--
luatexbase.provides_module({
name = 'luatexja.stack',
- date = '2011/04/01',
- version = '0.1',
+ date = '2013/04/13',
description = 'LuaTeX-ja stack system',
})
module('luatexja.stack', package.seeall)
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
+local STCK = luatexja.userid_table.STCK
+hmode = 0 -- dummy
-local charprop_stack_table={}; charprop_stack_table[0]={}
+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')
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])
+ charprop_stack_table[i] = table.fastcopy(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)
+ g.user_id=STCK; g.type=100; g.value=j; node.write(g)
end
end
return i
-- EXT
function set_stack_table(g,m,c,p,lb,ub)
local i = get_stack_level()
- if p<lb or p>ub then
+ if type(p)~='number' or p<lb or p>ub then
ltjb.package_error('luatexja',
- "invalid code (".. p .. ")",
- {"The code should in the range "..tostring(lb) ..'..'.. tostring(ub) .. ".",
- "I'm going to use 0 instead of that illegal code value."})
+ "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 c<-1 or c>0x10ffff then
+ elseif type(c)~='number' or c<-1 or c>0x10ffff then
ltjb.package_error('luatexja',
- 'bad character code (' .. c .. ')',
- {'A character number must be between -1 and 0x10ffff.',
- "(-1 is used for denoting `math boundary')",
- 'So I changed this one to zero.'})
+ '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][m] then
- charprop_stack_table[i][m] = {}
end
- charprop_stack_table[i][m][c] = p
+ 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][m] then charprop_stack_table[j][m] = {} end
- charprop_stack_table[j][m][c] = p
+ 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 c<0 or c>255 then
+ if type(c)~='number' or c<0 or c>255 then
ltjb.package_error('luatexja',
- "invalid family number (".. p .. ")",
- {"The family number should in the range 0 .. 255.",
- "I'm going to use 0 instead of that illegal family number."})
+ "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][m] then
- charprop_stack_table[i][m] = {}
end
- charprop_stack_table[i][m][c] = p
- if g=='global' then
+ 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][m] then charprop_stack_table[j][m] = {} end
- charprop_stack_table[j][m][c] = p
+ charprop_stack_table[j][c+m] = p
end
end
end
end
end
--- mode: nil iff it is called in callbacks
-function get_skip_table(m, idx)
- local i = charprop_stack_table[idx][m]
- return i or { width = 0, stretch = 0, shrink = 0,
- stretch_order = 0, shrink_order = 0 }
+-- These three functions are used in ltj-jfmglue.lua.
+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 get_penalty_table(m,c,d, idx)
- local i = charprop_stack_table[idx][m]
- if i then i=i[c] 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(mc, d, idx)
+ local i = charprop_stack_table[idx][mc]
return i or d
end
+
-- EOF
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