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 getshift = node.direct.getshift
22 local setnext = node.direct.setnext
23 local setnucleus = node.direct.setnucleus
24 local setsup = node.direct.setsup
25 local setsub = node.direct.setsub
26 local setlist = node.direct.setlist
27 local setshift = node.direct.setshift
29 local to_node = node.direct.tonode
30 local to_direct = node.direct.todirect
32 local node_traverse = node.direct.traverse
33 local node_new = node.direct.new
34 local node_next = node.direct.getnext
35 local node_remove = node.direct.remove
36 local node_free = node.direct.flush_node or node.direct.free
37 local get_attr = node.direct.get_attribute
38 local set_attr = node.direct.set_attribute
39 local getcount = tex.getcount
40 local cnt_stack = luatexbase.registernumber 'ltj@@stack'
42 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
43 local attr_dir = luatexbase.attributes['ltj@dir']
44 local attr_icflag = luatexbase.attributes['ltj@icflag']
45 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
46 local attr_jfam = luatexbase.attributes['jfam']
47 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
49 local id_glyph = node.id 'glyph'
50 local id_hlist = node.id 'hlist'
51 local id_vlist = node.id 'vlist'
52 local id_mchar = node.id 'math_char'
53 local id_sub_box = node.id 'sub_box'
54 local id_radical = node.id 'radical'
55 local id_choice = node.id 'choice'
56 local id_accent = node.id 'accent'
57 local id_style = node.id 'style'
58 local id_frac = node.id 'fraction'
59 local id_simple = node.id 'noad'
60 local id_sub_mlist = node.id 'sub_mlist'
61 local id_whatsit = node.id 'whatsit'
62 local sid_user = node.subtype 'user_defined'
63 local DIR = luatexja.userid_table.DIR
64 local dir_node_auto = luatexja.dir_table.dir_node_auto
66 local PROCESSED = luatexja.icflag_table.PROCESSED
68 local ltjf_font_metric_table = ltjf.font_metric_table
69 local ltjf_find_char_class = ltjf.find_char_class
70 local ltjd_get_dir_count = ltjd.get_dir_count
71 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
73 -- table of mathematical characters
74 local is_math_letters = {}
77 -- vcenter noad は軸に揃えるため,欧文ベースライン補正がかかる
78 local function conv_vcenter(sb)
79 local h = getlist(sb) ; local hd = getlist(h)
80 if getid(hd)==id_whatsit and getsubtype(hd)==sid_user
81 and getfield(hd, 'user_id')==DIR then
82 local d = node_next(hd)
83 if getid(d)==id_vlist and get_attr(d, attr_dir)>=dir_node_auto then
84 node_free(hd); setlist(h, nil); node_free(h)
85 setlist(sb, d); set_attr(d, attr_icflag, 0)
92 local max, min = math.max, math.min
93 -- sty : -1 (display), 0 (text), 1 (script), >=2 (scriptscript)
94 local function conv_jchar_to_hbox(head, sty)
95 for p in node_traverse(head) do
97 if pid == id_simple or pid == id_accent then
98 if getsubtype(p)==12 then
99 conv_vcenter(getnucleus(p))
101 setnucleus(p, cjh_A(getnucleus(p), sty))
103 setsub(p, cjh_A(getsub(p), max(sty+1,1)))
104 setsup(p, cjh_A(getsup(p), max(sty+1,1)))
105 elseif pid == id_choice then
106 setfield(p, 'display', cjh_A(getfield(p, 'display'), -1))
107 setfield(p, 'text', cjh_A(getfield(p, 'text'), 0))
108 setfield(p, 'script', cjh_A(getfield(p, 'script'), 1))
109 setfield(p, 'scriptscript', cjh_A(getfield(p, 'scriptscript'), 2))
110 elseif pid == id_frac then
111 setfield(p, 'num', cjh_A(getfield(p, 'num'), sty+1))
112 setfield(p, 'denom', cjh_A(getfield(p, 'denom'), sty+1))
113 elseif pid == id_radical then
114 setnucleus(p, cjh_A(getnucleus(p), sty))
115 setsub(p, cjh_A(getsub(p), max(sty+1,1)))
116 setsup(p, cjh_A(getsup(p), max(sty+1,1)))
117 if getfield(p, 'degree') then
118 setfield(p, 'degree', cjh_A(getfield(p, 'degree'), 2))
120 elseif pid == id_style then
121 local ps = getfield(p, 'style')
122 if ps == "display'" or ps == 'display' then
124 elseif ps == "text'" or ps == 'text' then
126 elseif ps == "script'" or ps == 'script' then
135 local MJT = luatexja.stack_table_index.MJT
136 local MJS = luatexja.stack_table_index.MJS
137 local MJSS = luatexja.stack_table_index.MJSS
138 local capsule_glyph_math = ltjw.capsule_glyph_math
139 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
140 local setfont = node.direct.setfont
141 local setchar = node.direct.setchar
143 cjh_A = function (p, sty)
144 if not p then return nil
147 if pid == id_sub_mlist then
149 setlist(p, conv_jchar_to_hbox(getlist(p), sty))
151 elseif pid == id_mchar then
152 local pc, fam = getchar (p), get_attr(p, attr_jfam) or -1
153 if (not is_math_letters[pc]) and is_ucs_in_japanese_char(p) and fam>=0 then
154 local f = ltjs.get_stack_table(MJT + 0x100 * min(max(sty,0),2) + fam, -1, getcount(cnt_stack))
156 local q = node_new(id_sub_box)
157 local r = node_new(id_glyph, 256); setnext(r, nil); setfont(r, f, pc)
158 local met = ltjf_font_metric_table[f]
159 r = capsule_glyph_math(
160 r, met, met.char_type[ltjf_find_char_class(pc, met)], sty)
161 setlist(q, r); node_free(p); p=q;
164 elseif pid == id_sub_box and getlist(p) then
165 -- \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
166 local h = getlist(p); h = ltjd_make_dir_whatsit(h, h, list_dir, 'math')
167 setlist(p, h); setshift(h, getshift(h)-get_attr(h, attr_yablshift))
168 --set_attr(h, attr_icflag, PROCESSED)
175 local function mlist_callback_ltja(n, display_type)
176 local n = to_direct(n); list_dir = ltjd_get_dir_count()
177 if getid(n)==id_whatsit and getsubtype(n)==sid_user and getfield(n, 'user_id') == DIR then
178 local old_n = n; n = node_remove(n, n)
179 node_free(old_n); if not n then return nil end
181 return to_node(conv_jchar_to_hbox(n, (display_type=='display') and -1 or 0))
183 -- LaTeX 2020-02-02 seems to have pre_mlist_to_hlist_filter callback
184 if luatexbase.callbacktypes['pre_mlist_to_hlist_filter'] then
185 luatexbase.add_to_callback('pre_mlist_to_hlist_filter',
186 mlist_callback_ltja, 'ltj.mlist_to_hlist_pre', 1)
188 local mlist_to_hlist = node.mlist_to_hlist
189 luatexbase.add_to_callback('mlist_to_hlist',
190 function (n, display_type, penalties)
191 return mlist_to_hlist(mlist_callback_ltja(n),display_type, penalties)
192 end,'ltj.mlist_to_hlist', 1)
196 luatexja.math = { is_math_letters = is_math_letters }