1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
--
-- luatexja/stack.lua
--
luatexbase.provides_module({
name = 'luatexja.stack',
date = '2011/04/01',
version = '0.1',
description = 'LuaTeX-ja stack system',
})
module('luatexja.stack', package.seeall)
local err, warn, info, log = luatexbase.errwarinf(_NAME)
luatexja.load_module('base'); local ltjb = luatexja.base
local node_new = node.new
local id_whatsit = node.id('whatsit')
local sid_user = node.subtype('user_defined')
local hmode = 118 -- in luatexref-t.pdf, this must be 127
charprop_stack_table={};
local charprop_stack_table = charprop_stack_table
charprop_stack_table[0]={}
-- modified from table.fastcopy
local next = next
local function stack_table_copy_aux(old)
local new = {}
for i,v in next, old do
new[i] = v
end
return new
end
local function stack_table_copy(old)
if old then
local new = {}
for i,v in next, old do
new[i] = stack_table_copy_aux(v)
end
return new
else
return {}
end
end
function get_stack_level()
local i = tex.getcount('ltj@@stack')
local j = tex.currentgrouplevel
if j > tex.getcount('ltj@@group@level') 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.
tex.setcount('ltj@@group@level', 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] = stack_table_copy(charprop_stack_table[i-1])
tex.setcount('ltj@@stack', i)
if gd>0 then tex.globaldefs = gd end
if tex.nest[tex.nest.ptr].mode == hmode or
tex.nest[tex.nest.ptr].mode == -hmode then
local g = node_new(id_whatsit, sid_user)
g.user_id=30112; g.type=100; g.value=j; node.write(g)
end
end
return i
end
-- local function table_to_str(v)
-- local s = ''
-- for i, a in pairs(v) do
-- s = s .. i .. "=" .. tostring(a) .. ', '
-- end
-- return s
-- end
-- function print_stack_table(i)
-- print('\n>>> get_stack_level:')
-- for k, v in pairs(charprop_stack_table[i]) do
-- print(" " , k, type(k), table_to_str(v));
-- end
-- end
-- EXT
function set_stack_table(g,m,c,p,lb,ub)
local i = get_stack_level()
if type(p)~='number' or p<lb or p>ub then
ltjb.package_error('luatexja',
"invalid code (".. tostring(p) .. ")",
"The code should in the range "..tostring(lb) .. '..' ..
tostring(ub) .. ".\n" ..
"I'm going to use 0 instead of that illegal code value.")
p=0
elseif type(c)~='number' or c<-1 or c>0x10ffff then
ltjb.package_error('luatexja',
'bad character code (' .. tostring(c) .. ')',
'A character number must be between -1 and 0x10ffff.\n' ..
"(-1 is used for denoting `math boundary')\n" ..
'So I changed this one to zero.')
c=0
elseif not charprop_stack_table[i][c] then
charprop_stack_table[i][c] = {}
end
charprop_stack_table[i][c][m] = p
if g=='global' then
for j,v in pairs(charprop_stack_table) do
if not charprop_stack_table[j][c] then charprop_stack_table[j][c] = {} end
charprop_stack_table[j][c][m] = p
end
end
end
-- EXT
function set_stack_font(g,m,c,p)
local i = get_stack_level()
if type(c)~='number' or c<0 or c>255 then
ltjb.package_error('luatexja',
"invalid family number (".. tostring(c) .. ")",
"The family number should in the range 0 .. 255.\n" ..
"I'm going to use 0 instead of that illegal family number.")
c=0
elseif not charprop_stack_table[i][c] then
charprop_stack_table[i][c] = {}
end
charprop_stack_table[i][c][m] = p
if g=='global' then
for j,v in pairs(charprop_stack_table) do
if not charprop_stack_table[j][c] then charprop_stack_table[j][c] = {} end
charprop_stack_table[j][c][m] = p
end
end
end
-- EXT: store \ltj@tempskipa
function set_stack_skip(g,m,sp)
local i = get_stack_level()
if not sp then return end
if not charprop_stack_table[i][m] then
charprop_stack_table[i][m] = {}
end
charprop_stack_table[i][m].width = sp.width
charprop_stack_table[i][m].stretch = sp.stretch
charprop_stack_table[i][m].shrink = sp.shrink
charprop_stack_table[i][m].stretch_order = sp.stretch_order
charprop_stack_table[i][m].shrink_order = sp.shrink_order
if g=='global' then
for j,v in pairs(charprop_stack_table) do
if not charprop_stack_table[j][m] then charprop_stack_table[j][m] = {} end
charprop_stack_table[j][m].width = sp.width
charprop_stack_table[j][m].stretch = sp.stretch
charprop_stack_table[j][m].shrink = sp.shrink
charprop_stack_table[j][m].stretch_order = sp.stretch_order
charprop_stack_table[j][m].shrink_order = sp.shrink_order
end
end
end
-- These three functions are used in ltj-jfmglue.lua.
local table_current_stack
function report_stack_level(bsl)
table_current_stack = charprop_stack_table[bsl]
end
function fast_get_skip_table(m)
return table_current_stack[m]
or { width = 0, stretch = 0, shrink = 0, stretch_order = 0, shrink_order = 0 }
end
function fast_get_penalty_table(m,c)
local i = table_current_stack[c]
return (i and i[m])
end
local empty_table = {}
function fast_get_penalty_table_parent(c)
return table_current_stack[c] or empty_table
end
-- For other situations, use the following instead:
function get_skip_table(m, idx)
return charprop_stack_table[idx][m]
or { width = 0, stretch = 0, shrink = 0, stretch_order = 0, shrink_order = 0 }
end
function get_penalty_table(m,c,d, idx)
local i = charprop_stack_table[idx][c]
return (i and i[m]) or d
end
-- EOF
|