jashkenas--coffeescript/vendor/jison/examples/basic_lex.json

{
    "lex": {
        "rules": [
           ["\\s+", "/* skip whitespace */"],
           ["[0-9]+", "return 'NAT';"],
           ["\\+", "return '+';"]
        ]
    },

    "bnf": {
        "E" :[ "E + T",
               "T" ],
        "T" :[ "NAT" ]
    }
}