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
|
--
-- ltj-stack.lua
--
luatexbase.provides_module({
name = 'luatexja.stack',
date = '2020-07-30',
description = 'LuaTeX-ja stack system',
})
luatexja.stack = {}
local ltjs=luatexja.stack
luatexja.load_module 'base'; local ltjb = luatexja.base
--------------------------------------------------------------------------------
-- stack table (obeys TeX's grouping)
--------------------------------------------------------------------------------
local node_new = node.new
local id_whatsit = node.id 'whatsit'
local sid_user = node.subtype 'user_defined'
local STCK = luatexja.userid_table.STCK
local fastcopy = table.fastcopy
local setcount, getcount = tex.setcount, tex.getcount
local scan_int, scan_keyword = token.scan_int, token.scan_keyword
ltjs.hmode = 0 -- dummy
local charprop_stack_table={};
ltjs.charprop_stack_table = charprop_stack_table
charprop_stack_table[0]={}
local function get_stack_level()
local i = getcount 'ltj@@stack'
local j = tex.currentgrouplevel
if j > 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.
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] = fastcopy(charprop_stack_table[i-1])
setcount('ltj@@stack', i)
if gd~=0 then tex.globaldefs = gd end
if tex.nest[tex.nest.ptr].mode == -ltjs.hmode then -- rest. hmode のみ
local g = node_new(id_whatsit, sid_user)
g.user_id=STCK; g.type=100; g.value=j; node.write(g)
end
end
return i
end
ltjs.get_stack_level = get_stack_level
local function set_stack_table(m, p)
local i = get_stack_level()
charprop_stack_table[i][m] = p
if luatexja.isglobal=='global' then
for j,v in pairs(charprop_stack_table) do
charprop_stack_table[j][m] = p
end
end
end
ltjs.set_stack_table = set_stack_table
-- EXT
function ltjs.set_stack_perchar(m,lb,ub, getter)
local c = scan_int()
scan_keyword(',')
local p = tonumber((getter or scan_int)())
if 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
end
set_stack_table(m+ltjb.in_unicode(c, true), p)
end
-- EXT
function ltjs.set_stack_font(m,c,p)
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
end
set_stack_table(m+c, p)
end
-- EXT: sp: glue_spec
function ltjs.set_stack_skip(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 luatexja.isglobal=='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.
-- list_dir and orig_char_table are used in other lua files.
local orig_char_table = {}
ltjs.orig_char_table = orig_char_table
ltjs.list_dir = nil -- dummy
ltjs.table_current_stack = nil -- dummy
function ltjs.report_stack_level(bsl)
ltjs.table_current_stack = charprop_stack_table[bsl]
return bsl
end
function ltjs.fast_get_stack_skip(m)
return ltjs.table_current_stack[m]
or { width = 0, stretch = 0, shrink = 0, stretch_order = 0, shrink_order = 0 }
end
-- For other situations, use the following instead:
function ltjs.get_stack_skip(m, idx)
return charprop_stack_table[idx][m]
or { width = 0, stretch = 0, shrink = 0, stretch_order = 0, shrink_order = 0 }
end
function ltjs.get_stack_table(mc, d, idx)
local i = charprop_stack_table[idx][mc]
return i or d
end
-- EOF
|
