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86a50e2e9a
New json.decode(jsonText) and json.encode(luaTable) functions. In this way we don't depend on third-party libraries to decode/encode JSON text which is a quite common task (in tests and export scripts).
74 lines
1.8 KiB
Lua
74 lines
1.8 KiB
Lua
-- Copyright (C) 2023 Igara Studio S.A.
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--
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-- This file is released under the terms of the MIT license.
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-- Read LICENSE.txt for more information.
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-- Basic decode + iterators
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do
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local o = json.decode('{"a":true,"b":5,"c":[1,3,9]}')
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assert(#o == 3)
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assert(o.a == true)
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assert(o.b == 5)
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assert(#o.c == 3)
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assert(o.c[1] == 1)
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assert(o.c[2] == 3)
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assert(o.c[3] == 9)
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-- Iterate json data
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for k,v in pairs(o) do
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if k == "a" then assert(v == true) end
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if k == "b" then assert(v == 5) end
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if k == "c" then
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assert(v[1] == 1)
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assert(v[2] == 3)
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assert(v[3] == 9)
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end
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end
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for i,v in ipairs(o.c) do
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if i == 1 then assert(v == 1) end
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if i == 2 then assert(v == 3) end
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if i == 3 then assert(v == 9) end
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end
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end
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-- Modify values
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do
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local o = json.decode('{"obj":{"a":3,"b":5},"arr":[0,"hi",{"bye":true}]}')
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assert(o.obj.a == 3)
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assert(o.obj.b == 5)
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assert(o.arr[1] == 0)
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assert(o.arr[2] == "hi")
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assert(o.arr[3].bye == true)
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local u = json.decode(json.encode(o)) -- Creates a copy
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assert(o == o)
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assert(o == u)
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o.obj.b = 6
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o.arr[1] = "name"
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assert(tostring(o.obj) == '{"a": 3, "b": 6}')
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assert(tostring(o.arr) == '["name", "hi", {"bye": true}]')
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-- Check that "u" is a copy and wasn't modify (only "o" was modified)
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assert(tostring(u.obj) == '{"a": 3, "b": 5}')
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assert(tostring(u.arr) == '[0, "hi", {"bye": true}]')
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end
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-- Encode Lua tables
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do
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local arrStr = json.encode({ 4, "hi", true })
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assert(arrStr == '[4, "hi", true]')
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local arr = json.decode(arrStr)
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assert(arr[1] == 4)
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assert(arr[2] == "hi")
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assert(arr[3] == true)
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local obj = json.decode(json.encode({ a=4, b=true, c="name", d={1,8,{a=2}} }))
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assert(obj.a == 4)
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assert(obj.b == true)
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assert(obj.c == "name")
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assert(obj.d[1] == 1)
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assert(obj.d[2] == 8)
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assert(obj.d[3].a == 2)
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end
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