--
--- luatexja/jfmglue.lua
+-- luatexja/ltj-jfmglue.lua
--
luatexbase.provides_module({
name = 'luatexja.jfmglue',
- date = '2012/04/25',
- version = '0.4',
+ date = '2014/02/02',
description = 'Insertion process of JFM glues and kanjiskip',
})
module('luatexja.jfmglue', package.seeall)
-local err, warn, info, log = luatexbase.errwarinf(_NAME)
+local err, warn, info, log = luatexbase .errwarinf(_NAME)
-luatexja.load_module('base'); local ltjb = luatexja.base
luatexja.load_module('stack'); local ltjs = luatexja.stack
luatexja.load_module('jfont'); local ltjf = luatexja.jfont
-luatexja.load_module('pretreat'); local ltjp = luatexja.pretreat
-
-local node_type = node.type
-local node_new = node.new
-local node_remove = node.remove
-local node_prev = node.prev
-local node_next = node.next
-local node_copy = node.copy
-local node_tail = node.tail
-local node_free = node.free
-local has_attr = node.has_attribute
-local set_attr = node.set_attribute
-local node_insert_before = node.insert_before
-local node_insert_after = node.insert_after
+local pairs = pairs
+
+local Dnode = node.direct or node
+
+local nullfunc = function(n) return n end
+local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
+local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
+
+local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
+local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
+local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
+local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
+local getlist = (Dnode ~= node) and Dnode.getlist or function(n) return n.head end
+local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
+local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
+
+local has_attr = Dnode.has_attribute
+local set_attr = Dnode.set_attribute
+local insert_before = Dnode.insert_before
+local insert_after = Dnode.insert_after
+local node_next = (Dnode ~= node) and Dnode.getnext or node.next
local round = tex.round
-local table_insert = table.insert
-local uniq_id = 0 -- unique id
+local ltjf_font_metric_table = ltjf.font_metric_table
+local ltjf_find_char_class = ltjf.find_char_class
+local node_new = Dnode.new
+local node_copy = Dnode.copy
+local node_remove = luatexja.Dnode_remove -- Dnode.remove
+local node_tail = Dnode.tail
+local node_free = Dnode.free
+local node_end_of_math = Dnode.end_of_math
+
local id_glyph = node.id('glyph')
local id_hlist = node.id('hlist')
local id_penalty = node.id('penalty')
local id_glue_spec = node.id('glue_spec')
-local id_jglyph = node.id('glyph') + 256 -- Japanese character
-local id_box_like = node.id('hlist') + 256 -- vbox, shifted hbox
-local id_pbox = node.id('hlist') + 512 -- already processed nodes (by \unhbox)
-local id_pbox_w = node.id('hlist') + 513 -- cluster which consists of a whatsit
+local id_jglyph = 512 -- Japanese character
+local id_box_like = 256 -- vbox, shifted hbox
+local id_pbox = 257 -- already processed nodes (by \unhbox)
+local id_pbox_w = 258 -- cluster which consists of a whatsit
local sid_user = node.subtype('user_defined')
-local ITALIC = 1
-local PACKED = 2
-local KINSOKU = 3
-local FROM_JFM = 4
-local LINE_END = 5
-local KANJI_SKIP = 6
-local XKANJI_SKIP = 7
-local PROCESSED = 8
-local IC_PROCESSED = 9
-local BOXBDD = 15
-
+local sid_start_link = node.subtype('pdf_start_link')
+local sid_start_thread = node.subtype('pdf_start_thread')
+local sid_end_link = node.subtype('pdf_end_link')
+local sid_end_thread = node.subtype('pdf_end_thread')
+
+local ITALIC = luatexja.icflag_table.ITALIC
+local PACKED = luatexja.icflag_table.PACKED
+local KINSOKU = luatexja.icflag_table.KINSOKU
+local FROM_JFM = luatexja.icflag_table.FROM_JFM
+local PROCESSED = luatexja.icflag_table.PROCESSED
+local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
+local BOXBDD = luatexja.icflag_table.BOXBDD
+local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
local kanji_skip
local xkanji_skip
+local table_current_stack
-local attr_jchar_class = luatexbase.attributes['ltj@charclass']
local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
local attr_icflag = luatexbase.attributes['ltj@icflag']
-local attr_autospc = luatexbase.attributes['ltj@autospc']
-local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
-local attr_uniqid = luatexbase.attributes['ltj@uniqid']
-local max_dimen = 1073741823
-local ltjs_get_penalty_table = ltjs.get_penalty_table
-local ltjs_get_skip_table = ltjs.get_skip_table
-local ltjf_find_char_class = ltjf.find_char_class
-local ltjf_font_metric_table = ltjf.font_metric_table
-local ltjf_metrics = ltjf.metrics
-local box_stack_level
-local par_indented -- is the paragraph indented?
+local function get_attr_icflag(p)
+ return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
+end
-------------------- Helper functions
+local function copy_attr(new, old)
+ -- 仕様が決まるまで off にしておく
+end
+
-- This function is called only for acquiring `special' characters.
local function fast_find_char_class(c,m)
return m.chars[c] or 0
end
-local spec_zero_glue = node_new(id_glue_spec)
- spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
- spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
-
-local function get_zero_spec()
- return node_copy(spec_zero_glue)
+-- 文字クラスの決定
+local function slow_find_char_class(c, m, oc)
+ local xc = c or oc
+ local cls = ltjf_find_char_class(oc, m)
+ if xc ~= oc and cls==0 then cls = ltjf_find_char_class(-xc, m) end
+ return cls, xc
end
+local zero_glue = node_new(id_glue)
+spec_zero_glue = to_node(node_new(id_glue_spec))
+ -- must be public, since mentioned from other sources
+local spec_zero_glue = to_direct(spec_zero_glue)
+setfield(spec_zero_glue, 'width', 0)
+setfield(spec_zero_glue, 'stretch', 0)
+setfield(spec_zero_glue, 'shrink', 0)
+setfield(spec_zero_glue, 'stretch_order', 0)
+setfield(spec_zero_glue, 'shrink_order', 0)
+setfield(zero_glue, 'spec', spec_zero_glue)
+
local function skip_table_to_spec(n)
- local g = node_new(id_glue_spec)
- local st = ltjs_get_skip_table(n, box_stack_level)
- g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
- g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
+ local g, st = node_new(id_glue_spec), ltjs.fast_get_stack_skip(n)
+ setfield(g, 'width', st.width)
+ setfield(g, 'stretch', st.stretch)
+ setfield(g, 'shrink', st.shrink)
+ setfield(g, 'stretch_order', st.stretch_order)
+ setfield(g, 'shrink_order', st.shrink_order)
return g
end
+
-- penalty 値の計算
local function add_penalty(p,e)
- if p.penalty>=10000 then
- if e<=-10000 then p.penalty = 0 end
- elseif p.penalty<=-10000 then
- if e>=10000 then p.penalty = 0 end
+ local pp = getfield(p, 'penalty')
+ if pp>=10000 then
+ if e<=-10000 then pp = 0 end
+ elseif pp<=-10000 then
+ if e>=10000 then pp = 0 end
else
- p.penalty = p.penalty + e
- if p.penalty>=10000 then p.penalty = 10000
- elseif p.penalty<=-10000 then p.penalty = -10000 end
+ pp = pp + e
+ if pp>=10000 then setfield(p, 'penalty', 10000)
+ elseif pp<=-10000 then setfield(p, 'penalty', -10000)
+ else setfield(p, 'penalty', pp) end
end
return
end
-- 「異なる JFM」の間の調整方法
-diffmet_rule = math.two_average
+diffmet_rule = math.two_paverage
function math.two_add(a,b) return a+b end
-function math.two_average(a,b) return (a+b)/2 end
-
--------------------- idea
--- 2 node の間に glue/kern/penalty を挿入する．
--- 基本方針: char node q と char node p の間
-
--- Np: 「p を核とする塊」
--- first: 最初の node，nuc: p，last: 最後の node
--- id: 核 node の種類
--- Nq: 「q を核とする塊」
--- 実際の glue は Np.last, Nq.first の間に挿入される
--- Bp: Np.last, Nq.first の間の penalty node 達の配列
-
--- Np, Nq, Bp, widow_Bp について
--- Np, Nq は別々のテーブル．
--- 1回のループごとに Nq = Np, Np = (new table) となるのは効率が悪いので，
--- Np <-> Nq 入れ替え，その後 Np をクリアすることでテーブルを再利用．
--- 同様の関係は Bp, widow_Bp にも．
-
-
--- 核の定義：
--- node x が non-char node のときは，x のみ
--- x が char_node のときは，
--- - x が \accent の第二引数だったとき
--- [kern2 kern y kern2] x の 3 node が核に加わる
--- - x の直後に \/ 由来 kern があったとき
--- その \/ 由来の kern が核に加わる
--- p, q の走査で無視するもの：
--- ins, mark, adjust, whatsit, penalty
---
--- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
--- +: kern from LINEEND はここに入る
--- *: jfm glue はここに入る
+function math.two_average(a,b) return (a+b)*0.5 end
+function math.two_paverage(a,b) return (a+b)/2 end
+function math.two_pleft(a,b) return a end
+function math.two_pright(a,b) return b end
local head -- the head of current list
-local last -- the last node of current list
-local lp -- 外側での list 走査時のカーソル
local Np, Nq, Bp
local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
local function check_box(box_ptr, box_end)
local p = box_ptr; local found_visible_node = false
if not p then
- find_first_char = false; first_char = nil; last_char = nil
+ find_first_char = false; last_char = nil
return true
end
while p and p~=box_end do
- local pid = p.id
- if pid==id_kern then
- if p.subtype==2 then
- p = node_next(node_next(node_next(p))); pid = p.id
- elseif has_attr(p, attr_icflag)==IC_PROCESSED then
- p = node_next(p); pid = p.id
- end
- end
+ local pid = getid(p)
+ if pid==id_kern and getsubtype(p)==2 then
+ p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
+ end
if pid==id_glyph then
repeat
if find_first_char then
first_char = p; find_first_char = false
end
last_char = p; found_visible_node = true; p=node_next(p)
- if (not p) or p==box_end then return found_visible_node end
- until p.id~=id_glyph
- pid = p.id
+ if (not p) or p==box_end then
+ return found_visible_node
+ end
+ until getid(p)~=id_glyph
+ pid = getid(p) -- p must be non-nil
end
- if pid==id_hlist then
- if has_attr(p, attr_icflag)==PACKED then
- for q in node.traverse_id(id_glyph, p.head) do
- if find_first_char then
- first_char = q; find_first_char = false
- end
- last_char = q; found_visible_node = true; break
+ if pid==id_kern then
+ local pa = get_attr_icflag(p)
+ --if pa==IC_PROCESSED or pa == PACKED then
+ if pa==IC_PROCESSED then
+ -- do nothing
+ elseif getsubtype(p)==2 then
+ p = node_next(node_next(p));
+ -- Note that another node_next will be executed outside this if-statement.
+ else
+ found_visible_node = true
+ find_first_char = false; last_char = nil
+ end
+ elseif pid==id_hlist then
+ if PACKED == get_attr_icflag(p) then
+ if find_first_char then
+ first_char = getlist(p); find_first_char = false
end
+ last_char = getlist(p); found_visible_node = true
else
- if p.shift==0 then
- if check_box(p.head, nil) then found_visible_node = true end
- else if find_first_char then
- find_first_char = false
- else
- last_char = nil
- end
+ if getfield(p, 'shift')==0 then
+ if check_box(getlist(p), nil) then found_visible_node = true end
+ else
+ find_first_char = false; last_char = nil
end
end
+ elseif pid==id_math then
+ if find_first_char then
+ first_char = p; find_first_char = false
+ end
+ last_char = p; found_visible_node = true
+ --elseif pid==id_rule and get_attr_icflag(p)==PACKED then -- do nothing
elseif not (pid==id_ins or pid==id_mark
or pid==id_adjust or pid==id_whatsit
or pid==id_penalty) then
found_visible_node = true
- if find_first_char then
- find_first_char = false
- else
- last_char = nil
- end
+ find_first_char = false; last_char = nil
end
p = node_next(p)
end
function check_box_high(Nx, box_ptr, box_end)
first_char = nil; last_char = nil; find_first_char = true
if check_box(box_ptr, box_end) then
+ local first_char = first_char
if first_char then
- if first_char.font == has_attr(first_char, attr_curjfnt) then
- set_np_xspc_jachar(Nx, first_char)
- else
- set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head)
+ if getid(first_char)==id_glyph then
+ if getfont(first_char) == (has_attr(first_char, attr_curjfnt) or -1) then
+ set_np_xspc_jachar(Nx, first_char)
+ else
+ set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
+ end
+ else -- math_node
+ set_np_xspc_alchar(Nx, -1,first_char)
end
end
end
-------------------- Np の計算と情報取得
luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
- function (Np, lp, Nq, box_stack_level)
- if Np.nuc then return Np
- else
- return Np -- your code
- end
- end)
+ function (Np, lp, Nq)
+ if Np.nuc then return Np
+ else
+ return Np -- your code
+ end
+ end)
luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
- function (stat, Nq, Np, box_stack_level) return false end)
+ function (stat, Nq, Np) return false end)
-- calc next Np
+do
+
local function set_attr_icflag_processed(p)
- local a = has_attr(p, attr_icflag) or 0
- if a<= ITALIC then
- set_attr(p, attr_uniqid, uniq_id)
+ if get_attr_icflag(p)<= ITALIC then
set_attr(p, attr_icflag, PROCESSED)
end
end
-local function check_next_ickern()
- if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
- set_attr(lp, attr_icflag, IC_PROCESSED)
- set_attr(lp, attr_uniqid, uniq_id)
- Np.last = lp; lp = node_next(lp)
- else Np.last = Np.nuc end
+local function check_next_ickern(lp)
+ if lp and getid(lp) == id_kern and ITALIC == get_attr_icflag(lp) then
+ set_attr(lp, attr_icflag, IC_PROCESSED)
+ Np.last = lp; return node_next(lp)
+ else
+ Np.last = Np.nuc; return lp
+ end
end
-local function calc_np_pbox()
- local uid = has_attr(lp, attr_uniqid)
- Np.first = lp; Np.id = id_pbox
- lpa = KINSOKU -- dummy=
- while lp~=last and lpa>=PACKED and lpa~=BOXBDD
- and has_attr(lp, attr_uniqid) == uid do
- Np.nuc = lp; set_attr(lp, attr_uniqid, uniq_id)
- lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
+local function calc_np_pbox(lp)
+ Np.first = Np.first or lp; Np.id = id_pbox
+ local lpa, nc = KINSOKU, nil
+ set_attr(lp, attr_icflag, get_attr_icflag(lp));
+ while lp and (lpa>=PACKED) and (lpa<BOXBDD) do
+ nc, lp = lp, node_next(lp); lpa = lp and has_attr(lp, attr_icflag) or 0
+ -- get_attr_icflag() ではいけない！
end
- check_next_ickern()
+ Np.nuc = nc
+ return check_next_ickern(lp)
end
+
local calc_np_auxtable = {
- [id_glyph] = function()
- Np.first = lp
- if lp.font == has_attr(lp, attr_curjfnt) then
- Np.id = id_jglyph
- else
- Np.id = id_glyph
- end
- Np.first = lp; Np.nuc = lp; set_attr_icflag_processed(lp)
- lp = node_next(lp); check_next_ickern(); return true
- end,
- [id_hlist] = function()
- Np.first = lp; Np.last = lp; Np.nuc = lp;
- set_attr_icflag_processed(lp)
- if lp.shift~=0 then
- Np.id = id_box_like
- else
- Np.id = id_hlist
- end
- lp = node_next(lp); return true
- end,
- [id_vlist] = function()
- Np.first = lp; Np.nuc = lp; Np.last = lp;
- Np.id = id_box_like; set_attr_icflag_processed(lp);
- lp = node_next(lp); return true
- end,
- [id_rule] = function()
- Np.first = lp; Np.nuc = lp; Np.last = lp;
- Np.id = id_box_like; set_attr_icflag_processed(lp);
- lp = node_next(lp); return true
- end,
- [id_ins] = function()
- set_attr_icflag_processed(lp); lp = node_next(lp)
- return false
- end,
- [id_mark] = function()
- set_attr_icflag_processed(lp); lp = node_next(lp)
- return false
- end,
- [id_adjust] = function()
- set_attr_icflag_processed(lp); lp = node_next(lp)
- return false
- end,
- [id_disc] = function()
- Np.first = lp; Np.nuc = lp; set_attr_icflag_processed(lp);
- Np.last = lp; Np.id = id_disc; lp = node_next(lp); return true
- end,
- [id_whatsit] = function()
- if lp.subtype==sid_user then
- if lp.user_id==30111 then
- local lq = node_next(lp)
- head = node_remove(head, lp); node_free(lp); lp = lq; ihb_flag = true
- else
- set_attr_icflag_processed(lp)
- luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo"
- , Np, lp, Nq, box_stack_level)
- lp = node_next(lp)
- if Np.nuc then
- Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc; return true
- end
- end
- else
- set_attr_icflag_processed(lp); lp = node_next(lp)
- end
- return false
- end,
- [id_math] = function()
- Np.first = lp; Np.nuc = lp;
- set_attr_icflag_processed(lp); lp = node_next(lp)
- while lp.id~=id_math do
- set_attr_icflag_processed(lp); lp = node_next(lp)
- end
- set_attr_icflag_processed(lp);
- Np.last = lp; Np.id = id_math; lp = node_next(lp);
- return true
- end,
- [id_glue] = function()
- Np.first = lp; Np.nuc = lp; set_attr_icflag_processed(lp);
- Np.last = lp; Np.id = id_glue; lp = node_next(lp); return true
- end,
- [id_kern] = function()
- Np.first = lp
- if lp.subtype==2 then
- set_attr_icflag_processed(lp); lp = node_next(lp)
- set_attr_icflag_processed(lp); lp = node_next(lp)
- set_attr_icflag_processed(lp); lp = node_next(lp)
- set_attr_icflag_processed(lp); Np.nuc = lp
- if lp.font == has_attr(lp, attr_curjfnt) then
- Np.id = id_jglyph
- else
- Np.id = id_glyph
- end
- lp = node_next(lp); check_next_ickern();
- else
- Np.id = id_kern; set_attr_icflag_processed(lp);
- Np.last = lp; lp = node_next(lp)
- end
- return true
- end,
- [id_penalty] = function()
- Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
- lp = node_next(lp); return false
- end,
- [13] = function()
- Np.first = lp; Np.nuc = lp; Np.last = lp;
- Np.id = id_box_like; set_attr_icflag_processed(lp);
- lp = node_next(lp); return true
- end,
+ [id_glyph] = function (lp)
+ Np.first, Np.nuc = (Np.first or lp), lp;
+ Np.id = (getfont(lp) == (has_attr(lp, attr_curjfnt) or -1))
+ and id_jglyph or id_glyph
+ return true, check_next_ickern(node_next(lp));
+ end,
+ [id_hlist] = function(lp)
+ Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
+ set_attr(lp, attr_icflag, PROCESSED)
+ Np.id = (getfield(lp, 'shift')~=0) and id_box_like or id_hlist
+ return true, node_next(lp)
+ end,
+ box_like = function(lp)
+ Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
+ Np.id = id_box_like; set_attr(lp, attr_icflag, PROCESSED)
+ return true, node_next(lp);
+ end,
+ skip = function(lp)
+ set_attr(lp, attr_icflag, PROCESSED)
+ return false, node_next(lp)
+ end,
+ [id_whatsit] = function(lp)
+ local lps = getsubtype(lp)
+ if lps==sid_user then
+ if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
+ local lq = node_next(lp);
+ head = node_remove(head, lp); node_free(lp); ihb_flag = true
+ return false, lq;
+ else
+ set_attr(lp, attr_icflag, PROCESSED)
+ luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
+ Np, lp, Nq)
+ if Np.nuc then
+ Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
+ return true, node_next(lp)
+ else
+ return false, node_next(lp)
+ end
+ end
+ else
+ -- we do special treatment for these whatsit nodes.
+ if lps == sid_start_link or lps == sid_start_thread then
+ Np.first = lp
+ elseif lps == sid_end_link or lps == sid_end_thread then
+ Np.first, Nq.last = nil, lp;
+ end
+ set_attr(lp, attr_icflag, PROCESSED)
+ return false, node_next(lp)
+ end
+ end,
+ [id_math] = function(lp)
+ Np.first, Np.nuc = (Np.first or lp), lp;
+ set_attr(lp, attr_icflag, PROCESSED)
+ lp = node_end_of_math(lp)
+ set_attr(lp, attr_icflag, PROCESSED)
+ Np.last, Np.id = lp, id_math;
+ return true, node_next(lp);
+ end,
+ discglue = function(lp)
+ Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
+ Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
+ return true, node_next(lp)
+ end,
+ [id_kern] = function(lp)
+ Np.first = Np.first or lp
+ if getsubtype(lp)==2 then
+ set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
+ set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
+ set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
+ set_attr(lp, attr_icflag, PROCESSED); Np.nuc = lp
+ Np.id = (getfont(lp) == (has_attr(lp, attr_curjfnt) or -1)) and id_jglyph or id_glyph
+ return true, check_next_ickern(node_next(lp));
+ else
+ Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
+ Np.last = lp; return true, node_next(lp)
+ end
+ end,
+ [id_penalty] = function(lp)
+ Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
+ return false, node_next(lp)
+ end,
}
-
-local function calc_np()
+calc_np_auxtable[id_vlist] = calc_np_auxtable.box_like
+calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
+calc_np_auxtable[13] = calc_np_auxtable.box_like
+calc_np_auxtable[id_ins] = calc_np_auxtable.skip
+calc_np_auxtable[id_mark] = calc_np_auxtable.skip
+calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
+calc_np_auxtable[id_disc] = calc_np_auxtable.discglue
+calc_np_auxtable[id_glue] = calc_np_auxtable.discglue
+
+function calc_np(lp)
+ local k
-- We assume lp = node_next(Np.last)
- local lpi, lpa, Nr
- Nr = Nq; for k in pairs(Nr) do Nr[k] = nil end
- Nq = Np; Np = Nr
- for k in pairs(Bp) do Bp[k] = nil end
- ihb_flag = false
- while lp ~= last do
- lpa = has_attr(lp, attr_icflag) or 0
+ Np, Nq, ihb_flag = Nq, Np, nil
+ -- We clear `predefined' entries of Np before pairs() loop,
+ -- because using only pairs() loop is slower.
+ Np.post, Np.pre, Np.xspc = nil, nil, nil
+ Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
+ Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
+ for k in pairs(Np) do Np[k] = nil end
+
+ for k = 1,#Bp do Bp[k] = nil end
+ while lp do
+ local lpa = has_attr(lp, attr_icflag) or 0
+ -- unbox 由来ノードの検出
if lpa>=PACKED then
- if lpa == BOXBDD then
- local lq = node_next(lp)
+ if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
+ local lq = node_next(lp)
head = node_remove(head, lp); node_free(lp); lp = lq
- else calc_np_pbox(); return
+ else return calc_np_pbox(lp)
end -- id_pbox
- elseif calc_np_auxtable[lp.id]() then return end
+ else
+ k, lp = calc_np_auxtable[getid(lp)](lp)
+ if k then return lp end
+ end
end
- Np = nil; return
+ Np = nil; return lp
+end
+
end
+local calc_np = calc_np
-- extract informations from Np
-- We think that "Np is a Japanese character" if Np.met~=nil,
-- "Np is an alphabetic character" if Np.pre~=nil,
-- "Np is not a character" otherwise.
+local after_hlist, after_alchar, extract_np
+do
+ local PRE = luatexja.stack_table_index.PRE
+ local POST = luatexja.stack_table_index.POST
+ local KCAT = luatexja.stack_table_index.KCAT
+ local XSP = luatexja.stack_table_index.XSP
-- 和文文字のデータを取得
-function set_np_xspc_jachar(Nx, x)
- local z = ltjf_font_metric_table[x.font]
- local c = x.char
- local cls = ltjf_find_char_class(c, z)
- local m = ltjf_metrics[z.jfm]
- set_attr(x, attr_jchar_class, cls)
- Nx.class = cls
- Nx.char = c
- Nx.size= z.size
- Nx.met = m
- Nx.var = z.var
- Nx.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
- Nx.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
- z = fast_find_char_class('lineend', m)
- local y = m.size_cache[Nx.size].char_type[Nx.class]
- if y.kern and y.kern[z] then
- Nx.lend = y.kern[z]
- else
- Nx.lend = 0
- end
- y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
- Nx.xspc_before = (y%2==1)
- Nx.xspc_after = (y>=2)
- Nx.auto_kspc = (has_attr(x, attr_autospc)==1)
- Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
-end
+ local attr_jchar_class = luatexbase.attributes['ltj@charclass']
+ local attr_orig_char = luatexbase.attributes['ltj@origchar']
+ local attr_autospc = luatexbase.attributes['ltj@autospc']
+ local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
+ function set_np_xspc_jachar(Nx, x)
+ local m = ltjf_font_metric_table[getfont(x)]
+ local cls, c = slow_find_char_class(has_attr(x, attr_orig_char), m, getchar(x))
+ Nx.met, Nx.char = m, c; Nx.class = cls;
+ if cls~=0 then set_attr(x, attr_jchar_class, cls) end
+ Nx.pre = table_current_stack[PRE + c] or 0
+ Nx.post = table_current_stack[POST + c] or 0
+ Nx.xspc = table_current_stack[XSP + c] or 3
+ Nx.kcat = table_current_stack[KCAT + c] or 0
+ Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
+ end
+ local set_np_xspc_jachar = set_np_xspc_jachar
-- 欧文文字のデータを取得
-local ligature_head = 1
-local ligature_tail = 2
-function set_np_xspc_alchar(Nx, c,x, lig)
- if c~=-1 then
- if lig == ligature_head then
- while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
- x = x.components; c = x.char
+ local floor = math.floor
+ function set_np_xspc_alchar(Nx, c,x, lig)
+ if c~=-1 then
+ local f = (lig ==1) and nullfunc or node_tail
+ local xc, xs = getfield(x, 'components'), getsubtype(x)
+ while xc and xs and xs%4>=2 do
+ x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
end
+ c = getchar(x)
+ Nx.pre = table_current_stack[PRE + c] or 0
+ Nx.post = table_current_stack[POST + c] or 0
+ Nx.xspc = table_current_stack[XSP + c] or 3
+ Nx.char = 'jcharbdd'
else
- while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
- x = node_tail(x.components); c = x.char
- end
+ Nx.pre, Nx.post, Nx.char = 0, 0, -1
+ Nx.xspc = table_current_stack[XSP - 1] or 3
end
- Nx.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
- Nx.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
- Nx.char = 'jcharbdd'
- else
- Nx.pre = 0; Nx.post = 0; Nx.char = -1
+ Nx.met = nil
+ Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
end
- Nx.met = nil
- local y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
- Nx.xspc_before = (y%2==1)
- Nx.xspc_after = (y>=2)
- Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
-end
+ local set_np_xspc_alchar = set_np_xspc_alchar
-- Np の情報取得メインルーチン
-local function extract_np()
- local x = Np.nuc;
- if Np.id == id_jglyph then set_np_xspc_jachar(Np, x)
- elseif Np.id == id_glyph then set_np_xspc_alchar(Np, x.char, x, ligature_head)
- elseif Np.id == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
- elseif Np.id == id_pbox then Np.last_char = check_box_high(Np, Np.first, node.next(Np.last))
- elseif Np.id == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
- elseif Np.id == id_math then set_np_xspc_alchar(Np, -1, x)
- end
-end
-
--- change the information for the next loop
--- (will be done if Nx is an alphabetic character or a hlist)
-function after_hlist(Nx)
- if Nx.last_char then
- if Nx.last_char.font == has_attr(Nx.last_char, attr_curjfnt) then
- set_np_xspc_jachar(Nx, Nx.last_char);
+ extract_np = function ()
+ local x, i = Np.nuc, Np.id;
+ if i == id_jglyph then return set_np_xspc_jachar(Np, x)
+ elseif i == id_glyph then return set_np_xspc_alchar(Np, getchar(x), x, 1)
+ elseif i == id_hlist then Np.last_char = check_box_high(Np, getlist(x), nil)
+ elseif i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node_next(Np.last))
+ elseif i == id_disc then Np.last_char = check_box_high(Np, getfield(x, 'replace'), nil)
+ elseif i == id_math then return set_np_xspc_alchar(Np, -1, x)
+ end
+ end
+
+ -- change the information for the next loop
+ -- (will be done if Nx is an alphabetic character or a hlist)
+ after_hlist = function (Nx)
+ local s = Nx.last_char
+ if s then
+ if getid(s)==id_glyph then
+ if getfont(s) == (has_attr(s, attr_curjfnt) or -1) then
+ set_np_xspc_jachar(Nx, s)
+ else
+ set_np_xspc_alchar(Nx, getchar(s), s, 2)
+ end
+ else
+ set_np_xspc_alchar(Nx, -1, s)
+ end
else
- set_np_xspc_alchar(Nx, Nx.last_char.char,Nx.last_char, ligature_tail)
+ Nx.pre, Nx.met = nil, nil
end
- else
- Nx.pre = nil; Nx.met = nil
end
-end
+
+ after_alchar = function (Nx)
+ local x = Nx.nuc
+ return set_np_xspc_alchar(Nx, getchar(x), x, 2)
+ end
-local function after_alchar(Nx)
- local x = Nx.nuc
- set_np_xspc_alchar(Nx, x.char,x, ligature_tail)
end
-
-------------------- 最下層の処理
-local function lineend_fix(g)
- if g and g.id==id_kern then
- Nq.lend = 0
- elseif Nq.lend~=0 then
- if not g then
- g = node_new(id_kern); g.subtype = 1; g.kern = -Nq.lend;
- set_attr(g, attr_icflag, LINEEND)
- set_attr(g, attr_uniqid, uniq_id)
- elseif g.id==id_kern then
- g.kern = g.kern - Nq.lend
- else
- g.spec.width = g.spec.width - Nq.lend
- end
- end
- return g
-end
-
-- change penalties (or create a new penalty, if needed)
local function handle_penalty_normal(post, pre, g)
local a = (pre or 0) + (post or 0)
if #Bp == 0 then
- if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
+ if (a~=0 and not(g and getid(g)==id_kern)) then
local p = node_new(id_penalty)
if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
- p.penalty = a
- head = node_insert_before(head, Np.first, p)
- table_insert(Bp, p);
- set_attr(p, attr_icflag, KINSOKU)
- set_attr(p, attr_uniqid, uniq_id)
+ setfield(p, 'penalty', a)
+ head = insert_before(head, Np.first, p)
+ Bp[1]=p;
+ set_attr(p, attr_icflag, KINSOKU)
end
- else for i, v in pairs(Bp) do add_penalty(v,a) end
+ else for _, v in pairs(Bp) do add_penalty(v,a) end
end
end
local function handle_penalty_always(post, pre, g)
local a = (pre or 0) + (post or 0)
if #Bp == 0 then
- if not (g and g.id==id_glue) or Nq.lend~=0 then
+ if not (g and getid(g)==id_glue) then
local p = node_new(id_penalty)
if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
- p.penalty = a
- head = node_insert_before(head, Np.first, p)
- table_insert(Bp, p)
- set_attr(p, attr_icflag, KINSOKU)
- set_attr(p, attr_uniqid, uniq_id)
+ setfield(p, 'penalty', a)
+ head = insert_before(head, Np.first, p)
+ Bp[1]=p
+ set_attr(p, attr_icflag, KINSOKU)
end
- else for i, v in pairs(Bp) do add_penalty(v,a) end
+ else for _, v in pairs(Bp) do add_penalty(v,a) end
end
end
local function handle_penalty_suppress(post, pre, g)
local a = (pre or 0) + (post or 0)
if #Bp == 0 then
- if g and g.id==id_glue then
+ if g and getid(g)==id_glue then
local p = node_new(id_penalty)
- p.penalty = 10000; head = node_insert_before(head, Np.first, p)
- table_insert(Bp, p);
- set_attr(p, attr_icflag, KINSOKU)
- set_attr(p, attr_uniqid, uniq_id)
+ setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
+ Bp[1]=p
+ set_attr(p, attr_icflag, KINSOKU)
end
- else for i, v in pairs(Bp) do add_penalty(v,a) end
+ else for _, v in pairs(Bp) do add_penalty(v,a) end
end
end
-- 和文文字間の JFM glue を node 化
-local function new_jfm_glue(Nn, bc, ac)
+local function new_jfm_glue(m, bc, ac)
-- bc, ac: char classes
- local g = nil
- local z = Nn.met.size_cache[Nn.size].char_type[bc]
- if z.glue and z.glue[ac] then
- local h = node_new(id_glue_spec)
- h.width = z.glue[ac][1]
- h.stretch = z.glue[ac][2]
- h.shrink = z.glue[ac][3]
- h.stretch_order=0; h.shrink_order=0
- g = node_new(id_glue)
- g.subtype = 0; g.spec = h
- elseif z.kern and z.kern[ac] then
- g = node_new(id_kern)
- g.subtype = 1; g.kern = z.kern[ac]
- end
- if g then
- set_attr(g, attr_icflag, FROM_JFM); set_attr(g, attr_uniqid, uniq_id)
+ local g, d = m.char_type[bc][ac], 0
+ local n
+ if g then
+ n,d = node_copy(g[2]), g[3]
+ if g[1] then
+ local f = node_new(id_glue)
+ set_attr(f, attr_icflag, g[4])
+ setfield(f, 'spec', n)
+ return f, d
+ end
end
- return g
+ return n, d
end
-- Nq.last (kern w) .... (glue/kern g) Np.first
-local function real_insert(w, g)
- if w~=0 then
- local h = node_new(id_kern)
- set_attr(h, attr_icflag, LINE_END)
- set_attr(h, attr_uniqid, uniq_id)
- h.kern = w; h.subtype = 1
- head = node_insert_after(head, Nq.last, h)
- end
+local function real_insert(g)
if g then
- head = node_insert_before(head, Np.first, g)
+ head = insert_before(head, Np.first, g)
Np.first = g
end
end
+
-------------------- 和文文字間空白量の決定
-- get kanjiskip
-local function get_kanji_skip_from_jfm(Nn)
- local i = Nn.met.size_cache[Nn.size].kanjiskip
- if i then
- return { i[1], i[2], i[3] }
- else return nil
+local get_kanjiskip
+local get_kanjiskip_normal, get_kanjiskip_jfm
+do
+ local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
+ local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
+ get_kanjiskip_normal = function ()
+ if Np.auto_kspc or Nq.auto_kspc then
+ return node_copy(kanji_skip)
+ else
+ local g = node_copy(zero_glue)
+ set_attr(g, attr_icflag, KANJI_SKIP)
+ return g
+ end
end
-end
-local function get_kanjiskip()
- local g = node_new(id_glue)
- if Np.auto_kspc or Nq.auto_kspc then
- if kanji_skip.width == max_dimen then
+
+ get_kanjiskip_jfm = function ()
+ local g
+ if Np.auto_kspc or Nq.auto_kspc then
+ g = node_new(id_glue); --copy_attr(g, Nq.nuc)
local gx = node_new(id_glue_spec);
- gx.stretch_order = 0; gx.shrink_order = 0
- local bk = get_kanji_skip_from_jfm(Nq)
- local ak
- if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
- ak = nil
+ setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
+ local pm, qm = Np.met, Nq.met
+ local bk = qm.kanjiskip or {0, 0, 0}
+ if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
+ setfield(gx, 'width', bk[1])
+ setfield(gx, 'stretch', bk[2])
+ setfield(gx, 'shrink', bk[3])
else
- ak = get_kanji_skip_from_jfm(Np)
+ local ak = pm.kanjiskip or {0, 0, 0}
+ setfield(gx, 'width', round(diffmet_rule(bk[1], ak[1])))
+ setfield(gx, 'stretch', round(diffmet_rule(bk[2], ak[2])))
+ setfield(gx, 'shrink', -round(diffmet_rule(-bk[3], -ak[3])))
end
- if bk then
- if ak then
- gx.width = round(diffmet_rule(bk[1], ak[1]))
- gx.stretch = round(diffmet_rule(bk[2], ak[2]))
- gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
- else
- gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
- end
- elseif ak then
- gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
- else node_free(gx); gx = get_zero_spec() -- fallback
- end
- g.spec = gx
- else g.spec=node_copy(kanji_skip); node_free(gx) end
- else
- g.spec = get_zero_spec(); node_free(gx)
+ setfield(g, 'spec', gx)
+ else
+ g = node_copy(zero_glue)
+ end
+ set_attr(g, attr_icflag, KANJI_SKIP_JFM)
+ return g
end
- set_attr(g, attr_icflag, KANJI_SKIP)
- set_attr(g, attr_uniqid, uniq_id)
- return g
end
-local function calc_ja_ja_aux(gb,ga)
- if not gb then
- return ga
- else
- if not ga then return gb end
- local k = node.type(gb.id) .. node.type(ga.id)
- if k == 'glueglue' then
+local calc_ja_ja_aux
+do
+ local bg_ag = 2*id_glue - id_glue
+ local bg_ak = 2*id_glue - id_kern
+ local bk_ag = 2*id_kern - id_glue
+ local bk_ak = 2*id_kern - id_kern
+
+ calc_ja_ja_aux = function (gb,ga, db, da)
+ local rbb, rab = (1-db)/2, (1-da)/2 -- 「前の文字」由来のグルーの割合
+ local rba, raa = (1+db)/2, (1+da)/2 -- 「前の文字」由来のグルーの割合
+ if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
+ and diffmet_rule ~= math.two_paverage then
+ rbb, rab, rba, raa = 1,0,0,1
+ end
+ if not gb then
+ if ga then
+ gb = node_new(id_kern); setfield(gb, 'kern', 0)
+ else return nil end
+ elseif not ga then
+ ga = node_new(id_kern); setfield(ga, 'kern', 0)
+ end
+
+ local k = 2*getid(gb) - getid(ga)
+ if k == bg_ag then
+ local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
-- 両方とも glue．
- gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
- gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
- gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
+ local bd, ad = getfield(bs, 'width'), getfield(as, 'width')
+ setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
+ bd, ad = getfield(bs, 'stretch'), getfield(as, 'stretch')
+ setfield(bs, 'stretch', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
+ bd, ad = getfield(bs, 'shrink'), getfield(as, 'shrink')
+ setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd - rba*ad, -rab*bd - raa*ad)))
node_free(ga)
return gb
- elseif k == 'kernkern' then
+ elseif k == bk_ak then
-- 両方とも kern．
- gb.kern = round(diffmet_rule(gb.kern, ga.kern))
+ local bd, ad = getfield(gb, 'kern'), getfield(ga, 'kern')
+ setfield(gb, 'kern', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
node_free(ga)
return gb
- elseif k == 'kernglue' then
+ elseif k == bk_ag then
+ local as = getfield(ga, 'spec')
-- gb: kern, ga: glue
- ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
- ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
- ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
+ local bd, ad = getfield(gb, 'kern'), getfield(as, 'width')
+ setfield(as, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
+ ad = getfield(as, 'stretch')
+ setfield(bs, 'stretch', round(diffmet_rule(rba*ad, raa*ad)))
+ ad = getfield(as, 'shrink')
+ setfield(bs, 'shrink', -round(diffmet_rule(-rba*ad, -raa*ad)))
node_free(gb)
return ga
else
+ local bs = getfield(gb, 'spec')
-- gb: glue, ga: kern
- gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
- gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
- gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
+ local bd, ad = getfield(bs, 'width'), getfield(ga, 'kern')
+ setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
+ bd = getfield(bs, 'stretch')
+ setfield(bs, 'stretch', round(diffmet_rule(rbb*bd, rab*bd)))
+ bd = getfield(bs, 'shrink')
+ setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd, -rab*bd)))
node_free(ga)
return gb
end
local function calc_ja_ja_glue()
if ihb_flag then return nil
- elseif (Nq.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
- return new_jfm_glue(Nq, Nq.class, Np.class)
else
- local g = new_jfm_glue(Nq, Nq.class,
- fast_find_char_class('diffmet',Nq.met))
- local h = new_jfm_glue(Np, fast_find_char_class('diffmet',Np.met),
- Np.class)
- return calc_ja_ja_aux(g,h)
+ local qm, pm = Nq.met, Np.met
+ if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
+ return new_jfm_glue(qm, Nq.class, Np.class)
+ else
+ local npn, nqn = Np.nuc, Nq.nuc
+ local gb, db = new_jfm_glue(qm, Nq.class,
+ slow_find_char_class(has_attr(npn, attr_orig_char),
+ qm, getchar(npn)))
+ local ga, da = new_jfm_glue(pm,
+ slow_find_char_class(has_attr(nqn, attr_orig_char),
+ pm, getchar(nqn)),
+ Np.class)
+ return calc_ja_ja_aux(gb, ga, db, da);
+ end
end
end
-------------------- 和欧文間空白量の決定
-- get xkanjiskip
-local function get_xkanji_skip_from_jfm(Nn)
- local i = Nn.met.size_cache[Nn.size].xkanjiskip
- if i then
- return { i[1], i[2], i[3] }
- else return nil
+local get_xkanjiskip
+local get_xkanjiskip_normal, get_xkanjiskip_jfm
+do
+ local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
+ local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
+ get_xkanjiskip_normal = function (Nn)
+ if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
+ local f = node_copy(xkanji_skip)
+ return f
+ else
+ local g = node_copy(zero_glue)
+ set_attr(g, attr_icflag, XKANJI_SKIP)
+ return g
+ end
end
-end
-local function get_xkanjiskip(Nn)
- local g = node_new(id_glue)
- if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
- if xkanji_skip.width == max_dimen then
+ get_xkanjiskip_jfm = function (Nn)
+ local g
+ if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
+ g = node_new(id_glue)
local gx = node_new(id_glue_spec);
- gx.stretch_order = 0; gx.shrink_order = 0
- local bk = get_xkanji_skip_from_jfm(Nn)
- if bk then
- gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
- else node_free(gx); gx = get_zero_spec() -- fallback
- end
- g.spec = gx
- else g.spec=node_copy(xkanji_skip) end
- else
- g.spec = get_zero_spec()
+ setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
+ local bk = Nn.met.xkanjiskip or {0, 0, 0}
+ setfield(gx, 'width', bk[1])
+ setfield(gx, 'stretch', bk[2])
+ setfield(gx, 'shrink', bk[3])
+ setfield(g, 'spec', gx)
+ else
+ g = node_copy(zero_glue)
+ end
+ set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
+ return g
end
- set_attr(g, attr_icflag, XKANJI_SKIP)
- set_attr(g, attr_uniqid, uniq_id)
- return g
end
-
-------------------- 隣接した「塊」間の処理
local function get_OA_skip()
if not ihb_flag then
- local c = Nq.char or 'jcharbdd'
- return new_jfm_glue(Np, fast_find_char_class(c,Np.met), Np.class)
+ local pm = Np.met
+ return new_jfm_glue(pm,
+ fast_find_char_class(((Nq.id == id_math and -1) or (type(Nq.char)=='string' and Nq.char or 'jcharbdd')), pm), Np.class)
else return nil
end
end
local function get_OB_skip()
if not ihb_flag then
- local c = Np.char or 'jcharbdd'
- return new_jfm_glue(Nq, Nq.class, fast_find_char_class(c,Nq.met))
+ local qm = Nq.met
+ return new_jfm_glue(qm, Nq.class,
+ fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), qm))
else return nil
end
end
-- (anything) .. jachar
-local function handle_np_jachar()
- local g
- if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id==id_pbox_w) and Nq.met) then
- g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
- g = lineend_fix(g)
- handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
- elseif Nq.met then -- Nq.id==id_hlist
- g = get_OA_skip() or get_kanjiskip() -- O_A->K
- handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
+local function handle_np_jachar(mode)
+ local qid = Nq.id
+ if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
+ local g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
+ handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g)
+ elseif Nq.met then -- qid==id_hlist
+ local g = get_OA_skip() or get_kanjiskip() -- O_A->K
+ handle_penalty_normal(0, Np.pre, g); real_insert(g)
elseif Nq.pre then
- g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
- if Nq.id==id_hlist then Nq.post = 0 end
- handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
+ local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
+ handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
else
- g = get_OA_skip() -- O_A
- if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
- elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
+ local g = get_OA_skip() -- O_A
+ if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
+ elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
else handle_penalty_always(0, Np.pre, g)
end
- real_insert(0, g)
+ real_insert(g)
end
- -- \jcharwidowpenalty 挿入予定箇所更新
- if mode and ltjs_get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
- widow_Np.first = Np.first;
- local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
+ if mode and Np.kcat%2~=1 then
+ widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
end
end
+
-- jachar .. (anything)
local function handle_nq_jachar()
- local g
- if Np.pre then
- if Np.id==id_hlist then Np.pre = 0 end
- g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
- g = lineend_fix(g)
- handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
+ if Np.pre then
+ local g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
+ handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
else
- g = get_OB_skip(); g = lineend_fix(g) -- O_B
+ local g = get_OB_skip() -- O_B
if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
else handle_penalty_always(Nq.post, 0, g)
end
- real_insert(Nq.lend, g)
+ real_insert(g)
end
end
--- (anything) .. (和文文字で終わる hlist)
+-- (anything) .. (和文文字で始まる hlist)
local function handle_np_ja_hlist()
- local g
- if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
- g = get_OB_skip() or get_kanjiskip() -- O_B->K
- g = lineend_fix(g)
- handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
+ local qid = Nq.id
+ if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
+ local g = get_OB_skip() or get_kanjiskip() -- O_B->K
+ handle_penalty_normal(Nq.post, 0, g); real_insert(g)
elseif Nq.met then -- Nq.id==id_hlist
- g = get_kanjiskip() -- K
- handle_penalty_suppress(0, 0, g); real_insert(0, g)
+ local g = get_kanjiskip() -- K
+ handle_penalty_suppress(0, 0, g); real_insert(g)
elseif Nq.pre then
- g = get_xkanjiskip(Np) -- X
- handle_penalty_suppress(0, 0, g); real_insert(0, g)
+ local g = get_xkanjiskip(Np) -- X
+ handle_penalty_suppress(0, 0, g); real_insert(g)
end
end
-- (和文文字で終わる hlist) .. (anything)
local function handle_nq_ja_hlist()
- local g = nil
if Np.pre then
- g = get_xkanjiskip(Nq) -- X
- handle_penalty_suppress(0, 0, g); real_insert(0, g)
+ local g = get_xkanjiskip(Nq) -- X
+ handle_penalty_suppress(0, 0, g); real_insert(g)
end
end
+
-- Nq が前側のクラスタとなることによる修正
-local function adjust_nq()
- if Nq.id==id_glyph then after_alchar(Nq)
- elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
- elseif Nq.id == id_pbox_w then
- luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
- false, Nq, Np, box_stack_level)
+do
+ local adjust_nq_aux = {
+ [id_glyph] = function()
+ local x = Nq.nuc
+ return set_np_xspc_alchar(Nq, getchar(x),x, 2)
+ end, -- after_alchar(Nq)
+ [id_hlist] = function() after_hlist(Nq) end,
+ [id_pbox] = function() after_hlist(Nq) end,
+ [id_disc] = function() after_hlist(Nq) end,
+ [id_pbox_w] = function()
+ luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
+ false, Nq, Np)
+ end,
+ }
+
+ function adjust_nq()
+ local x = adjust_nq_aux[Nq.id]
+ if x then x() end
end
end
+
-------------------- 開始・終了時の処理
+do
-- リスト末尾の処理
-local function handle_list_tail()
+local JWP = luatexja.stack_table_index.JWP
+local function handle_list_tail(mode)
adjust_nq(); Np = Nq
if mode then
- -- the current list is to be line-breaked:
- if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
- if Np.lend~=0 then
- g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
- set_attr(g, attr_icflag, BOXBDD)
- node_insert_after(head, Np.last, g)
- end
- end
+ -- the current list is to be line-breaked.
-- Insert \jcharwidowpenalty
- Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
+ Bp = widow_Bp; Np = widow_Np
if Np.first then
handle_penalty_normal(0,
- ltjs_get_penalty_table('jwp', 0, 0, box_stack_level))
+ table_current_stack[JWP] or 0)
end
else
-- the current list is the contents of a hbox
- if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
- local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met))
+ local npi, pm = Np.id, Np.met
+ if npi == id_jglyph or (npi==id_pbox and pm) then
+ local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
if g then
set_attr(g, attr_icflag, BOXBDD)
- head = node_insert_after(head, Np.last, g)
+ head = insert_after(head, Np.last, g)
end
end
end
end
-- リスト先頭の処理
-local function handle_list_head()
- if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
+local function handle_list_head(par_indented)
+ local npi, pm = Np.id, Np.met
+ if npi == id_jglyph or (npi==id_pbox and pm) then
if not ihb_flag then
- local g
- if par_indented then
- g = new_jfm_glue(Np, fast_find_char_class('parbdd',Np.met), Np.class)
- else
- g = new_jfm_glue(Np, fast_find_char_class('boxbdd',Np.met), Np.class)
- end
+ local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
if g then
set_attr(g, attr_icflag, BOXBDD)
- if g.id==id_glue and #Bp==0 then
+ if getid(g)==id_glue and #Bp==0 then
local h = node_new(id_penalty)
- h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
+ setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
end
- head = node_insert_before(head, Np.first, g)
+ head = insert_before(head, Np.first, g)
end
end
end
end
-- initialize
-local function init_var()
- uniq_id = uniq_id +1
- if uniq_id == 0x7FFFFFF then uniq_id = 0 end
- lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
- par_indented = false
- box_stack_level = ltjp.box_stack_level
- kanji_skip=skip_table_to_spec('kanjiskip')
- xkanji_skip=skip_table_to_spec('xkanjiskip')
- Np = {
- auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
- first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
- post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
- }
- Nq = {
- auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
- first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
- post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
- }
- if mode then
- -- the current list is to be line-breaked:
- -- hbox from \parindent is skipped.
- while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
- or ((lp.id==id_hlist) and (lp.subtype==3))) do
- if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
- lp=node_next(lp) end
- last=node.tail(head)
- else
- -- the current list is the contents of a hbox:
- -- insert a sentinelEG
- last=node.tail(head); local g = node_new(id_kern)
- node_insert_after(head, last, g); last = g
+-- return value: (the initial cursor lp), (last node)
+local init_var
+do
+ local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
+ local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
+ local KSK = luatexja.stack_table_index.KSK
+ local XSK = luatexja.stack_table_index.XSK
+ init_var = function (mode)
+ -- 1073741823: max_dimen
+ Bp, widow_Bp, widow_Np = {}, {}, {first = nil}
+ table_current_stack = ltjs.table_current_stack
+
+ kanji_skip = node_new(id_glue)
+ setfield(kanji_skip, 'spec', skip_table_to_spec(KSK))
+ set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
+ get_kanjiskip = (getfield(getfield(kanji_skip, 'spec'), 'width') == 1073741823)
+ and get_kanjiskip_jfm or get_kanjiskip_normal
+
+ xkanji_skip = node_new(id_glue)
+ setfield(xkanji_skip, 'spec', skip_table_to_spec(XSK))
+ set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
+ get_xkanjiskip = (getfield(getfield(xkanji_skip, 'spec'), 'width') == 1073741823)
+ and get_xkanjiskip_jfm or get_xkanjiskip_normal
+
+ Np = {
+ auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
+ first=nil, id=nil, last=nil, met=nil, nuc=nil,
+ post=nil, pre=nil, xspc=nil,
+ }
+ Nq = {
+ auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
+ first=nil, id=nil, last=nil, met=nil, nuc=nil,
+ post=nil, pre=nil, xspc=nil,
+ }
+ if mode then
+ -- the current list is to be line-breaked:
+ -- hbox from \parindent is skipped.
+ local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
+ while lp and ((lpi==id_whatsit and lps~=sid_user)
+ or ((lpi==id_hlist) and (lps==3))) do
+ if (lpi==id_hlist) and (lps==3) then par_indented = 'parbdd' end
+ lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
+ return lp, par_indented
+ else
+ return head, 'boxbdd'
+ end
end
end
-local function cleanup()
+local function cleanup(mode)
-- adjust attr_icflag for avoiding error
- tex.attribute[attr_icflag] = -(0x7FFFFFFF)
+ tex.setattribute('global', attr_icflag, 0)
node_free(kanji_skip); node_free(xkanji_skip)
if mode then
local h = node_next(head)
- if h.id == id_penalty and h.penalty == 10000 then
- h = h.next
- if h.id == id_glue and h.subtype == 15 and not h.next then
+ if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
+ h = node_next(h)
+ if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
return false
end
end
return head
else
- head = node_remove(head, last); node_free(last);-- remove the sentinel
+ set_attr(head, attr_icflag,
+ get_attr_icflag(head) + PROCESSED_BEGIN_FLAG);
return head
end
end
-------------------- 外部から呼ばれる関数
-- main interface
-function main(ahead, amode)
+function main(ahead, mode)
if not ahead then return ahead end
- head = ahead; mode = amode; init_var(); calc_np()
+ head = ahead;
+ local lp, par_indented = init_var(mode)
+ lp = calc_np(lp, last)
if Np then
- extract_np(); handle_list_head()
+ extract_np(); handle_list_head(par_indented)
else
- return cleanup()
+ return cleanup(mode, last)
end
- calc_np()
+ lp = calc_np(lp)
while Np do
- extract_np(); adjust_nq()
- -- 挿入部
- if Np.id == id_jglyph then
- handle_np_jachar()
- elseif Np.met then
- if Np.id==id_hlist then handle_np_ja_hlist()
+ extract_np();
+ adjust_nq();
+ local pid, pm = Np.id, Np.met
+ -- 挿入部
+ if pid == id_jglyph then
+ handle_np_jachar(mode)
+ elseif pm then
+ if pid==id_hlist then handle_np_ja_hlist()
else handle_np_jachar() end
elseif Nq.met then
if Nq.id==id_hlist then handle_nq_ja_hlist()
else handle_nq_jachar() end
end
- calc_np()
+ lp = calc_np(lp)
end
- handle_list_tail()
- return cleanup()
+ handle_list_tail(mode)
+ return cleanup(mode)
end
-
--- \inhibitglue
-
-function create_inhibitglue_node()
- local tn = node_new(id_whatsit, sid_user)
- tn.user_id=30111; tn.type=100; tn.value=1
- node.write(tn)
end
--- Node for indicating beginning of a paragraph
--- (for ltjsclasses)
-function create_beginpar_node()
- local tn = node_new(id_whatsit, sid_user)
- tn.user_id=30114; tn.type=100; tn.value=1
- node.write(tn)
-end
+do
+ local IHB = luatexja.userid_table.IHB
+ local BPAR = luatexja.userid_table.BPAR
+ local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
+ local node_write = Dnode.write
+
+ -- \inhibitglue
+ function create_inhibitglue_node()
+ local tn = node_new(id_whatsit, sid_user)
+ setfield(tn, 'user_id', IHB)
+ setfield(tn, 'type', 100)
+ setfield(tn, 'value', 1)
+ node_write(tn)
+ end
-local function whatsit_callback(Np, lp, Nq, bsl)
- if Np.nuc then return Np
- elseif lp.user_id == 30114 then
- Np.first = lp; Np.nuc = lp; Np.last = lp
- Np.char = 'parbdd'
- Np.met = nil
- Np.pre = 0; Np.post = 0
- Np.xspc_before = false
- Np.xspc_after = false
- Np.auto_xspc = false
- return Np
+ -- Node for indicating beginning of a paragraph
+ -- (for ltjsclasses)
+ function create_beginpar_node()
+ local tn = node_new(id_whatsit, sid_user)
+ setfield(tn, 'user_id', BPAR)
+ setfield(tn, 'type', 100)
+ setfield(tn, 'value', 1)
+ node_write(tn)
end
-end
-local function whatsit_after_callback(s, Nq, Np, bsl)
- if not s and Nq.nuc.user_id == 30114 then
- local x, y = node.prev(Nq.nuc), Nq.nuc
- Nq.first, Nq.nuc, Nq.last = x, x, x
- head = node_remove(head, y)
+
+ local function whatsit_callback(Np, lp, Nq)
+ if Np and Np.nuc then return Np
+ elseif Np and getfield(lp, 'user_id') == BPAR then
+ Np.first = lp; Np.nuc = lp; Np.last = lp
+ Np.char = 'parbdd'
+ Np.met = nil
+ Np.pre = 0; Np.post = 0
+ Np.xspc = 0
+ Np.auto_xspc = false
+ return Np
+ end
end
- return s
-end
-luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
- "luatexja.beginpar.np_info", 1)
-luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
- "luatexja.beginpar.np_info_after", 1)
+ local function whatsit_after_callback(s, Nq, Np)
+ if not s and getfield(Nq.nuc, 'user_id') == BPAR then
+ local x, y = node_prev(Nq.nuc), Nq.nuc
+ Nq.first, Nq.nuc, Nq.last = x, x, x
+ head = node_remove(head, y)
+ node_free(y)
+ end
+ return s
+ end
+
+ luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
+ "luatexja.beginpar.np_info", 1)
+ luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
+ "luatexja.beginpar.np_info_after", 1)
+end
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