link-rdflib/lib/named-node.js

an RDF library for node.js, patched for speed.

'use strict';

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

var ClassOrder = require('./class-order');

var Term = require('./term');
/**
 * @class NamedNode
 * @extends Term
 */


var NamedNode =
/*#__PURE__*/
function (_Term) {
  _inherits(NamedNode, _Term);

  /**
   * @constructor
   * @param iri {String}
   * @param ln {String|undefined} The term, if applicable
   */
  function NamedNode(iri) {
    var _this;

    var ln = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : undefined;

    _classCallCheck(this, NamedNode);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(NamedNode).call(this));
    _this.termType = NamedNode.termType;
    _this.term = undefined;

    if (iri && iri.termType === NamedNode.termType) {
      // param is a named node
      iri = iri.value;
    }

    if (!iri) {
      throw new Error('Missing IRI for NamedNode');
    }

    if (!iri.includes(':')) {
      throw new Error('NamedNode IRI "' + iri + '" must be absolute.');
    }

    if (iri.includes(' ')) {
      var message = 'Error: NamedNode IRI "' + iri + '" must not contain unencoded spaces.';
      throw new Error(message);
    }

    var existing = NamedNode.nsMap[iri];

    if (existing) {
      return _possibleConstructorReturn(_this, existing);
    }

    _this.value = iri;
    NamedNode.mem(_assertThisInitialized(_assertThisInitialized(_this)), ln);
    return _this;
  }
  /**
   * Returns an $rdf node for the containing directory, ending in slash.
   */


  _createClass(NamedNode, [{
    key: "dir",
    value: function dir() {
      var str = this.uri.split('#')[0];
      var p = str.slice(0, -1).lastIndexOf('/');
      var q = str.indexOf('//');
      if (q >= 0 && p < q + 2 || p < 0) return null;
      return NamedNode.find(str.slice(0, p + 1));
    }
    /**
     * Returns an NN for the whole web site, ending in slash.
     * Contrast with the "origin" which does NOT have a trailing slash
     */

  }, {
    key: "site",
    value: function site() {
      var str = this.uri.split('#')[0];
      var p = str.indexOf('//');
      if (p < 0) throw new Error('This URI does not have a web site part (origin)');
      var q = str.indexOf('/', p + 2);
      if (q < 0) throw new Error('This URI does not have a web site part. (origin)');
      return NamedNode.find(str.slice(0, q + 1));
    }
  }, {
    key: "doc",
    value: function doc() {
      if (this.uri.indexOf('#') < 0) {
        return this;
      } else {
        return NamedNode.find(this.uri.split('#')[0]);
      }
    }
  }, {
    key: "generateString",
    value: function generateString() {
      return '<' + this.uri + '>';
    }
    /**
     * Legacy getter and setter alias, node.uri
     */

  }, {
    key: "uri",
    get: function get() {
      return this.value;
    },
    set: function set(uri) {
      this.value = uri;
    }
    /**
     * Retrieve or create a NamedNode by its IRI
     * @param iri {string} The IRI of the blank node
     * @param ln {string} Property accessor-friendly string representation.
     * @return {NamedNode} The resolved or created NamedNode
     */

  }], [{
    key: "find",
    value: function find(iri) {
      var ln = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : undefined;

      if (iri && iri.termType) {
        iri = iri.value;
      }

      var fromMap = Term.nsMap[iri];

      if (fromMap !== undefined) {
        return fromMap;
      }

      return new NamedNode(iri, ln);
    }
    /**
     * Retrieve a NamedNode by its store index
     * @param sI {integer} The store index of the NamedNode
     * @return {NamedNode | undefined}
     */

  }, {
    key: "findByStoreIndex",
    value: function findByStoreIndex(sI) {
      var term = Term.termMap[sI];

      if (!term) {
        return undefined;
      }

      if (term.termType === "NamedNode") {
        return term;
      }

      return undefined;
    }
    /**
     * Assigns an index number and adds a NamedNode instance to the indices
     * @private
     * @param nn {NamedNode} The NamedNode instance to register
     * @param ln? {string} Property accessor-friendly string representation.
     * @return {NamedNode} The updated NamedNode instance
     */

  }, {
    key: "mem",
    value: function mem(nn, ln) {
      if (nn.sI) {
        throw new Error("NamedNode ".concat(nn, " already registered"));
      }

      nn.sI = ++Term.termIndex;
      nn.term = ln;
      Term.termMap[nn.sI] = Term.nsMap[nn.value] = nn;
      return nn;
    }
  }, {
    key: "fromValue",
    value: function fromValue(value) {
      return NamedNode.find(value);
    }
  }]);

  return NamedNode;
}(Term);

NamedNode.termType = 'NamedNode';
NamedNode.prototype.classOrder = ClassOrder['NamedNode'];
NamedNode.prototype.isVar = 0;
module.exports = NamedNode;