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-rw-r--r--Master/texmf-dist/tex/luatex/luatexja/ltj-stack.lua168
1 files changed, 168 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/luatex/luatexja/ltj-stack.lua b/Master/texmf-dist/tex/luatex/luatexja/ltj-stack.lua
new file mode 100644
index 00000000000..dd31ab0a6a5
--- /dev/null
+++ b/Master/texmf-dist/tex/luatex/luatexja/ltj-stack.lua
@@ -0,0 +1,168 @@
+--
+-- 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
+
+local 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 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."})
+ p=0
+ elseif 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.'})
+ 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
+ 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
+ end
+ end
+end
+
+-- EXT
+function set_stack_font(g,m,c,p)
+ local i = get_stack_level()
+ if 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."})
+ 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
+ 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
+ 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
+
+-- 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 }
+end
+
+function get_penalty_table(m,c,d, idx)
+ local i = charprop_stack_table[idx][m]
+ if i then i=i[c] end
+ return i or d
+end
+
+-- EOF