rpcchannel/lib/addrmap.js

Easy RPC with permission controls

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.WildcardEntryKey = exports.DefaultEntryKey = exports.AddressMap = void 0;

var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));

var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));

var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));

var _utils = require("./utils");

/**
 * A mapping of multi-part addresses (using the Java naming convention) to any
 * type. Used extensively by the RPC channel.
 * @author Nathan Pennie <kb1rd@kb1rd.net>
 */

/** */
var DefaultEntryKey = Symbol('DefaultEntry');
exports.DefaultEntryKey = DefaultEntryKey;
var WildcardEntryKey = Symbol('WildcardEntry');
exports.WildcardEntryKey = WildcardEntryKey;

function getFromAddrMapFlat(map, addr, wc_values) {
  var part = addr.shift();

  if (!part) {
    return map[DefaultEntryKey];
  }

  var data = undefined;

  if (map[part]) {
    data = getFromAddrMapFlat(map[part], addr, wc_values);
  }

  if (!data && map[WildcardEntryKey]) {
    if (wc_values) {
      wc_values.push(part);
    }

    data = getFromAddrMapFlat(map[WildcardEntryKey], addr, wc_values);
  }

  addr.unshift(part);
  return data;
}

var AddressMap = /*#__PURE__*/function () {
  function AddressMap() {
    (0, _classCallCheck2["default"])(this, AddressMap);
    (0, _defineProperty2["default"])(this, "table", {});
  }

  (0, _createClass2["default"])(AddressMap, [{
    key: "put",
    value: function put(addr, value) {
      var last_table = this.table;
      addr.forEach(function (part) {
        var key = part || WildcardEntryKey;

        if ((0, _utils.isUndef)(last_table[key])) {
          last_table[key] = {};
        }

        last_table = last_table[key];
      }); // TODO: Delete parents if empty

      if ((0, _utils.isUndef)(value)) {
        delete last_table[DefaultEntryKey];
      } else {
        last_table[DefaultEntryKey] = value;
      }
    }
  }, {
    key: "get",
    value: function get(addr, wc_values) {
      var value = getFromAddrMapFlat(this.table, addr, wc_values);
      return (0, _utils.isUndef)(value) ? this.table[DefaultEntryKey] : value;
    }
  }, {
    key: "clear",
    value: function clear() {
      for (var _i = 0, _Object$keys = Object.keys(this.table); _i < _Object$keys.length; _i++) {
        var k = _Object$keys[_i];
        delete this.table[k];
      }
    }
  }, {
    key: "toString",
    value: function toString() {
      var entries = [];
      var addr_str = [];

      function traverse(map) {
        if (map[DefaultEntryKey]) {
          entries.push("".concat(addr_str.join('.'), ": ").concat(map[DefaultEntryKey]));
        }

        if (map[WildcardEntryKey]) {
          addr_str.push('*');
          traverse(map[WildcardEntryKey]);
          addr_str.pop();
        }

        Object.keys(map).forEach(function (key) {
          addr_str.push("[".concat(key, "]"));
          traverse(map[key]);
          addr_str.pop();
        });
      }

      traverse(this.table);
      return "AddrMap [\n".concat(entries.map(function (s) {
        return '  ' + s;
      }).join('\n'), "\n]");
    }
  }]);
  return AddressMap;
}();

exports.AddressMap = AddressMap;
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