mirror of https://github.com/rxi/json.lua.git
47 lines
1.5 KiB
Markdown
47 lines
1.5 KiB
Markdown
# 
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A lightweight JSON library for Lua
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## Features
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* Implemented in pure Lua: works with 5.1, 5.2, 5.3 and JIT
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* Fast: generally outperforms other pure Lua JSON implementations
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([benchmark scripts](bench/))
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* Tiny: around 290sloc, 9kb
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* Proper error messages, *eg:* `expected '}' or ',' at line 203 col 30`
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## Usage
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The [json.lua](json.lua?raw=1) file should be dropped into an existing project
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and required by it:
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```lua
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json = require "json"
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```
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The library provides the following functions:
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#### json.encode(value)
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Returns a string representing `value` encoded in JSON.
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```lua
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json:encode({ 1, 2, 3, { x = 10 } }) -- Returns '[1,2,3,{"x":10}]'
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```
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#### json.decode(str)
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Returns a value representing the decoded JSON string.
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```lua
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json:decode('[1,2,3,{"x":10}]') -- Returns { 1, 2, 3, { x = 10 } }
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```
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## Notes
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* Trying to encode values which are unrepresentable in JSON will never result
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in type conversion or other magic: sparse arrays, tables with mixed key types
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or invalid numbers (NaN, -inf, inf) will raise an error
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* `null` values contained within an array or object are converted to `nil` and
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are therefore lost upon decoding
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* *Pretty* encoding is not supported, `json.encode()` only encodes to a compact
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format
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## License
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This library is free software; you can redistribute it and/or modify it under
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the terms of the MIT license. See [LICENSE](LICENSE) for details.
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