Dnode -> node.direct (WIP)

[luatex-ja/luatexja.git] / src / ltj-math.lua

diff --git a/src/ltj-math.lua b/src/ltj-math.lua
index 509d0be..abb50ec 100644 (file)
--- a/src/ltj-math.lua
+++ b/src/ltj-math.lua
@@ -9,25 +9,24 @@ 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 Dnode = node.direct or node
-
-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 getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
+local setfield = node.direct.setfield
+local getfield = node.direct.getfield
+local getid = node.direct.getid
+local getsubtype = node.direct.getsubtype
+local getlist = node.direct.getlist
 -- getlist cannot be used for sub_box nodes. Use instead λp. getfield(p, 'head')
-local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
-
-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 node_traverse = Dnode.traverse
-local node_new = Dnode.new
-local node_next = (Dnode ~= node) and Dnode.getnext or node.next
-local node_free = Dnode.free
-local has_attr = Dnode.has_attribute
-local set_attr = Dnode.set_attribute
+local getchar = node.direct.getchar
+
+local to_node = node.direct.tonode
+local to_direct = node.direct.todirect
+
+local node_traverse = node.direct.traverse
+local node_new = node.direct.new
+local node_next = node.direct.getnext
+local node_remove = node.direct.remove
+local node_free = node.direct.free
+local has_attr = node.direct.has_attribute
+local set_attr = node.direct.set_attribute
 local tex_getcount = tex.getcount
 
 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
@@ -52,6 +51,7 @@ local id_sub_mlist = node.id('sub_mlist')
 local id_whatsit = node.id('whatsit')
 local sid_user = node.subtype('user_defined')
 local DIR  = luatexja.userid_table.DIR
+local dir_node_auto   = luatexja.dir_table.dir_node_auto
 
 local PROCESSED  = luatexja.icflag_table.PROCESSED
 
@@ -62,6 +62,21 @@ local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
 
 -- table of mathematical characters
 local is_math_letters = {}
+local list_dir
+
+local function conv_vcenter(sb)
+   local h = getfield(sb, 'head');local hd = getlist(h)
+   if getid(hd)==id_whatsit and 
+   getsubtype(hd)==sid_user and getfield(hd, 'user_id')==DIR then
+      local d = node_next(hd)
+      if getid(d)==id_vlist and has_attr(d, attr_dir)>=dir_node_auto then
+        node_free(hd); setfield(h, 'head', nil); node_free(h)
+        setfield(sb, 'head', d); h = d
+      end
+   end
+   set_attr(h, attr_icflag, PROCESSED)
+   return sb
+end
 
 local conv_jchar_to_hbox_A
 
@@ -70,7 +85,11 @@ local function conv_jchar_to_hbox(head, sty)
    for p in node_traverse(head) do
       local pid = getid(p)
       if pid == id_simple or pid == id_accent then
-        setfield(p, 'nucleus', conv_jchar_to_hbox_A(getfield(p, 'nucleus'), sty))
+        if getsubtype(p)==12 then
+           conv_vcenter(getfield(p, 'nucleus'))
+        else
+           setfield(p, 'nucleus', conv_jchar_to_hbox_A(getfield(p, 'nucleus'), sty))
+        end
         setfield(p, 'sub', conv_jchar_to_hbox_A(getfield(p, 'sub'), sty+1))
         setfield(p, 'sup', conv_jchar_to_hbox_A(getfield(p, 'sup'), sty+1))
       elseif pid == id_choice then
@@ -107,7 +126,6 @@ local MJS  = luatexja.stack_table_index.MJS
 local MJSS = luatexja.stack_table_index.MJSS
 local capsule_glyph_math = ltjw.capsule_glyph_math
 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
-local list_dir
 
 conv_jchar_to_hbox_A =
 function (p, sty)
@@ -131,7 +149,7 @@ function (p, sty)
                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
                local met = ltjf_font_metric_table[f]
-               r = capsule_glyph_math(r, met, ltjf_find_char_class(pc, met));
+               r = capsule_glyph_math(r, met, met.char_type[ltjf_find_char_class(pc, met)]);
                setfield(q, 'head', r); node_free(p); p=q;
                set_attr(r, attr_yablshift, k)
             end
@@ -147,7 +165,6 @@ function (p, sty)
    return p
 end
 
-local node_remove = Dnode.remove
 luatexbase.add_to_callback('mlist_to_hlist',
    function (n, display_type, penalties)
       n = to_direct(n); list_dir = ltjd_get_dir_count()