diff options
Diffstat (limited to 'tex/context/base/l-table.lua')
| -rw-r--r-- | tex/context/base/l-table.lua | 325 |
1 files changed, 325 insertions, 0 deletions
diff --git a/tex/context/base/l-table.lua b/tex/context/base/l-table.lua index 92ef02503..c33cd195b 100644 --- a/tex/context/base/l-table.lua +++ b/tex/context/base/l-table.lua @@ -394,6 +394,8 @@ end -- todo: %g faster on numbers than %s +-- we can speed this up with repeaters and formatters (is indeed faster) + local propername = patterns.propername -- was find(name,"^%a[%w%_]*$") local function dummy() end @@ -711,6 +713,322 @@ local function serialize(_handle,root,name,specification) -- handle wins handle("}") end +-- -- This is some 20% faster than using format (because formatters are much faster) but +-- -- of course, inlining the format using .. is then again faster .. anyway, as we do +-- -- some pretty printing as well there is not that much to gain unless we make a 'fast' +-- -- ugly variant as well. But, we would have to move the formatter to l-string then. + +-- local formatters = string.formatters + +-- local function do_serialize(root,name,level,indexed) +-- if level > 0 then +-- if indexed then +-- handle(formatters["%w{"](level)) +-- else +-- local tn = type(name) +-- if tn == "number" then +-- if hexify then +-- handle(formatters["%w[%04H]={"](level,name)) +-- else +-- handle(formatters["%w[%s]={"](level,name)) +-- end +-- elseif tn == "string" then +-- if noquotes and not reserved[name] and lpegmatch(propername,name) then +-- handle(formatters["%w%s={"](level,name)) +-- else +-- handle(formatters["%w[%q]={"](level,name)) +-- end +-- elseif tn == "boolean" then +-- handle(formatters["%w[%S]={"](level,name)) +-- else +-- handle(formatters["%w{"](level)) +-- end +-- end +-- end +-- -- we could check for k (index) being number (cardinal) +-- if root and next(root) then +-- -- local first, last = nil, 0 -- #root cannot be trusted here (will be ok in 5.2 when ipairs is gone) +-- -- if compact then +-- -- -- NOT: for k=1,#root do (we need to quit at nil) +-- -- for k,v in ipairs(root) do -- can we use next? +-- -- if not first then first = k end +-- -- last = last + 1 +-- -- end +-- -- end +-- local first, last = nil, 0 +-- if compact then +-- last = #root +-- for k=1,last do +-- if root[k] == nil then +-- last = k - 1 +-- break +-- end +-- end +-- if last > 0 then +-- first = 1 +-- end +-- end +-- local sk = sortedkeys(root) +-- for i=1,#sk do +-- local k = sk[i] +-- local v = root[k] +-- --~ if v == root then +-- -- circular +-- --~ else +-- local t, tk = type(v), type(k) +-- if compact and first and tk == "number" and k >= first and k <= last then +-- if t == "number" then +-- if hexify then +-- handle(formatters["%w %04H,"](level,v)) +-- else +-- handle(formatters["%w %s,"](level,v)) -- %.99g +-- end +-- elseif t == "string" then +-- if reduce and tonumber(v) then +-- handle(formatters["%w %s,"](level,v)) +-- else +-- handle(formatters["%w %q,"](level,v)) +-- end +-- elseif t == "table" then +-- if not next(v) then +-- handle(formatters["%w {},"](level)) +-- elseif inline then -- and #t > 0 +-- local st = simple_table(v) +-- if st then +-- handle(formatters["%w { %, t },"](level,st)) +-- else +-- do_serialize(v,k,level+1,true) +-- end +-- else +-- do_serialize(v,k,level+1,true) +-- end +-- elseif t == "boolean" then +-- handle(formatters["%w %S,"](level,v)) +-- elseif t == "function" then +-- if functions then +-- handle(formatters['%w load(%q),'](level,dump(v))) +-- else +-- handle(formatters['%w "function",'](level)) +-- end +-- else +-- handle(formatters["%w %Q,"](level,v)) +-- end +-- elseif k == "__p__" then -- parent +-- if false then +-- handle(formatters["%w __p__=nil,"](level)) +-- end +-- elseif t == "number" then +-- if tk == "number" then +-- if hexify then +-- handle(formatters["%w [%04H]=%04H,"](level,k,v)) +-- else +-- handle(formatters["%w [%s]=%s,"](level,k,v)) -- %.99g +-- end +-- elseif tk == "boolean" then +-- if hexify then +-- handle(formatters["%w [%S]=%04H,"](level,k,v)) +-- else +-- handle(formatters["%w [%S]=%s,"](level,k,v)) -- %.99g +-- end +-- elseif noquotes and not reserved[k] and lpegmatch(propername,k) then +-- if hexify then +-- handle(formatters["%w %s=%04H,"](level,k,v)) +-- else +-- handle(formatters["%w %s=%s,"](level,k,v)) -- %.99g +-- end +-- else +-- if hexify then +-- handle(formatters["%w [%q]=%04H,"](level,k,v)) +-- else +-- handle(formatters["%w [%q]=%s,"](level,k,v)) -- %.99g +-- end +-- end +-- elseif t == "string" then +-- if reduce and tonumber(v) then +-- if tk == "number" then +-- if hexify then +-- handle(formatters["%w [%04H]=%s,"](level,k,v)) +-- else +-- handle(formatters["%w [%s]=%s,"](level,k,v)) +-- end +-- elseif tk == "boolean" then +-- handle(formatters["%w [%S]=%s,"](level,k,v)) +-- elseif noquotes and not reserved[k] and lpegmatch(propername,k) then +-- handle(formatters["%w %s=%s,"](level,k,v)) +-- else +-- handle(formatters["%w [%q]=%s,"](level,k,v)) +-- end +-- else +-- if tk == "number" then +-- if hexify then +-- handle(formatters["%w [%04H]=%q,"](level,k,v)) +-- else +-- handle(formatters["%w [%s]=%q,"](level,k,v)) +-- end +-- elseif tk == "boolean" then +-- handle(formatters["%w [%S]=%q,"](level,k,v)) +-- elseif noquotes and not reserved[k] and lpegmatch(propername,k) then +-- handle(formatters["%w %s=%q,"](level,k,v)) +-- else +-- handle(formatters["%w [%q]=%q,"](level,k,v)) +-- end +-- end +-- elseif t == "table" then +-- if not next(v) then +-- if tk == "number" then +-- if hexify then +-- handle(formatters["%w [%04H]={},"](level,k)) +-- else +-- handle(formatters["%w [%s]={},"](level,k)) +-- end +-- elseif tk == "boolean" then +-- handle(formatters["%w [%S]={},"](level,k)) +-- elseif noquotes and not reserved[k] and lpegmatch(propername,k) then +-- handle(formatters["%w %s={},"](level,k)) +-- else +-- handle(formatters["%w [%q]={},"](level,k)) +-- end +-- elseif inline then +-- local st = simple_table(v) +-- if st then +-- if tk == "number" then +-- if hexify then +-- handle(formatters["%w [%04H]={ %, t },"](level,k,st)) +-- else +-- handle(formatters["%w [%s]={ %, t },"](level,k,st)) +-- end +-- elseif tk == "boolean" then +-- handle(formatters["%w [%S]={ %, t },"](level,k,st)) +-- elseif noquotes and not reserved[k] and lpegmatch(propername,k) then +-- handle(formatters["%w %s={ %, t },"](level,k,st)) +-- else +-- handle(formatters["%w [%q]={ %, t },"](level,k,st)) +-- end +-- else +-- do_serialize(v,k,level+1) +-- end +-- else +-- do_serialize(v,k,level+1) +-- end +-- elseif t == "boolean" then +-- if tk == "number" then +-- if hexify then +-- handle(formatters["%w [%04H]=%S,"](level,k,v)) +-- else +-- handle(formatters["%w [%s]=%S,"](level,k,v)) +-- end +-- elseif tk == "boolean" then +-- handle(formatters["%w [%S]=%S,"](level,k,v)) +-- elseif noquotes and not reserved[k] and lpegmatch(propername,k) then +-- handle(formatters["%w %s=%S,"](level,k,v)) +-- else +-- handle(formatters["%w [%q]=%S,"](level,k,v)) +-- end +-- elseif t == "function" then +-- if functions then +-- local f = getinfo(v).what == "C" and dump(dummy) or dump(v) +-- -- local f = getinfo(v).what == "C" and dump(function(...) return v(...) end) or dump(v) +-- if tk == "number" then +-- if hexify then +-- handle(formatters["%w [%04H]=load(%q),"](level,k,f)) +-- else +-- handle(formatters["%w [%s]=load(%q),"](level,k,f)) +-- end +-- elseif tk == "boolean" then +-- handle(formatters["%w [%S]=load(%q),"](level,k,f)) +-- elseif noquotes and not reserved[k] and lpegmatch(propername,k) then +-- handle(formatters["%w %s=load(%q),"](level,k,f)) +-- else +-- handle(formatters["%w [%q]=load(%q),"](level,k,f)) +-- end +-- end +-- else +-- if tk == "number" then +-- if hexify then +-- handle(formatters["%w [%04H]=%Q,"](level,k,v)) +-- else +-- handle(formatters["%w [%s]=%Q,"](level,k,v)) +-- end +-- elseif tk == "boolean" then +-- handle(formatters["%w [%S]=%Q,"](level,k,v)) +-- elseif noquotes and not reserved[k] and lpegmatch(propername,k) then +-- handle(formatters["%w %s=%Q,"](level,k,v)) +-- else +-- handle(formatters["%w [%q]=%Q,"](level,k,v)) +-- end +-- end +-- --~ end +-- end +-- end +-- if level > 0 then +-- handle(formatters["%w}"](level)) +-- end +-- end + +-- local function serialize(_handle,root,name,specification) -- handle wins +-- local tname = type(name) +-- if type(specification) == "table" then +-- noquotes = specification.noquotes +-- hexify = specification.hexify +-- handle = _handle or specification.handle or print +-- reduce = specification.reduce or false +-- functions = specification.functions +-- compact = specification.compact +-- inline = specification.inline and compact +-- if functions == nil then +-- functions = true +-- end +-- if compact == nil then +-- compact = true +-- end +-- if inline == nil then +-- inline = compact +-- end +-- else +-- noquotes = false +-- hexify = false +-- handle = _handle or print +-- reduce = false +-- compact = true +-- inline = true +-- functions = true +-- end +-- if tname == "string" then +-- if name == "return" then +-- handle("return {") +-- else +-- handle(name .. "={") +-- end +-- elseif tname == "number" then +-- if hexify then +-- handle(format("[0x%04X]={",name)) +-- else +-- handle("[" .. name .. "]={") +-- end +-- elseif tname == "boolean" then +-- if name then +-- handle("return {") +-- else +-- handle("{") +-- end +-- else +-- handle("t={") +-- end +-- if root then +-- -- The dummy access will initialize a table that has a delayed initialization +-- -- using a metatable. (maybe explicitly test for metatable) +-- if getmetatable(root) then -- todo: make this an option, maybe even per subtable +-- local dummy = root._w_h_a_t_e_v_e_r_ +-- root._w_h_a_t_e_v_e_r_ = nil +-- end +-- -- Let's forget about empty tables. +-- if next(root) then +-- do_serialize(root,name,0) +-- end +-- end +-- handle("}") +-- end + -- name: -- -- true : return { } @@ -730,6 +1048,13 @@ function table.serialize(root,name,specification) return concat(t,"\n") end +-- local a = { e = { 1,2,3,4,5,6}, a = 1, b = 2, c = "ccc", d = { a = 1, b = 2, c = "ccc", d = { a = 1, b = 2, c = "ccc" } } } +-- local t = os.clock() +-- for i=1,10000 do +-- table.serialize(a) +-- end +-- print(os.clock()-t,table.serialize(a)) + table.tohandle = serialize -- sometimes tables are real use (zapfino extra pro is some 85M) in which |