rsjson-lua 0.1.4

a json module based on serde-json (rust)
Documentation 
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local luamark = require("luamark")

local rsjson = require("rsjson").serde
local dkjson = require("dkjson").use_lpeg()
local cjson = require("cjson").new()

local encoding_test = {
    one = 1,
    two = "2",
    three = {4,5,6},
    ["four"] = {
        [1] = "one",
        [2] = "two",
        [3] = "three",
    },
    nested = {
        one = 1,
        two = "2",
        three = {4,5,6},
        ["four"] = {
            [1] = "one",
            [2] = "two",
            [3] = "three",
        },
    },
}

local decoding_test = [[{"two":"2","one":1,"nested":{"four":["one","two","three"],"three":[4,5,6],"two":"2","one":1},"four":["one","two","three"],"three":[4,5,6]}]]

local iters = arg[1] or 100

local encoding = luamark.compare_memory({
   rsjson = function()
      for _ = 1, iters do rsjson.encode(encoding_test) end
   end,
   dkjson = function()
      for _ = 1, iters do dkjson.encode(encoding_test) end
   end,
   cjson = function()
      for _ = 1, iters do cjson.encode(encoding_test) end
   end,
})

local decoding = luamark.compare_memory({
   rsjson = function()
      for _ = 1, iters do rsjson.decode(decoding_test) end
   end,
   dkjson = function()
      for _ = 1, iters do dkjson.decode(decoding_test) end
   end,
   cjson = function()
      for _ = 1, iters do cjson.decode(decoding_test) end
   end,
})

local sep = 20
print(("-"):rep(sep))
print("Encoding (Mem): " .. iters .. " iters")
print(("-"):rep(sep))
print(luamark.render(encoding))
print()
print(("-"):rep(sep))
print("Decoding (Mem): " .. iters .. " iters")
print(("-"):rep(sep))
print(luamark.render(decoding))