swarm-ron-grammar/index.js

A regular grammar for the Swarm Replicated Object Notation

"use strict";
const resolve = require('regular-grammar');

const RON_GRAMMAR = {

    BASE64:     /[0-9A-Za-z_~]/,
    UNICODE:    /\\u[0-9a-fA-F]{4}/,
    INT:        /([\([{}\])])?($BASE64{0,10})/,
    UUID:       /($INT)?([-+$%])?($INT)?/,

    INT_ATOM:   /[+-]?\d{1,17}/,
    UUID_ATOM:  /[`]?$UUID/,
    STRING_ATOM:/($UNICODE|\\[^\n\r]|[^'\\\n\r])*/,
    FLOAT_ATOM: /[+-]?\d{0,19}\.\d{1,19}([Ee][+-]?\d{1,3})?/,
    OPTERM:     /[!?,;]/,
    FRAMETERM:  /\s*[.]/,

    ATOM:       /=($INT_ATOM)|'($STRING_ATOM)'|\^($FLOAT_ATOM)|>($UUID)/,
    OP:         /(?:\s*\*\s*($UUID_ATOM))?(?:\s*#\s*($UUID_ATOM))?(?:\s*@\s*($UUID_ATOM))?(?:\s*:\s*($UUID_ATOM))?\s*((?:\s*$ATOM)*)\s*($OPTERM)?/,
    FRAME:      /($OP)+$FRAMETERM?/,

};

resolve("FRAME", RON_GRAMMAR);

module.exports = RON_GRAMMAR;