--
--- luatexja/math.lua
+-- luatexja/ltj-math.lua
--
-luatexbase.provides_module({
- name = 'luatexja.math',
- date = '2011/08/14',
- version = '0.1',
- description = 'Handling routines for Japanese characters in math mode',
-})
-module('luatexja.math', package.seeall)
-require('luatexja.base'); local ltjb = luatexja.base
-require('luatexja.charrange'); local ltjc = luatexja.charrange
-require('luatexja.jfont'); local ltjf = luatexja.jfont
-require('luatexja.stack'); local ltjs = luatexja.stack
-require('luatexja.setwidth'); local ltjw = luatexja.setwidth
+luatexja.load_module('base'); local ltjb = luatexja.base
+luatexja.load_module('charrange'); local ltjc = luatexja.charrange
+luatexja.load_module('jfont'); local ltjf = luatexja.jfont
+luatexja.load_module('stack'); local ltjs = luatexja.stack
+luatexja.load_module('setwidth'); local ltjw = luatexja.setwidth
local node_new = node.new
local node_next = node.next
local node_free = node.free
local has_attr = node.has_attribute
local set_attr = node.set_attribute
+local tex_getcount = tex.getcount
local attr_jchar_class = luatexbase.attributes['ltj@charclass']
local attr_icflag = luatexbase.attributes['ltj@icflag']
local id_simple = node.id('noad')
local id_sub_mlist = node.id('sub_mlist')
-local PROCESSED = 8
+local PROCESSED = luatexja.icflag_table.PROCESSED
local ltjf_font_metric_table = ltjf.font_metric_table
local ltjf_find_char_class = ltjf.find_char_class
-- table of mathematical characters
-is_math_letters = {}
+local is_math_letters = {}
local conv_jchar_to_hbox_A
return head
end
+local MJT = luatexja.stack_table_index.MJT
+local MJS = luatexja.stack_table_index.MJS
+local MJSS = luatexja.stack_table_index.MJSS
+
conv_jchar_to_hbox_A =
function (p, sty)
if not p then return nil
- elseif p.id == id_sub_mlist then
- if p.head then
- p.head = conv_jchar_to_hbox(p.head, sty)
- end
- elseif p.id == id_mchar then
- local fam = has_attr(p, attr_jfam) or -1
- if (not is_math_letters[p.char]) and ltjc.is_ucs_in_japanese_char(p) and fam>=0 then
- local mode = 'mjss'
- if sty == 0 then mode = 'mjtext'
- elseif sty == 1 then mode = 'mjscr'
- end
- local f = ltjs.get_penalty_table(mode, fam, -1, tex.getcount('ltj@@stack'))
- if f ~= -1 then
- local q = node_new(id_sub_box)
- local r = node_new(id_glyph); r.next = nil
- r.char = p.char; r.font = f; r.subtype = 256
- set_attr(r, attr_icflag, PROCESSED)
- set_attr(r, attr_yablshift, 0)
- local met = ltjf_font_metric_table[f]
- local class = ltjf_find_char_class(p.char, met)
- set_attr(r, attr_jchar_class, class)
- ltjw.char_data = ltjf.metrics[met.jfm].size_cache[met.size].char_type[class]
- ltjw.head = r; ltjw.capsule_glyph(r, tex.mathdir , true, met, class);
- q.head = ltjw.head; node_free(p); p=q;
- end
+ else
+ local pid = p.id
+ if pid == id_sub_mlist then
+ if p.head then
+ p.head = conv_jchar_to_hbox(p.head, sty)
+ end
+ elseif pid == id_mchar then
+ local fam = has_attr(p, attr_jfam) or -1
+ if (not is_math_letters[p.char]) and ltjc.is_ucs_in_japanese_char(p) and fam>=0 then
+ local f = ltjs.get_penalty_table(MJT + 0x100 * sty + fam, -1, tex_getcount('ltj@@stack'))
+ if f ~= -1 then
+ local q = node_new(id_sub_box)
+ local r = node_new(id_glyph); r.next = nil
+ r.char = p.char; r.font = f; r.subtype = 256
+ local k = has_attr(r,attr_ykblshift) or 0
+ set_attr(r, attr_ykblshift, 0)
+ -- ltj-setwidth 内で実際の位置補正はおこなうので，補正量を退避
+ ltjw.head = r;
+ local met = ltjf_font_metric_table[f]
+ ltjw.capsule_glyph(r, tex.mathdir , true, met, ltjf_find_char_class(p.char, met));
+ q.head = ltjw.head; node_free(p); p=q;
+ set_attr(q.head, attr_yablshift, k)
+ end
+ end
+ elseif pid == id_sub_box and p.head then
+ -- \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
+ set_attr(p.head, attr_icflag, PROCESSED)
end
end
return p
head = node.mlist_to_hlist(head, display_type, penalties)
return head
end,'ltj.mlist_to_hlist', 1)
+
+luatexja.math = { is_math_letters = is_math_letters }
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