diff options
Diffstat (limited to 'tex/context/base/mkiv/math-noa.lua')
| -rw-r--r-- | tex/context/base/mkiv/math-noa.lua | 145 |
1 files changed, 82 insertions, 63 deletions
diff --git a/tex/context/base/mkiv/math-noa.lua b/tex/context/base/mkiv/math-noa.lua index 112972d8f..29b5cbd7e 100644 --- a/tex/context/base/mkiv/math-noa.lua +++ b/tex/context/base/mkiv/math-noa.lua @@ -835,8 +835,8 @@ do if chr == dummyfencechar then chr = 0 end - setfield(d,"small_char",chr) - setfield(d,"small_fam",fam) + setchar(d,chr) + setfam(d,fam) flush_node(sym) end setattrlist(d,char) @@ -847,73 +847,61 @@ do return f end - -- will become +-- local function show(where,pointer) +-- print("") +-- local i = 0 +-- for n in nuts.traverse(pointer) do +-- i = i + 1 +-- print(i,where,nuts.tonode(n)) +-- end +-- print("") +-- end - -- local function makefence(what,char) - -- local d = new_delimiter() -- todo: attr - -- local f = new_fence() -- todo: attr - -- if char then - -- local sym = getnucleus(char) - -- local chr = getchar(sym) - -- local fam = getfam(sym) - -- if chr == dummyfencechar then - -- chr = 0 - -- end - -- setchar(d,chr) - -- setfam(d,fam) - -- flush_node(sym) - -- end - -- setsubtype(f,what) - -- setfield(f,"delim",d) - -- setfield(f,"class",-1) -- tex itself does this, so not fenceclasses[what] - -- return f - -- end - - local function makelist(noad,f_o,o_next,c_prev,f_c,middle) + local function makelist(middle, noad, f_o,o_next,c_prev,f_c) local list = new_submlist() - setlist(list,f_o) setsubtype(noad,innernoad_code) setnucleus(noad,list) - setlink(f_o,o_next) - setlink(c_prev,f_c) + setlist(list,f_o) + setlink(f_o,o_next) -- prev of list is nil + setlink(c_prev,f_c) -- next of list is nil if middle and next(middle) then local prev = f_o local current = o_next while current ~= f_c do - local m = middle[current] - if m then - local next = getnext(current) + local midl = middle[current] + local next = getnext(current) + if midl then local fence = makefence(middlefence_code,current) setnucleus(current) flush_node(current) middle[current] = nil -- replace_node setlink(prev,fence,next) - prev = fence - current = next + prev = fence else prev = current - current = getnext(current) end + current = next end end + return noad end + -- relinking is not somewhat overdone + local function convert_both(open,close,middle) local o_prev, o_next = getboth(open) - local c_prev, c_next = getboth(close) if o_next == close then return close else + local c_prev, c_next = getboth(close) local f_o = makefence(leftfence_code,open) local f_c = makefence(rightfence_code,close) - makelist(open,f_o,o_next,c_prev,f_c,middle) + makelist(middle, open, f_o,o_next,c_prev,f_c) setnucleus(close) flush_node(close) - if c_next then - setprev(c_next,open) - end - setnext(open,c_next) + -- open is now a list + setlink(open,c_next) return open end end @@ -923,24 +911,29 @@ do local f_c = makefence(rightfence_code) local o_prev, o_next = getboth(open) local l_prev, l_next = getboth(last) - makelist(open,f_o,o_next,last,f_c,middle) - if l_next then - setprev(l_next,open) - end - setnext(open,l_next) + makelist(middle, open, f_o,o_next,l_prev,f_c) + -- open is now a list + setlink(open,l_next) return open end - local function convert_close(close,first,middle) + local function convert_close(first,close,middle) local f_o = makefence(leftfence_code) local f_c = makefence(rightfence_code,close) - local c_prev = getprev(close) - makelist(close,f_o,first,c_prev,f_c,middle) + local c_prev, c_next = getboth(close) + local f_prev, f_next = getboth(first) + makelist(middle, close, f_o,f_next,c_prev,f_c) + -- close is now a list + if c_prev ~= first then + setlink(first,close) + end return close end local stacks = setmetatableindex("table") + -- 1=open 2=close 3=middle 4=both + local function processfences(pointer,n,parent) local current = pointer local last = pointer @@ -950,47 +943,75 @@ do local stack = nil local middle = nil -- todo: use properties while current do +-- show("before",pointer) local id = getid(current) if id == noad_code then local a = getattr(current,a_autofence) if a and a > 0 then local stack = stacks[n] - setattr(current,a_autofence,0) - if a == 1 or (a == 4 and (not stack or #stack == 0)) then + setattr(current,a_autofence,0) -- hm, better use a property + local level = #stack + if a == 1 then if trace_fences then - report_fences("%2i: pushing open on stack",n) + report_fences("%2i: level %i, handling %s, action %s",n,level,"open","open") end insert(stack,current) - elseif a == 2 or a == 4 then + elseif a == 2 then local open = remove(stack) if open then if trace_fences then - report_fences("%2i: handling %s, stack depth %i",n,"both",#stack+1) + report_fences("%2i: level %i, handling %s, action %s",n,level,"close","both") end current = convert_both(open,current,middle) elseif current == start then - -- skip + if trace_fences then + report_fences("%2i: level %i, handling %s, action %s",n,level,"close","skip") + end else if trace_fences then - report_fences("%2i: handling %s, stack depth %i",n,"close",#stack+1) + report_fences("%2i: level %i, handling %s, action %s",n,level,"close","close") end - current = convert_close(current,initial,middle) + current = convert_close(initial,current,middle) if not parent then initial = current end end - if trace_fences then - report_fences("%2i: popping close from stack",n) - end elseif a == 3 then if trace_fences then - report_fences("%2i: registering middle",n) + report_fences("%2i: level %i, handling %s, action %s",n,level,"middle","middle") end if middle then middle[current] = last else middle = { [current] = last } end + elseif a == 4 then + if not stack or #stack == 0 then + if trace_fences then + report_fences("%2i: level %i, handling %s, action %s",n,level,"both","open") + end + insert(stack,current) + else + local open = remove(stack) + if open then + if trace_fences then + report_fences("%2i: level %i, handling %s, action %s",n,level,"both","both") + end + current = convert_both(open,current,middle) + elseif current == start then + if trace_fences then + report_fences("%2i: level %i, handling %s, action %s",n,level,"both","skip") + end + else + if trace_fences then + report_fences("%2i: level %i, handling %s, action %s",n,level,"both","close") + end + current = convert_close(initial,current,middle) + if not parent then + initial = current + end + end + end end done = true else @@ -1000,6 +1021,7 @@ do -- next at current level processstep(current,processfences,n,id) end +-- show("after",pointer) last = current current = getnext(current) end @@ -1007,13 +1029,10 @@ do local stack = stacks[n] local s = #stack if s > 0 then - if trace_fences then - report_fences("%2i: handling %s stack levels",n,s) - end for i=1,s do local open = remove(stack) if trace_fences then - report_fences("%2i: handling %s, stack depth %i",n,"open",#stack) + report_fences("%2i: level %i, handling %s, action %s",#stack,"flush","open") end last = convert_open(open,last,middle) end |