5 luatexja.load_module 'base'; local ltjb = luatexja.base
6 luatexja.load_module 'direction'; local ltjd = luatexja.direction
7 luatexja.load_module 'charrange'; local ltjc = luatexja.charrange
8 luatexja.load_module 'jfont'; local ltjf = luatexja.jfont
9 luatexja.load_module 'stack'; local ltjs = luatexja.stack
10 luatexja.load_module 'setwidth'; local ltjw = luatexja.setwidth
12 local setfield = node.direct.setfield
13 local getfield = node.direct.getfield
14 local getid = node.direct.getid
15 local getsubtype = node.direct.getsubtype
16 local getlist = node.direct.getlist
17 local getchar = node.direct.getchar
18 local getnucleus = node.direct.getnucleus
19 local getsup = node.direct.getsup
20 local getsub = node.direct.getsub
21 local setnext = node.direct.setnext
22 local setnucleus = node.direct.setnucleus
23 local setsup = node.direct.setsup
24 local setsub = node.direct.setsub
25 local setlist = node.direct.setlist
27 local to_node = node.direct.tonode
28 local to_direct = node.direct.todirect
30 local node_traverse = node.direct.traverse
31 local node_new = node.direct.new
32 local node_next = node.direct.getnext
33 local node_remove = node.direct.remove
34 local node_free = node.direct.flush_node or node.direct.free
35 local get_attr = node.direct.get_attribute
36 local set_attr = node.direct.set_attribute
37 local getcount = tex.getcount
38 local cnt_stack = luatexbase.registernumber 'ltj@@stack'
40 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
41 local attr_dir = luatexbase.attributes['ltj@dir']
42 local attr_icflag = luatexbase.attributes['ltj@icflag']
43 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
44 local attr_jfam = luatexbase.attributes['jfam']
45 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
47 local id_glyph = node.id 'glyph'
48 local id_hlist = node.id 'hlist'
49 local id_vlist = node.id 'vlist'
50 local id_mchar = node.id 'math_char'
51 local id_sub_box = node.id 'sub_box'
52 local id_radical = node.id 'radical'
53 local id_choice = node.id 'choice'
54 local id_accent = node.id 'accent'
55 local id_style = node.id 'style'
56 local id_frac = node.id 'fraction'
57 local id_simple = node.id 'noad'
58 local id_sub_mlist = node.id 'sub_mlist'
59 local id_whatsit = node.id 'whatsit'
60 local sid_user = node.subtype 'user_defined'
61 local DIR = luatexja.userid_table.DIR
62 local dir_node_auto = luatexja.dir_table.dir_node_auto
64 local PROCESSED = luatexja.icflag_table.PROCESSED
66 local ltjf_font_metric_table = ltjf.font_metric_table
67 local ltjf_find_char_class = ltjf.find_char_class
68 local ltjd_get_dir_count = ltjd.get_dir_count
69 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
71 -- table of mathematical characters
72 local is_math_letters = {}
75 -- vcenter noad は軸に揃えるため,欧文ベースライン補正がかかる
76 local function conv_vcenter(sb)
77 local h = getlist(sb) ; local hd = getlist(h)
78 if getid(hd)==id_whatsit and getsubtype(hd)==sid_user
79 and getfield(hd, 'user_id')==DIR then
80 local d = node_next(hd)
81 if getid(d)==id_vlist and get_attr(d, attr_dir)>=dir_node_auto then
82 node_free(hd); setlist(h, nil); node_free(h)
83 setlist(sb, d); set_attr(d, attr_icflag, 0)
90 -- sty : 0 (display or text), 1 (script), >=2 (scriptscript)
91 local function conv_jchar_to_hbox(head, sty)
92 for p in node_traverse(head) do
94 if pid == id_simple or pid == id_accent then
95 if getsubtype(p)==12 then
96 conv_vcenter(getnucleus(p))
98 setnucleus(p, cjh_A(getnucleus(p), sty))
100 setsub(p, cjh_A(getsub(p), sty+1))
101 setsup(p, cjh_A(getsup(p), sty+1))
102 elseif pid == id_choice then
103 setfield(p, 'display', cjh_A(getfield(p, 'display'), 0))
104 setfield(p, 'text', cjh_A(getfield(p, 'text'), 0))
105 setfield(p, 'script', cjh_A(getfield(p, 'script'), 1))
106 setfield(p, 'scriptscript', cjh_A(getfield(p, 'scriptscript'), 2))
107 elseif pid == id_frac then
108 setfield(p, 'num', cjh_A(getfield(p, 'num'), sty+1))
109 setfield(p, 'denom', cjh_A(getfield(p, 'denom'), sty+1))
110 elseif pid == id_radical then
111 setnucleus(p, cjh_A(getnucleus(p), sty))
112 setsub(p, cjh_A(getsub(p), sty+1))
113 setsup(p, cjh_A(getsup(p), sty+1))
114 if getfield(p, 'degree') then
115 setfield(p, 'degree', cjh_A(getfield(p, 'degree'), sty + 1))
117 elseif pid == id_style then
118 local ps = getfield(p, 'style')
119 if ps == "display'" or ps == 'display' or ps == "text'" or ps == 'text' then
121 elseif ps == "script'" or ps == 'script' then
130 local MJT = luatexja.stack_table_index.MJT
131 local MJS = luatexja.stack_table_index.MJS
132 local MJSS = luatexja.stack_table_index.MJSS
133 local capsule_glyph_math = ltjw.capsule_glyph_math
134 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
135 local setfont = node.direct.setfont
136 local setchar = node.direct.setchar
138 cjh_A = function (p, sty)
139 if not p then return nil
142 if pid == id_sub_mlist then
144 setlist(p, conv_jchar_to_hbox(getlist(p), sty))
146 elseif pid == id_mchar then
147 local pc, fam = getchar (p), get_attr(p, attr_jfam) or -1
148 if (not is_math_letters[pc]) and is_ucs_in_japanese_char(p) and fam>=0 then
149 local f = ltjs.get_stack_table(MJT + 0x100 * sty + fam, -1, getcount(cnt_stack))
151 local q = node_new(id_sub_box)
152 local r = node_new(id_glyph, 256); setnext(r, nil)
154 local k = get_attr(r,attr_ykblshift) or 0; set_attr(r, attr_ykblshift, 0)
155 -- ltj-setwidth 内で実際の位置補正はおこなうので,補正量を退避
156 local met = ltjf_font_metric_table[f]
157 r = capsule_glyph_math(r, met, met.char_type[ltjf_find_char_class(pc, met)]);
158 setlist(q, r); node_free(p); p=q; set_attr(r, attr_yablshift, k)
161 elseif pid == id_sub_box and getlist(p) then
162 -- \hbox で直に与えられた内容は上下位置を補正する必要はない
163 local h = getlist(p); h = ltjd_make_dir_whatsit(h, h, list_dir, 'math')
164 setlist(p, h); set_attr(h, attr_icflag, PROCESSED)
171 local function mlist_callback_ltja(n)
172 local n = to_direct(n); list_dir = ltjd_get_dir_count()
173 if getid(n)==id_whatsit and getsubtype(n)==sid_user and getfield(n, 'user_id') == DIR then
174 local old_n = n; n = node_remove(n, n)
175 node_free(old_n); if not n then return nil end
177 return to_node(conv_jchar_to_hbox(n, 0))
179 -- LaTeX 2020-02-02 seems to have pre_mlist_to_hlist_filter callback
180 if luatexbase.callbacktypes['pre_mlist_to_hlist_filter'] then
181 luatexbase.add_to_callback('pre_mlist_to_hlist_filter',
182 mlist_callback_ltja, 'ltj.mlist_to_hlist_pre', 1)
184 local mlist_to_hlist = node.mlist_to_hlist
185 luatexbase.add_to_callback('mlist_to_hlist',
186 function (n, display_type, penalties)
187 return mlist_to_hlist(mlist_callback_ltja(n),display_type, penalties)
188 end,'ltj.mlist_to_hlist', 1)
192 luatexja.math = { is_math_letters = is_math_letters }