = table_current_stack[XSP + c] or 3
574 Nx.kcat = table_current_stack[KCAT + c] or 0
575 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
578 function set_np_xspc_jachar_hbox(Nx, x)
579 local m = ltjf_font_metric_table[getfont(x)]
580 local c = has_attr(x, attr_jchar_code) or getchar(x)
581 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
582 local mc = m.char_type; Nx.char_type = mc
583 Nx.pre = table_current_stack[PRE + c] or 0
584 Nx.post = table_current_stack[POST + c] or 0
585 Nx.xspc = table_current_stack[XSP + c] or 3
586 Nx.kcat = table_current_stack[KCAT + c] or 0
587 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
591 local floor = math.floor
592 function set_np_xspc_alchar(Nx, c,x, lig)
594 local f = (lig ==1) and nullfunc or node_tail
595 local xc, xs = getfield(x, 'components'), getsubtype(x)
596 while xc and xs and xs%4>=2 do
597 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
600 Nx.pre = table_current_stack[PRE + c] or 0
601 Nx.post = table_current_stack[POST + c] or 0
602 Nx.xspc = table_current_stack[XSP + c] or 3
604 Nx.pre, Nx.post = 0, 0
605 Nx.xspc = table_current_stack[XSP - 1] or 3
608 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
610 local set_np_xspc_alchar = set_np_xspc_alchar
612 -- change the information for the next loop
613 -- (will be done if Nx is an alphabetic character or a hlist)
614 after_hlist = function (Nx)
615 local s = Nx.last_char
617 if getid(s)==id_glyph then
618 if getfield(s, 'lang') == lang_ja then
619 set_np_xspc_jachar_hbox(Nx, s)
621 set_np_xspc_alchar(Nx, getchar(s), s, 2)
624 set_np_xspc_alchar(Nx, -1, s)
627 Nx.pre, Nx.met = nil, nil
631 after_alchar = function (Nx)
632 local x = Nx.last_char
633 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
638 -------------------- 最下層の処理
640 -- change penalties (or create a new penalty, if needed)
641 local function handle_penalty_normal(post, pre, g)
642 local a = (pre or 0) + (post or 0)
644 if (a~=0 and not(g and getid(g)==id_kern)) then
645 local p = node_new(id_penalty)
646 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
647 setfield(p, 'penalty', a)
648 head = insert_before(head, Np.first, p)
650 set_attr(p, attr_icflag, KINSOKU)
652 else for _, v in pairs(Bp) do add_penalty(v,a) end
656 local function handle_penalty_always(post, pre, g)
657 local a = (pre or 0) + (post or 0)
659 if not (g and getid(g)==id_glue) or a~=0 then
660 local p = node_new(id_penalty)
661 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
662 setfield(p, 'penalty', a)
663 head = insert_before(head, Np.first, p)
665 set_attr(p, attr_icflag, KINSOKU)
667 else for _, v in pairs(Bp) do add_penalty(v,a) end
671 local function handle_penalty_suppress(post, pre, g)
672 local a = (pre or 0) + (post or 0)
674 if g and getid(g)==id_glue then
675 local p = node_new(id_penalty)
676 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
678 set_attr(p, attr_icflag, KINSOKU)
680 else for _, v in pairs(Bp) do add_penalty(v,a) end
684 -- 和文文字間の JFM glue を node 化
685 local function new_jfm_glue(mc, bc, ac)
686 -- bc, ac: char classes
690 return node_copy(g[1]), g.ratio, false, false, false
692 local f = node_new(id_glue)
693 set_attr(f, attr_icflag, g.priority)
694 setglue(f, g.width, g.stretch, g.shrink)
695 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
701 -- Nq.last (kern w) .... (glue/kern g) Np.first
702 local function real_insert(g)
704 head = insert_before(head, Np.first, g)
710 -------------------- 和文文字間空白量の決定
713 local bg_ag = 2*id_glue - id_glue
714 local bg_ak = 2*id_glue - id_kern
715 local bk_ag = 2*id_kern - id_glue
716 local bk_ak = 2*id_kern - id_kern
718 local function blend_diffmet(b, a, rb, ra)
719 return round(diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
721 calc_ja_ja_aux = function (gb, ga, db, da)
722 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
723 and diffmet_rule ~= math.two_paverage then
728 gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
731 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
734 local k = 2*getid(gb) - getid(ga)
737 setglue(gb, blend_diffmet(
738 getfield(gb, 'width'), getfield(ga, 'width'), db, da),
740 getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
742 -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
745 elseif k == bk_ak then
747 setfield(gb, 'kern', blend_diffmet(
748 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
751 elseif k == bk_ag then
752 -- gb: kern, ga: glue
753 setglue(ga, blend_diffmet(
754 getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
756 0, getfield(ga, 'stretch'), db, da),
758 0, -getfield(ga, 'shrink'), db, da))
762 -- gb: glue, ga: kern
763 setglue(gb, blend_diffmet(
764 getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
766 getfield(gb, 'stretch'), 0, db, da),
768 -getfield(gb, 'shrink'), 0, db, da))
775 local null_skip_table = {0, 0, 0}
777 local get_kanjiskip, kanjiskip_jfm_flag
778 local calc_ja_ja_glue
780 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
781 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
783 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
784 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
785 if kanjiskip_jfm_flag then
786 local g = node_new(id_glue);
787 local bk = qm.kanjiskip or null_skip_table
788 setglue(g, bn and (bn*bk[1]) or 0,
789 bp and (bp*bk[2]) or 0,
790 bh and (bh*bk[3]) or 0, 0, 0)
791 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
794 return node_copy(kanji_skip)
796 local g = node_new(id_glue);
798 bn and (bn*getfield(kanji_skip, 'width')) or 0,
799 bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
800 bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
802 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
808 get_kanjiskip = function()
809 if Np.auto_kspc or Nq.auto_kspc then
810 local pm, qm = Np.met, Nq.met
811 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
812 return get_kanjiskip_low(true, qm, 1, 1, 1)
814 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
815 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
816 return calc_ja_ja_aux(gb, ga, 0, 1)
819 local g = node_new(id_glue)
820 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
825 calc_ja_ja_glue = function ()
826 local qm, pm = Nq.met, Np.met
827 local qmc, pmc = qm.char_type, pm.char_type
828 if (qmc==pmc) and (qm.var==pm.var) then
829 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
830 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
832 local npn, nqn = Np.nuc, Nq.nuc
833 local gb, db, bn, bp, bh
834 = new_jfm_glue(qmc, Nq.class,
835 slow_find_char_class(Np.char,
837 local ga, da, an, ap, ah
839 slow_find_char_class(Nq.char,
842 local g = calc_ja_ja_aux(gb, ga, db, da)
844 if (pmc==qmc) and (qm.var==pm.var) then
845 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
846 ga = get_kanjiskip_low(false, pm, an, ap, ah)
847 k = calc_ja_ja_aux(gb, ga, db, da)
854 -------------------- 和欧文間空白量の決定
857 local get_xkanjiskip, xkanjiskip_jfm_flag
858 local get_xkanjiskip_normal, get_xkanjiskip_jfm
860 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
861 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
863 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
864 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
865 if xkanjiskip_jfm_flag then
866 local g = node_new(id_glue);
867 local bk = qm.xkanjiskip or null_skip_table
868 setglue(g, bn and bk[1] or 0,
870 bh and bk[3] or 0, 0, 0)
871 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
874 return node_copy(xkanji_skip)
876 local g = node_new(id_glue);
878 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
879 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
880 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
882 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
888 get_xkanjiskip = function(Nn)
889 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
890 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
892 local g = node_new(id_glue)
893 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
899 -------------------- 隣接した「塊」間の処理
901 local function get_OA_skip(is_kanji)
903 local g, _, kn, kp, kh = new_jfm_glue(
905 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm),
909 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, pm, kn, kp, kh)
910 elseif is_kanji==1 then
911 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
912 and get_xkanjiskip_low(false, pm, kn, kp, kh)
916 local function get_OB_skip(is_kanji)
918 local g, _, kn, kp, kh = new_jfm_glue(
919 qm.char_type, Nq.class,
920 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
923 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
924 elseif is_kanji==1 then
925 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
926 and get_xkanjiskip_low(false, qm, kn, kp, kh)
931 -- (anything) .. jachar
932 local function handle_np_jachar(mode)
934 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
936 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
937 if not g then g = get_kanjiskip() end
938 handle_penalty_normal(Nq.post, Np.pre, g);
939 real_insert(g); real_insert(k)
940 elseif Nq.met then -- qid==id_hlist
942 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
943 if not g then g = get_kanjiskip() end
944 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
947 if non_ihb_flag then g, k = get_OA_skip(1) end -- O_A->X
948 if not g then g = get_xkanjiskip(Np) end
949 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
950 real_insert(g); real_insert(k)
952 local g = non_ihb_flag and (get_OA_skip()) -- O_A
953 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
954 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
955 else handle_penalty_always(0, Np.pre, g)
959 if mode and Np.kcat%2~=1 then
960 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
965 -- jachar .. (anything)
966 local function handle_nq_jachar()
968 local g = non_ihb_flag and get_OB_skip(1) or get_xkanjiskip(Nq) -- O_B->X
969 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
971 local g =non_ihb_flag and (get_OB_skip()) -- O_B
972 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
973 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
974 else handle_penalty_always(Nq.post, 0, g)
980 -- (anything) .. (和文文字で始まる hlist)
981 local function handle_np_ja_hlist()
983 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
984 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
985 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
986 elseif Nq.met then -- Nq.id==id_hlist
987 local g = get_kanjiskip() -- K
988 handle_penalty_suppress(0, 0, g); real_insert(g)
990 local g = get_xkanjiskip(Np) -- X
991 handle_penalty_suppress(0, 0, g); real_insert(g)
995 -- (和文文字で終わる hlist) .. (anything)
996 local function handle_nq_ja_hlist()
998 local g = get_xkanjiskip(Nq) -- X
999 handle_penalty_suppress(0, 0, g); real_insert(g)
1004 -- Nq が前側のクラスタとなることによる修正
1006 local adjust_nq_aux = {
1007 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1008 [id_hlist] = function() after_hlist(Nq) end,
1009 [id_pbox] = function() after_hlist(Nq) end,
1010 [id_disc] = function() after_hlist(Nq) end,
1011 [id_pbox_w] = function()
1012 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1017 function adjust_nq()
1018 local x = adjust_nq_aux[Nq.id]
1024 -------------------- 開始・終了時の処理
1028 local JWP = luatexja.stack_table_index.JWP
1029 local function handle_list_tail(mode)
1030 adjust_nq(); Np = Nq
1032 -- the current list is to be line-breaked.
1033 -- Insert \jcharwidowpenalty
1034 Bp = widow_Bp; Np = widow_Np
1036 handle_penalty_normal(0, table_current_stack[JWP] or 0)
1039 -- the current list is the contents of a hbox
1040 local npi, pm = Np.id, Np.met
1041 if npi == id_jglyph or (npi==id_pbox and pm) then
1042 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1044 set_attr(g, attr_icflag, BOXBDD)
1045 head = insert_after(head, Np.last, g)
1052 local function handle_list_head(par_indented)
1053 local npi, pm = Np.id, Np.met
1054 if npi == id_jglyph or (npi==id_pbox and pm) then
1055 if non_ihb_flag then
1056 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1058 set_attr(g, attr_icflag, BOXBDD)
1059 if getid(g)==id_glue and #Bp==0 then
1060 local h = node_new(id_penalty)
1061 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1063 head = insert_before(head, Np.first, g)
1070 -- return value: (the initial cursor lp), (last node)
1073 local id_local = node.id('local_par')
1074 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1075 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1076 local KSK = luatexja.stack_table_index.KSK
1077 local XSK = luatexja.stack_table_index.XSK
1078 local dir_yoko = luatexja.dir_table.dir_yoko
1079 local dir_tate = luatexja.dir_table.dir_tate
1080 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1081 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1082 local table_pool = {
1083 {}, {}, {first=nil},
1084 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1085 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1086 post=nil, pre=nil, xspc=nil, },
1087 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1088 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1089 post=nil, pre=nil, xspc=nil, },
1091 init_var = function (mode,dir)
1092 -- 1073741823: max_dimen
1093 Bp, widow_Bp, widow_Np, Np, Nq
1094 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1095 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1096 table_current_stack = ltjs.table_current_stack
1098 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1099 local is_dir_tate = list_dir==dir_tate
1100 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1101 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1102 local TEMP = node_new(id_glue)
1103 -- TEMP is a dummy node, which will be freed at the end of the callback.
1104 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1107 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1108 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1112 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1113 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1117 -- the current list is to be line-breaked:
1118 -- hbox from \parindent is skipped.
1119 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1121 ((lpi==id_whatsit and lps~=sid_user)
1122 or ((lpi==id_hlist) and (lps==3))
1123 or (lpi==id_local)) do
1124 if (lpi==id_hlist) and (lps==3) then
1125 Np.char, par_indented = 'parbdd', 'parbdd'
1126 Np.width = getfield(lp, 'width')
1128 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1129 return lp, node_tail(head), par_indented, TEMP
1131 return head, nil, 'boxbdd', TEMP
1136 local ensure_tex_attr = ltjb.ensure_tex_attr
1137 local function cleanup(mode, TEMP)
1138 -- adjust attr_icflag for avoiding error
1139 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1140 node_free(kanji_skip);
1141 node_free(xkanji_skip); node_free(TEMP)
1144 local h = node_next(head)
1145 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1147 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1154 -------------------- 外部から呼ばれる関数
1157 function main(ahead, mode, dir)
1158 if not ahead then return ahead end
1160 local lp, last, par_indented, TEMP = init_var(mode,dir)
1161 lp = calc_np(last, lp)
1163 handle_list_head(par_indented)
1164 lp = calc_np(last,lp);
1167 local pid, pm = Np.id, Np.met
1169 if pid == id_jglyph then
1170 handle_np_jachar(mode)
1172 if pid==id_hlist then handle_np_ja_hlist()
1173 else handle_np_jachar() end
1175 if Nq.id==id_hlist then handle_nq_ja_hlist()
1176 else handle_nq_jachar() end
1178 lp = calc_np(last,lp)
1180 handle_list_tail(mode)
1182 return cleanup(mode, TEMP)
1187 local IHB = luatexja.userid_table.IHB
1188 local BPAR = luatexja.userid_table.BPAR
1189 local node_prev = node.direct.getprev
1190 local node_write = node.direct.write
1193 function create_inhibitglue_node()
1194 local tn = node_new(id_whatsit, sid_user)
1195 setfield(tn, 'user_id', IHB)
1196 setfield(tn, 'type', 100)
1197 setfield(tn, 'value', 1)
1201 -- Node for indicating beginning of a paragraph
1202 -- (for ltjsclasses)
1203 function create_beginpar_node()
1204 local tn = node_new(id_whatsit, sid_user)
1205 setfield(tn, 'user_id', BPAR)
1206 setfield(tn, 'type', 100)
1207 setfield(tn, 'value', 1)
1211 local function whatsit_callback(Np, lp, Nq)
1212 if Np and Np.nuc then return Np
1213 elseif Np and getfield(lp, 'user_id') == BPAR then
1214 Np.first = lp; Np.nuc = lp; Np.last = lp
1219 local function whatsit_after_callback(s, Nq, Np)
1220 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1221 local x, y = node_prev(Nq.nuc), Nq.nuc
1222 Nq.first, Nq.nuc, Nq.last = x, x, x
1225 Nq.class = fast_find_char_class('parbdd', Np.met)
1227 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1228 Nq.auto_xspc = false
1230 head = node_remove(head, y)
1236 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1237 "luatexja.beginpar.np_info", 1)
1238 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1239 "luatexja.beginpar.np_info_after", 1)