From: Hironori Kitagawa <h_kitagawa2001@yahoo.co.jp>
Date: Mon, 22 Aug 2022 08:07:41 +0000 (+0900)
Subject: change the argument of getcount to the register number
X-Git-Tag: 20221002.0~9^2~7
X-Git-Url: http://git.osdn.jp/view?a=commitdiff_plain;h=d68e277016a9797b6d7838fee38085d1aa1a4277;p=luatex-ja%2Fluatexja.git

change the argument of getcount to the register number
---

diff --git a/src/ltj-adjust.lua b/src/ltj-adjust.lua
index 8d767bf..af5c5ca 100644
--- a/src/ltj-adjust.lua
+++ b/src/ltj-adjust.lua
@@ -501,28 +501,26 @@ luatexja.unary_pars.profile_hgap_factor = function(t)
    return luatexja.adjust.profile_hgap_factor
 end
 do
-  local insert = table.insert
+  local insert, texget = table.insert, tex.get
   local rangedimensions, max = node.direct.rangedimensions, math.max
   local function profile_inner(box, range, ind, vmirrored, adj)
     local w_acc, d_before = getshift(box), 0
     local x = getlist(box); local xn = node_next(x)
     while x do
       local w, h, d
-      if xn then w, h, d= rangedimensions(box,x,xn)
-      else w, h, d= rangedimensions(box,x) end
+      if xn then w, h, d = rangedimensions(box,x,xn)
+      else w, h, d = rangedimensions(box,x) end
       if vmirrored then h=d end
       local w_new = w_acc + w
-      if w>=0 then
-        range:insert(ind, h, w_acc-adj, w_new)
-      else
-        range:insert(ind, h, w_new-adj, w_acc)
+      if w>=0 then range:insert(ind, h, w_acc-adj, w_new)
+      else range:insert(ind, h, w_new-adj, w_acc)
       end
       w_acc = w_new; x = xn; if x then xn = node_next(x) end
     end
   end
   function ltjl.p_profile(before, after, mirrored, bw)
     local range, tls
-      = init_range(), luatexja.adjust.profile_hgap_factor*tex.get('lineskip', false)
+      = init_range(), luatexja.adjust.profile_hgap_factor*texget('lineskip', false)
     profile_inner(before, range, 3, true,     tls)
     profile_inner(after,  range, 4, mirrored, tls)
     range = range:flatten()
@@ -544,7 +542,7 @@ end
 
 do
   local ltja = luatexja.adjust
-  local copy_glue = ltjl.copy_glue
+  local copy_glue, texget = ltjl.copy_glue, tex.get
   local floor, max = math.floor, math.max
   function ltjl.l_step(dist, g, adj, normal, bw, loc)
     if loc=='alignment' then
@@ -552,7 +550,7 @@ do
     end
     if dist < tex.lineskiplimit then
     local f = max(1, bw*ltja.step_factor)
-       copy_glue(g, 'baselineskip', 1, normal - f * floor((dist-tex.get('lineskip', false))/f))
+       copy_glue(g, 'baselineskip', 1, normal - f * floor((dist-texget('lineskip', false))/f))
     else
        copy_glue(g, 'baselineskip', 2, normal)
     end
diff --git a/src/ltj-charrange.lua b/src/ltj-charrange.lua
index 074ba3c..b5207ce 100644
--- a/src/ltj-charrange.lua
+++ b/src/ltj-charrange.lua
@@ -32,7 +32,7 @@ do
    end
 end
 for i = 31, 31*ATTR_RANGE-1 do
-   local ka, pw = luatexbase.attributes['ltj@kcat'..floor(i/31)], 2^(i%31)
+   local ka, pw = luatexbase.attributes['ltj@kcat'..(i//31)], 2^(i%31)
    kcat_attr_table[i], pow_table[i] = ka, pw
    fn_table[i] = function(p) return (get_attr(p, ka) or 0)&pw==0 end
    nfn_table[i] = function(p) return (get_attr_node(p, ka) or 0)&pw==0 end
diff --git a/src/ltj-compat.lua b/src/ltj-compat.lua
index c1ca005..25c9b88 100644
--- a/src/ltj-compat.lua
+++ b/src/ltj-compat.lua
@@ -4,7 +4,6 @@
 
 luatexja.load_module 'base';   local ltjb = luatexja.base
 luatexja.load_module 'stack';  local ltjs = luatexja.stack
-local stack_table_index = luatexja.stack_table_index
 
 -- load jisx0208 table
 local cache_ver = 3
@@ -18,20 +17,21 @@ end
 
 
 -- \kuten, \jis, \euc, \sjis, \ucs, \kansuji
-local utfchar=utf.char
+local utfchar, floor = utf.char, math.floor
+local texwrite, getcount = tex.write, tex.getcount
+local cnt_stack = luatexbase.registernumber 'ltj@@stack'
+local KSJ = luatexja.stack_table_index.KSJ
+local get_stack_table = ltjs.get_stack_table
 local function to_kansuji(num)
    if not num then num=0; return
-   elseif num<0 then
-      num = -num; tex.write '-'
+   elseif num<0 then num = -num; texwrite '-' 
    end
    local s = ""
    repeat
-      s = utfchar(
-         ltjs.get_stack_table(luatexja.stack_table_index.KSJ + num%10,
-                                '', tex.getcount 'ltj@@stack')) .. s
-      num=math.floor(num/10)
+      s = utfchar(get_stack_table(KSJ + num%10, '', getcount(cnt_stack))) .. s
+      num=num//10
    until num==0
-   tex.write(s)
+   texwrite(s)
 end
 
 local function error_invalid_charcode(i)
@@ -43,16 +43,16 @@ end
 -- \ucs: 単なる identity
 local function from_ucs(i)
    if type(i)~='number' then error_invalid_charcode(i); i=0 end
-   tex.write(i)
+   texwrite(i)
 end
 
 -- \kuten: 面区点 （それぞれで16進2桁を使用）=> Unicode 符号位置
 local function from_kuten(i)
    if type(i)~='number' then error_invalid_charcode(i); i=0 end
    if (i%256==0)or(i%256>94) then
-     tex.write '0'
+     texwrite '0'
    else
-     tex.write(tostring(jisx0208.table_jisx0208_uptex[math.floor(i/256)*94+(i%256)-94] or 0))
+     texwrite(tostring(jisx0208.table_jisx0208_uptex[(i//256)*94+(i%256)-94] or 0))
    end
 end
 
@@ -75,10 +75,9 @@ end
 -- \sjis: Shift_JIS による符号位置 => Unicode 符号位置
 local function from_sjis(i)
    if (type(i)~='number') or i>=0x10000 or i<0 then
-      error_invalid_charcode(i); tex.write '0'; return
+      error_invalid_charcode(i); texwrite '0'; return
    end
-   local c2 = math.floor(i/256)
-   local c1 = i%256
+   local c2, c1 = i//256, i%256
    local shift_jisx0213_s1a3_table = {
       { [false]= 1, [true]= 8},
       { [false]= 3, [true]= 4},
@@ -113,7 +112,7 @@ luatexja.binary_pars.kansujichar = function(c, t)
                         'So I changed this one to zero.')
       c=0
    end
-   return ltjs.get_stack_table(stack_table_index.KSJ + c, 0, t)
+   return get_stack_table(KSJ + c, 0, t)
 end
 
 
diff --git a/src/ltj-direction.lua b/src/ltj-direction.lua
index 2fa74d6..1a7364a 100644
--- a/src/ltj-direction.lua
+++ b/src/ltj-direction.lua
@@ -46,7 +46,7 @@ local sid_user   = node.subtype 'user_defined'
 
 local getnest = tex.getnest
 local tex_nest = tex.nest
-local tex_getcount = tex.getcount
+local getcount = tex.getcount
 local ensure_tex_attr = ltjb.ensure_tex_attr
 local PROCESSED    = luatexja.icflag_table.PROCESSED
 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
@@ -545,12 +545,13 @@ function get_box_dir(b, default)
 end
 
 do
+   local ltj_tempcnta = luatexbase.registernumber 'ltj@tempcnta'
    local getbox = tex.getbox
    local dir_backup
    function luatexja.direction.unbox_check_dir(is_copy)
       start_time_measure 'box_primitive_hook'
       local list_dir = get_dir_count()%dir_math_mod
-      local b = getbox(tex_getcount 'ltj@tempcnta')
+      local b = getbox(getcount(ltj_tempcnta))
       if b and getlist(to_direct(b)) then
          local box_dir = get_box_dir(to_direct(b), dir_yoko)
          if box_dir%dir_math_mod ~= list_dir then
@@ -587,7 +588,7 @@ do
       stop_time_measure 'box_primitive_hook'
    end
    function luatexja.direction.uncopy_restore_whatsit()
-      local b = getbox(tex_getcount 'ltj@tempcnta')
+      local b = getbox(getcount(ltj_tempcnta))
       if b then
          local bd = to_direct(b)
          if dir_backup then
diff --git a/src/ltj-inputbuf.lua b/src/ltj-inputbuf.lua
index 12ac83a..dc6ec46 100644
--- a/src/ltj-inputbuf.lua
+++ b/src/ltj-inputbuf.lua
@@ -11,7 +11,7 @@ local utfchar = utf.char
 local id_glyph = node.id 'glyph'
 local getcatcode, getcount = tex.getcatcode, tex.getcount
 local ltjc_is_japanese_char_curlist = ltjc.is_japanese_char_curlist
-
+local cnt_lineend = luatexbase.registernumber 'ltjlineendcomment'
 local substituter
 do
     local uchar = utf.char
@@ -69,7 +69,7 @@ local function add_comment(buffer)
          if (te ~= -1) and (getcatcode(te)==5) then
             local ct = getcatcode(c)
             if (ct==11) or (ct==12) then
-               local lec = getcount 'ltjlineendcomment'
+               local lec = getcount(cnt_lineend)
                -- Is the catcode of \ltjlineendcomment (new comment char) is 14 (comment)?
                if ltjc_is_japanese_char_curlist(c) and (getcatcode(lec)==14) then
                   stop_time_measure 'inputbuf'; return buffer .. utfchar(lec)
diff --git a/src/ltj-jfmglue.lua b/src/ltj-jfmglue.lua
index 515e823..822154e 100644
--- a/src/ltj-jfmglue.lua
+++ b/src/ltj-jfmglue.lua
@@ -1384,6 +1384,7 @@ do
    local getnest = tex.getnest
    local tex_getattr = tex.getattribute
    local get_current_jfont
+   local cnt_stack = luatexbase.registernumber 'ltj@@stack'
    do
        local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
        local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
@@ -1401,9 +1402,9 @@ do
    local function insert_k_skip_common(ind, name, ica, icb)
        if abs(getnest().mode) ~= ltjs.hmode then return end
        local g = node_new(id_glue); set_attr(g, attr_icflag, SPECIAL_JAGLUE)
-       local is_late = scan_keyword("late")
+       local is_late = scan_keyword 'late'
        if not is_late then
-           local st = get_stack_skip(ind, getcount('ltj@@stack'))
+           local st = get_stack_skip(ind, getcount(cnt_stack))
            if st[1]==1073741823 then
                local bk = ltjf_font_metric_table[get_current_jfont()][name]
                if bk then
diff --git a/src/ltj-math.lua b/src/ltj-math.lua
index bb3e414..451c7d0 100644
--- a/src/ltj-math.lua
+++ b/src/ltj-math.lua
@@ -34,7 +34,8 @@ local node_remove = node.direct.remove
 local node_free = node.direct.flush_node or node.direct.free
 local get_attr = node.direct.get_attribute
 local set_attr = node.direct.set_attribute
-local tex_getcount = tex.getcount
+local getcount = tex.getcount
+local cnt_stack = luatexbase.registernumber 'ltj@@stack'
 
 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
 local attr_dir = luatexbase.attributes['ltj@dir']
@@ -145,7 +146,7 @@ cjh_A = function (p, sty)
       elseif pid == id_mchar then
          local pc, fam = getchar (p), get_attr(p, attr_jfam) or -1
          if (not is_math_letters[pc]) and is_ucs_in_japanese_char(p) and fam>=0 then
-            local f = ltjs.get_stack_table(MJT + 0x100 * sty + fam, -1, tex_getcount('ltj@@stack'))
+            local f = ltjs.get_stack_table(MJT + 0x100 * sty + fam, -1, getcount(cnt_stack))
             if f ~= -1 then
                local q = node_new(id_sub_box)
                local r = node_new(id_glyph, 256); setnext(r, nil)
diff --git a/src/ltj-pretreat.lua b/src/ltj-pretreat.lua
index 9325628..23ca192 100644
--- a/src/ltj-pretreat.lua
+++ b/src/ltj-pretreat.lua
@@ -29,7 +29,7 @@ local node_remove = node.direct.remove
 local node_next =  node.direct.getnext
 local node_free = node.direct.flush_node or node.direct.free
 local node_end_of_math = node.direct.end_of_math
-local tex_getcount = tex.getcount
+local getcount = tex.getcount
 
 local id_glyph = node.id('glyph')
 local id_math = node.id('math')
@@ -142,6 +142,7 @@ local ltjs_report_stack_level = ltjs.report_stack_level
 local ltjf_font_metric_table  = ltjf.font_metric_table
 local font_getfont = font.getfont
 local traverse_id = node.direct.traverse_id
+local cnt_stack = luatexbase.registernumber 'ltj@@stack'
 function set_box_stack_level(head, mode)
    local box_set, cl = 0, tex.currentgrouplevel + 1
    if mode then
@@ -151,7 +152,7 @@ function set_box_stack_level(head, mode)
    else
       for _,p  in pairs(wt) do node_free(p) end
    end
-   ltjs_report_stack_level(tex_getcount('ltj@@stack') + box_set)
+   ltjs_report_stack_level(getcount(cnt_stack) + box_set)
    for _,p  in pairs(wtd) do node_free(p) end
    if ltjs.list_dir == dir_tate then
       for p in traverse_id(id_glyph,to_direct(head)) do
diff --git a/src/ltj-ruby.lua b/src/ltj-ruby.lua
index e580db1..a07f63a 100644
--- a/src/ltj-ruby.lua
+++ b/src/ltj-ruby.lua
@@ -195,9 +195,7 @@ end
 
 local function expand_3bits(num)
    local t = {}; local a = num
-   for i = 1, 10 do
-      t[i] = a%8; a = floor(a/8)
-   end
+   for i = 1, 10 do t[i], a = a%8, a//8 end
    return t
 end
 ----------------------------------------------------------------
@@ -267,7 +265,7 @@ local function texiface_low(rst, rtlr, rtlp)
    local wv = node_new(id_whatsit, sid_user)
    setfield(w, 'value', to_node(wv))
    setfield(wv, 'type', 108)
-   setfield(wv, 'value', rst); rst.count = floor(#rtlr)
+   setfield(wv, 'value', rst); rst.count = #rtlr
    setfield(wv, 'user_id', RUBY_PRE) -- dummy
    local n = wv
    for i = 1, #rtlr do
@@ -319,7 +317,7 @@ local function enlarge_parent(r, p, tmp_tbl, no_begin, no_end)
    local pre_intrusion, post_intrusion
    local ppre, pmid, ppost = tmp_tbl.ppre, tmp_tbl.pmid, tmp_tbl.ppost
    local mapre, mapost = tmp_tbl.mapre, tmp_tbl.mapost
-   local intmode = floor(tmp_tbl.mode/4)%4
+   local intmode = (tmp_tbl.mode//4)%4
    if no_begin then mapre  = mapre + tmp_tbl.before_jfmgk end
    if no_end   then mapost = mapost + tmp_tbl.after_jfmgk end
    if (tmp_tbl.mode%4 >=2) and (tmp_tbl.pre<0) and (tmp_tbl.post<0) then
@@ -342,7 +340,7 @@ local function enlarge_parent(r, p, tmp_tbl, no_begin, no_end)
       if n < sumprot then
          pre_intrusion = n/2; post_intrusion = n/2
       else
-         pre_intrusion = floor(sumprot/2); post_intrusion = sumprot - pre_intrusion
+         pre_intrusion = sumprot//2; post_intrusion = sumprot - pre_intrusion
       end
       p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
       pre_intrusion = min(mapre, pre_intrusion + round(ppre*getfield(p, 'glue_set')*65536))
@@ -375,8 +373,8 @@ local function new_ruby_box(r, p, tmp_tbl, no_begin, no_end)
    local ppre, pmid, ppost = tmp_tbl.ppre, tmp_tbl.pmid, tmp_tbl.ppost
    local mapre, mapost = tmp_tbl.mapre, tmp_tbl.mapost
    local rpre, rmid, rpost, rsmash
-   imode = floor(tmp_tbl.mode/0x100000); rsmash = (imode%2 ==1)
-   imode = floor(imode/2); rpost = imode%8;
+   imode = tmp_tbl.mode//0x100000; rsmash = (imode%2 ==1)
+   imode = imode//2; rpost = imode%8;
    imode = (imode-rpost)/8;  rmid  = imode%8;
    imode = (imode-rmid)/8;   rpre  = imode%8
    if getwidth(r) > getwidth(p) then  -- change the width of p
@@ -426,7 +424,7 @@ end
 local post_intrusion_backup, post_jfmgk_backup
 local max_allow_pre, max_allow_post
 
-
+local flush_list = node.direct.flush_list
 -- 中付き熟語ルビ，cmp containers
 -- 「文字の構成を考えた」やつはどうしよう
 local function pre_low_cal_box(w, cmp)
@@ -481,7 +479,7 @@ local function pre_low_cal_box(w, cmp)
 
    -- w.value の node list 更新．
    local nt = wv
-   node.direct.flush_list(node_next(wv))
+   flush_list(node_next(wv))
    for i = 1, 2*cmp+1 do setnext(nt, kf[i]); nt = kf[i]  end
 
    if cmp==1 then     solve_1(coef)
@@ -635,11 +633,12 @@ do
    end
 end
 
+local traverse_id = node.direct.traverse_id
 local function post_high_break(head)
    local rs = {}   -- rs: sequence of ruby_nodes,
    local rw = nil  -- rw: main whatsit
    local cmp = -2  -- dummy
-   for h in node.direct.traverse_id(id_hlist, to_direct(head)) do
+   for h in traverse_id(id_hlist, to_direct(head)) do
       for i = 1, #rs do rs[i] = nil end
       local ha = getlist(h)
       while ha do
diff --git a/src/ltj-stack.lua b/src/ltj-stack.lua
index e25dbc0..ca83781 100644
--- a/src/ltj-stack.lua
+++ b/src/ltj-stack.lua
@@ -21,6 +21,8 @@ local fastcopy = table.fastcopy
 local setcount, getcount = tex.setcount, tex.getcount
 local scan_int, scan_keyword = token.scan_int, token.scan_keyword
 local getnest = tex.getnest
+local cnt_stack = luatexbase.registernumber 'ltj@@stack'
+local cnt_grplvl = luatexbase.registernumber 'ltj@@group@level'
 ltjs.hmode = 0 -- dummy
 
 local charprop_stack_table={}
@@ -28,19 +30,19 @@ ltjs.charprop_stack_table = charprop_stack_table
 charprop_stack_table[0]={}
 
 local function get_stack_level()
-   local i = getcount 'ltj@@stack'
+   local i = getcount(cnt_stack)
    local j = tex.currentgrouplevel
-   if j > getcount 'ltj@@group@level' then
+   if j > getcount(cnt_grplvl) then
       i = i+1 -- new stack level
       local gd = tex.globaldefs
       if gd~=0 then tex.globaldefs = 0 end
       --  'tex.globaldefs = 0' is local even if \globaldefs > 0.
-      setcount('ltj@@group@level', j)
+      setcount(cnt_grplvl, j)
       for k,v in pairs(charprop_stack_table) do -- clear the stack above i
          if k>=i then charprop_stack_table[k]=nil end
       end
       charprop_stack_table[i] = fastcopy(charprop_stack_table[i-1])
-      setcount('ltj@@stack', i)
+      setcount(cnt_stack, i)
       if gd~=0 then tex.globaldefs = gd end
       if getnest().mode == -ltjs.hmode then -- rest. hmode のみ
          local g = node_new(id_whatsit, sid_user)
diff --git a/src/ltjsarticle.cls b/src/ltjsarticle.cls
index ea6dc8c..13f290d 100644
--- a/src/ltjsarticle.cls
+++ b/src/ltjsarticle.cls
@@ -38,7 +38,7 @@
 %%   Right brace   \}     Tilde         \~}
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesClass{ltjsarticle}
-  [2022/04/11 ltjsclasses ]
+  [2022/08/23 ltjsclasses ]
 \def\jsc@clsname{ltjsarticle}
 \def\Cjascale{0.924715}
 \RequirePackage{luatexja}
@@ -249,13 +249,15 @@ option, since LuaTeX does not support \string\mag\MessageBreak in pdf output}%
   \begingroup\catcode`\%=12\relax
   \directlua{
     local getdimen, mpt=tex.getdimen, tex.getdimen('jsc@mpt')/65536
+    local floor, cnt_dimen_at = math.floor, luatexbase.registernumber 'dimen@'
+    local print_scaled, sprint = luatexja.print_scaled, tex.sprint
     local t = lua.get_functions_table()
     t[\the\ltjs@@magnify@font@calc] = function()
-      tex.sprint(-2,math.floor(0.5+mpt*getdimen('dimen@')))
+      sprint(-2,floor(0.5+mpt*getdimen(cnt_dimen_at)))
     end
     function luatexja.ltjs_unmagnify_fsize(a)
-      local s = luatexja.print_scaled(math.floor(0.5+a/mpt*65536))
-      tex.sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
+      local s = print_scaled(floor(0.5+a/mpt*65536))
+      sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
     end
   }
   \endgroup
diff --git a/src/ltjsbook.cls b/src/ltjsbook.cls
index 43bedbc..43c80e6 100644
--- a/src/ltjsbook.cls
+++ b/src/ltjsbook.cls
@@ -38,7 +38,7 @@
 %%   Right brace   \}     Tilde         \~}
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesClass{ltjsbook}
-  [2022/04/11 ltjsclasses ]
+  [2022/08/23 ltjsclasses ]
 \def\jsc@clsname{ltjsbook}
 \def\Cjascale{0.924715}
 \RequirePackage{luatexja}
@@ -257,13 +257,15 @@ option, since LuaTeX does not support \string\mag\MessageBreak in pdf output}%
   \begingroup\catcode`\%=12\relax
   \directlua{
     local getdimen, mpt=tex.getdimen, tex.getdimen('jsc@mpt')/65536
+    local floor, cnt_dimen_at = math.floor, luatexbase.registernumber 'dimen@'
+    local print_scaled, sprint = luatexja.print_scaled, tex.sprint
     local t = lua.get_functions_table()
     t[\the\ltjs@@magnify@font@calc] = function()
-      tex.sprint(-2,math.floor(0.5+mpt*getdimen('dimen@')))
+      sprint(-2,floor(0.5+mpt*getdimen(cnt_dimen_at)))
     end
     function luatexja.ltjs_unmagnify_fsize(a)
-      local s = luatexja.print_scaled(math.floor(0.5+a/mpt*65536))
-      tex.sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
+      local s = print_scaled(floor(0.5+a/mpt*65536))
+      sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
     end
   }
   \endgroup
diff --git a/src/ltjsclasses.dtx b/src/ltjsclasses.dtx
index e190617..dff5001 100644
--- a/src/ltjsclasses.dtx
+++ b/src/ltjsclasses.dtx
@@ -44,7 +44,7 @@
 %<*driver>
 \ProvidesFile{ltjsclasses.dtx}
 %</driver>
-  [2022/04/11 ltjsclasses ]
+  [2022/08/23 ltjsclasses ]
 %<*driver>
 \IfFileExists{luatex85.sty}{\RequirePackage{luatex85}}{}
 \documentclass[disablejfam]{ltjsarticle}
@@ -808,13 +808,15 @@
   \begingroup\catcode`\%=12\relax
   \directlua{
     local getdimen, mpt=tex.getdimen, tex.getdimen('jsc@mpt')/65536
+    local floor, cnt_dimen_at = math.floor, luatexbase.registernumber 'dimen@'
+    local print_scaled, sprint = luatexja.print_scaled, tex.sprint
     local t = lua.get_functions_table()
     t[\the\ltjs@@magnify@font@calc] = function()
-      tex.sprint(-2,math.floor(0.5+mpt*getdimen('dimen@')))
+      sprint(-2,floor(0.5+mpt*getdimen(cnt_dimen_at)))
     end
     function luatexja.ltjs_unmagnify_fsize(a)
-      local s = luatexja.print_scaled(math.floor(0.5+a/mpt*65536))
-      tex.sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
+      local s = print_scaled(floor(0.5+a/mpt*65536))
+      sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
     end
   }
   \endgroup
diff --git a/src/ltjskiyou.cls b/src/ltjskiyou.cls
index be94fcc..20518fa 100644
--- a/src/ltjskiyou.cls
+++ b/src/ltjskiyou.cls
@@ -38,7 +38,7 @@
 %%   Right brace   \}     Tilde         \~}
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesClass{ltjskiyou}
-  [2022/04/11 ltjsclasses ]
+  [2022/08/23 ltjsclasses ]
 \def\jsc@clsname{ltjskiyou}
 \def\Cjascale{0.924715}
 \RequirePackage{luatexja}
@@ -248,13 +248,15 @@ option, since LuaTeX does not support \string\mag\MessageBreak in pdf output}%
   \begingroup\catcode`\%=12\relax
   \directlua{
     local getdimen, mpt=tex.getdimen, tex.getdimen('jsc@mpt')/65536
+    local floor, cnt_dimen_at = math.floor, luatexbase.registernumber 'dimen@'
+    local print_scaled, sprint = luatexja.print_scaled, tex.sprint
     local t = lua.get_functions_table()
     t[\the\ltjs@@magnify@font@calc] = function()
-      tex.sprint(-2,math.floor(0.5+mpt*getdimen('dimen@')))
+      sprint(-2,floor(0.5+mpt*getdimen(cnt_dimen_at)))
     end
     function luatexja.ltjs_unmagnify_fsize(a)
-      local s = luatexja.print_scaled(math.floor(0.5+a/mpt*65536))
-      tex.sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
+      local s = print_scaled(floor(0.5+a/mpt*65536))
+      sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
     end
   }
   \endgroup
diff --git a/src/ltjspf.cls b/src/ltjspf.cls
index f4f11d0..5c40308 100644
--- a/src/ltjspf.cls
+++ b/src/ltjspf.cls
@@ -38,7 +38,7 @@
 %%   Right brace   \}     Tilde         \~}
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesClass{ltjspf}
-  [2022/04/11 ltjsclasses ]
+  [2022/08/23 ltjsclasses ]
 \def\jsc@clsname{ltjspf}
 \def\Cjascale{0.903375}
 \RequirePackage{luatexja}
@@ -247,13 +247,15 @@ option, since LuaTeX does not support \string\mag\MessageBreak in pdf output}%
   \begingroup\catcode`\%=12\relax
   \directlua{
     local getdimen, mpt=tex.getdimen, tex.getdimen('jsc@mpt')/65536
+    local floor, cnt_dimen_at = math.floor, luatexbase.registernumber 'dimen@'
+    local print_scaled, sprint = luatexja.print_scaled, tex.sprint
     local t = lua.get_functions_table()
     t[\the\ltjs@@magnify@font@calc] = function()
-      tex.sprint(-2,math.floor(0.5+mpt*getdimen('dimen@')))
+      sprint(-2,floor(0.5+mpt*getdimen(cnt_dimen_at)))
     end
     function luatexja.ltjs_unmagnify_fsize(a)
-      local s = luatexja.print_scaled(math.floor(0.5+a/mpt*65536))
-      tex.sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
+      local s = print_scaled(floor(0.5+a/mpt*65536))
+      sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
     end
   }
   \endgroup
diff --git a/src/ltjsreport.cls b/src/ltjsreport.cls
index 6f5a71a..cc794bf 100644
--- a/src/ltjsreport.cls
+++ b/src/ltjsreport.cls
@@ -38,7 +38,7 @@
 %%   Right brace   \}     Tilde         \~}
 \NeedsTeXFormat{LaTeX2e}
 \ProvidesClass{ltjsreport}
-  [2022/04/11 ltjsclasses ]
+  [2022/08/23 ltjsclasses ]
 \def\jsc@clsname{ltjsreport}
 \def\Cjascale{0.924715}
 \RequirePackage{luatexja}
@@ -253,13 +253,15 @@ option, since LuaTeX does not support \string\mag\MessageBreak in pdf output}%
   \begingroup\catcode`\%=12\relax
   \directlua{
     local getdimen, mpt=tex.getdimen, tex.getdimen('jsc@mpt')/65536
+    local floor, cnt_dimen_at = math.floor, luatexbase.registernumber 'dimen@'
+    local print_scaled, sprint = luatexja.print_scaled, tex.sprint
     local t = lua.get_functions_table()
     t[\the\ltjs@@magnify@font@calc] = function()
-      tex.sprint(-2,math.floor(0.5+mpt*getdimen('dimen@')))
+      sprint(-2,floor(0.5+mpt*getdimen(cnt_dimen_at)))
     end
     function luatexja.ltjs_unmagnify_fsize(a)
-      local s = luatexja.print_scaled(math.floor(0.5+a/mpt*65536))
-      tex.sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
+      local s = print_scaled(floor(0.5+a/mpt*65536))
+      sprint(-2, (s:match('%.0$')) and s:sub(1,-3) or s )
     end
   }
   \endgroup
diff --git a/src/luatexja-core.sty b/src/luatexja-core.sty
index 60e2835..b498551 100644
--- a/src/luatexja-core.sty
+++ b/src/luatexja-core.sty
@@ -147,8 +147,11 @@
 \ltj@curjfnt\m@ne
 \ltj@curtfnt\m@ne
 
-%%%%%%%% Attributes for character ranges
 \newcount\ltj@tempcnta
+\newcount\ltj@@stack \newcount\ltj@@group@level
+\ltj@@group@level\z@\ltj@@stack\z@
+
+%%%%%%%% Attributes for character ranges
 \ltj@tempcnta\z@
 \loop\ifnum\ltj@tempcnta<7
   \expandafter\newattribute%
@@ -298,9 +301,6 @@
   }
 
 %%%%%%%% \ltjsetparameter
-\newcount\ltj@@stack \newcount\ltj@@group@level
-\ltj@@group@level\z@\ltj@@stack\z@
-
 \setbox\z@\hbox{%
   \directlua{% This value depends on the version of LuaTeX.
     luatexja.stack.hmode = -tex.getnest().mode
diff --git a/src/luatexja.lua b/src/luatexja.lua
index 3547090..4c504dc 100644
--- a/src/luatexja.lua
+++ b/src/luatexja.lua
@@ -164,11 +164,11 @@ local floor = math.floor
 local function print_scaled(s)
    local out, delta = '', 10
    if s<0 then s, out = -s, out..'-' end
-   out=out..tostring(floor(s/65536)) .. '.'
+   out=out..tostring(s//65536) .. '.'
    s=10*(s%65536)+5
    repeat
       if delta>65536 then s=s+32768-50000 end
-      out=out .. tostring(floor(s/65536))
+      out=out .. tostring(s//65536)
       s=10*(s%65536); delta=delta*10
    until s<=delta
    return out
@@ -200,6 +200,8 @@ end
 ------------------------------------------------------------------------
 -- CODE FOR GETTING/SETTING PARAMETERS
 ------------------------------------------------------------------------
+local getcount, texwrite = tex.getcount, tex.write
+local cnt_stack = luatexbase.registernumber 'ltj@@stack'
 
 -- EXT: print parameters that don't need arguments
 do
@@ -263,7 +265,7 @@ do
    function luatexja.ext_get_parameter_unary()
       local k= scan_arg()
       if unary_pars[k] then
-         tex.write(tostring(unary_pars[k](tex.getcount('ltj@@stack'))))
+         texwrite(tostring(unary_pars[k](getcount(cnt_stack))))
       end
       ltjb.stop_time_measure('get_par')
    end
@@ -318,7 +320,7 @@ do
    binary_pars.alxspmode = binary_pars.jaxspmode
    function luatexja.ext_get_parameter_binary(k, c)
       if binary_pars[k] then
-         tex.write(tostring(binary_pars[k](c,tex.getcount('ltj@@stack'))))
+         texwrite(tostring(binary_pars[k](c, getcount(cnt_stack))))
       end
       ltjb.stop_time_measure('get_par')
    end