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-rw-r--r--lualibs-table.lua637
1 files changed, 503 insertions, 134 deletions
diff --git a/lualibs-table.lua b/lualibs-table.lua
index 80f28c2..640bbbb 100644
--- a/lualibs-table.lua
+++ b/lualibs-table.lua
@@ -6,68 +6,23 @@ if not modules then modules = { } end modules ['l-table'] = {
license = "see context related readme files"
}
-local type, next, tostring, tonumber, ipairs = type, next, tostring, tonumber, ipairs
+local type, next, tostring, tonumber, ipairs, select = type, next, tostring, tonumber, ipairs, select
local table, string = table, string
local concat, sort, insert, remove = table.concat, table.sort, table.insert, table.remove
-local format, find, gsub, lower, dump, match = string.format, string.find, string.gsub, string.lower, string.dump, string.match
+local format, lower, dump = string.format, string.lower, string.dump
local getmetatable, setmetatable = getmetatable, setmetatable
local getinfo = debug.getinfo
-
--- Starting with version 5.2 Lua no longer provide ipairs, which makes
--- sense. As we already used the for loop and # in most places the
--- impact on ConTeXt was not that large; the remaining ipairs already
--- have been replaced. In a similar fashion we also hardly used pairs.
---
--- Hm, actually ipairs was retained, but we no longer use it anyway.
---
--- Just in case, we provide the fallbacks as discussed in Programming
--- in Lua (http://www.lua.org/pil/7.3.html):
-
-if not ipairs then
-
- -- for k, v in ipairs(t) do ... end
- -- for k=1,#t do local v = t[k] ... end
-
- local function iterate(a,i)
- i = i + 1
- local v = a[i]
- if v ~= nil then
- return i, v --, nil
- end
- end
-
- function ipairs(a)
- return iterate, a, 0
- end
-
-end
-
-if not pairs then
-
- -- for k, v in pairs(t) do ... end
- -- for k, v in next, t do ... end
-
- function pairs(t)
- return next, t -- , nil
- end
-
-end
-
--- Also, unpack has been moved to the table table, and for compatiility
--- reasons we provide both now.
-
-if not table.unpack then
- table.unpack = _G.unpack
-elseif not unpack then
- _G.unpack = table.unpack
-end
+local lpegmatch, patterns = lpeg.match, lpeg.patterns
+local floor = math.floor
-- extra functions, some might go (when not used)
+local stripper = patterns.stripper
+
function table.strip(tab)
local lst, l = { }, 0
for i=1,#tab do
- local s = gsub(tab[i],"^%s*(.-)%s*$","%1")
+ local s = lpegmatch(stripper,tab[i]) or ""
if s == "" then
-- skip this one
else
@@ -130,7 +85,7 @@ local function sortedkeys(tab)
end
end
-local function sortedhashkeys(tab) -- fast one
+local function sortedhashkeys(tab,cmp) -- fast one
if tab then
local srt, s = { }, 0
for key,_ in next, tab do
@@ -139,21 +94,38 @@ local function sortedhashkeys(tab) -- fast one
srt[s] = key
end
end
- sort(srt)
+ sort(srt,cmp)
return srt
else
return { }
end
end
+function table.allkeys(t)
+ local keys = { }
+ for k, v in next, t do
+ for k, v in next, v do
+ keys[k] = true
+ end
+ end
+ return sortedkeys(keys)
+end
+
table.sortedkeys = sortedkeys
table.sortedhashkeys = sortedhashkeys
local function nothing() end
-local function sortedhash(t)
+local function sortedhash(t,cmp)
if t then
- local n, s = 0, sortedkeys(t) -- the robust one
+ local s
+ if cmp then
+ -- it would be nice if teh sort function would accept a third argument (or nicer, an optional first)
+ s = sortedhashkeys(t,function(a,b) return cmp(t,a,b) end)
+ else
+ s = sortedkeys(t) -- the robust one
+ end
+ local n = 0
local function kv(s)
n = n + 1
local k = s[n]
@@ -166,7 +138,7 @@ local function sortedhash(t)
end
table.sortedhash = sortedhash
-table.sortedpairs = sortedhash
+table.sortedpairs = sortedhash -- obsolete
function table.append(t,list)
local n = #t
@@ -190,31 +162,63 @@ function table.prepend(t, list)
return t
end
+-- function table.merge(t, ...) -- first one is target
+-- t = t or { }
+-- local lst = { ... }
+-- for i=1,#lst do
+-- for k, v in next, lst[i] do
+-- t[k] = v
+-- end
+-- end
+-- return t
+-- end
+
function table.merge(t, ...) -- first one is target
t = t or { }
- local lst = { ... }
- for i=1,#lst do
- for k, v in next, lst[i] do
+ for i=1,select("#",...) do
+ for k, v in next, (select(i,...)) do
t[k] = v
end
end
return t
end
+-- function table.merged(...)
+-- local tmp, lst = { }, { ... }
+-- for i=1,#lst do
+-- for k, v in next, lst[i] do
+-- tmp[k] = v
+-- end
+-- end
+-- return tmp
+-- end
+
function table.merged(...)
- local tmp, lst = { }, { ... }
- for i=1,#lst do
- for k, v in next, lst[i] do
- tmp[k] = v
+ local t = { }
+ for i=1,select("#",...) do
+ for k, v in next, (select(i,...)) do
+ t[k] = v
end
end
- return tmp
+ return t
end
+-- function table.imerge(t, ...)
+-- local lst, nt = { ... }, #t
+-- for i=1,#lst do
+-- local nst = lst[i]
+-- for j=1,#nst do
+-- nt = nt + 1
+-- t[nt] = nst[j]
+-- end
+-- end
+-- return t
+-- end
+
function table.imerge(t, ...)
- local lst, nt = { ... }, #t
- for i=1,#lst do
- local nst = lst[i]
+ local nt = #t
+ for i=1,select("#",...) do
+ local nst = select(i,...)
for j=1,#nst do
nt = nt + 1
t[nt] = nst[j]
@@ -223,10 +227,22 @@ function table.imerge(t, ...)
return t
end
+-- function table.imerged(...)
+-- local tmp, ntmp, lst = { }, 0, {...}
+-- for i=1,#lst do
+-- local nst = lst[i]
+-- for j=1,#nst do
+-- ntmp = ntmp + 1
+-- tmp[ntmp] = nst[j]
+-- end
+-- end
+-- return tmp
+-- end
+
function table.imerged(...)
- local tmp, ntmp, lst = { }, 0, {...}
- for i=1,#lst do
- local nst = lst[i]
+ local tmp, ntmp = { }, 0
+ for i=1,select("#",...) do
+ local nst = select(i,...)
for j=1,#nst do
ntmp = ntmp + 1
tmp[ntmp] = nst[j]
@@ -238,7 +254,7 @@ end
local function fastcopy(old,metatabletoo) -- fast one
if old then
local new = { }
- for k,v in next, old do
+ for k, v in next, old do
if type(v) == "table" then
new[k] = fastcopy(v,metatabletoo) -- was just table.copy
else
@@ -292,7 +308,7 @@ end
table.fastcopy = fastcopy
table.copy = copy
-function table.derive(parent)
+function table.derive(parent) -- for the moment not public
local child = { }
if parent then
setmetatable(child,{ __index = parent })
@@ -373,6 +389,15 @@ end
-- problem: there no good number_to_string converter with the best resolution
+-- probably using .. is faster than format
+-- maybe split in a few cases (yes/no hexify)
+
+-- 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
local function do_serialize(root,name,depth,level,indexed)
@@ -382,14 +407,14 @@ local function do_serialize(root,name,depth,level,indexed)
handle(format("%s{",depth))
else
local tn = type(name)
- if tn == "number" then -- or find(k,"^%d+$") then
+ if tn == "number" then
if hexify then
handle(format("%s[0x%04X]={",depth,name))
else
handle(format("%s[%s]={",depth,name))
end
elseif tn == "string" then
- if noquotes and not reserved[name] and find(name,"^%a[%w%_]*$") then
+ if noquotes and not reserved[name] and lpegmatch(propername,name) then
handle(format("%s%s={",depth,name))
else
handle(format("%s[%q]={",depth,name))
@@ -415,7 +440,6 @@ local function do_serialize(root,name,depth,level,indexed)
if compact then
last = #root
for k=1,last do
--- if not root[k] then
if root[k] == nil then
last = k - 1
break
@@ -463,7 +487,7 @@ local function do_serialize(root,name,depth,level,indexed)
handle(format("%s %s,",depth,tostring(v)))
elseif t == "function" then
if functions then
- handle(format('%s loadstring(%q),',depth,dump(v)))
+ handle(format('%s load(%q),',depth,dump(v)))
else
handle(format('%s "function",',depth))
end
@@ -475,7 +499,7 @@ local function do_serialize(root,name,depth,level,indexed)
handle(format("%s __p__=nil,",depth))
end
elseif t == "number" then
- if tk == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then
if hexify then
handle(format("%s [0x%04X]=0x%04X,",depth,k,v))
else
@@ -487,7 +511,7 @@ local function do_serialize(root,name,depth,level,indexed)
else
handle(format("%s [%s]=%s,",depth,tostring(k),v)) -- %.99g
end
- elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
+ elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
if hexify then
handle(format("%s %s=0x%04X,",depth,k,v))
else
@@ -502,7 +526,7 @@ local function do_serialize(root,name,depth,level,indexed)
end
elseif t == "string" then
if reduce and tonumber(v) then
- if tk == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then
if hexify then
handle(format("%s [0x%04X]=%s,",depth,k,v))
else
@@ -510,13 +534,13 @@ local function do_serialize(root,name,depth,level,indexed)
end
elseif tk == "boolean" then
handle(format("%s [%s]=%s,",depth,tostring(k),v))
- elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
+ elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
handle(format("%s %s=%s,",depth,k,v))
else
handle(format("%s [%q]=%s,",depth,k,v))
end
else
- if tk == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then
if hexify then
handle(format("%s [0x%04X]=%q,",depth,k,v))
else
@@ -524,7 +548,7 @@ local function do_serialize(root,name,depth,level,indexed)
end
elseif tk == "boolean" then
handle(format("%s [%s]=%q,",depth,tostring(k),v))
- elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
+ elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
handle(format("%s %s=%q,",depth,k,v))
else
handle(format("%s [%q]=%q,",depth,k,v))
@@ -532,7 +556,7 @@ local function do_serialize(root,name,depth,level,indexed)
end
elseif t == "table" then
if not next(v) then
- if tk == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then
if hexify then
handle(format("%s [0x%04X]={},",depth,k))
else
@@ -540,7 +564,7 @@ local function do_serialize(root,name,depth,level,indexed)
end
elseif tk == "boolean" then
handle(format("%s [%s]={},",depth,tostring(k)))
- elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
+ elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
handle(format("%s %s={},",depth,k))
else
handle(format("%s [%q]={},",depth,k))
@@ -548,15 +572,15 @@ local function do_serialize(root,name,depth,level,indexed)
elseif inline then
local st = simple_table(v)
if st then
- if tk == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then
if hexify then
handle(format("%s [0x%04X]={ %s },",depth,k,concat(st,", ")))
else
handle(format("%s [%s]={ %s },",depth,k,concat(st,", ")))
end
- elseif tk == "boolean" then -- or find(k,"^%d+$") then
+ elseif tk == "boolean" then
handle(format("%s [%s]={ %s },",depth,tostring(k),concat(st,", ")))
- elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
+ elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
handle(format("%s %s={ %s },",depth,k,concat(st,", ")))
else
handle(format("%s [%q]={ %s },",depth,k,concat(st,", ")))
@@ -568,15 +592,15 @@ local function do_serialize(root,name,depth,level,indexed)
do_serialize(v,k,depth,level+1)
end
elseif t == "boolean" then
- if tk == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then
if hexify then
handle(format("%s [0x%04X]=%s,",depth,k,tostring(v)))
else
handle(format("%s [%s]=%s,",depth,k,tostring(v)))
end
- elseif tk == "boolean" then -- or find(k,"^%d+$") then
+ elseif tk == "boolean" then
handle(format("%s [%s]=%s,",depth,tostring(k),tostring(v)))
- elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
+ elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
handle(format("%s %s=%s,",depth,k,tostring(v)))
else
handle(format("%s [%q]=%s,",depth,k,tostring(v)))
@@ -585,30 +609,30 @@ local function do_serialize(root,name,depth,level,indexed)
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 -- or find(k,"^%d+$") then
+ if tk == "number" then
if hexify then
- handle(format("%s [0x%04X]=loadstring(%q),",depth,k,f))
+ handle(format("%s [0x%04X]=load(%q),",depth,k,f))
else
- handle(format("%s [%s]=loadstring(%q),",depth,k,f))
+ handle(format("%s [%s]=load(%q),",depth,k,f))
end
elseif tk == "boolean" then
- handle(format("%s [%s]=loadstring(%q),",depth,tostring(k),f))
- elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
- handle(format("%s %s=loadstring(%q),",depth,k,f))
+ handle(format("%s [%s]=load(%q),",depth,tostring(k),f))
+ elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
+ handle(format("%s %s=load(%q),",depth,k,f))
else
- handle(format("%s [%q]=loadstring(%q),",depth,k,f))
+ handle(format("%s [%q]=load(%q),",depth,k,f))
end
end
else
- if tk == "number" then -- or find(k,"^%d+$") then
+ if tk == "number" then
if hexify then
handle(format("%s [0x%04X]=%q,",depth,k,tostring(v)))
else
handle(format("%s [%s]=%q,",depth,k,tostring(v)))
end
- elseif tk == "boolean" then -- or find(k,"^%d+$") then
+ elseif tk == "boolean" then
handle(format("%s [%s]=%q,",depth,tostring(k),tostring(v)))
- elseif noquotes and not reserved[k] and find(k,"^%a[%w%_]*$") then
+ elseif noquotes and not reserved[k] and lpegmatch(propername,k) then
handle(format("%s %s=%q,",depth,k,tostring(v)))
else
handle(format("%s [%q]=%q,",depth,k,tostring(v)))
@@ -689,14 +713,330 @@ local function serialize(_handle,root,name,specification) -- handle wins
handle("}")
end
---~ name:
---~
---~ true : return { }
---~ false : { }
---~ nil : t = { }
---~ string : string = { }
---~ 'return' : return { }
---~ number : [number] = { }
+-- -- 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 { }
+-- false : { }
+-- nil : t = { }
+-- string : string = { }
+-- "return" : return { }
+-- number : [number] = { }
function table.serialize(root,name,specification)
local t, n = { }, 0
@@ -708,6 +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
@@ -752,7 +1099,7 @@ local function flattened(t,f,depth)
f = { }
depth = 0xFFFF
elseif tonumber(f) then
- -- assume then only two arguments are given
+ -- assume that only two arguments are given
depth = f
f = { }
elseif not depth then
@@ -785,7 +1132,7 @@ table.flattened = flattened
local function unnest(t,f) -- only used in mk, for old times sake
if not f then -- and only relevant for token lists
- f = { }
+ f = { } -- this one can become obsolete
end
for i=1,#t do
local v = t[i]
@@ -814,7 +1161,7 @@ local function are_equal(a,b,n,m) -- indexed
local ai, bi = a[i], b[i]
if ai==bi then
-- same
- elseif type(ai)=="table" and type(bi)=="table" then
+ elseif type(ai) == "table" and type(bi) == "table" then
if not are_equal(ai,bi) then
return false
end
@@ -849,10 +1196,10 @@ table.are_equal = are_equal
-- maybe also make a combined one
-function table.compact(t)
+function table.compact(t) -- remove empty tables, assumes subtables
if t then
- for k,v in next, t do
- if not next(v) then
+ for k, v in next, t do
+ if not next(v) then -- no type checking
t[k] = nil
end
end
@@ -881,25 +1228,25 @@ end
function table.swapped(t,s) -- hash
local n = { }
if s then
---~ for i=1,#s do
---~ n[i] = s[i]
---~ end
for k, v in next, s do
n[k] = v
end
end
---~ for i=1,#t do
---~ local ti = t[i] -- don't ask but t[i] can be nil
---~ if ti then
---~ n[ti] = i
---~ end
---~ end
for k, v in next, t do
n[v] = k
end
return n
end
+function table.mirrored(t) -- hash
+ local n = { }
+ for k, v in next, t do
+ n[v] = k
+ n[k] = v
+ end
+ return n
+end
+
function table.reversed(t)
if t then
local tt, tn = { }, #t
@@ -914,9 +1261,31 @@ function table.reversed(t)
end
end
-function table.sequenced(t,sep) -- hash only
+function table.reverse(t)
if t then
- local s, n = { }, 0
+ local n = #t
+ for i=1,floor(n/2) do
+ local j = n - i + 1
+ t[i], t[j] = t[j], t[i]
+ end
+ return t
+ end
+end
+
+function table.sequenced(t,sep,simple) -- hash only
+ if not t then
+ return ""
+ end
+ local n = #t
+ local s = { }
+ if n > 0 then
+ -- indexed
+ for i=1,n do
+ s[i] = tostring(t[i])
+ end
+ else
+ -- hashed
+ n = 0
for k, v in sortedhash(t) do
if simple then
if v == true then
@@ -931,20 +1300,20 @@ function table.sequenced(t,sep) -- hash only
s[n] = k .. "=" .. tostring(v)
end
end
- return concat(s, sep or " | ")
- else
- return ""
end
+ return concat(s,sep or " | ")
end
function table.print(t,...)
if type(t) ~= "table" then
print(tostring(t))
else
- table.tohandle(print,t,...)
+ serialize(print,t,...)
end
end
+setinspector(function(v) if type(v) == "table" then serialize(print,v,"table") return true end end)
+
-- -- -- obsolete but we keep them for a while and might comment them later -- -- --
-- roughly: copy-loop : unpack : sub == 0.9 : 0.4 : 0.45 (so in critical apps, use unpack)
@@ -990,7 +1359,7 @@ function table.unique(old)
return new
end
--- function table.sorted(t,...)
--- table.sort(t,...)
--- return t -- still sorts in-place
--- end
+function table.sorted(t,...)
+ sort(t,...)
+ return t -- still sorts in-place
+end
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 06:33:11 +0000