From 4295a3eb51db73a87774d59fb3a38a54690319f7 Mon Sep 17 00:00:00 2001
From: Philipp Gesang <phg@phi-gamma.net>
Date: Fri, 22 May 2015 07:55:17 +0200
Subject: sync with Context as of 2015-05-22

---
 lualibs-util-tab.lua | 60 ++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 46 insertions(+), 14 deletions(-)

(limited to 'lualibs-util-tab.lua')

diff --git a/lualibs-util-tab.lua b/lualibs-util-tab.lua
index 5eae0d5..618f34c 100644
--- a/lualibs-util-tab.lua
+++ b/lualibs-util-tab.lua
@@ -11,7 +11,7 @@ utilities.tables = utilities.tables or { }
 local tables     = utilities.tables
 
 local format, gmatch, gsub, sub = string.format, string.gmatch, string.gsub, string.sub
-local concat, insert, remove = table.concat, table.insert, table.remove
+local concat, insert, remove, sort = table.concat, table.insert, table.remove, table.sort
 local setmetatable, getmetatable, tonumber, tostring = setmetatable, getmetatable, tonumber, tostring
 local type, next, rawset, tonumber, tostring, load, select = type, next, rawset, tonumber, tostring, load, select
 local lpegmatch, P, Cs, Cc = lpeg.match, lpeg.P, lpeg.Cs, lpeg.Cc
@@ -571,8 +571,42 @@ function table.serialize(root,name,specification)
     local t -- = { }
     local n = 1
 
+--     local function simple_table(t)
+--         local ts = #t
+--         if ts > 0 then
+--             local n = 0
+--             for _, v in next, t do
+--                 n = n + 1
+--                 if type(v) == "table" then
+--                     return nil
+--                 end
+--             end
+--             if n == ts then
+--                 local tt = { }
+--                 local nt = 0
+--                 for i=1,ts do
+--                     local v = t[i]
+--                     local tv = type(v)
+--                     nt = nt + 1
+--                     if tv == "number" then
+--                         tt[nt] = v
+--                     elseif tv == "string" then
+--                         tt[nt] = format("%q",v) -- f_string(v)
+--                     elseif tv == "boolean" then
+--                         tt[nt] = v and "true" or "false"
+--                     else
+--                         return nil
+--                     end
+--                 end
+--                 return tt
+--             end
+--         end
+--         return nil
+--     end
+
     local function simple_table(t)
-        if #t > 0 then
+        local nt = #t
+        if nt > 0 then
             local n = 0
             for _, v in next, t do
                 n = n + 1
@@ -580,19 +614,17 @@ function table.serialize(root,name,specification)
                     return nil
                 end
             end
-            if n == #t then
+            if n == nt then
                 local tt = { }
-                local nt = 0
-                for i=1,#t do
+                for i=1,nt do
                     local v = t[i]
                     local tv = type(v)
-                    nt = nt + 1
                     if tv == "number" then
-                        tt[nt] = v
+                        tt[i] = v -- not needed tostring(v)
                     elseif tv == "string" then
-                        tt[nt] = format("%q",v) -- f_string(v)
+                        tt[i] = format("%q",v) -- f_string(v)
                     elseif tv == "boolean" then
-                        tt[nt] = v and "true" or "false"
+                        tt[i] = v and "true" or "false"
                     else
                         return nil
                     end
@@ -636,13 +668,13 @@ function table.serialize(root,name,specification)
             if last > 0 then
                 first = 1
             end
-            local sk = sortedkeys(root) -- inline fast version?
+            local sk = sortedkeys(root) -- inline fast version?\
             for i=1,#sk do
                 local k  = sk[i]
                 local v  = root[k]
                 local tv = type(v)
                 local tk = type(k)
-                if first and tk == "number" and k >= first and k <= last then
+                if first and tk == "number" and k <= last and k >= first then
                     if tv == "number" then
                         n = n + 1 t[n] = f_val_num(depth,v)
                     elseif tv == "string" then
@@ -680,11 +712,11 @@ function table.serialize(root,name,specification)
                 elseif tv == "table" then
                     if next(v) == nil then
                         if tk == "number" then
-                            n = n + 1 t[n] = f_key_num_value_not(depth,k,v)
+                            n = n + 1 t[n] = f_key_num_value_not(depth,k)
                         elseif tk == "string" then
-                            n = n + 1 t[n] = f_key_str_value_not(depth,k,v)
+                            n = n + 1 t[n] = f_key_str_value_not(depth,k)
                         elseif tk == "boolean" then
-                            n = n + 1 t[n] = f_key_boo_value_not(depth,k,v)
+                            n = n + 1 t[n] = f_key_boo_value_not(depth,k)
                         end
                     else
                         local st = simple_table(v)
-- 
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