ethereum-web-token/dist/encoder/encoder.js

EWT bundles Ethereum function-calls into [JWT](https://jwt.io/)-like tokens. It simplifies the use of ECDSA signatures for webapps and the development of [Smart Oracles](https://github.com/codius/codius/wiki/Smart-Oracles:-A-Simple,-Powerful-Approach-to-S

'use strict';Object.defineProperty(exports, "__esModule", { value: true });var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);var _createClass2 = require('babel-runtime/helpers/createClass');var _createClass3 = _interopRequireDefault(_createClass2);var _pad = require('../util/pad');
var _mediate = require('./mediate');var _mediate2 = _interopRequireDefault(_mediate);
var _token = require('../token/token');var _token2 = _interopRequireDefault(_token);
var _types = require('../util/types');function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}var

Encoder = function () {function Encoder() {(0, _classCallCheck3.default)(this, Encoder);}(0, _createClass3.default)(Encoder, null, [{ key: 'encode', value: function encode(
    tokens) {
      if (!(0, _types.isArray)(tokens)) {
        throw new Error('tokens should be array of Token');
      }

      var mediates = tokens.map(function (token) {return Encoder.encodeToken(token);});
      var inits = mediates.
      map(function (mediate, idx) {return mediate.init(_mediate2.default.offsetFor(mediates, idx));}).
      join('');
      var closings = mediates.
      map(function (mediate, idx) {return mediate.closing(_mediate2.default.offsetFor(mediates, idx));}).
      join('');

      return '' + inits + closings;
    } }, { key: 'encodeToken', value: function encodeToken(

    token) {
      if (!(0, _types.isInstanceOf)(token, _token2.default)) {
        throw new Error('token should be instanceof Token');
      }

      switch (token.type) {
        case 'address':
          return new _mediate2.default('raw', (0, _pad.padAddress)(token.value));

        case 'int':
        case 'uint':
          return new _mediate2.default('raw', (0, _pad.padU32)(token.value));

        case 'bool':
          return new _mediate2.default('raw', (0, _pad.padBool)(token.value));

        case 'fixedBytes':
          return new _mediate2.default('raw', (0, _pad.padFixedBytes)(token.value));

        case 'bytes':
          return new _mediate2.default('prefixed', (0, _pad.padBytes)(token.value));

        case 'string':
          return new _mediate2.default('prefixed', (0, _pad.padString)(token.value));

        case 'fixedArray':
        case 'array':
          return new _mediate2.default(token.type, token.value.map(function (token) {return Encoder.encodeToken(token);}));

        default:
          throw new Error('Invalid token type ' + token.type + ' in encodeToken');}

    } }]);return Encoder;}();exports.default = Encoder;module.exports = exports['default'];