4 luatexbase.provides_module({
5 name = 'luatexja.stack',
8 description = 'LuaTeX-ja stack system',
10 module('luatexja.stack', package.seeall)
11 local err, warn, info, log = luatexbase.errwarinf(_NAME)
13 require('luatexja.base'); local ltjb = luatexja.base
15 local node_new = node.new
16 local id_whatsit = node.id('whatsit')
17 local sid_user = node.subtype('user_defined')
18 local hmode = 118 -- in luatexref-t.pdf, this must be 127
20 local charprop_stack_table={}; charprop_stack_table[0]={}
22 function get_stack_level()
23 local i = tex.getcount('ltj@@stack')
24 local j = tex.currentgrouplevel
25 if j > tex.getcount('ltj@@group@level') then
26 i = i+1 -- new stack level
27 local gd = tex.globaldefs
28 if gd>0 then tex.globaldefs = 0 end
29 -- 'tex.globaldefs = 0' is local even if \globaldefs > 0.
30 tex.setcount('ltj@@group@level', j)
31 for k,v in pairs(charprop_stack_table) do -- clear the stack above i
32 if k>=i then charprop_stack_table[k]=nil end
34 charprop_stack_table[i] = table.fastcopy(charprop_stack_table[i-1])
35 tex.setcount('ltj@@stack', i)
36 if gd>0 then tex.globaldefs = gd end
37 print('mode: ', tex.nest[tex.nest.ptr].mode)
38 if tex.nest[tex.nest.ptr].mode == hmode or
39 tex.nest[tex.nest.ptr].mode == -hmode then
40 local g = node_new(id_whatsit, sid_user)
41 g.user_id=30112; g.type=100; g.value=j; node.write(g)
48 function set_stack_table(g,m,c,p,lb,ub)
49 local i = get_stack_level()
51 ltjb.package_error('luatexja',
52 "invalid code (".. p .. ")",
53 {"The code should in the range "..tostring(lb) ..'..'.. tostring(ub) .. ".",
54 "I'm going to use 0 instead of that illegal code value."})
56 elseif c<-1 or c>0x10ffff then
57 ltjb.package_error('luatexja',
58 'bad character code (' .. c .. ')',
59 {'A character number must be between -1 and 0x10ffff.',
60 "(-1 is used for denoting `math boundary')",
61 'So I changed this one to zero.'})
63 elseif not charprop_stack_table[i][c] then
64 charprop_stack_table[i][c] = {}
66 charprop_stack_table[i][c][m] = p
68 for j,v in pairs(charprop_stack_table) do
69 if not charprop_stack_table[j][c] then charprop_stack_table[j][c] = {} end
70 charprop_stack_table[j][c][m] = p
76 function set_stack_font(g,m,c,p)
77 local i = get_stack_level()
79 ltjb.package_error('luatexja',
80 "invalid family number (".. p .. ")",
81 {"The family number should in the range 0 .. 255.",
82 "I'm going to use 0 instead of that illegal family number."})
84 elseif not charprop_stack_table[i][c] then
85 charprop_stack_table[i][c] = {}
87 charprop_stack_table[i][c][m] = p
89 for j,v in pairs(charprop_stack_table) do
90 if not charprop_stack_table[j][c] then charprop_stack_table[j][c] = {} end
91 charprop_stack_table[j][c][m] = p
96 -- EXT: store \ltj@tempskipa
97 function set_stack_skip(g,c,sp)
98 local i = get_stack_level()
99 if not sp then return end
100 if not charprop_stack_table[i][c] then
101 charprop_stack_table[i][c] = {}
103 charprop_stack_table[i][c].width = sp.width
104 charprop_stack_table[i][c].stretch = sp.stretch
105 charprop_stack_table[i][c].shrink = sp.shrink
106 charprop_stack_table[i][c].stretch_order = sp.stretch_order
107 charprop_stack_table[i][c].shrink_order = sp.shrink_order
109 for j,v in pairs(charprop_stack_table) do
110 if not charprop_stack_table[j][c] then charprop_stack_table[j][c] = {} end
111 charprop_stack_table[j][c].width = sp.width
112 charprop_stack_table[j][c].stretch = sp.stretch
113 charprop_stack_table[j][c].shrink = sp.shrink
114 charprop_stack_table[j][c].stretch_order = sp.stretch_order
115 charprop_stack_table[j][c].shrink_order = sp.shrink_order
120 -- mode: nil iff it is called in callbacks
121 function get_skip_table(m, idx)
122 local i = charprop_stack_table[idx][m]
123 return i or { width = 0, stretch = 0, shrink = 0,
124 stretch_order = 0, shrink_order = 0 }
127 function get_penalty_table(m,c,d, idx)
128 local i = charprop_stack_table[idx][c]