Add support for the node net module.

frog/lib/node/url.dart

+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#library('url');
+#import('node.dart');
+
+// module url
+
+class UrlObject {
+  UrlObject._fromObj(var obj) {
+    this.href = _NativeGetStringProperty(obj, 'href');
+    this.protocol = _NativeGetStringProperty(obj, 'protocol');
+    this.host = _NativeGetStringProperty(obj, 'host');
+    this.auth = _NativeGetStringProperty(obj, 'auth');
+    this.port = _NativeGetStringProperty(obj, 'port');
+    this.pathname = _NativeGetStringProperty(obj, 'pathname');
+    this.search = _NativeGetStringProperty(obj, 'search');
+    this.path = _NativeGetStringProperty(obj, 'path');
+    this.query = _NativeGetStringProperty(obj, 'query');
+    this.hash = _NativeGetStringProperty(obj, 'hash');
+    this.slashes = _NativeGetBoolProperty(obj, 'slashes');
+  }
+  
+  String href;
+  String protocol;
+  String host;
+  String auth;
+  String hostname;
+  String port;
+  String pathname;
+  String search;
+  String path;
+  String query;
+  String hash;
+  bool slashes;
+}
+
+class Url {
+  var _url;
+  Url._from(this._url);
+  
+  UrlObject parse(String urlStr, [bool parseQueryString, bool slashesDenoteHost]
+      )
+    => new UrlObject._fromObj(_parse(urlStr, parseQueryString, slashesDenoteHost
+        ));
+  
+  var _parse(String urlStr, bool parseQueryString, bool slashesDenoteHost)
+    native
+        "return this._url.parse(urlStr, parseQueryString, slashesDenoteHost);";
+
+  String format(UrlObject urlObj)
+    native "return this._url.format(urlObj);";
+  
+  String resolve(String from, String to)
+    native "return this._url.resolve(from, to);";
+
+  UrlObject resolveObject(UrlObject from, UrlObject to)
+    => new UrlObject._fromObj(_resolveObject(from, to));
+  
+  var _resolveObject(UrlObject from, UrlObject to)
+    native "return this._url.resolveOjbect(from, to);";
+}
+
+Url get url() => new Url._from(require('url'));