json-lisp v0.1.0

JSON Lisp

Execute lisp-like s-expressions written in JSON.

The aim of JSON-Lisp is to allow for an executable code format that is simple and portable, as well as easy to parse and execute in a controlled, sandboxed environment. This allows it to be stored in a database, sent over an HTTP connection, collected from user input, and executed on either a client or a server's machine.

Installation

Install with npm

$ npm install --save json-lisp

or yarn

$ yarn add json-lisp

Usage

const constants = {
  "a": 5,
  "b": 7,
  "+": (a, b) => a + b,
  "-": (a, b) => a - b
};

const jsonLispEnv = new JSONLispEnv(constants);

jsonLispEnv.evaluate(["+", "a", "b"])           //=> 12
jsonLispEnv.evaluate(["-", "a", 3])             //=> 2
jsonLispEnv.evaluate(["+", 2, "b"])             //=> 9
jsonLispEnv.evaluate(["+", "a", ["-", "b", 2]]) //=> 10

jsonLispEnv.evaluateJSON('["+", "a", ["-", "b", 2]]') //=> 10

See Also

1. JSON::Lisp gem for Ruby

Development

After checking out the repo, run npm install (or yarn) to install dependencies. Then, run npm test (or yarn test) to run the tests.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/jellymann/json-lisp-js.

License

The gem is available as open source under the terms of the MIT License.