LuaVsJSON.lua

local lua = [[{
  ["hello"]="there\nworld",
  ["array"]={1,2,3,1e6,{["more"]=false},nil,true},
  ["more"]={
    ["hello"]="there\nworld",
    ["array"]={1,2,3,1e6,{["more"]=false},nil,true},
    ["more"]={
      ["hello"]="there\nworld",
      ["array"]={1,2,3,1e6,{["more"]=false},nil,true},
      ["more"]={
        ["hello"]="there\nworld",
        ["array"]={1,2,3,1e6,{["more"]="\"And\" \"actually,\" \"doesn't\" \"hurt\" \"to\" \"benchmark\" \"both,\" \"huh?\" \":)\""},nil,true}
      }
    }
  }
}]]
local json = lua:gsub('%["','"'):gsub('"%]','"'):gsub('=',':'):gsub('nil','null'):gsub('{1','[1'):gsub('true}','true]')
 
N = 100000
 
local start = os.clock()
for i=1,N do loadstring('return '..lua)() end
local duration = os.clock() - start
print("Lua native:",duration,"seconds")               --> 3.009 seconds
 
-- Using https://github.com/harningt/luajson v1.3.2
package.path = package.path .. ';./luajson/lua/?.lua'
local JSON = require 'json'
local start = os.clock()
for i=1,N do JSON.decode(json) end
local duration = os.clock() - start
print("LuaJSON:",duration,"seconds")                  --> 16.925 seconds