link-rdflib/lib/namespace.js

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

"use strict";

var NamedNode = require('./named-node');
/**
 * Defines a Namespace to ease IRI generation
 * @param nsuri The base IRI of the namespace, prepended before all terms
 * @param terms Optional list of predefined terms which are accessible as members
 * @return {Function} Function to mint IRI's on the namespace with predefined members.
 */


function Namespace(nsuri) {
  var terms = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
  NamedNode.find(nsuri);
  var mem = {};

  var ns = function ns(ln) {
    if (mem[ln]) {
      return mem[ln];
    }

    var fullIRI = nsuri + (ln || '');
    return mem[ln] = NamedNode.find(fullIRI, ln);
  };

  if (terms && typeof terms.length !== "undefined") {
    for (var i = 0; i < terms.length; i++) {
      Object.defineProperty(ns, terms[i], {
        enumerable: true,
        value: ns(terms[i]),
        writable: false
      });
    }
  }

  return ns;
}

module.exports = Namespace;