hadryan/jsnprsr

JsnPrsr: A Lean JSON Parser

JsnPrsr: A Lean JSON Parser

About

JsnPrsr is a fast, small, and lightweight JSON parser (and serializer), written in Java, with no external dependencies.

Usage

The entry point of the JsnPrsr library is the JSON class, which can be used to both parse and serialize JSON Values:

Value value = JSON.parse("{\"foo\": \"bar\", \"baz\": [4, 5]}");

System.out.println(value.getType());
System.out.println(value.getObject().get("foo").getString());
System.out.println(value.getObject().get("baz").getArray().get(0).getNumber());

value.getObject().put("foo", Value.array(Value.string("a"), Value.string("b")));

System.out.println(JSON.serialize(value));

Modification tips

• If you want to track line numbers, edit Parser.java and comment out the lines referencing lineNumber.

• If you want to support trailing commas in arrays, see the comment in Parser.readArray() and Parser.readObject(). This makes it support a more human writable form of JSON, accepting for example:

    {
      "foo": 1,
      "bar": 2,
    }
  

  and

    [
      "foo",
      "bar",
    ]